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@@ -0,0 +1,5893 @@
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+
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+** This file contains all sources (including headers) to the LEMON
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+** LALR(1) parser generator. The sources have been combined into a
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+** single file to make it easy to include LEMON in the source tree
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+** and Makefile of another program.
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+**
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+** The author of this program disclaims copyright.
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+*/
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+#include <stdio.h>
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+#include <stdarg.h>
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+#include <string.h>
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+#include <ctype.h>
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+#include <stdlib.h>
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+#include <assert.h>
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+
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+#define ISSPACE(X) isspace((unsigned char)(X))
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+#define ISDIGIT(X) isdigit((unsigned char)(X))
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+#define ISALNUM(X) isalnum((unsigned char)(X))
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+#define ISALPHA(X) isalpha((unsigned char)(X))
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+#define ISUPPER(X) isupper((unsigned char)(X))
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+#define ISLOWER(X) islower((unsigned char)(X))
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+
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+
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+#ifndef __WIN32__
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+# if defined(_WIN32) || defined(WIN32)
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+# define __WIN32__
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+# endif
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+#endif
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+
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+#ifdef __WIN32__
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+#ifdef __cplusplus
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+extern "C" {
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+#endif
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+extern int access(const char *path, int mode);
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+#ifdef __cplusplus
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+}
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+#endif
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+#else
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+#include <unistd.h>
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+#endif
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+
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+
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+#define PRIVATE
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+
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+#ifdef TEST
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+#define MAXRHS 5
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+#else
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+#define MAXRHS 1000
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+#endif
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+
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+extern void memory_error();
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+static int showPrecedenceConflict = 0;
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+static char *msort(char*,char**,int(*)(const char*,const char*));
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+
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+
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+** Compilers are getting increasingly pedantic about type conversions
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+** as C evolves ever closer to Ada.... To work around the latest problems
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+** we have to define the following variant of strlen().
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+*/
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+#define lemonStrlen(X) ((int)strlen(X))
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+
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+
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+** Compilers are starting to complain about the use of sprintf() and strcpy(),
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+** saying they are unsafe. So we define our own versions of those routines too.
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+**
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+** There are three routines here: lemon_sprintf(), lemon_vsprintf(), and
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+** lemon_addtext(). The first two are replacements for sprintf() and vsprintf().
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+** The third is a helper routine for vsnprintf() that adds texts to the end of a
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+** buffer, making sure the buffer is always zero-terminated.
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+**
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+** The string formatter is a minimal subset of stdlib sprintf() supporting only
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+** a few simply conversions:
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+**
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+** %d
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+** %s
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+** %.*s
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+**
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+*/
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+static void lemon_addtext(
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+ char *zBuf,
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+ int *pnUsed,
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+ const char *zIn,
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+ int nIn,
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+ int iWidth
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+){
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+ if( nIn<0 ) for(nIn=0; zIn[nIn]; nIn++){}
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+ while( iWidth>nIn ){ zBuf[(*pnUsed)++] = ' '; iWidth--; }
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+ if( nIn==0 ) return;
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+ memcpy(&zBuf[*pnUsed], zIn, nIn);
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+ *pnUsed += nIn;
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+ while( (-iWidth)>nIn ){ zBuf[(*pnUsed)++] = ' '; iWidth++; }
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+ zBuf[*pnUsed] = 0;
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+}
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+static int lemon_vsprintf(char *str, const char *zFormat, va_list ap){
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+ int i, j, k, c;
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+ int nUsed = 0;
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+ const char *z;
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+ char zTemp[50];
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+ str[0] = 0;
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+ for(i=j=0; (c = zFormat[i])!=0; i++){
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+ if( c=='%' ){
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+ int iWidth = 0;
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+ lemon_addtext(str, &nUsed, &zFormat[j], i-j, 0);
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+ c = zFormat[++i];
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+ if( ISDIGIT(c) || (c=='-' && ISDIGIT(zFormat[i+1])) ){
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+ if( c=='-' ) i++;
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+ while( ISDIGIT(zFormat[i]) ) iWidth = iWidth*10 + zFormat[i++] - '0';
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+ if( c=='-' ) iWidth = -iWidth;
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+ c = zFormat[i];
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+ }
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+ if( c=='d' ){
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+ int v = va_arg(ap, int);
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+ if( v<0 ){
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+ lemon_addtext(str, &nUsed, "-", 1, iWidth);
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+ v = -v;
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+ }else if( v==0 ){
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+ lemon_addtext(str, &nUsed, "0", 1, iWidth);
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+ }
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+ k = 0;
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+ while( v>0 ){
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+ k++;
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+ zTemp[sizeof(zTemp)-k] = (v%10) + '0';
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+ v /= 10;
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+ }
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+ lemon_addtext(str, &nUsed, &zTemp[sizeof(zTemp)-k], k, iWidth);
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+ }else if( c=='s' ){
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+ z = va_arg(ap, const char*);
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+ lemon_addtext(str, &nUsed, z, -1, iWidth);
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+ }else if( c=='.' && memcmp(&zFormat[i], ".*s", 3)==0 ){
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+ i += 2;
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+ k = va_arg(ap, int);
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+ z = va_arg(ap, const char*);
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+ lemon_addtext(str, &nUsed, z, k, iWidth);
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+ }else if( c=='%' ){
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+ lemon_addtext(str, &nUsed, "%", 1, 0);
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+ }else{
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+ fprintf(stderr, "illegal format\n");
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+ exit(1);
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+ }
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+ j = i+1;
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+ }
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+ }
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+ lemon_addtext(str, &nUsed, &zFormat[j], i-j, 0);
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+ return nUsed;
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+}
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+static int lemon_sprintf(char *str, const char *format, ...){
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+ va_list ap;
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+ int rc;
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+ va_start(ap, format);
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+ rc = lemon_vsprintf(str, format, ap);
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+ va_end(ap);
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+ return rc;
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+}
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+static void lemon_strcpy(char *dest, const char *src){
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+ while( (*(dest++) = *(src++))!=0 ){}
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+}
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+static void lemon_strcat(char *dest, const char *src){
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+ while( *dest ) dest++;
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+ lemon_strcpy(dest, src);
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+}
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+
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+
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+
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+struct rule;
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+struct lemon;
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+struct action;
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+
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+static struct action *Action_new(void);
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+static struct action *Action_sort(struct action *);
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+
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+
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+void FindRulePrecedences(struct lemon*);
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+void FindFirstSets(struct lemon*);
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+void FindStates(struct lemon*);
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+void FindLinks(struct lemon*);
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+void FindFollowSets(struct lemon*);
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+void FindActions(struct lemon*);
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+
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+
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+void Configlist_init(void);
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+struct config *Configlist_add(struct rule *, int);
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+struct config *Configlist_addbasis(struct rule *, int);
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+void Configlist_closure(struct lemon *);
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+void Configlist_sort(void);
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+void Configlist_sortbasis(void);
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+struct config *Configlist_return(void);
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+struct config *Configlist_basis(void);
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+void Configlist_eat(struct config *);
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+void Configlist_reset(void);
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+
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+
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+void ErrorMsg(const char *, int,const char *, ...);
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+
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+
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+enum option_type { OPT_FLAG=1, OPT_INT, OPT_DBL, OPT_STR,
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+ OPT_FFLAG, OPT_FINT, OPT_FDBL, OPT_FSTR};
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+struct s_options {
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+ enum option_type type;
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+ const char *label;
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+ char *arg;
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+ const char *message;
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+};
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+int OptInit(char**,struct s_options*,FILE*);
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+int OptNArgs(void);
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+char *OptArg(int);
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+void OptErr(int);
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+void OptPrint(void);
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+
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+
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+void Parse(struct lemon *lemp);
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+
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+
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+struct plink *Plink_new(void);
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+void Plink_add(struct plink **, struct config *);
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+void Plink_copy(struct plink **, struct plink *);
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+void Plink_delete(struct plink *);
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+
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+
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+void Reprint(struct lemon *);
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+void ReportOutput(struct lemon *);
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+void ReportTable(struct lemon *, int, int);
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+void ReportHeader(struct lemon *);
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+void CompressTables(struct lemon *);
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+void ResortStates(struct lemon *);
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+
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+
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+void SetSize(int);
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+char *SetNew(void);
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+void SetFree(char*);
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+int SetAdd(char*,int);
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+int SetUnion(char *,char *);
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+#define SetFind(X,Y) (X[Y])
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+
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+
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+
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+** Principal data structures for the LEMON parser generator.
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+*/
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+
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+typedef enum {LEMON_FALSE=0, LEMON_TRUE} Boolean;
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+
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+
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+** in the following: */
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+enum symbol_type {
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+ TERMINAL,
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+ NONTERMINAL,
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+ MULTITERMINAL
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+};
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+enum e_assoc {
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+ LEFT,
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+ RIGHT,
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+ NONE,
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+ UNK
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+};
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+struct symbol {
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+ const char *name;
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+ int index;
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+ enum symbol_type type;
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+ struct rule *rule;
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+ struct symbol *fallback;
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+ int prec;
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+ enum e_assoc assoc;
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+ char *firstset;
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+ Boolean lambda;
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+ int useCnt;
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+ char *destructor;
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+ ** popped from the stack during error processing */
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+ int destLineno;
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+ ** -1 for duplicate destructors. */
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+ char *datatype;
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+ ** object. Only used if type==NONTERMINAL */
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+ int dtnum;
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+ ** stack is a union. The .yy%d element of this
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+ ** union is the correct data type for this object */
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+ int bContent;
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+ ** it is ever more than just syntax */
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+
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+ int nsubsym;
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+ struct symbol **subsym;
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+};
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+
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+
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+** structure. */
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+struct rule {
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+ struct symbol *lhs;
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+ const char *lhsalias;
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+ int lhsStart;
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+ int ruleline;
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+ int nrhs;
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+ struct symbol **rhs;
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+ const char **rhsalias;
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+ int line;
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+ const char *code;
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+ const char *codePrefix;
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+ const char *codeSuffix;
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+ struct symbol *precsym;
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+ int index;
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+ int iRule;
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+ Boolean noCode;
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+ Boolean codeEmitted;
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+ Boolean canReduce;
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+ Boolean doesReduce;
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+ Boolean neverReduce;
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+ ** by actions or other outside implementation */
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+ struct rule *nextlhs;
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+ struct rule *next;
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+};
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+
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+
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+** a mark (dot) showing how much of that rule has been processed so far.
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+** Configurations also contain a follow-set which is a list of terminal
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+** symbols which are allowed to immediately follow the end of the rule.
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+** Every configuration is recorded as an instance of the following: */
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+enum cfgstatus {
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+ COMPLETE,
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+ INCOMPLETE
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+};
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+struct config {
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+ struct rule *rp;
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+ int dot;
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+ char *fws;
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+ struct plink *fplp;
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+ struct plink *bplp;
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+ struct state *stp;
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+ enum cfgstatus status;
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+ struct config *next;
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+ struct config *bp;
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+};
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+
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+enum e_action {
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+ SHIFT,
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+ ACCEPT,
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+ REDUCE,
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+ ERROR,
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+ SSCONFLICT,
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+ SRCONFLICT,
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+ RRCONFLICT,
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+ SH_RESOLVED,
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+ RD_RESOLVED,
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+ NOT_USED,
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+ SHIFTREDUCE
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+};
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+
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+
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+struct action {
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+ struct symbol *sp;
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+ enum e_action type;
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+ union {
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+ struct state *stp;
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+ struct rule *rp;
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+ } x;
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+ struct symbol *spOpt;
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+ struct action *next;
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+ struct action *collide;
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+};
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+
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+
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+** is encoded as an instance of the following structure. */
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+struct state {
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+ struct config *bp;
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+ struct config *cfp;
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+ int statenum;
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+ struct action *ap;
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+ int nTknAct, nNtAct;
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+ int iTknOfst, iNtOfst;
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+ int iDfltReduce;
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+ struct rule *pDfltReduce;
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+ int autoReduce;
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+};
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+#define NO_OFFSET (-2147483647)
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+
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+
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+** configuration followset should be propagated to another whenever
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+** the first changes. */
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+struct plink {
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+ struct config *cfp;
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+ struct plink *next;
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+};
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+
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+
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+** follows. (LEMON uses no global variables and makes little use of
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+** static variables. Fields in the following structure can be thought
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+** of as begin global variables in the program.) */
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+struct lemon {
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+ struct state **sorted;
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+ struct rule *rule;
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+ struct rule *startRule;
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+ int nstate;
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+ int nxstate;
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+ int nrule;
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+ int nruleWithAction;
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+ int nsymbol;
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+ int nterminal;
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+ int minShiftReduce;
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+ int errAction;
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+ int accAction;
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+ int noAction;
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+ int minReduce;
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+ int maxAction;
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+ struct symbol **symbols;
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+ int errorcnt;
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+ struct symbol *errsym;
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+ struct symbol *wildcard;
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+ char *name;
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+ char *arg;
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+ char *ctx;
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+ char *tokentype;
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+ char *vartype;
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+ char *start;
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+ char *stacksize;
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+ char *include;
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+ char *error;
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+ char *overflow;
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+ char *failure;
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+ char *accept;
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+ char *extracode;
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+ char *tokendest;
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+ char *vardest;
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+ char *filename;
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+ char *outname;
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+ char *tokenprefix;
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+ int nconflict;
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+ int nactiontab;
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+ int nlookaheadtab;
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+ int tablesize;
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+ int basisflag;
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+ int printPreprocessed;
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+ int has_fallback;
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+ int nolinenosflag;
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+ char *argv0;
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+};
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+
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+#define MemoryCheck(X) if((X)==0){ \
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+ extern void memory_error(); \
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+ memory_error(); \
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+}
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+
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+
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+
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+** All code in this file has been automatically generated
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+** from a specification in the file
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+** "table.q"
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+** by the associative array code building program "aagen".
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|
|
+** Do not edit this file! Instead, edit the specification
|
|
|
+** file, then rerun aagen.
|
|
|
+*/
|
|
|
+
|
|
|
+** Code for processing tables in the LEMON parser generator.
|
|
|
+*/
|
|
|
+
|
|
|
+
|
|
|
+const char *Strsafe(const char *);
|
|
|
+
|
|
|
+void Strsafe_init(void);
|
|
|
+int Strsafe_insert(const char *);
|
|
|
+const char *Strsafe_find(const char *);
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+struct symbol *Symbol_new(const char *);
|
|
|
+int Symbolcmpp(const void *, const void *);
|
|
|
+void Symbol_init(void);
|
|
|
+int Symbol_insert(struct symbol *, const char *);
|
|
|
+struct symbol *Symbol_find(const char *);
|
|
|
+struct symbol *Symbol_Nth(int);
|
|
|
+int Symbol_count(void);
|
|
|
+struct symbol **Symbol_arrayof(void);
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+int Configcmp(const char *, const char *);
|
|
|
+struct state *State_new(void);
|
|
|
+void State_init(void);
|
|
|
+int State_insert(struct state *, struct config *);
|
|
|
+struct state *State_find(struct config *);
|
|
|
+struct state **State_arrayof(void);
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+void Configtable_init(void);
|
|
|
+int Configtable_insert(struct config *);
|
|
|
+struct config *Configtable_find(struct config *);
|
|
|
+void Configtable_clear(int(*)(struct config *));
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+** Routines processing parser actions in the LEMON parser generator.
|
|
|
+*/
|
|
|
+
|
|
|
+
|
|
|
+static struct action *Action_new(void){
|
|
|
+ static struct action *actionfreelist = 0;
|
|
|
+ struct action *newaction;
|
|
|
+
|
|
|
+ if( actionfreelist==0 ){
|
|
|
+ int i;
|
|
|
+ int amt = 100;
|
|
|
+ actionfreelist = (struct action *)calloc(amt, sizeof(struct action));
|
|
|
+ if( actionfreelist==0 ){
|
|
|
+ fprintf(stderr,"Unable to allocate memory for a new parser action.");
|
|
|
+ exit(1);
|
|
|
+ }
|
|
|
+ for(i=0; i<amt-1; i++) actionfreelist[i].next = &actionfreelist[i+1];
|
|
|
+ actionfreelist[amt-1].next = 0;
|
|
|
+ }
|
|
|
+ newaction = actionfreelist;
|
|
|
+ actionfreelist = actionfreelist->next;
|
|
|
+ return newaction;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+** positive if the first action is less than, equal to, or greater than
|
|
|
+** the first
|
|
|
+*/
|
|
|
+static int actioncmp(
|
|
|
+ struct action *ap1,
|
|
|
+ struct action *ap2
|
|
|
+){
|
|
|
+ int rc;
|
|
|
+ rc = ap1->sp->index - ap2->sp->index;
|
|
|
+ if( rc==0 ){
|
|
|
+ rc = (int)ap1->type - (int)ap2->type;
|
|
|
+ }
|
|
|
+ if( rc==0 && (ap1->type==REDUCE || ap1->type==SHIFTREDUCE) ){
|
|
|
+ rc = ap1->x.rp->index - ap2->x.rp->index;
|
|
|
+ }
|
|
|
+ if( rc==0 ){
|
|
|
+ rc = (int) (ap2 - ap1);
|
|
|
+ }
|
|
|
+ return rc;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+static struct action *Action_sort(
|
|
|
+ struct action *ap
|
|
|
+){
|
|
|
+ ap = (struct action *)msort((char *)ap,(char **)&ap->next,
|
|
|
+ (int(*)(const char*,const char*))actioncmp);
|
|
|
+ return ap;
|
|
|
+}
|
|
|
+
|
|
|
+void Action_add(
|
|
|
+ struct action **app,
|
|
|
+ enum e_action type,
|
|
|
+ struct symbol *sp,
|
|
|
+ char *arg
|
|
|
+){
|
|
|
+ struct action *newaction;
|
|
|
+ newaction = Action_new();
|
|
|
+ newaction->next = *app;
|
|
|
+ *app = newaction;
|
|
|
+ newaction->type = type;
|
|
|
+ newaction->sp = sp;
|
|
|
+ newaction->spOpt = 0;
|
|
|
+ if( type==SHIFT ){
|
|
|
+ newaction->x.stp = (struct state *)arg;
|
|
|
+ }else{
|
|
|
+ newaction->x.rp = (struct rule *)arg;
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+** This module implements routines use to construct the yy_action[] table.
|
|
|
+*/
|
|
|
+
|
|
|
+
|
|
|
+** The state of the yy_action table under construction is an instance of
|
|
|
+** the following structure.
|
|
|
+**
|
|
|
+** The yy_action table maps the pair (state_number, lookahead) into an
|
|
|
+** action_number. The table is an array of integers pairs. The state_number
|
|
|
+** determines an initial offset into the yy_action array. The lookahead
|
|
|
+** value is then added to this initial offset to get an index X into the
|
|
|
+** yy_action array. If the aAction[X].lookahead equals the value of the
|
|
|
+** of the lookahead input, then the value of the action_number output is
|
|
|
+** aAction[X].action. If the lookaheads do not match then the
|
|
|
+** default action for the state_number is returned.
|
|
|
+**
|
|
|
+** All actions associated with a single state_number are first entered
|
|
|
+** into aLookahead[] using multiple calls to acttab_action(). Then the
|
|
|
+** actions for that single state_number are placed into the aAction[]
|
|
|
+** array with a single call to acttab_insert(). The acttab_insert() call
|
|
|
+** also resets the aLookahead[] array in preparation for the next
|
|
|
+** state number.
|
|
|
+*/
|
|
|
+struct lookahead_action {
|
|
|
+ int lookahead;
|
|
|
+ int action;
|
|
|
+};
|
|
|
+typedef struct acttab acttab;
|
|
|
+struct acttab {
|
|
|
+ int nAction;
|
|
|
+ int nActionAlloc;
|
|
|
+ struct lookahead_action
|
|
|
+ *aAction,
|
|
|
+ *aLookahead;
|
|
|
+ int mnLookahead;
|
|
|
+ int mnAction;
|
|
|
+ int mxLookahead;
|
|
|
+ int nLookahead;
|
|
|
+ int nLookaheadAlloc;
|
|
|
+ int nterminal;
|
|
|
+ int nsymbol;
|
|
|
+};
|
|
|
+
|
|
|
+
|
|
|
+#define acttab_lookahead_size(X) ((X)->nAction)
|
|
|
+
|
|
|
+
|
|
|
+#define acttab_yyaction(X,N) ((X)->aAction[N].action)
|
|
|
+
|
|
|
+
|
|
|
+#define acttab_yylookahead(X,N) ((X)->aAction[N].lookahead)
|
|
|
+
|
|
|
+
|
|
|
+void acttab_free(acttab *p){
|
|
|
+ free( p->aAction );
|
|
|
+ free( p->aLookahead );
|
|
|
+ free( p );
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+acttab *acttab_alloc(int nsymbol, int nterminal){
|
|
|
+ acttab *p = (acttab *) calloc( 1, sizeof(*p) );
|
|
|
+ if( p==0 ){
|
|
|
+ fprintf(stderr,"Unable to allocate memory for a new acttab.");
|
|
|
+ exit(1);
|
|
|
+ }
|
|
|
+ memset(p, 0, sizeof(*p));
|
|
|
+ p->nsymbol = nsymbol;
|
|
|
+ p->nterminal = nterminal;
|
|
|
+ return p;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+**
|
|
|
+** This routine is called once for each lookahead for a particular
|
|
|
+** state.
|
|
|
+*/
|
|
|
+void acttab_action(acttab *p, int lookahead, int action){
|
|
|
+ if( p->nLookahead>=p->nLookaheadAlloc ){
|
|
|
+ p->nLookaheadAlloc += 25;
|
|
|
+ p->aLookahead = (struct lookahead_action *) realloc( p->aLookahead,
|
|
|
+ sizeof(p->aLookahead[0])*p->nLookaheadAlloc );
|
|
|
+ if( p->aLookahead==0 ){
|
|
|
+ fprintf(stderr,"malloc failed\n");
|
|
|
+ exit(1);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ if( p->nLookahead==0 ){
|
|
|
+ p->mxLookahead = lookahead;
|
|
|
+ p->mnLookahead = lookahead;
|
|
|
+ p->mnAction = action;
|
|
|
+ }else{
|
|
|
+ if( p->mxLookahead<lookahead ) p->mxLookahead = lookahead;
|
|
|
+ if( p->mnLookahead>lookahead ){
|
|
|
+ p->mnLookahead = lookahead;
|
|
|
+ p->mnAction = action;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ p->aLookahead[p->nLookahead].lookahead = lookahead;
|
|
|
+ p->aLookahead[p->nLookahead].action = action;
|
|
|
+ p->nLookahead++;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+** Add the transaction set built up with prior calls to acttab_action()
|
|
|
+** into the current action table. Then reset the transaction set back
|
|
|
+** to an empty set in preparation for a new round of acttab_action() calls.
|
|
|
+**
|
|
|
+** Return the offset into the action table of the new transaction.
|
|
|
+**
|
|
|
+** If the makeItSafe parameter is true, then the offset is chosen so that
|
|
|
+** it is impossible to overread the yy_lookaside[] table regardless of
|
|
|
+** the lookaside token. This is done for the terminal symbols, as they
|
|
|
+** come from external inputs and can contain syntax errors. When makeItSafe
|
|
|
+** is false, there is more flexibility in selecting offsets, resulting in
|
|
|
+** a smaller table. For non-terminal symbols, which are never syntax errors,
|
|
|
+** makeItSafe can be false.
|
|
|
+*/
|
|
|
+int acttab_insert(acttab *p, int makeItSafe){
|
|
|
+ int i, j, k, n, end;
|
|
|
+ assert( p->nLookahead>0 );
|
|
|
+
|
|
|
+
|
|
|
+ ** in the worst case. The worst case occurs if the transaction set
|
|
|
+ ** must be appended to the current action table
|
|
|
+ */
|
|
|
+ n = p->nsymbol + 1;
|
|
|
+ if( p->nAction + n >= p->nActionAlloc ){
|
|
|
+ int oldAlloc = p->nActionAlloc;
|
|
|
+ p->nActionAlloc = p->nAction + n + p->nActionAlloc + 20;
|
|
|
+ p->aAction = (struct lookahead_action *) realloc( p->aAction,
|
|
|
+ sizeof(p->aAction[0])*p->nActionAlloc);
|
|
|
+ if( p->aAction==0 ){
|
|
|
+ fprintf(stderr,"malloc failed\n");
|
|
|
+ exit(1);
|
|
|
+ }
|
|
|
+ for(i=oldAlloc; i<p->nActionAlloc; i++){
|
|
|
+ p->aAction[i].lookahead = -1;
|
|
|
+ p->aAction[i].action = -1;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+
|
|
|
+ ** duplicate of the current transaction set. Fall out of the loop
|
|
|
+ ** if and when the duplicate is found.
|
|
|
+ **
|
|
|
+ ** i is the index in p->aAction[] where p->mnLookahead is inserted.
|
|
|
+ */
|
|
|
+ end = makeItSafe ? p->mnLookahead : 0;
|
|
|
+ for(i=p->nAction-1; i>=end; i--){
|
|
|
+ if( p->aAction[i].lookahead==p->mnLookahead ){
|
|
|
+
|
|
|
+ ** must match against the candidate aAction[i] entry. */
|
|
|
+ if( p->aAction[i].action!=p->mnAction ) continue;
|
|
|
+ for(j=0; j<p->nLookahead; j++){
|
|
|
+ k = p->aLookahead[j].lookahead - p->mnLookahead + i;
|
|
|
+ if( k<0 || k>=p->nAction ) break;
|
|
|
+ if( p->aLookahead[j].lookahead!=p->aAction[k].lookahead ) break;
|
|
|
+ if( p->aLookahead[j].action!=p->aAction[k].action ) break;
|
|
|
+ }
|
|
|
+ if( j<p->nLookahead ) continue;
|
|
|
+
|
|
|
+
|
|
|
+ ** transaction is allowed to match aAction[i] */
|
|
|
+ n = 0;
|
|
|
+ for(j=0; j<p->nAction; j++){
|
|
|
+ if( p->aAction[j].lookahead<0 ) continue;
|
|
|
+ if( p->aAction[j].lookahead==j+p->mnLookahead-i ) n++;
|
|
|
+ }
|
|
|
+ if( n==p->nLookahead ){
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+
|
|
|
+ ** an empty offset in the aAction[] table in which we can add the
|
|
|
+ ** aLookahead[] transaction.
|
|
|
+ */
|
|
|
+ if( i<end ){
|
|
|
+
|
|
|
+ ** aLookahead[] transaction. Leave i set to the offset of the hole.
|
|
|
+ ** If no holes are found, i is left at p->nAction, which means the
|
|
|
+ ** transaction will be appended. */
|
|
|
+ i = makeItSafe ? p->mnLookahead : 0;
|
|
|
+ for(; i<p->nActionAlloc - p->mxLookahead; i++){
|
|
|
+ if( p->aAction[i].lookahead<0 ){
|
|
|
+ for(j=0; j<p->nLookahead; j++){
|
|
|
+ k = p->aLookahead[j].lookahead - p->mnLookahead + i;
|
|
|
+ if( k<0 ) break;
|
|
|
+ if( p->aAction[k].lookahead>=0 ) break;
|
|
|
+ }
|
|
|
+ if( j<p->nLookahead ) continue;
|
|
|
+ for(j=0; j<p->nAction; j++){
|
|
|
+ if( p->aAction[j].lookahead==j+p->mnLookahead-i ) break;
|
|
|
+ }
|
|
|
+ if( j==p->nAction ){
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+#if 0
|
|
|
+ printf("Acttab:");
|
|
|
+ for(j=0; j<p->nLookahead; j++){
|
|
|
+ printf(" %d", p->aLookahead[j].lookahead);
|
|
|
+ }
|
|
|
+ printf(" inserted at %d\n", i);
|
|
|
+#endif
|
|
|
+ for(j=0; j<p->nLookahead; j++){
|
|
|
+ k = p->aLookahead[j].lookahead - p->mnLookahead + i;
|
|
|
+ p->aAction[k] = p->aLookahead[j];
|
|
|
+ if( k>=p->nAction ) p->nAction = k+1;
|
|
|
+ }
|
|
|
+ if( makeItSafe && i+p->nterminal>=p->nAction ) p->nAction = i+p->nterminal+1;
|
|
|
+ p->nLookahead = 0;
|
|
|
+
|
|
|
+
|
|
|
+ ** index into yy_action of the action */
|
|
|
+ return i - p->mnLookahead;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+** Return the size of the action table without the trailing syntax error
|
|
|
+** entries.
|
|
|
+*/
|
|
|
+int acttab_action_size(acttab *p){
|
|
|
+ int n = p->nAction;
|
|
|
+ while( n>0 && p->aAction[n-1].lookahead<0 ){ n--; }
|
|
|
+ return n;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+** Routines to construction the finite state machine for the LEMON
|
|
|
+** parser generator.
|
|
|
+*/
|
|
|
+
|
|
|
+
|
|
|
+**
|
|
|
+** Those rules which have a precedence symbol coded in the input
|
|
|
+** grammar using the "[symbol]" construct will already have the
|
|
|
+** rp->precsym field filled. Other rules take as their precedence
|
|
|
+** symbol the first RHS symbol with a defined precedence. If there
|
|
|
+** are not RHS symbols with a defined precedence, the precedence
|
|
|
+** symbol field is left blank.
|
|
|
+*/
|
|
|
+void FindRulePrecedences(struct lemon *xp)
|
|
|
+{
|
|
|
+ struct rule *rp;
|
|
|
+ for(rp=xp->rule; rp; rp=rp->next){
|
|
|
+ if( rp->precsym==0 ){
|
|
|
+ int i, j;
|
|
|
+ for(i=0; i<rp->nrhs && rp->precsym==0; i++){
|
|
|
+ struct symbol *sp = rp->rhs[i];
|
|
|
+ if( sp->type==MULTITERMINAL ){
|
|
|
+ for(j=0; j<sp->nsubsym; j++){
|
|
|
+ if( sp->subsym[j]->prec>=0 ){
|
|
|
+ rp->precsym = sp->subsym[j];
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }else if( sp->prec>=0 ){
|
|
|
+ rp->precsym = rp->rhs[i];
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ return;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+** Then go back and compute the first sets of every nonterminal.
|
|
|
+** The first set is the set of all terminal symbols which can begin
|
|
|
+** a string generated by that nonterminal.
|
|
|
+*/
|
|
|
+void FindFirstSets(struct lemon *lemp)
|
|
|
+{
|
|
|
+ int i, j;
|
|
|
+ struct rule *rp;
|
|
|
+ int progress;
|
|
|
+
|
|
|
+ for(i=0; i<lemp->nsymbol; i++){
|
|
|
+ lemp->symbols[i]->lambda = LEMON_FALSE;
|
|
|
+ }
|
|
|
+ for(i=lemp->nterminal; i<lemp->nsymbol; i++){
|
|
|
+ lemp->symbols[i]->firstset = SetNew();
|
|
|
+ }
|
|
|
+
|
|
|
+
|
|
|
+ do{
|
|
|
+ progress = 0;
|
|
|
+ for(rp=lemp->rule; rp; rp=rp->next){
|
|
|
+ if( rp->lhs->lambda ) continue;
|
|
|
+ for(i=0; i<rp->nrhs; i++){
|
|
|
+ struct symbol *sp = rp->rhs[i];
|
|
|
+ assert( sp->type==NONTERMINAL || sp->lambda==LEMON_FALSE );
|
|
|
+ if( sp->lambda==LEMON_FALSE ) break;
|
|
|
+ }
|
|
|
+ if( i==rp->nrhs ){
|
|
|
+ rp->lhs->lambda = LEMON_TRUE;
|
|
|
+ progress = 1;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }while( progress );
|
|
|
+
|
|
|
+
|
|
|
+ do{
|
|
|
+ struct symbol *s1, *s2;
|
|
|
+ progress = 0;
|
|
|
+ for(rp=lemp->rule; rp; rp=rp->next){
|
|
|
+ s1 = rp->lhs;
|
|
|
+ for(i=0; i<rp->nrhs; i++){
|
|
|
+ s2 = rp->rhs[i];
|
|
|
+ if( s2->type==TERMINAL ){
|
|
|
+ progress += SetAdd(s1->firstset,s2->index);
|
|
|
+ break;
|
|
|
+ }else if( s2->type==MULTITERMINAL ){
|
|
|
+ for(j=0; j<s2->nsubsym; j++){
|
|
|
+ progress += SetAdd(s1->firstset,s2->subsym[j]->index);
|
|
|
+ }
|
|
|
+ break;
|
|
|
+ }else if( s1==s2 ){
|
|
|
+ if( s1->lambda==LEMON_FALSE ) break;
|
|
|
+ }else{
|
|
|
+ progress += SetUnion(s1->firstset,s2->firstset);
|
|
|
+ if( s2->lambda==LEMON_FALSE ) break;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }while( progress );
|
|
|
+ return;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+** are added to between some states so that the LR(1) follow sets
|
|
|
+** can be computed later.
