mirror of
https://github.com/dhewm/dhewm3.git
synced 2024-11-24 13:21:41 +00:00
2649 lines
71 KiB
C++
2649 lines
71 KiB
C++
/*
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===========================================================================
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Doom 3 GPL Source Code
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Copyright (C) 1999-2011 id Software LLC, a ZeniMax Media company.
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This file is part of the Doom 3 GPL Source Code ("Doom 3 Source Code").
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Doom 3 Source Code is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Doom 3 Source Code 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. See the
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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 Doom 3 Source Code. If not, see <http://www.gnu.org/licenses/>.
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In addition, the Doom 3 Source Code is also subject to certain additional terms. You should have received a copy of these additional terms immediately following the terms and conditions of the GNU General Public License which accompanied the Doom 3 Source Code. If not, please request a copy in writing from id Software at the address below.
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If you have questions concerning this license or the applicable additional terms, you may contact in writing id Software LLC, c/o ZeniMax Media Inc., Suite 120, Rockville, Maryland 20850 USA.
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===========================================================================
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*/
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#include "../../idlib/precompiled.h"
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#pragma hdrstop
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#include "../Game_local.h"
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#define FUNCTION_PRIORITY 2
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#define INT_PRIORITY 2
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#define NOT_PRIORITY 5
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#define TILDE_PRIORITY 5
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#define TOP_PRIORITY 7
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bool idCompiler::punctuationValid[ 256 ];
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char *idCompiler::punctuation[] = {
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"+=", "-=", "*=", "/=", "%=", "&=", "|=", "++", "--",
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"&&", "||", "<=", ">=", "==", "!=", "::", ";", ",",
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"~", "!", "*", "/", "%", "(", ")", "-", "+",
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"=", "[", "]", ".", "<", ">" , "&", "|", ":", NULL
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};
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opcode_t idCompiler::opcodes[] = {
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{ "<RETURN>", "RETURN", -1, false, &def_void, &def_void, &def_void },
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{ "++", "UINC_F", 1, true, &def_float, &def_void, &def_void },
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{ "++", "UINCP_F", 1, true, &def_object, &def_field, &def_float },
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{ "--", "UDEC_F", 1, true, &def_float, &def_void, &def_void },
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{ "--", "UDECP_F", 1, true, &def_object, &def_field, &def_float },
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{ "~", "COMP_F", -1, false, &def_float, &def_void, &def_float },
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{ "*", "MUL_F", 3, false, &def_float, &def_float, &def_float },
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{ "*", "MUL_V", 3, false, &def_vector, &def_vector, &def_float },
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{ "*", "MUL_FV", 3, false, &def_float, &def_vector, &def_vector },
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{ "*", "MUL_VF", 3, false, &def_vector, &def_float, &def_vector },
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{ "/", "DIV", 3, false, &def_float, &def_float, &def_float },
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{ "%", "MOD_F", 3, false, &def_float, &def_float, &def_float },
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{ "+", "ADD_F", 4, false, &def_float, &def_float, &def_float },
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{ "+", "ADD_V", 4, false, &def_vector, &def_vector, &def_vector },
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{ "+", "ADD_S", 4, false, &def_string, &def_string, &def_string },
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{ "+", "ADD_FS", 4, false, &def_float, &def_string, &def_string },
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{ "+", "ADD_SF", 4, false, &def_string, &def_float, &def_string },
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{ "+", "ADD_VS", 4, false, &def_vector, &def_string, &def_string },
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{ "+", "ADD_SV", 4, false, &def_string, &def_vector, &def_string },
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{ "-", "SUB_F", 4, false, &def_float, &def_float, &def_float },
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{ "-", "SUB_V", 4, false, &def_vector, &def_vector, &def_vector },
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{ "==", "EQ_F", 5, false, &def_float, &def_float, &def_float },
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{ "==", "EQ_V", 5, false, &def_vector, &def_vector, &def_float },
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{ "==", "EQ_S", 5, false, &def_string, &def_string, &def_float },
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{ "==", "EQ_E", 5, false, &def_entity, &def_entity, &def_float },
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{ "==", "EQ_EO", 5, false, &def_entity, &def_object, &def_float },
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{ "==", "EQ_OE", 5, false, &def_object, &def_entity, &def_float },
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{ "==", "EQ_OO", 5, false, &def_object, &def_object, &def_float },
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{ "!=", "NE_F", 5, false, &def_float, &def_float, &def_float },
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{ "!=", "NE_V", 5, false, &def_vector, &def_vector, &def_float },
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{ "!=", "NE_S", 5, false, &def_string, &def_string, &def_float },
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{ "!=", "NE_E", 5, false, &def_entity, &def_entity, &def_float },
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{ "!=", "NE_EO", 5, false, &def_entity, &def_object, &def_float },
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{ "!=", "NE_OE", 5, false, &def_object, &def_entity, &def_float },
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{ "!=", "NE_OO", 5, false, &def_object, &def_object, &def_float },
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{ "<=", "LE", 5, false, &def_float, &def_float, &def_float },
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{ ">=", "GE", 5, false, &def_float, &def_float, &def_float },
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{ "<", "LT", 5, false, &def_float, &def_float, &def_float },
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{ ">", "GT", 5, false, &def_float, &def_float, &def_float },
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{ ".", "INDIRECT_F", 1, false, &def_object, &def_field, &def_float },
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{ ".", "INDIRECT_V", 1, false, &def_object, &def_field, &def_vector },
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{ ".", "INDIRECT_S", 1, false, &def_object, &def_field, &def_string },
