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cppexp.c (parse_assertion): Supply extra argument to _cpp_init_toklist.

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* cppexp.c (parse_assertion): Supply extra argument to
	_cpp_init_toklist.
	* cpplib.c (do_assert, do_unassert): Similarly.
	* cpphash.h (_cpp_init_toklist) Update.
	(_cpp_expand_token_space): New.
	(DUMMY_TOKEN, NO_DUMMY_TOKEN): New.
	* cpplex.c (_cpp_init_toklist): New argument.
	(parse_string2): New argument multiline_ok.
	(spell_token): Take a const cpp_token *.
	(INIT_NAME): Replace with INIT_TOKEN_NAME.  Update tokens_used.
	(SPELL_ macros): Replace with enum.
	(expand_token_space): Replace with _cpp_expand_token_space.
	Take COUNT argument.
	(IS_DIRECTIVE): Update.
	(_cpp_lex_line): Update token structure before parsing number.
	Don't assume start at beginning of token list.
	(save_comment): Use INIT_TOKEN_NAME.

From-SVN: r34214
This commit is contained in:
Neil Booth 2000-05-27 23:19:56 +00:00 • committed by Neil Booth
parent f45c9d956f
commit d1d9a6bd66
5 changed files with 132 additions and 75 deletions
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20
gcc/ChangeLog
View file

@ -1,3 +1,23 @@
2000-05-28 Neil Booth <NeilB@earthling.net>
* cppexp.c (parse_assertion): Supply extra argument to
_cpp_init_toklist.
* cpplib.c (do_assert, do_unassert): Similarly.
* cpphash.h (_cpp_init_toklist) Update.
(_cpp_expand_token_space): New.
(DUMMY_TOKEN, NO_DUMMY_TOKEN): New.
* cpplex.c (_cpp_init_toklist): New argument.
(parse_string2): New argument multiline_ok.
(spell_token): Take a const cpp_token *.
(INIT_NAME): Replace with INIT_TOKEN_NAME. Update tokens_used.
(SPELL_ macros): Replace with enum.
(expand_token_space): Replace with _cpp_expand_token_space.
Take COUNT argument.
(IS_DIRECTIVE): Update.
(_cpp_lex_line): Update token structure before parsing number.
Don't assume start at beginning of token list.
(save_comment): Use INIT_TOKEN_NAME.
2000-05-27 Zack Weinberg <zack@wolery.cumb.org>
* configure.in (stage1_warn_cflags): Add -Wstrict-prototypes

2
gcc/cppexp.c
View file

@ -423,7 +423,7 @@ parse_assertion (pfile)
if (_cpp_get_directive_token (pfile) != CPP_OPEN_PAREN)
CPP_ICE ("impossible token, expecting ( in parse_assertion");
_cpp_init_toklist (&query);
_cpp_init_toklist (&query, NO_DUMMY_TOKEN);
specific = 1;
if (_cpp_scan_until (pfile, &query, CPP_CLOSE_PAREN) != CPP_CLOSE_PAREN)
SYNTAX_ERROR ("missing close paren on assertion answer");

8
gcc/cpphash.h
View file

@ -218,6 +218,10 @@ extern unsigned char _cpp_IStable[256];
#define ADJACENT_TO_MARK(PFILE) \
(CPP_BUFFER(PFILE)->cur - CPP_BUFFER(PFILE)->mark == 1)
/* Flags for _cpp_init_toklist. */
#define DUMMY_TOKEN 0
#define NO_DUMMY_TOKEN 1
/* In cpphash.c */
extern unsigned int _cpp_calc_hash PARAMS ((const U_CHAR *, size_t));
extern HASHNODE *_cpp_lookup PARAMS ((cpp_reader *,
@ -260,7 +264,7 @@ extern enum cpp_ttype _cpp_get_define_token
PARAMS ((cpp_reader *));
extern enum cpp_ttype _cpp_scan_until PARAMS ((cpp_reader *, cpp_toklist *,
enum cpp_ttype));
extern void _cpp_init_toklist PARAMS ((cpp_toklist *));
extern void _cpp_init_toklist PARAMS ((cpp_toklist *, int));
extern void _cpp_clear_toklist PARAMS ((cpp_toklist *));
extern void _cpp_free_toklist PARAMS ((cpp_toklist *));
extern void _cpp_slice_toklist PARAMS ((cpp_toklist *,
@ -271,7 +275,7 @@ extern int _cpp_equiv_tokens PARAMS ((const cpp_token *,
const cpp_token *));
extern int _cpp_equiv_toklists PARAMS ((const cpp_toklist *,
const cpp_toklist *));
extern void _cpp_expand_token_space PARAMS ((cpp_toklist *, unsigned int));
/* In cpplib.c */
extern int _cpp_handle_directive PARAMS ((cpp_reader *));

