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Diffstat (limited to 'contrib/gcc/cpphash.h')
| -rw-r--r-- | contrib/gcc/cpphash.h | 639 |
1 files changed, 0 insertions, 639 deletions
diff --git a/contrib/gcc/cpphash.h b/contrib/gcc/cpphash.h deleted file mode 100644 index 8c814b9..0000000 --- a/contrib/gcc/cpphash.h +++ /dev/null @@ -1,639 +0,0 @@ -/* Part of CPP library. - Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004 - 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 2, 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; if not, write to the Free Software -Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ - -/* This header defines all the internal data structures and functions - that need to be visible across files. It's called cpphash.h for - historical reasons. */ - -#ifndef GCC_CPPHASH_H -#define GCC_CPPHASH_H - -#include "hashtable.h" - -#if defined HAVE_ICONV_H && defined HAVE_ICONV -#include <iconv.h> -#else -#define HAVE_ICONV 0 -typedef int iconv_t; /* dummy */ -#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; -}; - -#ifndef HAVE_UCHAR -typedef unsigned char uchar; -#endif -#define U (const uchar *) /* Intended use: U"string" */ - -#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 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) - -/* Maximum nesting of cpp_buffers. We use a static limit, partly for - efficiency, and partly to limit runaway recursion. */ -#define CPP_STACK_MAX 200 - -/* 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) - -/* Each macro definition is recorded in a cpp_macro structure. - Variadic macros cannot occur with traditional cpp. */ -struct cpp_macro -{ - /* Parameters, if any. */ - cpp_hashnode **params; - - /* Replacement tokens (ISO) or replacement text (traditional). See - comment at top of cpptrad.c for how traditional function-like - macros are encoded. */ - union - { - cpp_token *tokens; - const uchar *text; - } exp; - - /* Definition line number. */ - fileline line; - - /* Number of tokens in expansion, or bytes for traditional macros. */ - unsigned int count; - - /* Number of parameters. */ - unsigned short paramc; - - /* If a function-like macro. */ - unsigned int fun_like : 1; - - /* If a variadic macro. */ - unsigned int variadic : 1; - - /* 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; -}; - -#define _cpp_mark_macro_used(NODE) do { \ - if ((NODE)->type == NT_MACRO && !((NODE)->flags & NODE_BUILTIN)) \ - (NODE)->value.macro->used = 1; } while (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 {IT_INCLUDE, IT_INCLUDE_NEXT, IT_IMPORT, IT_CMDLINE}; - -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) - -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 uchar *cur; - const uchar *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; - - /* For a macro context, the macro node, otherwise NULL. */ - cpp_hashnode *macro; - - /* True if utoken element is token, else ptoken. */ - bool direct_p; -}; - -struct lexer_state -{ - /* Nonzero if first token on line is CPP_HASH. */ - 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__ is 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 to skip evaluating part of an expression. */ - unsigned int skip_eval; -}; - -/* 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 */ -}; - -typedef struct _cpp_line_note _cpp_line_note; -struct _cpp_line_note -{ - /* Location in the clean line the note refers to. */ - const uchar *pos; - - /* Type of note. The 9 'from' trigraph characters represent those - trigraphs, '\\' an escaped newline, ' ' an escaped newline with - intervening space, and anything else is invalid. */ - unsigned int type; -}; - -/* Represents the contents of a file cpplib has read in. */ -struct cpp_buffer -{ - const uchar *cur; /* Current location. */ - const uchar *line_base; /* Start of current physical line. */ - const uchar *next_line; /* Start of to-be-cleaned logical line. */ - - const uchar *buf; /* Entire character buffer. */ - const uchar *rlimit; /* Writable byte at end of file. */ - - _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; - - /* 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; - - /* 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). */ - unsigned char warned_cplusplus_comments; - - /* True if we don't process trigraphs and escaped newlines. True - for preprocessed input, command line directives, and _Pragma - buffers. */ - unsigned char from_stage3; - - /* 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. */ - unsigned int return_at_eof : 1; - - /* 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; - - /* Used for buffer overlays by cpptrad.c. */ - const uchar *saved_cur, *saved_rlimit; -}; - -/* 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. */ - struct line_maps line_maps; - const struct line_map *map; - fileline line; - - /* The line of the '#' of the current directive. */ - fileline 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; - - /* 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 *file_hash_entries; - unsigned int file_hash_entries_allocated, file_hash_entries_used; - - /* 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; - - /* Error counter for exit code. */ - unsigned int errors; - - /* 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 - wide execution character set. */ - struct cset_converter wide_cset_desc; - - /* Date and time text. Calculated together if either is requested. */ - const uchar *date; - const uchar *time; - - /* EOF token, and a token forcing paste avoidance. */ - cpp_token avoid_paste; - cpp_token eof; - - /* Opaque handle to the dependencies of mkdeps.c. */ - struct deps *deps; - - /* Obstack holding all macro hash nodes. This never shrinks. - See cpphash.c */ - struct obstack hash_ob; - - /* Obstack holding buffer and conditional structures. This is a - real stack. See cpplib.c. */ - 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 - { - uchar *base; - uchar *limit; - uchar *cur; - fileline first_line; - } out; - - /* Used to save the original line number during traditional - preprocessing. */ - unsigned int saved_line; - - /* A saved list of the defined macros, for dependency checking - of precompiled headers. */ - struct cpp_savedstate *savedstate; -}; - -/* 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 cpplex.c 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) - -/* 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 - -/* Macros. */ - -#define CPP_IN_SYSTEM_HEADER(PFILE) ((PFILE)->map && (PFILE)->map->sysp) -#define CPP_PEDANTIC(PF) CPP_OPTION (PF, pedantic) -#define CPP_WTRADITIONAL(PF) CPP_OPTION (PF, warn_traditional) - -/* In cpperror.c */ -extern int _cpp_begin_message (cpp_reader *, int, fileline, unsigned int); - -/* In cppmacro.c */ -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 uchar *, size_t); -extern bool _cpp_save_parameter (cpp_reader *, cpp_macro *, cpp_hashnode *); -extern bool _cpp_arguments_ok (cpp_reader *, cpp_macro *, const cpp_hashnode *, - unsigned int); -extern const uchar *_cpp_builtin_macro_text (cpp_reader *, cpp_hashnode *); -int _cpp_warn_if_unused_macro (cpp_reader *, cpp_hashnode *, void *); -/* In cpphash.c */ -extern void _cpp_init_hashtable (cpp_reader *, hash_table *); -extern void _cpp_destroy_hashtable (cpp_reader *); - -/* In cppfiles.c */ -typedef struct _cpp_file _cpp_file; -extern _cpp_file *_cpp_find_file (cpp_reader *, const char *fname, - cpp_dir *start_dir, bool fake, int); -extern bool _cpp_find_failed (_cpp_file *); -extern void _cpp_mark_file_once_only (cpp_reader *, struct _cpp_file *); -extern void _cpp_fake_include (cpp_reader *, const char *); -extern bool _cpp_stack_file (cpp_reader *, _cpp_file*, bool); -extern bool _cpp_stack_include (cpp_reader *, const char *, int, - enum include_type); -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 *); - -/* In cppexp.c */ -extern bool _cpp_parse_expr (cpp_reader *); -extern struct op *_cpp_expand_op_stack (cpp_reader *); - -/* In cpplex.c */ -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 int _cpp_equiv_tokens (const cpp_token *, const cpp_token *); -extern void _cpp_init_tokenrun (tokenrun *, unsigned int); - -/* In cppinit.c. */ -extern void _cpp_maybe_push_include_file (cpp_reader *); - -/* In cpplib.c */ -extern int _cpp_test_assertion (cpp_reader *, unsigned int *); -extern int _cpp_handle_directive (cpp_reader *, int); -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 void _cpp_do__Pragma (cpp_reader *); -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 *, - unsigned int, unsigned int); -extern void _cpp_pop_buffer (cpp_reader *); - -/* In cpptrad.c. */ -extern bool _cpp_scan_out_logical_line (cpp_reader *, cpp_macro *); -extern bool _cpp_read_logical_line_trad (cpp_reader *); -extern void _cpp_overlay_buffer (cpp_reader *pfile, const uchar *, size_t); -extern void _cpp_remove_overlay (cpp_reader *); -extern bool _cpp_create_trad_definition (cpp_reader *, cpp_macro *); -extern bool _cpp_expansions_different_trad (const cpp_macro *, - const cpp_macro *); -extern uchar *_cpp_copy_replacement_text (const cpp_macro *, uchar *); -extern size_t _cpp_replacement_text_len (const cpp_macro *); - -/* In cppcharset.c. */ -extern cppchar_t _cpp_valid_ucn (cpp_reader *, const uchar **, - const uchar *, int); -extern void _cpp_destroy_iconv (cpp_reader *); -extern bool _cpp_interpret_string_notranslate (cpp_reader *, - const cpp_string *, - cpp_string *); -extern uchar *_cpp_convert_input (cpp_reader *, const char *, uchar *, - size_t, size_t, off_t *); -extern const char *_cpp_default_encoding (void); - - -/* Utility routines and macros. */ -#define DSC(str) (const uchar *)str, sizeof str - 1 -#define xnew(T) (T *) xmalloc (sizeof(T)) -#define xcnew(T) (T *) xcalloc (1, sizeof(T)) -#define xnewvec(T, N) (T *) xmalloc (sizeof(T) * (N)) -#define xcnewvec(T, N) (T *) xcalloc (N, sizeof(T)) -#define xobnew(O, T) (T *) obstack_alloc (O, sizeof(T)) - -/* These are inline functions instead of macros so we can get type - checking. */ -static inline int ustrcmp (const uchar *, const uchar *); -static inline int ustrncmp (const uchar *, const uchar *, size_t); -static inline size_t ustrlen (const uchar *); -static inline uchar *uxstrdup (const uchar *); -static inline uchar *ustrchr (const uchar *, int); -static inline int ufputs (const uchar *, FILE *); - -static inline int -ustrcmp (const uchar *s1, const uchar *s2) -{ - return strcmp ((const char *)s1, (const char *)s2); -} - -static inline int -ustrncmp (const uchar *s1, const uchar *s2, size_t n) -{ - return strncmp ((const char *)s1, (const char *)s2, n); -} - -static inline size_t -ustrlen (const uchar *s1) -{ - return strlen ((const char *)s1); -} - -static inline uchar * -uxstrdup (const uchar *s1) -{ - return (uchar *) xstrdup ((const char *)s1); -} - -static inline uchar * -ustrchr (const uchar *s1, int c) -{ - return (uchar *) strchr ((const char *)s1, c); -} - -static inline int -ufputs (const uchar *s, FILE *f) -{ - return fputs ((const char *)s, f); -} - -#endif /* ! GCC_CPPHASH_H */ |
