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e16/epp/cpplib.h

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/* Definitions for CPP library.
* Copyright (C) 1995 Free Software Foundation, Inc.
* Written by Per Bothner, 1994-95.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2, or (at your option) any
* later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
*
* 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! */
#include <sys/types.h>
#include <sys/stat.h>
#ifdef __cplusplus
extern "C"
{
#endif
#define STATIC_BUFFERS
struct parse_file;
typedef struct cpp_reader cpp_reader;
typedef struct cpp_buffer cpp_buffer;
typedef struct cpp_options cpp_options;
typedef struct hashnode cpp_hashnode;
enum cpp_token
{
CPP_EOF = -1,
CPP_OTHER = 0,
CPP_COMMENT = 1,
CPP_HSPACE,
CPP_VSPACE, /* newlines and #line directives */
CPP_NAME,
CPP_NUMBER,
CPP_CHAR,
CPP_STRING,
CPP_DIRECTIVE,
CPP_LPAREN, /* "(" */
CPP_RPAREN, /* ")" */
CPP_LBRACE, /* "{" */
CPP_RBRACE, /* "}" */
CPP_COMMA, /* "," */
CPP_SEMICOLON, /* ";" */
CPP_3DOTS, /* "..." */
/* POP_TOKEN is returned when we've popped a cpp_buffer. */
CPP_POP
};
#ifndef PARAMS
#ifdef __STDC
#define PARAMS(P) P
#else
#define PARAMS(P) ()
#endif
#endif /* !PARAMS */
typedef enum cpp_token (*parse_underflow_t) PARAMS((cpp_reader *));
typedef int (*parse_cleanup_t) PARAMS((cpp_buffer *, cpp_reader *));
/* A parse_marker indicates a previous position,
* which we can backtrack to. */
struct parse_marker
{
cpp_buffer *buf;
struct parse_marker *next;
int position;
};
extern void parse_set_mark PARAMS((struct parse_marker *, cpp_reader *));
extern void parse_clear_mark PARAMS((struct parse_marker *));
extern void parse_goto_mark PARAMS((struct parse_marker *, cpp_reader *));
extern void parse_move_mark PARAMS((struct parse_marker *, cpp_reader *));
extern int cpp_handle_options PARAMS((cpp_reader *, int, char **));
extern enum cpp_token cpp_get_token PARAMS((struct parse_marker *));
extern void cpp_skip_hspace PARAMS((cpp_reader *));
extern enum cpp_token cpp_get_non_space_token PARAMS((cpp_reader *));
/* Maintain and search list of included files, for #import. */
#define IMPORT_HASH_SIZE 31
struct import_file
{
char *name;
ino_t inode;
dev_t dev;
struct import_file *next;
};
/* If we have a huge buffer, may need to cache more recent counts */
#define CPP_LINE_BASE(BUF) ((BUF)->buf + (BUF)->line_base)
struct cpp_buffer
{
unsigned char *buf;
unsigned char *cur;
unsigned char *rlimit; /* end of valid data */
unsigned char *alimit; /* end of allocated buffer */
unsigned char *prev; /* start of current token */
char *fname;
/* Filename specified with #line command. */
char *nominal_fname;
/* Record where in the search path this file was found.
* For #include_next. */
struct file_name_list *dir;
long line_base;
long lineno; /* Line number at CPP_LINE_BASE. */
long colno; /* Column number at CPP_LINE_BASE. */
#ifndef STATIC_BUFFERS
cpp_buffer *chain;
#endif
parse_underflow_t underflow;
parse_cleanup_t cleanup;
void *data;
struct parse_marker *marks;
/* Value of if_stack at start of this file.
* Used to prohibit unmatched #endif (etc) in an include file. */
struct if_stack *if_stack;
/* True if this is a header file included using <FILENAME>. */
char system_header_p;
char seen_eof;
/* True if buffer contains escape sequences.
* Currently there are are only two kind:
* "@-" means following identifier should not be macro-expanded.
* "@ " means a token-separator. This turns into " " in final output
* if not stringizing and needed to separate tokens; otherwise nothing.
* "@@" means a normal '@'.