|
|
|
+*/
|
|
|
+PRIVATE struct state *getstate(struct lemon *);
|
|
|
+void FindStates(struct lemon *lemp)
|
|
|
+{
|
|
|
+ struct symbol *sp;
|
|
|
+ struct rule *rp;
|
|
|
+
|
|
|
+ Configlist_init();
|
|
|
+
|
|
|
+
|
|
|
+ if( lemp->start ){
|
|
|
+ sp = Symbol_find(lemp->start);
|
|
|
+ if( sp==0 ){
|
|
|
+ ErrorMsg(lemp->filename,0,
|
|
|
+ "The specified start symbol \"%s\" is not "
|
|
|
+ "in a nonterminal of the grammar. \"%s\" will be used as the start "
|
|
|
+ "symbol instead.",lemp->start,lemp->startRule->lhs->name);
|
|
|
+ lemp->errorcnt++;
|
|
|
+ sp = lemp->startRule->lhs;
|
|
|
+ }
|
|
|
+ }else if( lemp->startRule ){
|
|
|
+ sp = lemp->startRule->lhs;
|
|
|
+ }else{
|
|
|
+ ErrorMsg(lemp->filename,0,"Internal error - no start rule\n");
|
|
|
+ exit(1);
|
|
|
+ }
|
|
|
+
|
|
|
+
|
|
|
+ ** any rule. Report an error if it does. (YACC would generate a new
|
|
|
+ ** start symbol in this case.) */
|
|
|
+ for(rp=lemp->rule; rp; rp=rp->next){
|
|
|
+ int i;
|
|
|
+ for(i=0; i<rp->nrhs; i++){
|
|
|
+ if( rp->rhs[i]==sp ){
|
|
|
+ ErrorMsg(lemp->filename,0,
|
|
|
+ "The start symbol \"%s\" occurs on the "
|
|
|
+ "right-hand side of a rule. This will result in a parser which "
|
|
|
+ "does not work properly.",sp->name);
|
|
|
+ lemp->errorcnt++;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+
|
|
|
+ ** is all rules which have the start symbol as their
|
|
|
+ ** left-hand side */
|
|
|
+ for(rp=sp->rule; rp; rp=rp->nextlhs){
|
|
|
+ struct config *newcfp;
|
|
|
+ rp->lhsStart = 1;
|
|
|
+ newcfp = Configlist_addbasis(rp,0);
|
|
|
+ SetAdd(newcfp->fws,0);
|
|
|
+ }
|
|
|
+
|
|
|
+
|
|
|
+ ** computed automatically during the computation of the first one.
|
|
|
+ ** The returned pointer to the first state is not used. */
|
|
|
+ (void)getstate(lemp);
|
|
|
+ return;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+** list which has been built from calls to Configlist_add.
|
|
|
+*/
|
|
|
+PRIVATE void buildshifts(struct lemon *, struct state *);
|
|
|
+PRIVATE struct state *getstate(struct lemon *lemp)
|
|
|
+{
|
|
|
+ struct config *cfp, *bp;
|
|
|
+ struct state *stp;
|
|
|
+
|
|
|
+
|
|
|
+ ** by prior calls to "Configlist_addbasis()". */
|
|
|
+ Configlist_sortbasis();
|
|
|
+ bp = Configlist_basis();
|
|
|
+
|
|
|
+
|
|
|
+ stp = State_find(bp);
|
|
|
+ if( stp ){
|
|
|
+
|
|
|
+ ** propagation links from the state under construction into the
|
|
|
+ ** preexisting state, then return a pointer to the preexisting state */
|
|
|
+ struct config *x, *y;
|
|
|
+ for(x=bp, y=stp->bp; x && y; x=x->bp, y=y->bp){
|
|
|
+ Plink_copy(&y->bplp,x->bplp);
|
|
|
+ Plink_delete(x->fplp);
|
|
|
+ x->fplp = x->bplp = 0;
|
|
|
+ }
|
|
|
+ cfp = Configlist_return();
|
|
|
+ Configlist_eat(cfp);
|
|
|
+ }else{
|
|
|
+
|
|
|
+ Configlist_closure(lemp);
|
|
|
+ Configlist_sort();
|
|
|
+ cfp = Configlist_return();
|
|
|
+ stp = State_new();
|
|
|
+ MemoryCheck(stp);
|
|
|
+ stp->bp = bp;
|
|
|
+ stp->cfp = cfp;
|
|
|
+ stp->statenum = lemp->nstate++;
|
|
|
+ stp->ap = 0;
|
|
|
+ State_insert(stp,stp->bp);
|
|
|
+ buildshifts(lemp,stp);
|
|
|
+ }
|
|
|
+ return stp;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+** Return true if two symbols are the same.
|
|
|
+*/
|
|
|
+int same_symbol(struct symbol *a, struct symbol *b)
|
|
|
+{
|
|
|
+ int i;
|
|
|
+ if( a==b ) return 1;
|
|
|
+ if( a->type!=MULTITERMINAL ) return 0;
|
|
|
+ if( b->type!=MULTITERMINAL ) return 0;
|
|
|
+ if( a->nsubsym!=b->nsubsym ) return 0;
|
|
|
+ for(i=0; i<a->nsubsym; i++){
|
|
|
+ if( a->subsym[i]!=b->subsym[i] ) return 0;
|
|
|
+ }
|
|
|
+ return 1;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+** state is any state which can be reached by a shift action.
|
|
|
+*/
|
|
|
+PRIVATE void buildshifts(struct lemon *lemp, struct state *stp)
|
|
|
+{
|
|
|
+ struct config *cfp;
|
|
|
+ struct config *bcfp;
|
|
|
+ struct config *newcfg;
|
|
|
+ struct symbol *sp;
|
|
|
+ struct symbol *bsp;
|
|
|
+ struct state *newstp;
|
|
|
+
|
|
|
+
|
|
|
+ ** state. Initially, all configurations are incomplete */
|
|
|
+ for(cfp=stp->cfp; cfp; cfp=cfp->next) cfp->status = INCOMPLETE;
|
|
|
+
|
|
|
+
|
|
|
+ for(cfp=stp->cfp; cfp; cfp=cfp->next){
|
|
|
+ if( cfp->status==COMPLETE ) continue;
|
|
|
+ if( cfp->dot>=cfp->rp->nrhs ) continue;
|
|
|
+ Configlist_reset();
|
|
|
+ sp = cfp->rp->rhs[cfp->dot];
|
|
|
+
|
|
|
+
|
|
|
+ ** following its dot, add the same configuration to the basis set under
|
|
|
+ ** construction but with the dot shifted one symbol to the right. */
|
|
|
+ for(bcfp=cfp; bcfp; bcfp=bcfp->next){
|
|
|
+ if( bcfp->status==COMPLETE ) continue;
|
|
|
+ if( bcfp->dot>=bcfp->rp->nrhs ) continue;
|
|
|
+ bsp = bcfp->rp->rhs[bcfp->dot];
|
|
|
+ if( !same_symbol(bsp,sp) ) continue;
|
|
|
+ bcfp->status = COMPLETE;
|
|
|
+ newcfg = Configlist_addbasis(bcfp->rp,bcfp->dot+1);
|
|
|
+ Plink_add(&newcfg->bplp,bcfp);
|
|
|
+ }
|
|
|
+
|
|
|
+
|
|
|
+ ** constructed in the preceding loop */
|
|
|
+ newstp = getstate(lemp);
|
|
|
+
|
|
|
+
|
|
|
+ ** on the symbol "sp" */
|
|
|
+ if( sp->type==MULTITERMINAL ){
|
|
|
+ int i;
|
|
|
+ for(i=0; i<sp->nsubsym; i++){
|
|
|
+ Action_add(&stp->ap,SHIFT,sp->subsym[i],(char*)newstp);
|
|
|
+ }
|
|
|
+ }else{
|
|
|
+ Action_add(&stp->ap,SHIFT,sp,(char *)newstp);
|
|
|
+ }
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+** Construct the propagation links
|
|
|
+*/
|
|
|
+void FindLinks(struct lemon *lemp)
|
|
|
+{
|
|
|
+ int i;
|
|
|
+ struct config *cfp, *other;
|
|
|
+ struct state *stp;
|
|
|
+ struct plink *plp;
|
|
|
+
|
|
|
+
|
|
|
+ ** Add to every propagate link a pointer back to the state to
|
|
|
+ ** which the link is attached. */
|
|
|
+ for(i=0; i<lemp->nstate; i++){
|
|
|
+ stp = lemp->sorted[i];
|
|
|
+ for(cfp=stp?stp->cfp:0; cfp; cfp=cfp->next){
|
|
|
+ cfp->stp = stp;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+
|
|
|
+ ** links are used in the follow-set computation. */
|
|
|
+ for(i=0; i<lemp->nstate; i++){
|
|
|
+ stp = lemp->sorted[i];
|
|
|
+ for(cfp=stp?stp->cfp:0; cfp; cfp=cfp->next){
|
|
|
+ for(plp=cfp->bplp; plp; plp=plp->next){
|
|
|
+ other = plp->cfp;
|
|
|
+ Plink_add(&other->fplp,cfp);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+**
|
|
|
+** A followset is the set of all symbols which can come immediately
|
|
|
+** after a configuration.
|
|
|
+*/
|
|
|
+void FindFollowSets(struct lemon *lemp)
|
|
|
+{
|
|
|
+ int i;
|
|
|
+ struct config *cfp;
|
|
|
+ struct plink *plp;
|
|
|
+ int progress;
|
|
|
+ int change;
|
|
|
+
|
|
|
+ for(i=0; i<lemp->nstate; i++){
|
|
|
+ assert( lemp->sorted[i]!=0 );
|
|
|
+ for(cfp=lemp->sorted[i]->cfp; cfp; cfp=cfp->next){
|
|
|
+ cfp->status = INCOMPLETE;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ do{
|
|
|
+ progress = 0;
|
|
|
+ for(i=0; i<lemp->nstate; i++){
|
|
|
+ assert( lemp->sorted[i]!=0 );
|
|
|
+ for(cfp=lemp->sorted[i]->cfp; cfp; cfp=cfp->next){
|
|
|
+ if( cfp->status==COMPLETE ) continue;
|
|
|
+ for(plp=cfp->fplp; plp; plp=plp->next){
|
|
|
+ change = SetUnion(plp->cfp->fws,cfp->fws);
|
|
|
+ if( change ){
|
|
|
+ plp->cfp->status = INCOMPLETE;
|
|
|
+ progress = 1;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ cfp->status = COMPLETE;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }while( progress );
|
|
|
+}
|
|
|
+
|
|
|
+static int resolve_conflict(struct action *,struct action *);
|
|
|
+
|
|
|
+
|
|
|
+*/
|
|
|
+void FindActions(struct lemon *lemp)
|
|
|
+{
|
|
|
+ int i,j;
|
|
|
+ struct config *cfp;
|
|
|
+ struct state *stp;
|
|
|
+ struct symbol *sp;
|
|
|
+ struct rule *rp;
|
|
|
+
|
|
|
+
|
|
|
+ ** A reduce action is added for each element of the followset of
|
|
|
+ ** a configuration which has its dot at the extreme right.
|
|
|
+ */
|
|
|
+ for(i=0; i<lemp->nstate; i++){
|
|
|
+ stp = lemp->sorted[i];
|
|
|
+ for(cfp=stp->cfp; cfp; cfp=cfp->next){
|
|
|
+ if( cfp->rp->nrhs==cfp->dot ){
|
|
|
+ for(j=0; j<lemp->nterminal; j++){
|
|
|
+ if( SetFind(cfp->fws,j) ){
|
|
|
+
|
|
|
+ ** rule "cfp->rp" if the lookahead symbol is "lemp->symbols[j]" */
|
|
|
+ Action_add(&stp->ap,REDUCE,lemp->symbols[j],(char *)cfp->rp);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+
|
|
|
+ if( lemp->start ){
|
|
|
+ sp = Symbol_find(lemp->start);
|
|
|
+ if( sp==0 ){
|
|
|
+ if( lemp->startRule==0 ){
|
|
|
+ fprintf(stderr, "internal error on source line %d: no start rule\n",
|
|
|
+ __LINE__);
|
|
|
+ exit(1);
|
|
|
+ }
|
|
|
+ sp = lemp->startRule->lhs;
|
|
|
+ }
|
|
|
+ }else{
|
|
|
+ sp = lemp->startRule->lhs;
|
|
|
+ }
|
|
|
+
|
|
|
+ ** finite state machine) an action to ACCEPT if the lookahead is the
|
|
|
+ ** start nonterminal. */
|
|
|
+ Action_add(&lemp->sorted[0]->ap,ACCEPT,sp,0);
|
|
|
+
|
|
|
+
|
|
|
+ for(i=0; i<lemp->nstate; i++){
|
|
|
+ struct action *ap, *nap;
|
|
|
+ stp = lemp->sorted[i];
|
|
|
+
|
|
|
+ stp->ap = Action_sort(stp->ap);
|
|
|
+ for(ap=stp->ap; ap && ap->next; ap=ap->next){
|
|
|
+ for(nap=ap->next; nap && nap->sp==ap->sp; nap=nap->next){
|
|
|
+
|
|
|
+ ** Figure out which one should be used */
|
|
|
+ lemp->nconflict += resolve_conflict(ap,nap);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+
|
|
|
+ for(rp=lemp->rule; rp; rp=rp->next) rp->canReduce = LEMON_FALSE;
|
|
|
+ for(i=0; i<lemp->nstate; i++){
|
|
|
+ struct action *ap;
|
|
|
+ for(ap=lemp->sorted[i]->ap; ap; ap=ap->next){
|
|
|
+ if( ap->type==REDUCE ) ap->x.rp->canReduce = LEMON_TRUE;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ for(rp=lemp->rule; rp; rp=rp->next){
|
|
|
+ if( rp->canReduce ) continue;
|
|
|
+ ErrorMsg(lemp->filename,rp->ruleline,"This rule can not be reduced.\n");
|
|
|
+ lemp->errorcnt++;
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+** conflict can't be resolved, return non-zero.
|
|
|
+**
|
|
|
+** NO LONGER TRUE:
|
|
|
+** To resolve a conflict, first look to see if either action
|
|
|
+** is on an error rule. In that case, take the action which
|
|
|
+** is not associated with the error rule. If neither or both
|
|
|
+** actions are associated with an error rule, then try to
|
|
|
+** use precedence to resolve the conflict.
|
|
|
+**
|
|
|
+** If either action is a SHIFT, then it must be apx. This
|
|
|
+** function won't work if apx->type==REDUCE and apy->type==SHIFT.
|
|
|
+*/
|
|
|
+static int resolve_conflict(
|
|
|
+ struct action *apx,
|
|
|
+ struct action *apy
|
|
|
+){
|
|
|
+ struct symbol *spx, *spy;
|
|
|
+ int errcnt = 0;
|
|
|
+ assert( apx->sp==apy->sp );
|
|
|
+ if( apx->type==SHIFT && apy->type==SHIFT ){
|
|
|
+ apy->type = SSCONFLICT;
|
|
|
+ errcnt++;
|
|
|
+ }
|
|
|
+ if( apx->type==SHIFT && apy->type==REDUCE ){
|
|
|
+ spx = apx->sp;
|
|
|
+ spy = apy->x.rp->precsym;
|
|
|
+ if( spy==0 || spx->prec<0 || spy->prec<0 ){
|
|
|
+
|
|
|
+ apy->type = SRCONFLICT;
|
|
|
+ errcnt++;
|
|
|
+ }else if( spx->prec>spy->prec ){
|
|
|
+ apy->type = RD_RESOLVED;
|
|
|
+ }else if( spx->prec<spy->prec ){
|
|
|
+ apx->type = SH_RESOLVED;
|
|
|
+ }else if( spx->prec==spy->prec && spx->assoc==RIGHT ){
|
|
|
+ apy->type = RD_RESOLVED;
|
|
|
+ }else if( spx->prec==spy->prec && spx->assoc==LEFT ){
|
|
|
+ apx->type = SH_RESOLVED;
|
|
|
+ }else{
|
|
|
+ assert( spx->prec==spy->prec && spx->assoc==NONE );
|
|
|
+ apx->type = ERROR;
|
|
|
+ }
|
|
|
+ }else if( apx->type==REDUCE && apy->type==REDUCE ){
|
|
|
+ spx = apx->x.rp->precsym;
|
|
|
+ spy = apy->x.rp->precsym;
|
|
|
+ if( spx==0 || spy==0 || spx->prec<0 ||
|
|
|
+ spy->prec<0 || spx->prec==spy->prec ){
|
|
|
+ apy->type = RRCONFLICT;
|
|
|
+ errcnt++;
|
|
|
+ }else if( spx->prec>spy->prec ){
|
|
|
+ apy->type = RD_RESOLVED;
|
|
|
+ }else if( spx->prec<spy->prec ){
|
|
|
+ apx->type = RD_RESOLVED;
|
|
|
+ }
|
|
|
+ }else{
|
|
|
+ assert(
|
|
|
+ apx->type==SH_RESOLVED ||
|
|
|
+ apx->type==RD_RESOLVED ||
|
|
|
+ apx->type==SSCONFLICT ||
|
|
|
+ apx->type==SRCONFLICT ||
|
|
|
+ apx->type==RRCONFLICT ||
|
|
|
+ apy->type==SH_RESOLVED ||
|
|
|
+ apy->type==RD_RESOLVED ||
|
|
|
+ apy->type==SSCONFLICT ||
|
|
|
+ apy->type==SRCONFLICT ||
|
|
|
+ apy->type==RRCONFLICT
|
|
|
+ );
|
|
|
+
|
|
|
+ ** REDUCEs on the list. If we reach this point it must be because
|
|
|
+ ** the parser conflict had already been resolved. */
|
|
|
+ }
|
|
|
+ return errcnt;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+** Routines to processing a configuration list and building a state
|
|
|
+** in the LEMON parser generator.
|
|
|
+*/
|
|
|
+
|
|
|
+static struct config *freelist = 0;
|
|
|
+static struct config *current = 0;
|
|
|
+static struct config **currentend = 0;
|
|
|
+static struct config *basis = 0;
|
|
|
+static struct config **basisend = 0;
|
|
|
+
|
|
|
+
|
|
|
+PRIVATE struct config *newconfig(void){
|
|
|
+ return (struct config*)calloc(1, sizeof(struct config));
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+PRIVATE void deleteconfig(struct config *old)
|
|
|
+{
|
|
|
+ old->next = freelist;
|
|
|
+ freelist = old;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+void Configlist_init(void){
|
|
|
+ current = 0;
|
|
|
+ currentend = ¤t;
|
|
|
+ basis = 0;
|
|
|
+ basisend = &basis;
|
|
|
+ Configtable_init();
|
|
|
+ return;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+void Configlist_reset(void){
|
|
|
+ current = 0;
|
|
|
+ currentend = ¤t;
|
|
|
+ basis = 0;
|
|
|
+ basisend = &basis;
|
|
|
+ Configtable_clear(0);
|
|
|
+ return;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+struct config *Configlist_add(
|
|
|
+ struct rule *rp, /* The rule */
|
|
|
+ int dot
|
|
|
+){
|
|
|
+ struct config *cfp, model;
|
|
|
+
|
|
|
+ assert( currentend!=0 );
|
|
|
+ model.rp = rp;
|
|
|
+ model.dot = dot;
|
|
|
+ cfp = Configtable_find(&model);
|
|
|
+ if( cfp==0 ){
|
|
|
+ cfp = newconfig();
|
|
|
+ cfp->rp = rp;
|
|
|
+ cfp->dot = dot;
|
|
|
+ cfp->fws = SetNew();
|
|
|
+ cfp->stp = 0;
|
|
|
+ cfp->fplp = cfp->bplp = 0;
|
|
|
+ cfp->next = 0;
|
|
|
+ cfp->bp = 0;
|
|
|
+ *currentend = cfp;
|
|
|
+ currentend = &cfp->next;
|
|
|
+ Configtable_insert(cfp);
|
|
|
+ }
|
|
|
+ return cfp;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+struct config *Configlist_addbasis(struct rule *rp, int dot)
|
|
|
+{
|
|
|
+ struct config *cfp, model;
|
|
|
+
|
|
|
+ assert( basisend!=0 );
|
|
|
+ assert( currentend!=0 );
|
|
|
+ model.rp = rp;
|
|
|
+ model.dot = dot;
|
|
|
+ cfp = Configtable_find(&model);
|
|
|
+ if( cfp==0 ){
|
|
|
+ cfp = newconfig();
|
|
|
+ cfp->rp = rp;
|
|
|
+ cfp->dot = dot;
|
|
|
+ cfp->fws = SetNew();
|
|
|
+ cfp->stp = 0;
|
|
|
+ cfp->fplp = cfp->bplp = 0;
|
|
|
+ cfp->next = 0;
|
|
|
+ cfp->bp = 0;
|
|
|
+ *currentend = cfp;
|
|
|
+ currentend = &cfp->next;
|
|
|
+ *basisend = cfp;
|
|
|
+ basisend = &cfp->bp;
|
|
|
+ Configtable_insert(cfp);
|
|
|
+ }
|
|
|
+ return cfp;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+void Configlist_closure(struct lemon *lemp)
|
|
|
+{
|
|
|
+ struct config *cfp, *newcfp;
|
|
|
+ struct rule *rp, *newrp;
|
|
|
+ struct symbol *sp, *xsp;
|
|
|
+ int i, dot;
|
|
|
+
|
|
|
+ assert( currentend!=0 );
|
|
|
+ for(cfp=current; cfp; cfp=cfp->next){
|
|
|
+ rp = cfp->rp;
|
|
|
+ dot = cfp->dot;
|
|
|
+ if( dot>=rp->nrhs ) continue;
|
|
|
+ sp = rp->rhs[dot];
|
|
|
+ if( sp->type==NONTERMINAL ){
|
|
|
+ if( sp->rule==0 && sp!=lemp->errsym ){
|
|
|
+ ErrorMsg(lemp->filename,rp->line,"Nonterminal \"%s\" has no rules.",
|
|
|
+ sp->name);
|
|
|
+ lemp->errorcnt++;
|
|
|
+ }
|
|
|
+ for(newrp=sp->rule; newrp; newrp=newrp->nextlhs){
|
|
|
+ newcfp = Configlist_add(newrp,0);
|
|
|
+ for(i=dot+1; i<rp->nrhs; i++){
|
|
|
+ xsp = rp->rhs[i];
|
|
|
+ if( xsp->type==TERMINAL ){
|
|
|
+ SetAdd(newcfp->fws,xsp->index);
|
|
|
+ break;
|
|
|
+ }else if( xsp->type==MULTITERMINAL ){
|
|
|
+ int k;
|
|
|
+ for(k=0; k<xsp->nsubsym; k++){
|
|
|
+ SetAdd(newcfp->fws, xsp->subsym[k]->index);
|
|
|
+ }
|
|
|
+ break;
|
|
|
+ }else{
|
|
|
+ SetUnion(newcfp->fws,xsp->firstset);
|
|
|
+ if( xsp->lambda==LEMON_FALSE ) break;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ if( i==rp->nrhs ) Plink_add(&cfp->fplp,newcfp);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ return;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+void Configlist_sort(void){
|
|
|
+ current = (struct config*)msort((char*)current,(char**)&(current->next),
|
|
|
+ Configcmp);
|
|
|
+ currentend = 0;
|
|
|
+ return;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+void Configlist_sortbasis(void){
|
|
|
+ basis = (struct config*)msort((char*)current,(char**)&(current->bp),
|
|
|
+ Configcmp);
|
|
|
+ basisend = 0;
|
|
|
+ return;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+** reset the list */
|
|
|
+struct config *Configlist_return(void){
|
|
|
+ struct config *old;
|
|
|
+ old = current;
|
|
|
+ current = 0;
|
|
|
+ currentend = 0;
|
|
|
+ return old;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+** reset the list */
|
|
|
+struct config *Configlist_basis(void){
|
|
|
+ struct config *old;
|
|
|
+ old = basis;
|
|
|
+ basis = 0;
|
|
|
+ basisend = 0;
|
|
|
+ return old;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+void Configlist_eat(struct config *cfp)
|
|
|
+{
|
|
|
+ struct config *nextcfp;
|
|
|
+ for(; cfp; cfp=nextcfp){
|
|
|
+ nextcfp = cfp->next;
|
|
|
+ assert( cfp->fplp==0 );
|
|
|
+ assert( cfp->bplp==0 );
|
|
|
+ if( cfp->fws ) SetFree(cfp->fws);
|
|
|
+ deleteconfig(cfp);
|
|
|
+ }
|
|
|
+ return;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+** Code for printing error message.
|
|
|
+*/
|
|
|
+
|
|
|
+void ErrorMsg(const char *filename, int lineno, const char *format, ...){
|
|
|
+ va_list ap;
|
|
|
+ fprintf(stderr, "%s:%d: ", filename, lineno);
|
|
|
+ va_start(ap, format);
|
|
|
+ vfprintf(stderr,format,ap);
|
|
|
+ va_end(ap);
|
|
|
+ fprintf(stderr, "\n");
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+** Main program file for the LEMON parser generator.
|
|
|
+*/
|
|
|
+
|
|
|
+
|
|
|
+** is used mostly by the "MemoryCheck" macro in struct.h
|
|
|
+*/
|
|
|
+void memory_error(void){
|
|
|
+ fprintf(stderr,"Out of memory. Aborting...\n");
|
|
|
+ exit(1);
|
|
|
+}
|
|
|
+
|
|
|
+static int nDefine = 0;
|
|
|
+static char **azDefine = 0;
|
|
|
+
|
|
|
+
|
|
|
+** Add the macro defined to the azDefine array.
|
|
|
+*/
|
|
|
+static void handle_D_option(char *z){
|
|
|
+ char **paz;
|
|
|
+ nDefine++;
|
|
|
+ azDefine = (char **) realloc(azDefine, sizeof(azDefine[0])*nDefine);
|
|
|
+ if( azDefine==0 ){
|
|
|
+ fprintf(stderr,"out of memory\n");
|
|
|
+ exit(1);
|
|
|
+ }
|
|
|
+ paz = &azDefine[nDefine-1];
|
|
|
+ *paz = (char *) malloc( lemonStrlen(z)+1 );
|
|
|
+ if( *paz==0 ){
|
|
|
+ fprintf(stderr,"out of memory\n");
|
|
|
+ exit(1);
|
|
|
+ }
|
|
|
+ lemon_strcpy(*paz, z);
|
|
|
+ for(z=*paz; *z && *z!='='; z++){}
|
|
|
+ *z = 0;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+*/
|
|
|
+static char *outputDir = NULL;
|
|
|
+static void handle_d_option(char *z){
|
|
|
+ outputDir = (char *) malloc( lemonStrlen(z)+1 );
|
|
|
+ if( outputDir==0 ){
|
|
|
+ fprintf(stderr,"out of memory\n");
|
|
|
+ exit(1);
|
|
|
+ }
|
|
|
+ lemon_strcpy(outputDir, z);
|
|
|
+}
|
|
|
+
|
|
|
+static char *user_templatename = NULL;
|
|
|
+static void handle_T_option(char *z){
|
|
|
+ user_templatename = (char *) malloc( lemonStrlen(z)+1 );
|
|
|
+ if( user_templatename==0 ){
|
|
|
+ memory_error();
|
|
|
+ }
|
|
|
+ lemon_strcpy(user_templatename, z);
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+static struct rule *Rule_merge(struct rule *pA, struct rule *pB){
|
|
|
+ struct rule *pFirst = 0;
|
|
|
+ struct rule **ppPrev = &pFirst;
|
|
|
+ while( pA && pB ){
|
|
|
+ if( pA->iRule<pB->iRule ){
|
|
|
+ *ppPrev = pA;
|
|
|
+ ppPrev = &pA->next;
|
|
|
+ pA = pA->next;
|
|
|
+ }else{
|
|
|
+ *ppPrev = pB;
|
|
|
+ ppPrev = &pB->next;
|
|
|
+ pB = pB->next;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ if( pA ){
|
|
|
+ *ppPrev = pA;
|
|
|
+ }else{
|
|
|
+ *ppPrev = pB;
|
|
|
+ }
|
|
|
+ return pFirst;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+** Sort a list of rules in order of increasing iRule value
|
|
|
+*/
|
|
|
+static struct rule *Rule_sort(struct rule *rp){
|
|
|
+ unsigned int i;
|
|
|
+ struct rule *pNext;
|
|
|
+ struct rule *x[32];
|
|
|
+ memset(x, 0, sizeof(x));
|
|
|
+ while( rp ){
|
|
|
+ pNext = rp->next;
|
|
|
+ rp->next = 0;
|
|
|
+ for(i=0; i<sizeof(x)/sizeof(x[0])-1 && x[i]; i++){
|
|
|
+ rp = Rule_merge(x[i], rp);
|
|
|
+ x[i] = 0;
|
|
|
+ }
|
|
|
+ x[i] = rp;
|
|
|
+ rp = pNext;
|
|
|
+ }
|
|
|
+ rp = 0;
|
|
|
+ for(i=0; i<sizeof(x)/sizeof(x[0]); i++){
|
|
|
+ rp = Rule_merge(x[i], rp);
|
|
|
+ }
|
|
|
+ return rp;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+static const char *minimum_size_type(int lwr, int upr, int *pnByte);
|
|
|
+
|
|
|
+
|
|
|
+*/
|
|
|
+static void stats_line(const char *zLabel, int iValue){
|
|
|
+ int nLabel = lemonStrlen(zLabel);
|
|
|
+ printf(" %s%.*s %5d\n", zLabel,
|
|
|
+ 35-nLabel, "................................",
|
|
|
+ iValue);
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+int main(int argc, char **argv){
|
|
|
+ static int version = 0;
|
|
|
+ static int rpflag = 0;
|
|
|
+ static int basisflag = 0;
|
|
|
+ static int compress = 0;
|
|
|
+ static int quiet = 0;
|
|
|
+ static int statistics = 0;
|
|
|
+ static int mhflag = 0;
|
|
|
+ static int nolinenosflag = 0;
|
|
|
+ static int noResort = 0;
|
|
|
+ static int sqlFlag = 0;
|
|
|
+ static int printPP = 0;
|
|
|
+
|
|
|
+ static struct s_options options[] = {
|
|
|
+ {OPT_FLAG, "b", (char*)&basisflag, "Print only the basis in report."},
|
|
|
+ {OPT_FLAG, "c", (char*)&compress, "Don't compress the action table."},
|
|
|
+ {OPT_FSTR, "d", (char*)&handle_d_option, "Output directory. Default '.'"},
|
|
|
+ {OPT_FSTR, "D", (char*)handle_D_option, "Define an %ifdef macro."},
|
|
|
+ {OPT_FLAG, "E", (char*)&printPP, "Print input file after preprocessing."},
|
|
|
+ {OPT_FSTR, "f", 0, "Ignored. (Placeholder for -f compiler options.)"},
|
|
|
+ {OPT_FLAG, "g", (char*)&rpflag, "Print grammar without actions."},
|
|
|
+ {OPT_FSTR, "I", 0, "Ignored. (Placeholder for '-I' compiler options.)"},
|
|
|
+ {OPT_FLAG, "m", (char*)&mhflag, "Output a makeheaders compatible file."},
|
|
|
+ {OPT_FLAG, "l", (char*)&nolinenosflag, "Do not print #line statements."},
|
|
|
+ {OPT_FSTR, "O", 0, "Ignored. (Placeholder for '-O' compiler options.)"},
|
|
|
+ {OPT_FLAG, "p", (char*)&showPrecedenceConflict,
|
|
|
+ "Show conflicts resolved by precedence rules"},
|
|
|
+ {OPT_FLAG, "q", (char*)&quiet, "(Quiet) Don't print the report file."},
|
|
|
+ {OPT_FLAG, "r", (char*)&noResort, "Do not sort or renumber states"},
|
|
|
+ {OPT_FLAG, "s", (char*)&statistics,
|
|
|
+ "Print parser stats to standard output."},
|
|
|
+ {OPT_FLAG, "S", (char*)&sqlFlag,
|
|
|
+ "Generate the *.sql file describing the parser tables."},
|
|
|
+ {OPT_FLAG, "x", (char*)&version, "Print the version number."},
|
|
|
+ {OPT_FSTR, "T", (char*)handle_T_option, "Specify a template file."},
|
|
|
+ {OPT_FSTR, "W", 0, "Ignored. (Placeholder for '-W' compiler options.)"},
|
|
|
+ {OPT_FLAG,0,0,0}
|
|
|
+ };
|
|
|
+ int i;
|
|
|
+ int exitcode;
|
|
|
+ struct lemon lem;
|
|
|
+ struct rule *rp;
|
|
|
+
|
|
|
+ (void)argc;
|
|
|
+ OptInit(argv,options,stderr);
|
|
|
+ if( version ){
|
|
|
+ printf("Lemon version 1.0\n");
|
|
|
+ exit(0);
|
|
|
+ }
|
|
|
+ if( OptNArgs()!=1 ){
|
|
|
+ fprintf(stderr,"Exactly one filename argument is required.\n");
|
|
|
+ exit(1);
|
|
|
+ }
|
|
|
+ memset(&lem, 0, sizeof(lem));
|
|
|
+ lem.errorcnt = 0;
|
|
|
+
|
|
|
+
|
|
|
+ Strsafe_init();
|
|
|
+ Symbol_init();
|
|
|
+ State_init();
|
|
|
+ lem.argv0 = argv[0];
|
|
|
+ lem.filename = OptArg(0);
|
|
|
+ lem.basisflag = basisflag;
|
|
|
+ lem.nolinenosflag = nolinenosflag;
|
|
|
+ lem.printPreprocessed = printPP;
|
|
|
+ Symbol_new("$");
|
|
|
+
|
|
|
+
|
|
|
+ Parse(&lem);
|
|
|
+ if( lem.printPreprocessed || lem.errorcnt ) exit(lem.errorcnt);
|
|
|
+ if( lem.nrule==0 ){
|
|
|
+ fprintf(stderr,"Empty grammar.\n");
|
|
|
+ exit(1);
|
|
|
+ }
|
|
|
+ lem.errsym = Symbol_find("error");
|
|
|
+
|
|
|
+
|
|
|
+ Symbol_new("{default}");
|
|
|
+ lem.nsymbol = Symbol_count();
|
|
|
+ lem.symbols = Symbol_arrayof();
|
|
|
+ for(i=0; i<lem.nsymbol; i++) lem.symbols[i]->index = i;
|
|
|
+ qsort(lem.symbols,lem.nsymbol,sizeof(struct symbol*), Symbolcmpp);
|
|
|
+ for(i=0; i<lem.nsymbol; i++) lem.symbols[i]->index = i;
|
|
|
+ while( lem.symbols[i-1]->type==MULTITERMINAL ){ i--; }
|
|
|
+ assert( strcmp(lem.symbols[i-1]->name,"{default}")==0 );
|
|
|
+ lem.nsymbol = i - 1;
|
|
|
+ for(i=1; ISUPPER(lem.symbols[i]->name[0]); i++);
|
|
|
+ lem.nterminal = i;
|
|
|
+
|
|
|
+
|
|
|
+ ** reduce action C-code associated with them last, so that the switch()
|
|
|
+ ** statement that selects reduction actions will have a smaller jump table.
