Mercurial > hg > index.cgi

annotate lwcc/cc-main.c @ 583:000381ee2d5c default tip

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Guard against single operand multiplication when detecting like terms This *shouldn't* happen, but it apparently does in some pathological cases so guard against a single operand multiplication to prevent a crash.
author William Astle <lost@l-w.ca>
date Mon, 04 Nov 2024 23:48:23 -0700
parents c3099c5d9d3e
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
311
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
1 /*
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
2 lwcc/cpp-main.c
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
3
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
4 Copyright © 2013 William Astle
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
5
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
6 This file is part of LWTOOLS.
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
7
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
8 LWTOOLS is free software: you can redistribute it and/or modify it under the
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
9 terms of the GNU General Public License as published by the Free Software
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
10 Foundation, either version 3 of the License, or (at your option) any later
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
11 version.
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
12
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
13 This program is distributed in the hope that it will be useful, but WITHOUT
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
16 more details.
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
17
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
18 You should have received a copy of the GNU General Public License along with
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
19 this program. If not, see <http://www.gnu.org/licenses/>.
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
20 */
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
21
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
22 #include <errno.h>
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
23 #include <stdarg.h>
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
24 #include <stdio.h>
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
25 #include <stdlib.h>
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
26 #include <string.h>
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
27
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
28 #include <lw_stringlist.h>
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
29 #include <lw_cmdline.h>
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
30 #include <lw_string.h>
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
31
496
a38542cf4cc6 Make lwcc stuff compile (on Linux anyway)
William Astle <lost@l-w.ca>
parents: 312
diff changeset
32 #include <version.h>
a38542cf4cc6 Make lwcc stuff compile (on Linux anyway)
William Astle <lost@l-w.ca>
parents: 312
diff changeset
33
311
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
34 #include "cpp.h"
312
41118fb0a8f2 Add no-op parser and parse tree infrastructure
William Astle <lost@l-w.ca>
parents: 311
diff changeset
35 #include "tree.h"
311
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
36
312
41118fb0a8f2 Add no-op parser and parse tree infrastructure
William Astle <lost@l-w.ca>
parents: 311
diff changeset
37 node_t *process_file(const char *);
311
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
38 static void do_error(const char *f, ...);
312
41118fb0a8f2 Add no-op parser and parse tree infrastructure
William Astle <lost@l-w.ca>
parents: 311
diff changeset
39 extern node_t *parse_program(struct preproc_info *pp);
499
c3099c5d9d3e Add very simple code generator
William Astle <lost@l-w.ca>
parents: 496
diff changeset
40 extern void generate_code(node_t *n, FILE *of);
312
41118fb0a8f2 Add no-op parser and parse tree infrastructure
William Astle <lost@l-w.ca>
parents: 311
diff changeset
41
41118fb0a8f2 Add no-op parser and parse tree infrastructure
William Astle <lost@l-w.ca>
parents: 311
diff changeset
42 node_t *program_tree = NULL;
311
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
43
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
44 /* command line option handling */
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
45 #define PROGVER "lwcc-cc from " PACKAGE_STRING
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
46 char *program_name;
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
47
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
48 /* input files */
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
49 lw_stringlist_t input_files;
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
50 lw_stringlist_t includedirs;
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
51 lw_stringlist_t sysincludedirs;
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
52 lw_stringlist_t macrolist;
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
53
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
54 /* various flags */
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
55 int trigraphs = 0;
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
56 char *output_file = NULL;
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
57 FILE *output_fp = NULL;
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
58
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
59 static struct lw_cmdline_options options[] =
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
60 {
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
61 { "output", 'o', "FILE", 0, "Output to FILE"},
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
62 { "include", 'i', "FILE", 0, "Pre-include FILE" },
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
63 { "includedir", 'I', "PATH", 0, "Add entry to the user include path" },
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
64 { "sincludedir", 'S', "PATH", 0, "Add entry to the system include path" },
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
65 { "define", 'D', "SYM[=VAL]",0, "Automatically define SYM to be VAL (or 1)"},
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
66 { "trigraphs", 0x100, NULL, 0, "Enable interpretation of trigraphs" },
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
67 { 0 }
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
68 };
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
69
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
70 static int parse_opts(int key, char *arg, void *state)
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
71 {
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
72 switch (key)
