AuroraMiddleware/gtk2
1
0
Fork 0
forked from AuroraMiddleware/gtk
Code Issues Pull Requests Projects Releases Wiki Activity
7c21169e72
gtk2/glib/gscanner.c

1136 lines
26 KiB
C
Raw Blame History

/* GLIB - Library of useful routines for C programming
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* GScanner: Flexible lexical scanner for general purpose.
* Copyright (C) 1997 Tim Janik
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#define __gscanner_c__
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include "glib.h"
/* --- defines --- */
#define to_lower(c) ( \
(guchar) ( \
( (((guchar)(c))>='A' && ((guchar)(c))<='Z') * ('a'-'A') ) + \
( (((guchar)(c))>=192 && ((guchar)(c))<=214) * (224-192) ) + \
( (((guchar)(c))>=216 && ((guchar)(c))<=222) * (248-216) ) + \
((guchar)(c)) \
) \
)
/* --- typedefs --- */
typedef struct _GScannerHashVal GScannerHashVal;
struct _GScannerHashVal
{
gchar *key;
gpointer value;
};
/* --- variables --- */
static GScannerConfig g_scanner_config_template =
{
(
" \t\n"
) /* cset_skip_characters */,
(
G_CSET_a_2_z
"_"
G_CSET_A_2_Z
) /* cset_identifier_first */,
(
G_CSET_a_2_z
"_0123456789"
G_CSET_A_2_Z
G_CSET_LATINS
G_CSET_LATINC
) /* cset_identifier_nth */,
( "#\n" ) /* cpair_comment_single */,
FALSE /* case_sensitive */,
TRUE /* skip_comment_multi */,
TRUE /* skip_comment_single */,
TRUE /* scan_comment_multi */,
TRUE /* scan_identifier */,
FALSE /* scan_identifier_1char */,
FALSE /* scan_identifier_NULL */,
TRUE /* scan_symbols */,
FALSE /* scan_binary */,
TRUE /* scan_octal */,
TRUE /* scan_float */,
TRUE /* scan_hex */,
FALSE /* scan_hex_dollar */,
TRUE /* scan_string_sq */,
TRUE /* scan_string_dq */,
TRUE /* numbers_2_int */,
FALSE /* int_2_float */,
FALSE /* identifier_2_string */,
TRUE /* char_2_token */,
FALSE /* symbol_2_token */,
};
/* --- prototypes --- */
static GScannerHashVal* g_scanner_lookup_internal (GScanner *scanner,
const gchar *symbol);
static void g_scanner_get_token_ll (GScanner *scanner,
GTokenType *token_p,
GValue *value_p,
guint *line_p,
guint *position_p);
static void g_scanner_get_token_i (GScanner *scanner,
GTokenType *token_p,
GValue *value_p,
guint *line_p,
guint *position_p);
static void g_scanner_free_value (GTokenType *token_p,
GValue *value_p);
static __inline__
gint g_scanner_char_2_num (guchar c,
guchar base);
static guchar g_scanner_peek_next_char(GScanner *scanner);
static guchar g_scanner_get_char (GScanner *scanner,
guint *line_p,
guint *position_p);
/* --- functions --- */
static gint
g_scanner_char_2_num (guchar c,
guchar base)
{
if (c >= '0' && c <= '9')
c -= '0';
else if (c >= 'A' && c <= 'Z')
c -= 'A' - 10;
else if (c >= 'a' && c <= 'z')
c -= 'a' - 10;
else
return -1;
if (c < base)
return c;
return -1;
}
GScanner*
g_scanner_new (GScannerConfig *config_templ)
{
register GScanner *scanner;
if (!config_templ)
config_templ = &g_scanner_config_template;
scanner = g_new0 (GScanner, 1);
scanner->user_data = NULL;
scanner->input_name = NULL;
scanner->parse_errors = 0;
scanner->max_parse_errors = 0;
scanner->config = g_new0 (GScannerConfig, 1);
scanner->config->case_sensitive = config_templ->case_sensitive;
