/* Definitions for CPP library.
- Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000
+ Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002
Free Software Foundation, Inc.
Written by Per Bothner, 1994-95.
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 _C_PRAGMA_H
+#ifndef GCC_C_PRAGMA_H
typedef struct cpp_reader cpp_reader;
#endif
typedef struct cpp_buffer cpp_buffer;
typedef struct cpp_token cpp_token;
typedef struct cpp_string cpp_string;
typedef struct cpp_hashnode cpp_hashnode;
-typedef struct cpp_pool cpp_pool;
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 directive; /* These are deliberately incomplete. */
struct answer;
-struct cpp_macro;
-struct macro_args;
-struct cpp_chunk;
struct file_name_map_list;
-struct htab;
-/* The first two groups, apart from '=', can appear in preprocessor
- expressions. This allows a lookup table to be implemented in
- _cpp_parse_expr.
+/* The first three groups, apart from '=', can appear in preprocessor
+ expressions (+= and -= are used to indicate unary + and - resp.).
+ This allows a lookup table to be implemented in _cpp_parse_expr.
The first group, to CPP_LAST_EQ, can be immediately followed by an
'='. The lexer needs operators ending in '=', like ">>=", to be in
#define CPP_LAST_EQ CPP_MAX
#define CPP_FIRST_DIGRAPH CPP_HASH
#define CPP_LAST_PUNCTUATOR CPP_DOT_STAR
+#define CPP_LAST_CPP_OP CPP_LESS_EQ
#define TTYPE_TABLE \
OP(CPP_EQ = 0, "=") \
OP(CPP_COMMA, ",") /* grouping */ \
OP(CPP_OPEN_PAREN, "(") \
OP(CPP_CLOSE_PAREN, ")") \
+ TK(CPP_EOF, SPELL_NONE) \
OP(CPP_EQ_EQ, "==") /* compare */ \
OP(CPP_NOT_EQ, "!=") \
OP(CPP_GREATER_EQ, ">=") \
OP(CPP_LESS_EQ, "<=") \
\
+ /* These two are unary + / - in preprocessor expressions. */ \
OP(CPP_PLUS_EQ, "+=") /* math */ \
OP(CPP_MINUS_EQ, "-=") \
+\
OP(CPP_MULT_EQ, "*=") \
OP(CPP_DIV_EQ, "/=") \
OP(CPP_MOD_EQ, "%=") \
OP(CPP_SCOPE, "::") \
OP(CPP_DEREF_STAR, "->*") \
OP(CPP_DOT_STAR, ".*") \
+ 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_STRING, SPELL_STRING) /* "string" */ \
TK(CPP_WSTRING, SPELL_STRING) /* L"string" */ \
- TK(CPP_OSTRING, SPELL_STRING) /* @"string" - Objective C */ \
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. */
#define OP(e, s) e,
#define TK(e, s) e,
/* 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};
-
-/* Multiple-include optimisation. */
-enum mi_state {MI_FAILED = 0, MI_OUTSIDE};
-enum mi_ind {MI_IND_NONE = 0, MI_IND_NOT};
+ CLK_GNUCXX, CLK_CXX98, 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 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
{
- struct cpp_hashnode *node; /* An identifier. */
+ 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;
-};
-
-/* Memory pools. */
-struct cpp_pool
-{
- struct cpp_chunk *cur, *locked;
- unsigned char *pos; /* Current position. */
- unsigned int align;
- unsigned int locks;
-};
-
-typedef struct toklist toklist;
-struct toklist
-{
- cpp_token *first;
- cpp_token *limit;
-};
-
-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. */
- struct toklist list;
-
- /* For a macro context, these are the macro and its arguments. */
- cpp_macro *macro;
-};
-
-/* 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;
-
-/* 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 type wide enough to hold any multibyte source character.
+ cpplib's character constant interpreter requires an unsigned type.
