1*e4b17023SJohn Marino /* Preprocess only, using cpplib.
2*e4b17023SJohn Marino Copyright (C) 1995, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2007,
3*e4b17023SJohn Marino 2008, 2009, 2010 Free Software Foundation, Inc.
4*e4b17023SJohn Marino Written by Per Bothner, 1994-95.
5*e4b17023SJohn Marino
6*e4b17023SJohn Marino This program is free software; you can redistribute it and/or modify it
7*e4b17023SJohn Marino under the terms of the GNU General Public License as published by the
8*e4b17023SJohn Marino Free Software Foundation; either version 3, or (at your option) any
9*e4b17023SJohn Marino later version.
10*e4b17023SJohn Marino
11*e4b17023SJohn Marino This program is distributed in the hope that it will be useful,
12*e4b17023SJohn Marino but WITHOUT ANY WARRANTY; without even the implied warranty of
13*e4b17023SJohn Marino MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14*e4b17023SJohn Marino GNU General Public License for more details.
15*e4b17023SJohn Marino
16*e4b17023SJohn Marino You should have received a copy of the GNU General Public License
17*e4b17023SJohn Marino along with this program; see the file COPYING3. If not see
18*e4b17023SJohn Marino <http://www.gnu.org/licenses/>. */
19*e4b17023SJohn Marino
20*e4b17023SJohn Marino #include "config.h"
21*e4b17023SJohn Marino #include "system.h"
22*e4b17023SJohn Marino #include "coretypes.h"
23*e4b17023SJohn Marino #include "cpplib.h"
24*e4b17023SJohn Marino #include "../libcpp/internal.h"
25*e4b17023SJohn Marino #include "tree.h"
26*e4b17023SJohn Marino #include "c-common.h" /* For flags. */
27*e4b17023SJohn Marino #include "c-pragma.h" /* For parse_in. */
28*e4b17023SJohn Marino
29*e4b17023SJohn Marino /* Encapsulates state used to convert a stream of tokens into a text
30*e4b17023SJohn Marino file. */
31*e4b17023SJohn Marino static struct
32*e4b17023SJohn Marino {
33*e4b17023SJohn Marino FILE *outf; /* Stream to write to. */
34*e4b17023SJohn Marino const cpp_token *prev; /* Previous token. */
35*e4b17023SJohn Marino const cpp_token *source; /* Source token for spacing. */
36*e4b17023SJohn Marino int src_line; /* Line number currently being written. */
37*e4b17023SJohn Marino unsigned char printed; /* Nonzero if something output at line. */
38*e4b17023SJohn Marino bool first_time; /* pp_file_change hasn't been called yet. */
39*e4b17023SJohn Marino const char *src_file; /* Current source file. */
40*e4b17023SJohn Marino } print;
41*e4b17023SJohn Marino
42*e4b17023SJohn Marino /* Defined and undefined macros being queued for output with -dU at
43*e4b17023SJohn Marino the next newline. */
44*e4b17023SJohn Marino typedef struct macro_queue
45*e4b17023SJohn Marino {
46*e4b17023SJohn Marino struct macro_queue *next; /* Next macro in the list. */
47*e4b17023SJohn Marino char *macro; /* The name of the macro if not
48*e4b17023SJohn Marino defined, the full definition if
49*e4b17023SJohn Marino defined. */
50*e4b17023SJohn Marino } macro_queue;
51*e4b17023SJohn Marino static macro_queue *define_queue, *undef_queue;
52*e4b17023SJohn Marino
53*e4b17023SJohn Marino /* General output routines. */
54*e4b17023SJohn Marino static void scan_translation_unit (cpp_reader *);
55*e4b17023SJohn Marino static void print_lines_directives_only (int, const void *, size_t);
56*e4b17023SJohn Marino static void scan_translation_unit_directives_only (cpp_reader *);
57*e4b17023SJohn Marino static void scan_translation_unit_trad (cpp_reader *);
58*e4b17023SJohn Marino static void account_for_newlines (const unsigned char *, size_t);
59*e4b17023SJohn Marino static int dump_macro (cpp_reader *, cpp_hashnode *, void *);
60*e4b17023SJohn Marino static void dump_queued_macros (cpp_reader *);
61*e4b17023SJohn Marino
62*e4b17023SJohn Marino static void print_line_1 (source_location, const char*, FILE *);
63*e4b17023SJohn Marino static void print_line (source_location, const char *);
64*e4b17023SJohn Marino static void maybe_print_line_1 (source_location, FILE *);
65*e4b17023SJohn Marino static void maybe_print_line (source_location);
66*e4b17023SJohn Marino static void do_line_change (cpp_reader *, const cpp_token *,
67*e4b17023SJohn Marino source_location, int);
68*e4b17023SJohn Marino
69*e4b17023SJohn Marino /* Callback routines for the parser. Most of these are active only
70*e4b17023SJohn Marino in specific modes. */
71*e4b17023SJohn Marino static void cb_line_change (cpp_reader *, const cpp_token *, int);