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{ ".", "INDIRECT_E", 1, false, &def_object, &def_field, &def_entity },
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{ ".", "INDIRECT_BOOL", 1, false, &def_object, &def_field, &def_boolean },
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{ ".", "INDIRECT_OBJ", 1, false, &def_object, &def_field, &def_object },
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{ ".", "ADDRESS", 1, false, &def_entity, &def_field, &def_pointer },
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{ ".", "EVENTCALL", 2, false, &def_entity, &def_function, &def_void },
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{ ".", "OBJECTCALL", 2, false, &def_object, &def_function, &def_void },
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{ ".", "SYSCALL", 2, false, &def_void, &def_function, &def_void },
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{ "=", "STORE_F", 6, true, &def_float, &def_float, &def_float },
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{ "=", "STORE_V", 6, true, &def_vector, &def_vector, &def_vector },
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{ "=", "STORE_S", 6, true, &def_string, &def_string, &def_string },
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{ "=", "STORE_ENT", 6, true, &def_entity, &def_entity, &def_entity },
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{ "=", "STORE_BOOL", 6, true, &def_boolean, &def_boolean, &def_boolean },
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{ "=", "STORE_OBJENT", 6, true, &def_object, &def_entity, &def_object },
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{ "=", "STORE_OBJ", 6, true, &def_object, &def_object, &def_object },
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{ "=", "STORE_OBJENT", 6, true, &def_entity, &def_object, &def_object },
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{ "=", "STORE_FTOS", 6, true, &def_string, &def_float, &def_string },
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{ "=", "STORE_BTOS", 6, true, &def_string, &def_boolean, &def_string },
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{ "=", "STORE_VTOS", 6, true, &def_string, &def_vector, &def_string },
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{ "=", "STORE_FTOBOOL", 6, true, &def_boolean, &def_float, &def_boolean },
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{ "=", "STORE_BOOLTOF", 6, true, &def_float, &def_boolean, &def_float },
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{ "=", "STOREP_F", 6, true, &def_pointer, &def_float, &def_float },
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{ "=", "STOREP_V", 6, true, &def_pointer, &def_vector, &def_vector },
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{ "=", "STOREP_S", 6, true, &def_pointer, &def_string, &def_string },
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{ "=", "STOREP_ENT", 6, true, &def_pointer, &def_entity, &def_entity },
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{ "=", "STOREP_FLD", 6, true, &def_pointer, &def_field, &def_field },
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{ "=", "STOREP_BOOL", 6, true, &def_pointer, &def_boolean, &def_boolean },
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{ "=", "STOREP_OBJ", 6, true, &def_pointer, &def_object, &def_object },
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{ "=", "STOREP_OBJENT", 6, true, &def_pointer, &def_object, &def_object },
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{ "<=>", "STOREP_FTOS", 6, true, &def_pointer, &def_float, &def_string },
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{ "<=>", "STOREP_BTOS", 6, true, &def_pointer, &def_boolean, &def_string },
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{ "<=>", "STOREP_VTOS", 6, true, &def_pointer, &def_vector, &def_string },
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{ "<=>", "STOREP_FTOBOOL", 6, true, &def_pointer, &def_float, &def_boolean },
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{ "<=>", "STOREP_BOOLTOF", 6, true, &def_pointer, &def_boolean, &def_float },
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{ "*=", "UMUL_F", 6, true, &def_float, &def_float, &def_void },
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{ "*=", "UMUL_V", 6, true, &def_vector, &def_float, &def_void },
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{ "/=", "UDIV_F", 6, true, &def_float, &def_float, &def_void },
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{ "/=", "UDIV_V", 6, true, &def_vector, &def_float, &def_void },
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{ "%=", "UMOD_F", 6, true, &def_float, &def_float, &def_void },
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{ "+=", "UADD_F", 6, true, &def_float, &def_float, &def_void },
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{ "+=", "UADD_V", 6, true, &def_vector, &def_vector, &def_void },
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{ "-=", "USUB_F", 6, true, &def_float, &def_float, &def_void },
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{ "-=", "USUB_V", 6, true, &def_vector, &def_vector, &def_void },
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{ "&=", "UAND_F", 6, true, &def_float, &def_float, &def_void },
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{ "|=", "UOR_F", 6, true, &def_float, &def_float, &def_void },
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{ "!", "NOT_BOOL", -1, false, &def_boolean, &def_void, &def_float },
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{ "!", "NOT_F", -1, false, &def_float, &def_void, &def_float },
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{ "!", "NOT_V", -1, false, &def_vector, &def_void, &def_float },
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{ "!", "NOT_S", -1, false, &def_vector, &def_void, &def_float },
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{ "!", "NOT_ENT", -1, false, &def_entity, &def_void, &def_float },
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{ "<NEG_F>", "NEG_F", -1, false, &def_float, &def_void, &def_float },
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{ "<NEG_V>", "NEG_V", -1, false, &def_vector, &def_void, &def_vector },
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{ "int", "INT_F", -1, false, &def_float, &def_void, &def_float },
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{ "<IF>", "IF", -1, false, &def_float, &def_jumpoffset, &def_void },
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{ "<IFNOT>", "IFNOT", -1, false, &def_float, &def_jumpoffset, &def_void },
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// calls returns REG_RETURN
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{ "<CALL>", "CALL", -1, false, &def_function, &def_argsize, &def_void },
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{ "<THREAD>", "THREAD", -1, false, &def_function, &def_argsize, &def_void },
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{ "<THREAD>", "OBJTHREAD", -1, false, &def_function, &def_argsize, &def_void },
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{ "<PUSH>", "PUSH_F", -1, false, &def_float, &def_float, &def_void },
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{ "<PUSH>", "PUSH_V", -1, false, &def_vector, &def_vector, &def_void },
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{ "<PUSH>", "PUSH_S", -1, false, &def_string, &def_string, &def_void },
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{ "<PUSH>", "PUSH_ENT", -1, false, &def_entity, &def_entity, &def_void },
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{ "<PUSH>", "PUSH_OBJ", -1, false, &def_object, &def_object, &def_void },
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{ "<PUSH>", "PUSH_OBJENT", -1, false, &def_entity, &def_object, &def_void },
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{ "<PUSH>", "PUSH_FTOS", -1, false, &def_string, &def_float, &def_void },
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{ "<PUSH>", "PUSH_BTOF", -1, false, &def_float, &def_boolean, &def_void },
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{ "<PUSH>", "PUSH_FTOB", -1, false, &def_boolean, &def_float, &def_void },
