105 lines
2.0 KiB
C
105 lines
2.0 KiB
C
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/************************************************************
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yyspush.c
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This file can be freely modified for the generation of
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custom code.
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Copyright (c) 1999 Bumble-Bee Software Ltd.
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************************************************************/
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#include <stdlib.h>
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#include <string.h>
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#include "yacc.h"
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#ifdef YYPROTOTYPE
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int YYCDECL yypush(yystack_t state)
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#else
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int YYCDECL yypush(state)
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yystack_t state;
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#endif
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{
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yytop++; /* increment first */
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if (yytop == yystack_size) {
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do {
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if (yystackgrow) {
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if (yystack_size != 0) {
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int size = yystack_size * 2;
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if (size / 2 == yystack_size) { /* overflow check */
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if (yysetstacksize(size)) {
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break;
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}
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}
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}
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else {
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if (yysetstacksize(100)) {
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break;
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}
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}
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}
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yytop--;
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/* debugging */
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#ifdef YYDEBUG
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if (yydebug || yyparsedebug) {
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yyparsedebugoutput("stack overflow\n");
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}
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#endif
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yystackoverflow();
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return 0;
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}
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while (0);
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}
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yystackptr[yytop] = state;
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/* debugging */
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#ifdef YYDEBUG
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if (yydebug || yyparsedebug) {
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char string[128];
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sprintf(string, "push state %d", (int) state);
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yyparsedebugoutput(string);
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if (yytop > 0) {
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sprintf(string, " covering state %d", (int) yystackptr[yytop - 1]);
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yyparsedebugoutput(string);
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}
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yyparsedebugoutput("\n");
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/* output stack contents */
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if (yydebugstack || yyparsedebugstack) {
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int rows;
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int i;
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int n;
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yyparsedebugoutput("\nstack");
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n = sprintf(string, "\n +");
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for (i = 0; i < 10; i++) {
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n += sprintf(&string[n], " %5d", (int) i);
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}
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yyparsedebugoutput(string);
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rows = 1;
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if (yytop >= 0) {
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rows += yytop / 10;
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}
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for (i = 0; i < rows; i++) {
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int j;
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n = sprintf(string, "\n %5d", (int) (10 * i));
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for (j = 0; j < 10; j++) {
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int index = 10 * i + j;
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if (index <= yytop) {
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n += sprintf(&string[n], " %5d", (int) yystackptr[index]);
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}
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else {
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n += sprintf(&string[n], " -");
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}
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}
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yyparsedebugoutput(string);
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}
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yyparsedebugoutput("\n\n");
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}
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}
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#endif
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return 1;
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}
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