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
73 {
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
74 case 'o':
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
75 if (output_file)
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
76 do_error("Output file specified more than once.");
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
77 output_file = arg;
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
78 break;
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
79
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
80 case 0x100:
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
81 trigraphs = 1;
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
82 break;
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
83
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
84 case 'I':
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
85 lw_stringlist_addstring(includedirs, arg);
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
86 break;
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
87
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
88 case 'S':
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
89 lw_stringlist_addstring(sysincludedirs, arg);
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
90 break;
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
91
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
92 case 'D':
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
93 lw_stringlist_addstring(macrolist, arg);
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
94 break;
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
95
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
96 case lw_cmdline_key_end:
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
97 break;
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
98
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
99 case lw_cmdline_key_arg:
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
100 lw_stringlist_addstring(input_files, arg);
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
101 break;
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
102
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
103 default:
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
104 return lw_cmdline_err_unknown;
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
105 }
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
106 return 0;
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
107 }
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
108
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
109 static struct lw_cmdline_parser cmdline_parser =
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
110 {
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
111 options,
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
112 parse_opts,
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
113 "INPUTFILE",
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
114 "lwcc-cc - C compiler for lwcc",
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
115 PROGVER
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
116 };
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
117
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
118 int main(int argc, char **argv)
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
119 {
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
120 program_name = argv[0];
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
121 int retval = 0;
312
41118fb0a8f2 Add no-op parser and parse tree infrastructure
William Astle <lost@l-w.ca>
parents: 311
diff changeset
122 node_t *n;
311
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
123
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
124 input_files = lw_stringlist_create();
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
125 includedirs = lw_stringlist_create();
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
126 sysincludedirs = lw_stringlist_create();
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
127 macrolist = lw_stringlist_create();
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
128
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
129 /* parse command line arguments */
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
130 lw_cmdline_parse(&cmdline_parser, argc, argv, 0, 0, NULL);
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
131
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
132 /* set up output file */
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
133 if (output_file == NULL || strcmp(output_file, "-") == 0)
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
134 {
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
135 output_fp = stdout;
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
136 }
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
137 else
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
138 {
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
139 output_fp = fopen(output_file, "wb");
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
140 if (output_fp == NULL)
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
141 {
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
142 do_error("Failed to create output file %s: %s", output_file, strerror(errno));
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
143 }
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
144 }
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
145
312
41118fb0a8f2 Add no-op parser and parse tree infrastructure
William Astle <lost@l-w.ca>
parents: 311
diff changeset
146 program_tree = node_create(NODE_PROGRAM);
41118fb0a8f2 Add no-op parser and parse tree infrastructure
William Astle <lost@l-w.ca>
parents: 311
diff changeset
147
311
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
148 if (lw_stringlist_nstrings(input_files) == 0)
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
149 {
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
150 /* if no input files, work on stdin */
312
41118fb0a8f2 Add no-op parser and parse tree infrastructure
William Astle <lost@l-w.ca>
parents: 311
diff changeset
151 n = process_file("-");
41118fb0a8f2 Add no-op parser and parse tree infrastructure
William Astle <lost@l-w.ca>
parents: 311
diff changeset
152 if (!n)
41118fb0a8f2 Add no-op parser and parse tree infrastructure
William Astle <lost@l-w.ca>
parents: 311
diff changeset
153 retval = 1;
41118fb0a8f2 Add no-op parser and parse tree infrastructure
William Astle <lost@l-w.ca>
parents: 311
diff changeset
154 else
41118fb0a8f2 Add no-op parser and parse tree infrastructure
William Astle <lost@l-w.ca>
parents: 311
diff changeset
155 node_addchild(program_tree, n);
311
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
156 }
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
157 else
