3 TREELANG Compiler almost main (tree1)
4 Called by GCC's toplev.c
6 Copyright (C) 1986, 87, 89, 92-96, 1997, 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
8 This program is free software; you can redistribute it and/or modify it
9 under the terms of the GNU General Public License as published by the
10 Free Software Foundation; either version 2, or (at your option) any
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, 59 Temple Place - Suite 330,
21 Boston, MA 02111-1307, USA.
23 In other words, you are welcome to use, share and improve this program.
24 You are forbidden to forbid anyone else to use, share and improve
25 what you give them. Help stamp out software-hoarding!
27 ---------------------------------------------------------------------------
29 Written by Tim Josling 1999, 2000, 2001, based in part on other
30 parts of the GCC compiler.
36 #include "coretypes.h"
43 #include "diagnostic.h"
48 extern int yyparse (void);
50 /* Linked list of symbols - all must be unique in treelang. */
52 static GTY(()) struct prod_token_parm_item *symbol_table = NULL;
54 /* Language for usage for messages. */
56 const char *const language_string = "TREELANG - sample front end for GCC ";
58 /* Local prototypes. */
62 /* Global variables. */
64 extern struct cbl_tree_struct_parse_tree_top* parse_tree_top;
70 /* Trace the parser. */
71 unsigned int option_parser_trace = 0;
73 /* Trace the lexical analysis. */
75 unsigned int option_lexer_trace = 0;
79 /* Local variables. */
81 /* This is 1 if we have output the version string. */
83 static int version_done = 0;
85 /* Variable nesting level. */
87 static unsigned int work_nesting_level = 0;
89 /* Process one switch - called by toplev.c. */
92 treelang_decode_option (num_options_left, first_option_left)
93 int num_options_left ATTRIBUTE_UNUSED;
94 char** first_option_left;
98 Process options - bear in mind I may get options that are really
99 meant for someone else (eg the main compiler) so I have to be very
104 if (first_option_left[0][0] != '-')
107 switch (first_option_left[0][1])
110 if (!strcmp (first_option_left[0],"--help"))
114 fputs (language_string, stdout);
115 fputs (version_string, stdout);
116 fputs ("\n", stdout);
119 fprintf (stdout, "Usage: tree1 [switches] -o output input\n");
125 if (!strcmp (first_option_left[0],"-v"))
129 fputs (language_string, stdout);
130 fputs (version_string, stdout);
131 fputs ("\n", stdout);
139 if (!strcmp (first_option_left[0],"-y"))
141 option_lexer_trace = 1;
142 option_parser_trace = 1;
148 if (!strcmp (first_option_left[0],"-fparser-trace"))
150 option_parser_trace = 1;
153 if (!strcmp (first_option_left[0],"-flexer-trace"))
155 option_lexer_trace = 1;
161 if (!strcmp (first_option_left[0],"-w"))
163 /* Tolerate this option but ignore it - we always put out
170 if (!strcmp (first_option_left[0],"-Wall"))
183 /* Language dependent parser setup. */
188 input_filename = main_input_filename;
191 /* Init decls etc. */
193 treelang_init_decl_processing ();
195 /* This error will not happen from GCC as it will always create a
197 if (!input_filename || input_filename[0] == ' ' || !input_filename[0])
201 fprintf (stderr, "No input file specified, try --help for help\n");
208 yyin = fopen (input_filename, "r");
211 fprintf (stderr, "Unable to open input file %s\n", input_filename);
218 /* Language dependent wrapup. */
221 treelang_finish (void)
226 /* Parse a file. Debug flag doesn't seem to work. */
229 treelang_parse_file (int debug_flag ATTRIBUTE_UNUSED)
235 /* Allocate SIZE bytes and clear them. Not to be used for strings
236 which must go in stringpool. */
239 my_malloc (size_t size)
242 mem = ggc_alloc (size);
245 fprintf (stderr, "\nOut of memory\n");
248 memset (mem, 0, size);
252 /* Look up a name in PROD->SYMBOL_TABLE_NAME in the symbol table;
253 return the symbol table entry from the symbol table if found there,
256 struct prod_token_parm_item*
257 lookup_tree_name (struct prod_token_parm_item *prod)
259 struct prod_token_parm_item *this;
260 struct prod_token_parm_item *this_tok;
261 struct prod_token_parm_item *tok;
265 tok = SYMBOL_TABLE_NAME (prod);
268 for (this = symbol_table; this; this = this->tp.pro.next)
271 this_tok = this->tp.pro.main_token;
272 sanity_check (this_tok);
273 if (tok->tp.tok.length != this_tok->tp.tok.length)
275 if (memcmp (tok->tp.tok.chars, this_tok->tp.tok.chars, this_tok->tp.tok.length))
277 if (option_parser_trace)
278 fprintf (stderr, "Found symbol %s (%i:%i) as %i \n",
280 tok->tp.tok.location.line, tok->tp.tok.charno,
281 NUMERIC_TYPE (this));
284 if (option_parser_trace)
285 fprintf (stderr, "Not found symbol %s (%i:%i) as %i \n",
287 tok->tp.tok.location.line, tok->tp.tok.charno, tok->type);
291 /* Insert name PROD into the symbol table. Return 1 if duplicate, 0 if OK. */
294 insert_tree_name (struct prod_token_parm_item *prod)
296 struct prod_token_parm_item *tok;
297 tok = SYMBOL_TABLE_NAME (prod);
299 if (lookup_tree_name (prod))
301 fprintf (stderr, "%s:%i:%i duplicate name %s\n",
302 tok->tp.tok.location.file, tok->tp.tok.location.line,
303 tok->tp.tok.charno, tok->tp.tok.chars);
307 prod->tp.pro.next = symbol_table;
308 NESTING_LEVEL (prod) = work_nesting_level;
313 /* Create a struct productions of type TYPE, main token MAIN_TOK. */
315 struct prod_token_parm_item *
316 make_production (int type, struct prod_token_parm_item *main_tok)
318 struct prod_token_parm_item *prod;
319 prod = my_malloc (sizeof (struct prod_token_parm_item));
320 prod->category = production_category;
322 prod->tp.pro.main_token = main_tok;
326 /* Abort if ITEM is not a valid structure, based on 'category'. */
329 sanity_check (struct prod_token_parm_item *item)
331 switch (item->category)
334 case production_category:
335 case parameter_category:
343 /* New garbage collection regime see gty.texi. */
344 #include "gt-treelang-tree1.h"
345 /*#include "gt-treelang-treelang.h"*/
346 #include "gtype-treelang.h"