/* Definitions for CPP library.
- Copyright (C) 1995, 96-99, 2000 Free Software Foundation, Inc.
+ Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001
+ Free Software Foundation, Inc.
Written by Per Bothner, 1994-95.
This program is free software; you can redistribute it and/or modify it
In other words, you are welcome to use, share and improve this program.
You are forbidden to forbid anyone else to use, share and improve
what you give them. Help stamp out software-hoarding! */
-#ifndef __GCC_CPPLIB__
-#define __GCC_CPPLIB__
+#ifndef GCC_CPPLIB_H
+#define GCC_CPPLIB_H
#include <sys/types.h>
+#include "hashtable.h"
+#include "line-map.h"
#ifdef __cplusplus
extern "C" {
#endif
+/* For complex reasons, cpp_reader is also typedefed in c-pragma.h. */
+#ifndef GCC_C_PRAGMA_H
typedef struct cpp_reader cpp_reader;
+#endif
typedef struct cpp_buffer cpp_buffer;
typedef struct cpp_options cpp_options;
-typedef struct cpp_printer cpp_printer;
typedef struct cpp_token cpp_token;
-typedef struct cpp_toklist cpp_toklist;
-typedef struct cpp_name cpp_name;
+typedef struct cpp_string cpp_string;
typedef struct cpp_hashnode cpp_hashnode;
+typedef struct cpp_macro cpp_macro;
+typedef struct cpp_callbacks cpp_callbacks;
+
+struct answer;
+struct file_name_map_list;
/* The first two groups, apart from '=', can appear in preprocessor
expressions. This allows a lookup table to be implemented in
the same order as their counterparts without the '=', like ">>". */
/* Positions in the table. */
-#define CPP_LAST_EQ CPP_LSHIFT
+#define CPP_LAST_EQ CPP_MAX
#define CPP_FIRST_DIGRAPH CPP_HASH
+#define CPP_LAST_PUNCTUATOR CPP_DOT_STAR
#define TTYPE_TABLE \
- T(CPP_EQ = 0, "=") \
- T(CPP_NOT, "!") \
- T(CPP_GREATER, ">") /* compare */ \
- T(CPP_LESS, "<") \
- T(CPP_PLUS, "+") /* math */ \
- T(CPP_MINUS, "-") \
- T(CPP_MULT, "*") \
- T(CPP_DIV, "/") \
- T(CPP_MOD, "%") \
- T(CPP_AND, "&") /* bit ops */ \
- T(CPP_OR, "|") \
- T(CPP_XOR, "^") \
- T(CPP_RSHIFT, ">>") \
- T(CPP_LSHIFT, "<<") \
+ OP(CPP_EQ = 0, "=") \
+ OP(CPP_NOT, "!") \
+ OP(CPP_GREATER, ">") /* compare */ \
+ OP(CPP_LESS, "<") \
+ OP(CPP_PLUS, "+") /* math */ \
+ OP(CPP_MINUS, "-") \
+ OP(CPP_MULT, "*") \
+ OP(CPP_DIV, "/") \
+ OP(CPP_MOD, "%") \
+ OP(CPP_AND, "&") /* bit ops */ \
+ OP(CPP_OR, "|") \
+ OP(CPP_XOR, "^") \
+ OP(CPP_RSHIFT, ">>") \
+ OP(CPP_LSHIFT, "<<") \
+ OP(CPP_MIN, "<?") /* extension */ \
+ OP(CPP_MAX, ">?") \
\
- T(CPP_COMPL, "~") \
- T(CPP_AND_AND, "&&") /* logical */ \
- T(CPP_OR_OR, "||") \
- T(CPP_QUERY, "?") \
- T(CPP_COLON, ":") \
- T(CPP_COMMA, ",") /* grouping */ \
- T(CPP_OPEN_PAREN, "(") \
- T(CPP_CLOSE_PAREN, ")") \
- T(CPP_EQ_EQ, "==") /* compare */ \
- T(CPP_NOT_EQ, "!=") \
- T(CPP_GREATER_EQ, ">=") \
- T(CPP_LESS_EQ, "<=") \
+ OP(CPP_COMPL, "~") \
+ OP(CPP_AND_AND, "&&") /* logical */ \
+ OP(CPP_OR_OR, "||") \
+ OP(CPP_QUERY, "?") \
+ OP(CPP_COLON, ":") \
+ OP(CPP_COMMA, ",") /* grouping */ \
+ OP(CPP_OPEN_PAREN, "(") \
+ OP(CPP_CLOSE_PAREN, ")") \
+ OP(CPP_EQ_EQ, "==") /* compare */ \
+ OP(CPP_NOT_EQ, "!=") \
+ OP(CPP_GREATER_EQ, ">=") \
+ OP(CPP_LESS_EQ, "<=") \
\
- T(CPP_PLUS_EQ, "+=") /* math */ \
- T(CPP_MINUS_EQ, "-=") \
- T(CPP_MULT_EQ, "*=") \
- T(CPP_DIV_EQ, "/=") \
- T(CPP_MOD_EQ, "%=") \
- T(CPP_AND_EQ, "&=") /* bit ops */ \
- T(CPP_OR_EQ, "|=") \
- T(CPP_XOR_EQ, "^=") \
- T(CPP_RSHIFT_EQ, ">>=") \
- T(CPP_LSHIFT_EQ, "<<=") \
+ OP(CPP_PLUS_EQ, "+=") /* math */ \
+ OP(CPP_MINUS_EQ, "-=") \
+ OP(CPP_MULT_EQ, "*=") \
+ OP(CPP_DIV_EQ, "/=") \
+ OP(CPP_MOD_EQ, "%=") \
+ OP(CPP_AND_EQ, "&=") /* bit ops */ \
+ OP(CPP_OR_EQ, "|=") \
+ OP(CPP_XOR_EQ, "^=") \
+ OP(CPP_RSHIFT_EQ, ">>=") \
+ OP(CPP_LSHIFT_EQ, "<<=") \