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
158 {
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
159 char *s;
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
160 lw_stringlist_reset(input_files);
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
161 for (s = lw_stringlist_current(input_files); s; s = lw_stringlist_next(input_files))
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
162 {
312
41118fb0a8f2 Add no-op parser and parse tree infrastructure
William Astle <lost@l-w.ca>
parents: 311
diff changeset
163 n = process_file(s);
41118fb0a8f2 Add no-op parser and parse tree infrastructure
William Astle <lost@l-w.ca>
parents: 311
diff changeset
164 if (!n)
41118fb0a8f2 Add no-op parser and parse tree infrastructure
William Astle <lost@l-w.ca>
parents: 311
diff changeset
165 retval = 1;
311
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
166 if (retval != 0)
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
167 break;
312
41118fb0a8f2 Add no-op parser and parse tree infrastructure
William Astle <lost@l-w.ca>
parents: 311
diff changeset
168 node_addchild(program_tree, n);
311
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
169 }
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
170 }
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
171 lw_stringlist_destroy(input_files);
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
172 lw_stringlist_destroy(includedirs);
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
173 lw_stringlist_destroy(sysincludedirs);
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
174 lw_stringlist_destroy(macrolist);
312
41118fb0a8f2 Add no-op parser and parse tree infrastructure
William Astle <lost@l-w.ca>
parents: 311
diff changeset
175
41118fb0a8f2 Add no-op parser and parse tree infrastructure
William Astle <lost@l-w.ca>
parents: 311
diff changeset
176 node_display(program_tree, stdout);
499
c3099c5d9d3e Add very simple code generator
William Astle <lost@l-w.ca>
parents: 496
diff changeset
177
c3099c5d9d3e Add very simple code generator
William Astle <lost@l-w.ca>
parents: 496
diff changeset
178 // generate output
c3099c5d9d3e Add very simple code generator
William Astle <lost@l-w.ca>
parents: 496
diff changeset
179 generate_code(program_tree, output_fp);
c3099c5d9d3e Add very simple code generator
William Astle <lost@l-w.ca>
parents: 496
diff changeset
180
312
41118fb0a8f2 Add no-op parser and parse tree infrastructure
William Astle <lost@l-w.ca>
parents: 311
diff changeset
181 node_destroy(program_tree);
311
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
182 exit(retval);
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
183 }
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
184
312
41118fb0a8f2 Add no-op parser and parse tree infrastructure
William Astle <lost@l-w.ca>
parents: 311
diff changeset
185 node_t *process_file(const char *fn)
311
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
186 {
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
187 struct preproc_info *pp;
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
188 char *tstr;
312
41118fb0a8f2 Add no-op parser and parse tree infrastructure
William Astle <lost@l-w.ca>
parents: 311
diff changeset
189 node_t *n;
41118fb0a8f2 Add no-op parser and parse tree infrastructure
William Astle <lost@l-w.ca>
parents: 311
diff changeset
190
311
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
191 pp = preproc_init(fn);
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
192 if (!pp)
312
41118fb0a8f2 Add no-op parser and parse tree infrastructure
William Astle <lost@l-w.ca>
parents: 311
diff changeset
193 return NULL;
311
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
194
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
195 /* set up the include paths */
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
196 lw_stringlist_reset(includedirs);
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
197 for (tstr = lw_stringlist_current(includedirs); tstr; tstr = lw_stringlist_next(includedirs))
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
198 {
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
199 preproc_add_include(pp, tstr, 0);
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
200 }
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
201
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
202 lw_stringlist_reset(sysincludedirs);
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
203 for (tstr = lw_stringlist_current(sysincludedirs); tstr; tstr = lw_stringlist_next(sysincludedirs))
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
204 {
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
205 preproc_add_include(pp, tstr, 1);
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
206 }
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
207
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
208 /* set up pre-defined macros */
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
209 lw_stringlist_reset(macrolist);
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
210 for (tstr = lw_stringlist_current(macrolist); tstr; tstr = lw_stringlist_next(macrolist))
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
211 {
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
212 preproc_add_macro(pp, tstr);
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
213 }
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
214
312
41118fb0a8f2 Add no-op parser and parse tree infrastructure
William Astle <lost@l-w.ca>
parents: 311
diff changeset
215 n = parse_program(pp);
311
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
216 preproc_finish(pp);
499
c3099c5d9d3e Add very simple code generator
William Astle <lost@l-w.ca>
parents: 496
diff changeset
217
312
41118fb0a8f2 Add no-op parser and parse tree infrastructure
William Astle <lost@l-w.ca>
parents: 311
diff changeset
218 return n;
311
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
219 }
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
220
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
221 static void do_error(const char *f, ...)
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
222 {
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
223 va_list args;
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
224 va_start(args, f);
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
225 fprintf(stderr, "ERROR: ");
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
226 vfprintf(stderr, f, args);
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
227 va_end(args);
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
228 fprintf(stderr, "\n");
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
229 exit(1);
7957e90d0a35 Add skeleton compiler target to build
William Astle <lost@l-w.ca>
parents:
diff changeset
230 }