struct directive; /* Deliberately incomplete. */
struct pending_option;
+struct op;
+
+typedef unsigned char uchar;
+#define U (const uchar *) /* Intended use: U"string" */
+
+#define BITS_PER_CPPCHAR_T (CHAR_BIT * sizeof (cppchar_t))
/* Test if a sign is valid within a preprocessing number. */
#define VALID_SIGN(c, prevc) \
efficiency, and partly to limit runaway recursion. */
#define CPP_STACK_MAX 200
+/* Host alignment handling. */
+struct dummy
+{
+ char c;
+ union
+ {
+ double d;
+ int *p;
+ } u;
+};
+
+#define DEFAULT_ALIGNMENT offsetof (struct dummy, u)
+#define CPP_ALIGN2(size, align) (((size) + ((align) - 1)) & ~((align) - 1))
+#define CPP_ALIGN(size) CPP_ALIGN2 (size, DEFAULT_ALIGNMENT)
+
+/* Each macro definition is recorded in a cpp_macro structure.
+ Variadic macros cannot occur with traditional cpp. */
+struct cpp_macro
+{
+ /* Parameters, if any. */
+ cpp_hashnode **params;
+
+ /* Replacement tokens (ISO) or replacement text (traditional). See
+ comment at top of cpptrad.c for how traditional function-like
+ macros are encoded. */
+ union
+ {
+ cpp_token *tokens;
+ const uchar *text;
+ } exp;
+
+ /* Definition line number. */
+ unsigned int line;
+
+ /* Number of tokens in expansion, or bytes for traditional macros. */
+ unsigned int count;
+
+ /* Number of parameters. */
+ unsigned short paramc;
+
+ /* If a function-like macro. */
+ unsigned int fun_like : 1;
+
+ /* If a variadic macro. */
+ unsigned int variadic : 1;
+
+ /* If macro defined in system header. */
+ unsigned int syshdr : 1;
+
+ /* Nonzero if it has been expanded or had its existence tested. */
+ unsigned int used : 1;
+};
+
+#define _cpp_mark_macro_used(NODE) do { \
+ if ((NODE)->type == NT_MACRO && !((NODE)->flags & NODE_BUILTIN)) \
+ (NODE)->value.macro->used = 1; } while (0)
+
/* A generic memory buffer, and operations on it. */
typedef struct _cpp_buff _cpp_buff;
struct _cpp_buff
of an earlier directory on the search path. */
ino_t ino;
dev_t dev;
- /* Non-zero if it is a system include directory. */
+ /* Nonzero if it is a system include directory. */
int sysp;
/* Mapping of file names for this directory. Only used on MS-DOS
and related platforms. */
cpp_token *base, *limit;
};
+/* Accessor macros for struct cpp_context. */
+#define FIRST(c) ((c)->u.iso.first)
+#define LAST(c) ((c)->u.iso.last)
+#define CUR(c) ((c)->u.trad.cur)
+#define RLIMIT(c) ((c)->u.trad.rlimit)
+
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. */
- union utoken first;
- union utoken last;
+ union
+ {
+ /* For ISO macro expansion. Contexts other than the base context
+ are contiguous tokens. e.g. macro expansions, expanded
+ argument tokens. */
+ struct
+ {
+ union utoken first;
+ union utoken last;
+ } iso;
+
+ /* For traditional macro expansion. */
+ struct
+ {
+ const uchar *cur;
+ const uchar *rlimit;
+ } trad;
+ } u;
/* If non-NULL, a buffer used for storage related to this context.
When the context is popped, the buffer is released. */
/* Nonzero if in a directive that takes angle-bracketed headers. */
unsigned char angled_headers;
+ /* Nonzero if in a #if or #elif directive. */
+ unsigned char in_expression;
+
/* Nonzero to save comments. Turned off if discard_comments, and in
all directives apart from #define. */
unsigned char save_comments;
unsigned char poisoned_ok;
/* Nonzero to prevent macro expansion. */
- unsigned char prevent_expansion;
+ unsigned char prevent_expansion;
/* Nonzero when parsing arguments to a function-like macro. */
unsigned char parsing_args;
+
+ /* Nonzero to skip evaluating part of an expression. */
+ unsigned int skip_eval;
};
/* Special nodes - identifiers with predefined significance. */
cpp_hashnode *n_defined; /* defined operator */
cpp_hashnode *n_true; /* C++ keyword true */
cpp_hashnode *n_false; /* C++ keyword false */
- cpp_hashnode *n__STRICT_ANSI__; /* STDC_0_IN_SYSTEM_HEADERS */
cpp_hashnode *n__VA_ARGS__; /* C99 vararg macros */
};
+/* Encapsulates state used to convert a stream of tokens into a text
+ file. */
+struct printer
+{
+ FILE *outf; /* Stream to write to. */
+ const struct line_map *map; /* Logical to physical line mappings. */
+ const cpp_token *prev; /* Previous token. */
+ const cpp_token *source; /* Source token for spacing. */
+ unsigned int line; /* Line currently being written. */
+ unsigned char printed; /* Nonzero if something output at line. */
+};
+
/* Represents the contents of a file cpplib has read in. */
struct cpp_buffer
{
/* The directory of the this buffer's file. Its NAME member is not
allocated, so we don't need to worry about freeing it. */
struct search_path dir;
+
+ /* Used for buffer overlays by cpptrad.c. */
+ const uchar *saved_cur, *saved_rlimit;
};
/* A cpp_reader encapsulates the "state" of a pre-processor run.