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{ "<PUSH>", "PUSH_VTOS", -1, false, &def_string, &def_vector, &def_void },
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{ "<PUSH>", "PUSH_BTOS", -1, false, &def_string, &def_boolean, &def_void },
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{ "<GOTO>", "GOTO", -1, false, &def_jumpoffset, &def_void, &def_void },
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{ "&&", "AND", 7, false, &def_float, &def_float, &def_float },
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{ "&&", "AND_BOOLF", 7, false, &def_boolean, &def_float, &def_float },
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{ "&&", "AND_FBOOL", 7, false, &def_float, &def_boolean, &def_float },
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{ "&&", "AND_BOOLBOOL", 7, false, &def_boolean, &def_boolean, &def_float },
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{ "||", "OR", 7, false, &def_float, &def_float, &def_float },
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{ "||", "OR_BOOLF", 7, false, &def_boolean, &def_float, &def_float },
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{ "||", "OR_FBOOL", 7, false, &def_float, &def_boolean, &def_float },
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{ "||", "OR_BOOLBOOL", 7, false, &def_boolean, &def_boolean, &def_float },
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{ "&", "BITAND", 3, false, &def_float, &def_float, &def_float },
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{ "|", "BITOR", 3, false, &def_float, &def_float, &def_float },
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{ "<BREAK>", "BREAK", -1, false, &def_float, &def_void, &def_void },
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{ "<CONTINUE>", "CONTINUE", -1, false, &def_float, &def_void, &def_void },
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{ NULL }
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};
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/*
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================
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idCompiler::idCompiler()
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================
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*/
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idCompiler::idCompiler() {
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char **ptr;
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int id;
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// make sure we have the right # of opcodes in the table
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assert( ( sizeof( opcodes ) / sizeof( opcodes[ 0 ] ) ) == ( NUM_OPCODES + 1 ) );
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eof = true;
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parserPtr = &parser;
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callthread = false;
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loopDepth = 0;
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eof = false;
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braceDepth = 0;
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immediateType = NULL;
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basetype = NULL;
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currentLineNumber = 0;
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currentFileNumber = 0;
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errorCount = 0;
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console = false;
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scope = &def_namespace;
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memset( &immediate, 0, sizeof( immediate ) );
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memset( punctuationValid, 0, sizeof( punctuationValid ) );
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for( ptr = punctuation; *ptr != NULL; ptr++ ) {
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id = parserPtr->GetPunctuationId( *ptr );
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if ( ( id >= 0 ) && ( id < 256 ) ) {
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punctuationValid[ id ] = true;
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}
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}
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}
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/*
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============
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idCompiler::Error
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Aborts the current file load
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============
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*/
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void idCompiler::Error( const char *message, ... ) const {
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va_list argptr;
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char string[ 1024 ];
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va_start( argptr, message );
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vsprintf( string, message, argptr );
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va_end( argptr );
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throw idCompileError( string );
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}
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/*
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============
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idCompiler::Warning
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Prints a warning about the current line
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============
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*/
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void idCompiler::Warning( const char *message, ... ) const {
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va_list argptr;
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char string[ 1024 ];
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va_start( argptr, message );
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vsprintf( string, message, argptr );
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va_end( argptr );
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parserPtr->Warning( "%s", string );
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}
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/*
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============
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idCompiler::VirtualFunctionConstant
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Creates a def for an index into a virtual function table
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============
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*/
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ID_INLINE idVarDef *idCompiler::VirtualFunctionConstant( idVarDef *func ) {
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eval_t eval;
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memset( &eval, 0, sizeof( eval ) );
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eval._int = func->scope->TypeDef()->GetFunctionNumber( func->value.functionPtr );
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if ( eval._int < 0 ) {
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Error( "Function '%s' not found in scope '%s'", func->Name(), func->scope->Name() );
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}
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return GetImmediate( &type_virtualfunction, &eval, "" );
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}
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/*
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============
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idCompiler::SizeConstant
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Creates a def for a size constant
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============