+ OP(CPP_MIN_EQ, "<?=") /* extension */ \
+ OP(CPP_MAX_EQ, ">?=") \
/* Digraphs together, beginning with CPP_FIRST_DIGRAPH. */ \
- T(CPP_HASH, "#") /* digraphs */ \
- T(CPP_PASTE, "##") \
- T(CPP_OPEN_SQUARE, "[") \
- T(CPP_CLOSE_SQUARE, "]") \
- T(CPP_OPEN_BRACE, "{") \
- T(CPP_CLOSE_BRACE, "}") \
- /* The remainder of the punctuation. Order is not significant. */ \
- T(CPP_SEMICOLON, ";") /* structure */ \
- T(CPP_ELLIPSIS, "...") \
- T(CPP_BACKSLASH, "\\") \
- T(CPP_PLUS_PLUS, "++") /* increment */ \
- T(CPP_MINUS_MINUS, "--") \
- T(CPP_DEREF, "->") /* accessors */ \
- T(CPP_DOT, ".") \
- T(CPP_SCOPE, "::") \
- T(CPP_DEREF_STAR, "->*") \
- T(CPP_DOT_STAR, ".*") \
- T(CPP_MIN, "<?") /* extension */ \
- T(CPP_MAX, ">?") \
- C(CPP_OTHER, 0) /* stray punctuation */ \
+ OP(CPP_HASH, "#") /* digraphs */ \
+ OP(CPP_PASTE, "##") \
+ OP(CPP_OPEN_SQUARE, "[") \
+ OP(CPP_CLOSE_SQUARE, "]") \
+ OP(CPP_OPEN_BRACE, "{") \
+ OP(CPP_CLOSE_BRACE, "}") \
+ /* The remainder of the punctuation. Order is not significant. */ \
+ OP(CPP_SEMICOLON, ";") /* structure */ \
+ OP(CPP_ELLIPSIS, "...") \
+ OP(CPP_PLUS_PLUS, "++") /* increment */ \
+ OP(CPP_MINUS_MINUS, "--") \
+ OP(CPP_DEREF, "->") /* accessors */ \
+ OP(CPP_DOT, ".") \
+ OP(CPP_SCOPE, "::") \
+ OP(CPP_DEREF_STAR, "->*") \
+ OP(CPP_DOT_STAR, ".*") \
+ OP(CPP_ATSIGN, "@") /* used in Objective C */ \
\
- I(CPP_NAME, 0) /* word */ \
- I(CPP_INT, 0) /* 23 */ \
- I(CPP_FLOAT, 0) /* 3.14159 */ \
- I(CPP_NUMBER, 0) /* 34_be+ta */ \
- S(CPP_CHAR, 0) /* 'char' */ \
- S(CPP_WCHAR, 0) /* L'char' */ \
- S(CPP_STRING, 0) /* "string" */ \
- S(CPP_WSTRING, 0) /* L"string" */ \
+ TK(CPP_NAME, SPELL_IDENT) /* word */ \
+ TK(CPP_NUMBER, SPELL_NUMBER) /* 34_be+ta */ \
\
- I(CPP_COMMENT, 0) /* Only if output comments. */ \
- N(CPP_MACRO_ARG, 0) /* Macro argument. */ \
- N(CPP_SUBLIST, 0) /* Sublist. */ \
- N(CPP_EOF, 0) /* End of file. */ \
- N(CPP_HEADER_NAME, 0) /* <stdio.h> in #include */ \
+ TK(CPP_CHAR, SPELL_STRING) /* 'char' */ \
+ TK(CPP_WCHAR, SPELL_STRING) /* L'char' */ \
+ TK(CPP_OTHER, SPELL_CHAR) /* stray punctuation */ \
\
- /* Obsolete - will be removed when no code uses them still. */ \
- T(CPP_VSPACE, "\n") /* End of line. */ \
- N(CPP_HSPACE, 0) /* Horizontal white space. */ \
- N(CPP_DIRECTIVE, 0) /* #define and the like */ \
- N(CPP_MACRO, 0) /* Like a NAME, but expanded. */
-
-#define T(e, s) e,
-#define I(e, s) e,
-#define S(e, s) e,
-#define C(e, s) e,
-#define N(e, s) e,
+ TK(CPP_STRING, SPELL_STRING) /* "string" */ \
+ TK(CPP_WSTRING, SPELL_STRING) /* L"string" */ \
+ TK(CPP_HEADER_NAME, SPELL_STRING) /* <stdio.h> in #include */ \
+\
+ TK(CPP_COMMENT, SPELL_NUMBER) /* Only if output comments. */ \
+ /* SPELL_NUMBER happens to DTRT. */ \
+ TK(CPP_MACRO_ARG, SPELL_NONE) /* Macro argument. */ \
+ TK(CPP_PADDING, SPELL_NONE) /* Whitespace for cpp0. */ \
+ TK(CPP_EOF, SPELL_NONE) /* End of line or file. */
+
+#define OP(e, s) e,
+#define TK(e, s) e,
enum cpp_ttype
{
TTYPE_TABLE
N_TTYPES
};
-#undef T
-#undef I
-#undef S
-#undef C
-#undef N
-
-/* Payload of a NAME, NUMBER, FLOAT, STRING, or COMMENT token. */
-struct cpp_name
+#undef OP
+#undef TK
+
+/* C language kind, used when calling cpp_reader_init. */
+enum c_lang {CLK_GNUC89 = 0, CLK_GNUC99, CLK_STDC89, CLK_STDC94, CLK_STDC99,
+ CLK_GNUCXX, CLK_CXX98, CLK_OBJC, CLK_OBJCXX, CLK_ASM};
+
+/* Payload of a NUMBER, FLOAT, STRING, or COMMENT token. */
+struct cpp_string
{
unsigned int len;
const unsigned char *text;
};
-/* Accessor macros for token lists - all expect you have a
- list and an index. */
-
-#define TOK_TYPE(l_, i_) ((l_)->tokens[i_].type)
-#define TOK_FLAGS(l_, i_) ((l_)->tokens[i_].flags)
