1721 lines
41 KiB
C
1721 lines
41 KiB
C
/*
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constfold.c
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expression constant folding
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Copyright (C) 2004 Bill Currie <bill@taniwha.org>
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Author: Bill Currie <bill@taniwha.org>
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Date: 2004/01/22
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License 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 this program; if not, write to:
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Free Software Foundation, Inc.
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59 Temple Place - Suite 330
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Boston, MA 02111-1307, USA
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#ifdef HAVE_STRING_H
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# include <string.h>
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#endif
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#ifdef HAVE_STRINGS_H
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# include <strings.h>
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#endif
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#include <stdlib.h>
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#include <QF/dstring.h>
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#include <QF/mathlib.h>
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#include "tools/qfcc/include/diagnostic.h"
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#include "tools/qfcc/include/expr.h"
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#include "tools/qfcc/include/options.h"
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#include "tools/qfcc/include/qfcc.h"
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#include "tools/qfcc/include/strpool.h"
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#include "tools/qfcc/include/type.h"
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#include "tools/qfcc/include/value.h"
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#include "tools/qfcc/source/qc-parse.h"
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typedef expr_t *(*operation_t) (int op, expr_t *e, expr_t *e1, expr_t *e2);
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typedef expr_t *(*unaryop_t) (int op, expr_t *e, expr_t *e1);
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static expr_t *
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cf_cast_expr (type_t *type, expr_t *e)
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{
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e = cast_expr (type, e);
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return e;
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}
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static __attribute__((pure)) int
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valid_op (int op, int *valid_ops)
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{
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while (*valid_ops && op != *valid_ops)
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valid_ops++;
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return *valid_ops == op;
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}
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static expr_t *
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cmp_result_expr (int result)
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{
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if (is_float (type_default)) {
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return new_float_expr (result);
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} else {
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return new_integer_expr(result);
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}
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}
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static expr_t *
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do_op_string (int op, expr_t *e, expr_t *e1, expr_t *e2)
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{
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const char *s1, *s2;
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static dstring_t *temp_str;
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static int valid[] = {'=', '+', LT, GT, LE, GE, EQ, NE, 0};
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if (!valid_op (op, valid))
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return error (e1, "invalid operand for string");
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if (is_compare (op) || is_logic (op)) {
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if (options.code.progsversion > PROG_ID_VERSION)
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e->e.expr.type = &type_integer;
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else
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e->e.expr.type = &type_float;
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} else {
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e->e.expr.type = &type_string;
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}
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if (op == '=' || !is_constant (e1) || !is_constant (e2))
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return e;
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s1 = expr_string (e1);
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s2 = expr_string (e2);
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if (!s1)
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s1 = "";
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if (!s2)
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s2 = "";
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switch (op) {
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case '+':
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if (!temp_str)
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temp_str = dstring_newstr ();
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dstring_clearstr (temp_str);
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dstring_appendstr (temp_str, s1);
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dstring_appendstr (temp_str, s2);
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e = new_string_expr (save_string (temp_str->str));
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break;
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case LT:
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e = cmp_result_expr (strcmp (s1, s2) < 0);
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break;
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case GT:
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e = cmp_result_expr (strcmp (s1, s2) > 0);
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break;
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case LE:
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e = cmp_result_expr (strcmp (s1, s2) <= 0);
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break;
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case GE:
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e = cmp_result_expr (strcmp (s1, s2) >= 0);
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break;
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case EQ:
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e = cmp_result_expr (strcmp (s1, s2) == 0);
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break;
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case NE:
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e = cmp_result_expr (strcmp (s1, s2));
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break;
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default:
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internal_error (e1, 0);
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}
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e->file = e1->file;
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e->line = e1->line;
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return e;
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}
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static expr_t *
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convert_to_float (expr_t *e)
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{
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if (is_float(get_type (e)))
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return e;
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switch (e->type) {
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case ex_value:
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switch (e->e.value->lltype) {
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case ev_integer:
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convert_int (e);
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return e;
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case ev_short:
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convert_short (e);
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return e;
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case ev_double:
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convert_double (e);
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return e;
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default:
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internal_error (e, "bad conversion to float: %d",