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*/
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ID_INLINE idVarDef *idCompiler::SizeConstant( int size ) {
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eval_t eval;
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memset( &eval, 0, sizeof( eval ) );
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eval._int = size;
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return GetImmediate( &type_argsize, &eval, "" );
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}
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/*
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============
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idCompiler::JumpConstant
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Creates a def for a jump constant
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============
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*/
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ID_INLINE idVarDef *idCompiler::JumpConstant( int value ) {
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eval_t eval;
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memset( &eval, 0, sizeof( eval ) );
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eval._int = value;
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return GetImmediate( &type_jumpoffset, &eval, "" );
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}
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/*
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============
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idCompiler::JumpDef
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Creates a def for a relative jump from one code location to another
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============
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*/
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ID_INLINE idVarDef *idCompiler::JumpDef( int jumpfrom, int jumpto ) {
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return JumpConstant( jumpto - jumpfrom );
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}
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/*
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============
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idCompiler::JumpTo
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Creates a def for a relative jump from current code location
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============
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*/
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ID_INLINE idVarDef *idCompiler::JumpTo( int jumpto ) {
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return JumpDef( gameLocal.program.NumStatements(), jumpto );
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}
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/*
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============
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idCompiler::JumpFrom
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Creates a def for a relative jump from code location to current code location
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============
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*/
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ID_INLINE idVarDef *idCompiler::JumpFrom( int jumpfrom ) {
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return JumpDef( jumpfrom, gameLocal.program.NumStatements() );
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}
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/*
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============
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idCompiler::Divide
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============
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*/
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ID_INLINE float idCompiler::Divide( float numerator, float denominator ) {
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if ( denominator == 0 ) {
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Error( "Divide by zero" );
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return 0;
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}
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return numerator / denominator;
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}
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/*
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============
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idCompiler::FindImmediate
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tries to find an existing immediate with the same value
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============
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*/
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idVarDef *idCompiler::FindImmediate( const idTypeDef *type, const eval_t *eval, const char *string ) const {
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idVarDef *def;
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etype_t etype;
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etype = type->Type();
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// check for a constant with the same value
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for( def = gameLocal.program.GetDefList( "<IMMEDIATE>" ); def != NULL; def = def->Next() ) {
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if ( def->TypeDef() != type ) {
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continue;
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}
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switch( etype ) {
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case ev_field :
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if ( *def->value.intPtr == eval->_int ) {
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|
return def;
|
|
}
|
|
break;
|
|
|
|
case ev_argsize :
|
|
if ( def->value.argSize == eval->_int ) {
|
|
return def;
|
|
}
|
|
break;
|
|
|
|
case ev_jumpoffset :
|
|
if ( def->value.jumpOffset == eval->_int ) {
|
|
return def;
|
|
}
|
|
break;
|
|
|
|
case ev_entity :
|
|
if ( *def->value.intPtr == eval->entity ) {
|
|
return def;
|
|
}
|
|
break;
|
|
|
|
case ev_string :
|
|
if ( idStr::Cmp( def->value.stringPtr, string ) == 0 ) {
|
|
return def;
|
|
}
|
|
break;
|
|
|
|
case ev_float :
|
|
if ( *def->value.floatPtr == eval->_float ) {
|
|
return def;
|
|
}
|
|
break;
|
|
|
|
case ev_virtualfunction :
|
|
if ( def->value.virtualFunction == eval->_int ) {
|
|
return def;
|
|
}
|
|
break;
|
|
|
|
|
|
case ev_vector :
|
|
if ( ( def->value.vectorPtr->x == eval->vector[ 0 ] ) &&
|
|
( def->value.vectorPtr->y == eval->vector[ 1 ] ) &&
|
|
( def->value.vectorPtr->z == eval->vector[ 2 ] ) ) {
|
|
return def;
|
|
}
|
|
break;
|
|
|
|
default :
|
|
Error( "weird immediate type" );
|
|
break;
|
|
}
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/*
|
|
============
|
|
idCompiler::GetImmediate
|
|
|
|
returns an existing immediate with the same value, or allocates a new one
|
|
============
|
|
*/
|
|
idVarDef *idCompiler::GetImmediate( idTypeDef *type, const eval_t *eval, const char *string ) {
|
|
idVarDef *def;
|
|
|
|
def = FindImmediate( type, eval, string );
|
|
if ( def ) {
|
|
def->numUsers++;
|
|
} else {
|
|
// allocate a new def
|
|
def = gameLocal.program.AllocDef( type, "<IMMEDIATE>", &def_namespace, true );
|
|
if ( type->Type() == ev_string ) {
|
|
def->SetString( string, true );
|
|
} else {
|
|
def->SetValue( *eval, true );
|
|
}
|
|
}
|
|
|
|
return def;
|
|
}
|
|
|
|
/*
|
|
============
|
|
idCompiler::OptimizeOpcode
|
|
|
|
try to optimize when the operator works on constants only
|
|
============
|
|
*/
|
|
idVarDef *idCompiler::OptimizeOpcode( const opcode_t *op, idVarDef *var_a, idVarDef *var_b ) {
|
|
eval_t c;
|
|
idTypeDef *type;
|
|
|
|
if ( var_a && var_a->initialized != idVarDef::initializedConstant ) {
|
|
return NULL;
|
|
}
|
|
if ( var_b && var_b->initialized != idVarDef::initializedConstant ) {