* (An '@' inside a string stands for itself and is never an escape.) */
char has_escapes;
};
struct cpp_pending; /* Forward declaration - for C++. */
struct file_name_map_list;
typedef struct assertion_hashnode ASSERTION_HASHNODE;
#define ASSERTION_HASHSIZE 37
#ifdef STATIC_BUFFERS
/* Maximum nesting of cpp_buffers. We use a static limit, partly for
* efficiency, and partly to limit runaway recursion. */
#define CPP_STACK_MAX 200
#endif
struct cpp_reader
{
unsigned char *limit;
parse_underflow_t get_token;
cpp_buffer *buffer;
#ifdef STATIC_BUFFERS
cpp_buffer buffer_stack[CPP_STACK_MAX];
#endif
int errors; /* Error counter for exit code */
void *data;
unsigned char *token_buffer;
int token_buffer_size;
/* Line where a newline was first seen in a string constant. */
int multiline_string_line;
/* Current depth in #include directives that use <...>. */
int system_include_depth;
/* List of included files that contained #pragma once. */
struct file_name_list *dont_repeat_files;
/* List of other included files.
* If ->control_macro if nonzero, the file had a #ifndef
* around the entire contents, and ->control_macro gives the macro name. */
struct file_name_list *all_include_files;
/* Current maximum length of directory names in the search path
* for include files. (Altered as we get more of them.) */
int max_include_len;
/* Hash table of files already included with #include or #import. */
struct import_file *import_hash_table[IMPORT_HASH_SIZE];
struct if_stack *if_stack;
/* Nonzero means we are inside an IF during a -pcp run. In this mode
* macro expansion is done, and preconditions are output for all macro
* uses requiring them. */
char pcp_inside_if;
/* Nonzero means we have printed (while error reporting) a list of
* containing files that matches the current status. */
char input_stack_listing_current;
/* If non-zero, macros are not expanded. */
char no_macro_expand;
/* Print column number in error messages. */
char show_column;
/* We're printed a warning recommending against using #import. */
char import_warning;
/* If true, character between '<' and '>' are a single (string) token. */
char parsing_include_directive;
/* True if escape sequences (as described for has_escapes in
* parse_buffer) should be emitted. */
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. */
char only_seen_white;
/* Nonzero means this file was included with a -imacros or -include
* command line and should not be recorded as an include file. */
int no_record_file;
long lineno;
struct tm *timebuf;
ASSERTION_HASHNODE *assertion_hashtab[ASSERTION_HASHSIZE];
/* Buffer of -M output. */
char *deps_buffer;
/* Number of bytes allocated in above. */
int deps_allocated_size;
/* Number of bytes used. */
int deps_size;
/* Number of bytes since the last newline. */
int deps_column;
};
#define CPP_BUF_PEEK(BUFFER) \
((BUFFER)->cur < (BUFFER)->rlimit ? *(BUFFER)->cur : EOF)
#define CPP_BUF_GET(BUFFER) \
((BUFFER)->cur < (BUFFER)->rlimit ? *(BUFFER)->cur++ : EOF)
#define CPP_FORWARD(BUFFER, N) ((BUFFER)->cur += (N))
/* Number of characters currently in PFILE's output buffer. */
#define CPP_WRITTEN(PFILE) ((PFILE)->limit - (PFILE)->token_buffer)
#define CPP_PWRITTEN(PFILE) ((PFILE)->limit)
/* Make sure PFILE->token_buffer has space for at least N more characters. */
#define CPP_RESERVE(PFILE, N) \
((unsigned int)(CPP_WRITTEN (PFILE) + N) > (unsigned int) (PFILE)->token_buffer_size \
&& (cpp_grow_buffer (PFILE, N), 0))
/* Append string STR (of length N) to PFILE's output buffer.
