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/* Copyright (C) 2008-2022 Free Software Foundation, Inc.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 3, or (at your option) any later
version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
#include "config.h"
#include "system.h"
#include "coretypes.h"
#define GCC_C_COMMON_C
#include "options.h" /* For cpp_reason_option_codes. */
#undef GCC_C_COMMON_C
#include "target.h"
#include "gfortran.h"
#include "diagnostic.h"
#include "toplev.h"
#include "../../libcpp/internal.h"
#include "cpp.h"
#include "incpath.h"
#include "cppbuiltin.h"
#include "mkdeps.h"
#ifndef TARGET_SYSTEM_ROOT
# define TARGET_SYSTEM_ROOT NULL
#endif
#ifndef TARGET_CPU_CPP_BUILTINS
# define TARGET_CPU_CPP_BUILTINS()
#endif
#ifndef TARGET_OS_CPP_BUILTINS
# define TARGET_OS_CPP_BUILTINS()
#endif
#ifndef TARGET_OBJFMT_CPP_BUILTINS
# define TARGET_OBJFMT_CPP_BUILTINS()
#endif
/* Holds switches parsed by gfc_cpp_handle_option (), but whose
handling is deferred to gfc_cpp_init (). */
typedef struct
{
enum opt_code code;
const char *arg;
}
gfc_cpp_deferred_opt_t;
/* Defined and undefined macros being queued for output with -dU at
the next newline. */
typedef struct gfc_cpp_macro_queue
{
struct gfc_cpp_macro_queue *next; /* Next macro in the list. */
char *macro; /* The name of the macro if not
defined, the full definition if
defined. */
} gfc_cpp_macro_queue;
static gfc_cpp_macro_queue *cpp_define_queue, *cpp_undefine_queue;
struct gfc_cpp_option_data
{
/* Argument of -cpp, implied by SPEC;
if NULL, preprocessing disabled. */
const char *temporary_filename;
const char *output_filename; /* -o <arg> */
int preprocess_only; /* -E */
int discard_comments; /* -C */
int discard_comments_in_macro_exp; /* -CC */
int print_include_names; /* -H */
int no_line_commands; /* -P */
char dump_macros; /* -d[DMNU] */
int dump_includes; /* -dI */
int working_directory; /* -fworking-directory */
int no_predefined; /* -undef */
int standard_include_paths; /* -nostdinc */
int verbose; /* -v */
int deps; /* -M */
int deps_skip_system; /* -MM */
const char *deps_filename; /* -M[M]D */
const char *deps_filename_user; /* -MF <arg> */
int deps_missing_are_generated; /* -MG */
int deps_phony; /* -MP */
int warn_date_time; /* -Wdate-time */
const char *multilib; /* -imultilib <dir> */
const char *prefix; /* -iprefix <dir> */
const char *sysroot; /* -isysroot <dir> */
/* Options whose handling needs to be deferred until the
appropriate cpp-objects are created:
-A predicate=answer
-D <macro>[=<val>]
-U <macro> */
gfc_cpp_deferred_opt_t *deferred_opt;
int deferred_opt_count;
}
gfc_cpp_option;
/* Structures used with libcpp: */
static cpp_options *cpp_option = NULL;
static cpp_reader *cpp_in = NULL;
/* Encapsulates state used to convert a stream of cpp-tokens into
a text file. */
static struct
{
FILE *outf; /* Stream to write to. */
const cpp_token *prev; /* Previous token. */
const cpp_token *source; /* Source token for spacing. */
int src_line; /* Line number currently being written. */
unsigned char printed; /* Nonzero if something output at line. */
bool first_time; /* cb_file_change hasn't been called yet. */
} print;
/* General output routines. */
static void scan_translation_unit (cpp_reader *);
static void scan_translation_unit_trad (cpp_reader *);
/* Callback routines for the parser. Most of these are active only
in specific modes. */
static void cb_file_change (cpp_reader *, const line_map_ordinary *);
static void cb_line_change (cpp_reader *, const cpp_token *, int);
static void cb_define (cpp_reader *, location_t, cpp_hashnode *);
static void cb_undef (cpp_reader *, location_t, cpp_hashnode *);
static void cb_def_pragma (cpp_reader *, location_t);
static void cb_include (cpp_reader *, location_t, const unsigned char *,
const char *, int, const cpp_token **);
static void cb_ident (cpp_reader *, location_t, const cpp_string *);
static void cb_used_define (cpp_reader *, location_t, cpp_hashnode *);
static void cb_used_undef (cpp_reader *, location_t, cpp_hashnode *);
static bool cb_cpp_diagnostic (cpp_reader *, enum cpp_diagnostic_level,
enum cpp_warning_reason, rich_location *,
const char *, va_list *)
ATTRIBUTE_GCC_DIAG(5,0);
void pp_dir_change (cpp_reader *, const char *);
static int dump_macro (cpp_reader *, cpp_hashnode *, void *);
static void dump_queued_macros (cpp_reader *);
static void
cpp_define_builtins (cpp_reader *pfile)
{
/* Initialize CPP built-ins; '1' corresponds to 'flag_hosted'
in C, defines __STDC_HOSTED__?! */
cpp_init_builtins (pfile, 0);
/* Initialize GFORTRAN specific builtins.