scanner->config->cset_skip_characters = config_templ->cset_skip_characters;
scanner->config->cset_identifier_first= config_templ->cset_identifier_first;
scanner->config->cset_identifier_nth = config_templ->cset_identifier_nth;
scanner->config->cpair_comment_single = config_templ->cpair_comment_single;
scanner->config->skip_comment_multi = config_templ->skip_comment_multi;
scanner->config->skip_comment_single = config_templ->skip_comment_single;
scanner->config->scan_comment_multi = config_templ->scan_comment_multi;
scanner->config->scan_identifier = config_templ->scan_identifier;
scanner->config->scan_identifier_1char= config_templ->scan_identifier_1char;
scanner->config->scan_identifier_NULL = config_templ->scan_identifier_NULL;
scanner->config->scan_symbols = config_templ->scan_symbols;
scanner->config->scan_binary = config_templ->scan_binary;
scanner->config->scan_octal = config_templ->scan_octal;
scanner->config->scan_float = config_templ->scan_float;
scanner->config->scan_hex = config_templ->scan_hex;
scanner->config->scan_hex_dollar = config_templ->scan_hex_dollar;
scanner->config->scan_string_sq = config_templ->scan_string_sq;
scanner->config->scan_string_dq = config_templ->scan_string_dq;
scanner->config->numbers_2_int = config_templ->numbers_2_int;
scanner->config->int_2_float = config_templ->int_2_float;
scanner->config->identifier_2_string = config_templ->identifier_2_string;
scanner->config->char_2_token = config_templ->char_2_token;
scanner->config->symbol_2_token = config_templ->symbol_2_token;
scanner->token = G_TOKEN_NONE;
scanner->value.v_int = 0;
scanner->line = 1;
scanner->position = 0;
scanner->next_token = G_TOKEN_NONE;
scanner->next_value.v_int = 0;
scanner->next_line = 1;
scanner->next_position = 0;
scanner->symbol_table = g_hash_table_new (g_string_hash, g_string_equal);
scanner->text = NULL;
scanner->text_len = 0;
scanner->input_fd = -1;
scanner->peeked_char = -1;
return scanner;
}
void
g_scanner_destroy (GScanner *scanner)
{
g_return_if_fail (scanner != NULL);
g_hash_table_destroy (scanner->symbol_table);
g_scanner_free_value (&scanner->token, &scanner->value);
g_scanner_free_value (&scanner->next_token, &scanner->next_value);
g_free (scanner->config);
g_free (scanner);
}
void
g_scanner_input_file (GScanner *scanner,
gint input_fd)
{
g_return_if_fail (input_fd >= 0);
scanner->token = G_TOKEN_NONE;
scanner->value.v_int = 0;
scanner->line = 1;
scanner->position = 0;
scanner->next_token = G_TOKEN_NONE;
scanner->text = NULL;
scanner->text_len = 0;
scanner->input_fd = input_fd;
scanner->peeked_char = -1;
}
void
g_scanner_input_text (GScanner *scanner,
const gchar *text,
guint text_len)
{
g_return_if_fail (text != NULL);
scanner->token = G_TOKEN_NONE;
scanner->value.v_int = 0;
scanner->line = 1;
scanner->position = 0;
scanner->next_token = G_TOKEN_NONE;
scanner->text = text;
scanner->text_len = text_len;
scanner->input_fd = -1;
scanner->peeked_char = -1;
}
void
g_scanner_add_symbol (GScanner *scanner,
const gchar *symbol,
gpointer value)
{
register GScannerHashVal *hash_val;
g_return_if_fail (symbol != NULL);