|
|
|
+ */
|
|
|
+ for(i=0, rp=lem.rule; rp; rp=rp->next){
|
|
|
+ rp->iRule = rp->code ? i++ : -1;
|
|
|
+ }
|
|
|
+ lem.nruleWithAction = i;
|
|
|
+ for(rp=lem.rule; rp; rp=rp->next){
|
|
|
+ if( rp->iRule<0 ) rp->iRule = i++;
|
|
|
+ }
|
|
|
+ lem.startRule = lem.rule;
|
|
|
+ lem.rule = Rule_sort(lem.rule);
|
|
|
+
|
|
|
+
|
|
|
+ if( rpflag ){
|
|
|
+ Reprint(&lem);
|
|
|
+ }else{
|
|
|
+
|
|
|
+ SetSize(lem.nterminal+1);
|
|
|
+
|
|
|
+
|
|
|
+ FindRulePrecedences(&lem);
|
|
|
+
|
|
|
+
|
|
|
+ ** nonterminal */
|
|
|
+ FindFirstSets(&lem);
|
|
|
+
|
|
|
+
|
|
|
+ ** links so that the follow-set can be computed later */
|
|
|
+ lem.nstate = 0;
|
|
|
+ FindStates(&lem);
|
|
|
+ lem.sorted = State_arrayof();
|
|
|
+
|
|
|
+
|
|
|
+ FindLinks(&lem);
|
|
|
+
|
|
|
+
|
|
|
+ FindFollowSets(&lem);
|
|
|
+
|
|
|
+
|
|
|
+ FindActions(&lem);
|
|
|
+
|
|
|
+
|
|
|
+ if( compress==0 ) CompressTables(&lem);
|
|
|
+
|
|
|
+
|
|
|
+ ** occur at the end. This is an optimization that helps make the
|
|
|
+ ** generated parser tables smaller. */
|
|
|
+ if( noResort==0 ) ResortStates(&lem);
|
|
|
+
|
|
|
+
|
|
|
+ if( !quiet ) ReportOutput(&lem);
|
|
|
+
|
|
|
+
|
|
|
+ ReportTable(&lem, mhflag, sqlFlag);
|
|
|
+
|
|
|
+
|
|
|
+ ** omitted if the "-m" option is used because makeheaders will
|
|
|
+ ** generate the file for us.) */
|
|
|
+ if( !mhflag ) ReportHeader(&lem);
|
|
|
+ }
|
|
|
+ if( statistics ){
|
|
|
+ printf("Parser statistics:\n");
|
|
|
+ stats_line("terminal symbols", lem.nterminal);
|
|
|
+ stats_line("non-terminal symbols", lem.nsymbol - lem.nterminal);
|
|
|
+ stats_line("total symbols", lem.nsymbol);
|
|
|
+ stats_line("rules", lem.nrule);
|
|
|
+ stats_line("states", lem.nxstate);
|
|
|
+ stats_line("conflicts", lem.nconflict);
|
|
|
+ stats_line("action table entries", lem.nactiontab);
|
|
|
+ stats_line("lookahead table entries", lem.nlookaheadtab);
|
|
|
+ stats_line("total table size (bytes)", lem.tablesize);
|
|
|
+ }
|
|
|
+ if( lem.nconflict > 0 ){
|
|
|
+ fprintf(stderr,"%d parsing conflicts.\n",lem.nconflict);
|
|
|
+ }
|
|
|
+
|
|
|
+
|
|
|
+ exitcode = ((lem.errorcnt > 0) || (lem.nconflict > 0)) ? 1 : 0;
|
|
|
+ exit(exitcode);
|
|
|
+ return (exitcode);
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+** A generic merge-sort program.
|
|
|
+**
|
|
|
+** USAGE:
|
|
|
+** Let "ptr" be a pointer to some structure which is at the head of
|
|
|
+** a null-terminated list. Then to sort the list call:
|
|
|
+**
|
|
|
+** ptr = msort(ptr,&(ptr->next),cmpfnc);
|
|
|
+**
|
|
|
+** In the above, "cmpfnc" is a pointer to a function which compares
|
|
|
+** two instances of the structure and returns an integer, as in
|
|
|
+** strcmp. The second argument is a pointer to the pointer to the
|
|
|
+** second element of the linked list. This address is used to compute
|
|
|
+** the offset to the "next" field within the structure. The offset to
|
|
|
+** the "next" field must be constant for all structures in the list.
|
|
|
+**
|
|
|
+** The function returns a new pointer which is the head of the list
|
|
|
+** after sorting.
|
|
|
+**
|
|
|
+** ALGORITHM:
|
|
|
+** Merge-sort.
|
|
|
+*/
|
|
|
+
|
|
|
+
|
|
|
+** Return a pointer to the next structure in the linked list.
|
|
|
+*/
|
|
|
+#define NEXT(A) (*(char**)(((char*)A)+offset))
|
|
|
+
|
|
|
+
|
|
|
+** Inputs:
|
|
|
+** a: A sorted, null-terminated linked list. (May be null).
|
|
|
+** b: A sorted, null-terminated linked list. (May be null).
|
|
|
+** cmp: A pointer to the comparison function.
|
|
|
+** offset: Offset in the structure to the "next" field.
|
|
|
+**
|
|
|
+** Return Value:
|
|
|
+** A pointer to the head of a sorted list containing the elements
|
|
|
+** of both a and b.
|
|
|
+**
|
|
|
+** Side effects:
|
|
|
+** The "next" pointers for elements in the lists a and b are
|
|
|
+** changed.
|
|
|
+*/
|
|
|
+static char *merge(
|
|
|
+ char *a,
|
|
|
+ char *b,
|
|
|
+ int (*cmp)(const char*,const char*),
|
|
|
+ int offset
|
|
|
+){
|
|
|
+ char *ptr, *head;
|
|
|
+
|
|
|
+ if( a==0 ){
|
|
|
+ head = b;
|
|
|
+ }else if( b==0 ){
|
|
|
+ head = a;
|
|
|
+ }else{
|
|
|
+ if( (*cmp)(a,b)<=0 ){
|
|
|
+ ptr = a;
|
|
|
+ a = NEXT(a);
|
|
|
+ }else{
|
|
|
+ ptr = b;
|
|
|
+ b = NEXT(b);
|
|
|
+ }
|
|
|
+ head = ptr;
|
|
|
+ while( a && b ){
|
|
|
+ if( (*cmp)(a,b)<=0 ){
|
|
|
+ NEXT(ptr) = a;
|
|
|
+ ptr = a;
|
|
|
+ a = NEXT(a);
|
|
|
+ }else{
|
|
|
+ NEXT(ptr) = b;
|
|
|
+ ptr = b;
|
|
|
+ b = NEXT(b);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ if( a ) NEXT(ptr) = a;
|
|
|
+ else NEXT(ptr) = b;
|
|
|
+ }
|
|
|
+ return head;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+** Inputs:
|
|
|
+** list: Pointer to a singly-linked list of structures.
|
|
|
+** next: Pointer to pointer to the second element of the list.
|
|
|
+** cmp: A comparison function.
|
|
|
+**
|
|
|
+** Return Value:
|
|
|
+** A pointer to the head of a sorted list containing the elements
|
|
|
+** originally in list.
|
|
|
+**
|
|
|
+** Side effects:
|
|
|
+** The "next" pointers for elements in list are changed.
|
|
|
+*/
|
|
|
+#define LISTSIZE 30
|
|
|
+static char *msort(
|
|
|
+ char *list,
|
|
|
+ char **next,
|
|
|
+ int (*cmp)(const char*,const char*)
|
|
|
+){
|
|
|
+ unsigned long offset;
|
|
|
+ char *ep;
|
|
|
+ char *set[LISTSIZE];
|
|
|
+ int i;
|
|
|
+ offset = (unsigned long)((char*)next - (char*)list);
|
|
|
+ for(i=0; i<LISTSIZE; i++) set[i] = 0;
|
|
|
+ while( list ){
|
|
|
+ ep = list;
|
|
|
+ list = NEXT(list);
|
|
|
+ NEXT(ep) = 0;
|
|
|
+ for(i=0; i<LISTSIZE-1 && set[i]!=0; i++){
|
|
|
+ ep = merge(ep,set[i],cmp,offset);
|
|
|
+ set[i] = 0;
|
|
|
+ }
|
|
|
+ set[i] = ep;
|
|
|
+ }
|
|
|
+ ep = 0;
|
|
|
+ for(i=0; i<LISTSIZE; i++) if( set[i] ) ep = merge(set[i],ep,cmp,offset);
|
|
|
+ return ep;
|
|
|
+}
|
|
|
+
|
|
|
+static char **g_argv;
|
|
|
+static struct s_options *op;
|
|
|
+static FILE *errstream;
|
|
|
+
|
|
|
+#define ISOPT(X) ((X)[0]=='-'||(X)[0]=='+'||strchr((X),'=')!=0)
|
|
|
+
|
|
|
+
|
|
|
+** Print the command line with a carrot pointing to the k-th character
|
|
|
+** of the n-th field.
|
|
|
+*/
|
|
|
+static void errline(int n, int k, FILE *err)
|
|
|
+{
|
|
|
+ int spcnt, i;
|
|
|
+ if( g_argv[0] ){
|
|
|
+ fprintf(err,"%s",g_argv[0]);
|
|
|
+ spcnt = lemonStrlen(g_argv[0]) + 1;
|
|
|
+ }else{
|
|
|
+ spcnt = 0;
|
|
|
+ }
|
|
|
+ for(i=1; i<n && g_argv[i]; i++){
|
|
|
+ fprintf(err," %s",g_argv[i]);
|
|
|
+ spcnt += lemonStrlen(g_argv[i])+1;
|
|
|
+ }
|
|
|
+ spcnt += k;
|
|
|
+ for(; g_argv[i]; i++) fprintf(err," %s",g_argv[i]);
|
|
|
+ if( spcnt<20 ){
|
|
|
+ fprintf(err,"\n%*s^-- here\n",spcnt,"");
|
|
|
+ }else{
|
|
|
+ fprintf(err,"\n%*shere --^\n",spcnt-7,"");
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+** Return the index of the N-th non-switch argument. Return -1
|
|
|
+** if N is out of range.
|
|
|
+*/
|
|
|
+static int argindex(int n)
|
|
|
+{
|
|
|
+ int i;
|
|
|
+ int dashdash = 0;
|
|
|
+ if( g_argv!=0 && *g_argv!=0 ){
|
|
|
+ for(i=1; g_argv[i]; i++){
|
|
|
+ if( dashdash || !ISOPT(g_argv[i]) ){
|
|
|
+ if( n==0 ) return i;
|
|
|
+ n--;
|
|
|
+ }
|
|
|
+ if( strcmp(g_argv[i],"--")==0 ) dashdash = 1;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ return -1;
|
|
|
+}
|
|
|
+
|
|
|
+static char emsg[] = "Command line syntax error: ";
|
|
|
+
|
|
|
+
|
|
|
+** Process a flag command line argument.
|
|
|
+*/
|
|
|
+static int handleflags(int i, FILE *err)
|
|
|
+{
|
|
|
+ int v;
|
|
|
+ int errcnt = 0;
|
|
|
+ int j;
|
|
|
+ for(j=0; op[j].label; j++){
|
|
|
+ if( strncmp(&g_argv[i][1],op[j].label,lemonStrlen(op[j].label))==0 ) break;
|
|
|
+ }
|
|
|
+ v = g_argv[i][0]=='-' ? 1 : 0;
|
|
|
+ if( op[j].label==0 ){
|
|
|
+ if( err ){
|
|
|
+ fprintf(err,"%sundefined option.\n",emsg);
|
|
|
+ errline(i,1,err);
|
|
|
+ }
|
|
|
+ errcnt++;
|
|
|
+ }else if( op[j].arg==0 ){
|
|
|
+
|
|
|
+ }else if( op[j].type==OPT_FLAG ){
|
|
|
+ *((int*)op[j].arg) = v;
|
|
|
+ }else if( op[j].type==OPT_FFLAG ){
|
|
|
+ (*(void(*)(int))(op[j].arg))(v);
|
|
|
+ }else if( op[j].type==OPT_FSTR ){
|
|
|
+ (*(void(*)(char *))(op[j].arg))(&g_argv[i][2]);
|
|
|
+ }else{
|
|
|
+ if( err ){
|
|
|
+ fprintf(err,"%smissing argument on switch.\n",emsg);
|
|
|
+ errline(i,1,err);
|
|
|
+ }
|
|
|
+ errcnt++;
|
|
|
+ }
|
|
|
+ return errcnt;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+** Process a command line switch which has an argument.
|
|
|
+*/
|
|
|
+static int handleswitch(int i, FILE *err)
|
|
|
+{
|
|
|
+ int lv = 0;
|
|
|
+ double dv = 0.0;
|
|
|
+ char *sv = 0, *end;
|
|
|
+ char *cp;
|
|
|
+ int j;
|
|
|
+ int errcnt = 0;
|
|
|
+ cp = strchr(g_argv[i],'=');
|
|
|
+ assert( cp!=0 );
|
|
|
+ *cp = 0;
|
|
|
+ for(j=0; op[j].label; j++){
|
|
|
+ if( strcmp(g_argv[i],op[j].label)==0 ) break;
|
|
|
+ }
|
|
|
+ *cp = '=';
|
|
|
+ if( op[j].label==0 ){
|
|
|
+ if( err ){
|
|
|
+ fprintf(err,"%sundefined option.\n",emsg);
|
|
|
+ errline(i,0,err);
|
|
|
+ }
|
|
|
+ errcnt++;
|
|
|
+ }else{
|
|
|
+ cp++;
|
|
|
+ switch( op[j].type ){
|
|
|
+ case OPT_FLAG:
|
|
|
+ case OPT_FFLAG:
|
|
|
+ if( err ){
|
|
|
+ fprintf(err,"%soption requires an argument.\n",emsg);
|
|
|
+ errline(i,0,err);
|
|
|
+ }
|
|
|
+ errcnt++;
|
|
|
+ break;
|
|
|
+ case OPT_DBL:
|
|
|
+ case OPT_FDBL:
|
|
|
+ dv = strtod(cp,&end);
|
|
|
+ if( *end ){
|
|
|
+ if( err ){
|
|
|
+ fprintf(err,
|
|
|
+ "%sillegal character in floating-point argument.\n",emsg);
|
|
|
+ errline(i,(int)((char*)end-(char*)g_argv[i]),err);
|
|
|
+ }
|
|
|
+ errcnt++;
|
|
|
+ }
|
|
|
+ break;
|
|
|
+ case OPT_INT:
|
|
|
+ case OPT_FINT:
|
|
|
+ lv = strtol(cp,&end,0);
|
|
|
+ if( *end ){
|
|
|
+ if( err ){
|
|
|
+ fprintf(err,"%sillegal character in integer argument.\n",emsg);
|
|
|
+ errline(i,(int)((char*)end-(char*)g_argv[i]),err);
|
|
|
+ }
|
|
|
+ errcnt++;
|
|
|
+ }
|
|
|
+ break;
|
|
|
+ case OPT_STR:
|
|
|
+ case OPT_FSTR:
|
|
|
+ sv = cp;
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ switch( op[j].type ){
|
|
|
+ case OPT_FLAG:
|
|
|
+ case OPT_FFLAG:
|
|
|
+ break;
|
|
|
+ case OPT_DBL:
|
|
|
+ *(double*)(op[j].arg) = dv;
|
|
|
+ break;
|
|
|
+ case OPT_FDBL:
|
|
|
+ (*(void(*)(double))(op[j].arg))(dv);
|
|
|
+ break;
|
|
|
+ case OPT_INT:
|
|
|
+ *(int*)(op[j].arg) = lv;
|
|
|
+ break;
|
|
|
+ case OPT_FINT:
|
|
|
+ (*(void(*)(int))(op[j].arg))((int)lv);
|
|
|
+ break;
|
|
|
+ case OPT_STR:
|
|
|
+ *(char**)(op[j].arg) = sv;
|
|
|
+ break;
|
|
|
+ case OPT_FSTR:
|
|
|
+ (*(void(*)(char *))(op[j].arg))(sv);
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ return errcnt;
|
|
|
+}
|
|
|
+
|
|
|
+int OptInit(char **a, struct s_options *o, FILE *err)
|
|
|
+{
|
|
|
+ int errcnt = 0;
|
|
|
+ g_argv = a;
|
|
|
+ op = o;
|
|
|
+ errstream = err;
|
|
|
+ if( g_argv && *g_argv && op ){
|
|
|
+ int i;
|
|
|
+ for(i=1; g_argv[i]; i++){
|
|
|
+ if( g_argv[i][0]=='+' || g_argv[i][0]=='-' ){
|
|
|
+ errcnt += handleflags(i,err);
|
|
|
+ }else if( strchr(g_argv[i],'=') ){
|
|
|
+ errcnt += handleswitch(i,err);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ if( errcnt>0 ){
|
|
|
+ fprintf(err,"Valid command line options for \"%s\" are:\n",*a);
|
|
|
+ OptPrint();
|
|
|
+ exit(1);
|
|
|
+ }
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+int OptNArgs(void){
|
|
|
+ int cnt = 0;
|
|
|
+ int dashdash = 0;
|
|
|
+ int i;
|
|
|
+ if( g_argv!=0 && g_argv[0]!=0 ){
|
|
|
+ for(i=1; g_argv[i]; i++){
|
|
|
+ if( dashdash || !ISOPT(g_argv[i]) ) cnt++;
|
|
|
+ if( strcmp(g_argv[i],"--")==0 ) dashdash = 1;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ return cnt;
|
|
|
+}
|
|
|
+
|
|
|
+char *OptArg(int n)
|
|
|
+{
|
|
|
+ int i;
|
|
|
+ i = argindex(n);
|
|
|
+ return i>=0 ? g_argv[i] : 0;
|
|
|
+}
|
|
|
+
|
|
|
+void OptErr(int n)
|
|
|
+{
|
|
|
+ int i;
|
|
|
+ i = argindex(n);
|
|
|
+ if( i>=0 ) errline(i,0,errstream);
|
|
|
+}
|
|
|
+
|
|
|
+void OptPrint(void){
|
|
|
+ int i;
|
|
|
+ int max, len;
|
|
|
+ max = 0;
|
|
|
+ for(i=0; op[i].label; i++){
|
|
|
+ len = lemonStrlen(op[i].label) + 1;
|
|
|
+ switch( op[i].type ){
|
|
|
+ case OPT_FLAG:
|
|
|
+ case OPT_FFLAG:
|
|
|
+ break;
|
|
|
+ case OPT_INT:
|
|
|
+ case OPT_FINT:
|
|
|
+ len += 9;
|
|
|
+ break;
|
|
|
+ case OPT_DBL:
|
|
|
+ case OPT_FDBL:
|
|
|
+ len += 6;
|
|
|
+ break;
|
|
|
+ case OPT_STR:
|
|
|
+ case OPT_FSTR:
|
|
|
+ len += 8;
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ if( len>max ) max = len;
|
|
|
+ }
|
|
|
+ for(i=0; op[i].label; i++){
|
|
|
+ switch( op[i].type ){
|
|
|
+ case OPT_FLAG:
|
|
|
+ case OPT_FFLAG:
|
|
|
+ fprintf(errstream," -%-*s %s\n",max,op[i].label,op[i].message);
|
|
|
+ break;
|
|
|
+ case OPT_INT:
|
|
|
+ case OPT_FINT:
|
|
|
+ fprintf(errstream," -%s<integer>%*s %s\n",op[i].label,
|
|
|
+ (int)(max-lemonStrlen(op[i].label)-9),"",op[i].message);
|
|
|
+ break;
|
|
|
+ case OPT_DBL:
|
|
|
+ case OPT_FDBL:
|
|
|
+ fprintf(errstream," -%s<real>%*s %s\n",op[i].label,
|
|
|
+ (int)(max-lemonStrlen(op[i].label)-6),"",op[i].message);
|
|
|
+ break;
|
|
|
+ case OPT_STR:
|
|
|
+ case OPT_FSTR:
|
|
|
+ fprintf(errstream," -%s<string>%*s %s\n",op[i].label,
|
|
|
+ (int)(max-lemonStrlen(op[i].label)-8),"",op[i].message);
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+** Input file parser for the LEMON parser generator.
|
|
|
+*/
|
|
|
+
|
|
|
+
|
|
|
+enum e_state {
|
|
|
+ INITIALIZE,
|
|
|
+ WAITING_FOR_DECL_OR_RULE,
|
|
|
+ WAITING_FOR_DECL_KEYWORD,
|
|
|
+ WAITING_FOR_DECL_ARG,
|
|
|
+ WAITING_FOR_PRECEDENCE_SYMBOL,
|
|
|
+ WAITING_FOR_ARROW,
|
|
|
+ IN_RHS,
|
|
|
+ LHS_ALIAS_1,
|
|
|
+ LHS_ALIAS_2,
|
|
|
+ LHS_ALIAS_3,
|
|
|
+ RHS_ALIAS_1,
|
|
|
+ RHS_ALIAS_2,
|
|
|
+ PRECEDENCE_MARK_1,
|
|
|
+ PRECEDENCE_MARK_2,
|
|
|
+ RESYNC_AFTER_RULE_ERROR,
|
|
|
+ RESYNC_AFTER_DECL_ERROR,
|
|
|
+ WAITING_FOR_DESTRUCTOR_SYMBOL,
|
|
|
+ WAITING_FOR_DATATYPE_SYMBOL,
|
|
|
+ WAITING_FOR_FALLBACK_ID,
|
|
|
+ WAITING_FOR_WILDCARD_ID,
|
|
|
+ WAITING_FOR_CLASS_ID,
|
|
|
+ WAITING_FOR_CLASS_TOKEN,
|
|
|
+ WAITING_FOR_TOKEN_NAME
|
|
|
+};
|
|
|
+struct pstate {
|
|
|
+ char *filename;
|
|
|
+ int tokenlineno;
|
|
|
+ int errorcnt;
|
|
|
+ char *tokenstart;
|
|
|
+ struct lemon *gp;
|
|
|
+ enum e_state state;
|
|
|
+ struct symbol *fallback;
|
|
|
+ struct symbol *tkclass;
|
|
|
+ struct symbol *lhs;
|
|
|
+ const char *lhsalias;
|
|
|
+ int nrhs;
|
|
|
+ struct symbol *rhs[MAXRHS];
|
|
|
+ const char *alias[MAXRHS];
|
|
|
+ struct rule *prevrule;
|
|
|
+ const char *declkeyword;
|
|
|
+ char **declargslot;
|
|
|
+ int insertLineMacro;
|
|
|
+ int *decllinenoslot;
|
|
|
+ enum e_assoc declassoc;
|
|
|
+ int preccounter;
|
|
|
+ struct rule *firstrule;
|
|
|
+ struct rule *lastrule;
|
|
|
+};
|
|
|
+
|
|
|
+
|
|
|
+static void parseonetoken(struct pstate *psp)
|
|
|
+{
|
|
|
+ const char *x;
|
|
|
+ x = Strsafe(psp->tokenstart);
|
|
|
+#if 0
|
|
|
+ printf("%s:%d: Token=[%s] state=%d\n",psp->filename,psp->tokenlineno,
|
|
|
+ x,psp->state);
|
|
|
+#endif
|
|
|
+ switch( psp->state ){
|
|
|
+ case INITIALIZE:
|
|
|
+ psp->prevrule = 0;
|
|
|
+ psp->preccounter = 0;
|
|
|
+ psp->firstrule = psp->lastrule = 0;
|
|
|
+ psp->gp->nrule = 0;
|
|
|
+
|
|
|
+ case WAITING_FOR_DECL_OR_RULE:
|
|
|
+ if( x[0]=='%' ){
|
|
|
+ psp->state = WAITING_FOR_DECL_KEYWORD;
|
|
|
+ }else if( ISLOWER(x[0]) ){
|
|
|
+ psp->lhs = Symbol_new(x);
|
|
|
+ psp->nrhs = 0;
|
|
|
+ psp->lhsalias = 0;
|
|
|
+ psp->state = WAITING_FOR_ARROW;
|
|
|
+ }else if( x[0]=='{' ){
|
|
|
+ if( psp->prevrule==0 ){
|
|
|
+ ErrorMsg(psp->filename,psp->tokenlineno,
|
|
|
+ "There is no prior rule upon which to attach the code "
|
|
|
+ "fragment which begins on this line.");
|
|
|
+ psp->errorcnt++;
|
|
|
+ }else if( psp->prevrule->code!=0 ){
|
|
|
+ ErrorMsg(psp->filename,psp->tokenlineno,
|
|
|
+ "Code fragment beginning on this line is not the first "
|
|
|
+ "to follow the previous rule.");
|
|
|
+ psp->errorcnt++;
|
|
|
+ }else if( strcmp(x, "{NEVER-REDUCE")==0 ){
|
|
|
+ psp->prevrule->neverReduce = 1;
|
|
|
+ }else{
|
|
|
+ psp->prevrule->line = psp->tokenlineno;
|
|
|
+ psp->prevrule->code = &x[1];
|
|
|
+ psp->prevrule->noCode = 0;
|
|
|
+ }
|
|
|
+ }else if( x[0]=='[' ){
|
|
|
+ psp->state = PRECEDENCE_MARK_1;
|
|
|
+ }else{
|
|
|
+ ErrorMsg(psp->filename,psp->tokenlineno,
|
|
|
+ "Token \"%s\" should be either \"%%\" or a nonterminal name.",
|
|
|
+ x);
|
|
|
+ psp->errorcnt++;
|
|
|
+ }
|
|
|
+ break;
|
|
|
+ case PRECEDENCE_MARK_1:
|
|
|
+ if( !ISUPPER(x[0]) ){
|
|
|
+ ErrorMsg(psp->filename,psp->tokenlineno,
|
|
|
+ "The precedence symbol must be a terminal.");
|
|
|
+ psp->errorcnt++;
|
|
|
+ }else if( psp->prevrule==0 ){
|
|
|
+ ErrorMsg(psp->filename,psp->tokenlineno,
|
|
|
+ "There is no prior rule to assign precedence \"[%s]\".",x);
|
|
|
+ psp->errorcnt++;
|
|
|
+ }else if( psp->prevrule->precsym!=0 ){
|
|
|
+ ErrorMsg(psp->filename,psp->tokenlineno,
|
|
|
+ "Precedence mark on this line is not the first "
|
|
|
+ "to follow the previous rule.");
|
|
|
+ psp->errorcnt++;
|
|
|
+ }else{
|
|
|
+ psp->prevrule->precsym = Symbol_new(x);
|
|
|
+ }
|
|
|
+ psp->state = PRECEDENCE_MARK_2;
|
|
|
+ break;
|
|
|
+ case PRECEDENCE_MARK_2:
|
|
|
+ if( x[0]!=']' ){
|
|
|
+ ErrorMsg(psp->filename,psp->tokenlineno,
|
|
|
+ "Missing \"]\" on precedence mark.");
|
|
|
+ psp->errorcnt++;
|
|
|
+ }
|
|
|
+ psp->state = WAITING_FOR_DECL_OR_RULE;
|
|
|
+ break;
|
|
|
+ case WAITING_FOR_ARROW:
|
|
|
+ if( x[0]==':' && x[1]==':' && x[2]=='=' ){
|
|
|
+ psp->state = IN_RHS;
|
|
|
+ }else if( x[0]=='(' ){
|
|
|
+ psp->state = LHS_ALIAS_1;
|
|
|
+ }else{
|
|
|
+ ErrorMsg(psp->filename,psp->tokenlineno,
|
|
|
+ "Expected to see a \":\" following the LHS symbol \"%s\".",
|
|
|
+ psp->lhs->name);
|
|
|
+ psp->errorcnt++;
|
|
|
+ psp->state = RESYNC_AFTER_RULE_ERROR;
|
|
|
+ }
|
|
|
+ break;
|
|
|
+ case LHS_ALIAS_1:
|
|
|
+ if( ISALPHA(x[0]) ){
|
|
|
+ psp->lhsalias = x;
|
|
|
+ psp->state = LHS_ALIAS_2;
|
|
|
+ }else{
|
|
|
+ ErrorMsg(psp->filename,psp->tokenlineno,
|
|
|
+ "\"%s\" is not a valid alias for the LHS \"%s\"\n",
|
|
|
+ x,psp->lhs->name);
|
|
|
+ psp->errorcnt++;
|
|
|
+ psp->state = RESYNC_AFTER_RULE_ERROR;
|
|
|
+ }
|
|
|
+ break;
|
|
|
+ case LHS_ALIAS_2:
|
|
|
+ if( x[0]==')' ){
|
|
|
+ psp->state = LHS_ALIAS_3;
|
|
|
+ }else{
|
|
|
+ ErrorMsg(psp->filename,psp->tokenlineno,
|
|
|
+ "Missing \")\" following LHS alias name \"%s\".",psp->lhsalias);
|
|
|
+ psp->errorcnt++;
|
|
|
+ psp->state = RESYNC_AFTER_RULE_ERROR;
|
|
|
+ }
|
|
|
+ break;
|
|
|
+ case LHS_ALIAS_3:
|
|
|
+ if( x[0]==':' && x[1]==':' && x[2]=='=' ){
|
|
|
+ psp->state = IN_RHS;
|
|
|
+ }else{
|
|
|
+ ErrorMsg(psp->filename,psp->tokenlineno,
|
|
|
+ "Missing \"->\" following: \"%s(%s)\".",
|
|
|
+ psp->lhs->name,psp->lhsalias);
|
|
|
+ psp->errorcnt++;
|
|
|
+ psp->state = RESYNC_AFTER_RULE_ERROR;
|
|
|
+ }
|
|
|
+ break;
|
|
|
+ case IN_RHS:
|
|
|
+ if( x[0]=='.' ){
|
|
|
+ struct rule *rp;
|
|
|
+ rp = (struct rule *)calloc( sizeof(struct rule) +
|
|
|
+ sizeof(struct symbol*)*psp->nrhs + sizeof(char*)*psp->nrhs, 1);
