/* Part of CPP library.
- Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002
+ Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003
Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify it
struct pending_option;
struct op;
+#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) == '-') && \
#define CPP_OPTION(PFILE, OPTION) ((PFILE)->opts.OPTION)
#define CPP_BUFFER(PFILE) ((PFILE)->buffer)
-#define CPP_BUF_COLUMN(BUF, CUR) ((CUR) - (BUF)->line_base + (BUF)->col_adjust)
+#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. */
+ unsigned int 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
#define BUFF_FRONT(BUFF) ((BUFF)->cur)
#define BUFF_LIMIT(BUFF) ((BUFF)->limit)
-/* List of directories to look for include files in. */
-struct search_path
-{
- struct search_path *next;
-
- /* NOTE: NAME may not be null terminated for the case of the current
- file's directory! */
- const char *name;
- unsigned int len;
- /* We use these to tell if the directory mentioned here is a duplicate
- of an earlier directory on the search path. */
- ino_t ino;
- dev_t dev;
- /* Non-zero if it is a system include directory. */
- int sysp;
- /* Mapping of file names for this directory. Only used on MS-DOS
- and related platforms. */
- struct file_name_map *name_map;
-};
-
/* #include types. */
enum include_type {IT_INCLUDE, IT_INCLUDE_NEXT, IT_IMPORT, IT_CMDLINE};
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;
- /* Contexts other than the base context are contiguous tokens.
- e.g. macro expansions, expanded argument tokens. */
- union utoken first;
- union utoken last;
+ 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. */
/* 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 we're mid-comment. */
- unsigned char lexing_comment;
-
/* Nonzero if lexing __VA_ARGS__ is valid. */
unsigned char va_args_ok;
unsigned char poisoned_ok;
/* Nonzero to prevent macro expansion. */
- unsigned char prevent_expansion;
+ unsigned char prevent_expansion;
/* Nonzero when parsing arguments to a function-like macro. */
unsigned char parsing_args;
cpp_hashnode *n_defined; /* defined operator */
cpp_hashnode *n_true; /* C++ keyword true */
cpp_hashnode *n_false; /* C++ keyword false */
- cpp_hashnode *n__STRICT_ANSI__; /* STDC_0_IN_SYSTEM_HEADERS */
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 unsigned char *cur; /* current position */
- const unsigned char *backup_to; /* if peeked character is not wanted */
- const unsigned char *rlimit; /* end of valid data */
- const unsigned char *line_base; /* start of current line */
+ 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;
- const unsigned char *buf; /* Entire character buffer. */
-
/* Pointer into the include table; non-NULL if this is a file
buffer. Used for include_next and to record control macros. */
struct include_file *inc;
Used to prohibit unmatched #endif (etc) in an include file. */
struct if_stack *if_stack;
- /* Token column position adjustment owing to tabs in whitespace. */
- unsigned int col_adjust;
-
- /* Contains PREV_WHITE and/or AVOID_LPASTE. */
- unsigned char saved_flags;
-
- /* Because of the way the lexer works, -Wtrigraphs can sometimes
- warn twice for the same trigraph. This helps prevent that. */
- const unsigned char *last_Wtrigraphs;
+ /* 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,
/* 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 search_path dir;
+ struct cpp_path 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.
/* 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;
/* If in_directive, the directive if known. */
const struct directive *directive;
- /* The next -include-d file; NULL if they all are done. If it
- points to NULL, the last one is in progress, and
- _cpp_maybe_push_include_file has yet to restore the line map. */
- struct pending_option **next_include_file;
+ /* Search paths for include files. */
+ struct cpp_path *quote_include; /* "" */
+ struct cpp_path *bracket_include; /* <> */
- /* Multiple inlcude optimisation. */
+ /* Multiple include optimisation. */
const cpp_hashnode *mi_cmacro;
const cpp_hashnode *mi_ind_cmacro;
bool mi_valid;
tokenrun base_run, *cur_run;
unsigned int lookaheads;
- /* Non-zero prevents the lexer from re-using the token runs. */
+ /* Nonzero prevents the lexer from re-using the token runs. */
unsigned int keep_tokens;
/* Error counter for exit code. */
for include files. (Altered as we get more of them.) */
unsigned int max_include_len;
- /* Date and time tokens. Calculated together if either is requested. */
- cpp_token date;
- cpp_token time;
+ /* 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. Used by -M etc. */
+ /* True if we have already warned about dollars in identifiers or
+ numbers for this buffer. */
+ bool warned_dollar;
+
+ /* Opaque handle to the dependencies of mkdeps.c. */
struct deps *deps;
/* Obstack holding all macro hash nodes. This never shrinks.
/* Call backs. */
struct cpp_callbacks cb;
- /* Identifier hash table. */
+ /* Identifier hash table. */
struct ht *hash_table;
/* Expression parser stack. */
preprocessor. */
struct spec_nodes spec_nodes;
- /* Whether to print our version number. Done this way so
- we don't get it twice for -v -version. */
- unsigned char print_version;
+ /* Nonzero means don't look for #include "foo" the source-file
+ directory. */
+ unsigned char quote_ignores_source_dir;
/* Whether cpplib owns the hashtable. */
unsigned char our_hashtable;
+
+ /* Traditional preprocessing output buffer (a logical line). */
+ struct
+ {
+ uchar *base;
+ uchar *limit;
+ uchar *cur;
+ unsigned int 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.
