tradcpp K&R-style C preprocessor: directive.c annotate

annotate directive.c @ 65:161edab0d361

test undef

author	David A. Holland
date	Sun, 31 Mar 2013 02:18:24 -0400
parents	f50b4ea6cbfe
children	f8507e5ed84c

rev	line source
30 76c114899f63 copyrights David A. Holland parents: 18 diff changeset	1 /*-
76c114899f63 copyrights David A. Holland parents: 18 diff changeset	2 * Copyright (c) 2010 The NetBSD Foundation, Inc.
76c114899f63 copyrights David A. Holland parents: 18 diff changeset	3 * All rights reserved.
76c114899f63 copyrights David A. Holland parents: 18 diff changeset	4 *
76c114899f63 copyrights David A. Holland parents: 18 diff changeset	5 * This code is derived from software contributed to The NetBSD Foundation
76c114899f63 copyrights David A. Holland parents: 18 diff changeset	6 * by David A. Holland.
76c114899f63 copyrights David A. Holland parents: 18 diff changeset	7 *
76c114899f63 copyrights David A. Holland parents: 18 diff changeset	8 * Redistribution and use in source and binary forms, with or without
76c114899f63 copyrights David A. Holland parents: 18 diff changeset	9 * modification, are permitted provided that the following conditions
76c114899f63 copyrights David A. Holland parents: 18 diff changeset	10 * are met:
76c114899f63 copyrights David A. Holland parents: 18 diff changeset	11 * 1. Redistributions of source code must retain the above copyright
76c114899f63 copyrights David A. Holland parents: 18 diff changeset	12 * notice, this list of conditions and the following disclaimer.
76c114899f63 copyrights David A. Holland parents: 18 diff changeset	13 * 2. Redistributions in binary form must reproduce the above copyright
76c114899f63 copyrights David A. Holland parents: 18 diff changeset	14 * notice, this list of conditions and the following disclaimer in the
76c114899f63 copyrights David A. Holland parents: 18 diff changeset	15 * documentation and/or other materials provided with the distribution.
76c114899f63 copyrights David A. Holland parents: 18 diff changeset	16 *
76c114899f63 copyrights David A. Holland parents: 18 diff changeset	17 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
76c114899f63 copyrights David A. Holland parents: 18 diff changeset	18 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
76c114899f63 copyrights David A. Holland parents: 18 diff changeset	19 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
76c114899f63 copyrights David A. Holland parents: 18 diff changeset	20 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
76c114899f63 copyrights David A. Holland parents: 18 diff changeset	21 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
76c114899f63 copyrights David A. Holland parents: 18 diff changeset	22 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
76c114899f63 copyrights David A. Holland parents: 18 diff changeset	23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
76c114899f63 copyrights David A. Holland parents: 18 diff changeset	24 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
76c114899f63 copyrights David A. Holland parents: 18 diff changeset	25 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
76c114899f63 copyrights David A. Holland parents: 18 diff changeset	26 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
76c114899f63 copyrights David A. Holland parents: 18 diff changeset	27 * POSSIBILITY OF SUCH DAMAGE.