|
|
|
+ if( rp==0 ){
|
|
|
+ ErrorMsg(psp->filename,psp->tokenlineno,
|
|
|
+ "Can't allocate enough memory for this rule.");
|
|
|
+ psp->errorcnt++;
|
|
|
+ psp->prevrule = 0;
|
|
|
+ }else{
|
|
|
+ int i;
|
|
|
+ rp->ruleline = psp->tokenlineno;
|
|
|
+ rp->rhs = (struct symbol**)&rp[1];
|
|
|
+ rp->rhsalias = (const char**)&(rp->rhs[psp->nrhs]);
|
|
|
+ for(i=0; i<psp->nrhs; i++){
|
|
|
+ rp->rhs[i] = psp->rhs[i];
|
|
|
+ rp->rhsalias[i] = psp->alias[i];
|
|
|
+ if( rp->rhsalias[i]!=0 ){ rp->rhs[i]->bContent = 1; }
|
|
|
+ }
|
|
|
+ rp->lhs = psp->lhs;
|
|
|
+ rp->lhsalias = psp->lhsalias;
|
|
|
+ rp->nrhs = psp->nrhs;
|
|
|
+ rp->code = 0;
|
|
|
+ rp->noCode = 1;
|
|
|
+ rp->precsym = 0;
|
|
|
+ rp->index = psp->gp->nrule++;
|
|
|
+ rp->nextlhs = rp->lhs->rule;
|
|
|
+ rp->lhs->rule = rp;
|
|
|
+ rp->next = 0;
|
|
|
+ if( psp->firstrule==0 ){
|
|
|
+ psp->firstrule = psp->lastrule = rp;
|
|
|
+ }else{
|
|
|
+ psp->lastrule->next = rp;
|
|
|
+ psp->lastrule = rp;
|
|
|
+ }
|
|
|
+ psp->prevrule = rp;
|
|
|
+ }
|
|
|
+ psp->state = WAITING_FOR_DECL_OR_RULE;
|
|
|
+ }else if( ISALPHA(x[0]) ){
|
|
|
+ if( psp->nrhs>=MAXRHS ){
|
|
|
+ ErrorMsg(psp->filename,psp->tokenlineno,
|
|
|
+ "Too many symbols on RHS of rule beginning at \"%s\".",
|
|
|
+ x);
|
|
|
+ psp->errorcnt++;
|
|
|
+ psp->state = RESYNC_AFTER_RULE_ERROR;
|
|
|
+ }else{
|
|
|
+ psp->rhs[psp->nrhs] = Symbol_new(x);
|
|
|
+ psp->alias[psp->nrhs] = 0;
|
|
|
+ psp->nrhs++;
|
|
|
+ }
|
|
|
+ }else if( (x[0]=='|' || x[0]=='/') && psp->nrhs>0 && ISUPPER(x[1]) ){
|
|
|
+ struct symbol *msp = psp->rhs[psp->nrhs-1];
|
|
|
+ if( msp->type!=MULTITERMINAL ){
|
|
|
+ struct symbol *origsp = msp;
|
|
|
+ msp = (struct symbol *) calloc(1,sizeof(*msp));
|
|
|
+ memset(msp, 0, sizeof(*msp));
|
|
|
+ msp->type = MULTITERMINAL;
|
|
|
+ msp->nsubsym = 1;
|
|
|
+ msp->subsym = (struct symbol **) calloc(1,sizeof(struct symbol*));
|
|
|
+ msp->subsym[0] = origsp;
|
|
|
+ msp->name = origsp->name;
|
|
|
+ psp->rhs[psp->nrhs-1] = msp;
|
|
|
+ }
|
|
|
+ msp->nsubsym++;
|
|
|
+ msp->subsym = (struct symbol **) realloc(msp->subsym,
|
|
|
+ sizeof(struct symbol*)*msp->nsubsym);
|
|
|
+ msp->subsym[msp->nsubsym-1] = Symbol_new(&x[1]);
|
|
|
+ if( ISLOWER(x[1]) || ISLOWER(msp->subsym[0]->name[0]) ){
|
|
|
+ ErrorMsg(psp->filename,psp->tokenlineno,
|
|
|
+ "Cannot form a compound containing a non-terminal");
|
|
|
+ psp->errorcnt++;
|
|
|
+ }
|
|
|
+ }else if( x[0]=='(' && psp->nrhs>0 ){
|
|
|
+ psp->state = RHS_ALIAS_1;
|
|
|
+ }else{
|
|
|
+ ErrorMsg(psp->filename,psp->tokenlineno,
|
|
|
+ "Illegal character on RHS of rule: \"%s\".",x);
|
|
|
+ psp->errorcnt++;
|
|
|
+ psp->state = RESYNC_AFTER_RULE_ERROR;
|
|
|
+ }
|
|
|
+ break;
|
|
|
+ case RHS_ALIAS_1:
|
|
|
+ if( ISALPHA(x[0]) ){
|
|
|
+ psp->alias[psp->nrhs-1] = x;
|
|
|
+ psp->state = RHS_ALIAS_2;
|
|
|
+ }else{
|
|
|
+ ErrorMsg(psp->filename,psp->tokenlineno,
|
|
|
+ "\"%s\" is not a valid alias for the RHS symbol \"%s\"\n",
|
|
|
+ x,psp->rhs[psp->nrhs-1]->name);
|
|
|
+ psp->errorcnt++;
|
|
|
+ psp->state = RESYNC_AFTER_RULE_ERROR;
|
|
|
+ }
|
|
|
+ break;
|
|
|
+ case RHS_ALIAS_2:
|
|
|
+ if( x[0]==')' ){
|
|
|
+ psp->state = IN_RHS;
|
|
|
+ }else{
|
|
|
+ ErrorMsg(psp->filename,psp->tokenlineno,
|
|
|
+ "Missing \")\" following LHS alias name \"%s\".",psp->lhsalias);
|
|
|
+ psp->errorcnt++;
|
|
|
+ psp->state = RESYNC_AFTER_RULE_ERROR;
|
|
|
+ }
|
|
|
+ break;
|
|
|
+ case WAITING_FOR_DECL_KEYWORD:
|
|
|
+ if( ISALPHA(x[0]) ){
|
|
|
+ psp->declkeyword = x;
|
|
|
+ psp->declargslot = 0;
|
|
|
+ psp->decllinenoslot = 0;
|
|
|
+ psp->insertLineMacro = 1;
|
|
|
+ psp->state = WAITING_FOR_DECL_ARG;
|
|
|
+ if( strcmp(x,"name")==0 ){
|
|
|
+ psp->declargslot = &(psp->gp->name);
|
|
|
+ psp->insertLineMacro = 0;
|
|
|
+ }else if( strcmp(x,"include")==0 ){
|
|
|
+ psp->declargslot = &(psp->gp->include);
|
|
|
+ }else if( strcmp(x,"code")==0 ){
|
|
|
+ psp->declargslot = &(psp->gp->extracode);
|
|
|
+ }else if( strcmp(x,"token_destructor")==0 ){
|
|
|
+ psp->declargslot = &psp->gp->tokendest;
|
|
|
+ }else if( strcmp(x,"default_destructor")==0 ){
|
|
|
+ psp->declargslot = &psp->gp->vardest;
|
|
|
+ }else if( strcmp(x,"token_prefix")==0 ){
|
|
|
+ psp->declargslot = &psp->gp->tokenprefix;
|
|
|
+ psp->insertLineMacro = 0;
|
|
|
+ }else if( strcmp(x,"syntax_error")==0 ){
|
|
|
+ psp->declargslot = &(psp->gp->error);
|
|
|
+ }else if( strcmp(x,"parse_accept")==0 ){
|
|
|
+ psp->declargslot = &(psp->gp->accept);
|
|
|
+ }else if( strcmp(x,"parse_failure")==0 ){
|
|
|
+ psp->declargslot = &(psp->gp->failure);
|
|
|
+ }else if( strcmp(x,"stack_overflow")==0 ){
|
|
|
+ psp->declargslot = &(psp->gp->overflow);
|
|
|
+ }else if( strcmp(x,"extra_argument")==0 ){
|
|
|
+ psp->declargslot = &(psp->gp->arg);
|
|
|
+ psp->insertLineMacro = 0;
|
|
|
+ }else if( strcmp(x,"extra_context")==0 ){
|
|
|
+ psp->declargslot = &(psp->gp->ctx);
|
|
|
+ psp->insertLineMacro = 0;
|
|
|
+ }else if( strcmp(x,"token_type")==0 ){
|
|
|
+ psp->declargslot = &(psp->gp->tokentype);
|
|
|
+ psp->insertLineMacro = 0;
|
|
|
+ }else if( strcmp(x,"default_type")==0 ){
|
|
|
+ psp->declargslot = &(psp->gp->vartype);
|
|
|
+ psp->insertLineMacro = 0;
|
|
|
+ }else if( strcmp(x,"stack_size")==0 ){
|
|
|
+ psp->declargslot = &(psp->gp->stacksize);
|
|
|
+ psp->insertLineMacro = 0;
|
|
|
+ }else if( strcmp(x,"start_symbol")==0 ){
|
|
|
+ psp->declargslot = &(psp->gp->start);
|
|
|
+ psp->insertLineMacro = 0;
|
|
|
+ }else if( strcmp(x,"left")==0 ){
|
|
|
+ psp->preccounter++;
|
|
|
+ psp->declassoc = LEFT;
|
|
|
+ psp->state = WAITING_FOR_PRECEDENCE_SYMBOL;
|
|
|
+ }else if( strcmp(x,"right")==0 ){
|
|
|
+ psp->preccounter++;
|
|
|
+ psp->declassoc = RIGHT;
|
|
|
+ psp->state = WAITING_FOR_PRECEDENCE_SYMBOL;
|
|
|
+ }else if( strcmp(x,"nonassoc")==0 ){
|
|
|
+ psp->preccounter++;
|
|
|
+ psp->declassoc = NONE;
|
|
|
+ psp->state = WAITING_FOR_PRECEDENCE_SYMBOL;
|
|
|
+ }else if( strcmp(x,"destructor")==0 ){
|
|
|
+ psp->state = WAITING_FOR_DESTRUCTOR_SYMBOL;
|
|
|
+ }else if( strcmp(x,"type")==0 ){
|
|
|
+ psp->state = WAITING_FOR_DATATYPE_SYMBOL;
|
|
|
+ }else if( strcmp(x,"fallback")==0 ){
|
|
|
+ psp->fallback = 0;
|
|
|
+ psp->state = WAITING_FOR_FALLBACK_ID;
|
|
|
+ }else if( strcmp(x,"token")==0 ){
|
|
|
+ psp->state = WAITING_FOR_TOKEN_NAME;
|
|
|
+ }else if( strcmp(x,"wildcard")==0 ){
|
|
|
+ psp->state = WAITING_FOR_WILDCARD_ID;
|
|
|
+ }else if( strcmp(x,"token_class")==0 ){
|
|
|
+ psp->state = WAITING_FOR_CLASS_ID;
|
|
|
+ }else{
|
|
|
+ ErrorMsg(psp->filename,psp->tokenlineno,
|
|
|
+ "Unknown declaration keyword: \"%%%s\".",x);
|
|
|
+ psp->errorcnt++;
|
|
|
+ psp->state = RESYNC_AFTER_DECL_ERROR;
|
|
|
+ }
|
|
|
+ }else{
|
|
|
+ ErrorMsg(psp->filename,psp->tokenlineno,
|
|
|
+ "Illegal declaration keyword: \"%s\".",x);
|
|
|
+ psp->errorcnt++;
|
|
|
+ psp->state = RESYNC_AFTER_DECL_ERROR;
|
|
|
+ }
|
|
|
+ break;
|
|
|
+ case WAITING_FOR_DESTRUCTOR_SYMBOL:
|
|
|
+ if( !ISALPHA(x[0]) ){
|
|
|
+ ErrorMsg(psp->filename,psp->tokenlineno,
|
|
|
+ "Symbol name missing after %%destructor keyword");
|
|
|
+ psp->errorcnt++;
|
|
|
+ psp->state = RESYNC_AFTER_DECL_ERROR;
|
|
|
+ }else{
|
|
|
+ struct symbol *sp = Symbol_new(x);
|
|
|
+ psp->declargslot = &sp->destructor;
|
|
|
+ psp->decllinenoslot = &sp->destLineno;
|
|
|
+ psp->insertLineMacro = 1;
|
|
|
+ psp->state = WAITING_FOR_DECL_ARG;
|
|
|
+ }
|
|
|
+ break;
|
|
|
+ case WAITING_FOR_DATATYPE_SYMBOL:
|
|
|
+ if( !ISALPHA(x[0]) ){
|
|
|
+ ErrorMsg(psp->filename,psp->tokenlineno,
|
|
|
+ "Symbol name missing after %%type keyword");
|
|
|
+ psp->errorcnt++;
|
|
|
+ psp->state = RESYNC_AFTER_DECL_ERROR;
|
|
|
+ }else{
|
|
|
+ struct symbol *sp = Symbol_find(x);
|
|
|
+ if((sp) && (sp->datatype)){
|
|
|
+ ErrorMsg(psp->filename,psp->tokenlineno,
|
|
|
+ "Symbol %%type \"%s\" already defined", x);
|
|
|
+ psp->errorcnt++;
|
|
|
+ psp->state = RESYNC_AFTER_DECL_ERROR;
|
|
|
+ }else{
|
|
|
+ if (!sp){
|
|
|
+ sp = Symbol_new(x);
|
|
|
+ }
|
|
|
+ psp->declargslot = &sp->datatype;
|
|
|
+ psp->insertLineMacro = 0;
|
|
|
+ psp->state = WAITING_FOR_DECL_ARG;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ break;
|
|
|
+ case WAITING_FOR_PRECEDENCE_SYMBOL:
|
|
|
+ if( x[0]=='.' ){
|
|
|
+ psp->state = WAITING_FOR_DECL_OR_RULE;
|
|
|
+ }else if( ISUPPER(x[0]) ){
|
|
|
+ struct symbol *sp;
|
|
|
+ sp = Symbol_new(x);
|
|
|
+ if( sp->prec>=0 ){
|
|
|
+ ErrorMsg(psp->filename,psp->tokenlineno,
|
|
|
+ "Symbol \"%s\" has already be given a precedence.",x);
|
|
|
+ psp->errorcnt++;
|
|
|
+ }else{
|
|
|
+ sp->prec = psp->preccounter;
|
|
|
+ sp->assoc = psp->declassoc;
|
|
|
+ }
|
|
|
+ }else{
|
|
|
+ ErrorMsg(psp->filename,psp->tokenlineno,
|
|
|
+ "Can't assign a precedence to \"%s\".",x);
|
|
|
+ psp->errorcnt++;
|
|
|
+ }
|
|
|
+ break;
|
|
|
+ case WAITING_FOR_DECL_ARG:
|
|
|
+ if( x[0]=='{' || x[0]=='\"' || ISALNUM(x[0]) ){
|
|
|
+ const char *zOld, *zNew;
|
|
|
+ char *zBuf, *z;
|
|
|
+ int nOld, n, nLine = 0, nNew, nBack;
|
|
|
+ int addLineMacro;
|
|
|
+ char zLine[50];
|
|
|
+ zNew = x;
|
|
|
+ if( zNew[0]=='"' || zNew[0]=='{' ) zNew++;
|
|
|
+ nNew = lemonStrlen(zNew);
|
|
|
+ if( *psp->declargslot ){
|
|
|
+ zOld = *psp->declargslot;
|
|
|
+ }else{
|
|
|
+ zOld = "";
|
|
|
+ }
|
|
|
+ nOld = lemonStrlen(zOld);
|
|
|
+ n = nOld + nNew + 20;
|
|
|
+ addLineMacro = !psp->gp->nolinenosflag
|
|
|
+ && psp->insertLineMacro
|
|
|
+ && psp->tokenlineno>1
|
|
|
+ && (psp->decllinenoslot==0 || psp->decllinenoslot[0]!=0);
|
|
|
+ if( addLineMacro ){
|
|
|
+ for(z=psp->filename, nBack=0; *z; z++){
|
|
|
+ if( *z=='\\' ) nBack++;
|
|
|
+ }
|
|
|
+ lemon_sprintf(zLine, "#line %d ", psp->tokenlineno);
|
|
|
+ nLine = lemonStrlen(zLine);
|
|
|
+ n += nLine + lemonStrlen(psp->filename) + nBack;
|
|
|
+ }
|
|
|
+ *psp->declargslot = (char *) realloc(*psp->declargslot, n);
|
|
|
+ zBuf = *psp->declargslot + nOld;
|
|
|
+ if( addLineMacro ){
|
|
|
+ if( nOld && zBuf[-1]!='\n' ){
|
|
|
+ *(zBuf++) = '\n';
|
|
|
+ }
|
|
|
+ memcpy(zBuf, zLine, nLine);
|
|
|
+ zBuf += nLine;
|
|
|
+ *(zBuf++) = '"';
|
|
|
+ for(z=psp->filename; *z; z++){
|
|
|
+ if( *z=='\\' ){
|
|
|
+ *(zBuf++) = '\\';
|
|
|
+ }
|
|
|
+ *(zBuf++) = *z;
|
|
|
+ }
|
|
|
+ *(zBuf++) = '"';
|
|
|
+ *(zBuf++) = '\n';
|
|
|
+ }
|
|
|
+ if( psp->decllinenoslot && psp->decllinenoslot[0]==0 ){
|
|
|
+ psp->decllinenoslot[0] = psp->tokenlineno;
|
|
|
+ }
|
|
|
+ memcpy(zBuf, zNew, nNew);
|
|
|
+ zBuf += nNew;
|
|
|
+ *zBuf = 0;
|
|
|
+ psp->state = WAITING_FOR_DECL_OR_RULE;
|
|
|
+ }else{
|
|
|
+ ErrorMsg(psp->filename,psp->tokenlineno,
|
|
|
+ "Illegal argument to %%%s: %s",psp->declkeyword,x);
|
|
|
+ psp->errorcnt++;
|
|
|
+ psp->state = RESYNC_AFTER_DECL_ERROR;
|
|
|
+ }
|
|
|
+ break;
|
|
|
+ case WAITING_FOR_FALLBACK_ID:
|
|
|
+ if( x[0]=='.' ){
|
|
|
+ psp->state = WAITING_FOR_DECL_OR_RULE;
|
|
|
+ }else if( !ISUPPER(x[0]) ){
|
|
|
+ ErrorMsg(psp->filename, psp->tokenlineno,
|
|
|
+ "%%fallback argument \"%s\" should be a token", x);
|
|
|
+ psp->errorcnt++;
|
|
|
+ }else{
|
|
|
+ struct symbol *sp = Symbol_new(x);
|
|
|
+ if( psp->fallback==0 ){
|
|
|
+ psp->fallback = sp;
|
|
|
+ }else if( sp->fallback ){
|
|
|
+ ErrorMsg(psp->filename, psp->tokenlineno,
|
|
|
+ "More than one fallback assigned to token %s", x);
|
|
|
+ psp->errorcnt++;
|
|
|
+ }else{
|
|
|
+ sp->fallback = psp->fallback;
|
|
|
+ psp->gp->has_fallback = 1;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ break;
|
|
|
+ case WAITING_FOR_TOKEN_NAME:
|
|
|
+
|
|
|
+ ** in order to control their assigned integer number. The number for
|
|
|
+ ** each token is assigned when it is first seen. So by including
|
|
|
+ **
|
|
|
+ ** %token ONE TWO THREE.
|
|
|
+ **
|
|
|
+ ** early in the grammar file, that assigns small consecutive values
|
|
|
+ ** to each of the tokens ONE TWO and THREE.
|
|
|
+ */
|
|
|
+ if( x[0]=='.' ){
|
|
|
+ psp->state = WAITING_FOR_DECL_OR_RULE;
|
|
|
+ }else if( !ISUPPER(x[0]) ){
|
|
|
+ ErrorMsg(psp->filename, psp->tokenlineno,
|
|
|
+ "%%token argument \"%s\" should be a token", x);
|
|
|
+ psp->errorcnt++;
|
|
|
+ }else{
|
|
|
+ (void)Symbol_new(x);
|
|
|
+ }
|
|
|
+ break;
|
|
|
+ case WAITING_FOR_WILDCARD_ID:
|
|
|
+ if( x[0]=='.' ){
|
|
|
+ psp->state = WAITING_FOR_DECL_OR_RULE;
|
|
|
+ }else if( !ISUPPER(x[0]) ){
|
|
|
+ ErrorMsg(psp->filename, psp->tokenlineno,
|
|
|
+ "%%wildcard argument \"%s\" should be a token", x);
|
|
|
+ psp->errorcnt++;
|
|
|
+ }else{
|
|
|
+ struct symbol *sp = Symbol_new(x);
|
|
|
+ if( psp->gp->wildcard==0 ){
|
|
|
+ psp->gp->wildcard = sp;
|
|
|
+ }else{
|
|
|
+ ErrorMsg(psp->filename, psp->tokenlineno,
|
|
|
+ "Extra wildcard to token: %s", x);
|
|
|
+ psp->errorcnt++;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ break;
|
|
|
+ case WAITING_FOR_CLASS_ID:
|
|
|
+ if( !ISLOWER(x[0]) ){
|
|
|
+ ErrorMsg(psp->filename, psp->tokenlineno,
|
|
|
+ "%%token_class must be followed by an identifier: %s", x);
|
|
|
+ psp->errorcnt++;
|
|
|
+ psp->state = RESYNC_AFTER_DECL_ERROR;
|
|
|
+ }else if( Symbol_find(x) ){
|
|
|
+ ErrorMsg(psp->filename, psp->tokenlineno,
|
|
|
+ "Symbol \"%s\" already used", x);
|
|
|
+ psp->errorcnt++;
|
|
|
+ psp->state = RESYNC_AFTER_DECL_ERROR;
|
|
|
+ }else{
|
|
|
+ psp->tkclass = Symbol_new(x);
|
|
|
+ psp->tkclass->type = MULTITERMINAL;
|
|
|
+ psp->state = WAITING_FOR_CLASS_TOKEN;
|
|
|
+ }
|
|
|
+ break;
|
|
|
+ case WAITING_FOR_CLASS_TOKEN:
|
|
|
+ if( x[0]=='.' ){
|
|
|
+ psp->state = WAITING_FOR_DECL_OR_RULE;
|
|
|
+ }else if( ISUPPER(x[0]) || ((x[0]=='|' || x[0]=='/') && ISUPPER(x[1])) ){
|
|
|
+ struct symbol *msp = psp->tkclass;
|
|
|
+ msp->nsubsym++;
|
|
|
+ msp->subsym = (struct symbol **) realloc(msp->subsym,
|
|
|
+ sizeof(struct symbol*)*msp->nsubsym);
|
|
|
+ if( !ISUPPER(x[0]) ) x++;
|
|
|
+ msp->subsym[msp->nsubsym-1] = Symbol_new(x);
|
|
|
+ }else{
|
|
|
+ ErrorMsg(psp->filename, psp->tokenlineno,
|
|
|
+ "%%token_class argument \"%s\" should be a token", x);
|
|
|
+ psp->errorcnt++;
|
|
|
+ psp->state = RESYNC_AFTER_DECL_ERROR;
|
|
|
+ }
|
|
|
+ break;
|
|
|
+ case RESYNC_AFTER_RULE_ERROR:
|
|
|
+
|
|
|
+** break; */
|
|
|
+ case RESYNC_AFTER_DECL_ERROR:
|
|
|
+ if( x[0]=='.' ) psp->state = WAITING_FOR_DECL_OR_RULE;
|
|
|
+ if( x[0]=='%' ) psp->state = WAITING_FOR_DECL_KEYWORD;
|
|
|
+ break;
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+** Evaluate the text as a boolean expression. Return true or false.
|
|
|
+*/
|
|
|
+static int eval_preprocessor_boolean(char *z, int lineno){
|
|
|
+ int neg = 0;
|
|
|
+ int res = 0;
|
|
|
+ int okTerm = 1;
|
|
|
+ int i;
|
|
|
+ for(i=0; z[i]!=0; i++){
|
|
|
+ if( ISSPACE(z[i]) ) continue;
|
|
|
+ if( z[i]=='!' ){
|
|
|
+ if( !okTerm ) goto pp_syntax_error;
|
|
|
+ neg = !neg;
|
|
|
+ continue;
|
|
|
+ }
|
|
|
+ if( z[i]=='|' && z[i+1]=='|' ){
|
|
|
+ if( okTerm ) goto pp_syntax_error;
|
|
|
+ if( res ) return 1;
|
|
|
+ i++;
|
|
|
+ okTerm = 1;
|
|
|
+ continue;
|
|
|
+ }
|
|
|
+ if( z[i]=='&' && z[i+1]=='&' ){
|
|
|
+ if( okTerm ) goto pp_syntax_error;
|
|
|
+ if( !res ) return 0;
|
|
|
+ i++;
|
|
|
+ okTerm = 1;
|
|
|
+ continue;
|
|
|
+ }
|
|
|
+ if( z[i]=='(' ){
|
|
|
+ int k;
|
|
|
+ int n = 1;
|
|
|
+ if( !okTerm ) goto pp_syntax_error;
|
|
|
+ for(k=i+1; z[k]; k++){
|
|
|
+ if( z[k]==')' ){
|
|
|
+ n--;
|
|
|
+ if( n==0 ){
|
|
|
+ z[k] = 0;
|
|
|
+ res = eval_preprocessor_boolean(&z[i+1], -1);
|
|
|
+ z[k] = ')';
|
|
|
+ if( res<0 ){
|
|
|
+ i = i-res;
|
|
|
+ goto pp_syntax_error;
|
|
|
+ }
|
|
|
+ i = k;
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ }else if( z[k]=='(' ){
|
|
|
+ n++;
|
|
|
+ }else if( z[k]==0 ){
|
|
|
+ i = k;
|
|
|
+ goto pp_syntax_error;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ if( neg ){
|
|
|
+ res = !res;
|
|
|
+ neg = 0;
|
|
|
+ }
|
|
|
+ okTerm = 0;
|
|
|
+ continue;
|
|
|
+ }
|
|
|
+ if( ISALPHA(z[i]) ){
|
|
|
+ int j, k, n;
|
|
|
+ if( !okTerm ) goto pp_syntax_error;
|
|
|
+ for(k=i+1; ISALNUM(z[k]) || z[k]=='_'; k++){}
|
|
|
+ n = k - i;
|
|
|
+ res = 0;
|
|
|
+ for(j=0; j<nDefine; j++){
|
|
|
+ if( strncmp(azDefine[j],&z[i],n)==0 && azDefine[j][n]==0 ){
|
|
|
+ res = 1;
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ i = k-1;
|
|
|
+ if( neg ){
|
|
|
+ res = !res;
|
|
|
+ neg = 0;
|
|
|
+ }
|
|
|
+ okTerm = 0;
|
|
|
+ continue;
|
|
|
+ }
|
|
|
+ goto pp_syntax_error;
|
|
|
+ }
|
|
|
+ return res;
|
|
|
+
|
|
|
+pp_syntax_error:
|
|
|
+ if( lineno>0 ){
|
|
|
+ fprintf(stderr, "%%if syntax error on line %d.\n", lineno);
|
|
|
+ fprintf(stderr, " %.*s <-- syntax error here\n", i+1, z);
|
|
|
+ exit(1);
|
|
|
+ }else{
|
|
|
+ return -(i+1);
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+** azDefine[0] through azDefine[nDefine-1] contains the names of all defined
|
|
|
+** macros. This routine looks for "%ifdef" and "%ifndef" and "%endif" and
|
|
|
+** comments them out. Text in between is also commented out as appropriate.
|
|
|
+*/
|
|
|
+static void preprocess_input(char *z){
|
|
|
+ int i, j, k;
|
|
|
+ int exclude = 0;
|
|
|
+ int start = 0;
|
|
|
+ int lineno = 1;
|
|
|
+ int start_lineno = 1;
|
|
|
+ for(i=0; z[i]; i++){
|
|
|
+ if( z[i]=='\n' ) lineno++;
|
|
|
+ if( z[i]!='%' || (i>0 && z[i-1]!='\n') ) continue;
|
|
|
+ if( strncmp(&z[i],"%endif",6)==0 && ISSPACE(z[i+6]) ){
|
|
|
+ if( exclude ){
|
|
|
+ exclude--;
|
|
|
+ if( exclude==0 ){
|
|
|
+ for(j=start; j<i; j++) if( z[j]!='\n' ) z[j] = ' ';
|
|
|
+ }
|
|
|
+ }
|
|
|
+ for(j=i; z[j] && z[j]!='\n'; j++) z[j] = ' ';
|
|
|
+ }else if( strncmp(&z[i],"%else",5)==0 && ISSPACE(z[i+5]) ){
|
|
|
+ if( exclude==1){
|
|
|
+ exclude = 0;
|
|
|
+ for(j=start; j<i; j++) if( z[j]!='\n' ) z[j] = ' ';
|
|
|
+ }else if( exclude==0 ){
|
|
|
+ exclude = 1;
|
|
|
+ start = i;
|
|
|
+ start_lineno = lineno;
|
|
|
+ }
|
|
|
+ for(j=i; z[j] && z[j]!='\n'; j++) z[j] = ' ';
|
|
|
+ }else if( strncmp(&z[i],"%ifdef ",7)==0
|
|
|
+ || strncmp(&z[i],"%if ",4)==0
|
|
|
+ || strncmp(&z[i],"%ifndef ",8)==0 ){
|
|
|
+ if( exclude ){
|
|
|
+ exclude++;
|
|
|
+ }else{
|
|
|
+ int isNot;
|
|
|
+ int iBool;
|
|
|
+ for(j=i; z[j] && !ISSPACE(z[j]); j++){}
|
|
|
+ iBool = j;
|
|
|
+ isNot = (j==i+7);
|
|
|
+ while( z[j] && z[j]!='\n' ){ j++; }
|
|
|
+ k = z[j];
|
|
|
+ z[j] = 0;
|
|
|
+ exclude = eval_preprocessor_boolean(&z[iBool], lineno);
|
|
|
+ z[j] = k;
|
|
|
+ if( !isNot ) exclude = !exclude;
|
|
|
+ if( exclude ){
|
|
|
+ start = i;
|
|
|
+ start_lineno = lineno;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ for(j=i; z[j] && z[j]!='\n'; j++) z[j] = ' ';
|
|
|
+ }
|
|
|
+ }
|
|
|
+ if( exclude ){
|
|
|
+ fprintf(stderr,"unterminated %%ifdef starting on line %d\n", start_lineno);
|
|
|
+ exit(1);
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+** in the entire input file (all at once) then tokenizes it. Each
|
|
|
+** token is passed to the function "parseonetoken" which builds all
|
|
|
+** the appropriate data structures in the global state vector "gp".
