]> git.ipfire.org Git - thirdparty/gcc.git/blame - gcc/pretty-print.h
* config/rs6000/xcoff.h (ASM_OUTPUT_SPECIAL_POOL_ENTRY_P): Do not
[thirdparty/gcc.git] / gcc / pretty-print.h
CommitLineData
75e76012 1/* Various declarations for language-independent pretty-print subroutines.
8c4c00c1 2 Copyright (C) 2002, 2003, 2004, 2007 Free Software Foundation, Inc.
75e76012 3 Contributed by Gabriel Dos Reis <gdr@integrable-solutions.net>
4
5This file is part of GCC.
6
7GCC is free software; you can redistribute it and/or modify it under
8the terms of the GNU General Public License as published by the Free
8c4c00c1 9Software Foundation; either version 3, or (at your option) any later
75e76012 10version.
11
12GCC is distributed in the hope that it will be useful, but WITHOUT ANY
13WARRANTY; without even the implied warranty of MERCHANTABILITY or
14FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
15for more details.
16
17You should have received a copy of the GNU General Public License
8c4c00c1 18along with GCC; see the file COPYING3. If not see
19<http://www.gnu.org/licenses/>. */
75e76012 20
21#ifndef GCC_PRETTY_PRINT_H
22#define GCC_PRETTY_PRINT_H
23
aa6db498 24#include "obstack.h"
25#include "input.h"
26
c907c5b1 27/* Maximum number of format string arguments. */
28#define PP_NL_ARGMAX 30
29
aa6db498 30/* The type of a text to be formatted according a format specification
31 along with a list of things. */
32typedef struct
33{
34 const char *format_spec;
35 va_list *args_ptr;
36 int err_no; /* for %m */
c907c5b1 37 location_t *locus;
b8c23db3 38 tree *abstract_origin;
aa6db498 39} text_info;
40
41/* How often diagnostics are prefixed by their locations:
42 o DIAGNOSTICS_SHOW_PREFIX_NEVER: never - not yet supported;
43 o DIAGNOSTICS_SHOW_PREFIX_ONCE: emit only once;
44 o DIAGNOSTICS_SHOW_PREFIX_EVERY_LINE: emit each time a physical
45 line is started. */
46typedef enum
47{
48 DIAGNOSTICS_SHOW_PREFIX_ONCE = 0x0,
49 DIAGNOSTICS_SHOW_PREFIX_NEVER = 0x1,
50 DIAGNOSTICS_SHOW_PREFIX_EVERY_LINE = 0x2
51} diagnostic_prefixing_rule_t;
52
c907c5b1 53/* The chunk_info data structure forms a stack of the results from the
54 first phase of formatting (pp_base_format) which have not yet been
55 output (pp_base_output_formatted_text). A stack is necessary because
56 the diagnostic starter may decide to generate its own output by way
57 of the formatter. */
58struct chunk_info
59{
60 /* Pointer to previous chunk on the stack. */
61 struct chunk_info *prev;
62
63 /* Array of chunks to output. Each chunk is a NUL-terminated string.
64 In the first phase of formatting, even-numbered chunks are
65 to be output verbatim, odd-numbered chunks are format specifiers.
66 The second phase replaces all odd-numbered chunks with formatted
67 text, and the third phase simply emits all the chunks in sequence
68 with appropriate line-wrapping. */
69 const char *args[PP_NL_ARGMAX * 2];
70};
71
aa6db498 72/* The output buffer datatype. This is best seen as an abstract datatype
73 whose fields should not be accessed directly by clients. */
74typedef struct
75{
c907c5b1 76 /* Obstack where the text is built up. */
77 struct obstack formatted_obstack;
78
79 /* Obstack containing a chunked representation of the format
80 specification plus arguments. */
81 struct obstack chunk_obstack;
82
83 /* Currently active obstack: one of the above two. This is used so
84 that the text formatters don't need to know which phase we're in. */
85 struct obstack *obstack;
86
87 /* Stack of chunk arrays. These come from the chunk_obstack. */
88 struct chunk_info *cur_chunk_array;
aa6db498 89
90 /* Where to output formatted text. */
91 FILE *stream;
92
93 /* The amount of characters output so far. */
94 int line_length;
95
96 /* This must be large enough to hold any printed integer or
97 floating-point value. */
98 char digit_buffer[128];
99} output_buffer;
75e76012 100
75e76012 101/* The type of pretty-printer flags passed to clients. */
102typedef unsigned int pp_flags;
103
b38e286c 104typedef enum
75e76012 105{
71a36b9f 106 pp_none, pp_before, pp_after
b38e286c 107} pp_padding;
75e76012 108
c907c5b1 109/* Structure for switching in and out of verbatim mode in a convenient
110 manner. */
111typedef struct
112{
113 /* Current prefixing rule. */
114 diagnostic_prefixing_rule_t rule;
115
116 /* The ideal upper bound of number of characters per line, as suggested
117 by front-end. */
118 int line_cutoff;
119} pp_wrapping_mode_t;
120
121/* Maximum characters per line in automatic line wrapping mode.
