| /* Part of CPP library. |
| Copyright (C) 1997-2022 Free Software Foundation, Inc. |
| |
| This program 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. |
| |
| This program 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 this program; see the file COPYING3. If not see |
| <http://www.gnu.org/licenses/>. */ |
| |
| /* This header defines all the internal data structures and functions |
| that need to be visible across files. It should not be used outside |
| cpplib. */ |
| |
| #ifndef LIBCPP_INTERNAL_H |
| #define LIBCPP_INTERNAL_H |
| |
| #include "symtab.h" |
| #include "cpplib.h" |
| |
| #if HAVE_ICONV |
| #include <iconv.h> |
| #else |
| #define HAVE_ICONV 0 |
| typedef int iconv_t; /* dummy */ |
| #endif |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| struct directive; /* Deliberately incomplete. */ |
| struct pending_option; |
| struct op; |
| struct _cpp_strbuf; |
| |
| typedef bool (*convert_f) (iconv_t, const unsigned char *, size_t, |
| struct _cpp_strbuf *); |
| struct cset_converter |
| { |
| convert_f func; |
| iconv_t cd; |
| int width; |
| const char* from; |
| const char* to; |
| }; |
| |
| #define BITS_PER_CPPCHAR_T (CHAR_BIT * sizeof (cppchar_t)) |
| |
| /* Test if a sign is valid within a preprocessing number. */ |
| #define VALID_SIGN(c, prevc) \ |
| (((c) == '+' || (c) == '-') && \ |
| ((prevc) == 'e' || (prevc) == 'E' \ |
| || (((prevc) == 'p' || (prevc) == 'P') \ |
| && CPP_OPTION (pfile, extended_numbers)))) |
| |
| #define DIGIT_SEP(c) ((c) == '\'' && CPP_OPTION (pfile, digit_separators)) |
| |
| #define CPP_OPTION(PFILE, OPTION) ((PFILE)->opts.OPTION) |
| #define CPP_BUFFER(PFILE) ((PFILE)->buffer) |
| #define CPP_BUF_COLUMN(BUF, CUR) ((CUR) - (BUF)->line_base) |
| #define CPP_BUF_COL(BUF) CPP_BUF_COLUMN(BUF, (BUF)->cur) |
| |
| #define CPP_INCREMENT_LINE(PFILE, COLS_HINT) do { \ |
| const class line_maps *line_table = PFILE->line_table; \ |
| const struct line_map_ordinary *map = \ |
| LINEMAPS_LAST_ORDINARY_MAP (line_table); \ |
| linenum_type line = SOURCE_LINE (map, line_table->highest_line); \ |
| linemap_line_start (PFILE->line_table, line + 1, COLS_HINT); \ |
| } while (0) |
| |
| /* Host alignment handling. */ |
| struct dummy |
| { |
| char c; |
| union |
| { |
| double d; |
| int *p; |
| } u; |
| }; |
| |
| #define DEFAULT_ALIGNMENT offsetof (struct dummy, u) |
| #define CPP_ALIGN2(size, align) (((size) + ((align) - 1)) & ~((align) - 1)) |
| #define CPP_ALIGN(size) CPP_ALIGN2 (size, DEFAULT_ALIGNMENT) |
| |
| #define _cpp_mark_macro_used(NODE) \ |
| (cpp_user_macro_p (NODE) ? (NODE)->value.macro->used = 1 : 0) |
| |
| /* A generic memory buffer, and operations on it. */ |
| typedef struct _cpp_buff _cpp_buff; |
| struct _cpp_buff |
| { |
| struct _cpp_buff *next; |
| unsigned char *base, *cur, *limit; |
| }; |
| |
| extern _cpp_buff *_cpp_get_buff (cpp_reader *, size_t); |
| extern void _cpp_release_buff (cpp_reader *, _cpp_buff *); |
| extern void _cpp_extend_buff (cpp_reader *, _cpp_buff **, size_t); |
| extern _cpp_buff *_cpp_append_extend_buff (cpp_reader *, _cpp_buff *, size_t); |
| extern void _cpp_free_buff (_cpp_buff *); |
| extern unsigned char *_cpp_aligned_alloc (cpp_reader *, size_t); |
| extern unsigned char *_cpp_unaligned_alloc (cpp_reader *, size_t); |
| |
| #define BUFF_ROOM(BUFF) (size_t) ((BUFF)->limit - (BUFF)->cur) |
| #define BUFF_FRONT(BUFF) ((BUFF)->cur) |
| #define BUFF_LIMIT(BUFF) ((BUFF)->limit) |
| |
| /* #include types. */ |
| enum include_type |
| { |
| /* Directive-based including mechanisms. */ |
| IT_INCLUDE, /* #include */ |
| IT_INCLUDE_NEXT, /* #include_next */ |
| IT_IMPORT, /* #import */ |
| |
| /* Non-directive including mechanisms. */ |
| IT_CMDLINE, /* -include */ |
| IT_DEFAULT, /* forced header */ |
| IT_MAIN, /* main, start on line 1 */ |
| IT_PRE_MAIN, /* main, but there will be a preamble before line |
| 1 */ |
| |
| IT_DIRECTIVE_HWM = IT_IMPORT + 1, /* Directives below this. */ |
| IT_HEADER_HWM = IT_DEFAULT + 1 /* Header files below this. */ |
| }; |
| |
| union utoken |
| { |
| const cpp_token *token; |
| const cpp_token **ptoken; |
| }; |
| |
| /* A "run" of tokens; part of a chain of runs. */ |
| typedef struct tokenrun tokenrun; |
| struct tokenrun |
| { |
| tokenrun *next, *prev; |
| cpp_token *base, *limit; |
| }; |