+ Also, a typedef for the signed equivalent. */
+#ifndef MAX_WCHAR_TYPE_SIZE
+# define MAX_WCHAR_TYPE_SIZE WCHAR_TYPE_SIZE
+#endif
+#if CHAR_BIT * SIZEOF_INT >= MAX_WCHAR_TYPE_SIZE
+# define CPPCHAR_SIGNED_T int
+#else
+# if CHAR_BIT * SIZEOF_LONG >= MAX_WCHAR_TYPE_SIZE || !HAVE_LONG_LONG
+# define CPPCHAR_SIGNED_T long
+# else
+# define CPPCHAR_SIGNED_T long long
+# endif
+#endif
+typedef unsigned CPPCHAR_SIGNED_T cppchar_t;
+typedef CPPCHAR_SIGNED_T cppchar_signed_t;
/* Values for opts.dump_macros.
dump_only means inhibit output of the preprocessed text
carries all the options visible to the command line. */
struct cpp_options
{
- /* Name of input and output files. */
- const char *in_fname;
- const char *out_fname;
-
/* 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;
/* Nonzero means handle cplusplus style comments */
unsigned char cplusplus_comments;
- /* Nonzero means handle #import, for objective C. */
+ /* Nonzero means define __OBJC__, treat @ as a special token, and
+ use the OBJC[PLUS]_INCLUDE_PATH environment variable. */
unsigned char objc;
/* 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;
/* 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 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"). */
- unsigned char print_deps_append;
-
/* Nonzero means print names of header files (-H). */
unsigned char print_include_names;
/* Nonzero means warn if #import is used. */
unsigned char warn_import;
+ /* Nonzero means warn about multicharacter charconsts. */
+ unsigned char warn_multichar;
+
/* Nonzero means warn about various incompatibilities with
traditional C. */
unsigned char warn_traditional;
+ /* Nonzero means warn about long long numeric constants. */
+ unsigned char warn_long_long;
+
+ /* Nonzero means warn about text after an #endif (or #else). */
+ unsigned char warn_endif_labels;
+
+ /* Nonzero means warn about implicit sign changes owing to integer
+ promotions. */
+ unsigned char warn_num_sign_change;
+
/* 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. */
unsigned char warn_undef;
+ /* Nonzero means warn of unused macros from the main file. */
+ unsigned char warn_unused_macros;
+
/* Nonzero for the 1999 C Standard, including corrigenda and amendments. */
unsigned char c99;
+ /* Nonzero if we are conforming to a specific C or C++ standard. */
+ unsigned char std;
+
/* Nonzero means give all the error messages the ANSI standard requires. */
unsigned char pedantic;
/* 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;
-};
-struct lexer_state
-{
- /* Nonzero if first token on line is CPP_HASH. */
- unsigned char in_directive;
+ /* Nonzero means handle C++ alternate operator names. */
+ unsigned char operator_names;
- /* Nonzero if in a directive that takes angle-bracketed headers. */
- unsigned char angled_headers;
+ /* True for traditional preprocessing. */
+ unsigned char traditional;
- /* Nonzero to save comments. Turned off if discard_comments, and in
- all directives apart from #define. */
- unsigned char save_comments;
+ /* Dependency generation. */
+ struct
+ {
+ /* Style of header dependencies to generate. */
+ enum {DEPS_NONE = 0, DEPS_USER, DEPS_SYSTEM } style;
- /* If nonzero the next token is at the beginning of the line. */
- unsigned char next_bol;
+ /* Assume missing files are generated files. */
+ bool missing_files;
- /* Nonzero if we're mid-comment. */
- unsigned char lexing_comment;
+ /* Generate phony targets for each dependency apart from the first
+ one. */
+ bool phony_targets;
- /* Nonzero if lexing __VA_ARGS__ is valid. */
- unsigned char va_args_ok;
+ /* If true, no dependency is generated on the main file. */
+ bool ignore_main_file;
+ } deps;
- /* Nonzero if lexing poisoned identifiers is valid. */
- unsigned char poisoned_ok;
+ /* Target-specific features set by the front end or client. */
- /* Nonzero to prevent macro expansion. */
- unsigned char prevent_expansion;
+ /* Precision for target CPP arithmetic, target characters, target
+ ints and target wide characters, respectively. */
