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

annotate directive.c @ 77:123168887da8

Clean out old not-really-working nested comment handling.

author	David A. Holland
date	Mon, 10 Jun 2013 20:12:37 -0400
parents	b1d0f10e8d36
children	27c9aafcaca1

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;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	53
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	54 ////////////////////////////////////////////////////////////
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	55 // common parsing bits
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	56
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	57 static
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	58 void
64 f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	59 uncomment(char *buf)
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	60 {
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	61 char s, t, *u = NULL;
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	62 bool incomment = false;
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	63
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	64 for (s = t = buf; *s; s++) {
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	65 if (incomment) {
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	66 if (s[0] == '*' && s[1] == '/') {
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	67 s++;
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	68 incomment = false;
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	69 }
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	70 } else {
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	71 if (s[0] == '/' && s[1] == '*') {
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	72 incomment = true;
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	73 } else {
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	74 if (t != s) {
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	75 t = s;
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	76 }
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	77 if (!strchr(ws, *t)) {
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	78 u = t;
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	79 }
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	80 t++;
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	81 }
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 if (u) {
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	85 /* end string after last non-whitespace char */
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	86 u[1] = '\0';
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	87 } else {
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	88 *t = '\0';
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	89 }
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 static
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	93 void
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	94 oneword(const char what, struct place p2, char *line)
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	95 {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	96 size_t pos;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	97
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	98 pos = strcspn(line, ws);
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	99 if (line[pos] != '\0') {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	100 p2->column += pos;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	101 complain(p2, "Garbage after %s argument", what);
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	102 complain_fail();
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	103 line[pos] = '\0';
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	104 }
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 // if handling
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	109
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	110 static
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	111 struct ifstate *
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	112 ifstate_create(struct ifstate prev, struct place p, bool startstate)
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	113 {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	114 struct ifstate *is;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	115
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	116 is = domalloc(sizeof(*is));
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	117 is->prev = prev;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	118 if (p != NULL) {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	119 is->startplace = *p;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	120 } else {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	121 place_setbuiltin(&is->startplace, 1);
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	122 }
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	123 is->curtrue = startstate;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	124 is->evertrue = is->curtrue;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	125 is->seenelse = false;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	126 return is;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	127 }
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	128
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	129 static
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	130 void
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	131 ifstate_destroy(struct ifstate *is)
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	132 {
39 337110e7240a Pass the size to free; it makes debug checking easier. David A. Holland parents: 38 diff changeset	133 dofree(is, sizeof(*is));
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	134 }
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	135
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	136 static
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	137 void
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	138 ifstate_push(struct place *p, bool startstate)
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	139 {
72 b1d0f10e8d36 handle nested ifs correctly David A. Holland parents: 66 diff changeset	140 struct ifstate *newstate;
b1d0f10e8d36 handle nested ifs correctly David A. Holland parents: 66 diff changeset	141
b1d0f10e8d36 handle nested ifs correctly David A. Holland parents: 66 diff changeset	142 newstate = ifstate_create(ifstate, p, startstate);
b1d0f10e8d36 handle nested ifs correctly David A. Holland parents: 66 diff changeset	143 if (!ifstate->curtrue) {
b1d0f10e8d36 handle nested ifs correctly David A. Holland parents: 66 diff changeset	144 newstate->curtrue = false;
b1d0f10e8d36 handle nested ifs correctly David A. Holland parents: 66 diff changeset	145 newstate->evertrue = true;
b1d0f10e8d36 handle nested ifs correctly David A. Holland parents: 66 diff changeset	146 }
b1d0f10e8d36 handle nested ifs correctly David A. Holland parents: 66 diff changeset	147 ifstate = newstate;
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	148 }
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	149
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	150 static
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	151 void
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	152 ifstate_pop(void)
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	153 {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	154 struct ifstate *is;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	155
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	156 is = ifstate;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	157 ifstate = ifstate->prev;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	158 ifstate_destroy(is);
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	159 }
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	160
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	161 static
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	162 void
64 f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	163 d_if(struct place p, struct place p2, char *line)
