/* Definitions for CPP library.
- Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001
+ Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002
Free Software Foundation, Inc.
Written by Per Bothner, 1994-95.
#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 _C_PRAGMA_H
+#ifndef GCC_C_PRAGMA_H
typedef struct cpp_reader cpp_reader;
#endif
typedef struct cpp_buffer cpp_buffer;
typedef struct cpp_string cpp_string;
typedef struct cpp_hashnode cpp_hashnode;
typedef struct cpp_macro cpp_macro;
-typedef struct cpp_lexer_pos cpp_lexer_pos;
-typedef struct cpp_lookahead cpp_lookahead;
typedef struct cpp_callbacks cpp_callbacks;
struct answer;
struct file_name_map_list;
-struct ht;
/* The first two groups, apart from '=', can appear in preprocessor
expressions. This allows a lookup table to be implemented in
OP(CPP_ATSIGN, "@") /* used in Objective C */ \
\
TK(CPP_NAME, SPELL_IDENT) /* word */ \
- TK(CPP_INT, SPELL_STRING) /* 23 */ \
- TK(CPP_FLOAT, SPELL_STRING) /* 3.14159 */ \
- TK(CPP_NUMBER, SPELL_STRING) /* 34_be+ta */ \
+ TK(CPP_NUMBER, SPELL_NUMBER) /* 34_be+ta */ \
\
TK(CPP_CHAR, SPELL_STRING) /* 'char' */ \
TK(CPP_WCHAR, SPELL_STRING) /* L'char' */ \
TK(CPP_WSTRING, SPELL_STRING) /* L"string" */ \
TK(CPP_HEADER_NAME, SPELL_STRING) /* <stdio.h> in #include */ \
\
- TK(CPP_COMMENT, SPELL_STRING) /* Only if output comments. */ \
+ TK(CPP_COMMENT, SPELL_NUMBER) /* Only if output comments. */ \
+ /* SPELL_NUMBER happens to DTRT. */ \
TK(CPP_MACRO_ARG, SPELL_NONE) /* Macro argument. */ \
- OP(CPP_EOF, "EOL") /* End of line or file. */
+ 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 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. */
+/* Payload of a NUMBER, STRING, CHAR or COMMENT token. */
struct cpp_string
{
unsigned int len;
#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 AVOID_LPASTE (1 << 6) /* Check left for accidental pastes. */
+#define BOL (1 << 6) /* Token at beginning of line. */
/* A preprocessing token. This has been carefully packed and should
- occupy 12 bytes on 32-bit hosts and 16 bytes on 64-bit hosts. */
+ occupy 16 bytes on 32-bit hosts and 24 bytes on 64-bit hosts. */
struct cpp_token
{
+ 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
{
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;
};
-/* The position of a token in the current file. */
-struct cpp_lexer_pos
-{
- unsigned int line;
- unsigned int output_line;
- unsigned short col;
-};
-
-typedef struct cpp_token_with_pos cpp_token_with_pos;
-struct cpp_token_with_pos
-{
- cpp_token token;
- cpp_lexer_pos pos;
-};
-
-/* Token lookahead. */
-struct cpp_lookahead
-{
- struct cpp_lookahead *next;
- cpp_token_with_pos *tokens;
- cpp_lexer_pos pos;
- unsigned int cur, count, cap;
-};
-
-/* 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;
+/* A standalone character. It is unsigned for the same reason we use
+ unsigned char - to avoid signedness issues. */
+typedef unsigned 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
/* Non-0 means -v, so print the full set of include dirs. */
unsigned char verbose;
+ /* Nonzero means chars are signed. */
+ unsigned char signed_char;
+
/* Nonzero means use extra default include directories for C++. */
unsigned char cplusplus;
/* Nonzero means don't copy comments into the output file. */
unsigned char discard_comments;
+ /* Nonzero means don't copy comments into the output file during
+ macro expansion. */
+ unsigned char discard_comments_in_macro_exp;
+
/* Nonzero means process the ISO trigraph sequences. */
unsigned char trigraphs;
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). */
traditional C. */
unsigned char warn_traditional;
+ /* Nonzero means warn about text after an #endif (or #else). */
+ unsigned char warn_endif_labels;
+
/* Nonzero means turn warnings into errors. */
unsigned char warnings_are_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 warn if undefined identifiers are evaluated in an #if. */
/* Print column number in error messages. */
unsigned char show_column;