122 Zero means don't wrap lines. */
123#define pp_line_cutoff(PP) pp_base (PP)->wrapping.line_cutoff
124
125/* Prefixing rule used in formatting a diagnostic message. */
126#define pp_prefixing_rule(PP) pp_base (PP)->wrapping.rule
127
128/* Get or set the wrapping mode as a single entity. */
129#define pp_wrapping_mode(PP) pp_base (PP)->wrapping
130
aa6db498 131/* The type of a hook that formats client-specific data onto a pretty_pinter.
132 A client-supplied formatter returns true if everything goes well,
133 otherwise it returns false. */
134typedef struct pretty_print_info pretty_printer;
c907c5b1 135typedef bool (*printer_fn) (pretty_printer *, text_info *, const char *,
136 int, bool, bool, bool);
aa6db498 137
138/* Client supplied function used to decode formats. */
139#define pp_format_decoder(PP) pp_base (PP)->format_decoder
140
141/* TRUE if a newline character needs to be added before further
142 formatting. */
143#define pp_needs_newline(PP) pp_base (PP)->need_newline
144
aa6db498 145/* True if PRETTY-PTINTER is in line-wrapping mode. */
146#define pp_is_wrapping_line(PP) (pp_line_cutoff (PP) > 0)
147
aa6db498 148/* The amount of whitespace to be emitted when starting a new line. */
149#define pp_indentation(PP) pp_base (PP)->indent_skip
150
151/* The data structure that contains the bare minimum required to do
152 proper pretty-printing. Clients may derived from this structure
153 and add additional fields they need. */
75e76012 154struct pretty_print_info
155{
75e76012 156 /* Where we print external representation of ENTITY. */
157 output_buffer *buffer;
aa6db498 158
159 /* The prefix for each new line. */
160 const char *prefix;
aa6db498 161
b38e286c 162 /* Where to put whitespace around the entity being formatted. */
163 pp_padding padding;
aa6db498 164
165 /* The real upper bound of number of characters per line, taking into
166 account the case of a very very looong prefix. */
167 int maximum_length;
168
aa6db498 169 /* Indentation count. */
170 int indent_skip;
171
c907c5b1 172 /* Current wrapping mode. */
173 pp_wrapping_mode_t wrapping;
aa6db498 174
175 /* If non-NULL, this function formats a TEXT into the BUFFER. When called,
176 TEXT->format_spec points to a format code. FORMAT_DECODER should call
177 pp_string (and related functions) to add data to the BUFFER.
178 FORMAT_DECODER can read arguments from *TEXT->args_pts using VA_ARG.
179 If the BUFFER needs additional characters from the format string, it
180 should advance the TEXT->format_spec as it goes. When FORMAT_DECODER
181 returns, TEXT->format_spec should point to the last character processed.
