gambas-source-code/main/share/gbc_read_temp.h

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/***************************************************************************
gbc_read_temp.h
(c) Benoît Minisini <g4mba5@gmail.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
MA 02110-1301, USA.
***************************************************************************/
#ifndef __GBC_READ_TEMP_H
#define __GBC_READ_TEMP_H
#ifdef __EVAL_READ_C
#define SYMBOL_TABLE EVAL->table
#else
#define SYMBOL_TABLE comp->class->table
#endif
static bool add_number()
{
unsigned char car;
const char *start;
int index;
char sign;
PATTERN last_pattern;
bool has_digit;
bool is_integer = FALSE;
int len;
start = source_ptr;
car = get_char();
if (car == '-' || car == '+')
{
sign = car;
car = next_char();
if (car == 'I' || car == 'i')
{
car = next_char();
if (car == 'N' || car == 'n')
{
car = next_char();
if (car == 'F' || car == 'f')
{
car = next_char();
add_pattern(RT_RESERVED, RESERVED_find_word(start, 4));
return FALSE;
}
}
goto NOT_A_NUMBER;
}
}
else
sign = 0;
if (isdigit(car))
goto READ_NUMBER;
else if (car == '&')
{
car = toupper(next_char());
if (car == 'H')
goto READ_HEXA;
else if (car == 'X')
goto READ_BINARY;
else if (car == 'O')
goto READ_OCTAL;
else
{
source_ptr--;
goto READ_HEXA;
}
}
else if (car == '%')
goto READ_BINARY;
else
goto NOT_A_NUMBER;
READ_BINARY:
has_digit = FALSE;
for (;;)
{
car = next_char();
if (car != '0' && car != '1')
break;
has_digit = TRUE;
}
goto END_BINARY_HEXA;
READ_OCTAL:
has_digit = FALSE;
for (;;)
{
car = next_char();
if (car < '0' || car > '7')
break;
has_digit = TRUE;
}
goto END_BINARY_HEXA;
READ_HEXA:
has_digit = FALSE;
for (;;)
{
car = next_char();
if (!isxdigit(car))
break;
has_digit = TRUE;
}
END_BINARY_HEXA:
if (!has_digit)
goto NOT_A_NUMBER;
if (car == '&')
car = next_char();
else if (first_car[car] == GOTO_IDENT)
goto NOT_A_NUMBER;
goto END;
READ_NUMBER:
while (isdigit(car))
car = next_char();
is_integer = TRUE;
if (car == '.')
{
is_integer = FALSE;
do
{
car = next_char();
}
while (isdigit(car));
}
if (car == 'E' || car == 'e')
{
is_integer = FALSE;
car = next_char();
if (car == '+' || car == '-')
car = next_char();
while (isdigit(car))
car = next_char();
}
else if (car == 'I' || car == 'i')
{
is_integer = FALSE;
car = next_char();
}
goto END;
END:
last_pattern = get_last_pattern();
if (sign && !PATTERN_is_null(last_pattern) && (!PATTERN_is_reserved(last_pattern) || PATTERN_is(last_pattern, RS_RBRA) || PATTERN_is(last_pattern, RS_RSQR)))
{
add_pattern(RT_RESERVED, RESERVED_find_word(&sign, 1));
start++;
}
len = source_ptr - start;
if (is_integer && len <= 6)
{
char buffer[8];
memcpy(buffer, start, len);
buffer[len] = 0;
add_pattern(RT_INTEGER, (atoi(buffer) & 0xFFFFFF));
}
else
{
index = TABLE_add_symbol(SYMBOL_TABLE, start, len);
add_pattern(RT_NUMBER, index);
}
return FALSE;
NOT_A_NUMBER:
source_ptr = start;
return TRUE;
}
static void add_identifier()
{
unsigned char car;
const char *start;
int len;
int index;
int type;
int flag;
PATTERN last_pattern, last_last_pattern;
bool not_first;
bool can_be_reserved;
bool last_identifier, last_type, last_class, last_pub, last_point, last_excl;
#ifdef __EVAL_READ_C
bool exist = TRUE;
#endif
last_pattern = get_last_pattern();
if (PATTERN_is_reserved(last_pattern))
{
flag = RES_get_ident_flag(PATTERN_index(last_pattern));
if (flag & RSF_PREV)
{
last_last_pattern = get_last_last_pattern();
if (PATTERN_is_reserved(last_last_pattern))
flag = RES_get_ident_flag(PATTERN_index(last_last_pattern));
else
flag = 0;
}
}
else
flag = 0;
type = RT_IDENTIFIER;
last_class = (flag & RSF_CLASS) != 0;
last_type = (flag & RSF_AS) != 0;
last_point = PATTERN_is(last_pattern, RS_PT);
last_excl = PATTERN_is(last_pattern, RS_EXCL);
start = source_ptr;
for(;;)
{
source_ptr++;
if (!ident_car[get_char()])
break;
}