g_return_if_fail (scanner != NULL);
hash_val = g_scanner_lookup_internal (scanner, symbol);
if (!hash_val)
{
hash_val = g_new (GScannerHashVal, 1);
hash_val->key = g_strdup (symbol);
hash_val->value = value;
if (!scanner->config->case_sensitive)
{
register guint i, l;
l = strlen (hash_val->key);
for (i = 0; i < l; i++)
hash_val->key[i] = to_lower (hash_val->key[i]);
}
g_hash_table_insert (scanner->symbol_table, hash_val->key, hash_val);
}
else
hash_val->value = value;
}
gpointer
g_scanner_lookup_symbol (GScanner *scanner,
const gchar *symbol)
{
register GScannerHashVal *hash_val;
g_return_val_if_fail (scanner != NULL, NULL);
if (!symbol)
return NULL;
hash_val = g_scanner_lookup_internal (scanner, symbol);
if (hash_val)
return hash_val->value;
else
return NULL;
}
void
g_scanner_remove_symbol (GScanner *scanner,
const gchar *symbol)
{
register GScannerHashVal *hash_val;
hash_val = g_scanner_lookup_internal (scanner, symbol);
if (hash_val)
{
g_hash_table_remove (scanner->symbol_table, hash_val->key);
g_free (hash_val->key);
g_free (hash_val);
}
}
GTokenType
g_scanner_peek_next_token (GScanner *scanner)
{
g_return_val_if_fail (scanner != NULL, G_TOKEN_EOF);
if (scanner->next_token == G_TOKEN_NONE)
{
scanner->next_line = scanner->line;
scanner->next_position = scanner->position;
g_scanner_get_token_i (scanner,
&scanner->next_token,
&scanner->next_value,
&scanner->next_line,
&scanner->next_position);
}
return scanner->next_token;
}
GTokenType
g_scanner_get_next_token (GScanner *scanner)
{
g_return_val_if_fail (scanner != NULL, G_TOKEN_EOF);
if (scanner->next_token != G_TOKEN_NONE)
{
g_scanner_free_value (&scanner->token, &scanner->value);
scanner->token = scanner->next_token;
scanner->value = scanner->next_value;
scanner->line = scanner->next_line;
scanner->position = scanner->next_position;
scanner->next_token = G_TOKEN_NONE;
}
else
g_scanner_get_token_i (scanner,
&scanner->token,
&scanner->value,
&scanner->line,
&scanner->position);
return scanner->token;
}
GTokenType
g_scanner_cur_token (GScanner *scanner)
{
g_return_val_if_fail (scanner != NULL, G_TOKEN_EOF);
return scanner->token;
}
GValue
g_scanner_cur_value (GScanner *scanner)
{
register GValue v;
v.v_int = 0;
g_return_val_if_fail (scanner != NULL, v);
return scanner->value;
}
guint
g_scanner_cur_line (GScanner *scanner)
{
g_return_val_if_fail (scanner != NULL, 0);
return scanner->line;
}
guint
g_scanner_cur_position (GScanner *scanner)
{
g_return_val_if_fail (scanner != NULL, 0);
return scanner->position;
}
gboolean
g_scanner_eof (GScanner *scanner)
{
g_return_val_if_fail (scanner != NULL, TRUE);
return scanner->token == G_TOKEN_EOF;
}
static GScannerHashVal*
g_scanner_lookup_internal (GScanner *scanner,
const gchar *symbol)
{
register GScannerHashVal *hash_val;
if (!scanner->config->case_sensitive)
{
register gchar *buffer;
register guint i, l;
l = strlen (symbol);
buffer = g_new (gchar, l + 1);
for (i = 0; i < l; i++)
buffer[i] = to_lower (symbol[i]);
buffer[i] = 0;
hash_val = g_hash_table_lookup (scanner->symbol_table, buffer);
g_free (buffer);
}
else
hash_val = g_hash_table_lookup (scanner->symbol_table, (gchar*) symbol);