+ size_t precision, char_precision, int_precision, wchar_precision;
- /* Nonzero when parsing arguments to a function-like macro. */
- unsigned char parsing_args;
+ /* True means chars (wide chars) are unsigned. */
+ bool unsigned_char, unsigned_wchar;
- /* Nonzero when in a # NUMBER directive. */
- unsigned char line_extension;
+ /* Nonzero means __STDC__ should have the value 0 in system headers. */
+ unsigned char stdc_0_in_system_headers;
};
-/* Special nodes - identifiers with predefined significance. */
-struct spec_nodes
-{
- cpp_hashnode *n_L; /* L"str" */
- cpp_hashnode *n_defined; /* defined operator */
- cpp_hashnode *n__Pragma; /* _Pragma operator */
- cpp_hashnode *n__STRICT_ANSI__; /* STDC_0_IN_SYSTEM_HEADERS */
- cpp_hashnode *n__CHAR_UNSIGNED__; /* plain char is unsigned */
- cpp_hashnode *n__VA_ARGS__; /* C99 vararg macros */
-};
-
-/* 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
+/* Call backs. */
+struct cpp_callbacks
{
- const char *filename;
- unsigned int lineno;
+ /* 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));
+ /* Called when the client has a chance to properly register
+ built-ins with cpp_define() and cpp_assert(). */
+ void (*register_builtins) PARAMS ((cpp_reader *));
};
-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. */
-};
-
-/* 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;
-
- /* Lexer state. */
- struct lexer_state state;
-
- /* The position of the last lexed token and last lexed directive. */
- cpp_lexer_pos lexer_pos;
- cpp_lexer_pos directive_pos;
-
- /* Memory pools. */
- cpp_pool ident_pool; /* For all identifiers, and permanent
- numbers and strings. */
- cpp_pool temp_string_pool; /* For temporary numbers and strings. */
- cpp_pool macro_pool; /* For macro definitions. Permanent. */
- cpp_pool argument_pool; /* For macro arguments. Temporary. */
- cpp_pool* string_pool; /* Either temp_string_pool or ident_pool. */
-
- /* Context stack. */
- struct cpp_context base_context;
- struct cpp_context *context;
-
- /* If in_directive, the directive if known. */
- const struct directive *directive;
-
- /* Multiple inlcude optimisation. */
- enum mi_state mi_state;
- enum mi_ind mi_if_not_defined;
- unsigned int mi_lexed;
- const cpp_hashnode *mi_cmacro;
- const cpp_hashnode *mi_ind_cmacro;
-
- /* Token lookahead. */
- struct cpp_lookahead *la_read; /* Read from this lookahead. */
- struct cpp_lookahead *la_write; /* Write to this lookahead. */
- struct cpp_lookahead *la_unused; /* Free store. */
- struct cpp_lookahead *la_saved; /* Backup when entering directive. */
-
- /* Error counter for exit code. */
- unsigned int errors;
-
- /* Line and column where a newline was first seen in a string
- constant (multi-line strings). */
- cpp_lexer_pos mlstring_pos;
-
- /* Buffer to hold macro definition string. */
- unsigned char *macro_buffer;
- unsigned int macro_buffer_len;
-
- /* Current depth in #include directives that use <...>. */
- unsigned int system_include_depth;
-
- /* Current depth of buffer stack. */
- unsigned int buffer_stack_depth;
-
- /* Current depth in #include directives. */
- unsigned int include_depth;
-
- /* Hash table of macros and assertions. See cpphash.c. */
- struct htab *hashtab;
-
- /* Tree of other included files. See cppfiles.c. */
- struct splay_tree_s *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;
-
- /* Date and time tokens. Calculated together if either is requested. */
- cpp_token date;
- cpp_token time;
-
- /* Buffer of -M output. */
- 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. */
- struct {
- void (*change_file) 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 *));
- } cb;
-
- /* User visible options. */
- struct cpp_options opts;
-
- /* Special nodes - identifiers with predefined significance to the
- preprocessor. */
- struct spec_nodes spec_nodes;
-
- /* Nonzero means we have printed (while error reporting) a list of
- containing files that matches the current status. */
- unsigned char input_stack_listing_current;
-