* Assume there is enough space. */
#define CPP_PUTS_Q(PFILE, STR, N) \
(memcpy (STR, (PFILE)->limit, (N)), (PFILE)->limit += (N))
/* Append string STR (of length N) to PFILE's output buffer. Make space. */
#define CPP_PUTS(PFILE, STR, N) CPP_RESERVE(PFILE, N), CPP_PUTS_Q(PFILE, STR,N)
/* Append character CH to PFILE's output buffer. Assume sufficient space. */
#define CPP_PUTC_Q(PFILE, CH) (*(PFILE)->limit++ = (CH))
/* Append character CH to PFILE's output buffer. Make space if need be. */
#define CPP_PUTC(PFILE, CH) (CPP_RESERVE (PFILE, 1), CPP_PUTC_Q (PFILE, CH))
/* Make sure PFILE->limit is followed by '\0'. */
#define CPP_NUL_TERMINATE_Q(PFILE) (*(PFILE)->limit = 0)
#define CPP_NUL_TERMINATE(PFILE) (CPP_RESERVE(PFILE, 1), *(PFILE)->limit = 0)
#define CPP_ADJUST_WRITTEN(PFILE,DELTA) ((PFILE)->limit += (DELTA))
#define CPP_SET_WRITTEN(PFILE,N) ((PFILE)->limit = (PFILE)->token_buffer + (N))
#define CPP_OPTIONS(PFILE) ((cpp_options*)(PFILE)->data)
#define CPP_BUFFER(PFILE) ((PFILE)->buffer)
#ifdef STATIC_BUFFERS
#define CPP_PREV_BUFFER(BUFFER) ((BUFFER)+1)
#define CPP_NULL_BUFFER(PFILE) (&(PFILE)->buffer_stack[CPP_STACK_MAX])
#else
#define CPP_PREV_BUFFER(BUFFER) ((BUFFER)->chain)
#define CPP_NULL_BUFFER(PFILE) ((cpp_buffer*)0)
#endif
/* Pointed to by parse_file::data. */
struct cpp_options
{
char *in_fname;
/* Name of output file, for error messages. */
char *out_fname;
struct file_name_map_list *map_list;
/* Non-0 means -v, so print the full set of include dirs. */
char verbose;
/* Nonzero means use extra default include directories for C++. */
char cplusplus;
/* Nonzero means handle cplusplus style comments */
char cplusplus_comments;
/* Nonzero means handle #import, for objective C. */
char objc;
/* Nonzero means this is an assembly file, and allow
* unknown directives, which could be comments. */
int lang_asm;
/* Nonzero means turn NOTREACHED into #pragma NOTREACHED etc */
char for_lint;
/* Nonzero means handle CHILL comment syntax
* and output CHILL string delimiter for __DATE___ etc. */
char chill;
/* Nonzero means copy comments into the output file. */
char put_out_comments;
/* Nonzero means don't process the ANSI trigraph sequences. */
char no_trigraphs;
/* Nonzero means print the names of included files rather than
* the preprocessed output. 1 means just the #include "...",
* 2 means #include <...> as well. */
char print_deps;
/* Nonzero if missing .h files in -M output are assumed to be generated
* files and not errors. */
char print_deps_missing_files;
/* If true, fopen (deps_file, "a") else fopen (deps_file, "w"). */
char print_deps_append;
/* Nonzero means print names of header files (-H). */
char print_include_names;
/* Nonzero means try to make failure to fit ANSI C an error. */
char pedantic_errors;
/* Nonzero means don't print warning messages. -w. */
char inhibit_warnings;
/* Nonzero means warn if slash-star appears in a comment. */
char warn_comments;
/* Nonzero means warn if there are any trigraphs. */
char warn_trigraphs;
/* Nonzero means warn if #import is used. */
char warn_import;
/* Nonzero means warn if a macro argument is (or would be)
* stringified with -traditional. */
char warn_stringify;
/* Nonzero means turn warnings into errors. */
char warnings_are_errors;
/* Nonzero causes output not to be done,
* but directives such as #define that have side effects
* are still obeyed. */
char no_output;
/* Nonzero means don't output line number information. */
char no_line_commands;
/* Nonzero means output the text in failing conditionals,
* inside #failed ... #endfailed. */
char output_conditionals;
/* Nonzero means -I- has been seen,
* so don't look for #include "foo" the source-file directory. */
char ignore_srcdir;
/* Zero means dollar signs are punctuation.
* -$ stores 0; -traditional may store 1. Default is 1 for VMS, 0 otherwise.