| |
| /* Accessor macros for struct cpp_context. */ |
| #define FIRST(c) ((c)->u.iso.first) |
| #define LAST(c) ((c)->u.iso.last) |
| #define CUR(c) ((c)->u.trad.cur) |
| #define RLIMIT(c) ((c)->u.trad.rlimit) |
| |
| /* This describes some additional data that is added to the macro |
| token context of type cpp_context, when -ftrack-macro-expansion is |
| on. */ |
| typedef struct |
| { |
| /* The node of the macro we are referring to. */ |
| cpp_hashnode *macro_node; |
| /* This buffer contains an array of virtual locations. The virtual |
| location at index 0 is the virtual location of the token at index |
| 0 in the current instance of cpp_context; similarly for all the |
| other virtual locations. */ |
| location_t *virt_locs; |
| /* This is a pointer to the current virtual location. This is used |
| to iterate over the virtual locations while we iterate over the |
| tokens they belong to. */ |
| location_t *cur_virt_loc; |
| } macro_context; |
| |
| /* The kind of tokens carried by a cpp_context. */ |
| enum context_tokens_kind { |
| /* This is the value of cpp_context::tokens_kind if u.iso.first |
| contains an instance of cpp_token **. */ |
| TOKENS_KIND_INDIRECT, |
| /* This is the value of cpp_context::tokens_kind if u.iso.first |
| contains an instance of cpp_token *. */ |
| TOKENS_KIND_DIRECT, |
| /* This is the value of cpp_context::tokens_kind when the token |
| context contains tokens resulting from macro expansion. In that |
| case struct cpp_context::macro points to an instance of struct |
| macro_context. This is used only when the |
| -ftrack-macro-expansion flag is on. */ |
| TOKENS_KIND_EXTENDED |
| }; |
| |
| typedef struct cpp_context cpp_context; |
| struct cpp_context |
| { |
| /* Doubly-linked list. */ |
| cpp_context *next, *prev; |
| |
| union |
| { |
| /* For ISO macro expansion. Contexts other than the base context |
| are contiguous tokens. e.g. macro expansions, expanded |
| argument tokens. */ |
| struct |
| { |
| union utoken first; |
| union utoken last; |
| } iso; |
| |
| /* For traditional macro expansion. */ |
| struct |
| { |
| const unsigned char *cur; |
| const unsigned char *rlimit; |
| } trad; |
| } u; |
| |
| /* If non-NULL, a buffer used for storage related to this context. |
| When the context is popped, the buffer is released. */ |
| _cpp_buff *buff; |
| |
| /* If tokens_kind is TOKEN_KIND_EXTENDED, then (as we thus are in a |
| macro context) this is a pointer to an instance of macro_context. |
| Otherwise if tokens_kind is *not* TOKEN_KIND_EXTENDED, then, if |
| we are in a macro context, this is a pointer to an instance of |
| cpp_hashnode, representing the name of the macro this context is |
| for. If we are not in a macro context, then this is just NULL. |
| Note that when tokens_kind is TOKEN_KIND_EXTENDED, the memory |
| used by the instance of macro_context pointed to by this member |
| is de-allocated upon de-allocation of the instance of struct |
| cpp_context. */ |
| union |
| { |
| macro_context *mc; |
| cpp_hashnode *macro; |
| } c; |
| |
| /* This determines the type of tokens held by this context. */ |
| enum context_tokens_kind tokens_kind; |
| }; |
| |
| struct lexer_state |
| { |
| /* 1 if we're handling a directive. 2 if it's an include-like |
| directive. */ |
| unsigned char in_directive; |
| |
| /* Nonzero if in a directive that will handle padding tokens itself. |
| #include needs this to avoid problems with computed include and |
| spacing between tokens. */ |
| unsigned char directive_wants_padding; |
| |
| /* True if we are skipping a failed conditional group. */ |
| unsigned char skipping; |
| |
| /* Nonzero if in a directive that takes angle-bracketed headers. */ |
| unsigned char angled_headers; |
| |
| /* Nonzero if in a #if or #elif directive. */ |
| unsigned char in_expression; |
| |
| /* Nonzero to save comments. Turned off if discard_comments, and in |
| all directives apart from #define. */ |
| unsigned char save_comments; |
| |
| /* Nonzero if lexing __VA_ARGS__ and __VA_OPT__ are valid. */ |
| unsigned char va_args_ok; |
| |
| /* Nonzero if lexing poisoned identifiers is valid. */ |
| unsigned char poisoned_ok; |
| |
| /* Nonzero to prevent macro expansion. */ |
| unsigned char prevent_expansion; |
| |
| /* Nonzero when parsing arguments to a function-like macro. */ |