|
|
|
+*/
|
|
|
+void Parse(struct lemon *gp)
|
|
|
+{
|
|
|
+ struct pstate ps;
|
|
|
+ FILE *fp;
|
|
|
+ char *filebuf;
|
|
|
+ unsigned int filesize;
|
|
|
+ int lineno;
|
|
|
+ int c;
|
|
|
+ char *cp, *nextcp;
|
|
|
+ int startline = 0;
|
|
|
+
|
|
|
+ memset(&ps, '\0', sizeof(ps));
|
|
|
+ ps.gp = gp;
|
|
|
+ ps.filename = gp->filename;
|
|
|
+ ps.errorcnt = 0;
|
|
|
+ ps.state = INITIALIZE;
|
|
|
+
|
|
|
+
|
|
|
+ fp = fopen(ps.filename,"rb");
|
|
|
+ if( fp==0 ){
|
|
|
+ ErrorMsg(ps.filename,0,"Can't open this file for reading.");
|
|
|
+ gp->errorcnt++;
|
|
|
+ return;
|
|
|
+ }
|
|
|
+ fseek(fp,0,2);
|
|
|
+ filesize = ftell(fp);
|
|
|
+ rewind(fp);
|
|
|
+ filebuf = (char *)malloc( filesize+1 );
|
|
|
+ if( filesize>100000000 || filebuf==0 ){
|
|
|
+ ErrorMsg(ps.filename,0,"Input file too large.");
|
|
|
+ free(filebuf);
|
|
|
+ gp->errorcnt++;
|
|
|
+ fclose(fp);
|
|
|
+ return;
|
|
|
+ }
|
|
|
+ if( fread(filebuf,1,filesize,fp)!=filesize ){
|
|
|
+ ErrorMsg(ps.filename,0,"Can't read in all %d bytes of this file.",
|
|
|
+ filesize);
|
|
|
+ free(filebuf);
|
|
|
+ gp->errorcnt++;
|
|
|
+ fclose(fp);
|
|
|
+ return;
|
|
|
+ }
|
|
|
+ fclose(fp);
|
|
|
+ filebuf[filesize] = 0;
|
|
|
+
|
|
|
+
|
|
|
+ preprocess_input(filebuf);
|
|
|
+ if( gp->printPreprocessed ){
|
|
|
+ printf("%s\n", filebuf);
|
|
|
+ return;
|
|
|
+ }
|
|
|
+
|
|
|
+
|
|
|
+ lineno = 1;
|
|
|
+ for(cp=filebuf; (c= *cp)!=0; ){
|
|
|
+ if( c=='\n' ) lineno++;
|
|
|
+ if( ISSPACE(c) ){ cp++; continue; }
|
|
|
+ if( c=='/' && cp[1]=='/' ){
|
|
|
+ cp+=2;
|
|
|
+ while( (c= *cp)!=0 && c!='\n' ) cp++;
|
|
|
+ continue;
|
|
|
+ }
|
|
|
+ if( c=='/' && cp[1]=='*' ){
|
|
|
+ cp+=2;
|
|
|
+ if( (*cp)=='/' ) cp++;
|
|
|
+ while( (c= *cp)!=0 && (c!='/' || cp[-1]!='*') ){
|
|
|
+ if( c=='\n' ) lineno++;
|
|
|
+ cp++;
|
|
|
+ }
|
|
|
+ if( c ) cp++;
|
|
|
+ continue;
|
|
|
+ }
|
|
|
+ ps.tokenstart = cp;
|
|
|
+ ps.tokenlineno = lineno;
|
|
|
+ if( c=='\"' ){
|
|
|
+ cp++;
|
|
|
+ while( (c= *cp)!=0 && c!='\"' ){
|
|
|
+ if( c=='\n' ) lineno++;
|
|
|
+ cp++;
|
|
|
+ }
|
|
|
+ if( c==0 ){
|
|
|
+ ErrorMsg(ps.filename,startline,
|
|
|
+ "String starting on this line is not terminated before "
|
|
|
+ "the end of the file.");
|
|
|
+ ps.errorcnt++;
|
|
|
+ nextcp = cp;
|
|
|
+ }else{
|
|
|
+ nextcp = cp+1;
|
|
|
+ }
|
|
|
+ }else if( c=='{' ){
|
|
|
+ int level;
|
|
|
+ cp++;
|
|
|
+ for(level=1; (c= *cp)!=0 && (level>1 || c!='}'); cp++){
|
|
|
+ if( c=='\n' ) lineno++;
|
|
|
+ else if( c=='{' ) level++;
|
|
|
+ else if( c=='}' ) level--;
|
|
|
+ else if( c=='/' && cp[1]=='*' ){
|
|
|
+ int prevc;
|
|
|
+ cp = &cp[2];
|
|
|
+ prevc = 0;
|
|
|
+ while( (c= *cp)!=0 && (c!='/' || prevc!='*') ){
|
|
|
+ if( c=='\n' ) lineno++;
|
|
|
+ prevc = c;
|
|
|
+ cp++;
|
|
|
+ }
|
|
|
+ }else if( c=='/' && cp[1]=='/' ){
|
|
|
+ cp = &cp[2];
|
|
|
+ while( (c= *cp)!=0 && c!='\n' ) cp++;
|
|
|
+ if( c ) lineno++;
|
|
|
+ }else if( c=='\'' || c=='\"' ){
|
|
|
+ int startchar, prevc;
|
|
|
+ startchar = c;
|
|
|
+ prevc = 0;
|
|
|
+ for(cp++; (c= *cp)!=0 && (c!=startchar || prevc=='\\'); cp++){
|
|
|
+ if( c=='\n' ) lineno++;
|
|
|
+ if( prevc=='\\' ) prevc = 0;
|
|
|
+ else prevc = c;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ if( c==0 ){
|
|
|
+ ErrorMsg(ps.filename,ps.tokenlineno,
|
|
|
+ "C code starting on this line is not terminated before "
|
|
|
+ "the end of the file.");
|
|
|
+ ps.errorcnt++;
|
|
|
+ nextcp = cp;
|
|
|
+ }else{
|
|
|
+ nextcp = cp+1;
|
|
|
+ }
|
|
|
+ }else if( ISALNUM(c) ){
|
|
|
+ while( (c= *cp)!=0 && (ISALNUM(c) || c=='_') ) cp++;
|
|
|
+ nextcp = cp;
|
|
|
+ }else if( c==':' && cp[1]==':' && cp[2]=='=' ){
|
|
|
+ cp += 3;
|
|
|
+ nextcp = cp;
|
|
|
+ }else if( (c=='/' || c=='|') && ISALPHA(cp[1]) ){
|
|
|
+ cp += 2;
|
|
|
+ while( (c = *cp)!=0 && (ISALNUM(c) || c=='_') ) cp++;
|
|
|
+ nextcp = cp;
|
|
|
+ }else{
|
|
|
+ cp++;
|
|
|
+ nextcp = cp;
|
|
|
+ }
|
|
|
+ c = *cp;
|
|
|
+ *cp = 0;
|
|
|
+ parseonetoken(&ps);
|
|
|
+ *cp = (char)c;
|
|
|
+ cp = nextcp;
|
|
|
+ }
|
|
|
+ free(filebuf);
|
|
|
+ gp->rule = ps.firstrule;
|
|
|
+ gp->errorcnt = ps.errorcnt;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+** Routines processing configuration follow-set propagation links
|
|
|
+** in the LEMON parser generator.
|
|
|
+*/
|
|
|
+static struct plink *plink_freelist = 0;
|
|
|
+
|
|
|
+
|
|
|
+struct plink *Plink_new(void){
|
|
|
+ struct plink *newlink;
|
|
|
+
|
|
|
+ if( plink_freelist==0 ){
|
|
|
+ int i;
|
|
|
+ int amt = 100;
|
|
|
+ plink_freelist = (struct plink *)calloc( amt, sizeof(struct plink) );
|
|
|
+ if( plink_freelist==0 ){
|
|
|
+ fprintf(stderr,
|
|
|
+ "Unable to allocate memory for a new follow-set propagation link.\n");
|
|
|
+ exit(1);
|
|
|
+ }
|
|
|
+ for(i=0; i<amt-1; i++) plink_freelist[i].next = &plink_freelist[i+1];
|
|
|
+ plink_freelist[amt-1].next = 0;
|
|
|
+ }
|
|
|
+ newlink = plink_freelist;
|
|
|
+ plink_freelist = plink_freelist->next;
|
|
|
+ return newlink;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+void Plink_add(struct plink **plpp, struct config *cfp)
|
|
|
+{
|
|
|
+ struct plink *newlink;
|
|
|
+ newlink = Plink_new();
|
|
|
+ newlink->next = *plpp;
|
|
|
+ *plpp = newlink;
|
|
|
+ newlink->cfp = cfp;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+void Plink_copy(struct plink **to, struct plink *from)
|
|
|
+{
|
|
|
+ struct plink *nextpl;
|
|
|
+ while( from ){
|
|
|
+ nextpl = from->next;
|
|
|
+ from->next = *to;
|
|
|
+ *to = from;
|
|
|
+ from = nextpl;
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+void Plink_delete(struct plink *plp)
|
|
|
+{
|
|
|
+ struct plink *nextpl;
|
|
|
+
|
|
|
+ while( plp ){
|
|
|
+ nextpl = plp->next;
|
|
|
+ plp->next = plink_freelist;
|
|
|
+ plink_freelist = plp;
|
|
|
+ plp = nextpl;
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+** Procedures for generating reports and tables in the LEMON parser generator.
|
|
|
+*/
|
|
|
+
|
|
|
+
|
|
|
+** name comes from malloc() and must be freed by the calling
|
|
|
+** function.
|
|
|
+*/
|
|
|
+PRIVATE char *file_makename(struct lemon *lemp, const char *suffix)
|
|
|
+{
|
|
|
+ char *name;
|
|
|
+ char *cp;
|
|
|
+ char *filename = lemp->filename;
|
|
|
+ int sz;
|
|
|
+
|
|
|
+ if( outputDir ){
|
|
|
+ cp = strrchr(filename, '/');
|
|
|
+ if( cp ) filename = cp + 1;
|
|
|
+ }
|
|
|
+ sz = lemonStrlen(filename);
|
|
|
+ sz += lemonStrlen(suffix);
|
|
|
+ if( outputDir ) sz += lemonStrlen(outputDir) + 1;
|
|
|
+ sz += 5;
|
|
|
+ name = (char*)malloc( sz );
|
|
|
+ if( name==0 ){
|
|
|
+ fprintf(stderr,"Can't allocate space for a filename.\n");
|
|
|
+ exit(1);
|
|
|
+ }
|
|
|
+ name[0] = 0;
|
|
|
+ if( outputDir ){
|
|
|
+ lemon_strcpy(name, outputDir);
|
|
|
+ lemon_strcat(name, "/");
|
|
|
+ }
|
|
|
+ lemon_strcat(name,filename);
|
|
|
+ cp = strrchr(name,'.');
|
|
|
+ if( cp ) *cp = 0;
|
|
|
+ lemon_strcat(name,suffix);
|
|
|
+ return name;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+** but with a different (specified) suffix, and return a pointer
|
|
|
+** to the stream */
|
|
|
+PRIVATE FILE *file_open(
|
|
|
+ struct lemon *lemp,
|
|
|
+ const char *suffix,
|
|
|
+ const char *mode
|
|
|
+){
|
|
|
+ FILE *fp;
|
|
|
+
|
|
|
+ if( lemp->outname ) free(lemp->outname);
|
|
|
+ lemp->outname = file_makename(lemp, suffix);
|
|
|
+ fp = fopen(lemp->outname,mode);
|
|
|
+ if( fp==0 && *mode=='w' ){
|
|
|
+ fprintf(stderr,"Can't open file \"%s\".\n",lemp->outname);
|
|
|
+ lemp->errorcnt++;
|
|
|
+ return 0;
|
|
|
+ }
|
|
|
+ return fp;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+*/
|
|
|
+void rule_print(FILE *out, struct rule *rp){
|
|
|
+ int i, j;
|
|
|
+ fprintf(out, "%s",rp->lhs->name);
|
|
|
+
|
|
|
+ fprintf(out," ::=");
|
|
|
+ for(i=0; i<rp->nrhs; i++){
|
|
|
+ struct symbol *sp = rp->rhs[i];
|
|
|
+ if( sp->type==MULTITERMINAL ){
|
|
|
+ fprintf(out," %s", sp->subsym[0]->name);
|
|
|
+ for(j=1; j<sp->nsubsym; j++){
|
|
|
+ fprintf(out,"|%s", sp->subsym[j]->name);
|
|
|
+ }
|
|
|
+ }else{
|
|
|
+ fprintf(out," %s", sp->name);
|
|
|
+ }
|
|
|
+
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+** on rules */
|
|
|
+void Reprint(struct lemon *lemp)
|
|
|
+{
|
|
|
+ struct rule *rp;
|
|
|
+ struct symbol *sp;
|
|
|
+ int i, j, maxlen, len, ncolumns, skip;
|
|
|
+ printf("// Reprint of input file \"%s\".\n// Symbols:\n",lemp->filename);
|
|
|
+ maxlen = 10;
|
|
|
+ for(i=0; i<lemp->nsymbol; i++){
|
|
|
+ sp = lemp->symbols[i];
|
|
|
+ len = lemonStrlen(sp->name);
|
|
|
+ if( len>maxlen ) maxlen = len;
|
|
|
+ }
|
|
|
+ ncolumns = 76/(maxlen+5);
|
|
|
+ if( ncolumns<1 ) ncolumns = 1;
|
|
|
+ skip = (lemp->nsymbol + ncolumns - 1)/ncolumns;
|
|
|
+ for(i=0; i<skip; i++){
|
|
|
+ printf("//");
|
|
|
+ for(j=i; j<lemp->nsymbol; j+=skip){
|
|
|
+ sp = lemp->symbols[j];
|
|
|
+ assert( sp->index==j );
|
|
|
+ printf(" %3d %-*.*s",j,maxlen,maxlen,sp->name);
|
|
|
+ }
|
|
|
+ printf("\n");
|
|
|
+ }
|
|
|
+ for(rp=lemp->rule; rp; rp=rp->next){
|
|
|
+ rule_print(stdout, rp);
|
|
|
+ printf(".");
|
|
|
+ if( rp->precsym ) printf(" [%s]",rp->precsym->name);
|
|
|
+
|
|
|
+ printf("\n");
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+*/
|
|
|
+void RulePrint(FILE *fp, struct rule *rp, int iCursor){
|
|
|
+ struct symbol *sp;
|
|
|
+ int i, j;
|
|
|
+ fprintf(fp,"%s ::=",rp->lhs->name);
|
|
|
+ for(i=0; i<=rp->nrhs; i++){
|
|
|
+ if( i==iCursor ) fprintf(fp," *");
|
|
|
+ if( i==rp->nrhs ) break;
|
|
|
+ sp = rp->rhs[i];
|
|
|
+ if( sp->type==MULTITERMINAL ){
|
|
|
+ fprintf(fp," %s", sp->subsym[0]->name);
|
|
|
+ for(j=1; j<sp->nsubsym; j++){
|
|
|
+ fprintf(fp,"|%s",sp->subsym[j]->name);
|
|
|
+ }
|
|
|
+ }else{
|
|
|
+ fprintf(fp," %s", sp->name);
|
|
|
+ }
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+*/
|
|
|
+void ConfigPrint(FILE *fp, struct config *cfp){
|
|
|
+ RulePrint(fp, cfp->rp, cfp->dot);
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+#if 0
|
|
|
+
|
|
|
+PRIVATE void SetPrint(out,set,lemp)
|
|
|
+FILE *out;
|
|
|
+char *set;
|
|
|
+struct lemon *lemp;
|
|
|
+{
|
|
|
+ int i;
|
|
|
+ char *spacer;
|
|
|
+ spacer = "";
|
|
|
+ fprintf(out,"%12s[","");
|
|
|
+ for(i=0; i<lemp->nterminal; i++){
|
|
|
+ if( SetFind(set,i) ){
|
|
|
+ fprintf(out,"%s%s",spacer,lemp->symbols[i]->name);
|
|
|
+ spacer = " ";
|
|
|
+ }
|
|
|
+ }
|
|
|
+ fprintf(out,"]\n");
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+PRIVATE void PlinkPrint(out,plp,tag)
|
|
|
+FILE *out;
|
|
|
+struct plink *plp;
|
|
|
+char *tag;
|
|
|
+{
|
|
|
+ while( plp ){
|
|
|
+ fprintf(out,"%12s%s (state %2d) ","",tag,plp->cfp->stp->statenum);
|
|
|
+ ConfigPrint(out,plp->cfp);
|
|
|
+ fprintf(out,"\n");
|
|
|
+ plp = plp->next;
|
|
|
+ }
|
|
|
+}
|
|
|
+#endif
|
|
|
+
|
|
|
+
|
|
|
+** nothing was actually printed.
|
|
|
+*/
|
|
|
+int PrintAction(
|
|
|
+ struct action *ap, /* The action to print */
|
|
|
+ FILE *fp,
|
|
|
+ int indent
|
|
|
+){
|
|
|
+ int result = 1;
|
|
|
+ switch( ap->type ){
|
|
|
+ case SHIFT: {
|
|
|
+ struct state *stp = ap->x.stp;
|
|
|
+ fprintf(fp,"%*s shift %-7d",indent,ap->sp->name,stp->statenum);
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ case REDUCE: {
|
|
|
+ struct rule *rp = ap->x.rp;
|
|
|
+ fprintf(fp,"%*s reduce %-7d",indent,ap->sp->name,rp->iRule);
|
|
|
+ RulePrint(fp, rp, -1);
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ case SHIFTREDUCE: {
|
|
|
+ struct rule *rp = ap->x.rp;
|
|
|
+ fprintf(fp,"%*s shift-reduce %-7d",indent,ap->sp->name,rp->iRule);
|
|
|
+ RulePrint(fp, rp, -1);
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ case ACCEPT:
|
|
|
+ fprintf(fp,"%*s accept",indent,ap->sp->name);
|
|
|
+ break;
|
|
|
+ case ERROR:
|
|
|
+ fprintf(fp,"%*s error",indent,ap->sp->name);
|
|
|
+ break;
|
|
|
+ case SRCONFLICT:
|
|
|
+ case RRCONFLICT:
|
|
|
+ fprintf(fp,"%*s reduce %-7d ** Parsing conflict **",
|
|
|
+ indent,ap->sp->name,ap->x.rp->iRule);
|
|
|
+ break;
|
|
|
+ case SSCONFLICT:
|
|
|
+ fprintf(fp,"%*s shift %-7d ** Parsing conflict **",
|
|
|
+ indent,ap->sp->name,ap->x.stp->statenum);
|
|
|
+ break;
|
|
|
+ case SH_RESOLVED:
|
|
|
+ if( showPrecedenceConflict ){
|
|
|
+ fprintf(fp,"%*s shift %-7d -- dropped by precedence",
|
|
|
+ indent,ap->sp->name,ap->x.stp->statenum);
|
|
|
+ }else{
|
|
|
+ result = 0;
|
|
|
+ }
|
|
|
+ break;
|
|
|
+ case RD_RESOLVED:
|
|
|
+ if( showPrecedenceConflict ){
|
|
|
+ fprintf(fp,"%*s reduce %-7d -- dropped by precedence",
|
|
|
+ indent,ap->sp->name,ap->x.rp->iRule);
|
|
|
+ }else{
|
|
|
+ result = 0;
|
|
|
+ }
|
|
|
+ break;
|
|
|
+ case NOT_USED:
|
|
|
+ result = 0;
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ if( result && ap->spOpt ){
|
|
|
+ fprintf(fp," /* because %s==%s */", ap->sp->name, ap->spOpt->name);
|
|
|
+ }
|
|
|
+ return result;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+void ReportOutput(struct lemon *lemp)
|
|
|
+{
|
|
|
+ int i, n;
|
|
|
+ struct state *stp;
|
|
|
+ struct config *cfp;
|
|
|
+ struct action *ap;
|
|
|
+ struct rule *rp;
|
|
|
+ FILE *fp;
|
|
|
+
|
|
|
+ fp = file_open(lemp,".out","wb");
|
|
|
+ if( fp==0 ) return;
|
|
|
+ for(i=0; i<lemp->nxstate; i++){
|
|
|
+ stp = lemp->sorted[i];
|
|
|
+ fprintf(fp,"State %d:\n",stp->statenum);
|
|
|
+ if( lemp->basisflag ) cfp=stp->bp;
|
|
|
+ else cfp=stp->cfp;
|
|
|
+ while( cfp ){
|
|
|
+ char buf[20];
|
|
|
+ if( cfp->dot==cfp->rp->nrhs ){
|
|
|
+ lemon_sprintf(buf,"(%d)",cfp->rp->iRule);
|
|
|
+ fprintf(fp," %5s ",buf);
|
|
|
+ }else{
|
|
|
+ fprintf(fp," ");
|
|
|
+ }
|
|
|
+ ConfigPrint(fp,cfp);
|
|
|
+ fprintf(fp,"\n");
|
|
|
+#if 0
|
|
|
+ SetPrint(fp,cfp->fws,lemp);
|
|
|
+ PlinkPrint(fp,cfp->fplp,"To ");
|
|
|
+ PlinkPrint(fp,cfp->bplp,"From");
|
|
|
+#endif
|
|
|
+ if( lemp->basisflag ) cfp=cfp->bp;
|
|
|
+ else cfp=cfp->next;
|
|
|
+ }
|
|
|
+ fprintf(fp,"\n");
|
|
|
+ for(ap=stp->ap; ap; ap=ap->next){
|
|
|
+ if( PrintAction(ap,fp,30) ) fprintf(fp,"\n");
|
|
|
+ }
|
|
|
+ fprintf(fp,"\n");
|
|
|
+ }
|
|
|
+ fprintf(fp, "----------------------------------------------------\n");
|
|
|
+ fprintf(fp, "Symbols:\n");
|
|
|
+ fprintf(fp, "The first-set of non-terminals is shown after the name.\n\n");
|
|
|
+ for(i=0; i<lemp->nsymbol; i++){
|
|
|
+ int j;
|
|
|
+ struct symbol *sp;
|
|
|
+
|
|
|
+ sp = lemp->symbols[i];
|
|
|
+ fprintf(fp, " %3d: %s", i, sp->name);
|
|
|
+ if( sp->type==NONTERMINAL ){
|
|
|
+ fprintf(fp, ":");
|
|
|
+ if( sp->lambda ){
|
|
|
+ fprintf(fp, " <lambda>");
|
|
|
+ }
|
|
|
+ for(j=0; j<lemp->nterminal; j++){
|
|
|
+ if( sp->firstset && SetFind(sp->firstset, j) ){
|
|
|
+ fprintf(fp, " %s", lemp->symbols[j]->name);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ if( sp->prec>=0 ) fprintf(fp," (precedence=%d)", sp->prec);
|
|
|
+ fprintf(fp, "\n");
|
|
|
+ }
|
|
|
+ fprintf(fp, "----------------------------------------------------\n");
|
|
|
+ fprintf(fp, "Syntax-only Symbols:\n");
|
|
|
+ fprintf(fp, "The following symbols never carry semantic content.\n\n");
|
|
|
+ for(i=n=0; i<lemp->nsymbol; i++){
|
|
|
+ int w;
|
|
|
+ struct symbol *sp = lemp->symbols[i];
|
|
|
+ if( sp->bContent ) continue;
|
|
|
+ w = (int)strlen(sp->name);
|
|
|
+ if( n>0 && n+w>75 ){
|
|
|
+ fprintf(fp,"\n");
|
|
|
+ n = 0;
|
|
|
+ }
|
|
|
+ if( n>0 ){
|
|
|
+ fprintf(fp, " ");
|
|
|
+ n++;
|
|
|
+ }
|
|
|
+ fprintf(fp, "%s", sp->name);
|
|
|
+ n += w;
|
|
|
+ }
|
|
|
+ if( n>0 ) fprintf(fp, "\n");
|
|
|
+ fprintf(fp, "----------------------------------------------------\n");
|
|
|
+ fprintf(fp, "Rules:\n");
|
|
|
+ for(rp=lemp->rule; rp; rp=rp->next){
|
|
|
+ fprintf(fp, "%4d: ", rp->iRule);
|
|
|
+ rule_print(fp, rp);
|
|
|
+ fprintf(fp,".");
|
|
|
+ if( rp->precsym ){
|
|
|
+ fprintf(fp," [%s precedence=%d]",
|
|
|
+ rp->precsym->name, rp->precsym->prec);
|
|
|
+ }
|
|
|
+ fprintf(fp,"\n");
|
|
|
+ }
|
|
|
+ fclose(fp);
|
|
|
+ return;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+** the executable */
|
|
|
+PRIVATE char *pathsearch(char *argv0, char *name, int modemask)
|
|
|
+{
|
|
|
+ const char *pathlist;
|
|
|
+ char *pathbufptr = 0;
|
|
|
+ char *pathbuf = 0;
|
|
|
+ char *path,*cp;
|
|
|
+ char c;
|
|
|
+
|
|
|
+#ifdef __WIN32__
|
|
|
+ cp = strrchr(argv0,'\\');
|
|
|
+#else
|
|
|
+ cp = strrchr(argv0,'/');
|
|
|
+#endif
|
|
|
+ if( cp ){
|
|
|
+ c = *cp;
|
|
|
+ *cp = 0;
|
|
|
+ path = (char *)malloc( lemonStrlen(argv0) + lemonStrlen(name) + 2 );
|
|
|
+ if( path ) lemon_sprintf(path,"%s/%s",argv0,name);
|
|
|
+ *cp = c;
|
|
|
+ }else{
|
|
|
+ pathlist = getenv("PATH");
|
|
|
+ if( pathlist==0 ) pathlist = ".:/bin:/usr/bin";
|
|
|
+ pathbuf = (char *) malloc( lemonStrlen(pathlist) + 1 );
|
|
|
+ path = (char *)malloc( lemonStrlen(pathlist)+lemonStrlen(name)+2 );
|
|
|
+ if( (pathbuf != 0) && (path!=0) ){
|
|
|
+ pathbufptr = pathbuf;
|
|
|
+ lemon_strcpy(pathbuf, pathlist);
|
|
|
+ while( *pathbuf ){
|
|
|
+ cp = strchr(pathbuf,':');
|
|
|
+ if( cp==0 ) cp = &pathbuf[lemonStrlen(pathbuf)];
|
|
|
+ c = *cp;
|
|
|
+ *cp = 0;
|
|
|
+ lemon_sprintf(path,"%s/%s",pathbuf,name);
|
|
|
+ *cp = c;
|
|
|
+ if( c==0 ) pathbuf[0] = 0;
|
|
|
+ else pathbuf = &cp[1];
|
|
|
+ if( access(path,modemask)==0 ) break;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ free(pathbufptr);
|
|
|
+ }
|
|
|
+ return path;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+** which is to be put in the action table of the generated machine.
|
|
|
+** Return negative if no action should be generated.
|
|
|
+*/
|
|
|
+PRIVATE int compute_action(struct lemon *lemp, struct action *ap)
|
|
|
+{
|
|
|
+ int act;
|
|
|
+ switch( ap->type ){
|
|
|
+ case SHIFT: act = ap->x.stp->statenum; break;
|
|
|
+ case SHIFTREDUCE: {
|
|
|
+
|
|
|
+ ** SHIFTREDUCE action with a nonterminal on the LHS into a simple
|
|
|
+ ** REDUCE action: */
|
|
|
+ if( ap->sp->index>=lemp->nterminal
|
|
|
+ && (lemp->errsym==0 || ap->sp->index!=lemp->errsym->index)
|
|
|
+ ){
|
|
|
+ act = lemp->minReduce + ap->x.rp->iRule;
|
|
|
+ }else{
|
|
|
+ act = lemp->minShiftReduce + ap->x.rp->iRule;
|
|
|
+ }
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ case REDUCE: act = lemp->minReduce + ap->x.rp->iRule; break;
|
|
|
+ case ERROR: act = lemp->errAction; break;
|
|
|
+ case ACCEPT: act = lemp->accAction; break;
|
|
|
+ default: act = -1; break;
|
|
|
+ }
|
|
|
+ return act;
|
|
|
+}
|
|
|
+
|
|
|
+#define LINESIZE 1000
|
|
|
+
|
|
|
+** and writing the results to the generated parser */
|
|
|
+
|
|
|
+** a line is seen which begins with "%%". The line number is
|
|
|
+** tracked.
|
|
|
+**
|
|
|
+** if name!=0, then any word that begin with "Parse" is changed to
|
|
|
+** begin with *name instead.
|
|
|
+*/
|
|
|
+PRIVATE void tplt_xfer(char *name, FILE *in, FILE *out, int *lineno)
|
|
|
+{
|
|
|
+ int i, iStart;
|
|
|
+ char line[LINESIZE];
|
|
|
+ while( fgets(line,LINESIZE,in) && (line[0]!='%' || line[1]!='%') ){
|
|
|
+ (*lineno)++;
|
|
|
+ iStart = 0;
|
|
|
+ if( name ){
|
|
|
+ for(i=0; line[i]; i++){
|
|
|
+ if( line[i]=='P' && strncmp(&line[i],"Parse",5)==0
|
|
|
+ && (i==0 || !ISALPHA(line[i-1]))
|
|
|
+ ){
|
|
|
+ if( i>iStart ) fprintf(out,"%.*s",i-iStart,&line[iStart]);
|
|
|
+ fprintf(out,"%s",name);
|
|
|
+ i += 4;
|
|
|
+ iStart = i+1;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ fprintf(out,"%s",&line[iStart]);
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+*/
|
|
|
+PRIVATE void tplt_skip_header(FILE *in, int *lineno)
|
|
|
+{
|
|
|
+ char line[LINESIZE];
|
|
|
+ while( fgets(line,LINESIZE,in) && (line[0]!='%' || line[1]!='%') ){
|
|
|
+ (*lineno)++;
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+** a pointer to the opened file. */
|
|
|
+PRIVATE FILE *tplt_open(struct lemon *lemp)
|
|
|
+{
|
|
|
+ static char templatename[] = "lempar.c";
|
|
|
+ char buf[1000];
|
|
|
+ FILE *in;
|
|
|
+ char *tpltname;
|
|
|
+ char *toFree = 0;
|
|
|
+ char *cp;
|
|
|
+
|
|
|
+
|
|
|
+ if (user_templatename != 0) {
|
|
|
+ if( access(user_templatename,004)==-1 ){
|
|
|
+ fprintf(stderr,"Can't find the parser driver template file \"%s\".\n",
|
|
|
+ user_templatename);
|
|
|
+ lemp->errorcnt++;
|
|
|
+ return 0;
|
|
|
+ }
|
|
|
+ in = fopen(user_templatename,"rb");
|
|
|
+ if( in==0 ){
|
|
|
+ fprintf(stderr,"Can't open the template file \"%s\".\n",
|
|
|
+ user_templatename);
|
|
|
+ lemp->errorcnt++;
|
|
|
+ return 0;
|
|
|
+ }
|
|
|
+ return in;
|
|
|
+ }
|
|
|
+
|
|
|
+ cp = strrchr(lemp->filename,'.');
|
|
|
+ if( cp ){
|
|
|
+ lemon_sprintf(buf,"%.*s.lt",(int)(cp-lemp->filename),lemp->filename);
|
|
|
+ }else{
|
|
|
+ lemon_sprintf(buf,"%s.lt",lemp->filename);
|
|
|
+ }
|
|
|
+ if( access(buf,004)==0 ){
|
|
|
+ tpltname = buf;
|
|
|
+ }else if( access(templatename,004)==0 ){
|
|
|
+ tpltname = templatename;
|
|
|
+ }else{
|
|
|
+ toFree = tpltname = pathsearch(lemp->argv0,templatename,0);
|
|
|
+ }
|
|
|
+ if( tpltname==0 ){
|
|
|
+ fprintf(stderr,"Can't find the parser driver template file \"%s\".\n",
|
|
|
+ templatename);
|
|
|
+ lemp->errorcnt++;
|
|
|
+ return 0;
|
|
|
+ }
|
|
|
+ in = fopen(tpltname,"rb");
|
|
|
+ if( in==0 ){
|
|
|
+ fprintf(stderr,"Can't open the template file \"%s\".\n",tpltname);
|
|
|
+ lemp->errorcnt++;
|
|
|
+ }
|
|
|
+ free(toFree);
|
|
|
+ return in;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+PRIVATE void tplt_linedir(FILE *out, int lineno, char *filename)
|
|
|
+{
|
|
|
+ fprintf(out,"#line %d \"",lineno);
|
|
|
+ while( *filename ){
|
|
|
+ if( *filename == '\\' ) putc('\\',out);
|
|
|
+ putc(*filename,out);
|
|
|
+ filename++;
|
|
|
+ }
|
|
|
+ fprintf(out,"\"\n");
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+PRIVATE void tplt_print(FILE *out, struct lemon *lemp, char *str, int *lineno)
|
|
|
+{
|
|
|
+ if( str==0 ) return;
|
|
|
+ while( *str ){
|
|
|
+ putc(*str,out);
|
|
|
+ if( *str=='\n' ) (*lineno)++;
|
|
|
+ str++;
|
|
|
+ }
|
|
|
+ if( str[-1]!='\n' ){
|
|
|
+ putc('\n',out);
|
|
|
+ (*lineno)++;
|
|
|
+ }
|
|
|
+ if (!lemp->nolinenosflag) {
|
|
|
+ (*lineno)++; tplt_linedir(out,*lineno,lemp->outname);
|
|
|
+ }
|
|
|
+ return;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+** The following routine emits code for the destructor for the
|
|
|
+** symbol sp
|
|
|
+*/
|
|
|
+void emit_destructor_code(
|
|
|
+ FILE *out,
|
|
|
+ struct symbol *sp,
|
|
|
+ struct lemon *lemp,
|
|
|
+ int *lineno
|
|
|
+){
|
|
|
+ char *cp = 0;
|
|
|
+
|
|
|
+ if( sp->type==TERMINAL ){
|
|
|
+ cp = lemp->tokendest;
|
|
|
+ if( cp==0 ) return;
|
|
|
+ fprintf(out,"{\n"); (*lineno)++;
|
|
|
+ }else if( sp->destructor ){
|
|
|
+ cp = sp->destructor;
|
|
|
+ fprintf(out,"{\n"); (*lineno)++;
|
|
|
+ if( !lemp->nolinenosflag ){
|
|
|
+ (*lineno)++;
|
|
|
+ tplt_linedir(out,sp->destLineno,lemp->filename);
|
|
|
+ }
|
|
|
+ }else if( lemp->vardest ){
|
|
|
+ cp = lemp->vardest;
|
|
|
+ if( cp==0 ) return;
|
|
|
+ fprintf(out,"{\n"); (*lineno)++;
|
|
|
+ }else{
|
|
|
+ assert( 0 );
|
|
|
+ }
|
|
|
+ for(; *cp; cp++){
|
|
|
+ if( *cp=='$' && cp[1]=='$' ){
|
|
|
+ fprintf(out,"(yypminor->yy%d)",sp->dtnum);
|
|
|
+ cp++;
|
|
|
+ continue;
|
|
|
+ }
|
|
|
+ if( *cp=='\n' ) (*lineno)++;
|
|
|
+ fputc(*cp,out);
|
|
|
+ }
|
|
|
+ fprintf(out,"\n"); (*lineno)++;
|
|
|
+ if (!lemp->nolinenosflag) {
|
|
|
+ (*lineno)++; tplt_linedir(out,*lineno,lemp->outname);
|
|
|
+ }
|
|
|
+ fprintf(out,"}\n"); (*lineno)++;
|
|
|
+ return;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+** Return TRUE (non-zero) if the given symbol has a destructor.
|
|
|
+*/
|
|
|
+int has_destructor(struct symbol *sp, struct lemon *lemp)
|
|
|
+{
|
|
|
+ int ret;
|
|
|
+ if( sp->type==TERMINAL ){
|
|
|
+ ret = lemp->tokendest!=0;
|
|
|
+ }else{
|
|
|
+ ret = lemp->vardest!=0 || sp->destructor!=0;
|
|
|
+ }
|
|
|
+ return ret;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+** Append text to a dynamically allocated string. If zText is 0 then
|
|
|
+** reset the string to be empty again. Always return the complete text
|
|
|
+** of the string (which is overwritten with each call).