- /* Treat C++ alternate operator names special. */
+ /* Nonzero means handle C++ alternate operator names. */
unsigned char operator_names;
/* True if --help, --version or --target-help appeared in the
unsigned char help_only;
};
-/* This structure is passed to the call back when changing file. */
-enum cpp_fc_reason {FC_ENTER = 0, FC_LEAVE, FC_RENAME};
-
-struct cpp_file_loc
-{
- const char *filename;
- unsigned int lineno;
-};
-
-typedef struct cpp_file_change cpp_file_change;
-struct cpp_file_change
-{
- struct cpp_file_loc from; /* Line of #include or #line. */
- struct cpp_file_loc to; /* Line after #include or #line, or start. */
- enum cpp_fc_reason reason; /* Reason for change. */
- unsigned char sysp; /* Nonzero if system header. */
- unsigned char externc; /* Nonzero if wrapper needed. */
-};
-
/* Call backs. */
struct cpp_callbacks
{
- void (*file_change) PARAMS ((cpp_reader *, const cpp_file_change *));
- void (*include) PARAMS ((cpp_reader *, const unsigned char *,
- const cpp_token *));
- void (*define) PARAMS ((cpp_reader *, cpp_hashnode *));
- void (*undef) PARAMS ((cpp_reader *, cpp_hashnode *));
- void (*poison) PARAMS ((cpp_reader *));
- void (*ident) PARAMS ((cpp_reader *, const cpp_string *));
- void (*def_pragma) PARAMS ((cpp_reader *));
+ /* 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. */
+/* 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;
-/* Where does this buffer come from? A faked include, a source file,
- a builtin macro, a command-line option, or a _Pragma operator. */
-enum cpp_buffer_type {BUF_FAKE, BUF_FILE, BUF_BUILTIN,
- BUF_CL_OPTION, BUF_PRAGMA};
-
/* 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
#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
NT_ASSERTION /* Predicate for #assert. */
};
-/* Different flavors of builtin macro. */
+/* 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_BASE_FILE, /* `__BASE_FILE__' */
BT_INCLUDE_LEVEL, /* `__INCLUDE_LEVEL__' */
BT_TIME, /* `__TIME__' */
- BT_STDC /* `__STDC__' */
+ BT_STDC, /* `__STDC__' */
+ BT_PRAGMA /* `_Pragma' operator */
};
#define CPP_HASHNODE(HNODE) ((cpp_hashnode *) (HNODE))
} value;
};
-/* Call this first to get a handle to pass to other functions. If you
- want cpplib to manage its own hashtable, pass in a NULL pointer.
- Or you can pass in an initialised hash table that cpplib will use;
- this technique is used by the C front ends. */
-extern cpp_reader *cpp_create_reader PARAMS ((struct ht *,
- enum c_lang));
-
-/* Call this to release the handle. Any use of the handle after this
- function returns is invalid. Returns cpp_errors (pfile). */
-extern int cpp_destroy 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
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 *));
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_start_read. Only
+ 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. */
+ structure reliable. Options processing is not completed until you
+ call cpp_finish_options. */
extern int cpp_handle_options PARAMS ((cpp_reader *, int, char **));
-extern int cpp_handle_option PARAMS ((cpp_reader *, int, char **));
+extern int cpp_handle_option PARAMS ((cpp_reader *, int, char **, int));
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 void cpp_register_pragma PARAMS ((cpp_reader *,
const char *, const char *,
void (*) PARAMS ((cpp_reader *))));
-extern void cpp_register_pragma_space PARAMS ((cpp_reader *, const char *));
-extern int cpp_start_read PARAMS ((cpp_reader *, const char *));
extern void cpp_finish PARAMS ((cpp_reader *));
extern int cpp_avoid_paste PARAMS ((cpp_reader *, const cpp_token *,
const cpp_token *));
-extern enum cpp_ttype cpp_can_paste PARAMS ((cpp_reader *, const cpp_token *,
- const cpp_token *, int *));
-extern void cpp_get_token PARAMS ((cpp_reader *, cpp_token *));
-extern const cpp_lexer_pos *cpp_get_line PARAMS ((cpp_reader *));
+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 *));
+ int, unsigned int *));
extern void cpp_define PARAMS ((cpp_reader *, const char *));