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e->e.value->lltype);
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}
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break;
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case ex_symbol:
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case ex_expr:
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case ex_uexpr:
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case ex_temp:
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case ex_block:
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e = cf_cast_expr (&type_float, e);
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return e;
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default:
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internal_error (e, 0);
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}
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}
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static expr_t *
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convert_to_double (expr_t *e)
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{
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if (is_double(get_type (e)))
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return e;
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switch (e->type) {
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case ex_value:
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switch (e->e.value->lltype) {
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case ev_integer:
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e->e.value = new_double_val (expr_integer (e));
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return e;
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case ev_short:
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e->e.value = new_double_val (expr_short (e));
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return e;
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case ev_float:
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e->e.value = new_double_val (expr_float (e));
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return e;
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default:
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internal_error (e, 0);
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}
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break;
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case ex_symbol:
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case ex_expr:
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case ex_uexpr:
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case ex_temp:
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case ex_block:
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e = cf_cast_expr (&type_float, e);
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return e;
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default:
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internal_error (e, 0);
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}
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}
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static expr_t *
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do_op_float (int op, expr_t *e, expr_t *e1, expr_t *e2)
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{
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float f1, f2;
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expr_t *conv;
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type_t *type = &type_float;
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static int valid[] = {
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'=', '+', '-', '*', '/', '&', '|', '^', '%',
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SHL, SHR, AND, OR, LT, GT, LE, GE, EQ, NE, 0
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};
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if (!valid_op (op, valid))
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return error (e1, "invalid operator for float");
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if (op == '=') {
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if (!is_float(type = get_type (e1))) {
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//FIXME optimize casting a constant
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e->e.expr.e2 = e2 = cf_cast_expr (type, e2);
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} else if ((conv = convert_to_float (e2)) != e2) {
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e->e.expr.e2 = e2 = conv;
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}
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} else {
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if ((conv = convert_to_float (e1)) != e1) {
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e->e.expr.e1 = e1 = conv;
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}
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if ((conv = convert_to_float (e2)) != e2) {
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e->e.expr.e2 = e2 = conv;
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}
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}
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if (is_compare (op) || is_logic (op)) {
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if (options.code.progsversion > PROG_ID_VERSION)
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type = &type_integer;
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else
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type = &type_float;
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}
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e->e.expr.type = type;
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if (op == '*' && is_constant (e1) && expr_float (e1) == 1)
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return e2;
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if (op == '*' && is_constant (e2) && expr_float (e2) == 1)
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return e1;
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if (op == '*' && is_constant (e1) && expr_float (e1) == 0)
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return e1;
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if (op == '*' && is_constant (e2) && expr_float (e2) == 0)
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return e2;
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if (op == '/' && is_constant (e2) && expr_float (e2) == 1)
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return e1;
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if (op == '/' && is_constant (e2) && expr_float (e2) == 0)
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return error (e, "division by zero");
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if (op == '/' && is_constant (e1) && expr_float (e1) == 0)
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return e1;
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if (op == '+' && is_constant (e1) && expr_float (e1) == 0)
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return e2;
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if (op == '+' && is_constant (e2) && expr_float (e2) == 0)
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return e1;
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if (op == '-' && is_constant (e2) && expr_float (e2) == 0)
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return e1;
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if (op == '=' || !is_constant (e1) || !is_constant (e2))
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return e;
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f1 = expr_float (e1);
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f2 = expr_float (e2);
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switch (op) {
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case '+':
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e = new_float_expr (f1 + f2);
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break;
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case '-':
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e = new_float_expr (f1 - f2);
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break;
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case '*':
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e = new_float_expr (f1 * f2);
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break;
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case '/':
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if (!f2)
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return error (e1, "divide by zero");
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e = new_float_expr (f1 / f2);
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break;
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case '&':
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e = new_float_expr ((int)f1 & (int)f2);
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break;
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case '|':
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e = new_float_expr ((int)f1 | (int)f2);
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break;
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case '^':
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e = new_float_expr ((int)f1 ^ (int)f2);
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break;