These are documented. */
define_language_independent_builtin_macros (pfile);
cpp_define (pfile, "__GFORTRAN__=1");
cpp_define (pfile, "_LANGUAGE_FORTRAN=1");
if (flag_openacc)
cpp_define (pfile, "_OPENACC=201711");
if (flag_openmp)
cpp_define (pfile, "_OPENMP=201511");
/* The defines below are necessary for the TARGET_* macros.
FIXME: Note that builtin_define_std() actually is a function
in c-cppbuiltin.cc which uses flags undefined for Fortran.
Let's skip this for now. If needed, one needs to look into it
once more. */
# define builtin_define(TXT) cpp_define (pfile, TXT)
# define builtin_define_std(TXT)
# define builtin_assert(TXT) cpp_assert (pfile, TXT)
/* FIXME: Pandora's Box
Using the macros below results in multiple breakages:
- mingw will fail to compile this file as dependent macros
assume to be used in c-cppbuiltin.cc only. Further, they use
flags only valid/defined in C (same as noted above).
[config/i386/mingw32.h, config/i386/cygming.h]
- other platforms (not as popular) break similarly
[grep for 'builtin_define_with_int_value' in gcc/config/]
TARGET_CPU_CPP_BUILTINS ();
TARGET_OS_CPP_BUILTINS ();
TARGET_OBJFMT_CPP_BUILTINS (); */
#undef builtin_define
#undef builtin_define_std
#undef builtin_assert
}
bool
gfc_cpp_enabled (void)
{
return gfc_cpp_option.temporary_filename != NULL;
}
bool
gfc_cpp_preprocess_only (void)
{
return gfc_cpp_option.preprocess_only;
}
bool
gfc_cpp_makedep (void)
{
return gfc_cpp_option.deps;
}
void
gfc_cpp_add_dep (const char *name, bool system)
{
if (!gfc_cpp_option.deps_skip_system || !system)
if (mkdeps *deps = cpp_get_deps (cpp_in))
deps_add_dep (deps, name);
}
void
gfc_cpp_add_target (const char *name)
{
if (mkdeps *deps = cpp_get_deps (cpp_in))
deps_add_target (deps, name, 0);
}
const char *
gfc_cpp_temporary_file (void)
{
return gfc_cpp_option.temporary_filename;
}
static void
gfc_cpp_register_include_paths (bool verbose_missing_dir_warn)
{
int cxx_stdinc = 0;
cpp_get_options (cpp_in)->warn_missing_include_dirs
= (global_options.x_cpp_warn_missing_include_dirs
&& verbose_missing_dir_warn);
register_include_chains (cpp_in, gfc_cpp_option.sysroot,
gfc_cpp_option.prefix, gfc_cpp_option.multilib,
gfc_cpp_option.standard_include_paths, cxx_stdinc,
gfc_cpp_option.verbose);
}
void
gfc_cpp_init_options (unsigned int decoded_options_count,
struct cl_decoded_option *decoded_options ATTRIBUTE_UNUSED)
{
/* Do not create any objects from libcpp here. If no
preprocessing is requested, this would be wasted
time and effort.