extern void cpp_assert PARAMS ((cpp_reader *, const char *));
extern cpp_buffer *cpp_push_buffer PARAMS ((cpp_reader *,
const unsigned char *, size_t,
- enum cpp_buffer_type,
- const char *));
-extern cpp_buffer *cpp_pop_buffer PARAMS ((cpp_reader *));
+ int, int));
extern int cpp_defined PARAMS ((cpp_reader *, const unsigned char *, int));
+/* Diagnostic levels. To get a dianostic without associating a
+ position in the translation unit with it, use cpp_error_with_line
+ with a line number of zero. */
+
+/* Warning, an error with -Werror. */
+#define DL_WARNING 0x00
+/* Same as DL_WARNING, except it is not suppressed in system headers. */
+#define DL_WARNING_SYSHDR 0x01
+/* Warning, an error with -pedantic-errors or -Werror. */
+#define DL_PEDWARN 0x02
+/* An error. */
+#define DL_ERROR 0x03
+/* A fatal error. We do not exit, to support use of cpplib as a
+ library, but may only return CPP_EOF tokens thereon. It is the
+ caller's responsibility to check CPP_FATAL_ERRORS. */
+#define DL_FATAL 0x04
+/* An internal consistency check failed. Prints "internal error: ",
+ otherwise the same as DL_FATAL. */
+#define DL_ICE 0x05
+/* Extracts a diagnostic level from an int. */
+#define DL_EXTRACT(l) (l & 0xf)
+/* Non-zero if a diagnostic level is one of the warnings. */
+#define DL_WARNING_P(l) (DL_EXTRACT (l) >= DL_WARNING \
+ && DL_EXTRACT (l) <= DL_PEDWARN)
+
/* N.B. The error-message-printer prototypes have not been nicely
formatted because exgettext needs to see 'msgid' on the same line
as the name of the function in order to work properly. Only the
string argument gets a name in an effort to keep the lines from
getting ridiculously oversized. */
-extern void cpp_ice PARAMS ((cpp_reader *, const char *msgid, ...))
- ATTRIBUTE_PRINTF_2;
-extern void cpp_fatal PARAMS ((cpp_reader *, const char *msgid, ...))
- ATTRIBUTE_PRINTF_2;
-extern void cpp_error PARAMS ((cpp_reader *, const char *msgid, ...))
- ATTRIBUTE_PRINTF_2;
-extern void cpp_warning PARAMS ((cpp_reader *, const char *msgid, ...))
- ATTRIBUTE_PRINTF_2;
-extern void cpp_pedwarn PARAMS ((cpp_reader *, const char *msgid, ...))
- ATTRIBUTE_PRINTF_2;
-extern void cpp_notice PARAMS ((cpp_reader *, const char *msgid, ...))
- ATTRIBUTE_PRINTF_2;
-extern void cpp_error_with_line PARAMS ((cpp_reader *, int, int, const char *msgid, ...))
- ATTRIBUTE_PRINTF_4;
-extern void cpp_warning_with_line PARAMS ((cpp_reader *, int, int, const char *msgid, ...))
- 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, ...))
+/* Output a diagnostic of some kind. */
+extern void cpp_error PARAMS ((cpp_reader *, int, const char *msgid, ...))
+ ATTRIBUTE_PRINTF_3;
+
+/* Output a diagnostic of severity LEVEL, with "MSG: " preceding the
+ error string of errno. No location is printed. */
+extern void cpp_errno PARAMS ((cpp_reader *, int level, const char *msg));
+
+/* Same as cpp_error, except additionally specifies a position as a
+ (translation unit) physical line and physical column. If the line is
+ zero, then no location is printed. */
+extern void cpp_error_with_line PARAMS ((cpp_reader *, int, unsigned, unsigned, 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 *));
/* In cpplex.c */
extern int cpp_ideq PARAMS ((const cpp_token *,
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));
/* In cpphash.c */
cpp_cb, void *));
/* In cppmacro.c */
-extern void cpp_scan_buffer_nooutput PARAMS ((cpp_reader *, int));
-extern void cpp_start_lookahead PARAMS ((cpp_reader *));
-extern void cpp_stop_lookahead PARAMS ((cpp_reader *, int));
+extern void cpp_scan_nooutput PARAMS ((cpp_reader *));
extern int cpp_sys_macro_p PARAMS ((cpp_reader *));
+extern unsigned char *cpp_quote_string PARAMS ((unsigned char *,
+ const unsigned char *,
+ unsigned int));
/* In cppfiles.c */
extern int cpp_included PARAMS ((cpp_reader *, const char *));
extern void cpp_make_system_header PARAMS ((cpp_reader *, int, int));
+/* In cppmain.c */
+extern void cpp_preprocess_file PARAMS ((cpp_reader *));
+
#ifdef __cplusplus
}
#endif
-#endif /* GCC_CPPLIB_H */
+
+#endif /* ! GCC_CPPLIB_H */