135
gcc/cpplex.c
View file

@ -54,7 +54,6 @@ static void output_line_command PARAMS ((cpp_reader *, cpp_printer *,
static void bump_column PARAMS ((cpp_printer *, unsigned int,
unsigned int));
static void expand_name_space PARAMS ((cpp_toklist *, unsigned int));
static void expand_token_space PARAMS ((cpp_toklist *));
static void pedantic_whitespace PARAMS ((cpp_reader *, U_CHAR *,
unsigned int));
@ -75,7 +74,7 @@ static void skip_whitespace PARAMS ((cpp_reader *, int));
static void parse_name PARAMS ((cpp_reader *, cpp_toklist *, cpp_name *));
static void parse_number PARAMS ((cpp_reader *, cpp_toklist *, cpp_name *));
static void parse_string2 PARAMS ((cpp_reader *, cpp_toklist *, cpp_name *,
unsigned int));
unsigned int, int));
static int trigraph_ok PARAMS ((cpp_reader *, const unsigned char *));
static void save_comment PARAMS ((cpp_toklist *, const unsigned char *,
unsigned int, unsigned int, unsigned int));
@ -83,18 +82,18 @@ void _cpp_lex_line PARAMS ((cpp_reader *, cpp_toklist *));
static void _cpp_output_list PARAMS ((cpp_reader *, cpp_toklist *));
static unsigned char * spell_token PARAMS ((cpp_reader *, cpp_token *,
static unsigned char * spell_token PARAMS ((cpp_reader *, const cpp_token *,
unsigned char *, int));
typedef unsigned int (* speller) PARAMS ((unsigned char *, cpp_toklist *,
cpp_token *));
/* Macros on a cpp_name. */
#define INIT_NAME(list, name) \
do {(name).len = 0; \
(name).text = (list)->namebuf + (list)->name_used;} while (0)
#define IS_DIRECTIVE(list) (TOK_TYPE (list, 0) == CPP_HASH)
#define INIT_TOKEN_NAME(list, token) \
do {(token)->val.name.len = 0; \
(token)->val.name.text = (list)->namebuf + (list)->name_used; \
(list)->tokens_used = token - (list)->tokens + 1; \
} while (0)
/* Maybe put these in the ISTABLE eventually. */
#define IS_HSPACE(c) ((c) == ' ' || (c) == '\t')
@ -128,11 +127,14 @@ typedef unsigned int (* speller) PARAMS ((unsigned char *, cpp_toklist *,
/* Order here matters. Those beyond SPELL_NONE store their spelling
in the token list, and it's length in the token->val.name.len. */
#define SPELL_OPERATOR 0
#define SPELL_CHAR 2 /* FIXME: revert order after transition. */
#define SPELL_NONE 1
#define SPELL_IDENT 3
#define SPELL_STRING 4
enum spell_type
{
SPELL_OPERATOR = 0,
SPELL_NONE,
SPELL_CHAR, /* FIXME: revert order of NONE and CHAR after transition. */
SPELL_IDENT,
SPELL_STRING
};
#define T(e, s) {SPELL_OPERATOR, (const U_CHAR *) s},
#define I(e, s) {SPELL_IDENT, s},
@ -142,7 +144,7 @@ typedef unsigned int (* speller) PARAMS ((unsigned char *, cpp_toklist *,
static const struct token_spelling
{
U_CHAR type;
ENUM_BITFIELD(spell_type) type : CHAR_BIT;
const U_CHAR *spelling;
} token_spellings [N_TTYPES + 1] = {TTYPE_TABLE {0, 0} };
@ -518,7 +520,8 @@ cpp_file_buffer (pfile)
/* Token-buffer helper functions. */
/* Expand a token list's string space. */
/* Expand a token list's string space. It is *vital* that
list->tokens_used is correct, to get pointer fix-up right. */
static void
expand_name_space (list, len)
cpp_toklist *list;
@ -542,25 +545,43 @@ expand_name_space (list, len)
}
/* Expand the number of tokens in a list. */
static void
expand_token_space (list)
void
_cpp_expand_token_space (list, count)
cpp_toklist *list;
unsigned int count;
{
list->tokens_cap *= 2;
unsigned int n;
list->tokens_cap += count;
n = list->tokens_cap;
if (list->flags & LIST_OFFSET)
list->tokens--;
list->tokens--, n++;
list->tokens = (cpp_token *)
xrealloc (list->tokens, (list->tokens_cap + 1) * sizeof (cpp_token));
xrealloc (list->tokens, n * sizeof (cpp_token));
if (list->flags & LIST_OFFSET)
list->tokens++; /* Skip the dummy. */
}
/* Initialize a token list. We allocate an extra token in front of