See gfc_cpp_post_options() instead. */
gfc_cpp_option.temporary_filename = NULL;
gfc_cpp_option.output_filename = NULL;
gfc_cpp_option.preprocess_only = 0;
gfc_cpp_option.discard_comments = 1;
gfc_cpp_option.discard_comments_in_macro_exp = 1;
gfc_cpp_option.print_include_names = 0;
gfc_cpp_option.no_line_commands = 0;
gfc_cpp_option.dump_macros = '\0';
gfc_cpp_option.dump_includes = 0;
gfc_cpp_option.working_directory = -1;
gfc_cpp_option.no_predefined = 0;
gfc_cpp_option.standard_include_paths = 1;
gfc_cpp_option.verbose = 0;
gfc_cpp_option.warn_date_time = 0;
gfc_cpp_option.deps = 0;
gfc_cpp_option.deps_skip_system = 0;
gfc_cpp_option.deps_phony = 0;
gfc_cpp_option.deps_missing_are_generated = 0;
gfc_cpp_option.deps_filename = NULL;
gfc_cpp_option.deps_filename_user = NULL;
gfc_cpp_option.multilib = NULL;
gfc_cpp_option.prefix = NULL;
gfc_cpp_option.sysroot = TARGET_SYSTEM_ROOT;
gfc_cpp_option.deferred_opt = XNEWVEC (gfc_cpp_deferred_opt_t,
decoded_options_count);
gfc_cpp_option.deferred_opt_count = 0;
}
int
gfc_cpp_handle_option (size_t scode, const char *arg, int value ATTRIBUTE_UNUSED)
{
int result = 1;
enum opt_code code = (enum opt_code) scode;
switch (code)
{
default:
result = 0;
break;
case OPT_cpp_:
gfc_cpp_option.temporary_filename = arg;
break;
case OPT_nocpp:
gfc_cpp_option.temporary_filename = 0L;
break;
case OPT_d:
for ( ; *arg; ++arg)
switch (*arg)
{
case 'D':
case 'M':
case 'N':
case 'U':
gfc_cpp_option.dump_macros = *arg;
break;
case 'I':
gfc_cpp_option.dump_includes = 1;
break;
}
break;
case OPT_fworking_directory:
gfc_cpp_option.working_directory = value;
break;
case OPT_idirafter:
gfc_cpp_add_include_path_after (xstrdup(arg), true);
break;
case OPT_imultilib:
gfc_cpp_option.multilib = arg;
break;
case OPT_iprefix:
gfc_cpp_option.prefix = arg;
break;
case OPT_isysroot:
gfc_cpp_option.sysroot = arg;
break;
case OPT_iquote:
case OPT_isystem:
gfc_cpp_add_include_path (xstrdup(arg), true);
break;
case OPT_nostdinc:
gfc_cpp_option.standard_include_paths = value;
break;
case OPT_o:
if (!gfc_cpp_option.output_filename)
gfc_cpp_option.output_filename = arg;
else
gfc_fatal_error ("output filename specified twice");
break;
case OPT_undef:
gfc_cpp_option.no_predefined = value;
break;
case OPT_v:
gfc_cpp_option.verbose = value;
break;
case OPT_Wdate_time:
gfc_cpp_option.warn_date_time = value;
break;
case OPT_A:
case OPT_D:
case OPT_U:
gfc_cpp_option.deferred_opt[gfc_cpp_option.deferred_opt_count].code = code;
gfc_cpp_option.deferred_opt[gfc_cpp_option.deferred_opt_count].arg = arg;
gfc_cpp_option.deferred_opt_count++;
break;
case OPT_C:
gfc_cpp_option.discard_comments = 0;
break;
case OPT_CC:
gfc_cpp_option.discard_comments = 0;
gfc_cpp_option.discard_comments_in_macro_exp = 0;
break;
case OPT_E:
gfc_cpp_option.preprocess_only = 1;
break;
case OPT_H:
gfc_cpp_option.print_include_names = 1;
break;
case OPT_MM:
gfc_cpp_option.deps_skip_system = 1;
/* fall through */
case OPT_M:
gfc_cpp_option.deps = 1;
break;
case OPT_MMD:
gfc_cpp_option.deps_skip_system = 1;
/* fall through */
case OPT_MD:
gfc_cpp_option.deps = 1;
gfc_cpp_option.deps_filename = arg;
break;
case OPT_MF:
/* If specified multiple times, last one wins. */
gfc_cpp_option.deps_filename_user = arg;
break;
case OPT_MG:
gfc_cpp_option.deps_missing_are_generated = 1;
break;
case OPT_MP:
gfc_cpp_option.deps_phony = 1;
break;
case OPT_MQ:
case OPT_MT:
gfc_cpp_option.deferred_opt[gfc_cpp_option.deferred_opt_count].code = code;
gfc_cpp_option.deferred_opt[gfc_cpp_option.deferred_opt_count].arg = arg;
gfc_cpp_option.deferred_opt_count++;
break;
case OPT_P:
gfc_cpp_option.no_line_commands = 1;
break;
}
return result;
}
/* This function needs to be called before gfc_cpp_register_include_paths
as the latter may diagnose missing include directories. */
static void