- /* We're printed a warning recommending against using #import. */
- unsigned char import_warning;
-
- /* 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;
-};
-
-#define CPP_FATAL_LIMIT 1000
-/* True if we have seen a "fatal" error. */
-#define CPP_FATAL_ERRORS(READER) ((READER)->errors >= CPP_FATAL_LIMIT)
-
-#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 + (BUF)->col_adjust)
-#define CPP_BUF_COL(BUF) CPP_BUF_COLUMN(BUF, (BUF)->cur)
-
/* Name under which this program was invoked. */
extern const char *progname;
#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
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 */
};
-/* 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;
+#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
{
- const unsigned char *name; /* Null-terminated name. */
- unsigned int hash; /* Cached hash value. */
- unsigned short length; /* Length of name excluding null. */
+ struct ht_identifier ident;
unsigned short arg_index; /* Macro argument index. */
unsigned char directive_index; /* Index into directive table. */
- ENUM_BITFIELD(node_type) type : 8; /* Node type. */
- unsigned char flags; /* Node flags. */
+ unsigned char rid_code; /* Rid code - for front ends. */
+ ENUM_BITFIELD(node_type) type : 8; /* CPP node type. */
+ unsigned char flags; /* CPP flags. */
union
{
enum cpp_ttype operator; /* Code for a named operator. */
enum builtin_type builtin; /* Code for a builtin macro. */
} value;
-
- union tree_node *fe_value; /* Front end value. */
};
+/* Call this first to get a handle to pass to other functions. */
extern cpp_reader *cpp_create_reader PARAMS ((enum c_lang));
+
+/* Call this to change the selected language standard (e.g. because of
+ command line options). */
+extern void cpp_set_lang PARAMS ((cpp_reader *, enum c_lang));
+
+/* Add a dependency TARGET. Quote it for "make" if QUOTE. Can be
+ called any number of times before cpp_read_main_file(). If no
+ targets have been added before cpp_read_main_file(), then the
+ default target is used. */
+extern void cpp_add_dependency_target PARAMS ((cpp_reader *,
+ const char * target,
+ int quote));
+
+/* 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. 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 **));
+
+/* 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 initialized 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 finish preprocessing. If you requested dependency
+ generation, pass an open stream to write the information to,
+ otherwise NULL. It is your responsibility to close the stream.
+
+ Returns cpp_errors (pfile). */
+extern int cpp_finish PARAMS ((cpp_reader *, FILE *deps_stream));
+
+/* 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 void 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 int cpp_handle_options PARAMS ((cpp_reader *, int, char **));
-extern int cpp_handle_option PARAMS ((cpp_reader *, int, char **));
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 void cpp_cleanup 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 cppchar_t
+cpp_interpret_charconst PARAMS ((cpp_reader *, const cpp_token *,
+ unsigned int *, int *));
+/* Used to register builtins during the register_builtins callback.
+ The text is the same as the command line argument. */
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 cpp_buffer *cpp_push_buffer PARAMS ((cpp_reader *,
- const unsigned char *, size_t));
-extern cpp_buffer *cpp_pop_buffer PARAMS ((cpp_reader *));
+ const unsigned char *, size_t,
+ int, int));
extern int cpp_defined PARAMS ((cpp_reader *, const unsigned char *, int));
+/* A preprocessing number. Code assumes that any unused high bits of
+ the double integer are set to zero. */
+typedef unsigned HOST_WIDE_INT cpp_num_part;
+typedef struct cpp_num cpp_num;
+struct cpp_num
+{
+ cpp_num_part high;
+ cpp_num_part low;
+ bool unsignedp; /* True if value should be treated as unsigned. */
+ bool overflow; /* True if the most recent calculation overflowed. */
+};
+
+/* cpplib provides two interfaces for interpretation of preprocessing
+ numbers.