return hash_val;
}
static guchar
g_scanner_peek_next_char (GScanner *scanner)
{
guchar fchar;
if (scanner->text_len)
{
fchar = scanner->text[0];
}
else if (scanner->input_fd >= 0)
{
if (scanner->peeked_char < 0)
{
register gint count;
do
{
count = read (scanner->input_fd, &fchar, 1);
}
while (count == -1 &&
(errno == EINTR ||
errno == EAGAIN));
if (count != 1)
fchar = 0;
scanner->peeked_char = fchar;
}
else
fchar = scanner->peeked_char;
}
else
fchar = 0;
return fchar;
}
static guchar
g_scanner_get_char (GScanner *scanner,
guint *line_p,
guint *position_p)
{
guchar fchar;
if (scanner->text_len)
{
fchar = *(scanner->text++);
scanner->text_len--;
}
else if (scanner->input_fd >= 0)
{
if (scanner->peeked_char < 0)
{
register gint count;
do
{
count = read (scanner->input_fd, &fchar, 1);
}
while (count == -1 &&
(errno == EINTR ||
errno == EAGAIN));
if (count != 1 || fchar == 0)
{
fchar = 0;
scanner->peeked_char = 0;
}
}
else
{
fchar = scanner->peeked_char;
if (fchar)
scanner->peeked_char = -1;
}
}
else
fchar = 0;
if (fchar == '\n')
{
(*position_p) = 0;
(*line_p)++;
}
else if (fchar)
{
(*position_p)++;
}
return fchar;
}
static void
g_scanner_free_value (GTokenType *token_p,
GValue *value_p)
{
switch (*token_p)
{
case G_TOKEN_STRING:
case G_TOKEN_IDENTIFIER:
case G_TOKEN_IDENTIFIER_NULL:
case G_TOKEN_COMMENT_SINGLE:
case G_TOKEN_COMMENT_MULTI:
g_free (value_p->v_string);
break;
default:
break;
}
*token_p = G_TOKEN_NONE;
}
static void
g_scanner_get_token_i (GScanner *scanner,
GTokenType *token_p,
GValue *value_p,
guint *line_p,
guint *position_p)
{
do
{
g_scanner_free_value (token_p, value_p);
g_scanner_get_token_ll (scanner, token_p, value_p, line_p, position_p);
}
while (((*token_p > 0 && *token_p < 256) &&
strchr (scanner->config->cset_skip_characters, *token_p)) ||
(*token_p == G_TOKEN_CHAR &&
strchr (scanner->config->cset_skip_characters, value_p->v_char)) ||
(*token_p == G_TOKEN_COMMENT_MULTI &&
scanner->config->skip_comment_multi) ||
(*token_p == G_TOKEN_COMMENT_SINGLE &&
scanner->config->skip_comment_single));
switch (*token_p)
{
case G_TOKEN_IDENTIFIER:
if (scanner->config->identifier_2_string)
*token_p = G_TOKEN_STRING;
break;
case G_TOKEN_SYMBOL:
if (scanner->config->symbol_2_token)
*token_p = (GTokenType) value_p->v_symbol;
break;
case G_TOKEN_BINARY:
case G_TOKEN_OCTAL:
case G_TOKEN_HEX:
if (scanner->config->numbers_2_int)
*token_p = G_TOKEN_INT;
break;
default:
break;
}
if (*token_p == G_TOKEN_INT &&
scanner->config->int_2_float)
{
*token_p = G_TOKEN_FLOAT;
value_p->v_float = value_p->v_int;
}
errno = 0;
}
static void
g_scanner_get_token_ll (GScanner *scanner,
GTokenType *token_p,
GValue *value_p,
guint *line_p,
guint *position_p)
{
register GScannerConfig *config;
register gboolean in_comment_multi;
register gboolean in_comment_single;
register gboolean in_string_sq;
register gboolean in_string_dq;
static guchar ch;
register GTokenType token;
register GValue value;
register GString *gstring;
config = scanner->config;
(*value_p).v_int = 0;
if (scanner->token == G_TOKEN_EOF ||
(!scanner->text_len &&
(scanner->input_fd < 0 ||
scanner->peeked_char == 0)))
{