| unsigned char parsing_args; |
| |
| /* Nonzero if prevent_expansion is true only because output is |
| being discarded. */ |
| unsigned char discarding_output; |
| |
| /* Nonzero to skip evaluating part of an expression. */ |
| unsigned int skip_eval; |
| |
| /* Nonzero when tokenizing a deferred pragma. */ |
| unsigned char in_deferred_pragma; |
| |
| /* Count to token that is a header-name. */ |
| unsigned char directive_file_token; |
| |
| /* Nonzero if the deferred pragma being handled allows macro expansion. */ |
| unsigned char pragma_allow_expansion; |
| |
| /* Nonzero if _Pragma should not be interpreted. */ |
| unsigned char ignore__Pragma; |
| }; |
| |
| /* Special nodes - identifiers with predefined significance. */ |
| struct spec_nodes |
| { |
| cpp_hashnode *n_defined; /* defined operator */ |
| cpp_hashnode *n_true; /* C++ keyword true */ |
| cpp_hashnode *n_false; /* C++ keyword false */ |
| cpp_hashnode *n__VA_ARGS__; /* C99 vararg macros */ |
| cpp_hashnode *n__VA_OPT__; /* C++ vararg macros */ |
| |
| enum {M_EXPORT, M_MODULE, M_IMPORT, M__IMPORT, M_HWM}; |
| |
| /* C++20 modules, only set when module_directives is in effect. |
| incoming variants [0], outgoing ones [1] */ |
| cpp_hashnode *n_modules[M_HWM][2]; |
| }; |
| |
| typedef struct _cpp_line_note _cpp_line_note; |
| struct _cpp_line_note |
| { |
| /* Location in the clean line the note refers to. */ |
| const unsigned char *pos; |
| |
| /* Type of note. The 9 'from' trigraph characters represent those |
| trigraphs, '\\' an escaped newline, ' ' an escaped newline with |
| intervening space, 0 represents a note that has already been handled, |
| and anything else is invalid. */ |
| unsigned int type; |
| }; |
| |
| /* Represents the contents of a file cpplib has read in. */ |
| struct cpp_buffer |
| { |
| const unsigned char *cur; /* Current location. */ |
| const unsigned char *line_base; /* Start of current physical line. */ |
| const unsigned char *next_line; /* Start of to-be-cleaned logical line. */ |
| |
| const unsigned char *buf; /* Entire character buffer. */ |
| const unsigned char *rlimit; /* Writable byte at end of file. */ |
| const unsigned char *to_free; /* Pointer that should be freed when |
| popping the buffer. */ |
| |
| _cpp_line_note *notes; /* Array of notes. */ |
| unsigned int cur_note; /* Next note to process. */ |
| unsigned int notes_used; /* Number of notes. */ |
| unsigned int notes_cap; /* Size of allocated array. */ |
| |
| struct cpp_buffer *prev; |
| |
| /* Pointer into the file table; non-NULL if this is a file buffer. |
| Used for include_next and to record control macros. */ |
| struct _cpp_file *file; |
| |
| /* Saved value of __TIMESTAMP__ macro - date and time of last modification |
| of the assotiated file. */ |
| const unsigned char *timestamp; |
| |
| /* Value of if_stack at start of this file. |
| Used to prohibit unmatched #endif (etc) in an include file. */ |
| struct if_stack *if_stack; |
| |
| /* True if we need to get the next clean line. */ |
| bool need_line : 1; |
| |
| /* True if we have already warned about C++ comments in this file. |
| The warning happens only for C89 extended mode with -pedantic on, |
| or for -Wtraditional, and only once per file (otherwise it would |
| be far too noisy). */ |
| bool warned_cplusplus_comments : 1; |
| |
| /* True if we don't process trigraphs and escaped newlines. True |
| for preprocessed input, command line directives, and _Pragma |
| buffers. */ |
| bool from_stage3 : 1; |
| |
| /* At EOF, a buffer is automatically popped. If RETURN_AT_EOF is |
| true, a CPP_EOF token is then returned. Otherwise, the next |
| token from the enclosing buffer is returned. */ |
| bool return_at_eof : 1; |
| |
| /* One for a system header, two for a C system header file that therefore |
| needs to be extern "C" protected in C++, and zero otherwise. */ |
| unsigned char sysp; |
| |
| /* The directory of the this buffer's file. Its NAME member is not |
| allocated, so we don't need to worry about freeing it. */ |
| struct cpp_dir dir; |
| |
| /* Descriptor for converting from the input character set to the |
| source character set. */ |
| struct cset_converter input_cset_desc; |
| }; |
| |
| /* The list of saved macros by push_macro pragma. */ |