76c114899f63 copyrights David A. Holland parents: 18 diff changeset	28 */
76c114899f63 copyrights David A. Holland parents: 18 diff changeset	29
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	30 #include <assert.h>
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	31 #include <stdbool.h>
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	32 #include <stdlib.h>
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	33 #include <string.h>
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	34
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	35 #include "utils.h"
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	36 #include "mode.h"
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	37 #include "place.h"
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	38 #include "files.h"
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	39 #include "directive.h"
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	40 #include "macro.h"
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	41 #include "eval.h"
49 8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	42 #include "output.h"
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	43
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	44 struct ifstate {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	45 struct ifstate *prev;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	46 struct place startplace;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	47 bool curtrue;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	48 bool evertrue;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	49 bool seenelse;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	50 };
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	51
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	52 static struct ifstate *ifstate;
49 8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	53 static bool in_multiline_comment;
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	54
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	55 ////////////////////////////////////////////////////////////
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	56 // common parsing bits
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	57
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	58 static
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	59 void
64 f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	60 uncomment(char *buf)
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	61 {
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	62 char s, t, *u = NULL;
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	63 bool incomment = false;
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	64
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	65 for (s = t = buf; *s; s++) {
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	66 if (incomment) {
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	67 if (s[0] == '*' && s[1] == '/') {
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	68 s++;
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	69 incomment = false;
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	70 }
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	71 } else {
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	72 if (s[0] == '/' && s[1] == '*') {
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	73 incomment = true;
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	74 } else {
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	75 if (t != s) {
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	76 t = s;
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	77 }
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	78 if (!strchr(ws, *t)) {
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	79 u = t;
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	80 }
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	81 t++;
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	82 }
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	83 }
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	84 }
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	85 if (u) {
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	86 /* end string after last non-whitespace char */
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	87 u[1] = '\0';
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	88 } else {
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	89 *t = '\0';
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	90 }
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	91 }
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	92
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	93 static
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	94 void
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	95 oneword(const char what, struct place p2, char *line)
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	96 {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	97 size_t pos;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	98
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	99 pos = strcspn(line, ws);
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	100 if (line[pos] != '\0') {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	101 p2->column += pos;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	102 complain(p2, "Garbage after %s argument", what);
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	103 complain_fail();
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	104 line[pos] = '\0';
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	105 }
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	106 }
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	107
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	108 ////////////////////////////////////////////////////////////
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	109 // if handling
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	110
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	111 static
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	112 struct ifstate *
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	113 ifstate_create(struct ifstate prev, struct place p, bool startstate)
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	114 {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	115 struct ifstate *is;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	116
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	117 is = domalloc(sizeof(*is));
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	118 is->prev = prev;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	119 if (p != NULL) {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	120 is->startplace = *p;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	121 } else {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	122 place_setbuiltin(&is->startplace, 1);
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	123 }
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	124 is->curtrue = startstate;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	125 is->evertrue = is->curtrue;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	126 is->seenelse = false;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	127 return is;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	128 }
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	129
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	130 static
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	131 void
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	132 ifstate_destroy(struct ifstate *is)
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	133 {
39 337110e7240a Pass the size to free; it makes debug checking easier. David A. Holland parents: 38 diff changeset	134 dofree(is, sizeof(*is));
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	135 }
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	136
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	137 static
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	138 void
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	139 ifstate_push(struct place *p, bool startstate)
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	140 {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	141 ifstate = ifstate_create(ifstate, p, startstate);
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	142 }
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	143
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	144 static
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	145 void
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	146 ifstate_pop(void)
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	147 {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	148 struct ifstate *is;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	149
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	150 is = ifstate;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	151 ifstate = ifstate->prev;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	152 ifstate_destroy(is);