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case '%':
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e = new_float_expr ((int)f1 % (int)f2);
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break;
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case SHL:
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e = new_float_expr ((int)f1 << (int)f2);
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break;
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case SHR:
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e = new_float_expr ((int)f1 >> (int)f2);
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break;
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case AND:
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e = cmp_result_expr (f1 && f2);
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break;
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case OR:
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e = cmp_result_expr (f1 || f2);
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break;
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case LT:
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e = cmp_result_expr (f1 < f2);
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break;
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case GT:
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e = cmp_result_expr (f1 > f2);
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break;
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case LE:
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e = cmp_result_expr (f1 <= f2);
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break;
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case GE:
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e = cmp_result_expr (f1 >= f2);
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break;
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case EQ:
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e = cmp_result_expr (f1 == f2);
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break;
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case NE:
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e = cmp_result_expr (f1 != f2);
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break;
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default:
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internal_error (e1, 0);
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}
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e->file = e1->file;
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e->line = e1->line;
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return e;
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}
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static expr_t *
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do_op_double (int op, expr_t *e, expr_t *e1, expr_t *e2)
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{
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double d1, d2;
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expr_t *conv;
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type_t *type = &type_double;
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static int valid[] = {
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'=', '+', '-', '*', '/', '%',
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LT, GT, LE, GE, EQ, NE, 0
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};
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if (!valid_op (op, valid))
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return error (e1, "invalid operator for double");
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if (op == '=') {
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if (!is_double(type = get_type (e1))) {
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//FIXME optimize casting a constant
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e->e.expr.e2 = e2 = cf_cast_expr (type, e2);
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} else if ((conv = convert_to_double (e2)) != e2) {
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e->e.expr.e2 = e2 = conv;
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}
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} else {
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if ((conv = convert_to_double (e1)) != e1) {
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e->e.expr.e1 = e1 = conv;
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}
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if ((conv = convert_to_double (e2)) != e2) {
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e->e.expr.e2 = e2 = conv;
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}
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}
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if (is_compare (op) || is_logic (op)) {
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type = &type_integer;
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}
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e->e.expr.type = type;
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if (op == '*' && is_constant (e1) && expr_double (e1) == 1)
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return e2;
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if (op == '*' && is_constant (e2) && expr_double (e2) == 1)
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return e1;
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if (op == '*' && is_constant (e1) && expr_double (e1) == 0)
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return e1;
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if (op == '*' && is_constant (e2) && expr_double (e2) == 0)
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return e2;
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if (op == '/' && is_constant (e2) && expr_double (e2) == 1)
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return e1;
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if (op == '/' && is_constant (e2) && expr_double (e2) == 0)
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return error (e, "division by zero");
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if (op == '/' && is_constant (e1) && expr_double (e1) == 0)
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return e1;
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if (op == '+' && is_constant (e1) && expr_double (e1) == 0)
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return e2;
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if (op == '+' && is_constant (e2) && expr_double (e2) == 0)
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return e1;
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if (op == '-' && is_constant (e2) && expr_double (e2) == 0)
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return e1;
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if (op == '=' || !is_constant (e1) || !is_constant (e2))
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return e;
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d1 = expr_double (e1);
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d2 = expr_double (e2);
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switch (op) {
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case '+':
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e = new_double_expr (d1 + d2);
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break;
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case '-':
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e = new_double_expr (d1 - d2);
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break;
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case '*':
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e = new_double_expr (d1 * d2);
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break;
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case '/':
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if (!d2)
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return error (e1, "divide by zero");
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e = new_double_expr (d1 / d2);
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break;
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case '%':
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e = new_double_expr ((int)d1 % (int)d2);
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break;
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case LT:
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e = cmp_result_expr (d1 < d2);
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break;
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case GT:
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e = cmp_result_expr (d1 > d2);
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break;
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case LE:
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e = cmp_result_expr (d1 <= d2);
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break;
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case GE:
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e = cmp_result_expr (d1 >= d2);
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break;
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case EQ:
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e = cmp_result_expr (d1 == d2);
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break;
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case NE:
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e = cmp_result_expr (d1 != d2);