| struct def_pragma_macro { |
| /* Chain element to previous saved macro. */ |
| struct def_pragma_macro *next; |
| /* Name of the macro. */ |
| char *name; |
| /* The stored macro content. */ |
| unsigned char *definition; |
| |
| /* Definition line number. */ |
| location_t line; |
| /* If macro defined in system header. */ |
| unsigned int syshdr : 1; |
| /* Nonzero if it has been expanded or had its existence tested. */ |
| unsigned int used : 1; |
| |
| /* Mark if we save an undefined macro. */ |
| unsigned int is_undef : 1; |
| /* Nonzero if it was a builtin macro. */ |
| unsigned int is_builtin : 1; |
| }; |
| |
| /* A cpp_reader encapsulates the "state" of a pre-processor run. |
| Applying cpp_get_token repeatedly yields a stream of pre-processor |
| tokens. Usually, there is only one cpp_reader object active. */ |
| struct cpp_reader |
| { |
| /* Top of buffer stack. */ |
| cpp_buffer *buffer; |
| |
| /* Overlaid buffer (can be different after processing #include). */ |
| cpp_buffer *overlaid_buffer; |
| |
| /* Lexer state. */ |
| struct lexer_state state; |
| |
| /* Source line tracking. */ |
| class line_maps *line_table; |
| |
| /* The line of the '#' of the current directive. */ |
| location_t directive_line; |
| |
| /* Memory buffers. */ |
| _cpp_buff *a_buff; /* Aligned permanent storage. */ |
| _cpp_buff *u_buff; /* Unaligned permanent storage. */ |
| _cpp_buff *free_buffs; /* Free buffer chain. */ |
| |
| /* Context stack. */ |
| struct cpp_context base_context; |
| struct cpp_context *context; |
| |
| /* If in_directive, the directive if known. */ |
| const struct directive *directive; |
| |
| /* Token generated while handling a directive, if any. */ |
| cpp_token directive_result; |
| |
| /* When expanding a macro at top-level, this is the location of the |
| macro invocation. */ |
| location_t invocation_location; |
| |
| /* This is the node representing the macro being expanded at |
| top-level. The value of this data member is valid iff |
| cpp_in_macro_expansion_p() returns TRUE. */ |
| cpp_hashnode *top_most_macro_node; |
| |
| /* Nonzero if we are about to expand a macro. Note that if we are |
| really expanding a macro, the function macro_of_context returns |
| the macro being expanded and this flag is set to false. Client |
| code should use the function cpp_in_macro_expansion_p to know if we |
| are either about to expand a macro, or are actually expanding |
| one. */ |
| bool about_to_expand_macro_p; |
| |
| /* Search paths for include files. */ |
| struct cpp_dir *quote_include; /* "" */ |
| struct cpp_dir *bracket_include; /* <> */ |
| struct cpp_dir no_search_path; /* No path. */ |
| |
| /* Chain of all hashed _cpp_file instances. */ |
| struct _cpp_file *all_files; |
| |
| struct _cpp_file *main_file; |
| |
| /* File and directory hash table. */ |
| struct htab *file_hash; |
| struct htab *dir_hash; |
| struct file_hash_entry_pool *file_hash_entries; |
| |
| /* Negative path lookup hash table. */ |
| struct htab *nonexistent_file_hash; |
| struct obstack nonexistent_file_ob; |
| |
| /* Nonzero means don't look for #include "foo" the source-file |
| directory. */ |
| bool quote_ignores_source_dir; |
| |
| /* Nonzero if any file has contained #pragma once or #import has |
| been used. */ |
| bool seen_once_only; |
| |
| /* Multiple include optimization. */ |
| const cpp_hashnode *mi_cmacro; |
| const cpp_hashnode *mi_ind_cmacro; |
| bool mi_valid; |
| |
| /* Lexing. */ |
| cpp_token *cur_token; |
| tokenrun base_run, *cur_run; |
| unsigned int lookaheads; |
| |
| /* Nonzero prevents the lexer from re-using the token runs. */ |
| unsigned int keep_tokens; |
| |
| /* Buffer to hold macro definition string. */ |
| unsigned char *macro_buffer; |
| unsigned int macro_buffer_len; |
| |
| /* Descriptor for converting from the source character set to the |
| execution character set. */ |
| struct cset_converter narrow_cset_desc; |
| |
| /* Descriptor for converting from the source character set to the |
| UTF-8 execution character set. */ |
| struct cset_converter utf8_cset_desc; |
| |
| /* Descriptor for converting from the source character set to the |
| UTF-16 execution character set. */ |
| struct cset_converter char16_cset_desc; |
| |
| /* Descriptor for converting from the source character set to the |