-#define TOK_AUX(l_, i_) ((l_)->tokens[i_].aux)
-#define TOK_COL(l_, i_) ((l_)->tokens[i_].col)
-#define TOK_INT(l_, i_) ((l_)->tokens[i_].val.integer)
-#define TOK_NAME(l_, i_) ((l_)->tokens[i_].val.name.text)
-#define TOK_LEN(l_, i_) ((l_)->tokens[i_].val.name.len)
-
-#define TOK_PREV_WHITE(l_, i_) (TOK_FLAGS(l_, i_) & PREV_WHITESPACE)
-
/* Flags for the cpp_token structure. */
-#define PREV_WHITESPACE 1 /* If whitespace before this token. */
-#define BOL 2 /* Beginning of line. */
-#define DIGRAPH 4 /* If it was a digraph. */
-#define UNSIGNED_INT 8 /* If int preprocessing token unsigned. */
+#define PREV_WHITE (1 << 0) /* If whitespace before this token. */
+#define DIGRAPH (1 << 1) /* If it was a digraph. */
+#define STRINGIFY_ARG (1 << 2) /* If macro argument to be stringified. */
+#define PASTE_LEFT (1 << 3) /* If on LHS of a ## operator. */
+#define NAMED_OP (1 << 4) /* C++ named operators. */
+#define NO_EXPAND (1 << 5) /* Do not macro-expand this token. */
+#define BOL (1 << 6) /* Token at beginning of line. */
/* A preprocessing token. This has been carefully packed and should
- occupy 16 bytes on both 32- and 64-bit hosts. */
+ occupy 16 bytes on 32-bit hosts and 24 bytes on 64-bit hosts. */
struct cpp_token
{
- unsigned short col; /* starting column of this token */
- ENUM_BITFIELD(cpp_ttype) type : CHAR_BIT; /* node type */
- unsigned char flags; /* flags - see above */
- unsigned int aux; /* CPP_OTHER character. Hash of a
- NAME, or something - see uses
- in the code */
+ unsigned int line; /* Logical line of first char of token. */
+ unsigned short col; /* Column of first char of token. */
+ ENUM_BITFIELD(cpp_ttype) type : CHAR_BIT; /* token type */
+ unsigned char flags; /* flags - see above */
+
union
{
- struct cpp_name name; /* a string */
- HOST_WIDEST_INT integer; /* an integer */
+ cpp_hashnode *node; /* An identifier. */
+ const cpp_token *source; /* Inherit padding from this token. */
+ struct cpp_string str; /* A string, or number. */
+ unsigned int arg_no; /* Argument no. for a CPP_MACRO_ARG. */
+ unsigned char c; /* Character represented by CPP_OTHER. */
} val;
};
-/* General flags. */
-#define LIST_OFFSET (1 << 0)
-
-/* Directive flags. */
-#define SYNTAX_INCLUDE (1 << 8)
-
-typedef int (*directive_handler) PARAMS ((cpp_reader *));
-
-struct cpp_toklist
-{
- cpp_token *tokens; /* actual tokens as an array */
- unsigned int tokens_used; /* tokens used */
- unsigned int tokens_cap; /* tokens allocated */
-
- unsigned char *namebuf; /* names buffer */
- unsigned int name_used; /* _bytes_ used */
- unsigned int name_cap; /* _bytes_ allocated */
-
- unsigned int line; /* starting line number */
-
- /* The handler to call after lexing the rest of this line.
- -1 for none */
- short dirno;
-
- /* Per-list flags, see above */
- unsigned short flags;
-};
-
-struct cpp_buffer
-{
- const unsigned char *cur; /* current position */
- const unsigned char *rlimit; /* end of valid data */
- const unsigned char *buf; /* entire buffer */
- const unsigned char *line_base; /* start of current line */
- const unsigned char *mark; /* Saved position for lengthy backtrack. */
-
- struct cpp_buffer *prev;
-
- /* Filename specified with #line command. */
- const char *nominal_fname;
- /* Actual directory of this file, used only for "" includes */
- struct file_name_list *actual_dir;
-
- /* Pointer into the include hash table. Used for include_next and
- to record control macros. */
- struct ihash *ihash;
-
- /* If the buffer is the expansion of a macro, this points to the
- macro's hash table entry. */
- struct cpp_hashnode *macro;
-
- /* Value of if_stack at start of this file.