|
|
return NULL;
|
|
}
|
|
|
|
idVec3 &vec_c = *reinterpret_cast<idVec3 *>( &c.vector[ 0 ] );
|
|
|
|
memset( &c, 0, sizeof( c ) );
|
|
switch( op - opcodes ) {
|
|
case OP_ADD_F: c._float = *var_a->value.floatPtr + *var_b->value.floatPtr; type = &type_float; break;
|
|
case OP_ADD_V: vec_c = *var_a->value.vectorPtr + *var_b->value.vectorPtr; type = &type_vector; break;
|
|
case OP_SUB_F: c._float = *var_a->value.floatPtr - *var_b->value.floatPtr; type = &type_float; break;
|
|
case OP_SUB_V: vec_c = *var_a->value.vectorPtr - *var_b->value.vectorPtr; type = &type_vector; break;
|
|
case OP_MUL_F: c._float = *var_a->value.floatPtr * *var_b->value.floatPtr; type = &type_float; break;
|
|
case OP_MUL_V: c._float = *var_a->value.vectorPtr * *var_b->value.vectorPtr; type = &type_float; break;
|
|
case OP_MUL_FV: vec_c = *var_b->value.vectorPtr * *var_a->value.floatPtr; type = &type_vector; break;
|
|
case OP_MUL_VF: vec_c = *var_a->value.vectorPtr * *var_b->value.floatPtr; type = &type_vector; break;
|
|
case OP_DIV_F: c._float = Divide( *var_a->value.floatPtr, *var_b->value.floatPtr ); type = &type_float; break;
|
|
case OP_MOD_F: c._float = (int)*var_a->value.floatPtr % (int)*var_b->value.floatPtr; type = &type_float; break;
|
|
case OP_BITAND: c._float = ( int )*var_a->value.floatPtr & ( int )*var_b->value.floatPtr; type = &type_float; break;
|
|
case OP_BITOR: c._float = ( int )*var_a->value.floatPtr | ( int )*var_b->value.floatPtr; type = &type_float; break;
|
|
case OP_GE: c._float = *var_a->value.floatPtr >= *var_b->value.floatPtr; type = &type_float; break;
|
|
case OP_LE: c._float = *var_a->value.floatPtr <= *var_b->value.floatPtr; type = &type_float; break;
|
|
case OP_GT: c._float = *var_a->value.floatPtr > *var_b->value.floatPtr; type = &type_float; break;
|
|
case OP_LT: c._float = *var_a->value.floatPtr < *var_b->value.floatPtr; type = &type_float; break;
|
|
case OP_AND: c._float = *var_a->value.floatPtr && *var_b->value.floatPtr; type = &type_float; break;
|
|
case OP_OR: c._float = *var_a->value.floatPtr || *var_b->value.floatPtr; type = &type_float; break;
|
|
case OP_NOT_BOOL: c._int = !*var_a->value.intPtr; type = &type_boolean; break;
|
|
case OP_NOT_F: c._float = !*var_a->value.floatPtr; type = &type_float; break;
|
|
case OP_NOT_V: c._float = !var_a->value.vectorPtr->x && !var_a->value.vectorPtr->y && !var_a->value.vectorPtr->z; type = &type_float; break;
|
|
case OP_NEG_F: c._float = -*var_a->value.floatPtr; type = &type_float; break;
|
|
case OP_NEG_V: vec_c = -*var_a->value.vectorPtr; type = &type_vector; break;
|
|
case OP_INT_F: c._float = ( int )*var_a->value.floatPtr; type = &type_float; break;
|
|
case OP_EQ_F: c._float = ( *var_a->value.floatPtr == *var_b->value.floatPtr ); type = &type_float; break;
|
|
case OP_EQ_V: c._float = var_a->value.vectorPtr->Compare( *var_b->value.vectorPtr ); type = &type_float; break;
|
|
case OP_EQ_E: c._float = ( *var_a->value.intPtr == *var_b->value.intPtr ); type = &type_float; break;
|
|
case OP_NE_F: c._float = ( *var_a->value.floatPtr != *var_b->value.floatPtr ); type = &type_float; break;
|
|
case OP_NE_V: c._float = !var_a->value.vectorPtr->Compare( *var_b->value.vectorPtr ); type = &type_float; break;
|
|
case OP_NE_E: c._float = ( *var_a->value.intPtr != *var_b->value.intPtr ); type = &type_float; break;
|
|
case OP_UADD_F: c._float = *var_b->value.floatPtr + *var_a->value.floatPtr; type = &type_float; break;
|
|
case OP_USUB_F: c._float = *var_b->value.floatPtr - *var_a->value.floatPtr; type = &type_float; break;
|
|
case OP_UMUL_F: c._float = *var_b->value.floatPtr * *var_a->value.floatPtr; type = &type_float; break;
|
|
case OP_UDIV_F: c._float = Divide( *var_b->value.floatPtr, *var_a->value.floatPtr ); type = &type_float; break;
|
|
case OP_UMOD_F: c._float = ( int ) *var_b->value.floatPtr % ( int )*var_a->value.floatPtr; type = &type_float; break;
|
|
case OP_UOR_F: c._float = ( int )*var_b->value.floatPtr | ( int )*var_a->value.floatPtr; type = &type_float; break;
|
|
case OP_UAND_F: c._float = ( int )*var_b->value.floatPtr & ( int )*var_a->value.floatPtr; type = &type_float; break;
|
|
case OP_UINC_F: c._float = *var_a->value.floatPtr + 1; type = &type_float; break;
|
|
case OP_UDEC_F: c._float = *var_a->value.floatPtr - 1; type = &type_float; break;
|
|
case OP_COMP_F: c._float = ( float )~( int )*var_a->value.floatPtr; type = &type_float; break;
|
|
default: type = NULL; break;
|
|
}
|
|
|
|
if ( !type ) {
|
|
return NULL;
|
|
}
|
|
|
|
if ( var_a ) {
|
|
var_a->numUsers--;
|
|
if ( var_a->numUsers <= 0 ) {
|
|
gameLocal.program.FreeDef( var_a, NULL );
|
|
}
|
|
}
|
|
if ( var_b ) {
|
|
var_b->numUsers--;
|
|
if ( var_b->numUsers <= 0 ) {
|
|
gameLocal.program.FreeDef( var_b, NULL );
|
|
}
|
|
}
|
|
|
|
return GetImmediate( type, &c, "" );
|
|
}
|
|
|
|
/*
|
|
============
|
|
idCompiler::EmitOpcode
|
|
|
|
Emits a primitive statement, returning the var it places it's value in
|
|
============
|
|
*/
|
|
idVarDef *idCompiler::EmitOpcode( const opcode_t *op, idVarDef *var_a, idVarDef *var_b ) {
|
|
statement_t *statement;
|
|
idVarDef *var_c;
|
|
|
|
var_c = OptimizeOpcode( op, var_a, var_b );
|
|
if ( var_c ) {
|
|
return var_c;
|
|
}
|
|
|
|
if ( var_a && !strcmp( var_a->Name(), RESULT_STRING ) ) {
|
|
var_a->numUsers++;
|
|
}
|
|
if ( var_b && !strcmp( var_b->Name(), RESULT_STRING ) ) {
|
|
var_b->numUsers++;
|
|
}
|
|
|
|
statement = gameLocal.program.AllocStatement();
|
|
statement->linenumber = currentLineNumber;
|
|
statement->file = currentFileNumber;
|
|
|
|
if ( ( op->type_c == &def_void ) || op->rightAssociative ) {
|
|
// ifs, gotos, and assignments don't need vars allocated
|
|
var_c = NULL;
|
|
} else {
|
|
// allocate result space
|
|
// try to reuse result defs as much as possible
|
|
var_c = gameLocal.program.FindFreeResultDef( op->type_c->TypeDef(), RESULT_STRING, scope, var_a, var_b );
|
|
// set user count back to 1, a result def needs to be used twice before it can be reused
|
|
var_c->numUsers = 1;
|
|
}
|
|
|
|
statement->op = op - opcodes;
|
|
statement->a = var_a;
|
|
statement->b = var_b;
|
|
statement->c = var_c;
|
|
|
|
if ( op->rightAssociative ) {
|
|
return var_a;
|
|
}
|
|
|
|
return var_c;
|
|
}
|
|
|
|
/*
|
|
============
|
|
idCompiler::EmitOpcode
|
|
|
|
Emits a primitive statement, returning the var it places it's value in
|
|
============
|
|
*/
|
|
ID_INLINE idVarDef *idCompiler::EmitOpcode( int op, idVarDef *var_a, idVarDef *var_b ) {
|
|
return EmitOpcode( &opcodes[ op ], var_a, var_b );
|
|
}
|
|
|
|
/*
|
|
============
|
|
idCompiler::EmitPush
|
|
|
|
Emits an opcode to push the variable onto the stack.
|
|
============
|
|
*/
|
|
bool idCompiler::EmitPush( idVarDef *expression, const idTypeDef *funcArg ) {
|
|
opcode_t *op;
|
|
opcode_t *out;
|
|
|
|
out = NULL;
|
|
for( op = &opcodes[ OP_PUSH_F ]; op->name && !strcmp( op->name, "<PUSH>" ); op++ ) {
|
|
if ( ( funcArg->Type() == op->type_a->Type() ) && ( expression->Type() == op->type_b->Type() ) ) {
|
|
out = op;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if ( !out ) {
|
|
if ( ( expression->TypeDef() != funcArg ) && !expression->TypeDef()->Inherits( funcArg ) ) {
|
|
return false;
|
|
}
|
|
|
|
out = &opcodes[ OP_PUSH_ENT ];
|
|
}
|
|
|
|
EmitOpcode( out, expression, 0 );
|
|
|
|
return true;
|
|
}
|
|
|
|
/*
|
|
==============
|
|
idCompiler::NextToken
|
|
|
|
Sets token, immediateType, and possibly immediate
|
|
==============
|
|
*/
|
|
void idCompiler::NextToken( void ) {
|
|
int i;
|
|
|
|
// reset our type
|
|
immediateType = NULL;
|
|
memset( &immediate, 0, sizeof( immediate ) );
|
|
|
|
// Save the token's line number and filename since when we emit opcodes the current
|
|
// token is always the next one to be read
|
|
currentLineNumber = token.line;
|
|
currentFileNumber = gameLocal.program.GetFilenum( parserPtr->GetFileName() );
|
|
|
|
if ( !parserPtr->ReadToken( &token ) ) {
|
|
eof = true;
|
|
return;
|
|
}
|
|
|
|
if ( currentFileNumber != gameLocal.program.GetFilenum( parserPtr->GetFileName() ) ) {
|
|
if ( ( braceDepth > 0 ) && ( token != "}" ) ) {
|
|
// missing a closing brace. try to give as much info as possible.