182 */
183 printer_fn format_decoder;
184
185 /* Nonzero if current PREFIX was emitted at least once. */
186 bool emitted_prefix;
187
188 /* Nonzero means one should emit a newline before outputting anything. */
189 bool need_newline;
75e76012 190};
191
0de2b732 192#define pp_set_line_maximum_length(PP, L) \
193 pp_base_set_line_maximum_length (pp_base (PP), L)
194#define pp_set_prefix(PP, P) pp_base_set_prefix (pp_base (PP), P)
195#define pp_destroy_prefix(PP) pp_base_destroy_prefix (pp_base (PP))
196#define pp_remaining_character_count_for_line(PP) \
197 pp_base_remaining_character_count_for_line (pp_base (PP))
198#define pp_clear_output_area(PP) \
199 pp_base_clear_output_area (pp_base (PP))
200#define pp_formatted_text(PP) pp_base_formatted_text (pp_base (PP))
201#define pp_last_position_in_text(PP) \
202 pp_base_last_position_in_text (pp_base (PP))
203#define pp_emit_prefix(PP) pp_base_emit_prefix (pp_base (PP))
204#define pp_append_text(PP, B, E) \
205 pp_base_append_text (pp_base (PP), B, E)
206#define pp_flush(PP) pp_base_flush (pp_base (PP))
c907c5b1 207#define pp_format(PP, TI) pp_base_format (pp_base (PP), TI)
208#define pp_output_formatted_text(PP) \
209 pp_base_output_formatted_text (pp_base (PP))
0de2b732 210#define pp_format_verbatim(PP, TI) \
211 pp_base_format_verbatim (pp_base (PP), TI)
212
76a6451b 213#define pp_character(PP, C) pp_base_character (pp_base (PP), C)
214#define pp_string(PP, S) pp_base_string (pp_base (PP), S)
215#define pp_newline(PP) pp_base_newline (pp_base (PP))
0de2b732 216
76a6451b 217#define pp_space(PP) pp_character (PP, ' ')
218#define pp_left_paren(PP) pp_character (PP, '(')
219#define pp_right_paren(PP) pp_character (PP, ')')
220#define pp_left_bracket(PP) pp_character (PP, '[')
221#define pp_right_bracket(PP) pp_character (PP, ']')
222#define pp_left_brace(PP) pp_character (PP, '{')
223#define pp_right_brace(PP) pp_character (PP, '}')
224#define pp_semicolon(PP) pp_character (PP, ';')
225#define pp_comma(PP) pp_string (PP, ", ")
226#define pp_dot(PP) pp_character (PP, '.')
227#define pp_colon(PP) pp_character (PP, ':')
228#define pp_colon_colon(PP) pp_string (PP, "::")
229#define pp_arrow(PP) pp_string (PP, "->")
230#define pp_equal(PP) pp_character (PP, '=')
231#define pp_question(PP) pp_character (PP, '?')
232#define pp_bar(PP) pp_character (PP, '|')
233#define pp_carret(PP) pp_character (PP, '^')
234#define pp_ampersand(PP) pp_character (PP, '&')
235#define pp_less(PP) pp_character (PP, '<')
236#define pp_greater(PP) pp_character (PP, '>')
237#define pp_plus(PP) pp_character (PP, '+')
238#define pp_minus(PP) pp_character (PP, '-')
239#define pp_star(PP) pp_character (PP, '*')
240#define pp_slash(PP) pp_character (PP, '/')
241#define pp_modulo(PP) pp_character (PP, '%')
242#define pp_exclamation(PP) pp_character (PP, '!')
243#define pp_complement(PP) pp_character (PP, '~')
244#define pp_quote(PP) pp_character (PP, '\'')
245#define pp_backquote(PP) pp_character (PP, '`')
246#define pp_doublequote(PP) pp_character (PP, '"')
aa6db498 247#define pp_newline_and_indent(PP, N) \
248 do { \
249 pp_indentation (PP) += N; \
250 pp_newline (PP); \
bfdec0d1 251 pp_base_indent (pp_base (PP)); \
252 pp_needs_newline (PP) = false; \
b38e286c 253 } while (0)
c10de5e7 254#define pp_maybe_newline_and_indent(PP, N) \
255 if (pp_needs_newline (PP)) pp_newline_and_indent (PP, N)
69cb846f 256#define pp_maybe_space(PP) pp_base_maybe_space (pp_base (PP))
aa6db498 257#define pp_separate_with(PP, C) \
258 do { \
76a6451b 259 pp_character (PP, C); \
aa6db498 260 pp_space (PP); \
b38e286c 261 } while (0)
76a6451b 262#define pp_scalar(PP, FORMAT, SCALAR) \