- Used to prohibit unmatched #endif (etc) in an include file. */
- struct if_stack *if_stack;
-
- /* Line number at line_base (above). */
- unsigned int lineno;
-
- /* True if this is a header file included using <FILENAME>. */
- char system_header_p;
-
- /* True if buffer contains escape sequences.
- Currently there are two kinds:
- "\r-" means following identifier should not be macro-expanded.
- "\r " means a token-separator. This turns into " " in final output
- if not stringizing and needed to separate tokens; otherwise nothing.
- Any other two-character sequence beginning with \r is an error.
-
- If this is NOT set, then \r is a one-character escape meaning backslash
- newline. This is guaranteed not to occur in the middle of a token.
- The two interpretations of \r do not conflict, because the two-character
- escapes are used only in macro buffers, and backslash-newline is removed
- from macro expansion text in collect_expansion and/or macarg. */
- char has_escapes;
-
- /* 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). */
- char warned_cplusplus_comments;
-
- /* In a file buffer, true if this buffer's data is mmapped
- (currently never the case). In a macro buffer, true if this
- buffer's data must be freed. */
- char mapped;
-};
-
-struct file_name_map_list;
-struct htab;
-
-/* Maximum nesting of cpp_buffers. We use a static limit, partly for
- efficiency, and partly to limit runaway recursion. */
-#define CPP_STACK_MAX 200
+/* A standalone character. We may want to make it unsigned for the
+ same reason we use unsigned char - to avoid signedness issues. */
+typedef int cppchar_t;
/* Values for opts.dump_macros.
dump_only means inhibit output of the preprocessed text
/* Characters between tab stops. */
unsigned int tabstop;
- /* Pending options - -D, -U, -A, -I, -ixxx. */
+ /* Pending options - -D, -U, -A, -I, -ixxx. */
struct cpp_pending *pending;
/* File name which deps are being written to. This is 0 if deps are
being written to stdout. */
const char *deps_file;
- /* Target-name to write with the dependency information. */
- char *deps_target;
-
/* Search paths for include files. */
- struct file_name_list *quote_include; /* First dir to search for "file" */
- struct file_name_list *bracket_include;/* First dir to search for <file> */
+ struct search_path *quote_include; /* "" */
+ struct search_path *bracket_include; /* <> */
/* Map between header names and file names, used only on DOS where
file names are limited in length. */
const char *include_prefix;
unsigned int include_prefix_len;
+ /* -fleading_underscore sets this to "_". */
+ const char *user_label_prefix;
+
+ /* The language we're preprocessing. */
+ enum c_lang lang;
+
/* Non-0 means -v, so print the full set of include dirs. */
unsigned char verbose;
/* Nonzero means handle #import, for objective C. */
unsigned char objc;
- /* Nonzero means this is an assembly file, so ignore unrecognized
- directives and the "# 33" form of #line, both of which are
- probably comments. Also, permit unbalanced ' strings (again,
- likely to be in comments). */
- unsigned char lang_asm;
-
- /* Nonzero means this is Fortran, and we don't know where the
- comments are, so permit unbalanced ' strings. Unlike lang_asm,
- this does not ignore unrecognized directives. */
- unsigned char lang_fortran;
-
- /* Nonzero means handle CHILL comment syntax and output CHILL string
- delimiters for __DATE__ etc. */
- unsigned char chill;
-
/* Nonzero means don't copy comments into the output file. */
unsigned char discard_comments;
- /* Nonzero means process the ANSI trigraph sequences. */
+ /* Nonzero means process the ISO trigraph sequences. */
unsigned char trigraphs;
+ /* Nonzero means process the ISO digraph sequences. */
+ unsigned char digraphs;
+
+ /* Nonzero means to allow hexadecimal floats and LL suffixes. */
+ unsigned char extended_numbers;
+
/* Nonzero means print the names of included files rather than the
preprocessed output. 1 means just the #include "...", 2 means
#include <...> as well. */
unsigned char print_deps;
+ /* Nonzero if phony targets are created for each header. */
+ unsigned char deps_phony_targets;
+
/* Nonzero if missing .h files in -M output are assumed to be
generated files and not errors. */
unsigned char print_deps_missing_files;
- /* If true, fopen (deps_file, "a") else fopen (deps_file, "w"). */
+ /* If true, fopen (deps_file, "a") else fopen (deps_file, "w"). */
unsigned char print_deps_append;
/* Nonzero means print names of header files (-H). */
/* Nonzero means don't print warning messages. */