* This must be 0 for correct processing of this ANSI C program:
* #define foo(a) #a
* #define lose(b) foo (b)
* #define test$
* lose (test) */
char dollars_in_ident;
#ifndef DOLLARS_IN_IDENTIFIERS
#define DOLLARS_IN_IDENTIFIERS 1
#endif
/* Nonzero means try to imitate old fashioned non-ANSI preprocessor. */
char traditional;
/* Nonzero means give all the error messages the ANSI standard requires. */
char pedantic;
char done_initializing;
struct file_name_list *include; /* First dir to search */
/* First dir to search for <file> */
/* This is the first element to use for #include <...>.
* If it is 0, use the entire chain for such includes. */
struct file_name_list *first_bracket_include;
/* This is the first element in the chain that corresponds to
* a directory of system header files. */
struct file_name_list *first_system_include;
struct file_name_list *last_include; /* Last in chain */
/* Chain of include directories to put at the end of the other chain. */
struct file_name_list *after_include;
struct file_name_list *last_after_include; /* Last in chain */
/* Chain to put at the start of the system include files. */
struct file_name_list *before_system;
struct file_name_list *last_before_system; /* Last in chain */
/* Directory prefix that should replace `/usr' in the standard
* include file directories. */
char *include_prefix;
char inhibit_predefs;
char no_standard_includes;
char no_standard_cplusplus_includes;
/* 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.
* dump_names means pass #define and the macro name through to output.
* dump_definitions means pass the whole definition (plus #define) through
*/
enum
{
dump_none = 0, dump_only, dump_names, dump_definitions
}
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. */
int debug_output;
/* Pending -D, -U and -A options, in reverse order. */
struct cpp_pending *pending;
/* File name which deps are being written to.
* This is 0 if deps are being written to stdout. */
char *deps_file;
/* Target-name to write with the dependency information. */
char *deps_target;
};
#define CPP_TRADITIONAL(PFILE) (CPP_OPTIONS(PFILE)-> traditional)
#define CPP_PEDANTIC(PFILE) (CPP_OPTIONS (PFILE)->pedantic)
#define CPP_PRINT_DEPS(PFILE) (CPP_OPTIONS (PFILE)->print_deps)
/* Name under which this program was invoked. */
extern 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 --- also used in keyword table */
enum node_type
{
T_DEFINE = 1, /* the `#define' keyword */
T_INCLUDE, /* the `#include' keyword */
T_INCLUDE_NEXT, /* the `#include_next' keyword */
T_IMPORT, /* the `#import' keyword */
T_IFDEF, /* the `#ifdef' keyword */
T_IFNDEF, /* the `#ifndef' keyword */
T_IF, /* the `#if' keyword */
T_ELSE, /* `#else' */
T_PRAGMA, /* `#pragma' */
T_ELIF, /* `#elif' */
T_UNDEF, /* `#undef' */
T_LINE, /* `#line' */
T_ERROR, /* `#error' */
T_WARNING, /* `#warning' */
T_ENDIF, /* `#endif' */
T_SCCS, /* `#sccs', used on system V. */
T_IDENT, /* `#ident', used on system V. */
T_ASSERT, /* `#assert', taken from system V. */
T_UNASSERT, /* `#unassert', taken from system V. */
T_SPECLINE, /* special symbol `__LINE__' */
T_DATE, /* `__DATE__' */
T_FILE, /* `__FILE__' */
T_BASE_FILE, /* `__BASE_FILE__' */
T_INCLUDE_LEVEL, /* `__INCLUDE_LEVEL__' */
T_VERSION, /* `__VERSION__' */
T_SIZE_TYPE, /* `__SIZE_TYPE__' */
T_PTRDIFF_TYPE, /* `__PTRDIFF_TYPE__' */
T_WCHAR_TYPE, /* `__WCHAR_TYPE__' */
T_USER_LABEL_PREFIX_TYPE, /* `__USER_LABEL_PREFIX__' */
T_REGISTER_PREFIX_TYPE, /* `__REGISTER_PREFIX__' */
T_TIME, /* `__TIME__' */
T_CONST, /* Constant value, used by `__STDC__' */
T_MACRO, /* macro defined by `#define' */
T_DISABLED, /* macro temporarily turned off for rescan */
T_SPEC_DEFINED, /* special `defined' macro for use in #if statements */
T_PCSTRING, /* precompiled string (hashval is KEYDEF *) */
T_UNUSED /* Used for something not defined. */
};
/* Structure returned by create_definition */
typedef struct macrodef MACRODEF;
struct macrodef
{
struct definition *defn;
unsigned char *symnam;
int symlen;
};
/* Structure allocated for every #define. For a simple replacement
* such as
* #define foo bar ,
* nargs = -1, the `pattern' list is null, and the expansion is just
* the replacement text. Nargs = 0 means a functionlike macro with no args,
* e.g.,
* #define getchar() getc (stdin) .