*token_p = G_TOKEN_EOF;
return;
}
in_comment_multi = FALSE;
in_comment_single = FALSE;
in_string_sq = FALSE;
in_string_dq = FALSE;
gstring = NULL;
do
{
ch = g_scanner_get_char (scanner, line_p, position_p);
value.v_int = 0;
token = G_TOKEN_NONE;
/* this is *evil*, but needed ;(
* we first check for identifier first character, because it
* might interfere with other key chars like slashes or numbers
*/
if (config->scan_identifier &&
ch && strchr (config->cset_identifier_first, ch))
goto identifier_precedence;
switch (ch)
{
register gboolean in_number;
static gchar *endptr;
case 0:
token = G_TOKEN_EOF;
(*position_p)++;
ch = 0;
break;
case '/':
if (!config->scan_comment_multi ||
g_scanner_peek_next_char (scanner) != '*')
goto default_case;
g_scanner_get_char (scanner, line_p, position_p);
token = G_TOKEN_COMMENT_MULTI;
in_comment_multi = TRUE;
gstring = g_string_new ("");
while ((ch = g_scanner_get_char (scanner, line_p, position_p)) != 0)
{
if (ch == '*' && g_scanner_peek_next_char (scanner) == '/')
{
g_scanner_get_char (scanner, line_p, position_p);
in_comment_multi = FALSE;
break;
}
else
gstring = g_string_append_c (gstring, ch);
}
ch = 0;
break;
case '\'':
if (!config->scan_string_sq)
goto default_case;
token = G_TOKEN_STRING;
in_string_sq = TRUE;
gstring = g_string_new ("");
while ((ch = g_scanner_get_char (scanner, line_p, position_p)) != 0)
{
if (ch == '\'')
{
in_string_sq = FALSE;
break;
}
else
gstring = g_string_append_c (gstring, ch);
}
ch = 0;
break;
case '"':
if (!config->scan_string_dq)
goto default_case;
token = G_TOKEN_STRING;
in_string_dq = TRUE;
gstring = g_string_new ("");
while ((ch = g_scanner_get_char (scanner, line_p, position_p)) != 0)
{
if (ch == '"')
{
in_string_dq = FALSE;
break;
}
else
{
if (ch == '\\')
{
ch = g_scanner_get_char (scanner, line_p, position_p);
switch (ch)
{
register guint i;
register guint fchar;
case 0:
break;
case '\\':
gstring = g_string_append_c (gstring, '\\');
break;
case 'n':
gstring = g_string_append_c (gstring, '\n');
break;
case 't':
gstring = g_string_append_c (gstring, '\t');
break;
case 'r':
gstring = g_string_append_c (gstring, '\r');
break;
case 'b':
gstring = g_string_append_c (gstring, '\b');
break;
case 'f':
gstring = g_string_append_c (gstring, '\f');
break;
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
i = ch - '0';
fchar = g_scanner_peek_next_char (scanner);
if (fchar >= '0' && fchar <= '7')
{
ch = g_scanner_get_char (scanner, line_p, position_p);
i= i * 8 + ch - '0';
fchar = g_scanner_peek_next_char (scanner);
if (fchar >= '0' && fchar <= '7')
{
ch = g_scanner_get_char (scanner, line_p, position_p);
i = i * 8 + ch - '0';
}
}
gstring = g_string_append_c (gstring, i);
break;
default:
gstring = g_string_append_c (gstring, ch);
break;
}
}
else
gstring = g_string_append_c (gstring, ch);
}
}
ch = 0;
break;
case '.':
if (!config->scan_float)
goto default_case;
token = G_TOKEN_FLOAT;
ch = g_scanner_get_char (scanner, line_p, position_p);
goto number_parsing;
case '$':
if (!config->scan_hex_dollar)
goto default_case;
token = G_TOKEN_HEX;
ch = g_scanner_get_char (scanner, line_p, position_p);
goto number_parsing;