the token list, as this allows us to always peek at the previous
token without worrying about underflowing the list. */
/* Initialize a token list. If flags is DUMMY_TOKEN, we allocate
an extra token in front of the token list, as this allows the lexer
to always peek at the previous token without worrying about
underflowing the list, and some initial space. Otherwise, no
token- or name-space is allocated, and there is no dummy token. */
void
_cpp_init_toklist (list)
_cpp_init_toklist (list, flags)
cpp_toklist *list;
int flags;
{
/* We malloc zero bytes because we may want to realloc later, and
some old implementations don't like realloc-ing a null pointer. */
if (flags == NO_DUMMY_TOKEN)
{
list->tokens_cap = 0;
list->tokens = (cpp_token *) malloc (0);
list->name_cap = 0;
list->flags = 0;
}
else
{
/* Initialize token space. Put a dummy token before the start
that will fail matches. */
@ -572,13 +593,16 @@ _cpp_init_toklist (list)
/* Initialize name space. */
list->name_cap = 1024;
list->flags = LIST_OFFSET;
}
/* Allocate name space. */
list->namebuf = (unsigned char *) xmalloc (list->name_cap);
/* Only create a comment space on demand. */
list->comments_cap = 0;
list->comments = 0;
list->flags = LIST_OFFSET;
_cpp_clear_toklist (list);
}
@ -777,7 +801,7 @@ _cpp_scan_until (pfile, list, stop)
continue;
if (list->tokens_used >= list->tokens_cap)
expand_token_space (list);
_cpp_expand_token_space (list, 256);
if (list->name_used + len >= list->name_cap)
expand_name_space (list, list->name_used + len + 1 - list->name_cap);
@ -2194,7 +2218,7 @@ _cpp_init_input_buffer (pfile)
U_CHAR *tmp;
init_chartab ();
_cpp_init_toklist (&pfile->directbuf);
_cpp_init_toklist (&pfile->directbuf, NO_DUMMY_TOKEN);
/* Determine the appropriate size for the input buffer. Normal C
source files are smaller than eight K. */
@ -2702,11 +2726,12 @@ parse_number (pfile, list, name)
allowed, except for within directives. */
static void
parse_string2 (pfile, list, name, terminator)
parse_string2 (pfile, list, name, terminator, multiline_ok)
cpp_reader *pfile;
cpp_toklist *list;
cpp_name *name;
unsigned int terminator;
int multiline_ok;
{
cpp_buffer *buffer = pfile->buffer;
register const unsigned char *cur = buffer->cur;
@ -2766,7 +2791,7 @@ parse_string2 (pfile, list, name, terminator)
extend over multiple lines. In Standard C, neither
may strings. We accept multiline strings as an
extension, but not in directives. */
if (terminator != '"' || IS_DIRECTIVE (list))
if (!multiline_ok)
goto unterminated;
cur++; /* Move forwards again. */
@ -2857,14 +2882,16 @@ save_comment (list, from, len, tok_no, type)
if (list->name_used + len > list->name_cap)
expand_name_space (list, len);
buffer = list->namebuf + list->name_used;
comment = &list->comments[list->comments_used++];
INIT_TOKEN_NAME (list, comment);
comment->type = CPP_COMMENT;
comment->aux = tok_no;
comment->val.name.len = len;
comment->val.name.text = buffer;
buffer = list->namebuf + list->name_used;
list->name_used += len;
/* Copy the comment. */
if (type == '*')
{
*buffer++ = '/';
@ -2875,9 +2902,7 @@ save_comment (list, from, len, tok_no, type)
*buffer++ = type;
*buffer++ = type;
}
memcpy (buffer, from, len - COMMENT_START_LEN);
list->name_used += len;
}
/*
@ -2894,6 +2919,8 @@ save_comment (list, from, len, tok_no, type)
* even when enabled.
*/
#define IS_DIRECTIVE() (list->tokens[first_token].type == CPP_HASH)
void
_cpp_lex_line (pfile, list)
cpp_reader *pfile;
@ -2903,6 +2930,7 @@ _cpp_lex_line (pfile, list)
cpp_buffer *buffer = pfile->buffer;
register const unsigned char *cur = buffer->cur;
unsigned char flags = 0;
unsigned int first_token = list->tokens_used;
pfile->col_adjust = 0;