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break;
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default:
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internal_error (e1, 0);
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}
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e->file = e1->file;
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e->line = e1->line;
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return e;
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}
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static expr_t *
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do_op_vector (int op, expr_t *e, expr_t *e1, expr_t *e2)
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{
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const float *v1, *v2;
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vec3_t v, float_vec;
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static int valid[] = {'=', '+', '-', '*', EQ, NE, 0};
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expr_t *t;
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if (!is_vector(get_type (e1))) {
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if (op != '*')
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return error (e1, "invalid operator for vector");
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t = e1;
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e->e.expr.e1 = e1 = e2;
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e2 = t;
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}
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if (!is_vector(get_type (e2))) {
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e->e.expr.e2 = e2 = convert_to_float (e2);
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if (op != '*' && op != '/')
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return error (e1, "invalid operator for vector");
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} else {
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if (!valid_op (op, valid))
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return error (e1, "invalid operator for vector");
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}
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if (is_compare (op) || is_logic (op)) {
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if (options.code.progsversion > PROG_ID_VERSION)
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e->e.expr.type = &type_integer;
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else
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e->e.expr.type = &type_float;
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} else if (op == '*' && is_vector(get_type (e2))) {
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e->e.expr.type = &type_float;
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} else if (op == '/' && !is_constant (e1)) {
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e2 = fold_constants (binary_expr ('/', new_float_expr (1), e2));
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e = fold_constants (binary_expr ('*', e1, e2));
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} else {
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e->e.expr.type = &type_vector;
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}
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if (op == '*' && is_float_val (e2) && expr_float (e2) == 1)
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return e1;
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if (op == '*' && is_float_val (e2) && expr_float (e2) == 0)
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return new_vector_expr (vec3_origin);
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if (op == '/' && is_float_val (e2) && expr_float (e2) == 1)
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return e1;
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if (op == '/' && is_float_val (e2) && expr_float (e2) == 0)
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return error (e, "division by zero");
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if (op == '+' && is_constant (e1) && VectorIsZero (expr_vector (e1)))
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return e2;
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if (op == '+' && is_constant (e2) && VectorIsZero (expr_vector (e2)))
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return e1;
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if (op == '-' && is_constant (e1) && VectorIsZero (expr_vector (e1))
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&& is_constant (e2)) {
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vec3_t v;
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VectorNegate (expr_vector (e2), v);
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e = new_vector_expr (v);
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|
e->file = e2->file;
|
|
e->line = e2->line;
|
|
return e;
|
|
}
|
|
if (op == '-' && is_constant (e2) && VectorIsZero (expr_vector (e2)))
|
|
return e1;
|
|
|
|
if (op == '=' || !is_constant (e1) || !is_constant (e2))
|
|
return e;
|
|
|
|
if (is_float_val (e1)) {
|
|
float_vec[0] = expr_float (e1);
|
|
v2 = float_vec;
|
|
v1 = expr_vector (e2);
|
|
} else if (is_float_val (e2)) {
|
|
float_vec[0] = expr_float (e2);
|
|
v2 = float_vec;
|
|
v1 = expr_vector (e1);
|
|
} else {
|
|
v1 = expr_vector (e1);
|
|
v2 = expr_vector (e2);
|
|
}
|
|
|
|
switch (op) {
|
|
case '+':
|
|
VectorAdd (v1, v2, v);
|
|
e = new_vector_expr (v);
|
|
break;
|
|
case '-':
|
|
VectorSubtract (v1, v2, v);
|
|
e = new_vector_expr (v);
|
|
break;
|
|
case '/':
|
|
if (!v2[0])
|
|
return error (e1, "divide by zero");
|
|
VectorScale (v1, 1 / v2[0], v);
|
|
e = new_vector_expr (v);
|
|
break;
|
|
case '*':
|
|
if (is_vector(get_type (e2))) {
|
|
e = new_float_expr (DotProduct (v1, v2));
|
|
} else {
|
|
VectorScale (v1, v2[0], v);
|
|
e = new_vector_expr (v);
|
|
}
|
|
break;
|
|
case EQ:
|
|
e = cmp_result_expr (VectorCompare (v1, v2));
|
|
break;
|
|
case NE:
|
|
e = cmp_result_expr (!VectorCompare (v1, v2));
|
|
break;
|
|
default:
|
|
internal_error (e1, 0);
|
|
}
|
|
e->file = e1->file;
|
|
e->line = e1->line;
|
|
return e;
|
|
}
|
|
|
|
static expr_t *
|
|
do_op_entity (int op, expr_t *e, expr_t *e1, expr_t *e2)
|
|
{
|
|
type_t *type = get_type (e2);
|
|
|
|
if ((op == '.' || op == '&') && type->type == ev_field) {
|
|
return e;
|
|
}
|
|
if (op == EQ || op == NE) {
|
|
if (options.code.progsversion > PROG_ID_VERSION)
|
|
e->e.expr.type = &type_integer;
|
|
else
|
|
e->e.expr.type = &type_float;
|
|
return e;
|
|
}
|
|
if (op != '=' || !is_entity(type))
|
|
return error (e1, "invalid operator for entity");
|
|
e->e.expr.type = &type_entity;
|
|
return e;
|
|
}
|
|
|
|
static expr_t *
|
|
do_op_field (int op, expr_t *e, expr_t *e1, expr_t *e2)
|
|
{
|
|
if (op != '=')
|
|
return error (e1, "invalid operator for field");
|
|
e->e.expr.type = &type_field;
|
|
return e;
|
|
}
|
|
|
|
static expr_t *
|
|
do_op_func (int op, expr_t *e, expr_t *e1, expr_t *e2)
|
|
{
|
|
if (op == 'c') {
|
|
e->e.expr.type = get_type (e1)->t.func.type;
|
|
return e;
|
|
}
|
|
if (op == EQ || op == NE) {
|
|
if (options.code.progsversion > PROG_ID_VERSION)
|
|
e->e.expr.type = &type_integer;
|
|
else
|
|
e->e.expr.type = &type_float;
|
|
return e;
|
|
}
|
|
if (op != '=')
|
|
return error (e1, "invalid operator for func");
|
|
e->e.expr.type = &type_function;
|
|
return e;
|
|
}
|
|
|
|
static expr_t *
|
|
do_op_pointer (int op, expr_t *e, expr_t *e1, expr_t *e2)
|
|
{
|
|
type_t *type;
|
|
static int valid[] = {'=', '-', '&', 'M', '.', EQ, NE, 0};
|
|
|
|
if (is_integral (type = get_type (e2)) && (op == '-' || op == '+')) {
|
|
// pointer arithmetic
|
|
expr_t *ptoi = new_alias_expr (type, e1);
|
|
e->e.expr.e1 = ptoi;
|
|
e = fold_constants (e);
|
|
return new_alias_expr (get_type (e1), e);
|
|
}
|
|
if (!valid_op (op, valid))
|
|
return error (e1, "invalid operator for pointer: %s",
|
|
get_op_string (op));
|
|
|
|
if (op == '-') {
|
|
type = get_type (e1);
|
|
if (type != get_type (e2))
|
|
return error (e2, "invalid operands to binary -");
|
|
e1 = new_alias_expr (&type_integer, e1);
|
|
e2 = new_alias_expr (&type_integer, e2);
|
|
e = binary_expr ('-', e1, e2);
|
|
if (type_size (type) != 1)
|
|
e = binary_expr ('/', e, new_integer_expr (type_size (type)));
|
|
return e;
|
|
}
|
|
if (op == EQ || op == NE) {
|
|
if (options.code.progsversion > PROG_ID_VERSION)
|
|
e->e.expr.type = &type_integer;
|
|
else
|
|
e->e.expr.type = &type_float;
|
|
}
|
|
if (op != '.' && op != '&' && op != 'M'
|
|
&& extract_type (e1) != extract_type (e2))
|
|
return type_mismatch (e1, e2, op);
|
|
if ((op == '.' || op == '&') && is_uinteger(get_type (e2)))
|
|
e->e.expr.e2 = cf_cast_expr (&type_integer, e2);
|
|
return e;
|
|
}
|
|
|
|
static expr_t *
|
|
do_op_quatvect (int op, expr_t *e, expr_t *e1, expr_t *e2)
|
|
{
|
|
if (op != '*')
|
|
return error (e1, "invalid operator for quaternion and vector");
|
|
if (is_constant (e1) && QuatIsZero (expr_quaternion (e1)))
|
|
return new_vector_expr (vec3_origin);
|
|
if (is_constant (e2) && VectorIsZero (expr_vector (e2)))
|
|
return new_vector_expr (vec3_origin);
|
|
if (is_constant (e1) && is_constant (e2)) {
|
|
const vec_t *q, *v;
|
|
vec3_t r;
|
|
|
|
q = expr_quaternion (e1);
|
|
v = expr_vector (e2);
|
|
QuatMultVec (q, v, r);
|
|
return new_vector_expr (r);
|
|
}
|
|
e->e.expr.type = &type_vector;
|
|
return e;
|
|
}
|
|
|
|
static expr_t *
|
|
do_op_quaternion (int op, expr_t *e, expr_t *e1, expr_t *e2)
|
|
{
|
|
const float *q1, *q2;