unsigned char inhibit_warnings;
+ /* Nonzero means don't suppress warnings from system headers. */
+ unsigned char warn_system_headers;
+
/* Nonzero means don't print error messages. Has no option to
select it, but can be set by a user of cpplib (e.g. fix-header). */
unsigned char inhibit_errors;
/* Nonzero means warn if #import is used. */
unsigned char warn_import;
- /* Nonzero means warn if a macro argument is (or would be)
- stringified with -traditional, and warn about directives
- with the # indented from the beginning of the line. */
+ /* Nonzero means warn about various incompatibilities with
+ traditional C. */
unsigned char warn_traditional;
/* Nonzero means turn warnings into errors. */
the source-file directory. */
unsigned char ignore_srcdir;
- /* Zero means dollar signs are punctuation. */
+ /* Zero means dollar signs are punctuation. */
unsigned char dollars_in_ident;
- /* Nonzero means try to imitate old fashioned non-ANSI preprocessor. */
- unsigned char traditional;
-
/* Nonzero means warn if undefined identifiers are evaluated in an #if. */
unsigned char warn_undef;
- /* Nonzero for the 1989 C Standard, including corrigenda and amendments. */
- unsigned char c89;
-
/* Nonzero for the 1999 C Standard, including corrigenda and amendments. */
unsigned char c99;
/* Nonzero means dump macros in some fashion - see above. */
unsigned char dump_macros;
- /* Nonzero means pass all #define and #undef directives which we
- actually process through to the output stream. This feature is
- used primarily to allow cc1 to record the #defines and #undefs
- for the sake of debuggers which understand about preprocessor
- macros, but it may also be useful with -E to figure out how
- symbols are defined, and where they are defined. */
- unsigned char debug_output;
-
/* Nonzero means pass #include lines through to the output. */
unsigned char dump_includes;
/* Print column number in error messages. */
unsigned char show_column;
-};
-
-
-/* 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;
- /* Token list used by get_directive_token. */
- cpp_toklist directbuf;
+ /* Nonzero means handle C++ alternate operator names. */
+ unsigned char operator_names;
- /* A buffer used for both for cpp_get_token's output, and also internally. */
- unsigned char *token_buffer;
- /* Allocated size of token_buffer. CPP_RESERVE allocates space. */
- unsigned int token_buffer_size;
- /* End of the written part of token_buffer. */
- unsigned char *limit;
-
- /* Error counter for exit code */
- unsigned int errors;
-
- /* Line where a newline was first seen in a string constant. */
- unsigned int multiline_string_line;
-
- /* Current depth in #include directives that use <...>. */
- unsigned int system_include_depth;
-
- /* Current depth of buffer stack. */
- unsigned int buffer_stack_depth;
-
- /* Hash table of macros and assertions. See cpphash.c */
- struct htab *hashtab;
-
- /* Hash table of other included files. See cppfiles.c */
- struct htab *all_include_files;
-
- /* Chain of `actual directory' file_name_list entries,
- for "" inclusion. */
- struct file_name_list *actual_dirs;
-
- /* Current maximum length of directory names in the search path
- for include files. (Altered as we get more of them.) */
- unsigned int max_include_len;
-
- const cpp_hashnode *potential_control_macro;
-
- /* Token column position adjustment owing to tabs in whitespace. */
- unsigned int col_adjust;
-
- /* Buffer of -M output. */
- struct deps *deps;
-
- /* A buffer used only by read_and_prescan (in cppfiles.c), which is
- allocated once per cpp_reader object to keep it off the stack. */
- unsigned char *input_buffer;
- size_t input_buffer_len;
-
- /* User visible options. */
- struct cpp_options opts;
-
- /* Nonzero means we have printed (while error reporting) a list of
- containing files that matches the current status. */
- unsigned char input_stack_listing_current;
-
- /* If non-zero, macros are not expanded. */
- unsigned char no_macro_expand;
-
- /* If non-zero, directives cause a hard error. Used when parsing
- macro arguments. */
- unsigned char no_directives;
-
- /* We're printed a warning recommending against using #import. */
- unsigned char import_warning;
-
- /* If true, characters between '<' and '>' are a single (string) token. */
- unsigned char parsing_include_directive;
-
- /* True if escape sequences (as described for has_escapes in
- parse_buffer) should be emitted. */
- unsigned char output_escapes;
-
- /* 0: Have seen non-white-space on this line.
- 1: Only seen white space so far on this line.