gfc_cpp_init_cb (void)
{
struct cpp_callbacks *cb;
cb = cpp_get_callbacks (cpp_in);
cb->file_change = cb_file_change;
cb->line_change = cb_line_change;
cb->ident = cb_ident;
cb->def_pragma = cb_def_pragma;
cb->diagnostic = cb_cpp_diagnostic;
if (gfc_cpp_option.dump_includes)
cb->include = cb_include;
if ((gfc_cpp_option.dump_macros == 'D')
|| (gfc_cpp_option.dump_macros == 'N'))
{
cb->define = cb_define;
cb->undef = cb_undef;
}
if (gfc_cpp_option.dump_macros == 'U')
{
cb->before_define = dump_queued_macros;
cb->used_define = cb_used_define;
cb->used_undef = cb_used_undef;
}
}
void
gfc_cpp_post_options (bool verbose_missing_dir_warn)
{
/* Any preprocessing-related option without '-cpp' is considered
an error. */
if (!gfc_cpp_enabled ()
&& (gfc_cpp_preprocess_only ()
|| gfc_cpp_makedep ()
|| !gfc_cpp_option.discard_comments
|| !gfc_cpp_option.discard_comments_in_macro_exp
|| gfc_cpp_option.print_include_names
|| gfc_cpp_option.no_line_commands
|| gfc_cpp_option.dump_macros
|| gfc_cpp_option.dump_includes))
gfc_fatal_error ("To enable preprocessing, use %<-cpp%>");
if (!gfc_cpp_enabled ())
return;
cpp_in = cpp_create_reader (CLK_GNUC89, NULL, line_table);
gcc_assert (cpp_in);
/* The cpp_options-structure defines far more flags than those set here.
If any other is implemented, see c-opt.c (sanitize_cpp_opts) for
inter-option dependencies that may need to be enforced. */
cpp_option = cpp_get_options (cpp_in);
gcc_assert (cpp_option);
/* TODO: allow non-traditional modes, e.g. by -cpp-std=...? */
cpp_option->traditional = 1;
cpp_option->cplusplus_comments = 0;
cpp_option->cpp_pedantic = pedantic;
cpp_option->dollars_in_ident = flag_dollar_ok;
cpp_option->discard_comments = gfc_cpp_option.discard_comments;
cpp_option->discard_comments_in_macro_exp = gfc_cpp_option.discard_comments_in_macro_exp;
cpp_option->print_include_names = gfc_cpp_option.print_include_names;
cpp_option->preprocessed = gfc_option.flag_preprocessed;
cpp_option->warn_date_time = gfc_cpp_option.warn_date_time;
if (gfc_cpp_makedep ())
{
cpp_option->deps.style = DEPS_USER;
cpp_option->deps.phony_targets = gfc_cpp_option.deps_phony;
cpp_option->deps.missing_files = gfc_cpp_option.deps_missing_are_generated;
/* -MF <arg> overrides -M[M]D. */
if (gfc_cpp_option.deps_filename_user)
gfc_cpp_option.deps_filename = gfc_cpp_option.deps_filename_user;
}
if (gfc_cpp_option.working_directory == -1)
gfc_cpp_option.working_directory = (debug_info_level != DINFO_LEVEL_NONE);
cpp_post_options (cpp_in);
/* Let diagnostics infrastructure know how to convert input files the same
way libcpp will do it, namely, with no charset conversion but with
skipping of a UTF-8 BOM if present. */
diagnostic_initialize_input_context (global_dc, nullptr, true);
gfc_cpp_init_cb ();
gfc_cpp_register_include_paths (verbose_missing_dir_warn);
}
void
gfc_cpp_init_0 (void)
{
/* Initialize the print structure. Setting print.src_line to -1 here is
a trick to guarantee that the first token of the file will cause
a linemarker to be output by maybe_print_line. */
print.src_line = -1;
print.printed = 0;
print.prev = 0;
print.first_time = 1;
if (gfc_cpp_preprocess_only ())
{
if (gfc_cpp_option.output_filename)
{
/* This needs cheating: with "-E -o <file>", the user wants the
preprocessed output in <file>. However, if nothing is done
about it <file> is also used for assembler output. Hence, it
is necessary to redirect assembler output (actually nothing
as -E implies -fsyntax-only) to another file, otherwise the
output from preprocessing is lost. */
asm_file_name = gfc_cpp_option.temporary_filename;
print.outf = fopen (gfc_cpp_option.output_filename, "w");
if (print.outf == NULL)
gfc_fatal_error ("opening output file %qs: %s",
gfc_cpp_option.output_filename,
xstrerror (errno));
}
else
print.outf = stdout;
}
else
{