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	164 {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	165 char *expr;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	166 bool val;
16 9dda765ee85c expression evaluator David A. Holland parents: 15 diff changeset	167 struct place p3 = *p2;
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	168
64 f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	169 uncomment(line);
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	170 expr = macroexpand(p2, line, strlen(line), true);
16 9dda765ee85c expression evaluator David A. Holland parents: 15 diff changeset	171 val = eval(&p3, expr);
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	172 ifstate_push(p, val);
39 337110e7240a Pass the size to free; it makes debug checking easier. David A. Holland parents: 38 diff changeset	173 dostrfree(expr);
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	174 }
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	175
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	176 static
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	177 void
64 f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	178 d_ifdef(struct place p, struct place p2, char *line)
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	179 {
64 f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	180 uncomment(line);
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	181 oneword("#ifdef", p2, line);
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	182 ifstate_push(p, macro_isdefined(line));
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	183 }
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	184
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	185 static
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	186 void
64 f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	187 d_ifndef(struct place p, struct place p2, char *line)
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	188 {
64 f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	189 uncomment(line);
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	190 oneword("#ifndef", p2, line);
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	191 ifstate_push(p, !macro_isdefined(line));
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	192 }
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	193
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	194 static
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	195 void
64 f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	196 d_elif(struct place p, struct place p2, char *line)
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	197 {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	198 char *expr;
16 9dda765ee85c expression evaluator David A. Holland parents: 15 diff changeset	199 struct place p3 = *p2;
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	200
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	201 if (ifstate->seenelse) {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	202 complain(p, "#elif after #else");
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	203 complain_fail();
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	204 }
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	205
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	206 if (ifstate->evertrue) {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	207 ifstate->curtrue = false;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	208 } else {
64 f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	209 uncomment(line);
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	210 expr = macroexpand(p2, line, strlen(line), true);
16 9dda765ee85c expression evaluator David A. Holland parents: 15 diff changeset	211 ifstate->curtrue = eval(&p3, expr);
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	212 ifstate->evertrue = ifstate->curtrue;
39 337110e7240a Pass the size to free; it makes debug checking easier. David A. Holland parents: 38 diff changeset	213 dostrfree(expr);
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	214 }
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	215 }
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	216
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	217 static
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	218 void
64 f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	219 d_else(struct place p, struct place p2, char *line)
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	220 {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	221 if (ifstate->seenelse) {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	222 complain(p, "Multiple #else directives in one conditional");
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	223 complain_fail();
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	224 }
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	225
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	226 ifstate->curtrue = !ifstate->evertrue;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	227 ifstate->evertrue = true;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	228 ifstate->seenelse = true;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	229 }
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	230
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	231 static
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	232 void
64 f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	233 d_endif(struct place p, struct place p2, char *line)
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	234 {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	235 if (ifstate->prev == NULL) {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	236 complain(p, "Unmatched #endif");
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	237 complain_fail();
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	238 } else {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	239 ifstate_pop();
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	240 }
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	241 }
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	242
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	243 ////////////////////////////////////////////////////////////
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	244 // macros
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	245
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	246 static
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	247 void
64 f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	248 d_define(struct place p, struct place p2, char *line)
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	249 {
18 c08a947d8f30 deal with macro parameters David A. Holland parents: 16 diff changeset	250 size_t pos, argpos;
c08a947d8f30 deal with macro parameters David A. Holland parents: 16 diff changeset	251 struct place p3, p4;
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	252
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	253 /*
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	254 * line may be:
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	255 * macro expansion
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	256 * macro(arg, arg, ...) expansion
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	257 */
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	258
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	259 pos = strcspn(line, " \t\f\v(");
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	260 if (line[pos] == '(') {
18 c08a947d8f30 deal with macro parameters David A. Holland parents: 16 diff changeset	261 line[pos++] = '\0';
c08a947d8f30 deal with macro parameters David A. Holland parents: 16 diff changeset	262 argpos = pos;
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	263 pos = pos + strcspn(line+pos, "()");
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, "Left parenthesis in macro parameters");
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 }
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	270 if (line[pos] != ')') {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	271 p2->column += pos;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	272 complain(p2, "Unclosed macro parameter list");