case '0':
if (config->scan_octal)
token = G_TOKEN_OCTAL;
else
token = G_TOKEN_INT;
ch = g_scanner_peek_next_char (scanner);
if (config->scan_hex && (ch == 'x' || ch == 'X'))
{
token = G_TOKEN_HEX;
g_scanner_get_char (scanner, line_p, position_p);
ch = g_scanner_get_char (scanner, line_p, position_p);
if (ch == 0)
{
token = G_TOKEN_ERROR;
value.v_error = G_ERR_UNEXP_EOF;
(*position_p)++;
break;
}
if (g_scanner_char_2_num (ch, 16) < 0)
{
token = G_TOKEN_ERROR;
value.v_error = G_ERR_DIGIT_RADIX;
ch = 0;
break;
}
}
else if (config->scan_binary && (ch == 'b' || ch == 'B'))
{
token = G_TOKEN_BINARY;
g_scanner_get_char (scanner, line_p, position_p);
ch = g_scanner_get_char (scanner, line_p, position_p);
if (ch == 0)
{
token = G_TOKEN_ERROR;
value.v_error = G_ERR_UNEXP_EOF;
(*position_p)++;
break;
}
if (g_scanner_char_2_num (ch, 10) < 0)
{
token = G_TOKEN_ERROR;
value.v_error = G_ERR_NON_DIGIT_IN_CONST;
ch = 0;
break;
}
}
else
ch = '0';
/* fall through */
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
number_parsing:
if (token == G_TOKEN_NONE)
token = G_TOKEN_INT;
gstring = g_string_new ("");
gstring = g_string_append_c (gstring, ch);
in_number = TRUE;
while (in_number)
{
register gboolean is_E;
is_E = (ch == 'e' || ch == 'E') && token == G_TOKEN_FLOAT;
ch = g_scanner_peek_next_char (scanner);
if (g_scanner_char_2_num (ch, 36) >= 0 ||
(config->scan_float && ch == '.') ||
(is_E && ch == '+') ||
(is_E && ch == '-') )
ch = g_scanner_get_char (scanner, line_p, position_p);
else
in_number = FALSE;
if (in_number)
switch (ch)
{
case '.':
if (token != G_TOKEN_INT &&
token != G_TOKEN_OCTAL)
{
token = G_TOKEN_ERROR;
if (token == G_TOKEN_FLOAT)
value.v_error = G_ERR_FLOAT_MALFORMED;
else
value.v_error = G_ERR_FLOAT_RADIX;
in_number = FALSE;
}
else
{
token = G_TOKEN_FLOAT;
gstring = g_string_append_c (gstring, ch);
}
break;
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
gstring = g_string_append_c (gstring, ch);
break;
case '-':
case '+':
if (token != G_TOKEN_FLOAT)
{
token = G_TOKEN_ERROR;
value.v_error = G_ERR_NON_DIGIT_IN_CONST;
in_number = FALSE;
}
else
gstring = g_string_append_c (gstring, ch);
break;
case 'e':
case 'E':
if ((token != G_TOKEN_HEX && !config->scan_float) ||
(token != G_TOKEN_HEX &&
token != G_TOKEN_OCTAL &&
token != G_TOKEN_FLOAT &&
token != G_TOKEN_INT))
{
token = G_TOKEN_ERROR;
value.v_error = G_ERR_NON_DIGIT_IN_CONST;
in_number = FALSE;
}
else
{
if (token != G_TOKEN_HEX)
token = G_TOKEN_FLOAT;
gstring = g_string_append_c (gstring, ch);
}
break;
default:
if (token != G_TOKEN_HEX)
{
token = G_TOKEN_ERROR;
value.v_error = G_ERR_NON_DIGIT_IN_CONST;
in_number = FALSE;
}
else
gstring = g_string_append_c (gstring, ch);
break;
}
}
endptr = NULL;
switch (token)
{
case G_TOKEN_BINARY:
value.v_binary = strtoul (gstring->str, &endptr, 2);
break;
case G_TOKEN_OCTAL:
value.v_octal = strtoul (gstring->str, &endptr, 8);
break;
case G_TOKEN_INT:
value.v_int = strtoul (gstring->str, &endptr, 10);
break;
case G_TOKEN_FLOAT:
value.v_float = g_strtod (gstring->str, &endptr);
break;
case G_TOKEN_HEX:
value.v_hex = strtoul (gstring->str, &endptr, 16);
break;