print.outf = fopen (gfc_cpp_option.temporary_filename, "w");
if (print.outf == NULL)
gfc_fatal_error ("opening output file %qs: %s",
gfc_cpp_option.temporary_filename, xstrerror (errno));
}
gcc_assert(cpp_in);
if (!cpp_read_main_file (cpp_in, gfc_source_file))
errorcount++;
}
void
gfc_cpp_init (void)
{
int i;
if (gfc_option.flag_preprocessed)
return;
cpp_change_file (cpp_in, LC_RENAME, special_fname_builtin ());
if (!gfc_cpp_option.no_predefined)
{
/* Make sure all of the builtins about to be declared have
BUILTINS_LOCATION has their location_t. */
cpp_force_token_locations (cpp_in, BUILTINS_LOCATION);
cpp_define_builtins (cpp_in);
cpp_stop_forcing_token_locations (cpp_in);
}
/* Handle deferred options from command-line. */
cpp_change_file (cpp_in, LC_RENAME, _("<command-line>"));
for (i = 0; i < gfc_cpp_option.deferred_opt_count; i++)
{
gfc_cpp_deferred_opt_t *opt = &gfc_cpp_option.deferred_opt[i];
if (opt->code == OPT_D)
cpp_define (cpp_in, opt->arg);
else if (opt->code == OPT_U)
cpp_undef (cpp_in, opt->arg);
else if (opt->code == OPT_A)
{
if (opt->arg[0] == '-')
cpp_unassert (cpp_in, opt->arg + 1);
else
cpp_assert (cpp_in, opt->arg);
}
else if (opt->code == OPT_MT || opt->code == OPT_MQ)
if (mkdeps *deps = cpp_get_deps (cpp_in))
deps_add_target (deps, opt->arg, opt->code == OPT_MQ);
}
/* Pre-defined macros for non-required INTEGER kind types. */
for (gfc_integer_info *itype = gfc_integer_kinds; itype->kind != 0; itype++)
{
if (itype->kind == 1)
cpp_define (cpp_in, "__GFC_INT_1__=1");
if (itype->kind == 2)
cpp_define (cpp_in, "__GFC_INT_2__=1");
if (itype->kind == 8)
cpp_define (cpp_in, "__GFC_INT_8__=1");
if (itype->kind == 16)
cpp_define (cpp_in, "__GFC_INT_16__=1");
}
/* Pre-defined macros for non-required REAL kind types. */
for (gfc_real_info *rtype = gfc_real_kinds; rtype->kind != 0; rtype++)
{
if (rtype->kind == 10)
cpp_define (cpp_in, "__GFC_REAL_10__=1");
if (rtype->kind == 16)
cpp_define (cpp_in, "__GFC_REAL_16__=1");
}
if (gfc_cpp_option.working_directory
&& gfc_cpp_option.preprocess_only && !gfc_cpp_option.no_line_commands)
pp_dir_change (cpp_in, get_src_pwd ());
}
bool
gfc_cpp_preprocess (const char *source_file)
{
if (!gfc_cpp_enabled ())
return false;
cpp_change_file (cpp_in, LC_RENAME, source_file);
if (cpp_option->traditional)
scan_translation_unit_trad (cpp_in);
else
scan_translation_unit (cpp_in);
/* -dM command line option. */
if (gfc_cpp_preprocess_only () &&
gfc_cpp_option.dump_macros == 'M')
{
putc ('\n', print.outf);
cpp_forall_identifiers (cpp_in, dump_macro, NULL);
}
putc ('\n', print.outf);
if (!gfc_cpp_preprocess_only ()
|| (gfc_cpp_preprocess_only () && gfc_cpp_option.output_filename))
fclose (print.outf);
return true;
}
void
gfc_cpp_done (void)
{
if (!gfc_cpp_enabled ())
return;
gcc_assert (cpp_in);
if (gfc_cpp_makedep ())
{
if (gfc_cpp_option.deps_filename)
{
FILE *f = fopen (gfc_cpp_option.deps_filename, "w");
if (f)
{
cpp_finish (cpp_in, f);
fclose (f);
}
else
gfc_fatal_error ("opening output file %qs: %s",
gfc_cpp_option.deps_filename,
xstrerror (errno));
}
else
cpp_finish (cpp_in, stdout);
}
cpp_undef_all (cpp_in);
cpp_clear_file_cache (cpp_in);
}
/* PATH must be malloc-ed and NULL-terminated. */
void
gfc_cpp_add_include_path (char *path, bool user_supplied)
{
/* CHAIN sets cpp_dir->sysp which differs from 0 if PATH is a system
include path. Fortran does not define any system include paths. */
int cxx_aware = 0;
add_path (path, INC_BRACKET, cxx_aware, user_supplied);
}
void
gfc_cpp_add_include_path_after (char *path, bool user_supplied)
{
int cxx_aware = 0;
add_path (path, INC_AFTER, cxx_aware, user_supplied);
}
static void scan_translation_unit_trad (cpp_reader *);
static void account_for_newlines (const unsigned char *, size_t);
static int dump_macro (cpp_reader *, cpp_hashnode *, void *);