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	273 complain_fail();
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	274 return;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	275 }
18 c08a947d8f30 deal with macro parameters David A. Holland parents: 16 diff changeset	276 line[pos++] = '\0';
36 a489cc223483 Don't demand space after the macro argument parenthesis. David A. Holland parents: 30 diff changeset	277 #if 0
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	278 if (!strchr(ws, line[pos])) {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	279 p2->column += pos;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	280 complain(p2, "Trash after macro parameter list");
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	281 complain_fail();
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	282 return;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	283 }
36 a489cc223483 Don't demand space after the macro argument parenthesis. David A. Holland parents: 30 diff changeset	284 #endif
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	285 } else if (line[pos] == '\0') {
18 c08a947d8f30 deal with macro parameters David A. Holland parents: 16 diff changeset	286 argpos = 0;
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	287 } else {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	288 line[pos++] = '\0';
18 c08a947d8f30 deal with macro parameters David A. Holland parents: 16 diff changeset	289 argpos = 0;
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	290 }
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	291
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	292 pos += strspn(line+pos, ws);
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	293
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	294 p3 = *p2;
18 c08a947d8f30 deal with macro parameters David A. Holland parents: 16 diff changeset	295 p3.column += argpos;
c08a947d8f30 deal with macro parameters David A. Holland parents: 16 diff changeset	296
c08a947d8f30 deal with macro parameters David A. Holland parents: 16 diff changeset	297 p4 = *p2;
c08a947d8f30 deal with macro parameters David A. Holland parents: 16 diff changeset	298 p4.column += pos;
c08a947d8f30 deal with macro parameters David A. Holland parents: 16 diff changeset	299
c08a947d8f30 deal with macro parameters David A. Holland parents: 16 diff changeset	300 if (argpos) {
c08a947d8f30 deal with macro parameters David A. Holland parents: 16 diff changeset	301 macro_define_params(p2, line, &p3,
c08a947d8f30 deal with macro parameters David A. Holland parents: 16 diff changeset	302 line + argpos, &p4,
c08a947d8f30 deal with macro parameters David A. Holland parents: 16 diff changeset	303 line + pos);
c08a947d8f30 deal with macro parameters David A. Holland parents: 16 diff changeset	304 } else {
c08a947d8f30 deal with macro parameters David A. Holland parents: 16 diff changeset	305 macro_define_plain(p2, line, &p4, line + pos);
c08a947d8f30 deal with macro parameters David A. Holland parents: 16 diff changeset	306 }
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	307 }
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	308
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	309 static
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	310 void
64 f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	311 d_undef(struct place p, struct place p2, char *line)
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	312 {
64 f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	313 uncomment(line);
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	314 oneword("#undef", p2, line);
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	315 macro_undef(line);
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	316 }
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	317
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	318 ////////////////////////////////////////////////////////////
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	319 // includes
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	320
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	321 static
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	322 bool
64 f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	323 tryinclude(struct place p, char line)
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	324 {
64 f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	325 size_t len;
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	326
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	327 len = strlen(line);
15 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_readquote(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 if (len > 2 && line[0] == '<' && line[len-1] == '>') {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	335 line[len-1] = '\0';
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	336 file_readbracket(p, line+1);
62 90c6052410ce Don't truncate the candidate include path strings. David A. Holland parents: 49 diff changeset	337 line[len-1] = '>';
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	338 return true;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	339 }
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	340 return false;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	341 }
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	342
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	343 static
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	344 void
64 f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	345 d_include(struct place p, struct place p2, char *line)
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	346 {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	347 char *text;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	348
64 f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	349 uncomment(line);
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	350 if (tryinclude(p, line)) {
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	351 return;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	352 }
64 f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	353 text = macroexpand(p2, line, strlen(line), false);
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	354 if (tryinclude(p, text)) {
39 337110e7240a Pass the size to free; it makes debug checking easier. David A. Holland parents: 38 diff changeset	355 dostrfree(text);
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	356 return;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	357 }
39 337110e7240a Pass the size to free; it makes debug checking easier. David A. Holland parents: 38 diff changeset	358 dostrfree(text);
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	359 complain(p, "Illegal #include directive");
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	360 complain_fail();
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	361 }
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	362
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	363 static
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	364 void
64 f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	365 d_line(struct place p, struct place p2, char *line)
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	366 {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	367 /* XXX */
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	368 complain(p, "Sorry, no #line yet");
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	369 }
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	370
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	371 ////////////////////////////////////////////////////////////
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	372 // messages
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	373
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	374 static
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	375 void
64 f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	376 d_warning(struct place p, struct place p2, char *line)