72*e4b17023SJohn Marino static void cb_define (cpp_reader *, source_location, cpp_hashnode *);
73*e4b17023SJohn Marino static void cb_undef (cpp_reader *, source_location, cpp_hashnode *);
74*e4b17023SJohn Marino static void cb_used_define (cpp_reader *, source_location, cpp_hashnode *);
75*e4b17023SJohn Marino static void cb_used_undef (cpp_reader *, source_location, cpp_hashnode *);
76*e4b17023SJohn Marino static void cb_include (cpp_reader *, source_location, const unsigned char *,
77*e4b17023SJohn Marino const char *, int, const cpp_token **);
78*e4b17023SJohn Marino static void cb_ident (cpp_reader *, source_location, const cpp_string *);
79*e4b17023SJohn Marino static void cb_def_pragma (cpp_reader *, source_location);
80*e4b17023SJohn Marino static void cb_read_pch (cpp_reader *pfile, const char *name,
81*e4b17023SJohn Marino int fd, const char *orig_name);
82*e4b17023SJohn Marino
83*e4b17023SJohn Marino /* Preprocess and output. */
84*e4b17023SJohn Marino void
preprocess_file(cpp_reader * pfile)85*e4b17023SJohn Marino preprocess_file (cpp_reader *pfile)
86*e4b17023SJohn Marino {
87*e4b17023SJohn Marino /* A successful cpp_read_main_file guarantees that we can call
88*e4b17023SJohn Marino cpp_scan_nooutput or cpp_get_token next. */
89*e4b17023SJohn Marino if (flag_no_output && pfile->buffer)
90*e4b17023SJohn Marino {
91*e4b17023SJohn Marino /* Scan -included buffers, then the main file. */
92*e4b17023SJohn Marino while (pfile->buffer->prev)
93*e4b17023SJohn Marino cpp_scan_nooutput (pfile);
94*e4b17023SJohn Marino cpp_scan_nooutput (pfile);
95*e4b17023SJohn Marino }
96*e4b17023SJohn Marino else if (cpp_get_options (pfile)->traditional)
97*e4b17023SJohn Marino scan_translation_unit_trad (pfile);
98*e4b17023SJohn Marino else if (cpp_get_options (pfile)->directives_only
99*e4b17023SJohn Marino && !cpp_get_options (pfile)->preprocessed)
100*e4b17023SJohn Marino scan_translation_unit_directives_only (pfile);
101*e4b17023SJohn Marino else
102*e4b17023SJohn Marino scan_translation_unit (pfile);
103*e4b17023SJohn Marino
104*e4b17023SJohn Marino /* -dM command line option. Should this be elsewhere? */
105*e4b17023SJohn Marino if (flag_dump_macros == 'M')
106*e4b17023SJohn Marino cpp_forall_identifiers (pfile, dump_macro, NULL);
107*e4b17023SJohn Marino
108*e4b17023SJohn Marino /* Flush any pending output. */
109*e4b17023SJohn Marino if (print.printed)
110*e4b17023SJohn Marino putc ('\n', print.outf);
111*e4b17023SJohn Marino }
112*e4b17023SJohn Marino
113*e4b17023SJohn Marino /* Set up the callbacks as appropriate. */
114*e4b17023SJohn Marino void
init_pp_output(FILE * out_stream)115*e4b17023SJohn Marino init_pp_output (FILE *out_stream)
116*e4b17023SJohn Marino {
117*e4b17023SJohn Marino cpp_callbacks *cb = cpp_get_callbacks (parse_in);
118*e4b17023SJohn Marino
119*e4b17023SJohn Marino if (!flag_no_output)
120*e4b17023SJohn Marino {
121*e4b17023SJohn Marino cb->line_change = cb_line_change;
122*e4b17023SJohn Marino /* Don't emit #pragma or #ident directives if we are processing
123*e4b17023SJohn Marino assembly language; the assembler may choke on them. */
124*e4b17023SJohn Marino if (cpp_get_options (parse_in)->lang != CLK_ASM)
125*e4b17023SJohn Marino {
126*e4b17023SJohn Marino cb->ident = cb_ident;
127*e4b17023SJohn Marino cb->def_pragma = cb_def_pragma;
128*e4b17023SJohn Marino }
129*e4b17023SJohn Marino }
130*e4b17023SJohn Marino
131*e4b17023SJohn Marino if (flag_dump_includes)
132*e4b17023SJohn Marino cb->include = cb_include;
133*e4b17023SJohn Marino
134*e4b17023SJohn Marino if (flag_pch_preprocess)
135*e4b17023SJohn Marino {
136*e4b17023SJohn Marino cb->valid_pch = c_common_valid_pch;
137*e4b17023SJohn Marino cb->read_pch = cb_read_pch;
138*e4b17023SJohn Marino }
139*e4b17023SJohn Marino
140*e4b17023SJohn Marino if (flag_dump_macros == 'N' || flag_dump_macros == 'D')
141*e4b17023SJohn Marino {
142*e4b17023SJohn Marino cb->define = cb_define;
143*e4b17023SJohn Marino cb->undef = cb_undef;
144*e4b17023SJohn Marino }
145*e4b17023SJohn Marino
146*e4b17023SJohn Marino if (flag_dump_macros == 'U')
147*e4b17023SJohn Marino {
148*e4b17023SJohn Marino cb->before_define = dump_queued_macros;
149*e4b17023SJohn Marino cb->used_define = cb_used_define;
150*e4b17023SJohn Marino cb->used_undef = cb_used_undef;
151*e4b17023SJohn Marino }
152*e4b17023SJohn Marino
153*e4b17023SJohn Marino /* Initialize the print structure. */
