diff regexParser/generateSequentialSearchCbC.cc @ 301:4cb6eea3ab12

add CbC version
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Thu, 04 Feb 2016 03:26:18 +0900
parents
children 1d79e61a9365
line wrap: on
line diff
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/regexParser/generateSequentialSearchCbC.cc	Thu Feb 04 03:26:18 2016 +0900
@@ -0,0 +1,53 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "generateSequentialSearch.h"
+#include "subsetConstruction.h"
+
+void
+generateState1(StatePtr state,long stateNum, bool accept, FILE *fp, TransitionGeneratorPtr tg) {
+    fprintf(fp,"__code state%lx(TSValue tsv) {\n",stateNum);
+    if (accept && state->accept) {
+        fputs("    tsv=tsv.tg->stateMatch(tsv);\n",fp);
+    }
+    fputs("    if (tsv.buff.buffptr >= tsv.buff.buffend) _exit(0);\n",fp);
+    CharClassWalkerPtr ccw = createCharClassWalker(state->cc);
+    if (hasNext(ccw)) fputs("    unsigned char c = *tsv.buff.buffptr++;\n",fp);
+    fputs("    if (0) ;\n",fp);
+    while (hasNext(ccw)) {
+        CharClassPtr cc = getNext(ccw);
+        unsigned long begin = cc->cond.range.begin;
+        unsigned long end = cc->cond.range.end;
+        BitVector bi = cc->nextState;
+        if (begin == end) {
+            fprintf(fp,"    else if (c=='%c') { goto state%lx(tsv);}\n",(unsigned char)begin, bi.bitContainer);
+        } else {
+            fprintf(fp,"    else if (c<'%c')  { tsv=tsv.tg->stateSkip(tsv);goto state0(tsv);}\n",(unsigned char)begin);
+            fprintf(fp,"    else if (c<='%c') { goto state%lx(tsv);} \n",(unsigned char)end,  bi.bitContainer);
+        }
+    }
+    free(ccw);
+    fprintf(fp,"    else { tsv=tsv.tg->stateSkip(tsv); goto state0(tsv);}\n");
+    fputs("}\n\n",fp);
+}
+
+void
+exportState(TransitionGeneratorPtr tg) {
+    StatePtr state = tg->stateList;
+    FILE *fp = fopen("stateCbC.cc","w");
+    if (fp==NULL) {
+        perror("");
+        fprintf(stderr,"cannot write stateCbC.cc\n");
+        exit(1);
+    }
+    for (;state;state = state->next) {
+        fprintf(fp,"__code state%lx(TSValue tsv);\n",state->bitState.bitContainer);
+    }
+    fputs("\n",fp);
+    // initial state must not accept empty string
+    generateState1(tg->stateList,0L,false,fp,tg);
+    for (state = tg->stateList;state;state = state->next) {
+        generateState1(state,state->bitState.bitContainer,true,fp,tg);
+    }
+    fclose(fp);
+}