+
+ cpp_classify_number categorizes numeric constants according to
+ their field (integer, floating point, or invalid), radix (decimal,
+ octal, hexadecimal), and type suffixes. */
+
+#define CPP_N_CATEGORY 0x000F
+#define CPP_N_INVALID 0x0000
+#define CPP_N_INTEGER 0x0001
+#define CPP_N_FLOATING 0x0002
+
+#define CPP_N_WIDTH 0x00F0
+#define CPP_N_SMALL 0x0010 /* int, float. */
+#define CPP_N_MEDIUM 0x0020 /* long, double. */
+#define CPP_N_LARGE 0x0040 /* long long, long double. */
+
+#define CPP_N_RADIX 0x0F00
+#define CPP_N_DECIMAL 0x0100
+#define CPP_N_HEX 0x0200
+#define CPP_N_OCTAL 0x0400
+
+#define CPP_N_UNSIGNED 0x1000 /* Properties. */
+#define CPP_N_IMAGINARY 0x2000
+
+/* Classify a CPP_NUMBER token. The return value is a combination of
+ the flags from the above sets. */
+extern unsigned cpp_classify_number PARAMS ((cpp_reader *, const cpp_token *));
+
+/* Evaluate a token classified as category CPP_N_INTEGER. */
+extern cpp_num cpp_interpret_integer PARAMS ((cpp_reader *, const cpp_token *,
+ unsigned int type));
+
+/* Sign extend a number, with PRECISION significant bits and all
+ others assumed clear, to fill out a cpp_num structure. */
+cpp_num cpp_num_sign_extend PARAMS ((cpp_num, size_t));
+
+/* 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
+/* An internal consistency check failed. Prints "internal error: ",
+ otherwise the same as DL_ERROR. */
+#define DL_ICE 0x04
+/* Extracts a diagnostic level from an int. */
+#define DL_EXTRACT(l) (l & 0xf)
+/* Nonzero 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));
+/* Returns the value of an escape sequence, truncated to the correct
+ target precision. PSTR points to the input pointer, which is just
+ after the backslash. LIMIT is how much text we have. WIDE is true
+ if the escape sequence is part of a wide character constant or
+ string literal. Handles all relevant diagnostics. */
+extern cppchar_t cpp_parse_escape PARAMS ((cpp_reader *,
+ const unsigned char ** pstr,
+ const unsigned char *limit,
+ int wide));
/* In cpphash.c */
+
+/* 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 *, size_t));
+ const unsigned char *,
+ unsigned int));
+
+typedef int (*cpp_cb) PARAMS ((cpp_reader *, cpp_hashnode *, void *));
extern void cpp_forall_identifiers PARAMS ((cpp_reader *,
- int (*) PARAMS ((cpp_reader *,
- cpp_hashnode *,
- void *)),
- void *));
+ 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));
-/* These are inline functions instead of macros so we can get type
- checking. */
-typedef unsigned char U_CHAR;
-#define U (const U_CHAR *) /* Intended use: U"string" */
-
-static inline int ustrcmp PARAMS ((const U_CHAR *, const U_CHAR *));
-static inline int ustrncmp PARAMS ((const U_CHAR *, const U_CHAR *,
- size_t));
-static inline size_t ustrlen PARAMS ((const U_CHAR *));
-static inline U_CHAR *uxstrdup PARAMS ((const U_CHAR *));
-static inline U_CHAR *ustrchr PARAMS ((const U_CHAR *, int));
-static inline int ufputs PARAMS ((const U_CHAR *, FILE *));
-
-static inline int
-ustrcmp (s1, s2)
- const U_CHAR *s1, *s2;
-{
- return strcmp ((const char *)s1, (const char *)s2);
-}
-
-static inline int
-ustrncmp (s1, s2, n)
- const U_CHAR *s1, *s2;
- size_t n;
-{
- return strncmp ((const char *)s1, (const char *)s2, n);
-}
-
-static inline size_t
-ustrlen (s1)
- const U_CHAR *s1;
-{
- return strlen ((const char *)s1);
-}
-
-static inline U_CHAR *
-uxstrdup (s1)
- const U_CHAR *s1;
-{
- return (U_CHAR *) xstrdup ((const char *)s1);
-}
-
-static inline U_CHAR *
-ustrchr (s1, c)
- const U_CHAR *s1;
- int c;
-{
- return (U_CHAR *) strchr ((const char *)s1, c);
-}
-
-static inline int
-ufputs (s, f)
- const U_CHAR *s;
- FILE *f;
-{
- return fputs ((const char *)s, f);
-}
+/* In cppmain.c */
+extern void cpp_preprocess_file PARAMS ((cpp_reader *, const char *, FILE *));
#ifdef __cplusplus
}
#endif
-#endif /* __GCC_CPPLIB__ */
+
+#endif /* ! GCC_CPPLIB_H */
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