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	153 }
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	154
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	155 static
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	156 void
64 f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	157 d_if(struct place p, struct place p2, char *line)
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	158 {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	159 char *expr;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	160 bool val;
16 9dda765ee85c expression evaluator David A. Holland parents: 15 diff changeset	161 struct place p3 = *p2;
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	162
64 f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	163 uncomment(line);
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	164 expr = macroexpand(p2, line, strlen(line), true);
16 9dda765ee85c expression evaluator David A. Holland parents: 15 diff changeset	165 val = eval(&p3, expr);
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	166 ifstate_push(p, val);
39 337110e7240a Pass the size to free; it makes debug checking easier. David A. Holland parents: 38 diff changeset	167 dostrfree(expr);
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	168 }
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	169
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	170 static
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	171 void
64 f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	172 d_ifdef(struct place p, struct place p2, char *line)
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	173 {
64 f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	174 uncomment(line);
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	175 oneword("#ifdef", p2, line);
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	176 ifstate_push(p, macro_isdefined(line));
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	177 }
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	178
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	179 static
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	180 void
64 f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	181 d_ifndef(struct place p, struct place p2, char *line)
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	182 {
64 f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	183 uncomment(line);
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	184 oneword("#ifndef", p2, line);
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	185 ifstate_push(p, !macro_isdefined(line));
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	186 }
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	187
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	188 static
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	189 void
64 f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	190 d_elif(struct place p, struct place p2, char *line)
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	191 {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	192 char *expr;
16 9dda765ee85c expression evaluator David A. Holland parents: 15 diff changeset	193 struct place p3 = *p2;
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	194
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	195 if (ifstate->seenelse) {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	196 complain(p, "#elif after #else");
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	197 complain_fail();
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	198 }
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	199
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	200 if (ifstate->evertrue) {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	201 ifstate->curtrue = false;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	202 } else {
64 f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	203 uncomment(line);
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	204 expr = macroexpand(p2, line, strlen(line), true);
16 9dda765ee85c expression evaluator David A. Holland parents: 15 diff changeset	205 ifstate->curtrue = eval(&p3, expr);
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	206 ifstate->evertrue = ifstate->curtrue;
39 337110e7240a Pass the size to free; it makes debug checking easier. David A. Holland parents: 38 diff changeset	207 dostrfree(expr);
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	208 }
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	209 }
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	210
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	211 static
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	212 void
64 f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	213 d_else(struct place p, struct place p2, char *line)
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	214 {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	215 if (ifstate->seenelse) {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	216 complain(p, "Multiple #else directives in one conditional");
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	217 complain_fail();
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	218 }
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	219
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	220 ifstate->curtrue = !ifstate->evertrue;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	221 ifstate->evertrue = true;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	222 ifstate->seenelse = true;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	223 }
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	224
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	225 static
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	226 void
64 f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	227 d_endif(struct place p, struct place p2, char *line)
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	228 {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	229 if (ifstate->prev == NULL) {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	230 complain(p, "Unmatched #endif");
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	231 complain_fail();
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	232 } else {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	233 ifstate_pop();
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	234 }
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	235 }
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	236
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	237 ////////////////////////////////////////////////////////////
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	238 // macros
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	239
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	240 static
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	241 void
64 f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	242 d_define(struct place p, struct place p2, char *line)
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	243 {
18 c08a947d8f30 deal with macro parameters David A. Holland parents: 16 diff changeset	244 size_t pos, argpos;
c08a947d8f30 deal with macro parameters David A. Holland parents: 16 diff changeset	245 struct place p3, p4;
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	246
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	247 /*
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	248 * line may be:
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	249 * macro expansion
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	250 * macro(arg, arg, ...) expansion
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	251 */
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	252
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	253 pos = strcspn(line, " \t\f\v(");
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	254 if (line[pos] == '(') {
18 c08a947d8f30 deal with macro parameters David A. Holland parents: 16 diff changeset	255 line[pos++] = '\0';
c08a947d8f30 deal with macro parameters David A. Holland parents: 16 diff changeset	256 argpos = pos;
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	257 pos = pos + strcspn(line+pos, "()");
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	258 if (line[pos] == '(') {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	259 p2->column += pos;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	260 complain(p2, "Left parenthesis in macro parameters");
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	261 complain_fail();
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	262 return;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	263 }
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	264 if (line[pos] != ')') {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	265 p2->column += pos;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	266 complain(p2, "Unclosed macro parameter list");
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	267 complain_fail();