| UTF-32 execution character set. */ |
| struct cset_converter char32_cset_desc; |
| |
| /* Descriptor for converting from the source character set to the |
| wide execution character set. */ |
| struct cset_converter wide_cset_desc; |
| |
| /* Date and time text. Calculated together if either is requested. */ |
| const unsigned char *date; |
| const unsigned char *time; |
| |
| /* Time stamp, set idempotently lazily. */ |
| time_t time_stamp; |
| int time_stamp_kind; /* Or errno. */ |
| |
| /* A token forcing paste avoidance, and one demarking macro arguments. */ |
| cpp_token avoid_paste; |
| cpp_token endarg; |
| |
| /* Opaque handle to the dependencies of mkdeps.cc. */ |
| class mkdeps *deps; |
| |
| /* Obstack holding all macro hash nodes. This never shrinks. |
| See identifiers.cc */ |
| struct obstack hash_ob; |
| |
| /* Obstack holding buffer and conditional structures. This is a |
| real stack. See directives.cc. */ |
| struct obstack buffer_ob; |
| |
| /* Pragma table - dynamic, because a library user can add to the |
| list of recognized pragmas. */ |
| struct pragma_entry *pragmas; |
| |
| /* Call backs to cpplib client. */ |
| struct cpp_callbacks cb; |
| |
| /* Identifier hash table. */ |
| struct ht *hash_table; |
| |
| /* Expression parser stack. */ |
| struct op *op_stack, *op_limit; |
| |
| /* User visible options. */ |
| struct cpp_options opts; |
| |
| /* Special nodes - identifiers with predefined significance to the |
| preprocessor. */ |
| struct spec_nodes spec_nodes; |
| |
| /* Whether cpplib owns the hashtable. */ |
| bool our_hashtable; |
| |
| /* Traditional preprocessing output buffer (a logical line). */ |
| struct |
| { |
| unsigned char *base; |
| unsigned char *limit; |
| unsigned char *cur; |
| location_t first_line; |
| } out; |
| |
| /* Used for buffer overlays by traditional.cc. */ |
| const unsigned char *saved_cur, *saved_rlimit, *saved_line_base; |
| |
| /* A saved list of the defined macros, for dependency checking |
| of precompiled headers. */ |
| struct cpp_savedstate *savedstate; |
| |
| /* Next value of __COUNTER__ macro. */ |
| unsigned int counter; |
| |
| /* Table of comments, when state.save_comments is true. */ |
| cpp_comment_table comments; |
| |
| /* List of saved macros by push_macro. */ |
| struct def_pragma_macro *pushed_macros; |
| |
| /* If non-zero, the lexer will use this location for the next token |
| instead of getting a location from the linemap. */ |
| location_t forced_token_location; |
| |
| /* Location identifying the main source file -- intended to be line |
| zero of said file. */ |
| location_t main_loc; |
| |
| /* Returns true iff we should warn about UTF-8 bidirectional control |
| characters. */ |
| bool warn_bidi_p () const |
| { |
| return (CPP_OPTION (this, cpp_warn_bidirectional) |
| & (bidirectional_unpaired|bidirectional_any)); |
| } |
| }; |
| |
| /* Character classes. Based on the more primitive macros in safe-ctype.h. |
| If the definition of `numchar' looks odd to you, please look up the |
| definition of a pp-number in the C standard [section 6.4.8 of C99]. |
| |
| In the unlikely event that characters other than \r and \n enter |
| the set is_vspace, the macro handle_newline() in lex.cc must be |
| updated. */ |
| #define _dollar_ok(x) ((x) == '$' && CPP_OPTION (pfile, dollars_in_ident)) |
| |
| #define is_idchar(x) (ISIDNUM(x) || _dollar_ok(x)) |
| #define is_numchar(x) ISIDNUM(x) |
| #define is_idstart(x) (ISIDST(x) || _dollar_ok(x)) |
| #define is_numstart(x) ISDIGIT(x) |
| #define is_hspace(x) ISBLANK(x) |
| #define is_vspace(x) IS_VSPACE(x) |
| #define is_nvspace(x) IS_NVSPACE(x) |
| #define is_space(x) IS_SPACE_OR_NUL(x) |
| |
| #define SEEN_EOL() (pfile->cur_token[-1].type == CPP_EOF) |
| |
| /* This table is constant if it can be initialized at compile time, |
| which is the case if cpp was compiled with GCC >=2.7, or another |
| compiler that supports C99. */ |
| #if HAVE_DESIGNATED_INITIALIZERS |
| extern const unsigned char _cpp_trigraph_map[UCHAR_MAX + 1]; |
| #else |
| extern unsigned char _cpp_trigraph_map[UCHAR_MAX + 1]; |
| #endif |
| |
| #if !defined (HAVE_UCHAR) && !defined (IN_GCC) |
| typedef unsigned char uchar; |
| #endif |
| |
| #define UC (const uchar *) /* Intended use: UC"string" */ |
| |
| /* Accessors. */ |
| |