* When there are args, the expansion is the replacement text with the
* args squashed out, and the reflist is a list describing how to
* build the output from the input: e.g., "3 chars, then the 1st arg,
* then 9 chars, then the 3rd arg, then 0 chars, then the 2nd arg".
* The chars here come from the expansion. Whatever is left of the
* expansion after the last arg-occurrence is copied after that arg.
* Note that the reflist can be arbitrarily long---
* its length depends on the number of times the arguments appear in
* the replacement text, not how many args there are. Example:
* #define f(x) x+x+x+x+x+x+x would have replacement text "++++++" and
* pattern list
* { (0, 1), (1, 1), (1, 1), ..., (1, 1), NULL }
* where (x, y) means (nchars, argno). */
typedef struct definition DEFINITION;
struct definition
{
int nargs;
int length; /* length of expansion string */
int predefined; /* True if the macro was builtin or */
/* came from the command line */
unsigned char *expansion;
int line; /* Line number of definition */
char *file; /* File of definition */
char rest_args; /* Nonzero if last arg. absorbs the rest */
struct reflist
{
struct reflist *next;
char stringify; /* nonzero if this arg was preceded by a
* # operator. */
char raw_before; /* Nonzero if a ## operator before arg. */
char raw_after; /* Nonzero if a ## operator after arg. */
char rest_args; /* Nonzero if this arg. absorbs the rest */
int nchars; /* Number of literal chars to copy before
* this arg occurrence. */
int argno; /* Number of arg to substitute (origin-0) */
}
*pattern;
union
{
/* Names of macro args, concatenated in reverse order
* with comma-space between them.
* The only use of this is that we warn on redefinition
* if this differs between the old and new definitions. */
unsigned char *argnames;
}
args;
};
extern unsigned char is_idchar[256];
/* Stack of conditionals currently in progress
* (including both successful and failing conditionals). */
struct if_stack
{
struct if_stack *next; /* for chaining to the next stack frame */
char *fname; /* copied from input when frame is made */
int lineno; /* similarly */
int if_succeeded; /* true if a leg of this if-group
* has been passed through rescan */
unsigned char *control_macro; /* For #ifndef at start of file,
* this is the macro name tested. */
enum node_type type; /* type of last directive seen in this group */
};
typedef struct if_stack IF_STACK_FRAME;
extern void cpp_buf_line_and_col PARAMS((cpp_buffer *, long *, long *));
extern cpp_buffer *cpp_file_buffer PARAMS((cpp_reader *));
extern void cpp_define PARAMS((cpp_reader *, unsigned char *));
extern void cpp_error();
extern void cpp_warning();
extern void cpp_pedwarn();
extern void cpp_error_with_line();
extern void cpp_pedwarn_with_line();
extern void cpp_pedwarn_with_file_and_line();
extern void fatal();
extern void cpp_error_from_errno();
extern void cpp_perror_with_name();
extern void cpp_pfatal_with_name();
extern void cpp_grow_buffer PARAMS((cpp_reader *, long));
extern int cpp_parse_escape PARAMS((cpp_reader *, char **));
extern cpp_buffer *cpp_push_buffer PARAMS((cpp_reader *, unsigned char *, long));
extern cpp_buffer *cpp_pop_buffer PARAMS((cpp_reader *));
extern cpp_hashnode *cpp_lookup PARAMS((cpp_reader *, const unsigned char *,
int, int));
#ifdef __EMX__
#define PATH_SEPARATOR ';'
#endif
#ifdef __cplusplus
}
#endif
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