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	268 return;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	269 }
18 c08a947d8f30 deal with macro parameters David A. Holland parents: 16 diff changeset	270 line[pos++] = '\0';
36 a489cc223483 Don't demand space after the macro argument parenthesis. David A. Holland parents: 30 diff changeset	271 #if 0
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	272 if (!strchr(ws, line[pos])) {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	273 p2->column += pos;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	274 complain(p2, "Trash after macro parameter list");
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	275 complain_fail();
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	276 return;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	277 }
36 a489cc223483 Don't demand space after the macro argument parenthesis. David A. Holland parents: 30 diff changeset	278 #endif
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	279 } else if (line[pos] == '\0') {
18 c08a947d8f30 deal with macro parameters David A. Holland parents: 16 diff changeset	280 argpos = 0;
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	281 } else {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	282 line[pos++] = '\0';
18 c08a947d8f30 deal with macro parameters David A. Holland parents: 16 diff changeset	283 argpos = 0;
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	284 }
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	285
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	286 pos += strspn(line+pos, ws);
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	287
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	288 p3 = *p2;
18 c08a947d8f30 deal with macro parameters David A. Holland parents: 16 diff changeset	289 p3.column += argpos;
c08a947d8f30 deal with macro parameters David A. Holland parents: 16 diff changeset	290
c08a947d8f30 deal with macro parameters David A. Holland parents: 16 diff changeset	291 p4 = *p2;
c08a947d8f30 deal with macro parameters David A. Holland parents: 16 diff changeset	292 p4.column += pos;
c08a947d8f30 deal with macro parameters David A. Holland parents: 16 diff changeset	293
c08a947d8f30 deal with macro parameters David A. Holland parents: 16 diff changeset	294 if (argpos) {
c08a947d8f30 deal with macro parameters David A. Holland parents: 16 diff changeset	295 macro_define_params(p2, line, &p3,
c08a947d8f30 deal with macro parameters David A. Holland parents: 16 diff changeset	296 line + argpos, &p4,
c08a947d8f30 deal with macro parameters David A. Holland parents: 16 diff changeset	297 line + pos);
c08a947d8f30 deal with macro parameters David A. Holland parents: 16 diff changeset	298 } else {
c08a947d8f30 deal with macro parameters David A. Holland parents: 16 diff changeset	299 macro_define_plain(p2, line, &p4, line + pos);
c08a947d8f30 deal with macro parameters David A. Holland parents: 16 diff changeset	300 }
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	301 }
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	302
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	303 static
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	304 void
64 f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	305 d_undef(struct place p, struct place p2, char *line)
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	306 {
64 f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	307 uncomment(line);
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	308 oneword("#undef", p2, line);
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	309 macro_undef(line);
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	310 }
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	311
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	312 ////////////////////////////////////////////////////////////
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	313 // includes
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	314
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	315 static
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	316 bool
64 f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	317 tryinclude(struct place p, char line)
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	318 {
64 f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	319 size_t len;
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	320
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	321 len = strlen(line);
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	322 if (len > 2 && line[0] == '"' && line[len-1] == '"') {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	323 line[len-1] = '\0';
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	324 file_readquote(p, line+1);
62 90c6052410ce Don't truncate the candidate include path strings. David A. Holland parents: 49 diff changeset	325 line[len-1] = '"';
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	326 return true;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	327 }
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	328 if (len > 2 && line[0] == '<' && line[len-1] == '>') {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	329 line[len-1] = '\0';
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	330 file_readbracket(p, line+1);
62 90c6052410ce Don't truncate the candidate include path strings. David A. Holland parents: 49 diff changeset	331 line[len-1] = '>';
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	332 return true;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	333 }
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	334 return false;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	335 }
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	336
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	337 static
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	338 void
64 f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	339 d_include(struct place p, struct place p2, char *line)
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	340 {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	341 char *text;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	342
64 f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	343 uncomment(line);
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	344 if (tryinclude(p, line)) {
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	345 return;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	346 }
64 f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	347 text = macroexpand(p2, line, strlen(line), false);
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	348 if (tryinclude(p, text)) {
39 337110e7240a Pass the size to free; it makes debug checking easier. David A. Holland parents: 38 diff changeset	349 dostrfree(text);
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	350 return;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	351 }
39 337110e7240a Pass the size to free; it makes debug checking easier. David A. Holland parents: 38 diff changeset	352 dostrfree(text);
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	353 complain(p, "Illegal #include directive");
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	354 complain_fail();
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	355 }
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	356
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	357 static
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	358 void
64 f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	359 d_line(struct place p, struct place p2, char *line)
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	360 {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	361 /* XXX */
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	362 complain(p, "Sorry, no #line yet");
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	363 }
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	364
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	365 ////////////////////////////////////////////////////////////
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	366 // messages
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	367
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	368 static
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	369 void
64 f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	370 d_warning(struct place p, struct place p2, char *line)
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	371 {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	372 char *msg;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	373
64 f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	374 msg = macroexpand(p2, line, strlen(line), false);
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	375 complain(p, "#warning: %s", msg);
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	376 if (mode.werror) {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	377 complain_fail();
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	378 }
39 337110e7240a Pass the size to free; it makes debug checking easier. David A. Holland parents: 38 diff changeset	379 dostrfree(msg);