expanded:
@ -2920,7 +2948,7 @@ _cpp_lex_line (pfile, list)
{
/* Step back to get the null warning and tab correction. */
buffer->cur = cur - 1;
skip_whitespace (pfile, IS_DIRECTIVE (list));
skip_whitespace (pfile, IS_DIRECTIVE ());
cur = buffer->cur;
flags = PREV_WHITESPACE;
@ -2938,27 +2966,31 @@ _cpp_lex_line (pfile, list)
{
case '0': case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9':
cur--; /* Backup character. */
if (PREV_TOKEN_TYPE == CPP_DOT && IMMED_TOKEN ())
{
/* Prepend an immediately previous CPP_DOT token. */
int prev_dot;
cur--; /* Backup character. */
prev_dot = PREV_TOKEN_TYPE == CPP_DOT && IMMED_TOKEN ();
if (prev_dot)
cur_token--;
INIT_TOKEN_NAME (list, cur_token);
/* Prepend an immediately previous CPP_DOT token. */
if (prev_dot)
{
if (list->name_cap == list->name_used)
auto_expand_name_space (list);
cur_token->val.name.len = 1;
cur_token->val.name.text = list->namebuf + list->name_used;
list->namebuf[list->name_used++] = '.';
}
else
INIT_NAME (list, cur_token->val.name);
continue_number:
cur_token->type = CPP_NUMBER; /* Before parse_number. */
buffer->cur = cur;
parse_number (pfile, list, &cur_token->val.name);
cur = buffer->cur;
PUSH_TOKEN (CPP_NUMBER); /* Number not yet interpreted. */
cur_token++;
}
break;
letter:
@ -2974,7 +3006,7 @@ _cpp_lex_line (pfile, list)
case 'S': case 'T': case 'U': case 'V': case 'W': case 'X':
case 'Y': case 'Z':
cur--; /* Backup character. */
INIT_NAME (list, cur_token->val.name);
INIT_TOKEN_NAME (list, cur_token);
cur_token->type = CPP_NAME; /* Identifier, macro etc. */
continue_name:
@ -2983,7 +3015,7 @@ _cpp_lex_line (pfile, list)
cur = buffer->cur;
/* Find handler for newly created / extended directive. */
if (IS_DIRECTIVE (list) && cur_token == &list->tokens[1])
if (IS_DIRECTIVE () && cur_token == &list->tokens[first_token + 1])
_cpp_check_directive (list, cur_token);
cur_token++;
break;
@ -3005,9 +3037,10 @@ _cpp_lex_line (pfile, list)
do_parse_string:
/* Here c is one of ' " or >. */
INIT_NAME (list, cur_token->val.name);
INIT_TOKEN_NAME (list, cur_token);
buffer->cur = cur;
parse_string2 (pfile, list, &cur_token->val.name, c);
parse_string2 (pfile, list, &cur_token->val.name, c,
c == '"' && !IS_DIRECTIVE());
cur = buffer->cur;
cur_token++;
break;
@ -3325,14 +3358,14 @@ _cpp_lex_line (pfile, list)
if (cur_token == token_limit)
{
list->tokens_used = cur_token - list->tokens;
expand_token_space (list);
_cpp_expand_token_space (list, 256);
goto expanded;
}
cur_token->type = CPP_EOF;
cur_token->flags = flags;
if (cur_token != &list->tokens[0])
if (cur_token != &list->tokens[first_token])
{
/* Next call back will get just a CPP_EOF. */
buffer->cur = cur;
@ -3369,7 +3402,7 @@ _cpp_lex_line (pfile, list)
static unsigned char *
spell_token (pfile, token, buffer, whitespace)
cpp_reader *pfile; /* Would be nice to be rid of this... */
cpp_token *token;
const cpp_token *token;
unsigned char *buffer;
int whitespace;
{
@ -3438,7 +3471,7 @@ _cpp_lex_file (pfile)
init_trigraph_map ();
list = (cpp_toklist *) xmalloc (sizeof (cpp_toklist));
_cpp_init_toklist (list);
_cpp_init_toklist (list, DUMMY_TOKEN);
for (;;)
{

4
gcc/cpplib.c
View file

@ -1550,7 +1550,7 @@ do_assert (pfile)
ERROR ("missing token-sequence in #assert");
pred = (struct predicate *) xmalloc (sizeof (struct predicate));
_cpp_init_toklist (&pred->answer);
_cpp_init_toklist (&pred->answer, NO_DUMMY_TOKEN);
if (_cpp_scan_until (pfile, &pred->answer, CPP_CLOSE_PAREN)
!= CPP_CLOSE_PAREN)
@ -1626,7 +1626,7 @@ do_unassert (pfile)
if (type == CPP_OPEN_PAREN)
{
specific = 1;
_cpp_init_toklist (&ans);
_cpp_init_toklist (&ans, NO_DUMMY_TOKEN);
if (_cpp_scan_until (pfile, &ans, CPP_CLOSE_PAREN)
!= CPP_CLOSE_PAREN)