/* Macros. */
-#define CPP_PRINT_DEPS(PFILE) CPP_OPTION (PFILE, print_deps)
#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 cppmacro.c */
extern void _cpp_free_definition PARAMS ((cpp_hashnode *));
-extern int _cpp_create_definition PARAMS ((cpp_reader *, cpp_hashnode *));
+extern bool _cpp_create_definition PARAMS ((cpp_reader *, cpp_hashnode *));
extern void _cpp_pop_context PARAMS ((cpp_reader *));
-
+extern void _cpp_push_text_context PARAMS ((cpp_reader *, cpp_hashnode *,
+ const uchar *, size_t));
+extern bool _cpp_save_parameter PARAMS ((cpp_reader *, cpp_macro *,
+ cpp_hashnode *));
+extern bool _cpp_arguments_ok PARAMS ((cpp_reader *, cpp_macro *,
+ const cpp_hashnode *,
+ unsigned int));
+extern const uchar *_cpp_builtin_macro_text PARAMS ((cpp_reader *,
+ cpp_hashnode *));
+int _cpp_warn_if_unused_macro PARAMS ((cpp_reader *, cpp_hashnode *,
+ void *));
/* In cpphash.c */
extern void _cpp_init_hashtable PARAMS ((cpp_reader *, hash_table *));
extern void _cpp_destroy_hashtable PARAMS ((cpp_reader *));
/* In cppfiles.c */
extern void _cpp_fake_include PARAMS ((cpp_reader *, const char *));
extern void _cpp_never_reread PARAMS ((struct include_file *));
-extern char *_cpp_simplify_pathname PARAMS ((char *));
extern bool _cpp_read_file PARAMS ((cpp_reader *, const char *));
-extern bool _cpp_execute_include PARAMS ((cpp_reader *,
- const cpp_token *,
- enum include_type));
-extern int _cpp_compare_file_date PARAMS ((cpp_reader *,
- const cpp_token *));
+extern bool _cpp_execute_include PARAMS ((cpp_reader *, const char *,
+ int, enum include_type));
+extern int _cpp_compare_file_date PARAMS ((cpp_reader *, const char *,
+ int));
extern void _cpp_report_missing_guards PARAMS ((cpp_reader *));
extern void _cpp_init_includes PARAMS ((cpp_reader *));
extern void _cpp_cleanup_includes PARAMS ((cpp_reader *));
extern struct op *_cpp_expand_op_stack PARAMS ((cpp_reader *));
/* In cpplex.c */
+extern void _cpp_process_line_notes PARAMS ((cpp_reader *, int));
+extern void _cpp_clean_line PARAMS ((cpp_reader *));
+extern bool _cpp_get_fresh_line PARAMS ((cpp_reader *));
+extern bool _cpp_skip_block_comment PARAMS ((cpp_reader *));
extern cpp_token *_cpp_temp_token PARAMS ((cpp_reader *));
extern const cpp_token *_cpp_lex_token PARAMS ((cpp_reader *));
extern cpp_token *_cpp_lex_direct PARAMS ((cpp_reader *));
extern void _cpp_maybe_push_include_file PARAMS ((cpp_reader *));
/* In cpplib.c */
-extern int _cpp_test_assertion PARAMS ((cpp_reader *, int *));
+extern int _cpp_test_assertion PARAMS ((cpp_reader *, unsigned int *));
extern int _cpp_handle_directive PARAMS ((cpp_reader *, int));
extern void _cpp_define_builtin PARAMS ((cpp_reader *, const char *));
+extern char ** _cpp_save_pragma_names PARAMS ((cpp_reader *));
+extern void _cpp_restore_pragma_names PARAMS ((cpp_reader *, char **));
extern void _cpp_do__Pragma PARAMS ((cpp_reader *));
extern void _cpp_init_directives PARAMS ((cpp_reader *));
extern void _cpp_init_internal_pragmas PARAMS ((cpp_reader *));
unsigned int, unsigned int));
extern void _cpp_pop_buffer PARAMS ((cpp_reader *));
+/* In cpptrad.c. */
+extern bool scan_out_logical_line PARAMS ((cpp_reader *, cpp_macro *));
+extern bool _cpp_read_logical_line_trad PARAMS ((cpp_reader *));
+extern void _cpp_overlay_buffer PARAMS ((cpp_reader *pfile, const uchar *,
+ size_t));
+extern void _cpp_remove_overlay PARAMS ((cpp_reader *));
+extern bool _cpp_create_trad_definition PARAMS ((cpp_reader *, cpp_macro *));
+extern bool _cpp_expansions_different_trad PARAMS ((const cpp_macro *,
+ const cpp_macro *));
+extern uchar *_cpp_copy_replacement_text PARAMS ((const cpp_macro *, uchar *));
+extern size_t _cpp_replacement_text_len PARAMS ((const cpp_macro *));
+
+/* In cppcharset.c. */
+cppchar_t _cpp_valid_ucn PARAMS ((cpp_reader *, const uchar **,
+ int identifer_p));
+
/* Utility routines and macros. */
#define DSC(str) (const uchar *)str, sizeof str - 1
#define xnew(T) (T *) xmalloc (sizeof(T))
/* These are inline functions instead of macros so we can get type
checking. */
-typedef unsigned char uchar;
-#define U (const uchar *) /* Intended use: U"string" */
-
static inline int ustrcmp PARAMS ((const uchar *, const uchar *));
static inline int ustrncmp PARAMS ((const uchar *, const uchar *,
size_t));
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