|
|
if ( scope->Type() == ev_function ) {
|
|
Error( "Unexpected end of file inside function '%s'. Missing closing braces.", scope->Name() );
|
|
} else if ( scope->Type() == ev_object ) {
|
|
Error( "Unexpected end of file inside object '%s'. Missing closing braces.", scope->Name() );
|
|
} else if ( scope->Type() == ev_namespace ) {
|
|
Error( "Unexpected end of file inside namespace '%s'. Missing closing braces.", scope->Name() );
|
|
} else {
|
|
Error( "Unexpected end of file inside braced section" );
|
|
}
|
|
}
|
|
}
|
|
|
|
switch( token.type ) {
|
|
case TT_STRING:
|
|
// handle quoted strings as a unit
|
|
immediateType = &type_string;
|
|
return;
|
|
|
|
case TT_LITERAL: {
|
|
// handle quoted vectors as a unit
|
|
immediateType = &type_vector;
|
|
idLexer lex( token, token.Length(), parserPtr->GetFileName(), LEXFL_NOERRORS );
|
|
idToken token2;
|
|
for( i = 0; i < 3; i++ ) {
|
|
if ( !lex.ReadToken( &token2 ) ) {
|
|
Error( "Couldn't read vector. '%s' is not in the form of 'x y z'", token.c_str() );
|
|
}
|
|
if ( token2.type == TT_PUNCTUATION && token2 == "-" ) {
|
|
if ( !lex.CheckTokenType( TT_NUMBER, 0, &token2 ) ) {
|
|
Error( "expected a number following '-' but found '%s' in vector '%s'", token2.c_str(), token.c_str() );
|
|
}
|
|
immediate.vector[ i ] = -token2.GetFloatValue();
|
|
} else if ( token2.type == TT_NUMBER ) {
|
|
immediate.vector[ i ] = token2.GetFloatValue();
|
|
} else {
|
|
Error( "vector '%s' is not in the form of 'x y z'. expected float value, found '%s'", token.c_str(), token2.c_str() );
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
|
|
case TT_NUMBER:
|
|
immediateType = &type_float;
|
|
immediate._float = token.GetFloatValue();
|
|
return;
|
|
|
|
case TT_PUNCTUATION:
|
|
// entity names
|
|
if ( token == "$" ) {
|
|
immediateType = &type_entity;
|
|
parserPtr->ReadToken( &token );
|
|
return;
|
|
}
|
|
|
|
if ( token == "{" ) {
|
|
braceDepth++;
|
|
return;
|
|
}
|
|
|
|
if ( token == "}" ) {
|
|
braceDepth--;
|
|
return;
|
|
}
|
|
|
|
if ( punctuationValid[ token.subtype ] ) {
|
|
return;
|
|
}
|
|
|
|
Error( "Unknown punctuation '%s'", token.c_str() );
|
|
break;
|
|
|
|
case TT_NAME:
|
|
return;
|
|
|
|
default:
|
|
Error( "Unknown token '%s'", token.c_str() );
|
|
}
|
|
}
|
|
|
|
/*
|
|
=============
|
|
idCompiler::ExpectToken
|
|
|
|
Issues an Error if the current token isn't equal to string
|
|
Gets the next token
|
|
=============
|
|
*/
|
|
void idCompiler::ExpectToken( const char *string ) {
|
|
if ( token != string ) {
|
|
Error( "expected '%s', found '%s'", string, token.c_str() );
|
|
}
|
|
|
|
NextToken();
|
|
}
|
|
|
|
/*
|
|
=============
|
|
idCompiler::CheckToken
|
|
|
|
Returns true and gets the next token if the current token equals string
|
|
Returns false and does nothing otherwise
|
|
=============
|
|
*/
|
|
bool idCompiler::CheckToken( const char *string ) {
|
|
if ( token != string ) {
|
|
return false;
|
|
}
|
|
|
|
NextToken();
|
|
|
|
return true;
|
|
}
|
|
|
|
/*
|
|
============
|
|
idCompiler::ParseName
|
|
|
|
Checks to see if the current token is a valid name
|
|
============
|
|
*/
|
|
void idCompiler::ParseName( idStr &name ) {
|
|
if ( token.type != TT_NAME ) {
|
|
Error( "'%s' is not a name", token.c_str() );
|
|
}
|
|
|
|
name = token;
|
|
NextToken();
|
|
}
|
|
|
|
/*
|
|
============
|
|
idCompiler::SkipOutOfFunction
|
|
|
|
For error recovery, pops out of nested braces
|
|
============
|
|
*/
|
|
void idCompiler::SkipOutOfFunction( void ) {
|
|
while( braceDepth ) {
|
|
parserPtr->SkipBracedSection( false );
|
|
braceDepth--;
|
|
}
|
|
NextToken();
|
|
}
|
|
|
|
/*
|
|
============
|
|
idCompiler::SkipToSemicolon
|
|
|
|
For error recovery
|
|
============
|
|
*/
|
|
void idCompiler::SkipToSemicolon( void ) {
|
|
do {
|
|
if ( CheckToken( ";" ) ) {
|
|
return;
|
|
}
|
|
|
|
NextToken();
|
|
} while( !eof );
|
|
}
|
|
|
|
/*
|
|
============
|
|
idCompiler::CheckType
|
|
|
|
Parses a variable type, including functions types
|
|
============
|
|
*/
|
|
idTypeDef *idCompiler::CheckType( void ) {
|
|
idTypeDef *type;
|
|
|
|
if ( token == "float" ) {
|
|
type = &type_float;
|
|
} else if ( token == "vector" ) {
|
|
type = &type_vector;
|
|
} else if ( token == "entity" ) {
|
|
type = &type_entity;
|
|
} else if ( token == "string" ) {
|
|
type = &type_string;
|
|
} else if ( token == "void" ) {
|
|
type = &type_void;
|
|
} else if ( token == "object" ) {
|
|
type = &type_object;
|
|
} else if ( token == "boolean" ) {
|
|
type = &type_boolean;
|
|
} else if ( token == "namespace" ) {
|
|
type = &type_namespace;
|
|
} else if ( token == "scriptEvent" ) {
|
|
type = &type_scriptevent;
|
|
} else {
|
|
type = gameLocal.program.FindType( token.c_str() );
|
|
if ( type && !type->Inherits( &type_object ) ) {
|
|
type = NULL;
|
|
}
|
|
}
|
|
|
|
return type;
|
|
}
|
|
|
|
/*
|
|
============
|
|
idCompiler::ParseType
|
|
|
|
Parses a variable type, including functions types
|
|
============
|
|
*/
|
|
idTypeDef *idCompiler::ParseType( void ) {
|
|
idTypeDef *type;
|
|
|
|
type = CheckType();
|
|
if ( !type ) {
|
|
Error( "\"%s\" is not a type", token.c_str() );
|
|
}
|
|
|
|
if ( ( type == &type_scriptevent ) && ( scope != &def_namespace ) ) {
|
|
Error( "scriptEvents can only defined in the global namespace" );
|
|
}
|
|
|
|
if ( ( type == &type_namespace ) && ( scope->Type() != ev_namespace ) ) {
|
|
Error( "A namespace may only be defined globally, or within another namespace" );
|
|
}
|
|
|
|
NextToken();
|
|
|
|
return type;
|
|
}
|
|
|
|
/*
|
|
============
|
|
idCompiler::ParseImmediate
|
|
|
|
Looks for a preexisting constant