| inline int |
| _cpp_in_system_header (cpp_reader *pfile) |
| { |
| return pfile->buffer ? pfile->buffer->sysp : 0; |
| } |
| #define CPP_PEDANTIC(PF) CPP_OPTION (PF, cpp_pedantic) |
| #define CPP_WTRADITIONAL(PF) CPP_OPTION (PF, cpp_warn_traditional) |
| |
| /* Return true if we're in the main file (unless it's considered to be |
| an include file in its own right. */ |
| inline int |
| _cpp_in_main_source_file (cpp_reader *pfile) |
| { |
| return (!CPP_OPTION (pfile, main_search) |
| && pfile->buffer->file == pfile->main_file); |
| } |
| |
| /* True if NODE is a macro for the purposes of ifdef, defined etc. */ |
| inline bool _cpp_defined_macro_p (cpp_hashnode *node) |
| { |
| /* Do not treat conditional macros as being defined. This is due to |
| the powerpc port using conditional macros for 'vector', 'bool', |
| and 'pixel' to act as conditional keywords. This messes up tests |
| like #ifndef bool. */ |
| return cpp_macro_p (node) && !(node->flags & NODE_CONDITIONAL); |
| } |
| |
| /* In macro.cc */ |
| extern bool _cpp_notify_macro_use (cpp_reader *pfile, cpp_hashnode *node, |
| location_t); |
| inline bool _cpp_maybe_notify_macro_use (cpp_reader *pfile, cpp_hashnode *node, |
| location_t loc) |
| { |
| if (!(node->flags & NODE_USED)) |
| return _cpp_notify_macro_use (pfile, node, loc); |
| return true; |
| } |
| extern cpp_macro *_cpp_new_macro (cpp_reader *, cpp_macro_kind, void *); |
| extern void _cpp_free_definition (cpp_hashnode *); |
| extern bool _cpp_create_definition (cpp_reader *, cpp_hashnode *); |
| extern void _cpp_pop_context (cpp_reader *); |
| extern void _cpp_push_text_context (cpp_reader *, cpp_hashnode *, |
| const unsigned char *, size_t); |
| extern bool _cpp_save_parameter (cpp_reader *, unsigned, cpp_hashnode *, |
| cpp_hashnode *); |
| extern void _cpp_unsave_parameters (cpp_reader *, unsigned); |
| extern bool _cpp_arguments_ok (cpp_reader *, cpp_macro *, const cpp_hashnode *, |
| unsigned int); |
| extern const unsigned char *_cpp_builtin_macro_text (cpp_reader *, |
| cpp_hashnode *, |
| location_t = 0); |
| extern int _cpp_warn_if_unused_macro (cpp_reader *, cpp_hashnode *, void *); |
| extern void _cpp_push_token_context (cpp_reader *, cpp_hashnode *, |
| const cpp_token *, unsigned int); |
| extern void _cpp_backup_tokens_direct (cpp_reader *, unsigned int); |
| |
| /* In identifiers.cc */ |
| extern void _cpp_init_hashtable (cpp_reader *, cpp_hash_table *); |
| extern void _cpp_destroy_hashtable (cpp_reader *); |
| |
| /* In files.cc */ |
| enum _cpp_find_file_kind |
| { _cpp_FFK_NORMAL, _cpp_FFK_FAKE, _cpp_FFK_PRE_INCLUDE, _cpp_FFK_HAS_INCLUDE }; |
| extern _cpp_file *_cpp_find_file (cpp_reader *, const char *, cpp_dir *, |
| int angle, _cpp_find_file_kind, location_t); |
| extern bool _cpp_find_failed (_cpp_file *); |
| extern void _cpp_mark_file_once_only (cpp_reader *, struct _cpp_file *); |
| extern const char *_cpp_find_header_unit (cpp_reader *, const char *file, |
| bool angle_p, location_t); |
| extern void _cpp_fake_include (cpp_reader *, const char *); |
| extern bool _cpp_stack_file (cpp_reader *, _cpp_file*, include_type, location_t); |
| extern bool _cpp_stack_include (cpp_reader *, const char *, int, |
| enum include_type, location_t); |
| extern int _cpp_compare_file_date (cpp_reader *, const char *, int); |
| extern void _cpp_report_missing_guards (cpp_reader *); |
| extern void _cpp_init_files (cpp_reader *); |
| extern void _cpp_cleanup_files (cpp_reader *); |
| extern void _cpp_pop_file_buffer (cpp_reader *, struct _cpp_file *, |
| const unsigned char *); |
| extern bool _cpp_save_file_entries (cpp_reader *pfile, FILE *f); |
| extern bool _cpp_read_file_entries (cpp_reader *, FILE *); |
| extern const char *_cpp_get_file_name (_cpp_file *); |
| extern struct stat *_cpp_get_file_stat (_cpp_file *); |
| extern bool _cpp_has_header (cpp_reader *, const char *, int, |
| enum include_type); |
| |
| /* In expr.cc */ |
| extern bool _cpp_parse_expr (cpp_reader *, bool); |
| extern struct op *_cpp_expand_op_stack (cpp_reader *); |
| |
| /* In lex.cc */ |
| extern void _cpp_process_line_notes (cpp_reader *, int); |
| extern void _cpp_clean_line (cpp_reader *); |
| extern bool _cpp_get_fresh_line (cpp_reader *); |
| extern bool _cpp_skip_block_comment (cpp_reader *); |
