141 lines
4.5 KiB
C
141 lines
4.5 KiB
C
/* MD reader definitions.
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Copyright (C) 1987-2014 Free Software Foundation, Inc.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 3, or (at your option) any later
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version.
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING3. If not see
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<http://www.gnu.org/licenses/>. */
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#include "obstack.h"
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#include "hashtab.h"
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/* Holds one symbol or number in the .md file. */
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struct md_name {
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/* The name as it appeared in the .md file. Names are syntactically
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limited to the length of this buffer. */
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char buffer[256];
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/* The name that should actually be used by the generator programs.
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This is an expansion of NAME, after things like constant substitution. */
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char *string;
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};
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/* This structure represents a constant defined by define_constant,
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define_enum, or such-like. */
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struct md_constant {
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/* The name of the constant. */
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char *name;
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/* The string to which the constants expands. */
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char *value;
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/* If the constant is associated with a enumeration, this field
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points to that enumeration, otherwise it is null. */
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struct enum_type *parent_enum;
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};
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/* This structure represents one value in an enum_type. */
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struct enum_value {
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/* The next value in the enum, or null if this is the last. */
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struct enum_value *next;
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/* The name of the value as it appears in the .md file. */
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char *name;
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/* The definition of the related C value. */
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struct md_constant *def;
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};
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/* This structure represents an enum defined by define_enum or the like. */
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struct enum_type {
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/* The C name of the enumeration. */
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char *name;
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/* True if this is an md-style enum (DEFINE_ENUM) rather than
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a C-style enum (DEFINE_C_ENUM). */
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bool md_p;
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/* The values of the enumeration. There is always at least one. */
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struct enum_value *values;
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/* A pointer to the null terminator in VALUES. */
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struct enum_value **tail_ptr;
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/* The number of enumeration values. */
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unsigned int num_values;
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};
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/* A callback that handles a single .md-file directive, up to but not
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including the closing ')'. It takes two arguments: the line number on
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which the directive started, and the name of the directive. The next
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unread character is the optional space after the directive name. */
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typedef void (*directive_handler_t) (int, const char *);
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extern const char *in_fname;
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extern FILE *read_md_file;
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extern int read_md_lineno;
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extern const char *read_md_filename;
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extern struct obstack string_obstack;
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extern void (*include_callback) (const char *);
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/* Read the next character from the MD file. */
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static inline int
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read_char (void)
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{
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int ch;
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ch = getc (read_md_file);
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if (ch == '\n')
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read_md_lineno++;
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return ch;
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}
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/* Put back CH, which was the last character read from the MD file. */
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static inline void
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unread_char (int ch)
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{
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if (ch == '\n')
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read_md_lineno--;
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ungetc (ch, read_md_file);
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}
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extern hashval_t leading_string_hash (const void *);
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extern int leading_string_eq_p (const void *, const void *);
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extern void copy_md_ptr_loc (const void *, const void *);
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extern void print_md_ptr_loc (const void *);
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extern void fprint_md_ptr_loc (FILE *, const void *);
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extern const char *join_c_conditions (const char *, const char *);
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extern void print_c_condition (const char *);
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extern void fprint_c_condition (FILE *, const char *);
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extern void message_with_line (int, const char *, ...) ATTRIBUTE_PRINTF_2;
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extern void error_with_line (int, const char *, ...) ATTRIBUTE_PRINTF_2;
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extern void fatal_with_file_and_line (const char *, ...)
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ATTRIBUTE_PRINTF_1 ATTRIBUTE_NORETURN;
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extern void fatal_expected_char (int, int) ATTRIBUTE_NORETURN;
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extern int read_skip_spaces (void);
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extern void read_name (struct md_name *);
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extern char *read_quoted_string (void);
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extern char *read_string (int);
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extern void read_skip_construct (int, int);
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extern int n_comma_elts (const char *);
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extern const char *scan_comma_elt (const char **);
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extern void upcase_string (char *);
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extern void traverse_md_constants (htab_trav, void *);
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extern void traverse_enum_types (htab_trav, void *);
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extern struct enum_type *lookup_enum_type (const char *);
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extern bool read_md_files (int, char **, bool (*) (const char *),
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directive_handler_t);
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