|
|
quat_t q, float_quat;
|
|
static int valid[] = {'=', '+', '-', '*', EQ, NE, 0};
|
|
expr_t *t;
|
|
|
|
if (!is_quaternion(get_type (e1))) {
|
|
|
|
if (op != '*' && op != '/')
|
|
return error (e1, "invalid operator for quaternion");
|
|
|
|
if (op == '*') {
|
|
t = e1;
|
|
e->e.expr.e1 = e1 = e2;
|
|
e2 = t;
|
|
}
|
|
}
|
|
if (!is_quaternion(get_type (e2))) {
|
|
e->e.expr.e2 = e2 = convert_to_float (e2);
|
|
if (op != '*' && op != '/')
|
|
return error (e1, "invalid operator for quaternion");
|
|
} else {
|
|
if (!valid_op (op, valid))
|
|
return error (e1, "invalid operator for quaternion");
|
|
}
|
|
if (is_compare (op) || is_logic (op)) {
|
|
if (options.code.progsversion > PROG_ID_VERSION)
|
|
e->e.expr.type = &type_integer;
|
|
else
|
|
e->e.expr.type = &type_float;
|
|
} else if (op == '/' && !is_constant (e1)) {
|
|
e2 = fold_constants (binary_expr ('/', new_float_expr (1), e2));
|
|
e = fold_constants (binary_expr ('*', e1, e2));
|
|
} else {
|
|
e->e.expr.type = &type_quaternion;
|
|
}
|
|
|
|
if (op == '*' && is_float_val (e2) && expr_float (e2) == 1)
|
|
return e1;
|
|
if (op == '*' && is_float_val (e2) && expr_float (e2) == 0)
|
|
return new_quaternion_expr (quat_origin);
|
|
if (op == '/' && is_float_val (e2) && expr_float (e2) == 1)
|
|
return e1;
|
|
if (op == '/' && is_float_val (e2) && expr_float (e2) == 0)
|
|
return error (e, "division by zero");
|
|
if (op == '+' && is_constant (e1) && QuatIsZero (expr_quaternion (e1)))
|
|
return e2;
|
|
if (op == '+' && is_constant (e2) && QuatIsZero (expr_quaternion (e2)))
|
|
return e1;
|
|
if (op == '-' && is_constant (e2) && QuatIsZero (expr_quaternion (e2)))
|
|
return e1;
|
|
|
|
if (op == '=' || !is_constant (e1) || !is_constant (e2))
|
|
return e;
|
|
|
|
if (is_float_val (e1)) {
|
|
QuatSet (0, 0, 0, expr_float (e1), float_quat);
|
|
q2 = float_quat;
|
|
q1 = expr_quaternion (e2);
|
|
} else if (is_float_val (e2)) {
|
|
QuatSet (0, 0, 0, expr_float (e2), float_quat);
|
|
q2 = float_quat;
|
|
q1 = expr_quaternion (e1);
|
|
} else {
|
|
q1 = expr_quaternion (e1);
|
|
q2 = expr_quaternion (e2);
|
|
}
|
|
|
|
switch (op) {
|
|
case '+':
|
|
QuatAdd (q1, q2, q);
|
|
e = new_quaternion_expr (q);
|
|
break;
|
|
case '-':
|
|
QuatSubtract (q1, q2, q);
|
|
e = new_quaternion_expr (q);
|
|
break;
|
|
case '/':
|
|
if (is_float_val (e2)) {
|
|
QuatScale (q1, 1 / expr_float (e2), q);
|
|
} else {
|
|
QuatInverse (q2, q);
|
|
QuatScale (q2, expr_float (e1), q);
|
|
}
|
|
e = new_quaternion_expr (q);
|
|
break;
|
|
case '*':
|
|
if (is_quaternion(get_type (e2))) {
|
|
QuatMult (q1, q2, q);
|
|
} else {
|
|
QuatScale (q1, q2[3], q);
|
|
}
|
|
e = new_quaternion_expr (q);
|
|
break;
|
|
case EQ:
|
|
e = cmp_result_expr (QuatCompare (q1, q2));
|
|
break;
|
|
case NE:
|
|
e = cmp_result_expr (!QuatCompare (q1, q2));
|
|
break;
|
|
default:
|
|
internal_error (e1, 0);
|
|
}
|
|
e->file = e1->file;
|
|
e->line = e1->line;
|
|
return e;
|
|
}
|
|
|
|
static expr_t *
|
|
do_op_integer (int op, expr_t *e, expr_t *e1, expr_t *e2)
|
|
{
|
|
int isval1 = 0, isval2 = 0;
|
|
int val1 = 0, val2 = 0;
|
|
static int valid[] = {
|
|
'=', '+', '-', '*', '/', '&', '|', '^', '%',
|
|
SHL, SHR, AND, OR, LT, GT, LE, GE, EQ, NE, 0
|
|
};
|
|
|
|
if (!valid_op (op, valid))
|
|
return error (e1, "invalid operator for integer");
|
|
|
|
if (is_short_val (e1)) {
|
|
isval1 = 1;
|
|
val1 = expr_short (e1);
|
|
}
|
|
if (is_integer_val (e1)) {
|
|
isval1 = 1;
|
|
val1 = expr_integer (e1);
|
|
}
|
|
|
|
if (is_short_val (e2)) {
|
|
isval2 = 1;
|
|
val2 = expr_short (e2);
|
|
}
|
|
if (is_integer_val (e2)) {
|
|
isval2 = 1;
|
|
val2 = expr_integer (e2);
|
|
}
|
|
|
|
if (is_compare (op) || is_logic (op)) {
|
|
if (options.code.progsversion > PROG_ID_VERSION)
|
|
e->e.expr.type = &type_integer;
|
|
else
|
|
e->e.expr.type = &type_float;
|
|
} else {
|
|
e->e.expr.type = &type_integer;
|
|
}
|
|
|
|
if (op == '*' && isval1 && val1 == 1)
|
|
return e2;
|
|
if (op == '*' && isval2 && val2 == 1)
|
|
return e1;
|
|
if (op == '*' && isval1 && val1 == 0)
|
|
return e1;
|
|
if (op == '*' && isval2 && val2 == 0)
|
|
return e2;
|
|
if (op == '/' && isval2 && val2 == 1)
|
|
return e1;
|
|
if (op == '/' && isval2 && val2 == 0)
|
|
return error (e, "division by zero");
|
|
if (op == '/' && isval1 && val1 == 0)
|
|
return e1;
|
|
if (op == '+' && isval1 && val1 == 0)
|
|
return e2;
|
|
if (op == '+' && isval2 && val2 == 0)
|
|
return e1;
|
|
if (op == '-' && isval2 && val2 == 0)
|
|
return e1;
|
|
|
|
if (op == '=' || !isval1 || !isval2)
|
|
return e;
|
|
|
|
switch (op) {
|
|
case '+':
|
|
e = new_integer_expr (val1 + val2);
|
|
break;
|
|
case '-':
|
|
e = new_integer_expr (val1 - val2);
|
|
break;
|
|
case '*':
|
|
e = new_integer_expr (val1 * val2);
|
|
break;
|
|
case '/':
|
|
if (options.warnings.integer_divide)
|
|
warning (e2, "%d / %d == %d", val1, val2, val1 / val2);
|
|
e = new_integer_expr (val1 / val2);
|
|
break;
|
|
case '&':
|
|
e = new_integer_expr (val1 & val2);
|
|
break;
|
|
case '|':
|
|
e = new_integer_expr (val1 | val2);
|
|
break;
|
|
case '^':
|
|
e = new_integer_expr (val1 ^ val2);
|
|
break;
|
|
case '%':
|
|
e = new_integer_expr (val1 % val2);
|
|
break;
|
|
case SHL:
|
|
e = new_integer_expr (val1 << val2);
|
|
break;
|
|
case SHR:
|
|
e = new_integer_expr (val1 >> val2);
|
|
break;
|
|
case AND:
|
|
e = cmp_result_expr (val1 && val2);
|
|
break;
|
|
case OR:
|
|
e = cmp_result_expr (val1 || val2);
|
|
break;
|
|
case LT:
|
|
e = cmp_result_expr (val1 < val2);
|
|
break;
|
|
case GT:
|
|
e = cmp_result_expr (val1 > val2);
|
|
break;
|
|
case LE:
|
|
e = cmp_result_expr (val1 <= val2);
|
|
break;
|
|
case GE:
|
|
e = cmp_result_expr (val1 >= val2);
|
|
break;
|
|
case EQ:
|
|
e = cmp_result_expr (val1 == val2);
|
|
break;
|
|
case NE:
|
|
e = cmp_result_expr (val1 != val2);
|
|
break;
|
|
default:
|
|
internal_error (e1, 0);
|
|
}
|
|
e->file = e1->file;
|
|
e->line = e1->line;
|
|
return e;
|
|
}
|
|
|
|
static expr_t *
|
|
do_op_uinteger (int op, expr_t *e, expr_t *e1, expr_t *e2)
|
|
{
|
|
return e;
|
|
}
|
|
|
|
static expr_t *
|
|
do_op_short (int op, expr_t *e, expr_t *e1, expr_t *e2)
|
|
{
|
|
short i1, i2;
|
|
static int valid[] = {
|
|
'=', '+', '-', '*', '/', '&', '|', '^', '%',
|
|
SHL, SHR, AND, OR, LT, GT, LE, GE, EQ, NE, 0
|
|
};
|
|
|
|
if (!valid_op (op, valid))
|
|
return error (e1, "invalid operator for short");
|
|
|
|
if (is_compare (op) || is_logic (op)) {
|
|
if (options.code.progsversion > PROG_ID_VERSION)
|
|
e->e.expr.type = &type_integer;
|
|
else
|
|
e->e.expr.type = &type_float;
|
|
} else {
|
|
e->e.expr.type = &type_short;
|
|
}
|
|
|
|
if (op == '=' || !is_constant (e1) || !is_constant (e2))
|
|
return e;
|
|
|
|
i1 = expr_short (e1);
|
|
i2 = expr_short (e2);
|
|
|
|
switch (op) {
|
|
case '+':
|
|
e = new_short_expr (i1 + i2);
|
|
break;
|
|
case '-':
|
|
e = new_short_expr (i1 - i2);
|
|
break;
|
|
case '*':
|
|
e = new_short_expr (i1 * i2);
|
|
break;
|
|
case '/':
|
|
if (options.warnings.integer_divide)
|
|
warning (e2, "%d / %d == %d", i1, i2, i1 / i2);
|
|
e = new_short_expr (i1 / i2);
|
|
break;
|
|
case '&':
|
|
e = new_short_expr (i1 & i2);
|
|
break;
|
|
case '|':
|
|
e = new_short_expr (i1 | i2);
|
|
break;
|
|
case '^':
|
|
e = new_short_expr (i1 ^ i2);
|
|
break;
|
|
case '%':
|
|
e = new_short_expr (i1 % i2);
|
|
break;
|
|
case SHL:
|
|
e = new_short_expr (i1 << i2);
|
|
break;
|
|
case SHR:
|
|
e = new_short_expr (i1 >> i2);
|
|
break;
|
|
case AND:
|
|
e = new_short_expr (i1 && i2);
|
|
break;
|
|
case OR:
|
|
e = new_short_expr (i1 || i2);
|
|
break;
|
|
case LT:
|
|
e = cmp_result_expr (i1 < i2);
|
|
break;
|
|
case GT:
|
|
e = cmp_result_expr (i1 > i2);
|
|
break;
|
|
case LE:
|
|
e = cmp_result_expr (i1 <= i2);
|
|
break;
|
|
case GE:
|
|
e = cmp_result_expr (i1 >= i2);
|
|
break;
|
|
case EQ:
|
|
e = cmp_result_expr (i1 == i2);
|
|
break;
|
|
case NE:
|
|
e = cmp_result_expr (i1 != i2);
|
|
break;
|
|
default:
|
|
internal_error (e1, 0);
|
|
}
|
|
e->file = e1->file;
|
|
e->line = e1->line;
|
|
return e;
|
|
}
|
|
|
|
static expr_t *
|
|
do_op_struct (int op, expr_t *e, expr_t *e1, expr_t *e2)
|
|
{
|
|
type_t *type;
|
|
|
|
if (op != '=' && op != 'm')
|
|
return error (e1, "invalid operator for struct");
|
|
if ((type = get_type (e1)) != get_type (e2))
|
|
return type_mismatch (e1, e2, op);
|
|
e->e.expr.type = type;
|
|
return e;
|
|
}
|
|
|
|
static expr_t *
|
|
do_op_compound (int op, expr_t *e, expr_t *e1, expr_t *e2)
|
|
{
|
|
type_t *t1 = get_type (e1);
|
|
type_t *t2 = get_type (e2);
|
|
if (is_struct (t1) && is_struct (t2))
|
|
return do_op_struct (op, e, e1, e2);
|
|
if (is_scalar (t1) && is_scalar (t2)) {
|
|
if (is_enum (t1)) {
|
|
if (t2->type == ev_double)
|
|
return do_op_float (op, e, e1, e2);
|
|
if (t2->type == ev_double)
|
|
return do_op_float (op, e, e1, e2);
|
|
return do_op_integer (op, e, e1, e2);
|
|
}
|
|
if (is_enum (t2)) {
|
|
if (t1->type == ev_double)
|
|
return do_op_double (op, e, e1, e2);
|
|
if (t1->type == ev_float)
|
|
return do_op_float (op, e, e1, e2);
|
|
return do_op_integer (op, e, e1, e2);
|
|
}
|
|
}
|
|
return error (e1, "invalid operator for compound");
|
|
}
|
|
|
|
static operation_t *do_op[ev_type_count];
|
|
static expr_t *
|
|
do_op_invalid (int op, expr_t *e, expr_t *e1, expr_t *e2)
|
|
{
|
|
type_t *t1 = get_type (e1);
|
|
type_t *t2 = get_type (e2);
|
|
|
|
if (e->e.expr.op == 'm')
|
|
return e; // assume the rest of the compiler got it right
|
|
if (is_scalar (t1) && is_scalar (t2)) {
|
|
// one or both expressions are an enum, and the other is one of
|
|
// int, float or short. Treat the enum as the other type, or as
|
|
// the default type if both are enum.