| extern cpp_token *_cpp_temp_token (cpp_reader *); |
| extern const cpp_token *_cpp_lex_token (cpp_reader *); |
| extern cpp_token *_cpp_lex_direct (cpp_reader *); |
| extern unsigned char *_cpp_spell_ident_ucns (unsigned char *, cpp_hashnode *); |
| extern int _cpp_equiv_tokens (const cpp_token *, const cpp_token *); |
| extern void _cpp_init_tokenrun (tokenrun *, unsigned int); |
| extern cpp_hashnode *_cpp_lex_identifier (cpp_reader *, const char *); |
| extern int _cpp_remaining_tokens_num_in_context (cpp_context *); |
| extern void _cpp_init_lexer (void); |
| static inline void *_cpp_reserve_room (cpp_reader *pfile, size_t have, |
| size_t extra) |
| { |
| if (BUFF_ROOM (pfile->a_buff) < (have + extra)) |
| _cpp_extend_buff (pfile, &pfile->a_buff, extra); |
| return BUFF_FRONT (pfile->a_buff); |
| } |
| extern void *_cpp_commit_buff (cpp_reader *pfile, size_t size); |
| |
| /* In init.cc. */ |
| extern void _cpp_maybe_push_include_file (cpp_reader *); |
| extern const char *cpp_named_operator2name (enum cpp_ttype type); |
| extern void _cpp_restore_special_builtin (cpp_reader *pfile, |
| struct def_pragma_macro *); |
| |
| /* In directives.cc */ |
| extern int _cpp_test_assertion (cpp_reader *, unsigned int *); |
| extern int _cpp_handle_directive (cpp_reader *, bool); |
| extern void _cpp_define_builtin (cpp_reader *, const char *); |
| extern char ** _cpp_save_pragma_names (cpp_reader *); |
| extern void _cpp_restore_pragma_names (cpp_reader *, char **); |
| extern int _cpp_do__Pragma (cpp_reader *, location_t); |
| extern void _cpp_init_directives (cpp_reader *); |
| extern void _cpp_init_internal_pragmas (cpp_reader *); |
| extern void _cpp_do_file_change (cpp_reader *, enum lc_reason, const char *, |
| linenum_type, unsigned int); |
| extern void _cpp_pop_buffer (cpp_reader *); |
| extern char *_cpp_bracket_include (cpp_reader *); |
| |
| /* In errors.cc */ |
| extern location_t cpp_diagnostic_get_current_location (cpp_reader *); |
| |
| /* In traditional.cc. */ |
| extern bool _cpp_scan_out_logical_line (cpp_reader *, cpp_macro *, bool); |
| extern bool _cpp_read_logical_line_trad (cpp_reader *); |
| extern void _cpp_overlay_buffer (cpp_reader *pfile, const unsigned char *, |
| size_t); |
| extern void _cpp_remove_overlay (cpp_reader *); |
| extern cpp_macro *_cpp_create_trad_definition (cpp_reader *); |
| extern bool _cpp_expansions_different_trad (const cpp_macro *, |
| const cpp_macro *); |
| extern unsigned char *_cpp_copy_replacement_text (const cpp_macro *, |
| unsigned char *); |
| extern size_t _cpp_replacement_text_len (const cpp_macro *); |
| |
| /* In charset.cc. */ |
| |
| /* The normalization state at this point in the sequence. |
| It starts initialized to all zeros, and at the end |
| 'level' is the normalization level of the sequence. */ |
| |
| struct normalize_state |
| { |
| /* The previous starter character. */ |
| cppchar_t previous; |
| /* The combining class of the previous character (whether or not a |
| starter). */ |
| unsigned char prev_class; |
| /* The lowest normalization level so far. */ |
| enum cpp_normalize_level level; |
| }; |
| #define INITIAL_NORMALIZE_STATE { 0, 0, normalized_KC } |
| #define NORMALIZE_STATE_RESULT(st) ((st)->level) |
| |
| /* We saw a character C that matches ISIDNUM(), update a |
| normalize_state appropriately. */ |
| #define NORMALIZE_STATE_UPDATE_IDNUM(st, c) \ |
| ((st)->previous = (c), (st)->prev_class = 0) |
| |
| extern bool _cpp_valid_ucn (cpp_reader *, const unsigned char **, |
| const unsigned char *, int, |
| struct normalize_state *state, |
| cppchar_t *, |
| source_range *char_range, |
| cpp_string_location_reader *loc_reader); |
| |
| extern bool _cpp_valid_utf8 (cpp_reader *pfile, |
| const uchar **pstr, |
| const uchar *limit, |
| int identifier_pos, |
| struct normalize_state *nst, |
| cppchar_t *cp); |
| |
| extern void _cpp_destroy_iconv (cpp_reader *); |
| extern unsigned char *_cpp_convert_input (cpp_reader *, const char *, |
| unsigned char *, size_t, size_t, |
| const unsigned char **, off_t *); |
| extern const char *_cpp_default_encoding (void); |
| extern cpp_hashnode * _cpp_interpret_identifier (cpp_reader *pfile, |
| const unsigned char *id, |
| size_t len); |
| |
| /* Utility routines and macros. */ |
| #define DSC(str) (const unsigned char *)str, sizeof str - 1 |