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	377 {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	378 char *msg;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	379
64 f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	380 msg = macroexpand(p2, line, strlen(line), false);
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	381 complain(p, "#warning: %s", msg);
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	382 if (mode.werror) {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	383 complain_fail();
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	384 }
39 337110e7240a Pass the size to free; it makes debug checking easier. David A. Holland parents: 38 diff changeset	385 dostrfree(msg);
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	386 }
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	387
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	388 static
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	389 void
64 f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	390 d_error(struct place p, struct place p2, char *line)
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	391 {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	392 char *msg;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	393
64 f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	394 msg = macroexpand(p2, line, strlen(line), false);
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	395 complain(p, "#error: %s", msg);
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	396 complain_fail();
39 337110e7240a Pass the size to free; it makes debug checking easier. David A. Holland parents: 38 diff changeset	397 dostrfree(msg);
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	398 }
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	399
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	400 ////////////////////////////////////////////////////////////
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	401 // other
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	402
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	403 static
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	404 void
64 f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	405 d_pragma(struct place p, struct place p2, char *line)
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	406 {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	407 complain(p, "#pragma %s", line);
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	408 complain_fail();
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	409 }
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	410
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	411 ////////////////////////////////////////////////////////////
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	412 // directive table
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	413
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	414 static const struct {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	415 const char *name;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	416 bool ifskip;
64 f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	417 void (func)(struct place , struct place , char line);
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	418 } directives[] = {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	419 { "define", true, d_define },
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	420 { "elif", false, d_elif },
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	421 { "else", false, d_else },
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	422 { "endif", false, d_endif },
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	423 { "error", true, d_error },
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	424 { "if", false, d_if },
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	425 { "ifdef", false, d_ifdef },
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	426 { "ifndef", false, d_ifndef },
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	427 { "include", true, d_include },
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	428 { "line", true, d_line },
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	429 { "pragma", true, d_pragma },
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	430 { "undef", true, d_undef },
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	431 { "warning", true, d_warning },
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	432 };
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	433 static const unsigned numdirectives = HOWMANY(directives);
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	434
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	435 static
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	436 void
64 f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	437 directive_gotdirective(struct place p, char line)
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	438 {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	439 struct place p2;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	440 size_t len, skip;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	441 unsigned i;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	442
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	443 p2 = *p;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	444 for (i=0; i<numdirectives; i++) {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	445 len = strlen(directives[i].name);
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	446 if (!strncmp(line, directives[i].name, len) &&
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	447 strchr(ws, line[len])) {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	448 if (directives[i].ifskip && !ifstate->curtrue) {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	449 return;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	450 }
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	451 skip = len + strspn(line+len, ws);
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	452 p2.column += skip;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	453 line += skip;
64 f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	454
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	455 len = strlen(line);
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	456 len = notrailingws(line, len);
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	457 if (len < strlen(line)) {
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	458 line[len] = '\0';
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	459 }
f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	460 directives[i].func(p, &p2, line);
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	461 return;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	462 }
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	463 }
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	464 skip = strcspn(line, ws);
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	465 complain(p, "Unknown directive #%.*s", (int)skip, line);
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	466 complain_fail();
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	467 }
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	468
49 8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	469 /*
77 123168887da8 Clean out old not-really-working nested comment handling. David A. Holland parents: 72 diff changeset	470 * Check for nested comment delimiters in LINE.
49 8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	471 */
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	472 static
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	473 size_t
77 123168887da8 Clean out old not-really-working nested comment handling. David A. Holland parents: 72 diff changeset	474 directive_scancomments(const struct place p, char line, size_t len)
49 8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	475 {
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	476 size_t pos;
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	477 bool incomment;
77 123168887da8 Clean out old not-really-working nested comment handling. David A. Holland parents: 72 diff changeset	478 struct place p2;