|
|
etype_t t;
|
|
if (!is_enum (t1))
|
|
t = t1->type;
|
|
else if (!is_enum (t2))
|
|
t = t2->type;
|
|
else
|
|
t = type_default->type;
|
|
return do_op[t][t] (op, e, e1, e2);
|
|
} else {
|
|
dstring_t *enc1 = dstring_newstr ();
|
|
dstring_t *enc2 = dstring_newstr ();
|
|
|
|
print_type_str (enc1, t1);
|
|
print_type_str (enc2, t2);
|
|
|
|
//print_expr (e);
|
|
e1 = error (e1, "invalid operands for binary %s: %s %s",
|
|
get_op_string (op), enc1->str, enc2->str);
|
|
dstring_delete (enc1);
|
|
dstring_delete (enc2);
|
|
return e1;
|
|
}
|
|
}
|
|
|
|
static operation_t op_void[ev_type_count] = {
|
|
do_op_invalid, // ev_void
|
|
do_op_invalid, // ev_string
|
|
do_op_invalid, // ev_float
|
|
do_op_invalid, // ev_vector
|
|
do_op_invalid, // ev_entity
|
|
do_op_invalid, // ev_field
|
|
do_op_invalid, // ev_func
|
|
do_op_invalid, // ev_pointer
|
|
do_op_invalid, // ev_quaternion
|
|
do_op_invalid, // ev_integer
|
|
do_op_invalid, // ev_uinteger
|
|
do_op_invalid, // ev_short
|
|
do_op_invalid, // ev_double
|
|
do_op_invalid, // ev_invalid
|
|
};
|
|
|
|
static operation_t op_string[ev_type_count] = {
|
|
do_op_invalid, // ev_void
|
|
do_op_string, // ev_string
|
|
do_op_invalid, // ev_float
|
|
do_op_invalid, // ev_vector
|
|
do_op_invalid, // ev_entity
|
|
do_op_invalid, // ev_field
|
|
do_op_invalid, // ev_func
|
|
do_op_invalid, // ev_pointer
|
|
do_op_invalid, // ev_quaternion
|
|
do_op_invalid, // ev_integer
|
|
do_op_invalid, // ev_uinteger
|
|
do_op_invalid, // ev_short
|
|
do_op_invalid, // ev_double
|
|
do_op_invalid, // ev_invalid
|
|
};
|
|
|
|
static operation_t op_float[ev_type_count] = {
|
|
do_op_invalid, // ev_void
|
|
do_op_invalid, // ev_string
|
|
do_op_float, // ev_float
|
|
do_op_vector, // ev_vector
|
|
do_op_invalid, // ev_entity
|
|
do_op_invalid, // ev_field
|
|
do_op_invalid, // ev_func
|
|
do_op_invalid, // ev_pointer
|
|
do_op_quaternion, // ev_quaternion
|
|
do_op_float, // ev_integer
|
|
do_op_float, // ev_uinteger
|
|
do_op_float, // ev_short
|
|
do_op_double, // ev_double
|
|
do_op_invalid, // ev_invalid
|
|
};
|
|
|
|
static operation_t op_vector[ev_type_count] = {
|
|
do_op_invalid, // ev_void
|
|
do_op_invalid, // ev_string
|
|
do_op_vector, // ev_float
|
|
do_op_vector, // ev_vector
|
|
do_op_invalid, // ev_entity
|
|
do_op_invalid, // ev_field
|
|
do_op_invalid, // ev_func
|
|
do_op_invalid, // ev_pointer
|
|
do_op_invalid, // ev_quaternion
|
|
do_op_vector, // ev_integer
|
|
do_op_vector, // ev_uinteger
|
|
do_op_vector, // ev_short
|
|
do_op_vector, // ev_double
|
|
do_op_invalid, // ev_invalid
|
|
};
|
|
|
|
static operation_t op_entity[ev_type_count] = {
|
|
do_op_invalid, // ev_void
|
|
do_op_invalid, // ev_string
|
|
do_op_invalid, // ev_float
|
|
do_op_invalid, // ev_vector
|
|
do_op_entity, // ev_entity
|
|
do_op_entity, // ev_field
|
|
do_op_invalid, // ev_func
|
|
do_op_invalid, // ev_pointer
|
|
do_op_invalid, // ev_quaternion
|
|
do_op_invalid, // ev_integer
|
|
do_op_invalid, // ev_uinteger
|
|
do_op_invalid, // ev_short
|
|
do_op_invalid, // ev_double
|
|
do_op_invalid, // ev_invalid
|
|
};
|
|
|
|
static operation_t op_field[ev_type_count] = {
|
|
do_op_invalid, // ev_void
|
|
do_op_invalid, // ev_string
|
|
do_op_invalid, // ev_float
|
|
do_op_invalid, // ev_vector
|
|
do_op_invalid, // ev_entity
|
|
do_op_field, // ev_field
|
|
do_op_invalid, // ev_func
|
|
do_op_invalid, // ev_pointer
|
|
do_op_invalid, // ev_quaternion
|
|
do_op_invalid, // ev_integer
|
|
do_op_invalid, // ev_uinteger
|
|
do_op_invalid, // ev_short
|
|
do_op_invalid, // ev_double
|
|
do_op_invalid, // ev_invalid
|
|
};
|
|
|
|
static operation_t op_func[ev_type_count] = {
|
|
do_op_func, // ev_void
|
|
do_op_func, // ev_string
|
|
do_op_func, // ev_float
|
|
do_op_func, // ev_vector
|
|
do_op_func, // ev_entity
|
|
do_op_func, // ev_field
|
|
do_op_func, // ev_func
|
|
do_op_func, // ev_pointer
|
|
do_op_func, // ev_quaternion
|
|
do_op_func, // ev_integer
|
|
do_op_func, // ev_uinteger
|
|
do_op_func, // ev_short
|
|
do_op_func, // ev_double
|
|
do_op_func, // ev_invalid
|
|
};
|
|
|
|
static operation_t op_pointer[ev_type_count] = {
|
|
do_op_pointer, // ev_void
|
|
do_op_pointer, // ev_string
|
|
do_op_pointer, // ev_float
|
|
do_op_pointer, // ev_vector
|
|
do_op_pointer, // ev_entity
|
|
do_op_pointer, // ev_field
|
|
do_op_pointer, // ev_func
|
|
do_op_pointer, // ev_pointer
|
|
do_op_pointer, // ev_quaternion
|
|
do_op_pointer, // ev_integer
|
|
do_op_pointer, // ev_uinteger
|
|
do_op_pointer, // ev_short
|
|
do_op_pointer, // ev_double
|
|
do_op_pointer, // ev_invalid
|
|
};
|
|
|
|
static operation_t op_quaternion[ev_type_count] = {
|
|
do_op_invalid, // ev_void
|
|
do_op_invalid, // ev_string
|
|
do_op_quaternion, // ev_float
|
|
do_op_quatvect, // ev_vector
|
|
do_op_invalid, // ev_entity
|
|
do_op_invalid, // ev_field
|
|
do_op_invalid, // ev_func
|
|
do_op_invalid, // ev_pointer
|
|
do_op_quaternion, // ev_quaternion
|
|
do_op_quaternion, // ev_integer
|
|
do_op_quaternion, // ev_uinteger
|
|
do_op_quaternion, // ev_short
|
|
do_op_quaternion, // ev_double
|
|
do_op_invalid, // ev_invalid
|
|
};
|
|
|
|
static operation_t op_integer[ev_type_count] = {
|
|
do_op_invalid, // ev_void
|
|
do_op_invalid, // ev_string
|
|
do_op_float, // ev_float
|
|
do_op_vector, // ev_vector
|
|
do_op_invalid, // ev_entity
|
|
do_op_invalid, // ev_field
|
|
do_op_invalid, // ev_func
|
|
do_op_invalid, // ev_pointer
|
|
do_op_quaternion, // ev_quaternion
|
|
do_op_integer, // ev_integer
|
|
do_op_uinteger, // ev_uinteger
|
|
do_op_integer, // ev_short
|
|
do_op_double, // ev_double
|
|
do_op_invalid, // ev_invalid
|
|
};
|
|
|
|
static operation_t op_uinteger[ev_type_count] = {
|
|
do_op_invalid, // ev_void
|
|
do_op_invalid, // ev_string
|
|
do_op_float, // ev_float
|
|
do_op_vector, // ev_vector
|
|
do_op_invalid, // ev_entity
|
|
do_op_invalid, // ev_field
|
|
do_op_invalid, // ev_func
|
|
do_op_invalid, // ev_pointer
|
|
do_op_quaternion, // ev_quaternion
|
|
do_op_uinteger, // ev_integer
|
|
do_op_uinteger, // ev_uinteger
|
|
do_op_uinteger, // ev_short
|
|
do_op_double, // ev_double
|
|
do_op_invalid, // ev_invalid
|
|
};
|
|
|
|
static operation_t op_short[ev_type_count] = {
|
|
do_op_invalid, // ev_void
|
|
do_op_invalid, // ev_string
|
|
do_op_float, // ev_float
|
|
do_op_vector, // ev_vector
|
|
do_op_invalid, // ev_entity
|
|
do_op_invalid, // ev_field
|
|
do_op_invalid, // ev_func
|
|
do_op_invalid, // ev_pointer
|
|
do_op_quaternion, // ev_quaternion
|
|
do_op_integer, // ev_integer
|
|
do_op_uinteger, // ev_uinteger
|
|
do_op_short, // ev_short
|
|
do_op_double, // ev_double
|
|
do_op_invalid, // ev_invalid
|
|
};
|
|
|
|
static operation_t op_double[ev_type_count] = {
|
|
do_op_invalid, // ev_void
|
|
do_op_invalid, // ev_string
|
|
do_op_float, // ev_float
|
|
do_op_vector, // ev_vector
|
|
do_op_invalid, // ev_entity
|
|
do_op_invalid, // ev_field
|
|
do_op_invalid, // ev_func
|
|
do_op_invalid, // ev_pointer
|
|
do_op_quaternion, // ev_quaternion
|
|
do_op_integer, // ev_integer
|
|
do_op_uinteger, // ev_uinteger
|
|
do_op_short, // ev_short
|
|
do_op_double, // ev_double
|
|
do_op_invalid, // ev_invalid
|
|
};
|
|
|
|
static operation_t op_compound[ev_type_count] = {
|
|
do_op_invalid, // ev_void
|
|
do_op_invalid, // ev_string
|
|
do_op_compound, // ev_float
|
|
do_op_invalid, // ev_vector
|
|
do_op_invalid, // ev_entity
|
|
do_op_invalid, // ev_field
|
|
do_op_invalid, // ev_func
|
|
do_op_invalid, // ev_pointer
|
|
do_op_invalid, // ev_quaternion
|
|
do_op_compound, // ev_integer
|
|
do_op_compound, // ev_uinteger
|
|
do_op_compound, // ev_short
|
|
do_op_compound, // ev_double
|
|
do_op_compound, // ev_invalid
|
|
};
|
|
|
|
static operation_t *do_op[ev_type_count] = {
|
|
op_void, // ev_void
|
|
op_string, // ev_string
|
|
op_float, // ev_float
|
|
op_vector, // ev_vector
|
|
op_entity, // ev_entity
|
|
op_field, // ev_field
|
|
op_func, // ev_func
|
|
op_pointer, // ev_pointer
|
|
op_quaternion, // ev_quaternion
|
|
op_integer, // ev_integer
|
|
op_uinteger, // ev_uinteger
|
|
op_short, // ev_short
|
|
op_double, // ev_double
|
|
op_compound, // ev_invalid
|
|
};
|
|
|
|
static unaryop_t do_unary_op[ev_type_count];
|
|
static expr_t *
|
|
uop_invalid (int op, expr_t *e, expr_t *e1)
|
|
{
|
|
type_t *t1 = get_type (e1);
|
|
if (is_scalar (t1)) {
|
|
// The expression is an enum. Treat the enum as the default type.