|
|
============
|
|
*/
|
|
idVarDef *idCompiler::ParseImmediate( void ) {
|
|
idVarDef *def;
|
|
|
|
def = GetImmediate( immediateType, &immediate, token.c_str() );
|
|
NextToken();
|
|
|
|
return def;
|
|
}
|
|
|
|
/*
|
|
============
|
|
idCompiler::EmitFunctionParms
|
|
============
|
|
*/
|
|
idVarDef *idCompiler::EmitFunctionParms( int op, idVarDef *func, int startarg, int startsize, idVarDef *object ) {
|
|
idVarDef *e;
|
|
const idTypeDef *type;
|
|
const idTypeDef *funcArg;
|
|
idVarDef *returnDef;
|
|
idTypeDef *returnType;
|
|
int arg;
|
|
int size;
|
|
int resultOp;
|
|
|
|
type = func->TypeDef();
|
|
if ( func->Type() != ev_function ) {
|
|
Error( "'%s' is not a function", func->Name() );
|
|
}
|
|
|
|
// copy the parameters to the global parameter variables
|
|
arg = startarg;
|
|
size = startsize;
|
|
if ( !CheckToken( ")" ) ) {
|
|
do {
|
|
if ( arg >= type->NumParameters() ) {
|
|
Error( "too many parameters" );
|
|
}
|
|
|
|
e = GetExpression( TOP_PRIORITY );
|
|
|
|
funcArg = type->GetParmType( arg );
|
|
if ( !EmitPush( e, funcArg ) ) {
|
|
Error( "type mismatch on parm %i of call to '%s'", arg + 1, func->Name() );
|
|
}
|
|
|
|
if ( funcArg->Type() == ev_object ) {
|
|
size += type_object.Size();
|
|
} else {
|
|
size += funcArg->Size();
|
|
}
|
|
|
|
arg++;
|
|
} while( CheckToken( "," ) );
|
|
|
|
ExpectToken( ")" );
|
|
}
|
|
|
|
if ( arg < type->NumParameters() ) {
|
|
Error( "too few parameters for function '%s'", func->Name() );
|
|
}
|
|
|
|
if ( op == OP_CALL ) {
|
|
EmitOpcode( op, func, 0 );
|
|
} else if ( ( op == OP_OBJECTCALL ) || ( op == OP_OBJTHREAD ) ) {
|
|
EmitOpcode( op, object, VirtualFunctionConstant( func ) );
|
|
|
|
// need arg size seperate since script object may be NULL
|
|
statement_t &statement = gameLocal.program.GetStatement( gameLocal.program.NumStatements() - 1 );
|
|
statement.c = SizeConstant( func->value.functionPtr->parmTotal );
|
|
} else {
|
|
EmitOpcode( op, func, SizeConstant( size ) );
|
|
}
|
|
|
|
// we need to copy off the result into a temporary result location, so figure out the opcode
|
|
returnType = type->ReturnType();
|
|
if ( returnType->Type() == ev_string ) {
|
|
resultOp = OP_STORE_S;
|
|
returnDef = gameLocal.program.returnStringDef;
|
|
} else {
|
|
gameLocal.program.returnDef->SetTypeDef( returnType );
|
|
returnDef = gameLocal.program.returnDef;
|
|
|
|
switch( returnType->Type() ) {
|
|
case ev_void :
|
|
resultOp = OP_STORE_F;
|
|
break;
|
|
|
|
case ev_boolean :
|
|
resultOp = OP_STORE_BOOL;
|
|
break;
|
|
|
|
case ev_float :
|
|
resultOp = OP_STORE_F;
|
|
break;
|
|
|
|
case ev_vector :
|
|
resultOp = OP_STORE_V;
|
|
break;
|
|
|
|
case ev_entity :
|
|
resultOp = OP_STORE_ENT;
|
|
break;
|
|
|
|
case ev_object :
|
|
resultOp = OP_STORE_OBJ;
|
|
break;
|
|
|
|
default :
|
|
Error( "Invalid return type for function '%s'", func->Name() );
|
|
// shut up compiler
|
|
resultOp = OP_STORE_OBJ;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if ( returnType->Type() == ev_void ) {
|
|
// don't need result space since there's no result, so just return the normal result def.
|
|
return returnDef;
|
|
}
|
|
|
|
// allocate result space
|
|
// try to reuse result defs as much as possible
|
|
statement_t &statement = gameLocal.program.GetStatement( gameLocal.program.NumStatements() - 1 );
|
|
idVarDef *resultDef = gameLocal.program.FindFreeResultDef( returnType, RESULT_STRING, scope, statement.a, statement.b );
|
|
// set user count back to 0, a result def needs to be used twice before it can be reused
|
|
resultDef->numUsers = 0;
|
|
|
|
EmitOpcode( resultOp, returnDef, resultDef );
|
|
|
|
return resultDef;
|
|
}
|
|
|
|
/*
|
|
============
|
|
idCompiler::ParseFunctionCall
|
|
============
|
|
*/
|
|
idVarDef *idCompiler::ParseFunctionCall( idVarDef *funcDef ) {
|
|
assert( funcDef );
|
|
|
|
if ( funcDef->Type() != ev_function ) {
|
|
Error( "'%s' is not a function", funcDef->Name() );
|
|
}
|
|
|
|
if ( funcDef->initialized == idVarDef::uninitialized ) {
|
|
Error( "Function '%s' has not been defined yet", funcDef->GlobalName() );
|
|
}
|
|
|
|
assert( funcDef->value.functionPtr );
|
|
if ( callthread ) {
|
|
if ( ( funcDef->initialized != idVarDef::uninitialized ) && funcDef->value.functionPtr->eventdef ) {
|
|
Error( "Built-in functions cannot be called as threads" );
|
|
}
|
|
callthread = false;
|
|
return EmitFunctionParms( OP_THREAD, funcDef, 0, 0, NULL );
|
|
} else {
|
|
if ( ( funcDef->initialized != idVarDef::uninitialized ) && funcDef->value.functionPtr->eventdef ) {
|
|
if ( ( scope->Type() != ev_namespace ) && ( scope->scope->Type() == ev_object ) ) {
|
|
// get the local object pointer
|
|
idVarDef *thisdef = gameLocal.program.GetDef( scope->scope->TypeDef(), "self", scope );
|
|
if ( !thisdef ) {
|
|
Error( "No 'self' within scope" );
|
|
}
|
|
|
|
return ParseEventCall( thisdef, funcDef );
|
|
} else {
|
|
Error( "Built-in functions cannot be called without an object" );
|
|
}
|
|
}
|
|
|
|
return EmitFunctionParms( OP_CALL, funcDef, 0, 0, NULL );
|
|
}
|
|
}
|
|
|
|
/*
|
|
============
|
|
idCompiler::ParseObjectCall
|
|
============
|
|
*/
|
|
idVarDef *idCompiler::ParseObjectCall( idVarDef *object, idVarDef *func ) {
|
|
EmitPush( object, object->TypeDef() );
|
|
if ( callthread ) {
|
|
callthread = false;
|
|
return EmitFunctionParms( OP_OBJTHREAD, func, 1, type_object.Size(), object );
|
|
} else {
|
|
return EmitFunctionParms( OP_OBJECTCALL, func, 1, 0, object );
|
|
}
|
|
}
|
|
|
|
/*
|
|
============
|
|
idCompiler::ParseEventCall
|
|
============
|
|
*/
|
|