default:
break;
}
if (endptr && *endptr)
{
token = G_TOKEN_ERROR;
if (*endptr == 'e' || *endptr == 'E')
value.v_error = G_ERR_NON_DIGIT_IN_CONST;
else
value.v_error = G_ERR_DIGIT_RADIX;
}
g_string_free (gstring, TRUE);
gstring = NULL;
ch = 0;
break;
default:
default_case:
if (config->cpair_comment_single &&
ch == config->cpair_comment_single[0])
{
token = G_TOKEN_COMMENT_SINGLE;
in_comment_single = TRUE;
gstring = g_string_new ("");
while ((ch = g_scanner_get_char (scanner,
line_p,
position_p)) != 0)
{
if (ch == config->cpair_comment_single[1])
{
in_comment_single = FALSE;
ch = 0;
break;
}
gstring = g_string_append_c (gstring, ch);
ch = 0;
}
}
else if (config->scan_identifier && ch &&
strchr (config->cset_identifier_first, ch))
{
identifier_precedence:
if (config->cset_identifier_nth && ch &&
strchr (config->cset_identifier_nth,
g_scanner_peek_next_char (scanner)))
{
token = G_TOKEN_IDENTIFIER;
gstring = g_string_new ("");
gstring = g_string_append_c (gstring, ch);
do
{
ch = g_scanner_get_char (scanner, line_p, position_p);
gstring = g_string_append_c (gstring, ch);
ch = g_scanner_peek_next_char (scanner);
}
while (ch && strchr (config->cset_identifier_nth, ch));
ch = 0;
}
else if (config->scan_identifier_1char)
{
token = G_TOKEN_IDENTIFIER;
value.v_identifier = g_new0 (gchar, 2);
value.v_identifier[0] = ch;
ch = 0;
}
}
if (ch)
{
if (config->char_2_token)
token = ch;
else
{
token = G_TOKEN_CHAR;
value.v_char = ch;
}
ch = 0;
}
break;
}
g_assert (ch == 0 && token != G_TOKEN_NONE);
}
while (ch != 0);
if (in_comment_multi ||
in_comment_single ||
in_string_sq ||
in_string_dq)
{
token = G_TOKEN_ERROR;
if (gstring)
{
g_string_free (gstring, TRUE);
gstring = NULL;
}
(*position_p)++;
if (in_comment_multi || in_comment_single)
value.v_error = G_ERR_UNEXP_EOF_IN_COMMENT;
else if (in_string_sq || in_string_dq)
value.v_error = G_ERR_UNEXP_EOF_IN_STRING;
}
if (gstring)
{
value.v_string = gstring->str;
g_string_free (gstring, FALSE);
gstring = NULL;
}
if (token == G_TOKEN_IDENTIFIER &&
config->scan_symbols)
{
register GScannerHashVal *hash_val;
hash_val = g_scanner_lookup_internal (scanner, value.v_identifier);
if (hash_val)
{
g_free (value.v_identifier);
token = G_TOKEN_SYMBOL;
value.v_symbol = hash_val->value;
}
}
if (token == G_TOKEN_IDENTIFIER &&
config->scan_identifier_NULL &&
strlen (value.v_identifier) == 4)
{
gchar *null_upper = "NULL";
gchar *null_lower = "null";
if (scanner->config->case_sensitive)
{
if (value.v_identifier[0] == null_upper[0] &&
value.v_identifier[1] == null_upper[1] &&
value.v_identifier[2] == null_upper[2] &&
value.v_identifier[3] == null_upper[3])
token = G_TOKEN_IDENTIFIER_NULL;
}
else
{
if ((value.v_identifier[0] == null_upper[0] ||
value.v_identifier[0] == null_lower[0]) &&
(value.v_identifier[1] == null_upper[1] ||
value.v_identifier[1] == null_lower[1]) &&
(value.v_identifier[2] == null_upper[2] ||
value.v_identifier[2] == null_lower[2]) &&
(value.v_identifier[3] == null_upper[3] ||
value.v_identifier[3] == null_lower[3]))
token = G_TOKEN_IDENTIFIER_NULL;
}
}
*token_p = token;
*value_p = value;
}
Reference in New Issue View Git Blame Copy Permalink