|
|
|
+**
|
|
|
+** n bytes of zText are stored. If n==0 then all of zText up to the first
|
|
|
+** \000 terminator is stored. zText can contain up to two instances of
|
|
|
+** %d. The values of p1 and p2 are written into the first and second
|
|
|
+** %d.
|
|
|
+**
|
|
|
+** If n==-1, then the previous character is overwritten.
|
|
|
+*/
|
|
|
+PRIVATE char *append_str(const char *zText, int n, int p1, int p2){
|
|
|
+ static char empty[1] = { 0 };
|
|
|
+ static char *z = 0;
|
|
|
+ static int alloced = 0;
|
|
|
+ static int used = 0;
|
|
|
+ int c;
|
|
|
+ char zInt[40];
|
|
|
+ if( zText==0 ){
|
|
|
+ if( used==0 && z!=0 ) z[0] = 0;
|
|
|
+ used = 0;
|
|
|
+ return z;
|
|
|
+ }
|
|
|
+ if( n<=0 ){
|
|
|
+ if( n<0 ){
|
|
|
+ used += n;
|
|
|
+ assert( used>=0 );
|
|
|
+ }
|
|
|
+ n = lemonStrlen(zText);
|
|
|
+ }
|
|
|
+ if( (int) (n+sizeof(zInt)*2+used) >= alloced ){
|
|
|
+ alloced = n + sizeof(zInt)*2 + used + 200;
|
|
|
+ z = (char *) realloc(z, alloced);
|
|
|
+ }
|
|
|
+ if( z==0 ) return empty;
|
|
|
+ while( n-- > 0 ){
|
|
|
+ c = *(zText++);
|
|
|
+ if( c=='%' && n>0 && zText[0]=='d' ){
|
|
|
+ lemon_sprintf(zInt, "%d", p1);
|
|
|
+ p1 = p2;
|
|
|
+ lemon_strcpy(&z[used], zInt);
|
|
|
+ used += lemonStrlen(&z[used]);
|
|
|
+ zText++;
|
|
|
+ n--;
|
|
|
+ }else{
|
|
|
+ z[used++] = (char)c;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ z[used] = 0;
|
|
|
+ return z;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+** Write and transform the rp->code string so that symbols are expanded.
|
|
|
+** Populate the rp->codePrefix and rp->codeSuffix strings, as appropriate.
|
|
|
+**
|
|
|
+** Return 1 if the expanded code requires that "yylhsminor" local variable
|
|
|
+** to be defined.
|
|
|
+*/
|
|
|
+PRIVATE int translate_code(struct lemon *lemp, struct rule *rp){
|
|
|
+ char *cp, *xp;
|
|
|
+ int i;
|
|
|
+ int rc = 0;
|
|
|
+ int dontUseRhs0 = 0;
|
|
|
+ const char *zSkip = 0;
|
|
|
+ char lhsused = 0;
|
|
|
+ char lhsdirect;
|
|
|
+ char used[MAXRHS];
|
|
|
+ char zLhs[50];
|
|
|
+ char zOvwrt[900];
|
|
|
+
|
|
|
+ for(i=0; i<rp->nrhs; i++) used[i] = 0;
|
|
|
+ lhsused = 0;
|
|
|
+
|
|
|
+ if( rp->code==0 ){
|
|
|
+ static char newlinestr[2] = { '\n', '\0' };
|
|
|
+ rp->code = newlinestr;
|
|
|
+ rp->line = rp->ruleline;
|
|
|
+ rp->noCode = 1;
|
|
|
+ }else{
|
|
|
+ rp->noCode = 0;
|
|
|
+ }
|
|
|
+
|
|
|
+
|
|
|
+ if( rp->nrhs==0 ){
|
|
|
+
|
|
|
+ lhsdirect = 1;
|
|
|
+ }else if( rp->rhsalias[0]==0 ){
|
|
|
+
|
|
|
+ ** we have to call the destructor on the RHS symbol first. */
|
|
|
+ lhsdirect = 1;
|
|
|
+ if( has_destructor(rp->rhs[0],lemp) ){
|
|
|
+ append_str(0,0,0,0);
|
|
|
+ append_str(" yy_destructor(yypParser,%d,&yymsp[%d].minor);\n", 0,
|
|
|
+ rp->rhs[0]->index,1-rp->nrhs);
|
|
|
+ rp->codePrefix = Strsafe(append_str(0,0,0,0));
|
|
|
+ rp->noCode = 0;
|
|
|
+ }
|
|
|
+ }else if( rp->lhsalias==0 ){
|
|
|
+
|
|
|
+ lhsdirect = 1;
|
|
|
+ }else if( strcmp(rp->lhsalias,rp->rhsalias[0])==0 ){
|
|
|
+
|
|
|
+ ** direct writing is allowed */
|
|
|
+ lhsdirect = 1;
|
|
|
+ lhsused = 1;
|
|
|
+ used[0] = 1;
|
|
|
+ if( rp->lhs->dtnum!=rp->rhs[0]->dtnum ){
|
|
|
+ ErrorMsg(lemp->filename,rp->ruleline,
|
|
|
+ "%s(%s) and %s(%s) share the same label but have "
|
|
|
+ "different datatypes.",
|
|
|
+ rp->lhs->name, rp->lhsalias, rp->rhs[0]->name, rp->rhsalias[0]);
|
|
|
+ lemp->errorcnt++;
|
|
|
+ }
|
|
|
+ }else{
|
|
|
+ lemon_sprintf(zOvwrt, "/*%s-overwrites-%s*/",
|
|
|
+ rp->lhsalias, rp->rhsalias[0]);
|
|
|
+ zSkip = strstr(rp->code, zOvwrt);
|
|
|
+ if( zSkip!=0 ){
|
|
|
+
|
|
|
+ ** for the LHS label to overwrite left-most RHS label. */
|
|
|
+ lhsdirect = 1;
|
|
|
+ }else{
|
|
|
+ lhsdirect = 0;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ if( lhsdirect ){
|
|
|
+ sprintf(zLhs, "yymsp[%d].minor.yy%d",1-rp->nrhs,rp->lhs->dtnum);
|
|
|
+ }else{
|
|
|
+ rc = 1;
|
|
|
+ sprintf(zLhs, "yylhsminor.yy%d",rp->lhs->dtnum);
|
|
|
+ }
|
|
|
+
|
|
|
+ append_str(0,0,0,0);
|
|
|
+
|
|
|
+
|
|
|
+ for(cp=(char *)rp->code; *cp; cp++){
|
|
|
+ if( cp==zSkip ){
|
|
|
+ append_str(zOvwrt,0,0,0);
|
|
|
+ cp += lemonStrlen(zOvwrt)-1;
|
|
|
+ dontUseRhs0 = 1;
|
|
|
+ continue;
|
|
|
+ }
|
|
|
+ if( ISALPHA(*cp) && (cp==rp->code || (!ISALNUM(cp[-1]) && cp[-1]!='_')) ){
|
|
|
+ char saved;
|
|
|
+ for(xp= &cp[1]; ISALNUM(*xp) || *xp=='_'; xp++);
|
|
|
+ saved = *xp;
|
|
|
+ *xp = 0;
|
|
|
+ if( rp->lhsalias && strcmp(cp,rp->lhsalias)==0 ){
|
|
|
+ append_str(zLhs,0,0,0);
|
|
|
+ cp = xp;
|
|
|
+ lhsused = 1;
|
|
|
+ }else{
|
|
|
+ for(i=0; i<rp->nrhs; i++){
|
|
|
+ if( rp->rhsalias[i] && strcmp(cp,rp->rhsalias[i])==0 ){
|
|
|
+ if( i==0 && dontUseRhs0 ){
|
|
|
+ ErrorMsg(lemp->filename,rp->ruleline,
|
|
|
+ "Label %s used after '%s'.",
|
|
|
+ rp->rhsalias[0], zOvwrt);
|
|
|
+ lemp->errorcnt++;
|
|
|
+ }else if( cp!=rp->code && cp[-1]=='@' ){
|
|
|
+
|
|
|
+ ** the token number of X, not the value of X */
|
|
|
+ append_str("yymsp[%d].major",-1,i-rp->nrhs+1,0);
|
|
|
+ }else{
|
|
|
+ struct symbol *sp = rp->rhs[i];
|
|
|
+ int dtnum;
|
|
|
+ if( sp->type==MULTITERMINAL ){
|
|
|
+ dtnum = sp->subsym[0]->dtnum;
|
|
|
+ }else{
|
|
|
+ dtnum = sp->dtnum;
|
|
|
+ }
|
|
|
+ append_str("yymsp[%d].minor.yy%d",0,i-rp->nrhs+1, dtnum);
|
|
|
+ }
|
|
|
+ cp = xp;
|
|
|
+ used[i] = 1;
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ *xp = saved;
|
|
|
+ }
|
|
|
+ append_str(cp, 1, 0, 0);
|
|
|
+ }
|
|
|
+
|
|
|
+
|
|
|
+ cp = append_str(0,0,0,0);
|
|
|
+ if( cp && cp[0] ) rp->code = Strsafe(cp);
|
|
|
+ append_str(0,0,0,0);
|
|
|
+
|
|
|
+
|
|
|
+ if( rp->lhsalias && !lhsused ){
|
|
|
+ ErrorMsg(lemp->filename,rp->ruleline,
|
|
|
+ "Label \"%s\" for \"%s(%s)\" is never used.",
|
|
|
+ rp->lhsalias,rp->lhs->name,rp->lhsalias);
|
|
|
+ lemp->errorcnt++;
|
|
|
+ }
|
|
|
+
|
|
|
+
|
|
|
+ ** Generate error messages for unused labels and duplicate labels.
|
|
|
+ */
|
|
|
+ for(i=0; i<rp->nrhs; i++){
|
|
|
+ if( rp->rhsalias[i] ){
|
|
|
+ if( i>0 ){
|
|
|
+ int j;
|
|
|
+ if( rp->lhsalias && strcmp(rp->lhsalias,rp->rhsalias[i])==0 ){
|
|
|
+ ErrorMsg(lemp->filename,rp->ruleline,
|
|
|
+ "%s(%s) has the same label as the LHS but is not the left-most "
|
|
|
+ "symbol on the RHS.",
|
|
|
+ rp->rhs[i]->name, rp->rhsalias[i]);
|
|
|
+ lemp->errorcnt++;
|
|
|
+ }
|
|
|
+ for(j=0; j<i; j++){
|
|
|
+ if( rp->rhsalias[j] && strcmp(rp->rhsalias[j],rp->rhsalias[i])==0 ){
|
|
|
+ ErrorMsg(lemp->filename,rp->ruleline,
|
|
|
+ "Label %s used for multiple symbols on the RHS of a rule.",
|
|
|
+ rp->rhsalias[i]);
|
|
|
+ lemp->errorcnt++;
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ if( !used[i] ){
|
|
|
+ ErrorMsg(lemp->filename,rp->ruleline,
|
|
|
+ "Label %s for \"%s(%s)\" is never used.",
|
|
|
+ rp->rhsalias[i],rp->rhs[i]->name,rp->rhsalias[i]);
|
|
|
+ lemp->errorcnt++;
|
|
|
+ }
|
|
|
+ }else if( i>0 && has_destructor(rp->rhs[i],lemp) ){
|
|
|
+ append_str(" yy_destructor(yypParser,%d,&yymsp[%d].minor);\n", 0,
|
|
|
+ rp->rhs[i]->index,i-rp->nrhs+1);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+
|
|
|
+ ** saved LHS value now. */
|
|
|
+ if( lhsdirect==0 ){
|
|
|
+ append_str(" yymsp[%d].minor.yy%d = ", 0, 1-rp->nrhs, rp->lhs->dtnum);
|
|
|
+ append_str(zLhs, 0, 0, 0);
|
|
|
+ append_str(";\n", 0, 0, 0);
|
|
|
+ }
|
|
|
+
|
|
|
+
|
|
|
+ cp = append_str(0,0,0,0);
|
|
|
+ if( cp && cp[0] ){
|
|
|
+ rp->codeSuffix = Strsafe(cp);
|
|
|
+ rp->noCode = 0;
|
|
|
+ }
|
|
|
+
|
|
|
+ return rc;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+** Generate code which executes when the rule "rp" is reduced. Write
|
|
|
+** the code to "out". Make sure lineno stays up-to-date.
|
|
|
+*/
|
|
|
+PRIVATE void emit_code(
|
|
|
+ FILE *out,
|
|
|
+ struct rule *rp,
|
|
|
+ struct lemon *lemp,
|
|
|
+ int *lineno
|
|
|
+){
|
|
|
+ const char *cp;
|
|
|
+
|
|
|
+
|
|
|
+ if( rp->codePrefix && rp->codePrefix[0] ){
|
|
|
+ fprintf(out, "{%s", rp->codePrefix);
|
|
|
+ for(cp=rp->codePrefix; *cp; cp++){ if( *cp=='\n' ) (*lineno)++; }
|
|
|
+ }
|
|
|
+
|
|
|
+
|
|
|
+ if( rp->code ){
|
|
|
+ if( !lemp->nolinenosflag ){
|
|
|
+ (*lineno)++;
|
|
|
+ tplt_linedir(out,rp->line,lemp->filename);
|
|
|
+ }
|
|
|
+ fprintf(out,"{%s",rp->code);
|
|
|
+ for(cp=rp->code; *cp; cp++){ if( *cp=='\n' ) (*lineno)++; }
|
|
|
+ fprintf(out,"}\n"); (*lineno)++;
|
|
|
+ if( !lemp->nolinenosflag ){
|
|
|
+ (*lineno)++;
|
|
|
+ tplt_linedir(out,*lineno,lemp->outname);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+
|
|
|
+ if( rp->codeSuffix && rp->codeSuffix[0] ){
|
|
|
+ fprintf(out, "%s", rp->codeSuffix);
|
|
|
+ for(cp=rp->codeSuffix; *cp; cp++){ if( *cp=='\n' ) (*lineno)++; }
|
|
|
+ }
|
|
|
+
|
|
|
+ if( rp->codePrefix ){
|
|
|
+ fprintf(out, "}\n"); (*lineno)++;
|
|
|
+ }
|
|
|
+
|
|
|
+ return;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+** Print the definition of the union used for the parser's data stack.
|
|
|
+** This union contains fields for every possible data type for tokens
|
|
|
+** and nonterminals. In the process of computing and printing this
|
|
|
+** union, also set the ".dtnum" field of every terminal and nonterminal
|
|
|
+** symbol.
|
|
|
+*/
|
|
|
+void print_stack_union(
|
|
|
+ FILE *out,
|
|
|
+ struct lemon *lemp, /* The main info structure for this parser */
|
|
|
+ int *plineno,
|
|
|
+ int mhflag
|
|
|
+){
|
|
|
+ int lineno;
|
|
|
+ char **types;
|
|
|
+ int arraysize;
|
|
|
+ int maxdtlength;
|
|
|
+ char *stddt;
|
|
|
+ int i,j;
|
|
|
+ unsigned hash;
|
|
|
+ const char *name;
|
|
|
+
|
|
|
+
|
|
|
+ arraysize = lemp->nsymbol * 2;
|
|
|
+ types = (char**)calloc( arraysize, sizeof(char*) );
|
|
|
+ if( types==0 ){
|
|
|
+ fprintf(stderr,"Out of memory.\n");
|
|
|
+ exit(1);
|
|
|
+ }
|
|
|
+ for(i=0; i<arraysize; i++) types[i] = 0;
|
|
|
+ maxdtlength = 0;
|
|
|
+ if( lemp->vartype ){
|
|
|
+ maxdtlength = lemonStrlen(lemp->vartype);
|
|
|
+ }
|
|
|
+ for(i=0; i<lemp->nsymbol; i++){
|
|
|
+ int len;
|
|
|
+ struct symbol *sp = lemp->symbols[i];
|
|
|
+ if( sp->datatype==0 ) continue;
|
|
|
+ len = lemonStrlen(sp->datatype);
|
|
|
+ if( len>maxdtlength ) maxdtlength = len;
|
|
|
+ }
|
|
|
+ stddt = (char*)malloc( maxdtlength*2 + 1 );
|
|
|
+ if( stddt==0 ){
|
|
|
+ fprintf(stderr,"Out of memory.\n");
|
|
|
+ exit(1);
|
|
|
+ }
|
|
|
+
|
|
|
+
|
|
|
+ ** is filled in with the hash index plus 1. A ".dtnum" value of 0 is
|
|
|
+ ** used for terminal symbols. If there is no %default_type defined then
|
|
|
+ ** 0 is also used as the .dtnum value for nonterminals which do not specify
|
|
|
+ ** a datatype using the %type directive.
|
|
|
+ */
|
|
|
+ for(i=0; i<lemp->nsymbol; i++){
|
|
|
+ struct symbol *sp = lemp->symbols[i];
|
|
|
+ char *cp;
|
|
|
+ if( sp==lemp->errsym ){
|
|
|
+ sp->dtnum = arraysize+1;
|
|
|
+ continue;
|
|
|
+ }
|
|
|
+ if( sp->type!=NONTERMINAL || (sp->datatype==0 && lemp->vartype==0) ){
|
|
|
+ sp->dtnum = 0;
|
|
|
+ continue;
|
|
|
+ }
|
|
|
+ cp = sp->datatype;
|
|
|
+ if( cp==0 ) cp = lemp->vartype;
|
|
|
+ j = 0;
|
|
|
+ while( ISSPACE(*cp) ) cp++;
|
|
|
+ while( *cp ) stddt[j++] = *cp++;
|
|
|
+ while( j>0 && ISSPACE(stddt[j-1]) ) j--;
|
|
|
+ stddt[j] = 0;
|
|
|
+ if( lemp->tokentype && strcmp(stddt, lemp->tokentype)==0 ){
|
|
|
+ sp->dtnum = 0;
|
|
|
+ continue;
|
|
|
+ }
|
|
|
+ hash = 0;
|
|
|
+ for(j=0; stddt[j]; j++){
|
|
|
+ hash = hash*53 + stddt[j];
|
|
|
+ }
|
|
|
+ hash = (hash & 0x7fffffff)%arraysize;
|
|
|
+ while( types[hash] ){
|
|
|
+ if( strcmp(types[hash],stddt)==0 ){
|
|
|
+ sp->dtnum = hash + 1;
|
|
|
+ break;
|
|
|
+ }
|
|
|
+ hash++;
|
|
|
+ if( hash>=(unsigned)arraysize ) hash = 0;
|
|
|
+ }
|
|
|
+ if( types[hash]==0 ){
|
|
|
+ sp->dtnum = hash + 1;
|
|
|
+ types[hash] = (char*)malloc( lemonStrlen(stddt)+1 );
|
|
|
+ if( types[hash]==0 ){
|
|
|
+ fprintf(stderr,"Out of memory.\n");
|
|
|
+ exit(1);
|
|
|
+ }
|
|
|
+ lemon_strcpy(types[hash],stddt);
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+
|
|
|
+ name = lemp->name ? lemp->name : "Parse";
|
|
|
+ lineno = *plineno;
|
|
|
+ if( mhflag ){ fprintf(out,"#if INTERFACE\n"); lineno++; }
|
|
|
+ fprintf(out,"#define %sTOKENTYPE %s\n",name,
|
|
|
+ lemp->tokentype?lemp->tokentype:"void*"); lineno++;
|
|
|
+ if( mhflag ){ fprintf(out,"#endif\n"); lineno++; }
|
|
|
+ fprintf(out,"typedef union {\n"); lineno++;
|
|
|
+ fprintf(out," int yyinit;\n"); lineno++;
|
|
|
+ fprintf(out," %sTOKENTYPE yy0;\n",name); lineno++;
|
|
|
+ for(i=0; i<arraysize; i++){
|
|
|
+ if( types[i]==0 ) continue;
|
|
|
+ fprintf(out," %s yy%d;\n",types[i],i+1); lineno++;
|
|
|
+ free(types[i]);
|
|
|
+ }
|
|
|
+ if( lemp->errsym && lemp->errsym->useCnt ){
|
|
|
+ fprintf(out," int yy%d;\n",lemp->errsym->dtnum); lineno++;
|
|
|
+ }
|
|
|
+ free(stddt);
|
|
|
+ free(types);
|
|
|
+ fprintf(out,"} YYMINORTYPE;\n"); lineno++;
|
|
|
+ *plineno = lineno;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+** Return the name of a C datatype able to represent values between
|
|
|
+** lwr and upr, inclusive. If pnByte!=NULL then also write the sizeof
|
|
|
+** for that type (1, 2, or 4) into *pnByte.
|
|
|
+*/
|
|
|
+static const char *minimum_size_type(int lwr, int upr, int *pnByte){
|
|
|
+ const char *zType = "int";
|
|
|
+ int nByte = 4;
|
|
|
+ if( lwr>=0 ){
|
|
|
+ if( upr<=255 ){
|
|
|
+ zType = "unsigned char";
|
|
|
+ nByte = 1;
|
|
|
+ }else if( upr<65535 ){
|
|
|
+ zType = "unsigned short int";
|
|
|
+ nByte = 2;
|
|
|
+ }else{
|
|
|
+ zType = "unsigned int";
|
|
|
+ nByte = 4;
|
|
|
+ }
|
|
|
+ }else if( lwr>=-127 && upr<=127 ){
|
|
|
+ zType = "signed char";
|
|
|
+ nByte = 1;
|
|
|
+ }else if( lwr>=-32767 && upr<32767 ){
|
|
|
+ zType = "short";
|
|
|
+ nByte = 2;
|
|
|
+ }
|
|
|
+ if( pnByte ) *pnByte = nByte;
|
|
|
+ return zType;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+** Each state contains a set of token transaction and a set of
|
|
|
+** nonterminal transactions. Each of these sets makes an instance
|
|
|
+** of the following structure. An array of these structures is used
|
|
|
+** to order the creation of entries in the yy_action[] table.
|
|
|
+*/
|
|
|
+struct axset {
|
|
|
+ struct state *stp;
|
|
|
+ int isTkn;
|
|
|
+ int nAction;
|
|
|
+ int iOrder;
|
|
|
+};
|
|
|
+
|
|
|
+
|
|
|
+** Compare to axset structures for sorting purposes
|
|
|
+*/
|
|
|
+static int axset_compare(const void *a, const void *b){
|
|
|
+ struct axset *p1 = (struct axset*)a;
|
|
|
+ struct axset *p2 = (struct axset*)b;
|
|
|
+ int c;
|
|
|
+ c = p2->nAction - p1->nAction;
|
|
|
+ if( c==0 ){
|
|
|
+ c = p1->iOrder - p2->iOrder;
|
|
|
+ }
|
|
|
+ assert( c!=0 || p1==p2 );
|
|
|
+ return c;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+** Write text on "out" that describes the rule "rp".
|
|
|
+*/
|
|
|
+static void writeRuleText(FILE *out, struct rule *rp){
|
|
|
+ int j;
|
|
|
+ fprintf(out,"%s ::=", rp->lhs->name);
|
|
|
+ for(j=0; j<rp->nrhs; j++){
|
|
|
+ struct symbol *sp = rp->rhs[j];
|
|
|
+ if( sp->type!=MULTITERMINAL ){
|
|
|
+ fprintf(out," %s", sp->name);
|
|
|
+ }else{
|
|
|
+ int k;
|
|
|
+ fprintf(out," %s", sp->subsym[0]->name);
|
|
|
+ for(k=1; k<sp->nsubsym; k++){
|
|
|
+ fprintf(out,"|%s",sp->subsym[k]->name);
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+void ReportTable(
|
|
|
+ struct lemon *lemp,
|
|
|
+ int mhflag,
|
|
|
+ int sqlFlag
|
|
|
+){
|
|
|
+ FILE *out, *in, *sql;
|
|
|
+ int lineno;
|
|
|
+ struct state *stp;
|
|
|
+ struct action *ap;
|
|
|
+ struct rule *rp;
|
|
|
+ struct acttab *pActtab;
|
|
|
+ int i, j, n, sz;
|
|
|
+ int nLookAhead;
|
|
|
+ int szActionType;
|
|
|
+ int szCodeType;
|
|
|
+ const char *name;
|
|
|
+ int mnTknOfst, mxTknOfst;
|
|
|
+ int mnNtOfst, mxNtOfst;
|
|
|
+ struct axset *ax;
|
|
|
+ char *prefix;
|
|
|
+
|
|
|
+ lemp->minShiftReduce = lemp->nstate;
|
|
|
+ lemp->errAction = lemp->minShiftReduce + lemp->nrule;
|
|
|
+ lemp->accAction = lemp->errAction + 1;
|
|
|
+ lemp->noAction = lemp->accAction + 1;
|
|
|
+ lemp->minReduce = lemp->noAction + 1;
|
|
|
+ lemp->maxAction = lemp->minReduce + lemp->nrule;
|
|
|
+
|
|
|
+ in = tplt_open(lemp);
|
|
|
+ if( in==0 ) return;
|
|
|
+ out = file_open(lemp,".c","wb");
|
|
|
+ if( out==0 ){
|
|
|
+ fclose(in);
|
|
|
+ return;
|
|
|
+ }
|
|
|
+ if( sqlFlag==0 ){
|
|
|
+ sql = 0;
|
|
|
+ }else{
|
|
|
+ sql = file_open(lemp, ".sql", "wb");
|
|
|
+ if( sql==0 ){
|
|
|
+ fclose(in);
|
|
|
+ fclose(out);
|
|
|
+ return;
|
|
|
+ }
|
|
|
+ fprintf(sql,
|
|
|
+ "BEGIN;\n"
|
|
|
+ "CREATE TABLE symbol(\n"
|
|
|
+ " id INTEGER PRIMARY KEY,\n"
|
|
|
+ " name TEXT NOT NULL,\n"
|
|
|
+ " isTerminal BOOLEAN NOT NULL,\n"
|
|
|
+ " fallback INTEGER REFERENCES symbol"
|
|
|
+ " DEFERRABLE INITIALLY DEFERRED\n"
|
|
|
+ ");\n"
|
|
|
+ );
|
|
|
+ for(i=0; i<lemp->nsymbol; i++){
|
|
|
+ fprintf(sql,
|
|
|
+ "INSERT INTO symbol(id,name,isTerminal,fallback)"
|
|
|
+ "VALUES(%d,'%s',%s",
|
|
|
+ i, lemp->symbols[i]->name,
|
|
|
+ i<lemp->nterminal ? "TRUE" : "FALSE"
|
|
|
+ );
|
|
|
+ if( lemp->symbols[i]->fallback ){
|
|
|
+ fprintf(sql, ",%d);\n", lemp->symbols[i]->fallback->index);
|
|
|
+ }else{
|
|
|
+ fprintf(sql, ",NULL);\n");
|
|
|
+ }
|
|
|
+ }
|
|
|
+ fprintf(sql,
|
|
|
+ "CREATE TABLE rule(\n"
|
|
|
+ " ruleid INTEGER PRIMARY KEY,\n"
|
|
|
+ " lhs INTEGER REFERENCES symbol(id),\n"
|
|
|
+ " txt TEXT\n"
|
|
|
+ ");\n"
|
|
|
+ "CREATE TABLE rulerhs(\n"
|
|
|
+ " ruleid INTEGER REFERENCES rule(ruleid),\n"
|
|
|
+ " pos INTEGER,\n"
|
|
|
+ " sym INTEGER REFERENCES symbol(id)\n"
|
|
|
+ ");\n"
|
|
|
+ );
|
|
|
+ for(i=0, rp=lemp->rule; rp; rp=rp->next, i++){
|
|
|
+ assert( i==rp->iRule );
|
|
|
+ fprintf(sql,
|
|
|
+ "INSERT INTO rule(ruleid,lhs,txt)VALUES(%d,%d,'",
|
|
|
+ rp->iRule, rp->lhs->index
|
|
|
+ );
|
|
|
+ writeRuleText(sql, rp);
|
|
|
+ fprintf(sql,"');\n");
|
|
|
+ for(j=0; j<rp->nrhs; j++){
|
|
|
+ struct symbol *sp = rp->rhs[j];
|
|
|
+ if( sp->type!=MULTITERMINAL ){
|
|
|
+ fprintf(sql,
|
|
|
+ "INSERT INTO rulerhs(ruleid,pos,sym)VALUES(%d,%d,%d);\n",
|
|
|
+ i,j,sp->index
|
|
|
+ );
|
|
|
+ }else{
|
|
|
+ int k;
|
|
|
+ for(k=0; k<sp->nsubsym; k++){
|
|
|
+ fprintf(sql,
|
|
|
+ "INSERT INTO rulerhs(ruleid,pos,sym)VALUES(%d,%d,%d);\n",
|
|
|
+ i,j,sp->subsym[k]->index
|
|
|
+ );
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ fprintf(sql, "COMMIT;\n");
|
|
|
+ }
|
|
|
+ lineno = 1;
|
|
|
+
|
|
|
+ fprintf(out,
|
|
|
+ "/* This file is automatically generated by Lemon from input grammar\n"
|
|
|
+ "** source file \"%s\". */\n", lemp->filename); lineno += 2;
|
|
|
+
|
|
|
+
|
|
|
+ ** then skip over the header comment of the template file
|
|
|
+ */
|
|
|
+ if( lemp->include==0 ) lemp->include = "";
|
|
|
+ for(i=0; ISSPACE(lemp->include[i]); i++){
|
|
|
+ if( lemp->include[i]=='\n' ){
|
|
|
+ lemp->include += i+1;
|
|
|
+ i = -1;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ if( lemp->include[0]=='/' ){
|
|
|
+ tplt_skip_header(in,&lineno);
|
|
|
+ }else{
|
|
|
+ tplt_xfer(lemp->name,in,out,&lineno);
|
|
|
+ }
|
|
|
+
|
|
|
+
|
|
|
+ tplt_print(out,lemp,lemp->include,&lineno);
|
|
|
+ if( mhflag ){
|
|
|
+ char *incName = file_makename(lemp, ".h");
|
|
|
+ fprintf(out,"#include \"%s\"\n", incName); lineno++;
|
|
|
+ free(incName);
|
|
|
+ }
|
|
|
+ tplt_xfer(lemp->name,in,out,&lineno);
|
|
|
+
|
|
|
+
|
|
|
+ if( lemp->tokenprefix ) prefix = lemp->tokenprefix;
|
|
|
+ else prefix = "";
|
|
|
+ if( mhflag ){
|
|
|
+ fprintf(out,"#if INTERFACE\n"); lineno++;
|
|
|
+ }else{
|
|
|
+ fprintf(out,"#ifndef %s%s\n", prefix, lemp->symbols[1]->name);
|
|
|
+ }
|
|
|
+ for(i=1; i<lemp->nterminal; i++){
|
|
|
+ fprintf(out,"#define %s%-30s %2d\n",prefix,lemp->symbols[i]->name,i);
|
|
|
+ lineno++;
|
|
|
+ }
|
|
|
+ fprintf(out,"#endif\n"); lineno++;
|
|
|
+ tplt_xfer(lemp->name,in,out,&lineno);
|
|
|
+
|
|
|
+
|
|
|
+ fprintf(out,"#define YYCODETYPE %s\n",
|
|
|
+ minimum_size_type(0, lemp->nsymbol, &szCodeType)); lineno++;
|
|
|
+ fprintf(out,"#define YYNOCODE %d\n",lemp->nsymbol); lineno++;
|
|
|
+ fprintf(out,"#define YYACTIONTYPE %s\n",
|
|
|
+ minimum_size_type(0,lemp->maxAction,&szActionType)); lineno++;
|
|
|
+ if( lemp->wildcard ){
|
|
|
+ fprintf(out,"#define YYWILDCARD %d\n",
|
|
|
+ lemp->wildcard->index); lineno++;
|
|
|
+ }
|
|
|
+ print_stack_union(out,lemp,&lineno,mhflag);
|
|
|
+ fprintf(out, "#ifndef YYSTACKDEPTH\n"); lineno++;
|
|
|
+ if( lemp->stacksize ){
|
|
|
+ fprintf(out,"#define YYSTACKDEPTH %s\n",lemp->stacksize); lineno++;
|
|
|
+ }else{
|
|
|
+ fprintf(out,"#define YYSTACKDEPTH 100\n"); lineno++;
|
|
|
+ }
|
|
|
+ fprintf(out, "#endif\n"); lineno++;
|
|
|
+ if( mhflag ){
|
|
|
+ fprintf(out,"#if INTERFACE\n"); lineno++;
|
|
|
+ }
|
|
|
+ name = lemp->name ? lemp->name : "Parse";
|
|
|
+ if( lemp->arg && lemp->arg[0] ){
|
|
|
+ i = lemonStrlen(lemp->arg);
|
|
|
+ while( i>=1 && ISSPACE(lemp->arg[i-1]) ) i--;
|
|
|
+ while( i>=1 && (ISALNUM(lemp->arg[i-1]) || lemp->arg[i-1]=='_') ) i--;
|
|
|
+ fprintf(out,"#define %sARG_SDECL %s;\n",name,lemp->arg); lineno++;
|
|
|
+ fprintf(out,"#define %sARG_PDECL ,%s\n",name,lemp->arg); lineno++;
|
|
|
+ fprintf(out,"#define %sARG_PARAM ,%s\n",name,&lemp->arg[i]); lineno++;
|
|
|
+ fprintf(out,"#define %sARG_FETCH %s=yypParser->%s;\n",
|
|
|
+ name,lemp->arg,&lemp->arg[i]); lineno++;
|
|
|
+ fprintf(out,"#define %sARG_STORE yypParser->%s=%s;\n",
|
|
|
+ name,&lemp->arg[i],&lemp->arg[i]); lineno++;
|
|
|
+ }else{
|
|
|
+ fprintf(out,"#define %sARG_SDECL\n",name); lineno++;
|
|
|
+ fprintf(out,"#define %sARG_PDECL\n",name); lineno++;
|
|
|
+ fprintf(out,"#define %sARG_PARAM\n",name); lineno++;
|
|
|
+ fprintf(out,"#define %sARG_FETCH\n",name); lineno++;
|
|
|
+ fprintf(out,"#define %sARG_STORE\n",name); lineno++;
|
|
|
+ }
|
|
|
+ if( lemp->ctx && lemp->ctx[0] ){
|
|
|
+ i = lemonStrlen(lemp->ctx);
|
|
|
+ while( i>=1 && ISSPACE(lemp->ctx[i-1]) ) i--;
|
|
|
+ while( i>=1 && (ISALNUM(lemp->ctx[i-1]) || lemp->ctx[i-1]=='_') ) i--;
|
|
|
+ fprintf(out,"#define %sCTX_SDECL %s;\n",name,lemp->ctx); lineno++;
|
|
|
+ fprintf(out,"#define %sCTX_PDECL ,%s\n",name,lemp->ctx); lineno++;
|
|
|
+ fprintf(out,"#define %sCTX_PARAM ,%s\n",name,&lemp->ctx[i]); lineno++;
|
|
|
+ fprintf(out,"#define %sCTX_FETCH %s=yypParser->%s;\n",
|
|
|
+ name,lemp->ctx,&lemp->ctx[i]); lineno++;
|
|
|
+ fprintf(out,"#define %sCTX_STORE yypParser->%s=%s;\n",
|
|
|
+ name,&lemp->ctx[i],&lemp->ctx[i]); lineno++;
|
|
|
+ }else{
|
|
|
+ fprintf(out,"#define %sCTX_SDECL\n",name); lineno++;
|
|
|
+ fprintf(out,"#define %sCTX_PDECL\n",name); lineno++;
|
|
|
+ fprintf(out,"#define %sCTX_PARAM\n",name); lineno++;
|
|
|
+ fprintf(out,"#define %sCTX_FETCH\n",name); lineno++;
|
|
|
+ fprintf(out,"#define %sCTX_STORE\n",name); lineno++;
|
|
|
+ }
|
|
|
+ if( mhflag ){
|
|
|
+ fprintf(out,"#endif\n"); lineno++;
|
|
|
+ }
|
|
|
+ if( lemp->errsym && lemp->errsym->useCnt ){
|
|
|
+ fprintf(out,"#define YYERRORSYMBOL %d\n",lemp->errsym->index); lineno++;
|
|
|
+ fprintf(out,"#define YYERRSYMDT yy%d\n",lemp->errsym->dtnum); lineno++;
|
|
|
+ }
|
|
|
+ if( lemp->has_fallback ){
|
|
|
+ fprintf(out,"#define YYFALLBACK 1\n"); lineno++;
|
|
|
+ }
|
|
|
+
|
|
|
+
|
|
|
+ ** table must be computed before generating the YYNSTATE macro because
|
|
|
+ ** we need to know how many states can be eliminated.
