/* Definitions for CPP library.
- Copyright (C) 1995, 96-99, 2000 Free Software Foundation, Inc.
+ Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000
+ Free Software Foundation, Inc.
Written by Per Bothner, 1994-95.
This program is free software; you can redistribute it and/or modify it
extern "C" {
#endif
+/* For complex reasons, cpp_reader is also typedefed in c-pragma.h. */
+#ifndef _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_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;
+
+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 group, to CPP_LAST_EQ, can be immediately followed by an
+ '='. The lexer needs operators ending in '=', like ">>=", to be in
+ the same order as their counterparts without the '=', like ">>". */
+
+/* Positions in the table. */
+#define CPP_LAST_EQ CPP_MAX
+#define CPP_FIRST_DIGRAPH CPP_HASH
+#define CPP_LAST_PUNCTUATOR CPP_DOT_STAR
+
+#define TTYPE_TABLE \
+ 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, ">?") \
+\
+ 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, "<=") \
+\
+ 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. */ \
+ 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, ".*") \
+\
+ 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_CHAR, SPELL_STRING) /* 'char' */ \
+ TK(CPP_WCHAR, SPELL_STRING) /* L'char' */ \
+ TK(CPP_OTHER, SPELL_CHAR) /* stray punctuation */ \
+\
+ 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_MACRO_ARG, SPELL_NONE) /* Macro argument. */ \
+ OP(CPP_EOF, "EOL") /* End of line or file. */
+
+#define OP(e, s) e,
+#define TK(e, s) e,
enum cpp_ttype
{
- CPP_EOF = -1,
- CPP_OTHER = 0,
- CPP_COMMENT = 1,
- CPP_HSPACE,
- CPP_VSPACE, /* newlines and #line directives */
- CPP_NAME,
- CPP_MACRO,
- CPP_NUMBER,
- CPP_CHAR,
- CPP_WCHAR,
- CPP_STRING,
- CPP_WSTRING,
- CPP_DIRECTIVE,
- CPP_ASSERTION, /* #machine(a29k) */
- CPP_STRINGIZE, /* stringize macro argument */
- CPP_TOKPASTE, /* paste macro arg with next/prev token */
- CPP_LPAREN, /* "(" */
- CPP_RPAREN, /* ")" */
- CPP_LBRACE, /* "{" */
- CPP_RBRACE, /* "}" */
- CPP_COMMA, /* "," */
- CPP_SEMICOLON, /* ";" */
- CPP_3DOTS, /* "..." */
- CPP_POP /* We're about to pop the buffer stack. */
+ TTYPE_TABLE
+ N_TTYPES
};
+#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};
-typedef int (*parse_cleanup_t) PARAMS((cpp_buffer *, cpp_reader *));
+/* Multiple-include optimisation. */
+enum mi_state {MI_FAILED = 0, MI_OUTSIDE};
+enum mi_ind {MI_IND_NONE = 0, MI_IND_NOT};
-struct cpp_buffer
+/* Payload of a NUMBER, FLOAT, STRING, or COMMENT token. */
+struct cpp_string
{
- 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. */
+ unsigned int len;
+ const unsigned char *text;
+};
- struct cpp_buffer *prev;
+/* Flags for the cpp_token structure. */
+#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. */
+
+/* A preprocessing token. This has been carefully packed and should
+ occupy 12 bytes on 32-bit hosts and 16 bytes on 64-bit hosts. */
+struct cpp_token
+{
+ ENUM_BITFIELD(cpp_ttype) type : CHAR_BIT; /* token type */
+ unsigned char flags; /* flags - see above */
+
+ union
+ {
+ struct cpp_hashnode *node; /* An identifier. */
+ 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;
+};
- /* Filename specified with #line command. */
- const char *nominal_fname;
- /* Actual directory of this file, used only for "" includes */
- struct file_name_list *actual_dir;
+/* The position of a token in the current file. */
+struct cpp_lexer_pos
+{
+ unsigned int line;
+ unsigned int output_line;
+ unsigned short col;
+};
- /* Pointer into the include hash table. Used for include_next and
- to record control macros. */
- struct ihash *ihash;
+typedef struct cpp_token_with_pos cpp_token_with_pos;
+struct cpp_token_with_pos
+{
+ cpp_token token;
+ cpp_lexer_pos pos;
+};
- parse_cleanup_t cleanup;
+/* Token lookahead. */
+struct cpp_lookahead
+{
+ struct cpp_lookahead *next;
+ cpp_token_with_pos *tokens;
+ cpp_lexer_pos pos;
+ unsigned int cur, count, cap;
+};
- /* If the buffer is the expansion of a macro, this points to the
- macro's hash table entry. */
- struct hashnode *macro;
+/* Memory pools. */
+struct cpp_pool
+{
+ struct cpp_chunk *cur, *locked;
+ unsigned char *pos; /* Current position. */
+ unsigned int align;
+ unsigned int locks;
+};
- /* Value of if_stack at start of this file.
- Used to prohibit unmatched #endif (etc) in an include file. */
- struct if_stack *if_stack;
+typedef struct toklist toklist;
+struct toklist
+{
+ cpp_token *first;
+ cpp_token *limit;
+};
- /* Line number at line_base (above). */
- unsigned int lineno;
+typedef struct cpp_context cpp_context;
+struct cpp_context
+{
+ /* Doubly-linked list. */
+ cpp_context *next, *prev;
- /* True if this is a header file included using <FILENAME>. */
- char system_header_p;
-
- /* True if end-of-file has already been hit once in this buffer. */
- char seen_eof;
-
- /* 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;
-
- /* Used by the C++ frontend to implement redirected input (such as for
- default argument and/or template parsing). */
- char manual_pop;
-
- /* True if we have already warned about C++ comments in this file.