static void print_line (location_t, const char *);
static void maybe_print_line (location_t);
/* Writes out the preprocessed file, handling spacing and paste
avoidance issues. */
static void
scan_translation_unit (cpp_reader *pfile)
{
bool avoid_paste = false;
print.source = NULL;
for (;;)
{
const cpp_token *token = cpp_get_token (pfile);
if (token->type == CPP_PADDING)
{
avoid_paste = true;
if (print.source == NULL
|| (!(print.source->flags & PREV_WHITE)
&& token->val.source == NULL))
print.source = token->val.source;
continue;
}
if (token->type == CPP_EOF)
break;
/* Subtle logic to output a space if and only if necessary. */
if (avoid_paste)
{
if (print.source == NULL)
print.source = token;
if (print.source->flags & PREV_WHITE
|| (print.prev
&& cpp_avoid_paste (pfile, print.prev, token))
|| (print.prev == NULL && token->type == CPP_HASH))
putc (' ', print.outf);
}
else if (token->flags & PREV_WHITE)
putc (' ', print.outf);
avoid_paste = false;
print.source = NULL;
print.prev = token;
cpp_output_token (token, print.outf);
if (token->type == CPP_COMMENT)
account_for_newlines (token->val.str.text, token->val.str.len);
}
}
/* Adjust print.src_line for newlines embedded in output. */
static void
account_for_newlines (const unsigned char *str, size_t len)
{
while (len--)
if (*str++ == '\n')
print.src_line++;
}
/* Writes out a traditionally preprocessed file. */
static void
scan_translation_unit_trad (cpp_reader *pfile)
{
while (_cpp_read_logical_line_trad (pfile))
{
size_t len = pfile->out.cur - pfile->out.base;
maybe_print_line (pfile->out.first_line);
fwrite (pfile->out.base, 1, len, print.outf);
print.printed = 1;
if (!CPP_OPTION (pfile, discard_comments))
account_for_newlines (pfile->out.base, len);
}
}
/* If the token read on logical line LINE needs to be output on a
different line to the current one, output the required newlines or
a line marker. */
static void
maybe_print_line (location_t src_loc)
{
const line_map_ordinary *map
= linemap_check_ordinary (linemap_lookup (line_table, src_loc));
int src_line = SOURCE_LINE (map, src_loc);
/* End the previous line of text. */
if (print.printed)
{
putc ('\n', print.outf);
print.src_line++;
print.printed = 0;
}
if (src_line >= print.src_line && src_line < print.src_line + 8)
{
while (src_line > print.src_line)
{
putc ('\n', print.outf);
print.src_line++;
}
}
else
print_line (src_loc, "");
}
/* Output a line marker for logical line LINE. Special flags are "1"
or "2" indicating entering or leaving a file. */
static void
print_line (location_t src_loc, const char *special_flags)
{
/* End any previous line of text. */
if (print.printed)
putc ('\n', print.outf);
print.printed = 0;
if (!gfc_cpp_option.no_line_commands)
{
expanded_location loc;
size_t to_file_len;
unsigned char *to_file_quoted;
unsigned char *p;
int sysp;
loc = expand_location (src_loc);
to_file_len = strlen (loc.file);
to_file_quoted = (unsigned char *) alloca (to_file_len * 4 + 1);
print.src_line = loc.line;
/* cpp_quote_string does not nul-terminate, so we have to do it
ourselves. */
p = cpp_quote_string (to_file_quoted,
(const unsigned char *) loc.file, to_file_len);
*p = '\0';
fprintf (print.outf, "# %u \"%s\"%s",
print.src_line == 0 ? 1 : print.src_line,
to_file_quoted, special_flags);
sysp = in_system_header_at (src_loc);
if (sysp == 2)
fputs (" 3 4", print.outf);
else if (sysp == 1)
fputs (" 3", print.outf);
putc ('\n', print.outf);
}
}
static void
cb_file_change (cpp_reader * ARG_UNUSED (pfile), const line_map_ordinary *map)
{
const char *flags = "";
if (gfc_cpp_option.no_line_commands)
return;
if (!map)
return;
if (print.first_time)
{
/* Avoid printing foo.i when the main file is foo.c. */
if (!cpp_get_options (cpp_in)->preprocessed)
print_line (map->start_location, flags);
print.first_time = 0;
}
else
{