49 8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	479
77 123168887da8 Clean out old not-really-working nested comment handling. David A. Holland parents: 72 diff changeset	480 p2 = *p;
123168887da8 Clean out old not-really-working nested comment handling. David A. Holland parents: 72 diff changeset	481 incomment = 0;
49 8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	482 for (pos = 0; pos+1 < len; pos++) {
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	483 if (line[pos] == '/' && line[pos+1] == '*') {
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	484 if (incomment) {
77 123168887da8 Clean out old not-really-working nested comment handling. David A. Holland parents: 72 diff changeset	485 complain(&p2, "Warning: %c%c within comment",
123168887da8 Clean out old not-really-working nested comment handling. David A. Holland parents: 72 diff changeset	486 '/', '*');
123168887da8 Clean out old not-really-working nested comment handling. David A. Holland parents: 72 diff changeset	487 if (mode.werror) {
123168887da8 Clean out old not-really-working nested comment handling. David A. Holland parents: 72 diff changeset	488 complain_failed();
123168887da8 Clean out old not-really-working nested comment handling. David A. Holland parents: 72 diff changeset	489 }
49 8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	490 } else {
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	491 incomment = true;
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	492 }
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	493 } else if (line[pos] == '*' && line[pos+1] == '/') {
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	494 if (incomment) {
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	495 incomment = false;
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	496 } else {
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	497 /* stray end-comment; should we care? */
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 }
77 123168887da8 Clean out old not-really-working nested comment handling. David A. Holland parents: 72 diff changeset	500 if (line[pos] == '\n') {
123168887da8 Clean out old not-really-working nested comment handling. David A. Holland parents: 72 diff changeset	501 p2.line++;
123168887da8 Clean out old not-really-working nested comment handling. David A. Holland parents: 72 diff changeset	502 p2.column = 0;
123168887da8 Clean out old not-really-working nested comment handling. David A. Holland parents: 72 diff changeset	503 } else {
123168887da8 Clean out old not-really-working nested comment handling. David A. Holland parents: 72 diff changeset	504 p2.column++;
123168887da8 Clean out old not-really-working nested comment handling. David A. Holland parents: 72 diff changeset	505 }
49 8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	506 }
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	507
77 123168887da8 Clean out old not-really-working nested comment handling. David A. Holland parents: 72 diff changeset	508 /* multiline comments are supposed to arrive in a single buffer */
123168887da8 Clean out old not-really-working nested comment handling. David A. Holland parents: 72 diff changeset	509 assert(!incomment);
49 8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	510 return len;
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	511 }
8a204d153398 Intercept multiline comments earlier. Leave same-line comments alone. David A. Holland parents: 39 diff changeset	512
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	513 void
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	514 directive_gotline(struct place p, char line, size_t len)
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	515 {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	516 size_t skip;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	517
77 123168887da8 Clean out old not-really-working nested comment handling. David A. Holland parents: 72 diff changeset	518 if (warns.nestcomment) {
123168887da8 Clean out old not-really-working nested comment handling. David A. Holland parents: 72 diff changeset	519 directive_scancomments(p, line, len);
49 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
66 f8507e5ed84c Recognize directive lines only when the # is exactly in column 0. David A. Holland parents: 64 diff changeset	522 /* check if we have a directive line (# exactly in column 0) */
77 123168887da8 Clean out old not-really-working nested comment handling. David A. Holland parents: 72 diff changeset	523 if (line[0] == '#') {
66 f8507e5ed84c Recognize directive lines only when the # is exactly in column 0. David A. Holland parents: 64 diff changeset	524 skip = 1 + strspn(line + 1, ws);
77 123168887da8 Clean out old not-really-working nested comment handling. David A. Holland parents: 72 diff changeset	525 assert(skip <= len);
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	526 p->column += skip;
64 f50b4ea6cbfe Prune single-line comments from (most) directive lines. David A. Holland parents: 62 diff changeset	527 assert(line[len] == '\0');
77 123168887da8 Clean out old not-really-working nested comment handling. David A. Holland parents: 72 diff changeset	528 directive_gotdirective(p, line+skip /, length = len-skip /);
123168887da8 Clean out old not-really-working nested comment handling. David A. Holland parents: 72 diff changeset	529 p->column += len-skip;
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	530 } else if (ifstate->curtrue) {
77 123168887da8 Clean out old not-really-working nested comment handling. David A. Holland parents: 72 diff changeset	531 macro_sendline(p, line, len);
123168887da8 Clean out old not-really-working nested comment handling. David A. Holland parents: 72 diff changeset	532 p->column += len;
15 f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	533 }
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	534 }
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	535
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	536 void
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	537 directive_goteof(struct place *p)
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	538 {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	539 while (ifstate->prev != NULL) {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	540 complain(p, "Missing #endif");
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	541 complain(&ifstate->startplace, "...opened at this point");
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	542 complain_failed();
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	543 ifstate_pop();
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	544 }
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	545 macro_sendeof(p);
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	546 }
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	547
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	548 ////////////////////////////////////////////////////////////
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	549 // module initialization
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	550
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	551 void
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	552 directive_init(void)
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	553 {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	554 ifstate = ifstate_create(NULL, NULL, true);
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	555 }
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	556
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	557 void
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	558 directive_cleanup(void)
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	559 {
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	560 assert(ifstate->prev == NULL);
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	561 ifstate_destroy(ifstate);
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	562 ifstate = NULL;
f6177d3ed5c2 handle directives David A. Holland parents: diff changeset	563 }

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

annotate directive.c @ 77:123168887da8