154*e4b17023SJohn Marino print.src_line = 1;
155*e4b17023SJohn Marino print.printed = 0;
156*e4b17023SJohn Marino print.prev = 0;
157*e4b17023SJohn Marino print.outf = out_stream;
158*e4b17023SJohn Marino print.first_time = 1;
159*e4b17023SJohn Marino print.src_file = "";
160*e4b17023SJohn Marino }
161*e4b17023SJohn Marino
162*e4b17023SJohn Marino /* Writes out the preprocessed file, handling spacing and paste
163*e4b17023SJohn Marino avoidance issues. */
164*e4b17023SJohn Marino static void
scan_translation_unit(cpp_reader * pfile)165*e4b17023SJohn Marino scan_translation_unit (cpp_reader *pfile)
166*e4b17023SJohn Marino {
167*e4b17023SJohn Marino bool avoid_paste = false;
168*e4b17023SJohn Marino bool do_line_adjustments
169*e4b17023SJohn Marino = cpp_get_options (parse_in)->lang != CLK_ASM
170*e4b17023SJohn Marino && !flag_no_line_commands;
171*e4b17023SJohn Marino bool in_pragma = false;
172*e4b17023SJohn Marino
173*e4b17023SJohn Marino print.source = NULL;
174*e4b17023SJohn Marino for (;;)
175*e4b17023SJohn Marino {
176*e4b17023SJohn Marino source_location loc;
177*e4b17023SJohn Marino const cpp_token *token = cpp_get_token_with_location (pfile, &loc);
178*e4b17023SJohn Marino
179*e4b17023SJohn Marino if (token->type == CPP_PADDING)
180*e4b17023SJohn Marino {
181*e4b17023SJohn Marino avoid_paste = true;
182*e4b17023SJohn Marino if (print.source == NULL
183*e4b17023SJohn Marino || (!(print.source->flags & PREV_WHITE)
184*e4b17023SJohn Marino && token->val.source == NULL))
185*e4b17023SJohn Marino print.source = token->val.source;
186*e4b17023SJohn Marino continue;
187*e4b17023SJohn Marino }
188*e4b17023SJohn Marino
189*e4b17023SJohn Marino if (token->type == CPP_EOF)
190*e4b17023SJohn Marino break;
191*e4b17023SJohn Marino
192*e4b17023SJohn Marino /* Subtle logic to output a space if and only if necessary. */
193*e4b17023SJohn Marino if (avoid_paste)
194*e4b17023SJohn Marino {
195*e4b17023SJohn Marino int src_line = LOCATION_LINE (loc);
196*e4b17023SJohn Marino
197*e4b17023SJohn Marino if (print.source == NULL)
198*e4b17023SJohn Marino print.source = token;
199*e4b17023SJohn Marino
200*e4b17023SJohn Marino if (src_line != print.src_line
201*e4b17023SJohn Marino && do_line_adjustments
202*e4b17023SJohn Marino && !in_pragma)
203*e4b17023SJohn Marino {
204*e4b17023SJohn Marino do_line_change (pfile, token, loc, false);
205*e4b17023SJohn Marino putc (' ', print.outf);
206*e4b17023SJohn Marino }
207*e4b17023SJohn Marino else if (print.source->flags & PREV_WHITE
208*e4b17023SJohn Marino || (print.prev
209*e4b17023SJohn Marino && cpp_avoid_paste (pfile, print.prev, token))
210*e4b17023SJohn Marino || (print.prev == NULL && token->type == CPP_HASH))
211*e4b17023SJohn Marino putc (' ', print.outf);
212*e4b17023SJohn Marino }
213*e4b17023SJohn Marino else if (token->flags & PREV_WHITE)
214*e4b17023SJohn Marino {
215*e4b17023SJohn Marino int src_line = LOCATION_LINE (loc);
216*e4b17023SJohn Marino
217*e4b17023SJohn Marino if (src_line != print.src_line
218*e4b17023SJohn Marino && do_line_adjustments
219*e4b17023SJohn Marino && !in_pragma)
220*e4b17023SJohn Marino do_line_change (pfile, token, loc, false);
221*e4b17023SJohn Marino putc (' ', print.outf);
222*e4b17023SJohn Marino }
223*e4b17023SJohn Marino
224*e4b17023SJohn Marino avoid_paste = false;
225*e4b17023SJohn Marino print.source = NULL;
226*e4b17023SJohn Marino print.prev = token;
227*e4b17023SJohn Marino if (token->type == CPP_PRAGMA)
228*e4b17023SJohn Marino {
229*e4b17023SJohn Marino const char *space;
230*e4b17023SJohn Marino const char *name;
231*e4b17023SJohn Marino
232*e4b17023SJohn Marino maybe_print_line (token->src_loc);
233*e4b17023SJohn Marino fputs ("#pragma ", print.outf);
234*e4b17023SJohn Marino c_pp_lookup_pragma (token->val.pragma, &space, &name);
235*e4b17023SJohn Marino if (space)
236*e4b17023SJohn Marino fprintf (print.outf, "%s %s", space, name);
237*e4b17023SJohn Marino else
238*e4b17023SJohn Marino fprintf (print.outf, "%s", name);
239*e4b17023SJohn Marino print.printed = 1;
240*e4b17023SJohn Marino in_pragma = true;
241*e4b17023SJohn Marino }
242*e4b17023SJohn Marino else if (token->type == CPP_PRAGMA_EOL)
243*e4b17023SJohn Marino {
244*e4b17023SJohn Marino maybe_print_line (token->src_loc);
245*e4b17023SJohn Marino in_pragma = false;
246*e4b17023SJohn Marino }
247*e4b17023SJohn Marino else
248*e4b17023SJohn Marino {
249*e4b17023SJohn Marino if (cpp_get_options (parse_in)->debug)