|
|
|
+ */
|
|
|
+ ax = (struct axset *) calloc(lemp->nxstate*2, sizeof(ax[0]));
|
|
|
+ if( ax==0 ){
|
|
|
+ fprintf(stderr,"malloc failed\n");
|
|
|
+ exit(1);
|
|
|
+ }
|
|
|
+ for(i=0; i<lemp->nxstate; i++){
|
|
|
+ stp = lemp->sorted[i];
|
|
|
+ ax[i*2].stp = stp;
|
|
|
+ ax[i*2].isTkn = 1;
|
|
|
+ ax[i*2].nAction = stp->nTknAct;
|
|
|
+ ax[i*2+1].stp = stp;
|
|
|
+ ax[i*2+1].isTkn = 0;
|
|
|
+ ax[i*2+1].nAction = stp->nNtAct;
|
|
|
+ }
|
|
|
+ mxTknOfst = mnTknOfst = 0;
|
|
|
+ mxNtOfst = mnNtOfst = 0;
|
|
|
+
|
|
|
+ ** of placing the largest action sets first */
|
|
|
+ for(i=0; i<lemp->nxstate*2; i++) ax[i].iOrder = i;
|
|
|
+ qsort(ax, lemp->nxstate*2, sizeof(ax[0]), axset_compare);
|
|
|
+ pActtab = acttab_alloc(lemp->nsymbol, lemp->nterminal);
|
|
|
+ for(i=0; i<lemp->nxstate*2 && ax[i].nAction>0; i++){
|
|
|
+ stp = ax[i].stp;
|
|
|
+ if( ax[i].isTkn ){
|
|
|
+ for(ap=stp->ap; ap; ap=ap->next){
|
|
|
+ int action;
|
|
|
+ if( ap->sp->index>=lemp->nterminal ) continue;
|
|
|
+ action = compute_action(lemp, ap);
|
|
|
+ if( action<0 ) continue;
|
|
|
+ acttab_action(pActtab, ap->sp->index, action);
|
|
|
+ }
|
|
|
+ stp->iTknOfst = acttab_insert(pActtab, 1);
|
|
|
+ if( stp->iTknOfst<mnTknOfst ) mnTknOfst = stp->iTknOfst;
|
|
|
+ if( stp->iTknOfst>mxTknOfst ) mxTknOfst = stp->iTknOfst;
|
|
|
+ }else{
|
|
|
+ for(ap=stp->ap; ap; ap=ap->next){
|
|
|
+ int action;
|
|
|
+ if( ap->sp->index<lemp->nterminal ) continue;
|
|
|
+ if( ap->sp->index==lemp->nsymbol ) continue;
|
|
|
+ action = compute_action(lemp, ap);
|
|
|
+ if( action<0 ) continue;
|
|
|
+ acttab_action(pActtab, ap->sp->index, action);
|
|
|
+ }
|
|
|
+ stp->iNtOfst = acttab_insert(pActtab, 0);
|
|
|
+ if( stp->iNtOfst<mnNtOfst ) mnNtOfst = stp->iNtOfst;
|
|
|
+ if( stp->iNtOfst>mxNtOfst ) mxNtOfst = stp->iNtOfst;
|
|
|
+ }
|
|
|
+#if 0
|
|
|
+ { int jj, nn;
|
|
|
+ for(jj=nn=0; jj<pActtab->nAction; jj++){
|
|
|
+ if( pActtab->aAction[jj].action<0 ) nn++;
|
|
|
+ }
|
|
|
+ printf("%4d: State %3d %s n: %2d size: %5d freespace: %d\n",
|
|
|
+ i, stp->statenum, ax[i].isTkn ? "Token" : "Var ",
|
|
|
+ ax[i].nAction, pActtab->nAction, nn);
|
|
|
+ }
|
|
|
+#endif
|
|
|
+ }
|
|
|
+ free(ax);
|
|
|
+
|
|
|
+
|
|
|
+ ** optimizations have been applied
|
|
|
+ */
|
|
|
+ for(rp=lemp->rule; rp; rp=rp->next) rp->doesReduce = LEMON_FALSE;
|
|
|
+ for(i=0; i<lemp->nxstate; i++){
|
|
|
+ for(ap=lemp->sorted[i]->ap; ap; ap=ap->next){
|
|
|
+ if( ap->type==REDUCE || ap->type==SHIFTREDUCE ){
|
|
|
+ ap->x.rp->doesReduce = 1;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+
|
|
|
+ ** been computed */
|
|
|
+ fprintf(out,"#define YYNSTATE %d\n",lemp->nxstate); lineno++;
|
|
|
+ fprintf(out,"#define YYNRULE %d\n",lemp->nrule); lineno++;
|
|
|
+ fprintf(out,"#define YYNRULE_WITH_ACTION %d\n",lemp->nruleWithAction);
|
|
|
+ lineno++;
|
|
|
+ fprintf(out,"#define YYNTOKEN %d\n",lemp->nterminal); lineno++;
|
|
|
+ fprintf(out,"#define YY_MAX_SHIFT %d\n",lemp->nxstate-1); lineno++;
|
|
|
+ i = lemp->minShiftReduce;
|
|
|
+ fprintf(out,"#define YY_MIN_SHIFTREDUCE %d\n",i); lineno++;
|
|
|
+ i += lemp->nrule;
|
|
|
+ fprintf(out,"#define YY_MAX_SHIFTREDUCE %d\n", i-1); lineno++;
|
|
|
+ fprintf(out,"#define YY_ERROR_ACTION %d\n", lemp->errAction); lineno++;
|
|
|
+ fprintf(out,"#define YY_ACCEPT_ACTION %d\n", lemp->accAction); lineno++;
|
|
|
+ fprintf(out,"#define YY_NO_ACTION %d\n", lemp->noAction); lineno++;
|
|
|
+ fprintf(out,"#define YY_MIN_REDUCE %d\n", lemp->minReduce); lineno++;
|
|
|
+ i = lemp->minReduce + lemp->nrule;
|
|
|
+ fprintf(out,"#define YY_MAX_REDUCE %d\n", i-1); lineno++;
|
|
|
+ tplt_xfer(lemp->name,in,out,&lineno);
|
|
|
+
|
|
|
+
|
|
|
+ **
|
|
|
+ ** yy_action[] A single table containing all actions.
|
|
|
+ ** yy_lookahead[] A table containing the lookahead for each entry in
|
|
|
+ ** yy_action. Used to detect hash collisions.
|
|
|
+ ** yy_shift_ofst[] For each state, the offset into yy_action for
|
|
|
+ ** shifting terminals.
|
|
|
+ ** yy_reduce_ofst[] For each state, the offset into yy_action for
|
|
|
+ ** shifting non-terminals after a reduce.
|
|
|
+ ** yy_default[] Default action for each state.
|
|
|
+ */
|
|
|
+
|
|
|
+
|
|
|
+ lemp->nactiontab = n = acttab_action_size(pActtab);
|
|
|
+ lemp->tablesize += n*szActionType;
|
|
|
+ fprintf(out,"#define YY_ACTTAB_COUNT (%d)\n", n); lineno++;
|
|
|
+ fprintf(out,"static const YYACTIONTYPE yy_action[] = {\n"); lineno++;
|
|
|
+ for(i=j=0; i<n; i++){
|
|
|
+ int action = acttab_yyaction(pActtab, i);
|
|
|
+ if( action<0 ) action = lemp->noAction;
|
|
|
+ if( j==0 ) fprintf(out," /* %5d */ ", i);
|
|
|
+ fprintf(out, " %4d,", action);
|
|
|
+ if( j==9 || i==n-1 ){
|
|
|
+ fprintf(out, "\n"); lineno++;
|
|
|
+ j = 0;
|
|
|
+ }else{
|
|
|
+ j++;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ fprintf(out, "};\n"); lineno++;
|
|
|
+
|
|
|
+
|
|
|
+ lemp->nlookaheadtab = n = acttab_lookahead_size(pActtab);
|
|
|
+ lemp->tablesize += n*szCodeType;
|
|
|
+ fprintf(out,"static const YYCODETYPE yy_lookahead[] = {\n"); lineno++;
|
|
|
+ for(i=j=0; i<n; i++){
|
|
|
+ int la = acttab_yylookahead(pActtab, i);
|
|
|
+ if( la<0 ) la = lemp->nsymbol;
|
|
|
+ if( j==0 ) fprintf(out," /* %5d */ ", i);
|
|
|
+ fprintf(out, " %4d,", la);
|
|
|
+ if( j==9 ){
|
|
|
+ fprintf(out, "\n"); lineno++;
|
|
|
+ j = 0;
|
|
|
+ }else{
|
|
|
+ j++;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ ** yy_shift_ofst[]+iToken will always be a valid index into the array,
|
|
|
+ ** even for the largest possible value of yy_shift_ofst[] and iToken. */
|
|
|
+ nLookAhead = lemp->nterminal + lemp->nactiontab;
|
|
|
+ while( i<nLookAhead ){
|
|
|
+ if( j==0 ) fprintf(out," /* %5d */ ", i);
|
|
|
+ fprintf(out, " %4d,", lemp->nterminal);
|
|
|
+ if( j==9 ){
|
|
|
+ fprintf(out, "\n"); lineno++;
|
|
|
+ j = 0;
|
|
|
+ }else{
|
|
|
+ j++;
|
|
|
+ }
|
|
|
+ i++;
|
|
|
+ }
|
|
|
+ if( j>0 ){ fprintf(out, "\n"); lineno++; }
|
|
|
+ fprintf(out, "};\n"); lineno++;
|
|
|
+
|
|
|
+
|
|
|
+ n = lemp->nxstate;
|
|
|
+ while( n>0 && lemp->sorted[n-1]->iTknOfst==NO_OFFSET ) n--;
|
|
|
+ fprintf(out, "#define YY_SHIFT_COUNT (%d)\n", n-1); lineno++;
|
|
|
+ fprintf(out, "#define YY_SHIFT_MIN (%d)\n", mnTknOfst); lineno++;
|
|
|
+ fprintf(out, "#define YY_SHIFT_MAX (%d)\n", mxTknOfst); lineno++;
|
|
|
+ fprintf(out, "static const %s yy_shift_ofst[] = {\n",
|
|
|
+ minimum_size_type(mnTknOfst, lemp->nterminal+lemp->nactiontab, &sz));
|
|
|
+ lineno++;
|
|
|
+ lemp->tablesize += n*sz;
|
|
|
+ for(i=j=0; i<n; i++){
|
|
|
+ int ofst;
|
|
|
+ stp = lemp->sorted[i];
|
|
|
+ ofst = stp->iTknOfst;
|
|
|
+ if( ofst==NO_OFFSET ) ofst = lemp->nactiontab;
|
|
|
+ if( j==0 ) fprintf(out," /* %5d */ ", i);
|
|
|
+ fprintf(out, " %4d,", ofst);
|
|
|
+ if( j==9 || i==n-1 ){
|
|
|
+ fprintf(out, "\n"); lineno++;
|
|
|
+ j = 0;
|
|
|
+ }else{
|
|
|
+ j++;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ fprintf(out, "};\n"); lineno++;
|
|
|
+
|
|
|
+
|
|
|
+ n = lemp->nxstate;
|
|
|
+ while( n>0 && lemp->sorted[n-1]->iNtOfst==NO_OFFSET ) n--;
|
|
|
+ fprintf(out, "#define YY_REDUCE_COUNT (%d)\n", n-1); lineno++;
|
|
|
+ fprintf(out, "#define YY_REDUCE_MIN (%d)\n", mnNtOfst); lineno++;
|
|
|
+ fprintf(out, "#define YY_REDUCE_MAX (%d)\n", mxNtOfst); lineno++;
|
|
|
+ fprintf(out, "static const %s yy_reduce_ofst[] = {\n",
|
|
|
+ minimum_size_type(mnNtOfst-1, mxNtOfst, &sz)); lineno++;
|
|
|
+ lemp->tablesize += n*sz;
|
|
|
+ for(i=j=0; i<n; i++){
|
|
|
+ int ofst;
|
|
|
+ stp = lemp->sorted[i];
|
|
|
+ ofst = stp->iNtOfst;
|
|
|
+ if( ofst==NO_OFFSET ) ofst = mnNtOfst - 1;
|
|
|
+ if( j==0 ) fprintf(out," /* %5d */ ", i);
|
|
|
+ fprintf(out, " %4d,", ofst);
|
|
|
+ if( j==9 || i==n-1 ){
|
|
|
+ fprintf(out, "\n"); lineno++;
|
|
|
+ j = 0;
|
|
|
+ }else{
|
|
|
+ j++;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ fprintf(out, "};\n"); lineno++;
|
|
|
+
|
|
|
+
|
|
|
+ fprintf(out, "static const YYACTIONTYPE yy_default[] = {\n"); lineno++;
|
|
|
+ n = lemp->nxstate;
|
|
|
+ lemp->tablesize += n*szActionType;
|
|
|
+ for(i=j=0; i<n; i++){
|
|
|
+ stp = lemp->sorted[i];
|
|
|
+ if( j==0 ) fprintf(out," /* %5d */ ", i);
|
|
|
+ if( stp->iDfltReduce<0 ){
|
|
|
+ fprintf(out, " %4d,", lemp->errAction);
|
|
|
+ }else{
|
|
|
+ fprintf(out, " %4d,", stp->iDfltReduce + lemp->minReduce);
|
|
|
+ }
|
|
|
+ if( j==9 || i==n-1 ){
|
|
|
+ fprintf(out, "\n"); lineno++;
|
|
|
+ j = 0;
|
|
|
+ }else{
|
|
|
+ j++;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ fprintf(out, "};\n"); lineno++;
|
|
|
+ tplt_xfer(lemp->name,in,out,&lineno);
|
|
|
+
|
|
|
+
|
|
|
+ */
|
|
|
+ if( lemp->has_fallback ){
|
|
|
+ int mx = lemp->nterminal - 1;
|
|
|
+
|
|
|
+ ** having to do a range check on the index */
|
|
|
+
|
|
|
+ lemp->tablesize += (mx+1)*szCodeType;
|
|
|
+ for(i=0; i<=mx; i++){
|
|
|
+ struct symbol *p = lemp->symbols[i];
|
|
|
+ if( p->fallback==0 ){
|
|
|
+ fprintf(out, " 0, /* %10s => nothing */\n", p->name);
|
|
|
+ }else{
|
|
|
+ fprintf(out, " %3d, /* %10s => %s */\n", p->fallback->index,
|
|
|
+ p->name, p->fallback->name);
|
|
|
+ }
|
|
|
+ lineno++;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ tplt_xfer(lemp->name, in, out, &lineno);
|
|
|
+
|
|
|
+
|
|
|
+ */
|
|
|
+ for(i=0; i<lemp->nsymbol; i++){
|
|
|
+ fprintf(out," /* %4d */ \"%s\",\n",i, lemp->symbols[i]->name); lineno++;
|
|
|
+ }
|
|
|
+ tplt_xfer(lemp->name,in,out,&lineno);
|
|
|
+
|
|
|
+
|
|
|
+ ** rule in the rule set of the grammar. This information is used
|
|
|
+ ** when tracing REDUCE actions.
|
|
|
+ */
|
|
|
+ for(i=0, rp=lemp->rule; rp; rp=rp->next, i++){
|
|
|
+ assert( rp->iRule==i );
|
|
|
+ fprintf(out," /* %3d */ \"", i);
|
|
|
+ writeRuleText(out, rp);
|
|
|
+ fprintf(out,"\",\n"); lineno++;
|
|
|
+ }
|
|
|
+ tplt_xfer(lemp->name,in,out,&lineno);
|
|
|
+
|
|
|
+
|
|
|
+ ** the stack while processing errors or while destroying the parser.
|
|
|
+ ** (In other words, generate the %destructor actions)
|
|
|
+ */
|
|
|
+ if( lemp->tokendest ){
|
|
|
+ int once = 1;
|
|
|
+ for(i=0; i<lemp->nsymbol; i++){
|
|
|
+ struct symbol *sp = lemp->symbols[i];
|
|
|
+ if( sp==0 || sp->type!=TERMINAL ) continue;
|
|
|
+ if( once ){
|
|
|
+ fprintf(out, " /* TERMINAL Destructor */\n"); lineno++;
|
|
|
+ once = 0;
|
|
|
+ }
|
|
|
+ fprintf(out," case %d: /* %s */\n", sp->index, sp->name); lineno++;
|
|
|
+ }
|
|
|
+ for(i=0; i<lemp->nsymbol && lemp->symbols[i]->type!=TERMINAL; i++);
|
|
|
+ if( i<lemp->nsymbol ){
|
|
|
+ emit_destructor_code(out,lemp->symbols[i],lemp,&lineno);
|
|
|
+ fprintf(out," break;\n"); lineno++;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ if( lemp->vardest ){
|
|
|
+ struct symbol *dflt_sp = 0;
|
|
|
+ int once = 1;
|
|
|
+ for(i=0; i<lemp->nsymbol; i++){
|
|
|
+ struct symbol *sp = lemp->symbols[i];
|
|
|
+ if( sp==0 || sp->type==TERMINAL ||
|
|
|
+ sp->index<=0 || sp->destructor!=0 ) continue;
|
|
|
+ if( once ){
|
|
|
+ fprintf(out, " /* Default NON-TERMINAL Destructor */\n");lineno++;
|
|
|
+ once = 0;
|
|
|
+ }
|
|
|
+ fprintf(out," case %d: /* %s */\n", sp->index, sp->name); lineno++;
|
|
|
+ dflt_sp = sp;
|
|
|
+ }
|
|
|
+ if( dflt_sp!=0 ){
|
|
|
+ emit_destructor_code(out,dflt_sp,lemp,&lineno);
|
|
|
+ }
|
|
|
+ fprintf(out," break;\n"); lineno++;
|
|
|
+ }
|
|
|
+ for(i=0; i<lemp->nsymbol; i++){
|
|
|
+ struct symbol *sp = lemp->symbols[i];
|
|
|
+ if( sp==0 || sp->type==TERMINAL || sp->destructor==0 ) continue;
|
|
|
+ if( sp->destLineno<0 ) continue;
|
|
|
+ fprintf(out," case %d: /* %s */\n", sp->index, sp->name); lineno++;
|
|
|
+
|
|
|
+
|
|
|
+ for(j=i+1; j<lemp->nsymbol; j++){
|
|
|
+ struct symbol *sp2 = lemp->symbols[j];
|
|
|
+ if( sp2 && sp2->type!=TERMINAL && sp2->destructor
|
|
|
+ && sp2->dtnum==sp->dtnum
|
|
|
+ && strcmp(sp->destructor,sp2->destructor)==0 ){
|
|
|
+ fprintf(out," case %d: /* %s */\n",
|
|
|
+ sp2->index, sp2->name); lineno++;
|
|
|
+ sp2->destLineno = -1;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ emit_destructor_code(out,lemp->symbols[i],lemp,&lineno);
|
|
|
+ fprintf(out," break;\n"); lineno++;
|
|
|
+ }
|
|
|
+ tplt_xfer(lemp->name,in,out,&lineno);
|
|
|
+
|
|
|
+
|
|
|
+ tplt_print(out,lemp,lemp->overflow,&lineno);
|
|
|
+ tplt_xfer(lemp->name,in,out,&lineno);
|
|
|
+
|
|
|
+
|
|
|
+ ** yyRuleInfoNRhs[].
|
|
|
+ **
|
|
|
+ ** Note: This code depends on the fact that rules are number
|
|
|
+ ** sequentially beginning with 0.
|
|
|
+ */
|
|
|
+ for(i=0, rp=lemp->rule; rp; rp=rp->next, i++){
|
|
|
+ fprintf(out," %4d, /* (%d) ", rp->lhs->index, i);
|
|
|
+ rule_print(out, rp);
|
|
|
+ fprintf(out," */\n"); lineno++;
|
|
|
+ }
|
|
|
+ tplt_xfer(lemp->name,in,out,&lineno);
|
|
|
+ for(i=0, rp=lemp->rule; rp; rp=rp->next, i++){
|
|
|
+ fprintf(out," %3d, /* (%d) ", -rp->nrhs, i);
|
|
|
+ rule_print(out, rp);
|
|
|
+ fprintf(out," */\n"); lineno++;
|
|
|
+ }
|
|
|
+ tplt_xfer(lemp->name,in,out,&lineno);
|
|
|
+
|
|
|
+
|
|
|
+ i = 0;
|
|
|
+ for(rp=lemp->rule; rp; rp=rp->next){
|
|
|
+ i += translate_code(lemp, rp);
|
|
|
+ }
|
|
|
+ if( i ){
|
|
|
+ fprintf(out," YYMINORTYPE yylhsminor;\n"); lineno++;
|
|
|
+ }
|
|
|
+
|
|
|
+ for(rp=lemp->rule; rp; rp=rp->next){
|
|
|
+ struct rule *rp2;
|
|
|
+ if( rp->codeEmitted ) continue;
|
|
|
+ if( rp->noCode ){
|
|
|
+
|
|
|
+ continue;
|
|
|
+ }
|
|
|
+ fprintf(out," case %d: /* ", rp->iRule);
|
|
|
+ writeRuleText(out, rp);
|
|
|
+ fprintf(out, " */\n"); lineno++;
|
|
|
+ for(rp2=rp->next; rp2; rp2=rp2->next){
|
|
|
+ if( rp2->code==rp->code && rp2->codePrefix==rp->codePrefix
|
|
|
+ && rp2->codeSuffix==rp->codeSuffix ){
|
|
|
+ fprintf(out," case %d: /* ", rp2->iRule);
|
|
|
+ writeRuleText(out, rp2);
|
|
|
+ fprintf(out," */ yytestcase(yyruleno==%d);\n", rp2->iRule); lineno++;
|
|
|
+ rp2->codeEmitted = 1;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ emit_code(out,rp,lemp,&lineno);
|
|
|
+ fprintf(out," break;\n"); lineno++;
|
|
|
+ rp->codeEmitted = 1;
|
|
|
+ }
|
|
|
+
|
|
|
+ ** empty actions. */
|
|
|
+ fprintf(out," default:\n"); lineno++;
|
|
|
+ for(rp=lemp->rule; rp; rp=rp->next){
|
|
|
+ if( rp->codeEmitted ) continue;
|
|
|
+ assert( rp->noCode );
|
|
|
+ fprintf(out," /* (%d) ", rp->iRule);
|
|
|
+ writeRuleText(out, rp);
|
|
|
+ if( rp->neverReduce ){
|
|
|
+ fprintf(out, " (NEVER REDUCES) */ assert(yyruleno!=%d);\n",
|
|
|
+ rp->iRule); lineno++;
|
|
|
+ }else if( rp->doesReduce ){
|
|
|
+ fprintf(out, " */ yytestcase(yyruleno==%d);\n", rp->iRule); lineno++;
|
|
|
+ }else{
|
|
|
+ fprintf(out, " (OPTIMIZED OUT) */ assert(yyruleno!=%d);\n",
|
|
|
+ rp->iRule); lineno++;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ fprintf(out," break;\n"); lineno++;
|
|
|
+ tplt_xfer(lemp->name,in,out,&lineno);
|
|
|
+
|
|
|
+
|
|
|
+ tplt_print(out,lemp,lemp->failure,&lineno);
|
|
|
+ tplt_xfer(lemp->name,in,out,&lineno);
|
|
|
+
|
|
|
+
|
|
|
+ tplt_print(out,lemp,lemp->error,&lineno);
|
|
|
+ tplt_xfer(lemp->name,in,out,&lineno);
|
|
|
+
|
|
|
+
|
|
|
+ tplt_print(out,lemp,lemp->accept,&lineno);
|
|
|
+ tplt_xfer(lemp->name,in,out,&lineno);
|
|
|
+
|
|
|
+
|
|
|
+ tplt_print(out,lemp,lemp->extracode,&lineno);
|
|
|
+
|
|
|
+ acttab_free(pActtab);
|
|
|
+ fclose(in);
|
|
|
+ fclose(out);
|
|
|
+ if( sql ) fclose(sql);
|
|
|
+ return;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+void ReportHeader(struct lemon *lemp)
|
|
|
+{
|
|
|
+ FILE *out, *in;
|
|
|
+ const char *prefix;
|
|
|
+ char line[LINESIZE];
|
|
|
+ char pattern[LINESIZE];
|
|
|
+ int i;
|
|
|
+
|
|
|
+ if( lemp->tokenprefix ) prefix = lemp->tokenprefix;
|
|
|
+ else prefix = "";
|
|
|
+ in = file_open(lemp,".h","rb");
|
|
|
+ if( in ){
|
|
|
+ int nextChar;
|
|
|
+ for(i=1; i<lemp->nterminal && fgets(line,LINESIZE,in); i++){
|
|
|
+ lemon_sprintf(pattern,"#define %s%-30s %3d\n",
|
|
|
+ prefix,lemp->symbols[i]->name,i);
|
|
|
+ if( strcmp(line,pattern) ) break;
|
|
|
+ }
|
|
|
+ nextChar = fgetc(in);
|
|
|
+ fclose(in);
|
|
|
+ if( i==lemp->nterminal && nextChar==EOF ){
|
|
|
+
|
|
|
+ return;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ out = file_open(lemp,".h","wb");
|
|
|
+ if( out ){
|
|
|
+ for(i=1; i<lemp->nterminal; i++){
|
|
|
+ fprintf(out,"#define %s%-30s %3d\n",prefix,lemp->symbols[i]->name,i);
|
|
|
+ }
|
|
|
+ fclose(out);
|
|
|
+ }
|
|
|
+ return;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+** of defaults.
|
|
|
+**
|
|
|
+** In this version, we take the most frequent REDUCE action and make
|
|
|
+** it the default. Except, there is no default if the wildcard token
|
|
|
+** is a possible look-ahead.
|
|
|
+*/
|
|
|
+void CompressTables(struct lemon *lemp)
|
|
|
+{
|
|
|
+ struct state *stp;
|
|
|
+ struct action *ap, *ap2, *nextap;
|
|
|
+ struct rule *rp, *rp2, *rbest;
|
|
|
+ int nbest, n;
|
|
|
+ int i;
|
|
|
+ int usesWildcard;
|
|
|
+
|
|
|
+ for(i=0; i<lemp->nstate; i++){
|
|
|
+ stp = lemp->sorted[i];
|
|
|
+ nbest = 0;
|
|
|
+ rbest = 0;
|
|
|
+ usesWildcard = 0;
|
|
|
+
|
|
|
+ for(ap=stp->ap; ap; ap=ap->next){
|
|
|
+ if( ap->type==SHIFT && ap->sp==lemp->wildcard ){
|
|
|
+ usesWildcard = 1;
|
|
|
+ }
|
|
|
+ if( ap->type!=REDUCE ) continue;
|
|
|
+ rp = ap->x.rp;
|
|
|
+ if( rp->lhsStart ) continue;
|
|
|
+ if( rp==rbest ) continue;
|
|
|
+ n = 1;
|
|
|
+ for(ap2=ap->next; ap2; ap2=ap2->next){
|
|
|
+ if( ap2->type!=REDUCE ) continue;
|
|
|
+ rp2 = ap2->x.rp;
|
|
|
+ if( rp2==rbest ) continue;
|
|
|
+ if( rp2==rp ) n++;
|
|
|
+ }
|
|
|
+ if( n>nbest ){
|
|
|
+ nbest = n;
|
|
|
+ rbest = rp;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+
|
|
|
+ ** is not at least 1 or if the wildcard token is a possible
|
|
|
+ ** lookahead.
|
|
|
+ */
|
|
|
+ if( nbest<1 || usesWildcard ) continue;
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+ for(ap=stp->ap; ap; ap=ap->next){
|
|
|
+ if( ap->type==REDUCE && ap->x.rp==rbest ) break;
|
|
|
+ }
|
|
|
+ assert( ap );
|
|
|
+ ap->sp = Symbol_new("{default}");
|
|
|
+ for(ap=ap->next; ap; ap=ap->next){
|
|
|
+ if( ap->type==REDUCE && ap->x.rp==rbest ) ap->type = NOT_USED;
|
|
|
+ }
|
|
|
+ stp->ap = Action_sort(stp->ap);
|
|
|
+
|
|
|
+ for(ap=stp->ap; ap; ap=ap->next){
|
|
|
+ if( ap->type==SHIFT ) break;
|
|
|
+ if( ap->type==REDUCE && ap->x.rp!=rbest ) break;
|
|
|
+ }
|
|
|
+ if( ap==0 ){
|
|
|
+ stp->autoReduce = 1;
|
|
|
+ stp->pDfltReduce = rbest;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+
|
|
|
+ ** every action that is a SHIFT to an autoReduce state into
|
|
|
+ ** a SHIFTREDUCE action.
|
|
|
+ */
|
|
|
+ for(i=0; i<lemp->nstate; i++){
|
|
|
+ stp = lemp->sorted[i];
|
|
|
+ for(ap=stp->ap; ap; ap=ap->next){
|
|
|
+ struct state *pNextState;
|
|
|
+ if( ap->type!=SHIFT ) continue;
|
|
|
+ pNextState = ap->x.stp;
|
|
|
+ if( pNextState->autoReduce && pNextState->pDfltReduce!=0 ){
|
|
|
+ ap->type = SHIFTREDUCE;
|
|
|
+ ap->x.rp = pNextState->pDfltReduce;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+
|
|
|
+ ** (meaning that the SHIFTREDUCE will land back in the state where it
|
|
|
+ ** started) and if there is no C-code associated with the reduce action,
|
|
|
+ ** then we can go ahead and convert the action to be the same as the
|
|
|
+ ** action for the RHS of the rule.