- 2: Only seen white space so far in this file. */
- unsigned char only_seen_white;
-
- /* True after cpp_start_read completes. Used to inhibit some
- warnings while parsing the command line. */
- unsigned char done_initializing;
-
- /* True if we are skipping a failed conditional group. */
- unsigned char skipping;
+ /* True if --help, --version or --target-help appeared in the
+ options. Stand-alone CPP should then bail out after option
+ parsing; drivers might want to continue printing help. */
+ unsigned char help_only;
};
-/* struct cpp_printer encapsulates state used to convert the stream of
- tokens coming from cpp_get_token back into a text file. Not
- everyone wants to do that, hence we separate the function. */
-
-struct cpp_printer
+/* Call backs. */
+struct cpp_callbacks
{
- FILE *outf; /* stream to write to */
- const char *last_fname; /* previous file name */
- unsigned int last_bsd; /* did we just push? */
- unsigned int lineno; /* line currently being written */
- unsigned int written; /* low water mark in token buffer */
+ /* Called when a new line of preprocessed output is started. */
+ void (*line_change) PARAMS ((cpp_reader *, const cpp_token *, int));
+ void (*file_change) PARAMS ((cpp_reader *, const struct line_map *));
+ void (*include) PARAMS ((cpp_reader *, unsigned int,
+ const unsigned char *, const cpp_token *));
+ void (*define) PARAMS ((cpp_reader *, unsigned int, cpp_hashnode *));
+ void (*undef) PARAMS ((cpp_reader *, unsigned int, cpp_hashnode *));
+ void (*ident) PARAMS ((cpp_reader *, unsigned int, const cpp_string *));
+ void (*def_pragma) PARAMS ((cpp_reader *, unsigned int));
};
#define CPP_FATAL_LIMIT 1000
-/* True if we have seen a "fatal" error. */
-#define CPP_FATAL_ERRORS(READER) ((READER)->errors >= CPP_FATAL_LIMIT)
-
-/* Macros for manipulating the token_buffer. */
-
-/* Number of characters currently in PFILE's output buffer. */
-#define CPP_WRITTEN(PFILE) ((size_t)((PFILE)->limit - (PFILE)->token_buffer))
-#define CPP_PWRITTEN(PFILE) ((PFILE)->limit)
-#define CPP_ADJUST_WRITTEN(PFILE,DELTA) ((PFILE)->limit += (DELTA))
-#define CPP_SET_WRITTEN(PFILE,N) ((PFILE)->limit = (PFILE)->token_buffer + (N))
-
-#define CPP_OPTION(PFILE, OPTION) ((PFILE)->opts.OPTION)
-#define CPP_BUFFER(PFILE) ((PFILE)->buffer)
-#define CPP_BUF_LINE(BUF) ((BUF)->lineno)
-#define CPP_BUF_COLUMN(BUF, CUR) ((CUR) - (BUF)->line_base + pfile->col_adjust)
-#define CPP_BUF_COL(BUF) CPP_BUF_COLUMN(BUF, (BUF)->cur)
+/* True if we have seen a "fatal" error. */
+#define CPP_FATAL_ERRORS(PFILE) (cpp_errors (PFILE) >= CPP_FATAL_LIMIT)
/* Name under which this program was invoked. */
extern const char *progname;
-/* The structure of a node in the hash table. The hash table
- has entries for all tokens defined by #define commands (type T_MACRO),
- plus some special tokens like __LINE__ (these each have their own
- type, and the appropriate code is run when that type of node is seen.
- It does not contain control words like "#define", which are recognized
- by a separate piece of code. */
-
-/* different flavors of hash nodes */
+/* The structure of a node in the hash table. The hash table has
+ entries for all identifiers: either macros defined by #define
+ commands (type NT_MACRO), assertions created with #assert
+ (NT_ASSERTION), or neither of the above (NT_VOID). Builtin macros
+ like __LINE__ are flagged NODE_BUILTIN. Poisioned identifiers are
+ flagged NODE_POISONED. NODE_OPERATOR (C++ only) indicates an
+ identifier that behaves like an operator such as "xor".
+ NODE_DIAGNOSTIC is for speed in lex_token: it indicates a
+ diagnostic may be required for this node. Currently this only
+ applies to __VA_ARGS__ and poisoned identifiers. */
+
+/* Hash node flags. */
+#define NODE_OPERATOR (1 << 0) /* C++ named operator. */
+#define NODE_POISONED (1 << 1) /* Poisoned identifier. */
+#define NODE_BUILTIN (1 << 2) /* Builtin macro. */
+#define NODE_DIAGNOSTIC (1 << 3) /* Possible diagnostic when lexed. */
+#define NODE_WARN (1 << 4) /* Warn if redefined or undefined. */
+#define NODE_DISABLED (1 << 5) /* A disabled macro. */
+
+/* Different flavors of hash node. */
enum node_type
{
- T_VOID = 0, /* no definition yet */
- T_SPECLINE, /* `__LINE__' */
- T_DATE, /* `__DATE__' */
- T_FILE, /* `__FILE__' */
- T_BASE_FILE, /* `__BASE_FILE__' */
- T_INCLUDE_LEVEL, /* `__INCLUDE_LEVEL__' */
- T_TIME, /* `__TIME__' */
- T_STDC, /* `__STDC__' */
- T_CONST, /* Constant string, used by `__SIZE_TYPE__' etc */
- T_XCONST, /* Ditto, but the string is malloced memory */
- T_POISON, /* poisoned identifier */
- T_MACRO, /* object-like macro */
- T_FMACRO, /* function-like macro */
- T_IDENTITY, /* macro defined to itself */
- T_EMPTY, /* macro defined to nothing */
- T_ASSERTION /* predicate for #assert */