250*e4b17023SJohn Marino linemap_dump_location (line_table, token->src_loc,
251*e4b17023SJohn Marino print.outf);
252*e4b17023SJohn Marino cpp_output_token (token, print.outf);
253*e4b17023SJohn Marino }
254*e4b17023SJohn Marino
255*e4b17023SJohn Marino if (token->type == CPP_COMMENT)
256*e4b17023SJohn Marino account_for_newlines (token->val.str.text, token->val.str.len);
257*e4b17023SJohn Marino }
258*e4b17023SJohn Marino }
259*e4b17023SJohn Marino
260*e4b17023SJohn Marino static void
print_lines_directives_only(int lines,const void * buf,size_t size)261*e4b17023SJohn Marino print_lines_directives_only (int lines, const void *buf, size_t size)
262*e4b17023SJohn Marino {
263*e4b17023SJohn Marino print.src_line += lines;
264*e4b17023SJohn Marino fwrite (buf, 1, size, print.outf);
265*e4b17023SJohn Marino }
266*e4b17023SJohn Marino
267*e4b17023SJohn Marino /* Writes out the preprocessed file, handling spacing and paste
268*e4b17023SJohn Marino avoidance issues. */
269*e4b17023SJohn Marino static void
scan_translation_unit_directives_only(cpp_reader * pfile)270*e4b17023SJohn Marino scan_translation_unit_directives_only (cpp_reader *pfile)
271*e4b17023SJohn Marino {
272*e4b17023SJohn Marino struct _cpp_dir_only_callbacks cb;
273*e4b17023SJohn Marino
274*e4b17023SJohn Marino cb.print_lines = print_lines_directives_only;
275*e4b17023SJohn Marino cb.maybe_print_line = maybe_print_line;
276*e4b17023SJohn Marino
277*e4b17023SJohn Marino _cpp_preprocess_dir_only (pfile, &cb);
278*e4b17023SJohn Marino }
279*e4b17023SJohn Marino
280*e4b17023SJohn Marino /* Adjust print.src_line for newlines embedded in output. */
281*e4b17023SJohn Marino static void
account_for_newlines(const unsigned char * str,size_t len)282*e4b17023SJohn Marino account_for_newlines (const unsigned char *str, size_t len)
283*e4b17023SJohn Marino {
284*e4b17023SJohn Marino while (len--)
285*e4b17023SJohn Marino if (*str++ == '\n')
286*e4b17023SJohn Marino print.src_line++;
287*e4b17023SJohn Marino }
288*e4b17023SJohn Marino
289*e4b17023SJohn Marino /* Writes out a traditionally preprocessed file. */
290*e4b17023SJohn Marino static void
scan_translation_unit_trad(cpp_reader * pfile)291*e4b17023SJohn Marino scan_translation_unit_trad (cpp_reader *pfile)
292*e4b17023SJohn Marino {
293*e4b17023SJohn Marino while (_cpp_read_logical_line_trad (pfile))
294*e4b17023SJohn Marino {
295*e4b17023SJohn Marino size_t len = pfile->out.cur - pfile->out.base;
296*e4b17023SJohn Marino maybe_print_line (pfile->out.first_line);
297*e4b17023SJohn Marino fwrite (pfile->out.base, 1, len, print.outf);
298*e4b17023SJohn Marino print.printed = 1;
299*e4b17023SJohn Marino if (!CPP_OPTION (pfile, discard_comments))
300*e4b17023SJohn Marino account_for_newlines (pfile->out.base, len);
301*e4b17023SJohn Marino }
302*e4b17023SJohn Marino }
303*e4b17023SJohn Marino
304*e4b17023SJohn Marino /* If the token read on logical line LINE needs to be output on a
305*e4b17023SJohn Marino different line to the current one, output the required newlines or
306*e4b17023SJohn Marino a line marker, and return 1. Otherwise return 0. */
307*e4b17023SJohn Marino
308*e4b17023SJohn Marino static void
maybe_print_line_1(source_location src_loc,FILE * stream)309*e4b17023SJohn Marino maybe_print_line_1 (source_location src_loc, FILE *stream)
310*e4b17023SJohn Marino {
311*e4b17023SJohn Marino int src_line = LOCATION_LINE (src_loc);
312*e4b17023SJohn Marino const char *src_file = LOCATION_FILE (src_loc);
313*e4b17023SJohn Marino
314*e4b17023SJohn Marino /* End the previous line of text. */
315*e4b17023SJohn Marino if (print.printed)
316*e4b17023SJohn Marino {
317*e4b17023SJohn Marino putc ('\n', stream);
318*e4b17023SJohn Marino print.src_line++;
319*e4b17023SJohn Marino print.printed = 0;
320*e4b17023SJohn Marino }
321*e4b17023SJohn Marino
322*e4b17023SJohn Marino if (!flag_no_line_commands
323*e4b17023SJohn Marino && src_line >= print.src_line
324*e4b17023SJohn Marino && src_line < print.src_line + 8
325*e4b17023SJohn Marino && strcmp (src_file, print.src_file) == 0)
326*e4b17023SJohn Marino {
327*e4b17023SJohn Marino while (src_line > print.src_line)
328*e4b17023SJohn Marino {
329*e4b17023SJohn Marino putc ('\n', stream);
330*e4b17023SJohn Marino print.src_line++;
331*e4b17023SJohn Marino }
332*e4b17023SJohn Marino }
333*e4b17023SJohn Marino else
334*e4b17023SJohn Marino print_line_1 (src_loc, "", stream);