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	380 }
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	381
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	382 static
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	383 void
64 f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	384 d_error(struct place p, struct place p2, char *line)
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	385 {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	386 char *msg;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	387
64 f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	388 msg = macroexpand(p2, line, strlen(line), false);
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	389 complain(p, "#error: %s", msg);
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	390 complain_fail();
39 337110e7240a Pass the size to free; it makes debug checking easier. David A. Holland parents: 38 diff changeset	391 dostrfree(msg);
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	392 }
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	393
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	394 ////////////////////////////////////////////////////////////
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	395 // other
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	396
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	397 static
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	398 void
64 f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	399 d_pragma(struct place p, struct place p2, char *line)
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	400 {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	401 complain(p, "#pragma %s", line);
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	402 complain_fail();
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	403 }
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	404
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	405 ////////////////////////////////////////////////////////////
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	406 // directive table
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	407
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	408 static const struct {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	409 const char *name;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	410 bool ifskip;
64 f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	411 void (func)(struct place , struct place , char line);
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	412 } directives[] = {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	413 { "define", true, d_define },
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	414 { "elif", false, d_elif },
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	415 { "else", false, d_else },
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	416 { "endif", false, d_endif },
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	417 { "error", true, d_error },
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	418 { "if", false, d_if },
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	419 { "ifdef", false, d_ifdef },
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	420 { "ifndef", false, d_ifndef },
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	421 { "include", true, d_include },
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	422 { "line", true, d_line },
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	423 { "pragma", true, d_pragma },
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	424 { "undef", true, d_undef },
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	425 { "warning", true, d_warning },
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	426 };
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	427 static const unsigned numdirectives = HOWMANY(directives);
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	428
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	429 static
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	430 void
64 f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	431 directive_gotdirective(struct place p, char line)
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	432 {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	433 struct place p2;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	434 size_t len, skip;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	435 unsigned i;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	436
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	437 p2 = *p;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	438 for (i=0; i<numdirectives; i++) {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	439 len = strlen(directives[i].name);
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	440 if (!strncmp(line, directives[i].name, len) &&
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	441 strchr(ws, line[len])) {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	442 if (directives[i].ifskip && !ifstate->curtrue) {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	443 return;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	444 }
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	445 skip = len + strspn(line+len, ws);
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	446 p2.column += skip;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	447 line += skip;
64 f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	448
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	449 len = strlen(line);
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	450 len = notrailingws(line, len);
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	451 if (len < strlen(line)) {
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	452 line[len] = '\0';
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	453 }
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	454 directives[i].func(p, &p2, line);
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	455 return;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	456 }
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	457 }
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	458 skip = strcspn(line, ws);
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	459 complain(p, "Unknown directive #%.*s", (int)skip, line);
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	460 complain_fail();
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	461 }
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	462
49 8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	463 /*
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	464 * If desired, warn about a nested comment. The comment begins at
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	465 * offset POS from the place P.
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	466 */
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	467 static
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	468 void
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	469 warn_nestcomment(const struct place *p, size_t pos)
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	470 {
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	471 struct place p2;
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	472
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	473 if (warns.nestcomment) {
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	474 p2 = *p;
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	475 p2.column += pos;
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	476 complain(p, "Warning: %c%c within comment",
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	477 '/', '*');
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	478 if (mode.werror) {
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	479 complain_failed();
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	480 }
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	481 }
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	482 }
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	483
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	484 /*
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	485 * Check for comment delimiters in LINE. If a multi-line comment is
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	486 * continuing or ending, set ACOMM to its length. If a multi-line
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	487 * comment is starting, set BCOMM to its length. Set TEXT to the
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	488 * length of text that is not commented out, or that contains comments
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	489 * that both begin and end on this line. ACOMM + TEXT + BCOMM == LEN.
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	490 *
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	491 * Updates in_multiline_comment to the appropriate state for after
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	492 * this line is handled.