/* Bring current file to correct line when entering a new file. */
if (map->reason == LC_ENTER)
maybe_print_line (linemap_included_from (map));
if (map->reason == LC_ENTER)
flags = " 1";
else if (map->reason == LC_LEAVE)
flags = " 2";
print_line (map->start_location, flags);
}
}
/* Called when a line of output is started. TOKEN is the first token
of the line, and at end of file will be CPP_EOF. */
static void
cb_line_change (cpp_reader *pfile, const cpp_token *token,
int parsing_args)
{
location_t src_loc = token->src_loc;
if (token->type == CPP_EOF || parsing_args)
return;
maybe_print_line (src_loc);
print.prev = 0;
print.source = 0;
/* Supply enough spaces to put this token in its original column,
one space per column greater than 2, since scan_translation_unit
will provide a space if PREV_WHITE. Don't bother trying to
reconstruct tabs; we can't get it right in general, and nothing
ought to care. Some things do care; the fault lies with them. */
if (!CPP_OPTION (pfile, traditional))
{
const line_map_ordinary *map
= linemap_check_ordinary (linemap_lookup (line_table, src_loc));
int spaces = SOURCE_COLUMN (map, src_loc) - 2;
print.printed = 1;
while (-- spaces >= 0)
putc (' ', print.outf);
}
}
static void
cb_ident (cpp_reader *pfile ATTRIBUTE_UNUSED, location_t line,
const cpp_string *str)
{
maybe_print_line (line);
fprintf (print.outf, "#ident %s\n", str->text);
print.src_line++;
}
static void
cb_define (cpp_reader *pfile ATTRIBUTE_UNUSED, location_t line,
cpp_hashnode *node ATTRIBUTE_UNUSED)
{
maybe_print_line (line);
fputs ("#define ", print.outf);
/* 'D' is whole definition; 'N' is name only. */
if (gfc_cpp_option.dump_macros == 'D')
fputs ((const char *) cpp_macro_definition (pfile, node),
print.outf);
else
fputs ((const char *) NODE_NAME (node), print.outf);
putc ('\n', print.outf);
if (LOCATION_LINE (line) != 0)
print.src_line++;
}
static void
cb_undef (cpp_reader *pfile ATTRIBUTE_UNUSED, location_t line,
cpp_hashnode *node)
{
maybe_print_line (line);
fprintf (print.outf, "#undef %s\n", NODE_NAME (node));
print.src_line++;
}
static void
cb_include (cpp_reader *pfile ATTRIBUTE_UNUSED, location_t line,
const unsigned char *dir, const char *header, int angle_brackets,
const cpp_token **comments)
{
maybe_print_line (line);
if (angle_brackets)
fprintf (print.outf, "#%s <%s>", dir, header);
else
fprintf (print.outf, "#%s \"%s\"", dir, header);
if (comments != NULL)
{
while (*comments != NULL)
{
if ((*comments)->flags & PREV_WHITE)
putc (' ', print.outf);
cpp_output_token (*comments, print.outf);
++comments;
}
}
putc ('\n', print.outf);
print.src_line++;
}
/* Dump out the hash table. */
static int
dump_macro (cpp_reader *pfile, cpp_hashnode *node, void *v ATTRIBUTE_UNUSED)
{
if (cpp_user_macro_p (node))
{
fputs ("#define ", print.outf);
fputs ((const char *) cpp_macro_definition (pfile, node),
print.outf);
putc ('\n', print.outf);
print.src_line++;
}
return 1;
}
static void
cb_used_define (cpp_reader *pfile, location_t line ATTRIBUTE_UNUSED,
cpp_hashnode *node)
{
gfc_cpp_macro_queue *q;
q = XNEW (gfc_cpp_macro_queue);
q->macro = xstrdup ((const char *) cpp_macro_definition (pfile, node));
q->next = cpp_define_queue;
cpp_define_queue = q;
}
/* Return the gcc option code associated with the reason for a cpp
message, or 0 if none. */
static int
cb_cpp_diagnostic_cpp_option (enum cpp_warning_reason reason)
{
const struct cpp_reason_option_codes_t *entry;
for (entry = cpp_reason_option_codes; entry->reason != CPP_W_NONE; entry++)
if (entry->reason == reason)
return entry->option_code;
return 0;
}
/* Callback from cpp_error for PFILE to print diagnostics from the
preprocessor. The diagnostic is of type LEVEL, with REASON set
to the reason code if LEVEL is represents a warning, at location
RICHLOC; MSG is the translated message and AP the arguments.