335*e4b17023SJohn Marino
336*e4b17023SJohn Marino }
337*e4b17023SJohn Marino
338*e4b17023SJohn Marino /* If the token read on logical line LINE needs to be output on a
339*e4b17023SJohn Marino different line to the current one, output the required newlines or
340*e4b17023SJohn Marino a line marker, and return 1. Otherwise return 0. */
341*e4b17023SJohn Marino
342*e4b17023SJohn Marino static void
maybe_print_line(source_location src_loc)343*e4b17023SJohn Marino maybe_print_line (source_location src_loc)
344*e4b17023SJohn Marino {
345*e4b17023SJohn Marino if (cpp_get_options (parse_in)->debug)
346*e4b17023SJohn Marino linemap_dump_location (line_table, src_loc,
347*e4b17023SJohn Marino print.outf);
348*e4b17023SJohn Marino maybe_print_line_1 (src_loc, print.outf);
349*e4b17023SJohn Marino }
350*e4b17023SJohn Marino
351*e4b17023SJohn Marino /* Output a line marker for logical line LINE. Special flags are "1"
352*e4b17023SJohn Marino or "2" indicating entering or leaving a file. */
353*e4b17023SJohn Marino
354*e4b17023SJohn Marino static void
print_line_1(source_location src_loc,const char * special_flags,FILE * stream)355*e4b17023SJohn Marino print_line_1 (source_location src_loc, const char *special_flags, FILE *stream)
356*e4b17023SJohn Marino {
357*e4b17023SJohn Marino /* End any previous line of text. */
358*e4b17023SJohn Marino if (print.printed)
359*e4b17023SJohn Marino putc ('\n', stream);
360*e4b17023SJohn Marino print.printed = 0;
361*e4b17023SJohn Marino
362*e4b17023SJohn Marino if (!flag_no_line_commands)
363*e4b17023SJohn Marino {
364*e4b17023SJohn Marino const char *file_path = LOCATION_FILE (src_loc);
365*e4b17023SJohn Marino int sysp;
366*e4b17023SJohn Marino size_t to_file_len = strlen (file_path);
367*e4b17023SJohn Marino unsigned char *to_file_quoted =
368*e4b17023SJohn Marino (unsigned char *) alloca (to_file_len * 4 + 1);
369*e4b17023SJohn Marino unsigned char *p;
370*e4b17023SJohn Marino
371*e4b17023SJohn Marino print.src_line = LOCATION_LINE (src_loc);
372*e4b17023SJohn Marino print.src_file = file_path;
373*e4b17023SJohn Marino
374*e4b17023SJohn Marino /* cpp_quote_string does not nul-terminate, so we have to do it
375*e4b17023SJohn Marino ourselves. */
376*e4b17023SJohn Marino p = cpp_quote_string (to_file_quoted,
377*e4b17023SJohn Marino (const unsigned char *) file_path,
378*e4b17023SJohn Marino to_file_len);
379*e4b17023SJohn Marino *p = '\0';
380*e4b17023SJohn Marino fprintf (stream, "# %u \"%s\"%s",
381*e4b17023SJohn Marino print.src_line == 0 ? 1 : print.src_line,
382*e4b17023SJohn Marino to_file_quoted, special_flags);
383*e4b17023SJohn Marino
384*e4b17023SJohn Marino sysp = in_system_header_at (src_loc);
385*e4b17023SJohn Marino if (sysp == 2)
386*e4b17023SJohn Marino fputs (" 3 4", stream);
387*e4b17023SJohn Marino else if (sysp == 1)
388*e4b17023SJohn Marino fputs (" 3", stream);
389*e4b17023SJohn Marino
390*e4b17023SJohn Marino putc ('\n', stream);
391*e4b17023SJohn Marino }
392*e4b17023SJohn Marino }
393*e4b17023SJohn Marino
394*e4b17023SJohn Marino /* Output a line marker for logical line LINE. Special flags are "1"
395*e4b17023SJohn Marino or "2" indicating entering or leaving a file. */
396*e4b17023SJohn Marino
397*e4b17023SJohn Marino static void
print_line(source_location src_loc,const char * special_flags)398*e4b17023SJohn Marino print_line (source_location src_loc, const char *special_flags)
399*e4b17023SJohn Marino {
400*e4b17023SJohn Marino if (cpp_get_options (parse_in)->debug)
401*e4b17023SJohn Marino linemap_dump_location (line_table, src_loc,
402*e4b17023SJohn Marino print.outf);
403*e4b17023SJohn Marino print_line_1 (src_loc, special_flags, print.outf);
404*e4b17023SJohn Marino }
405*e4b17023SJohn Marino
406*e4b17023SJohn Marino /* Helper function for cb_line_change and scan_translation_unit. */
407*e4b17023SJohn Marino static void
do_line_change(cpp_reader * pfile,const cpp_token * token,source_location src_loc,int parsing_args)408*e4b17023SJohn Marino do_line_change (cpp_reader *pfile, const cpp_token *token,
409*e4b17023SJohn Marino source_location src_loc, int parsing_args)
410*e4b17023SJohn Marino {
411*e4b17023SJohn Marino if (define_queue || undef_queue)
412*e4b17023SJohn Marino dump_queued_macros (pfile);
413*e4b17023SJohn Marino
414*e4b17023SJohn Marino if (token->type == CPP_EOF || parsing_args)
415*e4b17023SJohn Marino return;
416*e4b17023SJohn Marino