|
|
etype_t t;
|
|
t = type_default->type;
|
|
return do_unary_op[t] (op, e, e1);
|
|
} else {
|
|
dstring_t *enc1 = dstring_newstr ();
|
|
|
|
print_type_str (enc1, t1);
|
|
|
|
//print_expr (e);
|
|
e1 = error (e1, "invalid operand for unary %s: %s",
|
|
get_op_string (op), enc1->str);
|
|
dstring_delete (enc1);
|
|
return e1;
|
|
}
|
|
}
|
|
|
|
static expr_t *
|
|
uop_string (int op, expr_t *e, expr_t *e1)
|
|
{
|
|
// + - ! ~ *
|
|
static int valid[] = { '!', 0 };
|
|
const char *s;
|
|
|
|
if (!valid_op (op, valid))
|
|
return error (e1, "invalid unary operator for string: %s",
|
|
get_op_string (op));
|
|
|
|
if (!is_constant (e1))
|
|
return e;
|
|
|
|
s = expr_string (e1);
|
|
return cmp_result_expr (!s || !s[0]);
|
|
}
|
|
|
|
static expr_t *
|
|
uop_float (int op, expr_t *e, expr_t *e1)
|
|
{
|
|
static int valid[] = { '+', '-', '!', '~', 'C', 0 };
|
|
type_t *type;
|
|
|
|
if (!valid_op (op, valid))
|
|
return error (e1, "invalid unary operator for float: %s",
|
|
get_op_string (op));
|
|
if (op == '+')
|
|
return e1;
|
|
type = get_type (e);
|
|
if (op == 'C' && !is_integer(type) && !is_double(type))
|
|
return error (e1, "invalid cast of float");
|
|
if (!is_constant (e1))
|
|
return e;
|
|
switch (op) {
|
|
case '-':
|
|
return new_float_expr (-expr_float (e1));
|
|
case '!':
|
|
print_type (get_type (e));
|
|
return cmp_result_expr (!expr_float (e1));
|
|
case '~':
|
|
return new_float_expr (~(int) expr_float (e1));
|
|
case 'C':
|
|
if (is_integer(type)) {
|
|
return new_integer_expr (expr_float (e1));
|
|
} else {
|
|
return new_double_expr (expr_float (e1));
|
|
}
|
|
}
|
|
internal_error (e, "float unary op blew up");
|
|
}
|
|
|
|
static expr_t *
|
|
uop_vector (int op, expr_t *e, expr_t *e1)
|
|
{
|
|
static int valid[] = { '+', '-', '!', 0 };
|
|
vec3_t v;
|
|
|
|
if (!valid_op (op, valid))
|
|
return error (e1, "invalid unary operator for vector: %s",
|
|
get_op_string (op));
|
|
if (op == '+')
|
|
return e1;
|
|
if (!is_constant (e1))
|
|
return e;
|
|
switch (op) {
|
|
case '-':
|
|
VectorNegate (expr_vector (e), v);
|
|
return new_vector_expr (v);
|
|
case '!':
|
|
return cmp_result_expr (!VectorIsZero (expr_vector (e1)));
|
|
}
|
|
internal_error (e, "vector unary op blew up");
|
|
}
|
|
|
|
static expr_t *
|
|
uop_entity (int op, expr_t *e, expr_t *e1)
|
|
{
|
|
static int valid[] = { '!', 0 };
|
|
|
|
if (!valid_op (op, valid))
|
|
return error (e1, "invalid unary operator for entity: %s",
|
|
get_op_string (op));
|
|
if (!is_constant (e1))
|
|
return e;
|
|
switch (op) {
|
|
case '!':
|
|
internal_error (e, "!entity");
|
|
}
|
|
internal_error (e, "entity unary op blew up");
|
|
}
|
|
|
|
static expr_t *
|
|
uop_field (int op, expr_t *e, expr_t *e1)
|
|
{
|
|
static int valid[] = { '!', 0 };
|
|
|
|
if (!valid_op (op, valid))
|
|
return error (e1, "invalid unary operator for field: %s",
|
|
get_op_string (op));
|
|
if (!is_constant (e1))
|
|
return e;
|
|
switch (op) {
|
|
case '!':
|
|
internal_error (e, "!field");
|
|
}
|
|
internal_error (e, "field unary op blew up");
|
|
}
|
|
|
|
static expr_t *
|
|
uop_func (int op, expr_t *e, expr_t *e1)
|
|
{
|
|
static int valid[] = { '!', 0 };
|
|
|
|
if (!valid_op (op, valid))
|
|
return error (e1, "invalid unary operator for func: %s",
|
|
get_op_string (op));
|
|
if (!is_constant (e1))
|
|
return e;
|
|
switch (op) {
|
|
case '!':
|
|
internal_error (e, "!func");
|
|
}
|
|
internal_error (e, "func unary op blew up");
|
|
}
|
|
|
|
static expr_t *
|
|
uop_pointer (int op, expr_t *e, expr_t *e1)
|
|
{
|
|
static int valid[] = { '!', '.', 0 };
|
|
|
|
if (!valid_op (op, valid))
|
|
return error (e1, "invalid unary operator for pointer: %s",
|
|
get_op_string (op));
|
|
if (!is_constant (e1))
|
|
return e;
|
|
switch (op) {
|
|
case '!':
|
|
internal_error (e, "!pointer");
|
|
case '.':
|
|
debug (e, ".pointer");
|
|
return e;
|
|
}
|
|
internal_error (e, "pointer unary op blew up");
|
|
}
|
|
|
|
static expr_t *
|
|
uop_quaternion (int op, expr_t *e, expr_t *e1)
|
|
{
|
|
static int valid[] = { '+', '-', '!', '~', 0 };
|
|
quat_t q;
|
|
|
|
if (!valid_op (op, valid))
|
|
return error (e1, "invalid unary operator for quaternion: %s",
|
|
get_op_string (op));
|
|
if (op == '+')
|
|
return e1;
|
|
if (!is_constant (e1))
|
|
return e;
|
|
switch (op) {
|
|
case '-':
|
|
QuatNegate (expr_vector (e), q);
|
|
return new_quaternion_expr (q);
|
|
case '!':
|
|
return cmp_result_expr (!QuatIsZero (expr_quaternion (e1)));
|
|
case '~':
|
|
QuatConj (expr_vector (e), q);
|
|
return new_quaternion_expr (q);
|
|
}
|
|
internal_error (e, "quaternion unary op blew up");
