bc806a189b
[COMPILER] * OPT: The parser now does not store integer numbers in its global symbol table anymore. * OPT: Some other little optimizations here and here. The compiler is now about 5% faster. [ARCHIVER] * NEW: Compile with '-O3' optimization flag. [INFORMER] * NEW: Compile with '-O3' optimization flag. [GB.EVAL] * OPT: The parser now does not store integer numbers in its global symbol table anymore.
494 lines
8.8 KiB
C
494 lines
8.8 KiB
C
/***************************************************************************
|
|
|
|
gbc_trans_const.c
|
|
|
|
(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.
|
|
|
|
***************************************************************************/
|
|
|
|
#define __GBC_TRANS_CONST_C
|
|
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <stdio.h>
|
|
#include <ctype.h>
|
|
|
|
#include "gb_common.h"
|
|
#include "gb_error.h"
|
|
#include "gbc_compile.h"
|
|
|
|
#include "gbc_trans.h"
|
|
#include "gb_code.h"
|
|
|
|
|
|
//#define DEBUG 1
|
|
|
|
#define MAX_STACK 32
|
|
|
|
TRANS_CONST_VALUE _stack[MAX_STACK];
|
|
int _stack_ptr = 0;
|
|
|
|
|
|
static void throw_error(void)
|
|
{
|
|
THROW("Constant expression expected");
|
|
}
|
|
|
|
static short get_nparam(PATTERN *tree, int count, int *pindex)
|
|
{
|
|
PATTERN pattern;
|
|
int nparam = 0;
|
|
int index = *pindex;
|
|
|
|
if (index < count)
|
|
{
|
|
pattern = tree[index + 1];
|
|
if (PATTERN_is_param(pattern))
|
|
{
|
|
index++;
|
|
nparam = PATTERN_index(pattern);
|
|
}
|
|
|
|
while (index < count)
|
|
{
|
|
pattern = tree[index + 1];
|
|
if (!PATTERN_is_param(pattern))
|
|
break;
|
|
index++;
|
|
}
|
|
|
|
*pindex = index;
|
|
}
|
|
|
|
return (short)nparam;
|
|
}
|
|
|
|
static TRANS_CONST_VALUE *push_stack()
|
|
{
|
|
if (_stack_ptr >= MAX_STACK)
|
|
THROW("Constant expression too complex");
|
|
return &_stack[_stack_ptr++];
|
|
}
|
|
|
|
|
|
static TRANS_CONST_VALUE *pop_stack(int nparam)
|
|
{
|
|
_stack_ptr -= nparam;
|
|
if (_stack_ptr < 0)
|
|
ERROR_panic("Bad stack computation");
|
|
return &_stack[_stack_ptr];
|
|
}
|
|
|
|
|
|
static void push_integer(int val)
|
|
{
|
|
TRANS_CONST_VALUE *value = push_stack();
|
|
value->type = T_INTEGER;
|
|
value->value._integer = val;
|
|
}
|
|
|
|
|
|
static void push_long(int64_t val)
|
|
{
|
|
TRANS_CONST_VALUE *value = push_stack();
|
|
|
|
if (val < INT_MIN || val > INT_MAX)
|
|
{
|
|
value->type = T_LONG;
|
|
value->value._long = val;
|
|
}
|
|
else
|
|
{
|
|
value->type = T_INTEGER;
|
|
value->value._integer = (int)val;
|
|
}
|
|
}
|
|
|
|
|
|
static void push_number(int index)
|
|
{
|
|
TRANS_CONST_VALUE *value;
|
|
TRANS_NUMBER number;
|
|
|
|
if (TRANS_get_number(index, &number))
|
|
THROW(E_SYNTAX);
|
|
|
|
value = push_stack();
|
|
|
|
if (number.type == T_INTEGER)
|
|
{
|
|
value->type = T_INTEGER;
|
|
value->value._integer = number.ival;
|
|
}
|
|
else if (number.type == T_LONG)
|
|
{
|
|
value->type = T_LONG;
|
|
value->value._long = number.lval;
|
|
}
|
|
else if (number.type == T_FLOAT)
|
|
throw_error();
|
|
|
|
if (number.complex)
|
|
throw_error();
|
|
}
|
|
|
|
|
|
#if 0
|
|
static void push_string(int index, bool trans)
|
|
{
|
|
TRANS_DECL decl;
|
|
SYMBOL *sym;
|
|
int len;
|
|
|
|
if (index == VOID_STRING_INDEX)
|
|
len = 0;
|
|
else
|
|
{
|
|