417*e4b17023SJohn Marino maybe_print_line (src_loc);
418*e4b17023SJohn Marino print.prev = 0;
419*e4b17023SJohn Marino print.source = 0;
420*e4b17023SJohn Marino
421*e4b17023SJohn Marino /* Supply enough spaces to put this token in its original column,
422*e4b17023SJohn Marino one space per column greater than 2, since scan_translation_unit
423*e4b17023SJohn Marino will provide a space if PREV_WHITE. Don't bother trying to
424*e4b17023SJohn Marino reconstruct tabs; we can't get it right in general, and nothing
425*e4b17023SJohn Marino ought to care. Some things do care; the fault lies with them. */
426*e4b17023SJohn Marino if (!CPP_OPTION (pfile, traditional))
427*e4b17023SJohn Marino {
428*e4b17023SJohn Marino int spaces = LOCATION_COLUMN (src_loc) - 2;
429*e4b17023SJohn Marino print.printed = 1;
430*e4b17023SJohn Marino
431*e4b17023SJohn Marino while (-- spaces >= 0)
432*e4b17023SJohn Marino putc (' ', print.outf);
433*e4b17023SJohn Marino }
434*e4b17023SJohn Marino }
435*e4b17023SJohn Marino
436*e4b17023SJohn Marino /* Called when a line of output is started. TOKEN is the first token
437*e4b17023SJohn Marino of the line, and at end of file will be CPP_EOF. */
438*e4b17023SJohn Marino static void
cb_line_change(cpp_reader * pfile,const cpp_token * token,int parsing_args)439*e4b17023SJohn Marino cb_line_change (cpp_reader *pfile, const cpp_token *token,
440*e4b17023SJohn Marino int parsing_args)
441*e4b17023SJohn Marino {
442*e4b17023SJohn Marino do_line_change (pfile, token, token->src_loc, parsing_args);
443*e4b17023SJohn Marino }
444*e4b17023SJohn Marino
445*e4b17023SJohn Marino static void
cb_ident(cpp_reader * pfile ATTRIBUTE_UNUSED,source_location line,const cpp_string * str)446*e4b17023SJohn Marino cb_ident (cpp_reader *pfile ATTRIBUTE_UNUSED, source_location line,
447*e4b17023SJohn Marino const cpp_string *str)
448*e4b17023SJohn Marino {
449*e4b17023SJohn Marino maybe_print_line (line);
450*e4b17023SJohn Marino fprintf (print.outf, "#ident %s\n", str->text);
451*e4b17023SJohn Marino print.src_line++;
452*e4b17023SJohn Marino }
453*e4b17023SJohn Marino
454*e4b17023SJohn Marino static void
cb_define(cpp_reader * pfile,source_location line,cpp_hashnode * node)455*e4b17023SJohn Marino cb_define (cpp_reader *pfile, source_location line, cpp_hashnode *node)
456*e4b17023SJohn Marino {
457*e4b17023SJohn Marino const struct line_map *map;
458*e4b17023SJohn Marino
459*e4b17023SJohn Marino maybe_print_line (line);
460*e4b17023SJohn Marino fputs ("#define ", print.outf);
461*e4b17023SJohn Marino
462*e4b17023SJohn Marino /* 'D' is whole definition; 'N' is name only. */
463*e4b17023SJohn Marino if (flag_dump_macros == 'D')
464*e4b17023SJohn Marino fputs ((const char *) cpp_macro_definition (pfile, node),
465*e4b17023SJohn Marino print.outf);
466*e4b17023SJohn Marino else
467*e4b17023SJohn Marino fputs ((const char *) NODE_NAME (node), print.outf);
468*e4b17023SJohn Marino
469*e4b17023SJohn Marino putc ('\n', print.outf);
470*e4b17023SJohn Marino linemap_resolve_location (line_table, line,
471*e4b17023SJohn Marino LRK_MACRO_DEFINITION_LOCATION,
472*e4b17023SJohn Marino &map);
473*e4b17023SJohn Marino if (LINEMAP_LINE (map) != 0)
474*e4b17023SJohn Marino print.src_line++;
475*e4b17023SJohn Marino }
476*e4b17023SJohn Marino
477*e4b17023SJohn Marino static void
cb_undef(cpp_reader * pfile ATTRIBUTE_UNUSED,source_location line,cpp_hashnode * node)478*e4b17023SJohn Marino cb_undef (cpp_reader *pfile ATTRIBUTE_UNUSED, source_location line,
479*e4b17023SJohn Marino cpp_hashnode *node)
480*e4b17023SJohn Marino {
481*e4b17023SJohn Marino maybe_print_line (line);
482*e4b17023SJohn Marino fprintf (print.outf, "#undef %s\n", NODE_NAME (node));
483*e4b17023SJohn Marino print.src_line++;
484*e4b17023SJohn Marino }
485*e4b17023SJohn Marino
486*e4b17023SJohn Marino static void
cb_used_define(cpp_reader * pfile,source_location line ATTRIBUTE_UNUSED,cpp_hashnode * node)487*e4b17023SJohn Marino cb_used_define (cpp_reader *pfile, source_location line ATTRIBUTE_UNUSED,
488*e4b17023SJohn Marino cpp_hashnode *node)
489*e4b17023SJohn Marino {
490*e4b17023SJohn Marino macro_queue *q;
491*e4b17023SJohn Marino if (node->flags & NODE_BUILTIN)
492*e4b17023SJohn Marino return;
493*e4b17023SJohn Marino q = XNEW (macro_queue);
494*e4b17023SJohn Marino q->macro = xstrdup ((const char *) cpp_macro_definition (pfile, node));
495*e4b17023SJohn Marino q->next = define_queue;