if (!last_point && !last_excl && get_char() == ':')
{
for(;;)
{
source_ptr++;
if (!ident_car[get_char()])
break;
}
}
if (get_char_offset(-1) == ':')
source_ptr--;
len = source_ptr - start;
if (last_type)
{
source_ptr--;
for(;;)
{
source_ptr++;
len++;
car = get_char();
if (car == '[')
{
car = get_char_offset(1);
if (car == ']')
{
source_ptr++;
len++;
index = TABLE_add_symbol(SYMBOL_TABLE, start, len - 2);
continue;
}
}
len--;
break;
}
}
not_first = (flag & RSF_POINT) != 0;
car = get_char();
//can_be_reserved = !not_first && TABLE_find_symbol(COMP_res_table, &comp->source[start], len, NULL, &index);
can_be_reserved = !not_first && !last_class;
if (can_be_reserved)
{
//fprintf(stderr, "can_be_reserved: %.*s\n", len, start);
index = RESERVED_find_word(start, len);
can_be_reserved = (index >= 0);
}
if (can_be_reserved)
{
static void *jump[] = {
&&__OTHERS, &&__ME_NEW_LAST_SUPER, &&__CLASS, &&__STRUCT, &&__SUB_PROCEDURE_FUNCTION, &&__CONST_EXTERN, &&__ENUM, &&__READ, &&__DATATYPE
};
last_identifier = (flag & RSF_IDENT) != 0;
last_pub = (flag & RSF_PUB) != 0;
goto *jump[RES_get_read_switch(index)];
do
{
__ME_NEW_LAST_SUPER:
can_be_reserved = !last_identifier;
break;
__CLASS:
can_be_reserved = canres_car[car] && (_begin_line || PATTERN_is(last_pattern, RS_END));
break;
__STRUCT:
can_be_reserved = canres_car[car] && (_begin_line || last_pub || PATTERN_is(last_pattern, RS_AS) || PATTERN_is(last_pattern, RS_END) || PATTERN_is(last_pattern, RS_NEW));
break;
__SUB_PROCEDURE_FUNCTION:
can_be_reserved = canres_car[car] && (_begin_line || last_pub || PATTERN_is(last_pattern, RS_END));
break;
__CONST_EXTERN:
can_be_reserved = canres_car[car] && (_begin_line || last_pub);
break;
__ENUM:
can_be_reserved = canres_car[car] && (_begin_line || last_pub);
break;
__READ:
can_be_reserved = canres_car[car] && (!last_identifier || PATTERN_is(last_pattern, RS_PROPERTY));
break;
__DATATYPE:
if (car == '[' && get_char_offset(1) == ']')
{
len += 2;
source_ptr += 2;
can_be_reserved = FALSE;
}
else
{
if (last_type || PATTERN_is(last_pattern, RS_OPEN))
can_be_reserved = TRUE;
else
can_be_reserved = FALSE;
}
break;
__OTHERS:
if (last_type || last_identifier || (PATTERN_is(last_pattern, RS_LBRA) && car == ')' && PATTERN_is_reserved(get_last_last_pattern())))
can_be_reserved = FALSE;
else
can_be_reserved = canres_car[car];
break;
}
while (0);
}
if (can_be_reserved)
{
type = RT_RESERVED;
goto __ADD_PATTERN;
}
if ((flag == 0) && car != '.' && car != '!')
{
index = RESERVED_find_subr(start, len);
if (index >= 0)
{
if (COMP_subr_info[index].min_param == 0 || car == '(')
{
type = RT_SUBR;
#ifdef __EVAL_READ_C
if (EVAL->custom)
{
GB_FUNCTION func;
GB_VALUE *ret;
if (!GB.GetFunction(&func, (void *)GB.GetClass(EVAL->parent), "IsSubr", NULL, NULL))
{
GB.Push(1, GB_T_STRING, start, len);
ret = GB.Call(&func, 1, FALSE);
if (!ret->_boolean.value)
{
exist = TABLE_add_symbol_exist(EVAL->table, start, len, &index);
type = RT_IDENTIFIER;
}
}
}
#endif
goto __ADD_PATTERN;
}
}
}
if (last_type)
type = RT_CLASS;
#ifdef __EVAL_READ_C
if (!EVAL->analyze && PATTERN_is(last_pattern, RS_EXCL))
{
index = TABLE_add_symbol(EVAL->string, start, len);
type = RT_STRING;
}
else
{
exist = TABLE_add_symbol_exist(EVAL->table, start, len, &index);
}
#else
if (flag & RSF_EVENT)
{
start--;
len++;
*((char *)start) = ':';
}
if (last_excl)
{
index = TABLE_add_symbol(comp->class->string, start, len);
type = RT_STRING;
}
else
index = TABLE_add_symbol(comp->class->table, start, len);
#endif
__ADD_PATTERN:
add_pattern(type, index);
#ifdef __EVAL_READ_C
if (EVAL->custom && !exist)
{
GB_FUNCTION func;
GB_VALUE *ret;
if (!GB.GetFunction(&func, (void *)GB.GetClass(EVAL->parent), "IsIdentifier", NULL, NULL))
{
GB.Push(1, GB_T_STRING, start, len);
ret = GB.Call(&func, 1, FALSE);
if (!ret->_boolean.value)
THROW("Unknown symbol");
}
}
#endif
}
#endif