+ NT_VOID = 0, /* No definition yet. */
+ NT_MACRO, /* A macro of some form. */
+ NT_ASSERTION /* Predicate for #assert. */
};
-/* There is a slot in the hashnode for use by front ends when integrated
- with cpplib. It holds a tree (see tree.h) but we mustn't drag that
- header into every user of cpplib.h. cpplib does not do anything with
- this slot except clear it when a new node is created. */
-union tree_node;
+/* Different flavors of builtin macro. _Pragma is an operator, but we
+ handle it with the builtin code for efficiency reasons. */
+enum builtin_type
+{
+ BT_SPECLINE = 0, /* `__LINE__' */
+ BT_DATE, /* `__DATE__' */
+ BT_FILE, /* `__FILE__' */
+ BT_BASE_FILE, /* `__BASE_FILE__' */
+ BT_INCLUDE_LEVEL, /* `__INCLUDE_LEVEL__' */
+ BT_TIME, /* `__TIME__' */
+ BT_STDC, /* `__STDC__' */
+ BT_PRAGMA /* `_Pragma' operator */
+};
+
+#define CPP_HASHNODE(HNODE) ((cpp_hashnode *) (HNODE))
+#define HT_NODE(NODE) ((ht_identifier *) (NODE))
+#define NODE_LEN(NODE) HT_LEN (&(NODE)->ident)
+#define NODE_NAME(NODE) HT_STR (&(NODE)->ident)
+/* The common part of an identifier node shared amongst all 3 C front
+ ends. Also used to store CPP identifiers, which are a superset of
+ identifiers in the grammatical sense. */
struct cpp_hashnode
{
- unsigned int hash; /* cached hash value */
- unsigned short length; /* length of name */
- ENUM_BITFIELD(node_type) type : 8; /* node type */
- char disabled; /* macro turned off for rescan? */
-
- union {
- const unsigned char *cpval; /* some predefined macros */
- const struct object_defn *odefn; /* #define foo bar */
- const struct funct_defn *fdefn; /* #define foo(x) bar(x) */
- struct predicate *pred; /* #assert */
- } value;
-
- union tree_node *fe_value; /* front end value */
+ struct ht_identifier ident;
+ unsigned short arg_index; /* Macro argument index. */
+ unsigned char directive_index; /* Index into directive table. */
+ unsigned char rid_code; /* Rid code - for front ends. */
+ ENUM_BITFIELD(node_type) type : 8; /* CPP node type. */
+ unsigned char flags; /* CPP flags. */
- const unsigned char name[1]; /* name[length] */
+ union
+ {
+ cpp_macro *macro; /* If a macro. */
+ struct answer *answers; /* Answers to an assertion. */
+ enum cpp_ttype operator; /* Code for a named operator. */
+ enum builtin_type builtin; /* Code for a builtin macro. */
+ } value;
};
-
-
-extern void _cpp_lex_file PARAMS((cpp_reader *));
+/* Call this first to get a handle to pass to other functions. */
+extern cpp_reader *cpp_create_reader PARAMS ((enum c_lang));
+
+/* Call these to get pointers to the options and callback structures
+ for a given reader. These pointers are good until you call
+ cpp_finish on that reader. You can either edit the callbacks
+ through the pointer returned from cpp_get_callbacks, or set them
+ with cpp_set_callbacks. */
+extern cpp_options *cpp_get_options PARAMS ((cpp_reader *));
+extern const struct line_maps *cpp_get_line_maps PARAMS ((cpp_reader *));
+extern cpp_callbacks *cpp_get_callbacks PARAMS ((cpp_reader *));
+extern void cpp_set_callbacks PARAMS ((cpp_reader *, cpp_callbacks *));
+
+/* Now call cpp_handle_option[s] to handle 1[or more] switches. The
+ return value is the number of arguments used. If
+ cpp_handle_options returns without using all arguments, it couldn't
+ understand the next switch. When there are no switches left, you
+ must call cpp_post_options before calling cpp_read_main_file. Only
+ after cpp_post_options are the contents of the cpp_options
+ structure reliable. Options processing is not completed until you
+ call cpp_finish_options. */
extern int cpp_handle_options PARAMS ((cpp_reader *, int, char **));
-extern enum cpp_ttype cpp_get_token PARAMS ((cpp_reader *));
-extern enum cpp_ttype cpp_get_non_space_token PARAMS ((cpp_reader *));
-
-extern void cpp_reader_init PARAMS ((cpp_reader *));
-extern cpp_printer *cpp_printer_init PARAMS ((cpp_reader *, cpp_printer *));
-extern int cpp_start_read PARAMS ((cpp_reader *, cpp_printer *, const char *));
-extern void cpp_output_tokens PARAMS ((cpp_reader *, cpp_printer *));
-extern void cpp_output_list PARAMS ((cpp_reader *, cpp_printer *,
- const cpp_toklist *));
-extern void cpp_finish PARAMS ((cpp_reader *, cpp_printer *));
-extern void cpp_cleanup PARAMS ((cpp_reader *));
-
-extern cpp_buffer *cpp_file_buffer PARAMS((cpp_reader *));
+extern int cpp_handle_option PARAMS ((cpp_reader *, int, char **));
+extern void cpp_post_options PARAMS ((cpp_reader *));
+
+/* This function reads the file, but does not start preprocessing. It
+ returns the name of the original file; this is the same as the
+ input file, except for preprocessed input. This will generate at
+ least one file change callback, and possibly a line change callback
+ too. If there was an error opening the file, it returns NULL.