|
|
|
+ */
|
|
|
+ for(i=0; i<lemp->nstate; i++){
|
|
|
+ stp = lemp->sorted[i];
|
|
|
+ for(ap=stp->ap; ap; ap=nextap){
|
|
|
+ nextap = ap->next;
|
|
|
+ if( ap->type!=SHIFTREDUCE ) continue;
|
|
|
+ rp = ap->x.rp;
|
|
|
+ if( rp->noCode==0 ) continue;
|
|
|
+ if( rp->nrhs!=1 ) continue;
|
|
|
+#if 1
|
|
|
+
|
|
|
+ ** apply it to terminal symbols too, but that makes the parser tables
|
|
|
+ ** larger. */
|
|
|
+ if( ap->sp->index<lemp->nterminal ) continue;
|
|
|
+#endif
|
|
|
+
|
|
|
+ nextap = ap;
|
|
|
+ for(ap2=stp->ap; ap2 && (ap2==ap || ap2->sp!=rp->lhs); ap2=ap2->next){}
|
|
|
+ assert( ap2!=0 );
|
|
|
+ ap->spOpt = ap2->sp;
|
|
|
+ ap->type = ap2->type;
|
|
|
+ ap->x = ap2->x;
|
|
|
+ }
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+** Compare two states for sorting purposes. The smaller state is the
|
|
|
+** one with the most non-terminal actions. If they have the same number
|
|
|
+** of non-terminal actions, then the smaller is the one with the most
|
|
|
+** token actions.
|
|
|
+*/
|
|
|
+static int stateResortCompare(const void *a, const void *b){
|
|
|
+ const struct state *pA = *(const struct state**)a;
|
|
|
+ const struct state *pB = *(const struct state**)b;
|
|
|
+ int n;
|
|
|
+
|
|
|
+ n = pB->nNtAct - pA->nNtAct;
|
|
|
+ if( n==0 ){
|
|
|
+ n = pB->nTknAct - pA->nTknAct;
|
|
|
+ if( n==0 ){
|
|
|
+ n = pB->statenum - pA->statenum;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ assert( n!=0 );
|
|
|
+ return n;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+** Renumber and resort states so that states with fewer choices
|
|
|
+** occur at the end. Except, keep state 0 as the first state.
|
|
|
+*/
|
|
|
+void ResortStates(struct lemon *lemp)
|
|
|
+{
|
|
|
+ int i;
|
|
|
+ struct state *stp;
|
|
|
+ struct action *ap;
|
|
|
+
|
|
|
+ for(i=0; i<lemp->nstate; i++){
|
|
|
+ stp = lemp->sorted[i];
|
|
|
+ stp->nTknAct = stp->nNtAct = 0;
|
|
|
+ stp->iDfltReduce = -1;
|
|
|
+ stp->iTknOfst = NO_OFFSET;
|
|
|
+ stp->iNtOfst = NO_OFFSET;
|
|
|
+ for(ap=stp->ap; ap; ap=ap->next){
|
|
|
+ int iAction = compute_action(lemp,ap);
|
|
|
+ if( iAction>=0 ){
|
|
|
+ if( ap->sp->index<lemp->nterminal ){
|
|
|
+ stp->nTknAct++;
|
|
|
+ }else if( ap->sp->index<lemp->nsymbol ){
|
|
|
+ stp->nNtAct++;
|
|
|
+ }else{
|
|
|
+ assert( stp->autoReduce==0 || stp->pDfltReduce==ap->x.rp );
|
|
|
+ stp->iDfltReduce = iAction;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ qsort(&lemp->sorted[1], lemp->nstate-1, sizeof(lemp->sorted[0]),
|
|
|
+ stateResortCompare);
|
|
|
+ for(i=0; i<lemp->nstate; i++){
|
|
|
+ lemp->sorted[i]->statenum = i;
|
|
|
+ }
|
|
|
+ lemp->nxstate = lemp->nstate;
|
|
|
+ while( lemp->nxstate>1 && lemp->sorted[lemp->nxstate-1]->autoReduce ){
|
|
|
+ lemp->nxstate--;
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+
|
|
|
+** Set manipulation routines for the LEMON parser generator.
|
|
|
+*/
|
|
|
+
|
|
|
+static int size = 0;
|
|
|
+
|
|
|
+
|
|
|
+void SetSize(int n)
|
|
|
+{
|
|
|
+ size = n+1;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+char *SetNew(void){
|
|
|
+ char *s;
|
|
|
+ s = (char*)calloc( size, 1);
|
|
|
+ if( s==0 ){
|
|
|
+ memory_error();
|
|
|
+ }
|
|
|
+ return s;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+void SetFree(char *s)
|
|
|
+{
|
|
|
+ free(s);
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+** and FALSE if it was already there. */
|
|
|
+int SetAdd(char *s, int e)
|
|
|
+{
|
|
|
+ int rv;
|
|
|
+ assert( e>=0 && e<size );
|
|
|
+ rv = s[e];
|
|
|
+ s[e] = 1;
|
|
|
+ return !rv;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+int SetUnion(char *s1, char *s2)
|
|
|
+{
|
|
|
+ int i, progress;
|
|
|
+ progress = 0;
|
|
|
+ for(i=0; i<size; i++){
|
|
|
+ if( s2[i]==0 ) continue;
|
|
|
+ if( s1[i]==0 ){
|
|
|
+ progress = 1;
|
|
|
+ s1[i] = 1;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ return progress;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+** All code in this file has been automatically generated
|
|
|
+** from a specification in the file
|
|
|
+** "table.q"
|
|
|
+** by the associative array code building program "aagen".
|
|
|
+** Do not edit this file! Instead, edit the specification
|
|
|
+** file, then rerun aagen.
|
|
|
+*/
|
|
|
+
|
|
|
+** Code for processing tables in the LEMON parser generator.
|
|
|
+*/
|
|
|
+
|
|
|
+PRIVATE unsigned strhash(const char *x)
|
|
|
+{
|
|
|
+ unsigned h = 0;
|
|
|
+ while( *x ) h = h*13 + *(x++);
|
|
|
+ return h;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+** keep strings in a table so that the same string is not in more
|
|
|
+** than one place.
|
|
|
+*/
|
|
|
+const char *Strsafe(const char *y)
|
|
|
+{
|
|
|
+ const char *z;
|
|
|
+ char *cpy;
|
|
|
+
|
|
|
+ if( y==0 ) return 0;
|
|
|
+ z = Strsafe_find(y);
|
|
|
+ if( z==0 && (cpy=(char *)malloc( lemonStrlen(y)+1 ))!=0 ){
|
|
|
+ lemon_strcpy(cpy,y);
|
|
|
+ z = cpy;
|
|
|
+ Strsafe_insert(z);
|
|
|
+ }
|
|
|
+ MemoryCheck(z);
|
|
|
+ return z;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+** associative array of type "x1".
|
|
|
+*/
|
|
|
+struct s_x1 {
|
|
|
+ int size;
|
|
|
+
|
|
|
+
|
|
|
+ int count;
|
|
|
+ struct s_x1node *tbl;
|
|
|
+ struct s_x1node **ht;
|
|
|
+};
|
|
|
+
|
|
|
+
|
|
|
+** in an associative array of type "x1".
|
|
|
+*/
|
|
|
+typedef struct s_x1node {
|
|
|
+ const char *data;
|
|
|
+ struct s_x1node *next;
|
|
|
+ struct s_x1node **from;
|
|
|
+} x1node;
|
|
|
+
|
|
|
+
|
|
|
+static struct s_x1 *x1a;
|
|
|
+
|
|
|
+
|
|
|
+void Strsafe_init(void){
|
|
|
+ if( x1a ) return;
|
|
|
+ x1a = (struct s_x1*)malloc( sizeof(struct s_x1) );
|
|
|
+ if( x1a ){
|
|
|
+ x1a->size = 1024;
|
|
|
+ x1a->count = 0;
|
|
|
+ x1a->tbl = (x1node*)calloc(1024, sizeof(x1node) + sizeof(x1node*));
|
|
|
+ if( x1a->tbl==0 ){
|
|
|
+ free(x1a);
|
|
|
+ x1a = 0;
|
|
|
+ }else{
|
|
|
+ int i;
|
|
|
+ x1a->ht = (x1node**)&(x1a->tbl[1024]);
|
|
|
+ for(i=0; i<1024; i++) x1a->ht[i] = 0;
|
|
|
+ }
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+** Prior data with the same key is NOT overwritten */
|
|
|
+int Strsafe_insert(const char *data)
|
|
|
+{
|
|
|
+ x1node *np;
|
|
|
+ unsigned h;
|
|
|
+ unsigned ph;
|
|
|
+
|
|
|
+ if( x1a==0 ) return 0;
|
|
|
+ ph = strhash(data);
|
|
|
+ h = ph & (x1a->size-1);
|
|
|
+ np = x1a->ht[h];
|
|
|
+ while( np ){
|
|
|
+ if( strcmp(np->data,data)==0 ){
|
|
|
+
|
|
|
+
|
|
|
+ return 0;
|
|
|
+ }
|
|
|
+ np = np->next;
|
|
|
+ }
|
|
|
+ if( x1a->count>=x1a->size ){
|
|
|
+
|
|
|
+ int i,arrSize;
|
|
|
+ struct s_x1 array;
|
|
|
+ array.size = arrSize = x1a->size*2;
|
|
|
+ array.count = x1a->count;
|
|
|
+ array.tbl = (x1node*)calloc(arrSize, sizeof(x1node) + sizeof(x1node*));
|
|
|
+ if( array.tbl==0 ) return 0;
|
|
|
+ array.ht = (x1node**)&(array.tbl[arrSize]);
|
|
|
+ for(i=0; i<arrSize; i++) array.ht[i] = 0;
|
|
|
+ for(i=0; i<x1a->count; i++){
|
|
|
+ x1node *oldnp, *newnp;
|
|
|
+ oldnp = &(x1a->tbl[i]);
|
|
|
+ h = strhash(oldnp->data) & (arrSize-1);
|
|
|
+ newnp = &(array.tbl[i]);
|
|
|
+ if( array.ht[h] ) array.ht[h]->from = &(newnp->next);
|
|
|
+ newnp->next = array.ht[h];
|
|
|
+ newnp->data = oldnp->data;
|
|
|
+ newnp->from = &(array.ht[h]);
|
|
|
+ array.ht[h] = newnp;
|
|
|
+ }
|
|
|
+
|
|
|
+ ** Don't worry about freeing memory on modern platforms. */
|
|
|
+ *x1a = array;
|
|
|
+ }
|
|
|
+
|
|
|
+ h = ph & (x1a->size-1);
|
|
|
+ np = &(x1a->tbl[x1a->count++]);
|
|
|
+ np->data = data;
|
|
|
+ if( x1a->ht[h] ) x1a->ht[h]->from = &(np->next);
|
|
|
+ np->next = x1a->ht[h];
|
|
|
+ x1a->ht[h] = np;
|
|
|
+ np->from = &(x1a->ht[h]);
|
|
|
+ return 1;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+** if no such key. */
|
|
|
+const char *Strsafe_find(const char *key)
|
|
|
+{
|
|
|
+ unsigned h;
|
|
|
+ x1node *np;
|
|
|
+
|
|
|
+ if( x1a==0 ) return 0;
|
|
|
+ h = strhash(key) & (x1a->size-1);
|
|
|
+ np = x1a->ht[h];
|
|
|
+ while( np ){
|
|
|
+ if( strcmp(np->data,key)==0 ) break;
|
|
|
+ np = np->next;
|
|
|
+ }
|
|
|
+ return np ? np->data : 0;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+** Create a new symbol if this is the first time "x" has been seen.
|
|
|
+*/
|
|
|
+struct symbol *Symbol_new(const char *x)
|
|
|
+{
|
|
|
+ struct symbol *sp;
|
|
|
+
|
|
|
+ sp = Symbol_find(x);
|
|
|
+ if( sp==0 ){
|
|
|
+ sp = (struct symbol *)calloc(1, sizeof(struct symbol) );
|
|
|
+ MemoryCheck(sp);
|
|
|
+ sp->name = Strsafe(x);
|
|
|
+ sp->type = ISUPPER(*x) ? TERMINAL : NONTERMINAL;
|
|
|
+ sp->rule = 0;
|
|
|
+ sp->fallback = 0;
|
|
|
+ sp->prec = -1;
|
|
|
+ sp->assoc = UNK;
|
|
|
+ sp->firstset = 0;
|
|
|
+ sp->lambda = LEMON_FALSE;
|
|
|
+ sp->destructor = 0;
|
|
|
+ sp->destLineno = 0;
|
|
|
+ sp->datatype = 0;
|
|
|
+ sp->useCnt = 0;
|
|
|
+ Symbol_insert(sp,sp->name);
|
|
|
+ }
|
|
|
+ sp->useCnt++;
|
|
|
+ return sp;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+** zero, or positive if a is less then, equal to, or greater
|
|
|
+** than b.
|
|
|
+**
|
|
|
+** Symbols that begin with upper case letters (terminals or tokens)
|
|
|
+** must sort before symbols that begin with lower case letters
|
|
|
+** (non-terminals). And MULTITERMINAL symbols (created using the
|
|
|
+** %token_class directive) must sort at the very end. Other than
|
|
|
+** that, the order does not matter.
|
|
|
+**
|
|
|
+** We find experimentally that leaving the symbols in their original
|
|
|
+** order (the order they appeared in the grammar file) gives the
|
|
|
+** smallest parser tables in SQLite.
|
|
|
+*/
|
|
|
+int Symbolcmpp(const void *_a, const void *_b)
|
|
|
+{
|
|
|
+ const struct symbol *a = *(const struct symbol **) _a;
|
|
|
+ const struct symbol *b = *(const struct symbol **) _b;
|
|
|
+ int i1 = a->type==MULTITERMINAL ? 3 : a->name[0]>'Z' ? 2 : 1;
|
|
|
+ int i2 = b->type==MULTITERMINAL ? 3 : b->name[0]>'Z' ? 2 : 1;
|
|
|
+ return i1==i2 ? a->index - b->index : i1 - i2;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+** associative array of type "x2".
|
|
|
+*/
|
|
|
+struct s_x2 {
|
|
|
+ int size;
|
|
|
+
|
|
|
+
|
|
|
+ int count;
|
|
|
+ struct s_x2node *tbl;
|
|
|
+ struct s_x2node **ht;
|
|
|
+};
|
|
|
+
|
|
|
+
|
|
|
+** in an associative array of type "x2".
|
|
|
+*/
|
|
|
+typedef struct s_x2node {
|
|
|
+ struct symbol *data;
|
|
|
+ const char *key;
|
|
|
+ struct s_x2node *next;
|
|
|
+ struct s_x2node **from;
|
|
|
+} x2node;
|
|
|
+
|
|
|
+
|
|
|
+static struct s_x2 *x2a;
|
|
|
+
|
|
|
+
|
|
|
+void Symbol_init(void){
|
|
|
+ if( x2a ) return;
|
|
|
+ x2a = (struct s_x2*)malloc( sizeof(struct s_x2) );
|
|
|
+ if( x2a ){
|
|
|
+ x2a->size = 128;
|
|
|
+ x2a->count = 0;
|
|
|
+ x2a->tbl = (x2node*)calloc(128, sizeof(x2node) + sizeof(x2node*));
|
|
|
+ if( x2a->tbl==0 ){
|
|
|
+ free(x2a);
|
|
|
+ x2a = 0;
|
|
|
+ }else{
|
|
|
+ int i;
|
|
|
+ x2a->ht = (x2node**)&(x2a->tbl[128]);
|
|
|
+ for(i=0; i<128; i++) x2a->ht[i] = 0;
|
|
|
+ }
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+** Prior data with the same key is NOT overwritten */
|
|
|
+int Symbol_insert(struct symbol *data, const char *key)
|
|
|
+{
|
|
|
+ x2node *np;
|
|
|
+ unsigned h;
|
|
|
+ unsigned ph;
|
|
|
+
|
|
|
+ if( x2a==0 ) return 0;
|
|
|
+ ph = strhash(key);
|
|
|
+ h = ph & (x2a->size-1);
|
|
|
+ np = x2a->ht[h];
|
|
|
+ while( np ){
|
|
|
+ if( strcmp(np->key,key)==0 ){
|
|
|
+
|
|
|
+
|
|
|
+ return 0;
|
|
|
+ }
|
|
|
+ np = np->next;
|
|
|
+ }
|
|
|
+ if( x2a->count>=x2a->size ){
|
|
|
+
|
|
|
+ int i,arrSize;
|
|
|
+ struct s_x2 array;
|
|
|
+ array.size = arrSize = x2a->size*2;
|
|
|
+ array.count = x2a->count;
|
|
|
+ array.tbl = (x2node*)calloc(arrSize, sizeof(x2node) + sizeof(x2node*));
|
|
|
+ if( array.tbl==0 ) return 0;
|
|
|
+ array.ht = (x2node**)&(array.tbl[arrSize]);
|
|
|
+ for(i=0; i<arrSize; i++) array.ht[i] = 0;
|
|
|
+ for(i=0; i<x2a->count; i++){
|
|
|
+ x2node *oldnp, *newnp;
|
|
|
+ oldnp = &(x2a->tbl[i]);
|
|
|
+ h = strhash(oldnp->key) & (arrSize-1);
|
|
|
+ newnp = &(array.tbl[i]);
|
|
|
+ if( array.ht[h] ) array.ht[h]->from = &(newnp->next);
|
|
|
+ newnp->next = array.ht[h];
|
|
|
+ newnp->key = oldnp->key;
|
|
|
+ newnp->data = oldnp->data;
|
|
|
+ newnp->from = &(array.ht[h]);
|
|
|
+ array.ht[h] = newnp;
|
|
|
+ }
|
|
|
+
|
|
|
+ ** machines. Don't worry about freeing this trivial amount of memory
|
|
|
+ ** on modern platforms. Just leak it. */
|
|
|
+ *x2a = array;
|
|
|
+ }
|
|
|
+
|
|
|
+ h = ph & (x2a->size-1);
|
|
|
+ np = &(x2a->tbl[x2a->count++]);
|
|
|
+ np->key = key;
|
|
|
+ np->data = data;
|
|
|
+ if( x2a->ht[h] ) x2a->ht[h]->from = &(np->next);
|
|
|
+ np->next = x2a->ht[h];
|
|
|
+ x2a->ht[h] = np;
|
|
|
+ np->from = &(x2a->ht[h]);
|
|
|
+ return 1;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+** if no such key. */
|
|
|
+struct symbol *Symbol_find(const char *key)
|
|
|
+{
|
|
|
+ unsigned h;
|
|
|
+ x2node *np;
|
|
|
+
|
|
|
+ if( x2a==0 ) return 0;
|
|
|
+ h = strhash(key) & (x2a->size-1);
|
|
|
+ np = x2a->ht[h];
|
|
|
+ while( np ){
|
|
|
+ if( strcmp(np->key,key)==0 ) break;
|
|
|
+ np = np->next;
|
|
|
+ }
|
|
|
+ return np ? np->data : 0;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+struct symbol *Symbol_Nth(int n)
|
|
|
+{
|
|
|
+ struct symbol *data;
|
|
|
+ if( x2a && n>0 && n<=x2a->count ){
|
|
|
+ data = x2a->tbl[n-1].data;
|
|
|
+ }else{
|
|
|
+ data = 0;
|
|
|
+ }
|
|
|
+ return data;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+int Symbol_count()
|
|
|
+{
|
|
|
+ return x2a ? x2a->count : 0;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+** The array is obtained from malloc. Return NULL if memory allocation
|
|
|
+** problems, or if the array is empty. */
|
|
|
+struct symbol **Symbol_arrayof()
|
|
|
+{
|
|
|
+ struct symbol **array;
|
|
|
+ int i,arrSize;
|
|
|
+ if( x2a==0 ) return 0;
|
|
|
+ arrSize = x2a->count;
|
|
|
+ array = (struct symbol **)calloc(arrSize, sizeof(struct symbol *));
|
|
|
+ if( array ){
|
|
|
+ for(i=0; i<arrSize; i++) array[i] = x2a->tbl[i].data;
|
|
|
+ }
|
|
|
+ return array;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+int Configcmp(const char *_a,const char *_b)
|
|
|
+{
|
|
|
+ const struct config *a = (struct config *) _a;
|
|
|
+ const struct config *b = (struct config *) _b;
|
|
|
+ int x;
|
|
|
+ x = a->rp->index - b->rp->index;
|
|
|
+ if( x==0 ) x = a->dot - b->dot;
|
|
|
+ return x;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+PRIVATE int statecmp(struct config *a, struct config *b)
|
|
|
+{
|
|
|
+ int rc;
|
|
|
+ for(rc=0; rc==0 && a && b; a=a->bp, b=b->bp){
|
|
|
+ rc = a->rp->index - b->rp->index;
|
|
|
+ if( rc==0 ) rc = a->dot - b->dot;
|
|
|
+ }
|
|
|
+ if( rc==0 ){
|
|
|
+ if( a ) rc = 1;
|
|
|
+ if( b ) rc = -1;
|
|
|
+ }
|
|
|
+ return rc;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+PRIVATE unsigned statehash(struct config *a)
|
|
|
+{
|
|
|
+ unsigned h=0;
|
|
|
+ while( a ){
|
|
|
+ h = h*571 + a->rp->index*37 + a->dot;
|
|
|
+ a = a->bp;
|
|
|
+ }
|
|
|
+ return h;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+struct state *State_new()
|
|
|
+{
|
|
|
+ struct state *newstate;
|
|
|
+ newstate = (struct state *)calloc(1, sizeof(struct state) );
|
|
|
+ MemoryCheck(newstate);
|
|
|
+ return newstate;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+** associative array of type "x3".
|
|
|
+*/
|
|
|
+struct s_x3 {
|
|
|
+ int size;
|
|
|
+
|
|
|
+
|
|
|
+ int count;
|
|
|
+ struct s_x3node *tbl;
|
|
|
+ struct s_x3node **ht;
|
|
|
+};
|
|
|
+
|
|
|
+
|
|
|
+** in an associative array of type "x3".
|
|
|
+*/
|
|
|
+typedef struct s_x3node {
|
|
|
+ struct state *data;
|
|
|
+ struct config *key;
|
|
|
+ struct s_x3node *next;
|
|
|
+ struct s_x3node **from;
|
|
|
+} x3node;
|
|
|
+
|
|
|
+
|
|
|
+static struct s_x3 *x3a;
|
|
|
+
|
|
|
+
|
|
|
+void State_init(void){
|
|
|
+ if( x3a ) return;
|
|
|
+ x3a = (struct s_x3*)malloc( sizeof(struct s_x3) );
|
|
|
+ if( x3a ){
|
|
|
+ x3a->size = 128;
|
|
|
+ x3a->count = 0;
|
|
|
+ x3a->tbl = (x3node*)calloc(128, sizeof(x3node) + sizeof(x3node*));
|
|
|
+ if( x3a->tbl==0 ){
|
|
|
+ free(x3a);
|
|
|
+ x3a = 0;
|
|
|
+ }else{
|
|
|
+ int i;
|
|
|
+ x3a->ht = (x3node**)&(x3a->tbl[128]);
|
|
|
+ for(i=0; i<128; i++) x3a->ht[i] = 0;
|
|
|
+ }
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+** Prior data with the same key is NOT overwritten */
|
|
|
+int State_insert(struct state *data, struct config *key)
|
|
|
+{
|
|
|
+ x3node *np;
|
|
|
+ unsigned h;
|
|
|
+ unsigned ph;
|
|
|
+
|
|
|
+ if( x3a==0 ) return 0;
|
|
|
+ ph = statehash(key);
|
|
|
+ h = ph & (x3a->size-1);
|
|
|
+ np = x3a->ht[h];
|
|
|
+ while( np ){
|
|
|
+ if( statecmp(np->key,key)==0 ){
|
|
|
+
|
|
|
+
|
|
|
+ return 0;
|
|
|
+ }
|
|
|
+ np = np->next;
|
|
|
+ }
|
|
|
+ if( x3a->count>=x3a->size ){
|
|
|
+
|
|
|
+ int i,arrSize;
|
|
|
+ struct s_x3 array;
|
|
|
+ array.size = arrSize = x3a->size*2;
|
|
|
+ array.count = x3a->count;
|
|
|
+ array.tbl = (x3node*)calloc(arrSize, sizeof(x3node) + sizeof(x3node*));
|
|
|
+ if( array.tbl==0 ) return 0;
|
|
|
+ array.ht = (x3node**)&(array.tbl[arrSize]);
|
|
|
+ for(i=0; i<arrSize; i++) array.ht[i] = 0;
|
|
|
+ for(i=0; i<x3a->count; i++){
|
|
|
+ x3node *oldnp, *newnp;
|
|
|
+ oldnp = &(x3a->tbl[i]);
|
|
|
+ h = statehash(oldnp->key) & (arrSize-1);
|
|
|
+ newnp = &(array.tbl[i]);
|
|
|
+ if( array.ht[h] ) array.ht[h]->from = &(newnp->next);
|
|
|
+ newnp->next = array.ht[h];
|
|
|
+ newnp->key = oldnp->key;
|
|
|
+ newnp->data = oldnp->data;
|
|
|
+ newnp->from = &(array.ht[h]);
|
|
|
+ array.ht[h] = newnp;
|
|
|
+ }
|
|
|
+ free(x3a->tbl);
|
|
|
+ *x3a = array;
|
|
|
+ }
|
|
|
+
|
|
|
+ h = ph & (x3a->size-1);
|
|
|
+ np = &(x3a->tbl[x3a->count++]);
|
|
|
+ np->key = key;
|
|
|
+ np->data = data;
|
|
|
+ if( x3a->ht[h] ) x3a->ht[h]->from = &(np->next);
|
|
|
+ np->next = x3a->ht[h];
|
|
|
+ x3a->ht[h] = np;
|
|
|
+ np->from = &(x3a->ht[h]);
|
|
|
+ return 1;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+** if no such key. */
|
|
|
+struct state *State_find(struct config *key)
|
|
|
+{
|
|
|
+ unsigned h;
|
|
|
+ x3node *np;
|
|
|
+
|
|
|
+ if( x3a==0 ) return 0;
|
|
|
+ h = statehash(key) & (x3a->size-1);
|
|
|
+ np = x3a->ht[h];
|
|
|
+ while( np ){
|
|
|
+ if( statecmp(np->key,key)==0 ) break;
|
|
|
+ np = np->next;
|
|
|
+ }
|
|
|
+ return np ? np->data : 0;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+** The array is obtained from malloc. Return NULL if memory allocation
|
|
|
+** problems, or if the array is empty. */
|
|
|
+struct state **State_arrayof(void)
|
|
|
+{
|
|
|
+ struct state **array;
|
|
|
+ int i,arrSize;
|
|
|
+ if( x3a==0 ) return 0;
|
|
|
+ arrSize = x3a->count;
|
|
|
+ array = (struct state **)calloc(arrSize, sizeof(struct state *));
|
|
|
+ if( array ){
|
|
|
+ for(i=0; i<arrSize; i++) array[i] = x3a->tbl[i].data;
|
|
|
+ }
|
|
|
+ return array;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+PRIVATE unsigned confighash(struct config *a)
|
|
|
+{
|
|
|
+ unsigned h=0;
|
|
|
+ h = h*571 + a->rp->index*37 + a->dot;
|
|
|
+ return h;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+** associative array of type "x4".
|
|
|
+*/
|
|
|
+struct s_x4 {
|
|
|
+ int size;
|
|
|
+
|
|
|
+
|
|
|
+ int count;
|
|
|
+ struct s_x4node *tbl;
|
|
|
+ struct s_x4node **ht;
|
|
|
+};
|
|
|
+
|
|
|
+
|
|
|
+** in an associative array of type "x4".
|
|
|
+*/
|
|
|
+typedef struct s_x4node {
|
|
|
+ struct config *data;
|
|
|
+ struct s_x4node *next;
|
|
|
+ struct s_x4node **from;
|
|
|
+} x4node;
|
|
|
+
|
|
|
+
|
|
|
+static struct s_x4 *x4a;
|
|
|
+
|
|
|
+
|
|
|
+void Configtable_init(void){
|
|
|
+ if( x4a ) return;
|
|
|
+ x4a = (struct s_x4*)malloc( sizeof(struct s_x4) );
|
|
|
+ if( x4a ){
|
|
|
+ x4a->size = 64;
|
|
|
+ x4a->count = 0;
|
|
|
+ x4a->tbl = (x4node*)calloc(64, sizeof(x4node) + sizeof(x4node*));
|
|
|
+ if( x4a->tbl==0 ){
|
|
|
+ free(x4a);
|
|
|
+ x4a = 0;
|
|
|
+ }else{
|
|
|
+ int i;
|
|
|
+ x4a->ht = (x4node**)&(x4a->tbl[64]);
|
|
|
+ for(i=0; i<64; i++) x4a->ht[i] = 0;
|
|
|
+ }
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+** Prior data with the same key is NOT overwritten */
|
|
|
+int Configtable_insert(struct config *data)
|
|
|
+{
|
|
|
+ x4node *np;
|
|
|
+ unsigned h;
|
|
|
+ unsigned ph;
|
|
|
+
|
|
|
+ if( x4a==0 ) return 0;
|
|
|
+ ph = confighash(data);
|
|
|
+ h = ph & (x4a->size-1);
|
|
|
+ np = x4a->ht[h];
|
|
|
+ while( np ){
|
|
|
+ if( Configcmp((const char *) np->data,(const char *) data)==0 ){
|
|
|
+
|
|
|
+
|
|
|
+ return 0;
|
|
|
+ }
|
|
|
+ np = np->next;
|
|
|
+ }
|
|
|
+ if( x4a->count>=x4a->size ){
|
|
|
+
|
|
|
+ int i,arrSize;
|
|
|
+ struct s_x4 array;
|
|
|
+ array.size = arrSize = x4a->size*2;
|
|
|
+ array.count = x4a->count;
|
|
|
+ array.tbl = (x4node*)calloc(arrSize, sizeof(x4node) + sizeof(x4node*));
|
|
|
+ if( array.tbl==0 ) return 0;
|
|
|
+ array.ht = (x4node**)&(array.tbl[arrSize]);
|
|
|
+ for(i=0; i<arrSize; i++) array.ht[i] = 0;
|
|
|
+ for(i=0; i<x4a->count; i++){
|
|
|
+ x4node *oldnp, *newnp;
|
|
|
+ oldnp = &(x4a->tbl[i]);
|
|
|
+ h = confighash(oldnp->data) & (arrSize-1);
|
|
|
+ newnp = &(array.tbl[i]);
|
|
|
+ if( array.ht[h] ) array.ht[h]->from = &(newnp->next);
|
|
|
+ newnp->next = array.ht[h];
|
|
|
+ newnp->data = oldnp->data;
|
|
|
+ newnp->from = &(array.ht[h]);
|
|
|
+ array.ht[h] = newnp;
|
|
|
+ }
|
|
|
+
|
|
|
+ ** on modern machines, don't worry about freeing this trival amount of
|
|
|
+ ** memory. */
|
|
|
+ *x4a = array;
|
|
|
+ }
|
|
|
+
|
|
|
+ h = ph & (x4a->size-1);
|
|
|
+ np = &(x4a->tbl[x4a->count++]);
|
|
|
+ np->data = data;
|
|
|
+ if( x4a->ht[h] ) x4a->ht[h]->from = &(np->next);
|
|
|
+ np->next = x4a->ht[h];
|
|
|
+ x4a->ht[h] = np;
|
|
|
+ np->from = &(x4a->ht[h]);
|
|
|
+ return 1;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+** if no such key. */
|
|
|
+struct config *Configtable_find(struct config *key)
|
|
|
+{
|
|
|
+ int h;
|
|
|
+ x4node *np;
|
|
|
+
|
|
|
+ if( x4a==0 ) return 0;
|
|
|
+ h = confighash(key) & (x4a->size-1);
|
|
|
+ np = x4a->ht[h];
|
|
|
+ while( np ){
|
|
|
+ if( Configcmp((const char *) np->data,(const char *) key)==0 ) break;
|
|
|
+ np = np->next;
|
|
|
+ }
|
|
|
+ return np ? np->data : 0;
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+** as it is removed. ("f" may be null to avoid this step.) */
|
|
|
+void Configtable_clear(int(*f)(struct config *))
|
|
|
+{
|
|
|
+ int i;
|
|
|
+ if( x4a==0 || x4a->count==0 ) return;
|
|
|
+ if( f ) for(i=0; i<x4a->count; i++) (*f)(x4a->tbl[i].data);
|
|
|
+ for(i=0; i<x4a->size; i++) x4a->ht[i] = 0;
|
|
|
+ x4a->count = 0;
|
|
|
+ return;
|
|
|
+}
|