| |
| /* These are inline functions instead of macros so we can get type |
| checking. */ |
| static inline int ustrcmp (const unsigned char *, const unsigned char *); |
| static inline int ustrncmp (const unsigned char *, const unsigned char *, |
| size_t); |
| static inline size_t ustrlen (const unsigned char *); |
| static inline const unsigned char *uxstrdup (const unsigned char *); |
| static inline const unsigned char *ustrchr (const unsigned char *, int); |
| static inline int ufputs (const unsigned char *, FILE *); |
| |
| /* Use a const char for the second parameter since it is usually a literal. */ |
| static inline int ustrcspn (const unsigned char *, const char *); |
| |
| static inline int |
| ustrcmp (const unsigned char *s1, const unsigned char *s2) |
| { |
| return strcmp ((const char *)s1, (const char *)s2); |
| } |
| |
| static inline int |
| ustrncmp (const unsigned char *s1, const unsigned char *s2, size_t n) |
| { |
| return strncmp ((const char *)s1, (const char *)s2, n); |
| } |
| |
| static inline int |
| ustrcspn (const unsigned char *s1, const char *s2) |
| { |
| return strcspn ((const char *)s1, s2); |
| } |
| |
| static inline size_t |
| ustrlen (const unsigned char *s1) |
| { |
| return strlen ((const char *)s1); |
| } |
| |
| static inline const unsigned char * |
| uxstrdup (const unsigned char *s1) |
| { |
| return (const unsigned char *) xstrdup ((const char *)s1); |
| } |
| |
| static inline const unsigned char * |
| ustrchr (const unsigned char *s1, int c) |
| { |
| return (const unsigned char *) strchr ((const char *)s1, c); |
| } |
| |
| static inline int |
| ufputs (const unsigned char *s, FILE *f) |
| { |
| return fputs ((const char *)s, f); |
| } |
| |
| /* In line-map.cc. */ |
| |
| /* Create and return a virtual location for a token that is part of a |
| macro expansion-list at a macro expansion point. See the comment |
| inside struct line_map_macro to see what an expansion-list exactly |
| is. |
| |
| A call to this function must come after a call to |
| linemap_enter_macro. |
| |
| MAP is the map into which the source location is created. TOKEN_NO |
| is the index of the token in the macro replacement-list, starting |
| at number 0. |
| |
| ORIG_LOC is the location of the token outside of this macro |
| expansion. If the token comes originally from the macro |
| definition, it is the locus in the macro definition; otherwise it |
| is a location in the context of the caller of this macro expansion |
| (which is a virtual location or a source location if the caller is |
| itself a macro expansion or not). |
| |
| MACRO_DEFINITION_LOC is the location in the macro definition, |
| either of the token itself or of a macro parameter that it |
| replaces. */ |
| location_t linemap_add_macro_token (const line_map_macro *, |
| unsigned int, |
| location_t, |
| location_t); |
| |
| /* Return the source line number corresponding to source location |
| LOCATION. SET is the line map set LOCATION comes from. If |
| LOCATION is the location of token that is part of the |
| expansion-list of a macro expansion return the line number of the |
| macro expansion point. */ |
| int linemap_get_expansion_line (class line_maps *, |
| location_t); |
| |
| /* Return the path of the file corresponding to source code location |
| LOCATION. |
| |
| If LOCATION is the location of a token that is part of the |
| replacement-list of a macro expansion return the file path of the |
| macro expansion point. |
| |
| SET is the line map set LOCATION comes from. */ |
| const char* linemap_get_expansion_filename (class line_maps *, |
| location_t); |
| |
| /* A subclass of rich_location for emitting a diagnostic |
| at the current location of the reader, but flagging |
| it with set_escape_on_output (true). */ |
| class encoding_rich_location : public rich_location |
| { |
| public: |
| encoding_rich_location (cpp_reader *pfile) |
| : rich_location (pfile->line_table, |
| cpp_diagnostic_get_current_location (pfile)) |
| { |
| set_escape_on_output (true); |
| } |
| |
| encoding_rich_location (cpp_reader *pfile, location_t loc) |
| : rich_location (pfile->line_table, loc) |
| { |
| set_escape_on_output (true); |
| } |
| }; |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif /* ! LIBCPP_INTERNAL_H */ |