+
+ If you want cpplib to manage its own hashtable, pass in a NULL
+ pointer. Otherise you should pass in an initialised hash table
+ that cpplib will share; this technique is used by the C front
+ ends. */
+extern const char *cpp_read_main_file PARAMS ((cpp_reader *, const char *,
+ struct ht *));
+
+/* Deferred handling of command line options that can generate debug
+ callbacks, such as -D and -imacros. Call this after
+ cpp_read_main_file. The front ends need this separation so they
+ can initialize debug output with the original file name, returned
+ from cpp_read_main_file, before they get debug callbacks. */
+extern void cpp_finish_options PARAMS ((cpp_reader *));
+
+/* Call this to release the handle at the end of preprocessing. Any
+ use of the handle after this function returns is invalid. Returns
+ cpp_errors (pfile). */
+extern int cpp_destroy PARAMS ((cpp_reader *));
+
+/* Error count. */
+extern unsigned int cpp_errors PARAMS ((cpp_reader *));
+
+extern unsigned int cpp_token_len PARAMS ((const cpp_token *));
+extern unsigned char *cpp_token_as_text PARAMS ((cpp_reader *,
+ const cpp_token *));
+extern unsigned char *cpp_spell_token PARAMS ((cpp_reader *, const cpp_token *,
+ unsigned char *));
+extern void cpp_register_pragma PARAMS ((cpp_reader *,
+ const char *, const char *,
+ void (*) PARAMS ((cpp_reader *))));
+
+extern void cpp_finish PARAMS ((cpp_reader *));
+extern int cpp_avoid_paste PARAMS ((cpp_reader *, const cpp_token *,
+ const cpp_token *));
+extern const cpp_token *cpp_get_token PARAMS ((cpp_reader *));
+extern const unsigned char *cpp_macro_definition PARAMS ((cpp_reader *,
+ const cpp_hashnode *));
+extern void _cpp_backup_tokens PARAMS ((cpp_reader *, unsigned int));
+
+/* Evaluate a CPP_CHAR or CPP_WCHAR token. */
+extern HOST_WIDE_INT
+cpp_interpret_charconst PARAMS ((cpp_reader *, const cpp_token *,
+ int, int, unsigned int *));
+
extern void cpp_define PARAMS ((cpp_reader *, const char *));
extern void cpp_assert PARAMS ((cpp_reader *, const char *));
extern void cpp_undef PARAMS ((cpp_reader *, const char *));
extern void cpp_unassert PARAMS ((cpp_reader *, const char *));
-extern void cpp_free_token_list PARAMS ((cpp_toklist *));
+extern cpp_buffer *cpp_push_buffer PARAMS ((cpp_reader *,
+ const unsigned char *, size_t,
+ int, int));
+extern int cpp_defined PARAMS ((cpp_reader *, const unsigned char *, int));
/* N.B. The error-message-printer prototypes have not been nicely
formatted because exgettext needs to see 'msgid' on the same line
ATTRIBUTE_PRINTF_4;
extern void cpp_pedwarn_with_line PARAMS ((cpp_reader *, int, int, const char *msgid, ...))
ATTRIBUTE_PRINTF_4;
-extern void cpp_pedwarn_with_file_and_line PARAMS ((cpp_reader *, const char *, int, int, const char *msgid, ...))
- ATTRIBUTE_PRINTF_5;
-extern void cpp_error_from_errno PARAMS ((cpp_reader *, const char *));
-extern void cpp_notice_from_errno PARAMS ((cpp_reader *, const char *));
+extern void cpp_error_from_errno PARAMS ((cpp_reader *, const char *));
+extern void cpp_notice_from_errno PARAMS ((cpp_reader *, const char *));
/* In cpplex.c */
-extern cpp_buffer *cpp_push_buffer PARAMS ((cpp_reader *,
- const unsigned char *, long));
-extern cpp_buffer *cpp_pop_buffer PARAMS ((cpp_reader *));
-extern void cpp_scan_buffer PARAMS ((cpp_reader *, cpp_printer *));
-extern void cpp_scan_buffer_nooutput PARAMS ((cpp_reader *));
-extern int cpp_idcmp PARAMS ((const unsigned char *,
- size_t, const char *));
+extern int cpp_ideq PARAMS ((const cpp_token *,
+ const char *));
+extern void cpp_output_line PARAMS ((cpp_reader *, FILE *));
+extern void cpp_output_token PARAMS ((const cpp_token *, FILE *));
+extern const char *cpp_type2name PARAMS ((enum cpp_ttype));
+extern unsigned int cpp_parse_escape PARAMS ((cpp_reader *,
+ const unsigned char **,
+ const unsigned char *,
+ unsigned HOST_WIDE_INT, int));
/* In cpphash.c */
-extern int cpp_defined PARAMS ((cpp_reader *,
- const unsigned char *, int));
+
+/* Lookup an identifier in the hashtable. Puts the identifier in the
+ table if it is not already there. */
extern cpp_hashnode *cpp_lookup PARAMS ((cpp_reader *,
- const unsigned char *, int));
+ const unsigned char *,
+ unsigned int));
+
+typedef int (*cpp_cb) PARAMS ((cpp_reader *, cpp_hashnode *, void *));
+extern void cpp_forall_identifiers PARAMS ((cpp_reader *,
+ cpp_cb, void *));
+
+/* In cppmacro.c */
+extern void cpp_scan_nooutput PARAMS ((cpp_reader *));
+extern int cpp_sys_macro_p PARAMS ((cpp_reader *));
/* In cppfiles.c */
-extern int cpp_included PARAMS ((cpp_reader *, const char *));
-extern int cpp_read_file PARAMS ((cpp_reader *, const char *));
+extern int cpp_included PARAMS ((cpp_reader *, const char *));
+extern void cpp_make_system_header PARAMS ((cpp_reader *, int, int));
#ifdef __cplusplus
}
#endif
-#endif /* __GCC_CPPLIB__ */
+
+#endif /* ! GCC_CPPLIB_H */
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