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-rw-r--r--lcc/cpp/cpp.c322
1 files changed, 0 insertions, 322 deletions
diff --git a/lcc/cpp/cpp.c b/lcc/cpp/cpp.c
deleted file mode 100644
index 6739e4d..0000000
--- a/lcc/cpp/cpp.c
+++ /dev/null
@@ -1,322 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <time.h>
-#include <stdarg.h>
-#include "cpp.h"
-
-char rcsid[] = "cpp.c - faked rcsid";
-
-#define OUTS 16384
-char outbuf[OUTS];
-char *outp = outbuf;
-Source *cursource;
-int nerrs;
-struct token nltoken = { NL, 0, 0, 0, 1, (uchar*)"\n" };
-char *curtime;
-int incdepth;
-int ifdepth;
-int ifsatisfied[NIF];
-int skipping;
-
-
-int
-main(int argc, char **argv)
-{
- Tokenrow tr;
- time_t t;
- char ebuf[BUFSIZ];
-
- setbuf(stderr, ebuf);
- t = time(NULL);
- curtime = ctime(&t);
- maketokenrow(3, &tr);
- expandlex();
- setup(argc, argv);
- fixlex();
- iniths();
- genline();
- process(&tr);
- flushout();
- fflush(stderr);
- exit(nerrs > 0);
- return 0;
-}
-
-void
-process(Tokenrow *trp)
-{
- int anymacros = 0;
-
- for (;;) {
- if (trp->tp >= trp->lp) {
- trp->tp = trp->lp = trp->bp;
- outp = outbuf;
- anymacros |= gettokens(trp, 1);
- trp->tp = trp->bp;
- }
- if (trp->tp->type == END) {
- if (--incdepth>=0) {
- if (cursource->ifdepth)
- error(ERROR,
- "Unterminated conditional in #include");
- unsetsource();
- cursource->line += cursource->lineinc;
- trp->tp = trp->lp;
- genline();
- continue;
- }
- if (ifdepth)
- error(ERROR, "Unterminated #if/#ifdef/#ifndef");
- break;
- }
- if (trp->tp->type==SHARP) {
- trp->tp += 1;
- control(trp);
- } else if (!skipping && anymacros)
- expandrow(trp, NULL);
- if (skipping)
- setempty(trp);
- puttokens(trp);
- anymacros = 0;
- cursource->line += cursource->lineinc;
- if (cursource->lineinc>1) {
- genline();
- }
- }
-}
-
-void
-control(Tokenrow *trp)
-{
- Nlist *np;
- Token *tp;
-
- tp = trp->tp;
- if (tp->type!=NAME) {
- if (tp->type==NUMBER)
- goto kline;
- if (tp->type != NL)
- error(ERROR, "Unidentifiable control line");
- return; /* else empty line */
- }
- if ((np = lookup(tp, 0))==NULL || ((np->flag&ISKW)==0 && !skipping)) {
- error(WARNING, "Unknown preprocessor control %t", tp);
- return;
- }
- if (skipping) {
- switch (np->val) {
- case KENDIF:
- if (--ifdepth<skipping)
- skipping = 0;
- --cursource->ifdepth;
- setempty(trp);
- return;
-
- case KIFDEF:
- case KIFNDEF:
- case KIF:
- if (++ifdepth >= NIF)
- error(FATAL, "#if too deeply nested");
- ++cursource->ifdepth;
- return;
-
- case KELIF:
- case KELSE:
- if (ifdepth<=skipping)
- break;
- return;
-
- default:
- return;
- }
- }
- switch (np->val) {
- case KDEFINE:
- dodefine(trp);
- break;
-
- case KUNDEF:
- tp += 1;
- if (tp->type!=NAME || trp->lp - trp->bp != 4) {
- error(ERROR, "Syntax error in #undef");
- break;
- }
- if ((np = lookup(tp, 0)) != NULL)
- np->flag &= ~ISDEFINED;
- break;
-
- case KPRAGMA:
- return;
-
- case KIFDEF:
- case KIFNDEF:
- case KIF:
- if (++ifdepth >= NIF)
- error(FATAL, "#if too deeply nested");
- ++cursource->ifdepth;
- ifsatisfied[ifdepth] = 0;
- if (eval(trp, np->val))
- ifsatisfied[ifdepth] = 1;