- The warning happens only for C89 extended mode with -pedantic on,
- and only once per file (otherwise it would be far too noisy). */
- char warned_cplusplus_comments;
+ /* 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;
};
-struct file_name_map_list;
-struct htab;
+/* 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. */
/* Values for opts.dump_macros.
dump_only means inhibit output of the preprocessed text
and instead output the definitions of all user-defined
- macros in a form suitable for use as input to cccp.
+ macros in a form suitable for use as input to cpp.
dump_names means pass #define and the macro name through to output.
dump_definitions means pass the whole definition (plus #define) through
*/
const char *in_fname;
const char *out_fname;
+ /* Characters between tab stops. */
+ unsigned int tabstop;
+
/* Pending options - -D, -U, -A, -I, -ixxx. */
struct cpp_pending *pending;
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. */
/* 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. */
/* 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;
/* Print column number in error messages. */
unsigned char show_column;
+
+ /* Treat C++ alternate operator names special. */
+ unsigned char operator_names;
};
+struct lexer_state
+{
+ /* Nonzero if first token on line is CPP_HASH. */
+ unsigned char in_directive;
+
+ /* Nonzero if in a directive that takes angle-bracketed headers. */
+ unsigned char angled_headers;
+
+ /* Nonzero to save comments. Turned off if discard_comments, and in
+ all directives apart from #define. */
+ unsigned char save_comments;
+
+ /* If nonzero the next token is at the beginning of the line. */
+ unsigned char next_bol;
+
+ /* Nonzero if we're mid-comment. */
+ unsigned char lexing_comment;
+
+ /* Nonzero if lexing __VA_ARGS__ is valid. */
+ unsigned char va_args_ok;
+
+ /* Nonzero if lexing poisoned identifiers is valid. */
+ unsigned char poisoned_ok;
+
+ /* Nonzero to prevent macro expansion. */
+ unsigned char prevent_expansion;
+
+ /* Nonzero when parsing arguments to a function-like macro. */
+ unsigned char parsing_args;
+
+ /* Nonzero when in a # NUMBER directive. */
+ unsigned char line_extension;
+};
+
+/* 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
+{
+ 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. */
+};
/* 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. */
+ tokens. Usually, there is only one cpp_reader object active. */
struct cpp_reader
{
+ /* Top of buffer stack. */
cpp_buffer *buffer;
- /* 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 */
+ /* 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 where a newline was first seen in a string constant. */
- unsigned int multiline_string_line;
+ /* 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. */
+ /* Current depth of buffer stack. */
unsigned int buffer_stack_depth;
- /* Hash table of macros and assertions. See cpphash.c */
+ /* Current depth in #include directives. */
+ unsigned int include_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;
+ /* 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. */
+ /* 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;
- struct if_stack *if_stack;
- const unsigned char *potential_control_macro;
+ /* Date and time tokens. Calculated together if either is requested. */
+ cpp_token date;
+ cpp_token time;
/* 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;
+ /* 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;
- /* 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;
+ /* Special nodes - identifiers with predefined significance to the
+ preprocessor. */
+ struct spec_nodes spec_nodes;
/* 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;
-
- /* If true, # introduces an assertion (see do_assert) */
- unsigned char parsing_if_directive;
-
- /* If true, # and ## are the STRINGIZE and TOKPASTE operators */
- unsigned char parsing_define_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;
-};
-
-/* 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
-{
- 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 */
+ /* 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)
-/* 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_COL(BUF) ((BUF)->cur - (BUF)->line_base)
+#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;
+/* 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
+ (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. */
+
+/* Different flavors of hash node. */
+enum node_type
+{
+ NT_VOID = 0, /* No definition yet. */
+ NT_MACRO, /* A macro of some form. */
+ NT_ASSERTION /* Predicate for #assert. */
+};
+
+/* Different flavors of builtin macro. */
+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__' */
+};
+
+/* 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;
+
+struct cpp_hashnode
+{
+ const unsigned char *name; /* Null-terminated name. */
+ unsigned int hash; /* Cached hash value. */
+ unsigned short length; /* Length of name excluding null. */
+ 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. */
+
+ 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;
+
+ union tree_node *fe_value; /* Front end value. */
+};
+
+extern cpp_reader *cpp_create_reader PARAMS ((enum c_lang));
+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 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_finish PARAMS ((cpp_reader *, cpp_printer *));
+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 unsigned char *cpp_macro_definition PARAMS ((cpp_reader *,
+ const cpp_hashnode *));
-extern cpp_buffer *cpp_file_buffer PARAMS((cpp_reader *));
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,
+ enum cpp_buffer_type,
+ const char *));
+extern cpp_buffer *cpp_pop_buffer PARAMS ((cpp_reader *));
+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
as the name of the function in order to work properly. Only the
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_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));
/* In cpphash.c */
-extern int cpp_defined PARAMS ((cpp_reader *,
- const unsigned char *, int));
+extern cpp_hashnode *cpp_lookup PARAMS ((cpp_reader *,
+ const unsigned char *, size_t));
+extern void cpp_forall_identifiers PARAMS ((cpp_reader *,
+ int (*) PARAMS ((cpp_reader *,
+ cpp_hashnode *,
+ void *)),
+ 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));
/* 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));
+
+/* 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);
+}
#ifdef __cplusplus
}
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