|
|
}
|
|
|
|
static expr_t *
|
|
uop_integer (int op, expr_t *e, expr_t *e1)
|
|
{
|
|
static int valid[] = { '+', '-', '!', '~', 'C', 0 };
|
|
|
|
if (!valid_op (op, valid))
|
|
return error (e1, "invalid unary operator for int: %s",
|
|
get_op_string (op));
|
|
if (op == '+')
|
|
return e1;
|
|
if (op == 'C' && !is_float(get_type (e)))
|
|
return error (e1, "invalid cast of int");
|
|
if (!is_constant (e1))
|
|
return e;
|
|
switch (op) {
|
|
case '-':
|
|
return new_integer_expr (-expr_integer (e1));
|
|
case '!':
|
|
return cmp_result_expr (!expr_integer (e1));
|
|
case '~':
|
|
return new_integer_expr (~expr_integer (e1));
|
|
case 'C':
|
|
return new_float_expr (expr_integer (e1));
|
|
}
|
|
internal_error (e, "integer unary op blew up");
|
|
}
|
|
|
|
static expr_t *
|
|
uop_uinteger (int op, expr_t *e, expr_t *e1)
|
|
{
|
|
static int valid[] = { '+', '-', '!', '~', 0 };
|
|
|
|
if (!valid_op (op, valid))
|
|
return error (e1, "invalid unary operator for uint: %s",
|
|
get_op_string (op));
|
|
if (op == '+')
|
|
return e1;
|
|
if (!is_constant (e1))
|
|
return e;
|
|
switch (op) {
|
|
case '-':
|
|
return new_uinteger_expr (-expr_uinteger (e1));
|
|
case '!':
|
|
return cmp_result_expr (!expr_uinteger (e1));
|
|
case '~':
|
|
return new_uinteger_expr (~expr_uinteger (e1));
|
|
}
|
|
internal_error (e, "uinteger unary op blew up");
|
|
}
|
|
|
|
static expr_t *
|
|
uop_short (int op, expr_t *e, expr_t *e1)
|
|
{
|
|
static int valid[] = { '+', '-', '!', '~', 0 };
|
|
|
|
if (!valid_op (op, valid))
|
|
return error (e1, "invalid unary operator for short: %s",
|
|
get_op_string (op));
|
|
if (op == '+')
|
|
return e1;
|
|
if (!is_constant (e1))
|
|
return e;
|
|
switch (op) {
|
|
case '-':
|
|
return new_short_expr (-expr_short (e1));
|
|
case '!':
|
|
return cmp_result_expr (!expr_short (e1));
|
|
case '~':
|
|
return new_short_expr (~expr_short (e1));
|
|
}
|
|
internal_error (e, "short unary op blew up");
|
|
}
|
|
|
|
static expr_t *
|
|
uop_double (int op, expr_t *e, expr_t *e1)
|
|
{
|
|
static int valid[] = { '+', '-', '!', 'C', 0 };
|
|
type_t *type;
|
|
|
|
if (!valid_op (op, valid))
|
|
return error (e1, "invalid unary operator for double: %s",
|
|
get_op_string (op));
|
|
if (op == '+')
|
|
return e1;
|
|
type = get_type (e);
|
|
if (op == 'C' && !is_integer(type) && !is_float(type))
|
|
return error (e1, "invalid cast of double");
|
|
if (!is_constant (e1))
|
|
return e;
|
|
switch (op) {
|
|
case '-':
|
|
return new_double_expr (-expr_double (e1));
|
|
case '!':
|
|
print_type (get_type (e));
|
|
return cmp_result_expr (!expr_double (e1));
|
|
case 'C':
|
|
if (is_integer(type)) {
|
|
return new_integer_expr (expr_double (e1));
|
|
} else {
|
|
return new_float_expr (expr_double (e1));
|
|
}
|
|
}
|
|
internal_error (e, "float unary op blew up");
|
|
}
|
|
|
|
static expr_t *
|
|
uop_compound (int op, expr_t *e, expr_t *e1)
|
|
{
|
|
type_t *t1 = get_type (e1);
|
|
|
|
if (is_scalar (t1)) {
|
|
if (is_enum (t1)) {
|
|
return uop_integer (op, e, e1);
|
|
}
|
|
}
|
|
return error (e1, "invalid operand for unary %s", get_op_string (op));
|
|
}
|
|
|
|
static unaryop_t do_unary_op[ev_type_count] = {
|
|
uop_invalid, // ev_void
|
|
uop_string, // ev_string
|
|
uop_float, // ev_float
|
|
uop_vector, // ev_vector
|
|
uop_entity, // ev_entity
|
|
uop_field, // ev_field
|
|
uop_func, // ev_func
|
|
uop_pointer, // ev_pointer
|
|
uop_quaternion, // ev_quaternion
|
|
uop_integer, // ev_integer
|
|
uop_uinteger, // ev_uinteger
|
|
uop_short, // ev_short
|
|
uop_double, // ev_double
|
|
uop_compound, // ev_invalid
|
|
};
|
|
|
|
expr_t *
|
|
fold_constants (expr_t *e)
|
|
{
|
|
int op;
|
|
expr_t *e1, *e2;
|
|
etype_t t1, t2;
|
|
|
|
if (e->type == ex_uexpr) {
|
|
e1 = e->e.expr.e1;
|
|
if (!e1) {
|
|
return e;
|
|
}
|
|
op = e->e.expr.op;
|
|
if (op == 'A' || op == 'g' || op == 'r')
|
|
return e;
|
|
t1 = extract_type (e1);
|
|
if (t1 >= ev_type_count || !do_unary_op[t1]) {
|
|
print_expr (e);
|
|
internal_error (e, "invalid type: %d", t1);
|
|
}
|
|
return do_unary_op[t1] (op, e, e1);
|
|
} else if (e->type == ex_expr) {
|
|
e1 = e->e.expr.e1;
|
|
e2 = e->e.expr.e2;
|
|
if (!is_constant (e1) && !is_constant (e2)) {
|
|
return e;
|
|
}
|
|
|
|
op = e->e.expr.op;
|
|
if (op == 'A' || op == 'i' || op == 'n' || op == 'c' || op == 's') {
|
|
return e;
|
|
}
|
|
|
|
t1 = extract_type (e1);
|
|
t2 = extract_type (e2);
|
|
|
|
if (t1 >= ev_type_count || t2 >= ev_type_count
|
|
|| !do_op[t1] || !do_op[t1][t2])
|
|
internal_error (e, "invalid type %d %d", t1, t2);
|
|
return do_op[t1][t2] (op, e, e1, e2);
|
|
}
|
|
return e;
|
|
}
|