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"
#ifdef __cplusplus
extern "C" {
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;
+struct ht;
/* The first two groups, apart from '=', can appear in preprocessor
expressions. This allows a lookup table to be implemented in
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_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. */ \
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};
-
/* Payload of a NUMBER, FLOAT, STRING, or COMMENT token. */
struct cpp_string
{
#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. */
/* A preprocessing token. This has been carefully packed and should
occupy 12 bytes on 32-bit hosts and 16 bytes on 64-bit hosts. */
union
{
- struct cpp_hashnode *node; /* An identifier. */
+ 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. */
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
-
/* Values for opts.dump_macros.
dump_only means inhibit output of the preprocessed text
and instead output the definitions of all user-defined
const char *deps_file;
/* 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. */
/* 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;
/* 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 */
+ /* True if --help, --version or --target-help appeared in the
+ options. Stand-alone CPP should then bail out after option
+ parsing; drivers might want to continue printing help. */
+ unsigned char help_only;
};
/* This structure is passed to the call back when changing file. */
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
+/* Call backs. */
+struct cpp_callbacks
{
- /* 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 macro_pool; /* For macro definitions. Permanent. */
- cpp_pool argument_pool; /* For macro arguments. Temporary. */
-
- /* 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;
-
- /* Opaque handle to the dependencies of mkdeps.c. Used by -M etc. */
- 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 (*file_change) PARAMS ((cpp_reader *, const cpp_file_change *));
void (*include) PARAMS ((cpp_reader *, const unsigned char *,
const cpp_token *));
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;
-
- /* 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;
-
- /* True if --help appeared in the options. Caller should then bail
- out after option parsing and printing its own help. See cppmain.c. */
- unsigned char help_only;
};
#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)
+#define CPP_FATAL_ERRORS(PFILE) (cpp_errors (PFILE) >= CPP_FATAL_LIMIT)
/* 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. */
/* Different flavors of hash node. */
enum node_type
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;
+#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 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 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 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
extern int cpp_handle_option PARAMS ((cpp_reader *, int, char **));
extern void cpp_post_options 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 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 *,
extern const unsigned char *cpp_macro_definition PARAMS ((cpp_reader *,
const cpp_hashnode *));
+/* Evaluate a CPP_CHAR or CPP_WCHAR token. */
+extern HOST_WIDE_INT
+cpp_interpret_charconst PARAMS ((cpp_reader *, const cpp_token *,
+ int, int, unsigned int *));
+
extern void cpp_define PARAMS ((cpp_reader *, const char *));
extern void cpp_assert PARAMS ((cpp_reader *, const char *));
extern void cpp_undef PARAMS ((cpp_reader *, const char *));
extern void cpp_output_line PARAMS ((cpp_reader *, FILE *));
extern void cpp_output_token PARAMS ((const cpp_token *, FILE *));
extern const char *cpp_type2name PARAMS ((enum cpp_ttype));
+extern unsigned int cpp_parse_escape PARAMS ((cpp_reader *,
+ const unsigned char **,
+ const unsigned char *,
+ unsigned HOST_WIDE_INT, int));
/* In cpphash.c */
+
+/* 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 int cpp_sys_macro_p PARAMS ((cpp_reader *));
/* 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);
-}
-
#ifdef __cplusplus
}
#endif
-#endif /* __GCC_CPPLIB__ */
+#endif /* GCC_CPPLIB_H */
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