263 do \
264 { \
265 sprintf (pp_buffer (PP)->digit_buffer, FORMAT, SCALAR); \
266 pp_string (PP, pp_buffer (PP)->digit_buffer); \
267 } \
aa6db498 268 while (0)
269#define pp_decimal_int(PP, I) pp_scalar (PP, "%d", I)
270#define pp_wide_integer(PP, I) \
271 pp_scalar (PP, HOST_WIDE_INT_PRINT_DEC, (HOST_WIDE_INT) I)
327a38c3 272#define pp_widest_integer(PP, I) \
273 pp_scalar (PP, HOST_WIDEST_INT_PRINT_DEC, (HOST_WIDEST_INT) I)
aa6db498 274#define pp_pointer(PP, P) pp_scalar (PP, "%p", P)
75e76012 275
76a6451b 276#define pp_identifier(PP, ID) pp_string (PP, ID)
aa6db498 277#define pp_tree_identifier(PP, T) \
0de2b732 278 pp_append_text(PP, IDENTIFIER_POINTER (T), \
aa6db498 279 IDENTIFIER_POINTER (T) + IDENTIFIER_LENGTH (T))
71a36b9f 280
76a6451b 281#define pp_unsupported_tree(PP, T) \
1e5fcbe2 282 pp_verbatim (pp_base (PP), "#%qs not supported by %s#", \
76a6451b 283 tree_code_name[(int) TREE_CODE (T)], __FUNCTION__)
71a36b9f 284
aa6db498 285
76a6451b 286#define pp_buffer(PP) pp_base (PP)->buffer
aa6db498 287/* Clients that directly derive from pretty_printer need to override
40e55fbb 288 this macro to return a pointer to the base pretty_printer structure. */
aa6db498 289#define pp_base(PP) (PP)
290
291extern void pp_construct (pretty_printer *, const char *, int);
0de2b732 292extern void pp_base_set_line_maximum_length (pretty_printer *, int);
293extern void pp_base_set_prefix (pretty_printer *, const char *);
294extern void pp_base_destroy_prefix (pretty_printer *);
295extern int pp_base_remaining_character_count_for_line (pretty_printer *);
296extern void pp_base_clear_output_area (pretty_printer *);
297extern const char *pp_base_formatted_text (pretty_printer *);
298extern const char *pp_base_last_position_in_text (const pretty_printer *);
299extern void pp_base_emit_prefix (pretty_printer *);
300extern void pp_base_append_text (pretty_printer *, const char *, const char *);
eb586f2c 301
302/* This header may be included before toplev.h, hence the duplicate
303 definitions to allow for GCC-specific formats. */
304#if GCC_VERSION >= 3005
305#define ATTRIBUTE_GCC_PPDIAG(m, n) __attribute__ ((__format__ (__gcc_diag__, m ,n))) ATTRIBUTE_NONNULL(m)
306#else
307#define ATTRIBUTE_GCC_PPDIAG(m, n) ATTRIBUTE_NONNULL(m)
308#endif
309extern void pp_printf (pretty_printer *, const char *, ...)
310 ATTRIBUTE_GCC_PPDIAG(2,3);
311
a208cd0d 312extern void pp_verbatim (pretty_printer *, const char *, ...)
313 ATTRIBUTE_GCC_PPDIAG(2,3);
0de2b732 314extern void pp_base_flush (pretty_printer *);
c907c5b1 315extern void pp_base_format (pretty_printer *, text_info *);
316extern void pp_base_output_formatted_text (pretty_printer *);
0de2b732 317extern void pp_base_format_verbatim (pretty_printer *, text_info *);
aa6db498 318
bfdec0d1 319extern void pp_base_indent (pretty_printer *);
76a6451b 320extern void pp_base_newline (pretty_printer *);
321extern void pp_base_character (pretty_printer *, int);
322extern void pp_base_string (pretty_printer *, const char *);
4ee9c684 323extern void pp_write_text_to_stream (pretty_printer *pp);
69cb846f 324extern void pp_base_maybe_space (pretty_printer *);
aa6db498 325
c907c5b1 326/* Switch into verbatim mode and return the old mode. */
327static inline pp_wrapping_mode_t
328pp_set_verbatim_wrapping_ (pretty_printer *pp)
329{
330 pp_wrapping_mode_t oldmode = pp_wrapping_mode (pp);
331 pp_line_cutoff (pp) = 0;
332 pp_prefixing_rule (pp) = DIAGNOSTICS_SHOW_PREFIX_NEVER;
333 return oldmode;
334}
335#define pp_set_verbatim_wrapping(PP) pp_set_verbatim_wrapping_ (pp_base (PP))
336
75e76012 337#endif /* GCC_PRETTY_PRINT_H */