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	493 */
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	494 static
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	495 size_t
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	496 directive_scancomments(const struct place p, char line, size_t len,
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	497 size_t acomm, size_t text, size_t *bcomm)
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	498 {
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	499 size_t pos;
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	500 size_t first_commentend;
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	501 size_t last_commentstart;
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	502 bool incomment;
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	503
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	504 first_commentend = len;
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	505 last_commentstart = len;
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	506 incomment = in_multiline_comment;
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	507 for (pos = 0; pos+1 < len; pos++) {
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	508 if (line[pos] == '/' && line[pos+1] == '*') {
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	509 if (incomment) {
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	510 warn_nestcomment(p, pos);
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	511 } else {
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	512 incomment = true;
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	513 last_commentstart = pos;
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	514 }
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	515 } else if (line[pos] == '*' && line[pos+1] == '/') {
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	516 if (incomment) {
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	517 incomment = false;
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	518 if (first_commentend == len) {
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	519 first_commentend = pos;
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	520 }
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	521 last_commentstart = len;
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	522 } else {
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	523 /* stray end-comment; should we care? */
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	524 }
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	525 }
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	526 }
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	527
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	528 if (in_multiline_comment && first_commentend < last_commentstart) {
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	529 /* multiline comment ends */
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	530 /* first_commentend points to the star, adjust */
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	531 *acomm = first_commentend + 2;
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	532 text = len - acomm;
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	533 } else if (in_multiline_comment) {
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	534 /* comment did not end, so another one cannot have started */
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	535 assert(last_commentstart == len);
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	536 *acomm = len;
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	537 *text = 0;
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	538 } else {
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	539 *acomm = 0;
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	540 *text = len;
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	541 }
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	542
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	543 *bcomm = len - last_commentstart;
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	544 text -= bcomm;
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	545
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	546 in_multiline_comment = incomment;
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	547 return len;
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	548 }
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	549
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	550 void
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	551 directive_gotline(struct place p, char line, size_t len)
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	552 {
49 8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	553 size_t acomm; /* length of comment ending on this line */
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	554 size_t text; /* length of non-multi-line-comment text */
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	555 size_t bcomm; /* length of comment beginning on this line */
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	556 size_t skip;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	557
49 8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	558 directive_scancomments(p, line, len, &acomm, &text, &bcomm);
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	559
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	560 if (acomm > 0) {
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	561 if (mode.output_retain_comments && ifstate->curtrue) {
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	562 /*
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	563 * Do not expand the comment; send it straight
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	564 * to the output. This will cause it to appear
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	565 * first if we're partway through collecting a
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	566 * macro argument. Too bad. This isn't a
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	567 * standard mode anyway.
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	568 */
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	569 output(p, line, acomm);
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	570 }
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	571 p->column += acomm;
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	572 }
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	573
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	574 /* check if we have a directive line */
49 8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	575 skip = strspn(line + acomm, ws);
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	576 if (acomm == 0 && line[skip] == '#') {
64 f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	577 char ch;
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	578
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	579 skip = skip + 1 + strspn(line + skip + 1, ws);
49 8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	580 assert(skip <= text);
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	581 p->column += skip;
64 f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	582 assert(line[len] == '\0');
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	583 /* ensure null termination for directives */
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	584 ch = line[text];
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	585 if (ch != '\0') {
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	586 line[text] = '\0';
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	587 }
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	588 directive_gotdirective(p, line+skip /, length = text-skip /);
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	589 line[text] = ch;
49 8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	590 p->column += text-skip;
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	591 } else if (ifstate->curtrue) {
49 8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	592 macro_sendline(p, line + acomm, text);
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	593 p->column += text;
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	594 }
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	595
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	596 if (bcomm > 0) {
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	597 if (mode.output_retain_comments && ifstate->curtrue) {
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	598 output(p, line + acomm + text, bcomm);
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	599 }
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	600 p->column += bcomm;
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	601 }
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	602 }
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	603
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	604 void
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	605 directive_goteof(struct place *p)
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	606 {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	607 while (ifstate->prev != NULL) {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	608 complain(p, "Missing #endif");
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	609 complain(&ifstate->startplace, "...opened at this point");
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	610 complain_failed();
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	611 ifstate_pop();
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	612 }
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	613 macro_sendeof(p);
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	614 }
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	615
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	616 ////////////////////////////////////////////////////////////
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	617 // module initialization
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	618
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	619 void
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	620 directive_init(void)
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	621 {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	622 ifstate = ifstate_create(NULL, NULL, true);
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	623 }
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	624
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	625 void
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	626 directive_cleanup(void)
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	627 {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	628 assert(ifstate->prev == NULL);
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	629 ifstate_destroy(ifstate);
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	630 ifstate = NULL;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	631 }

Mercurial > ~dholland > hg > tradcpp > index.cgi

annotate directive.c @ 65:161edab0d361