sym = TABLE_get_symbol(JOB->class->string, index);
|
|
len = sym->len;
|
|
}
|
|
|
|
if (len == 0)
|
|
{
|
|
CODE_push_void_string();
|
|
}
|
|
else if (len == 1 && !trans)
|
|
{
|
|
CODE_push_char(*(sym->name));
|
|
}
|
|
else
|
|
{
|
|
//CLEAR(&decl);
|
|
|
|
if (trans)
|
|
decl.type = TYPE_make_simple(T_CSTRING);
|
|
else
|
|
decl.type = TYPE_make_simple(T_STRING);
|
|
decl.index = NO_SYMBOL;
|
|
decl.value = index;
|
|
|
|
CODE_push_const(CLASS_add_constant(JOB->class, &decl));
|
|
}
|
|
|
|
push_type_id(T_STRING);
|
|
}
|
|
#endif
|
|
|
|
|
|
static void push_identifier(int index, bool point)
|
|
{
|
|
CLASS_SYMBOL *sym = CLASS_get_symbol(JOB->class, index);
|
|
int type;
|
|
CONSTANT *constant;
|
|
TRANS_CONST_VALUE *value;
|
|
|
|
#if DEBUG
|
|
fprintf(stderr, "trans_identifier: %.*s\n", sym->symbol.len, sym->symbol.name);
|
|
#endif
|
|
|
|
if (point)
|
|
{
|
|
push_integer(index);
|
|
return;
|
|
}
|
|
|
|
if (!TYPE_is_null(sym->global.type) && TYPE_get_kind(sym->global.type) == TK_CONST)
|
|
{
|
|
if (!TYPE_is_public(sym->global.type))
|
|
sym->global_used = TRUE;
|
|
//fprintf(stderr, "_last_symbol_used = %.*s / global\n", sym->symbol.len, sym->symbol.name);
|
|
|
|
constant = &JOB->class->constant[sym->global.value];
|
|
type = TYPE_get_id(constant->type);
|
|
if (type >= T_BOOLEAN && type <= T_LONG)
|
|
{
|
|
push_integer(constant->value);
|
|
return;
|
|
}
|
|
|
|
throw_error();
|
|
}
|
|
|
|
if (!TABLE_compare_ignore_case_len(sym->symbol.name, sym->symbol.len, "gb", 2))
|
|
{
|
|
value = push_stack();
|
|
value->type = T_OBJECT;
|
|
return;
|
|
}
|
|
|
|
throw_error();
|
|
}
|
|
|
|
static void trans_subr(int subr, short nparam)
|
|
{
|
|
TRANS_CONST_VALUE *sp;
|
|
SUBR_INFO *info = &COMP_subr_info[subr];
|
|
|
|
if (nparam < info->min_param)
|
|
THROW("Not enough arguments to &1()", info->name);
|
|
else if (nparam > info->max_param)
|
|
THROW("Too many arguments to &1()", info->name);
|
|
|
|
sp = pop_stack(nparam);
|
|
|
|
if (subr == SUBR_SizeOf)
|
|
{
|
|
static char _sizeof[9] = { 0, 1, 1, 2, 4, 8, 4, 8, 8 };
|
|
int type;
|
|
|
|
if (sp->type != T_INTEGER)
|
|
THROW(E_BADARG);
|
|
|
|
type = sp[0].value._integer;
|
|
if (type < T_BOOLEAN)
|
|
THROW(E_BADARG);
|
|
if (type > T_DATE)
|
|
throw_error();
|
|
|
|
push_integer(_sizeof[type]);
|
|
return;
|
|
}
|
|
|
|
throw_error();
|
|
}
|
|
|
|
|
|
static void trans_operation(short op, short nparam)
|
|
{
|
|
COMP_INFO *info = &COMP_res_info[op];
|
|
int64_t v1 = 0, v2 = 0;
|
|
TRANS_CONST_VALUE *sp = pop_stack(nparam);
|
|
const char *name;
|
|
|
|
if (nparam >= 1)
|
|
{
|
|
v1 = sp[0].type == T_LONG ? sp[0].value._long : (int64_t)sp[0].value._integer;
|
|
if (nparam >= 2)
|
|
v2 = sp[1].type == T_LONG ? sp[1].value._long : (int64_t)sp[1].value._integer;
|
|
}
|
|
|
|
switch (info->value)
|
|
{
|
|
case OP_PLUS:
|
|
|
|
push_long(v1 + v2);
|
|
break;
|
|
|
|
case OP_MINUS:
|
|
|
|
if (nparam == 1)
|
|
push_long((- v1));
|
|
else
|
|
push_long(v1 - v2);
|
|
break;
|
|
|
|
case OP_STAR:
|
|
|
|
push_long(v1 * v2);
|
|
break;
|
|
|
|
case OP_SLASH: case OP_DIV:
|
|
|
|
push_long(v1 / v2);
|
|
break;
|
|
|
|
case OP_MOD:
|
|
|
|
push_long(v1 % v2);
|
|
break;
|
|
|
|
case OP_NOT:
|
|
|
|
push_long(~v1);
|
|
break;
|
|
|
|
case OP_AND:
|
|
|
|
push_long(v1 & v2);
|
|
break;
|
|
|
|
case OP_OR:
|
|
|
|
push_long(v1 | v2);
|
|
break;
|
|
|
|
case OP_XOR:
|
|
|
|
push_long(v1 ^ v2);
|
|
break;
|
|
|
|
case OP_SHL: case OP_ASL:
|
|
|
|
if (v2 < 0 || v2 > 64)
|
|
THROW(E_BADARG);
|
|
push_long(((v1 << v2) & 0x7FFFFFFFFFFFFFFFLL) | (v1 & 0x8000000000000000LL));
|
|
break;
|
|
|
|
case OP_SHR: case OP_ASR:
|
|
|
|
if (v2 < 0 || v2 > 64)
|
|
THROW(E_BADARG);
|
|
push_long(((v1 >> v2) & 0x7FFFFFFFFFFFFFFFLL) | (v1 & 0x8000000000000000LL));
|
|
break;
|
|
|
|
case OP_LSL:
|
|
|
|
if (v2 < 0 || v2 > 64)
|
|
THROW(E_BADARG);
|
|
push_long(v1 << v2);
|
|
break;
|
|
|
|
case OP_LSR:
|
|
|
|
if (v2 < 0 || v2 > 64)
|
|
THROW(E_BADARG);
|
|
push_long(v1 >> v2);
|
|
break;
|
|
|
|
case OP_PT:
|
|
|
|
if (nparam != 2)
|
|
throw_error();
|
|
|
|
if (sp[0].type != T_OBJECT)
|
|
throw_error();
|
|
|
|
name = TABLE_get_symbol_name(JOB->class->table, v2);
|
|
|
|
if (!strcasecmp(name, "byte") || !strcasecmp(name, "boolean"))
|
|
push_integer(1);
|
|
else if (!strcasecmp(name, "short"))
|
|
push_integer(2);
|
|
else if (!strcasecmp(name, "integer"))
|
|
push_integer(4);
|
|
else if (!strcasecmp(name, "long"))
|
|
push_integer(8);
|
|
else if (!strcasecmp(name, "single"))
|
|
push_integer(4);
|
|
else if (!strcasecmp(name, "float"))
|
|
push_integer(8);
|
|
else if (!strcasecmp(name, "date"))
|
|
push_integer(8);
|
|
else
|
|
throw_error();
|
|
|
|
break;
|
|
|
|
default:
|
|
throw_error();
|
|
}
|
|
}
|
|
|
|
|
|
static void trans_const_from_tree(TRANS_TREE *tree, int count)
|
|
{
|
|
static void *jump[] = {
|
|
&&__CONTINUE, &&__CONTINUE, &&__RESERVED, &&__IDENTIFIER, &&__INTEGER, &&__NUMBER, &&__STRING, &&__TSTRING, &&__CONTINUE, &&__SUBR, &&__CLASS, &&__CONTINUE, &&__CONTINUE
|
|
};
|
|
|
|
int i, op;
|
|
short nparam;
|
|
PATTERN pattern;
|
|
|
|
pattern = NULL_PATTERN;
|
|
|
|
#if DEBUG
|
|
fprintf(stderr, "-------------------------------------------- %d\n", _type_level);
|
|
#endif
|
|
|
|
i = 0;
|
|
|
|
for (i = 0; i < count; i++)
|
|
{
|
|
TRANS_tree_index = i;
|
|
pattern = tree[i];
|
|
|
|
goto *jump[PATTERN_type(pattern)];
|
|
|
|
__INTEGER:
|
|
|
|
push_integer(PATTERN_signed_index(pattern));
|
|
continue;
|
|
|
|
__NUMBER:
|
|
|
|
push_number(PATTERN_index(pattern));
|
|
continue;
|
|
|
|
__IDENTIFIER:
|
|
|
|
push_identifier(PATTERN_index(pattern), PATTERN_is_point(pattern));
|
|
continue;
|
|
|
|
__SUBR:
|
|
|
|
nparam = get_nparam(tree, count, &i);
|
|
trans_subr(PATTERN_index(pattern), nparam);
|
|
continue;
|
|
|
|
__CLASS:
|
|
__STRING:
|
|
__TSTRING:
|
|
|
|
throw_error();
|
|
continue;
|
|
|
|
__RESERVED:
|
|
|
|
if (PATTERN_is(pattern, RS_TRUE))
|
|
{
|
|
push_integer(-1);
|
|
}
|
|
else if (PATTERN_is(pattern, RS_FALSE))
|
|
{
|
|
push_integer(0);
|
|
}
|
|
else
|
|
{
|
|
op = PATTERN_index(pattern);
|
|
nparam = get_nparam(tree, count, &i);
|
|
trans_operation((short)op, nparam);
|
|
}
|
|
|
|
__CONTINUE:
|
|
;
|
|
}
|
|
|
|
TRANS_tree_index = -1;
|
|
}
|
|
|
|
TRANS_CONST_VALUE *TRANS_const(void)
|
|
{
|
|
TRANS_TREE *tree;
|
|
int tree_length;
|
|
|
|
_stack_ptr = 0;
|
|
|
|
TRANS_tree(FALSE, &tree, &tree_length);
|
|
|
|
JOB->step = JOB_STEP_TREE;
|
|
trans_const_from_tree(tree, tree_length);
|
|
JOB->step = JOB_STEP_CODE;
|
|
|
|
//FREE(&tree);
|
|
|
|
if (_stack_ptr != 1)
|
|
THROW(E_SYNTAX);
|
|
|
|
return &_stack[0];
|
|
}
|