Returns true if a diagnostic was emitted, false otherwise. */
static bool
cb_cpp_diagnostic (cpp_reader *pfile ATTRIBUTE_UNUSED,
enum cpp_diagnostic_level level,
enum cpp_warning_reason reason,
rich_location *richloc,
const char *msg, va_list *ap)
{
diagnostic_info diagnostic;
diagnostic_t dlevel;
bool save_warn_system_headers = global_dc->dc_warn_system_headers;
bool ret;
switch (level)
{
case CPP_DL_WARNING_SYSHDR:
global_dc->dc_warn_system_headers = 1;
/* Fall through. */
case CPP_DL_WARNING:
dlevel = DK_WARNING;
break;
case CPP_DL_PEDWARN:
dlevel = DK_PEDWARN;
break;
case CPP_DL_ERROR:
dlevel = DK_ERROR;
break;
case CPP_DL_ICE:
dlevel = DK_ICE;
break;
case CPP_DL_NOTE:
dlevel = DK_NOTE;
break;
case CPP_DL_FATAL:
dlevel = DK_FATAL;
break;
default:
gcc_unreachable ();
}
diagnostic_set_info_translated (&diagnostic, msg, ap,
richloc, dlevel);
diagnostic_override_option_index (&diagnostic,
cb_cpp_diagnostic_cpp_option (reason));
ret = diagnostic_report_diagnostic (global_dc, &diagnostic);
if (level == CPP_DL_WARNING_SYSHDR)
global_dc->dc_warn_system_headers = save_warn_system_headers;
return ret;
}
/* Callback called when -fworking-director and -E to emit working
directory in cpp output file. */
void
pp_dir_change (cpp_reader *pfile ATTRIBUTE_UNUSED, const char *dir)
{
size_t to_file_len = strlen (dir);
unsigned char *to_file_quoted =
(unsigned char *) alloca (to_file_len * 4 + 1);
unsigned char *p;
/* cpp_quote_string does not nul-terminate, so we have to do it ourselves. */
p = cpp_quote_string (to_file_quoted, (const unsigned char *) dir, to_file_len);
*p = '\0';
fprintf (print.outf, "# 1 \"%s//\"\n", to_file_quoted);
}
/* Copy a #pragma directive to the preprocessed output. */
static void
cb_def_pragma (cpp_reader *pfile, location_t line)
{
maybe_print_line (line);
fputs ("#pragma ", print.outf);
cpp_output_line (pfile, print.outf);
print.src_line++;
}
static void
cb_used_undef (cpp_reader *pfile ATTRIBUTE_UNUSED,
location_t line ATTRIBUTE_UNUSED,
cpp_hashnode *node)
{
gfc_cpp_macro_queue *q;
q = XNEW (gfc_cpp_macro_queue);
q->macro = xstrdup ((const char *) NODE_NAME (node));
q->next = cpp_undefine_queue;
cpp_undefine_queue = q;
}
static void
dump_queued_macros (cpp_reader *pfile ATTRIBUTE_UNUSED)
{
gfc_cpp_macro_queue *q;
/* End the previous line of text. */
if (print.printed)
{
putc ('\n', print.outf);
print.src_line++;
print.printed = 0;
}
for (q = cpp_define_queue; q;)
{
gfc_cpp_macro_queue *oq;
fputs ("#define ", print.outf);
fputs (q->macro, print.outf);
putc ('\n', print.outf);
print.src_line++;
oq = q;
q = q->next;
free (oq->macro);
free (oq);
}
cpp_define_queue = NULL;
for (q = cpp_undefine_queue; q;)
{
gfc_cpp_macro_queue *oq;
fprintf (print.outf, "#undef %s\n", q->macro);
print.src_line++;
oq = q;
q = q->next;
free (oq->macro);
free (oq);
}
cpp_undefine_queue = NULL;
}