496*e4b17023SJohn Marino define_queue = q;
497*e4b17023SJohn Marino }
498*e4b17023SJohn Marino
499*e4b17023SJohn Marino static void
cb_used_undef(cpp_reader * pfile ATTRIBUTE_UNUSED,source_location line ATTRIBUTE_UNUSED,cpp_hashnode * node)500*e4b17023SJohn Marino cb_used_undef (cpp_reader *pfile ATTRIBUTE_UNUSED,
501*e4b17023SJohn Marino source_location line ATTRIBUTE_UNUSED,
502*e4b17023SJohn Marino cpp_hashnode *node)
503*e4b17023SJohn Marino {
504*e4b17023SJohn Marino macro_queue *q;
505*e4b17023SJohn Marino q = XNEW (macro_queue);
506*e4b17023SJohn Marino q->macro = xstrdup ((const char *) NODE_NAME (node));
507*e4b17023SJohn Marino q->next = undef_queue;
508*e4b17023SJohn Marino undef_queue = q;
509*e4b17023SJohn Marino }
510*e4b17023SJohn Marino
511*e4b17023SJohn Marino static void
dump_queued_macros(cpp_reader * pfile ATTRIBUTE_UNUSED)512*e4b17023SJohn Marino dump_queued_macros (cpp_reader *pfile ATTRIBUTE_UNUSED)
513*e4b17023SJohn Marino {
514*e4b17023SJohn Marino macro_queue *q;
515*e4b17023SJohn Marino
516*e4b17023SJohn Marino /* End the previous line of text. */
517*e4b17023SJohn Marino if (print.printed)
518*e4b17023SJohn Marino {
519*e4b17023SJohn Marino putc ('\n', print.outf);
520*e4b17023SJohn Marino print.src_line++;
521*e4b17023SJohn Marino print.printed = 0;
522*e4b17023SJohn Marino }
523*e4b17023SJohn Marino
524*e4b17023SJohn Marino for (q = define_queue; q;)
525*e4b17023SJohn Marino {
526*e4b17023SJohn Marino macro_queue *oq;
527*e4b17023SJohn Marino fputs ("#define ", print.outf);
528*e4b17023SJohn Marino fputs (q->macro, print.outf);
529*e4b17023SJohn Marino putc ('\n', print.outf);
530*e4b17023SJohn Marino print.src_line++;
531*e4b17023SJohn Marino oq = q;
532*e4b17023SJohn Marino q = q->next;
533*e4b17023SJohn Marino free (oq->macro);
534*e4b17023SJohn Marino free (oq);
535*e4b17023SJohn Marino }
536*e4b17023SJohn Marino define_queue = NULL;
537*e4b17023SJohn Marino for (q = undef_queue; q;)
538*e4b17023SJohn Marino {
539*e4b17023SJohn Marino macro_queue *oq;
540*e4b17023SJohn Marino fprintf (print.outf, "#undef %s\n", q->macro);
541*e4b17023SJohn Marino print.src_line++;
542*e4b17023SJohn Marino oq = q;
543*e4b17023SJohn Marino q = q->next;
544*e4b17023SJohn Marino free (oq->macro);
545*e4b17023SJohn Marino free (oq);
546*e4b17023SJohn Marino }
547*e4b17023SJohn Marino undef_queue = NULL;
548*e4b17023SJohn Marino }
549*e4b17023SJohn Marino
550*e4b17023SJohn Marino static void
cb_include(cpp_reader * pfile ATTRIBUTE_UNUSED,source_location line,const unsigned char * dir,const char * header,int angle_brackets,const cpp_token ** comments)551*e4b17023SJohn Marino cb_include (cpp_reader *pfile ATTRIBUTE_UNUSED, source_location line,
552*e4b17023SJohn Marino const unsigned char *dir, const char *header, int angle_brackets,
553*e4b17023SJohn Marino const cpp_token **comments)
554*e4b17023SJohn Marino {
555*e4b17023SJohn Marino maybe_print_line (line);
556*e4b17023SJohn Marino if (angle_brackets)
557*e4b17023SJohn Marino fprintf (print.outf, "#%s <%s>", dir, header);
558*e4b17023SJohn Marino else
559*e4b17023SJohn Marino fprintf (print.outf, "#%s \"%s\"", dir, header);
560*e4b17023SJohn Marino
561*e4b17023SJohn Marino if (comments != NULL)
562*e4b17023SJohn Marino {
563*e4b17023SJohn Marino while (*comments != NULL)
564*e4b17023SJohn Marino {
565*e4b17023SJohn Marino if ((*comments)->flags & PREV_WHITE)
566*e4b17023SJohn Marino putc (' ', print.outf);
567*e4b17023SJohn Marino cpp_output_token (*comments, print.outf);
568*e4b17023SJohn Marino ++comments;
569*e4b17023SJohn Marino }
570*e4b17023SJohn Marino }
571*e4b17023SJohn Marino
572*e4b17023SJohn Marino putc ('\n', print.outf);
573*e4b17023SJohn Marino print.src_line++;
574*e4b17023SJohn Marino }
575*e4b17023SJohn Marino
576*e4b17023SJohn Marino /* Callback called when -fworking-director and -E to emit working
577*e4b17023SJohn Marino directory in cpp output file. */
578*e4b17023SJohn Marino
579*e4b17023SJohn Marino void
pp_dir_change(cpp_reader * pfile ATTRIBUTE_UNUSED,const char * dir)580*e4b17023SJohn Marino pp_dir_change (cpp_reader *pfile ATTRIBUTE_UNUSED, const char *dir)
581*e4b17023SJohn Marino {
582*e4b17023SJohn Marino size_t to_file_len = strlen (dir);
583*e4b17023SJohn Marino unsigned char *to_file_quoted =
584*e4b17023SJohn Marino (unsigned char *) alloca (to_file_len * 4 + 1);
585*e4b17023SJohn Marino unsigned char *p;
586*e4b17023SJohn Marino