- else
- skipping = ifdepth;
- break;
-
- case KELIF:
- if (ifdepth==0) {
- error(ERROR, "#elif with no #if");
- return;
- }
- if (ifsatisfied[ifdepth]==2)
- error(ERROR, "#elif after #else");
- if (eval(trp, np->val)) {
- if (ifsatisfied[ifdepth])
- skipping = ifdepth;
- else {
- skipping = 0;
- ifsatisfied[ifdepth] = 1;
- }
- } else
- skipping = ifdepth;
- break;
-
- case KELSE:
- if (ifdepth==0 || cursource->ifdepth==0) {
- error(ERROR, "#else with no #if");
- return;
- }
- if (ifsatisfied[ifdepth]==2)
- error(ERROR, "#else after #else");
- if (trp->lp - trp->bp != 3)
- error(ERROR, "Syntax error in #else");
- skipping = ifsatisfied[ifdepth]? ifdepth: 0;
- ifsatisfied[ifdepth] = 2;
- break;
-
- case KENDIF:
- if (ifdepth==0 || cursource->ifdepth==0) {
- error(ERROR, "#endif with no #if");
- return;
- }
- --ifdepth;
- --cursource->ifdepth;
- if (trp->lp - trp->bp != 3)
- error(WARNING, "Syntax error in #endif");
- break;
-
- case KERROR:
- trp->tp = tp+1;
- error(WARNING, "#error directive: %r", trp);
- break;
-
- case KLINE:
- trp->tp = tp+1;
- expandrow(trp, "<line>");
- tp = trp->bp+2;
- kline:
- if (tp+1>=trp->lp || tp->type!=NUMBER || tp+3<trp->lp
- || ((tp+3==trp->lp && ((tp+1)->type!=STRING))||*(tp+1)->t=='L')){
- error(ERROR, "Syntax error in #line");
- return;
- }
- cursource->line = atol((char*)tp->t)-1;
- if (cursource->line<0 || cursource->line>=32768)
- error(WARNING, "#line specifies number out of range");
- tp = tp+1;
- if (tp+1<trp->lp)
- cursource->filename=(char*)newstring(tp->t+1,tp->len-2,0);
- return;
-
- case KDEFINED:
- error(ERROR, "Bad syntax for control line");
- break;
-
- case KINCLUDE:
- doinclude(trp);
- trp->lp = trp->bp;
- return;
-
- case KEVAL:
- eval(trp, np->val);
- break;
-
- default:
- error(ERROR, "Preprocessor control `%t' not yet implemented", tp);
- break;
- }
- setempty(trp);
- return;
-}
-
-void *
-domalloc(int size)
-{
- void *p = malloc(size);
-
- if (p==NULL)
- error(FATAL, "Out of memory from malloc");
- return p;
-}
-
-void
-dofree(void *p)
-{
- free(p);
-}
-
-void
-error(enum errtype type, char *string, ...)
-{
- va_list ap;
- char *cp, *ep;
- Token *tp;
- Tokenrow *trp;
- Source *s;
- int i;
-
- fprintf(stderr, "cpp: ");
- for (s=cursource; s; s=s->next)
- if (*s->filename)
- fprintf(stderr, "%s:%d ", s->filename, s->line);
- va_start(ap, string);
- for (ep=string; *ep; ep++) {
- if (*ep=='%') {
- switch (*++ep) {
-
- case 's':
- cp = va_arg(ap, char *);
- fprintf(stderr, "%s", cp);
- break;
- case 'd':
- i = va_arg(ap, int);
- fprintf(stderr, "%d", i);
- break;
- case 't':
- tp = va_arg(ap, Token *);
- fprintf(stderr, "%.*s", tp->len, tp->t);
- break;
-
- case 'r':
- trp = va_arg(ap, Tokenrow *);
- for (tp=trp->tp; tp<trp->lp&&tp->type!=NL; tp++) {
- if (tp>trp->tp && tp->wslen)
- fputc(' ', stderr);
- fprintf(stderr, "%.*s", tp->len, tp->t);
- }
- break;
-
- default:
- fputc(*ep, stderr);
- break;
- }
- } else
- fputc(*ep, stderr);
- }
- va_end(ap);
- fputc('\n', stderr);
- if (type==FATAL)
- exit(1);
- if (type!=WARNING)
- nerrs = 1;
- fflush(stderr);
-}