/* Top of buffer stack. */
cpp_buffer *buffer;
+ /* Overlaid buffer (can be different after processing #include). */
+ cpp_buffer *overlaid_buffer;
+
/* Lexer state. */
struct lexer_state state;
tokenrun base_run, *cur_run;
unsigned int lookaheads;
- /* Non-zero prevents the lexer from re-using the token runs. */
+ /* Nonzero prevents the lexer from re-using the token runs. */
unsigned int keep_tokens;
/* Error counter for exit code. */
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;
+ /* Macros on or after this line are warned about if unused. */
+ unsigned int first_unused_line;
+
+ /* Date and time text. Calculated together if either is requested. */
+ const uchar *date;
+ const uchar *time;
/* EOF token, and a token forcing paste avoidance. */
cpp_token avoid_paste;
cpp_token eof;
- /* Opaque handle to the dependencies of mkdeps.c. Used by -M etc. */
+ /* Opaque handle to the dependencies of mkdeps.c. */
struct deps *deps;
/* Obstack holding all macro hash nodes. This never shrinks.
/* Call backs. */
struct cpp_callbacks cb;
- /* Identifier hash table. */
+ /* Identifier hash table. */
struct ht *hash_table;
+ /* Expression parser stack. */
+ struct op *op_stack, *op_limit;
+
/* User visible options. */
struct cpp_options opts;
preprocessor. */
struct spec_nodes spec_nodes;
- /* Whether to print our version number. Done this way so
- we don't get it twice for -v -version. */
- unsigned char print_version;
+ /* Used when doing preprocessed output. */
+ struct printer print;
/* Whether cpplib owns the hashtable. */
unsigned char our_hashtable;
+
+ /* Traditional preprocessing output buffer (a logical line). */
+ struct
+ {
+ uchar *base;
+ uchar *limit;
+ uchar *cur;
+ unsigned int first_line;
+ } out;
+
+ /* Used to save the original line number during traditional
+ preprocessing. */
+ unsigned int saved_line;
};
/* Character classes. Based on the more primitive macros in safe-ctype.h.
/* Macros. */
-#define CPP_PRINT_DEPS(PFILE) CPP_OPTION (PFILE, print_deps)
#define CPP_IN_SYSTEM_HEADER(PFILE) ((PFILE)->map && (PFILE)->map->sysp)
#define CPP_PEDANTIC(PF) CPP_OPTION (PF, pedantic)
#define CPP_WTRADITIONAL(PF) CPP_OPTION (PF, warn_traditional)
/* In cppmacro.c */
extern void _cpp_free_definition PARAMS ((cpp_hashnode *));
-extern int _cpp_create_definition PARAMS ((cpp_reader *, cpp_hashnode *));
+extern bool _cpp_create_definition PARAMS ((cpp_reader *, cpp_hashnode *));
extern void _cpp_pop_context PARAMS ((cpp_reader *));
-
+extern void _cpp_push_text_context PARAMS ((cpp_reader *, cpp_hashnode *,
+ const uchar *, size_t));
+extern bool _cpp_save_parameter PARAMS ((cpp_reader *, cpp_macro *,
+ cpp_hashnode *));
+extern bool _cpp_arguments_ok PARAMS ((cpp_reader *, cpp_macro *,
+ const cpp_hashnode *,
+ unsigned int));
+extern const uchar *_cpp_builtin_macro_text PARAMS ((cpp_reader *,
+ cpp_hashnode *));
+int _cpp_warn_if_unused_macro PARAMS ((cpp_reader *, cpp_hashnode *,
+ void *));
/* In cpphash.c */
extern void _cpp_init_hashtable PARAMS ((cpp_reader *, hash_table *));
extern void _cpp_destroy_hashtable PARAMS ((cpp_reader *));
struct include_file *));
/* In cppexp.c */
-extern int _cpp_parse_expr PARAMS ((cpp_reader *));
+extern bool _cpp_parse_expr PARAMS ((cpp_reader *));
+extern struct op *_cpp_expand_op_stack PARAMS ((cpp_reader *));
/* In cpplex.c */
extern cpp_token *_cpp_temp_token PARAMS ((cpp_reader *));
extern void _cpp_maybe_push_include_file PARAMS ((cpp_reader *));
/* In cpplib.c */
-extern int _cpp_test_assertion PARAMS ((cpp_reader *, int *));
+extern int _cpp_test_assertion PARAMS ((cpp_reader *, unsigned int *));
extern int _cpp_handle_directive PARAMS ((cpp_reader *, int));
extern void _cpp_define_builtin PARAMS ((cpp_reader *, const char *));
extern void _cpp_do__Pragma PARAMS ((cpp_reader *));
unsigned int, unsigned int));
extern void _cpp_pop_buffer PARAMS ((cpp_reader *));
+/* In cpptrad.c. */
+extern bool _cpp_read_logical_line_trad PARAMS ((cpp_reader *));
+extern void _cpp_overlay_buffer PARAMS ((cpp_reader *pfile, const uchar *,
+ size_t));
+extern void _cpp_remove_overlay PARAMS ((cpp_reader *));
+extern bool _cpp_create_trad_definition PARAMS ((cpp_reader *, cpp_macro *));
+extern bool _cpp_expansions_different_trad PARAMS ((const cpp_macro *,
+ const cpp_macro *));
+extern uchar *_cpp_copy_replacement_text PARAMS ((const cpp_macro *, uchar *));
+extern size_t _cpp_replacement_text_len PARAMS ((const cpp_macro *));
+
/* Utility routines and macros. */
#define DSC(str) (const uchar *)str, sizeof str - 1
#define xnew(T) (T *) xmalloc (sizeof(T))
/* These are inline functions instead of macros so we can get type
checking. */
-typedef unsigned char uchar;
-#define U (const uchar *) /* Intended use: U"string" */
-
static inline int ustrcmp PARAMS ((const uchar *, const uchar *));
static inline int ustrncmp PARAMS ((const uchar *, const uchar *,
size_t));
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