587*e4b17023SJohn Marino /* cpp_quote_string does not nul-terminate, so we have to do it ourselves. */
588*e4b17023SJohn Marino p = cpp_quote_string (to_file_quoted, (const unsigned char *) dir, to_file_len);
589*e4b17023SJohn Marino *p = '\0';
590*e4b17023SJohn Marino fprintf (print.outf, "# 1 \"%s//\"\n", to_file_quoted);
591*e4b17023SJohn Marino }
592*e4b17023SJohn Marino
593*e4b17023SJohn Marino /* The file name, line number or system header flags have changed, as
594*e4b17023SJohn Marino described in MAP. */
595*e4b17023SJohn Marino
596*e4b17023SJohn Marino void
pp_file_change(const struct line_map * map)597*e4b17023SJohn Marino pp_file_change (const struct line_map *map)
598*e4b17023SJohn Marino {
599*e4b17023SJohn Marino const char *flags = "";
600*e4b17023SJohn Marino
601*e4b17023SJohn Marino if (flag_no_line_commands)
602*e4b17023SJohn Marino return;
603*e4b17023SJohn Marino
604*e4b17023SJohn Marino if (map != NULL)
605*e4b17023SJohn Marino {
606*e4b17023SJohn Marino input_location = map->start_location;
607*e4b17023SJohn Marino if (print.first_time)
608*e4b17023SJohn Marino {
609*e4b17023SJohn Marino /* Avoid printing foo.i when the main file is foo.c. */
610*e4b17023SJohn Marino if (!cpp_get_options (parse_in)->preprocessed)
611*e4b17023SJohn Marino print_line (map->start_location, flags);
612*e4b17023SJohn Marino print.first_time = 0;
613*e4b17023SJohn Marino }
614*e4b17023SJohn Marino else
615*e4b17023SJohn Marino {
616*e4b17023SJohn Marino /* Bring current file to correct line when entering a new file. */
617*e4b17023SJohn Marino if (map->reason == LC_ENTER)
618*e4b17023SJohn Marino {
619*e4b17023SJohn Marino const struct line_map *from = INCLUDED_FROM (line_table, map);
620*e4b17023SJohn Marino maybe_print_line (LAST_SOURCE_LINE_LOCATION (from));
621*e4b17023SJohn Marino }
622*e4b17023SJohn Marino if (map->reason == LC_ENTER)
623*e4b17023SJohn Marino flags = " 1";
624*e4b17023SJohn Marino else if (map->reason == LC_LEAVE)
625*e4b17023SJohn Marino flags = " 2";
626*e4b17023SJohn Marino print_line (map->start_location, flags);
627*e4b17023SJohn Marino }
628*e4b17023SJohn Marino }
629*e4b17023SJohn Marino }
630*e4b17023SJohn Marino
631*e4b17023SJohn Marino /* Copy a #pragma directive to the preprocessed output. */
632*e4b17023SJohn Marino static void
cb_def_pragma(cpp_reader * pfile,source_location line)633*e4b17023SJohn Marino cb_def_pragma (cpp_reader *pfile, source_location line)
634*e4b17023SJohn Marino {
635*e4b17023SJohn Marino maybe_print_line (line);
636*e4b17023SJohn Marino fputs ("#pragma ", print.outf);
637*e4b17023SJohn Marino cpp_output_line (pfile, print.outf);
638*e4b17023SJohn Marino print.src_line++;
639*e4b17023SJohn Marino }
640*e4b17023SJohn Marino
641*e4b17023SJohn Marino /* Dump out the hash table. */
642*e4b17023SJohn Marino static int
dump_macro(cpp_reader * pfile,cpp_hashnode * node,void * v ATTRIBUTE_UNUSED)643*e4b17023SJohn Marino dump_macro (cpp_reader *pfile, cpp_hashnode *node, void *v ATTRIBUTE_UNUSED)
644*e4b17023SJohn Marino {
645*e4b17023SJohn Marino if (node->type == NT_MACRO && !(node->flags & NODE_BUILTIN))
646*e4b17023SJohn Marino {
647*e4b17023SJohn Marino fputs ("#define ", print.outf);
648*e4b17023SJohn Marino fputs ((const char *) cpp_macro_definition (pfile, node),
649*e4b17023SJohn Marino print.outf);
650*e4b17023SJohn Marino putc ('\n', print.outf);
651*e4b17023SJohn Marino print.src_line++;
652*e4b17023SJohn Marino }
653*e4b17023SJohn Marino
654*e4b17023SJohn Marino return 1;
655*e4b17023SJohn Marino }
656*e4b17023SJohn Marino
657*e4b17023SJohn Marino /* Load in the PCH file NAME, open on FD. It was originally searched for
658*e4b17023SJohn Marino by ORIG_NAME. Also, print out a #include command so that the PCH
659*e4b17023SJohn Marino file can be loaded when the preprocessed output is compiled. */
660*e4b17023SJohn Marino
661*e4b17023SJohn Marino static void
cb_read_pch(cpp_reader * pfile,const char * name,int fd,const char * orig_name ATTRIBUTE_UNUSED)662*e4b17023SJohn Marino cb_read_pch (cpp_reader *pfile, const char *name,
663*e4b17023SJohn Marino int fd, const char *orig_name ATTRIBUTE_UNUSED)
664*e4b17023SJohn Marino {
665*e4b17023SJohn Marino c_common_read_pch (pfile, name, fd, orig_name);
666*e4b17023SJohn Marino
667*e4b17023SJohn Marino fprintf (print.outf, "#pragma GCC pch_preprocess \"%s\"\n", name);
668*e4b17023SJohn Marino print.src_line++;
669*e4b17023SJohn Marino }
670