1 files changed, 317 insertions, 304 deletions

diff --git a/src/tools/lcc/cpp/cpp.c b/src/tools/lcc/cpp/cpp.c
index 5c0cfd7..c379a72 100644
--- a/src/tools/lcc/cpp/cpp.c
+++ b/src/tools/lcc/cpp/cpp.c
@@ -1,326 +1,339 @@
+#include "cpp.h"
+#include <stdarg.h>
 #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	*outbufp = 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)
+#define OUTS 16384
+char outbuf[OUTS];
+char *outbufp = 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;
+    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)
+void process(Tokenrow *trp)
 {
-	int anymacros = 0;
-
-	for (;;) {
-		if (trp->tp >= trp->lp) {
-			trp->tp = trp->lp = trp->bp;
-			outbufp = 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();
-		}
-	}
+    int anymacros = 0;
+
+    for (;;)
+    {
+        if (trp->tp >= trp->lp)
+        {
+            trp->tp = trp->lp = trp->bp;
+            outbufp = 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 KWARNING:
-		trp->tp = tp+1;
-		error(WARNING, "#warning directive: %r", trp);
-		break;
-
-	case KERROR:
-		trp->tp = tp+1;
-		error(ERROR, "#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);
+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 KWARNING:
+            trp->tp = tp + 1;
+            error(WARNING, "#warning directive: %r", trp);
+            break;
+
+        case KERROR:
+            trp->tp = tp + 1;
+            error(ERROR, "#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);
 }
 
-void *
-domalloc(int size)
+void *domalloc(int size)
 {
-	void *p = malloc(size);
+    void *p = malloc(size);
 
-	if (p==NULL)
-		error(FATAL, "Out of memory from malloc");
-	return p;
+    if (p == NULL)
+        error(FATAL, "Out of memory from malloc");
+    return p;
 }
 
-void
-dofree(void *p)
-{
-	free(p);
-}
+void dofree(void *p) { free(p); }
 
-void
-error(enum errtype type, char *string, ...)
+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);
+    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);
 }