idVarDef *idCompiler::ParseEventCall( idVarDef *object, idVarDef *funcDef ) {
|
|
if ( callthread ) {
|
|
Error( "Cannot call built-in functions as a thread" );
|
|
}
|
|
|
|
if ( funcDef->Type() != ev_function ) {
|
|
Error( "'%s' is not a function", funcDef->Name() );
|
|
}
|
|
|
|
if ( !funcDef->value.functionPtr->eventdef ) {
|
|
Error( "\"%s\" cannot be called with object notation", funcDef->Name() );
|
|
}
|
|
|
|
if ( object->Type() == ev_object ) {
|
|
EmitPush( object, &type_entity );
|
|
} else {
|
|
EmitPush( object, object->TypeDef() );
|
|
}
|
|
|
|
return EmitFunctionParms( OP_EVENTCALL, funcDef, 0, type_object.Size(), NULL );
|
|
}
|
|
|
|
/*
|
|
============
|
|
idCompiler::ParseSysObjectCall
|
|
============
|
|
*/
|
|
idVarDef *idCompiler::ParseSysObjectCall( idVarDef *funcDef ) {
|
|
if ( callthread ) {
|
|
Error( "Cannot call built-in functions as a thread" );
|
|
}
|
|
|
|
if ( funcDef->Type() != ev_function ) {
|
|
Error( "'%s' is not a function", funcDef->Name() );
|
|
}
|
|
|
|
if ( !funcDef->value.functionPtr->eventdef ) {
|
|
Error( "\"%s\" cannot be called with object notation", funcDef->Name() );
|
|
}
|
|
|
|
if ( !idThread::Type.RespondsTo( *funcDef->value.functionPtr->eventdef ) ) {
|
|
Error( "\"%s\" is not callable as a 'sys' function", funcDef->Name() );
|
|
}
|
|
|
|
return EmitFunctionParms( OP_SYSCALL, funcDef, 0, 0, NULL );
|
|
}
|
|
|
|
/*
|
|
============
|
|
idCompiler::LookupDef
|
|
============
|
|
*/
|
|
idVarDef *idCompiler::LookupDef( const char *name, const idVarDef *baseobj ) {
|
|
idVarDef *def;
|
|
idVarDef *field;
|
|
etype_t type_b;
|
|
etype_t type_c;
|
|
opcode_t *op;
|
|
|
|
// check if we're accessing a field
|
|
if ( baseobj && ( baseobj->Type() == ev_object ) ) {
|
|
const idVarDef *tdef;
|
|
|
|
def = NULL;
|
|
for( tdef = baseobj; tdef != &def_object; tdef = tdef->TypeDef()->SuperClass()->def ) {
|
|
def = gameLocal.program.GetDef( NULL, name, tdef );
|
|
if ( def ) {
|
|
break;
|
|
}
|
|
}
|
|
} else {
|
|
// first look through the defs in our scope
|
|
def = gameLocal.program.GetDef( NULL, name, scope );
|
|
if ( !def ) {
|
|
// if we're in a member function, check types local to the object
|
|
if ( ( scope->Type() != ev_namespace ) && ( scope->scope->Type() == ev_object ) ) {
|
|
// get the local object pointer
|
|
idVarDef *thisdef = gameLocal.program.GetDef( scope->scope->TypeDef(), "self", scope );
|
|
|
|
field = LookupDef( name, scope->scope->TypeDef()->def );
|
|
if ( !field ) {
|
|
Error( "Unknown value \"%s\"", name );
|
|
}
|
|
|
|
// type check
|
|
type_b = field->Type();
|
|
if ( field->Type() == ev_function ) {
|
|
type_c = field->TypeDef()->ReturnType()->Type();
|
|
} else {
|
|
type_c = field->TypeDef()->FieldType()->Type(); // field access gets type from field
|
|
if ( CheckToken( "++" ) ) {
|
|
if ( type_c != ev_float ) {
|
|
Error( "Invalid type for ++" );
|
|
}
|
|
def = EmitOpcode( OP_UINCP_F, thisdef, field );
|
|
return def;
|
|
} else if ( CheckToken( "--" ) ) {
|
|
if ( type_c != ev_float ) {
|
|
Error( "Invalid type for --" );
|
|
}
|
|
def = EmitOpcode( OP_UDECP_F, thisdef, field );
|
|
return def;
|
|
}
|
|
}
|
|
|
|
op = &opcodes[ OP_INDIRECT_F ];
|
|
while( ( op->type_a->Type() != ev_object )
|
|
|| ( type_b != op->type_b->Type() ) || ( type_c != op->type_c->Type() ) ) {
|
|
if ( ( op->priority == FUNCTION_PRIORITY ) && ( op->type_a->Type() == ev_object ) && ( op->type_c->Type() == ev_void ) &&
|
|
( type_c != op->type_c->Type() ) ) {
|
|
// catches object calls that return a value
|
|
break;
|
|
}
|
|
op++;
|
|
if ( !op->name || strcmp( op->name, "." ) ) {
|
|
Error( "no valid opcode to access type '%s'", field->TypeDef()->SuperClass()->Name() );
|
|
}
|
|
}
|
|
|
|
if ( ( op - opcodes ) == OP_OBJECTCALL ) {
|
|
ExpectToken( "(" );
|
|
def = ParseObjectCall( thisdef, field );
|
|
} else {
|
|
// emit the conversion opcode
|
|
def = EmitOpcode( op, thisdef, field );
|
|
|
|
// field access gets type from field
|
|
def->SetTypeDef( field->TypeDef()->FieldType() );
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return def;
|
|
}
|
|
|
|
/*
|
|
============
|
|
idCompiler::ParseValue
|
|
|
|
Returns the def for the current token
|
|
============
|
|
*/
|
|
idVarDef *idCompiler::ParseValue( void ) {
|
|
idVarDef *def;
|
|
idVarDef *namespaceDef;
|
|
idStr name;
|
|
|
|
if ( immediateType == &type_entity ) {
|
|
// if an immediate entity ($-prefaced name) then create or lookup a def for it.
|
|
// when entities are spawned, they'll lookup the def and point it to them.
|
|
def = gameLocal.program.GetDef( &type_entity, "$" + token, &def_namespace );
|
|
if ( !def ) {
|
|
def = gameLocal.program.AllocDef( &type_entity, "$" + token, &def_namespace, true );
|
|
}
|
|
NextToken();
|
|
return def;
|
|
} else if ( immediateType ) {
|
|
// if the token is an immediate, allocate a constant for it
|
|
return ParseImmediate();
|
|
}
|
|
|
|
ParseName( name );
|
|
def = LookupDef( name, basetype );
|
|
if ( !def ) {
|
|
if ( basetype ) {
|
|
Error( "%s is not a member of %s", name.c_str(), basetype->TypeDef()->Name() );
|
|
} else {
|
|
Error( "Unknown value \"%s\"", name.c_str() );
|
|
}
|
|
// if namespace, then look up the variable in that namespace
|
|
} else if ( def->Type() == ev_namespace ) {
|
|
while( def->Type() == ev_namespace ) {
|
|
ExpectToken( "::" );
|
|
ParseName( name );
|
|
namespaceDef = def;
|
|
def = gameLocal.program.GetDef( NULL, name, namespaceDef );
|
|
if ( !def ) {
|
|
Error( "Unknown value \"%s::%s\"", namespaceDef->GlobalName(), name.c_str() );
|
|
}
|
|
}
|
|
//def = LookupDef( name, basetype );
|
|
}
|
|
|
|
return def;
|
|
}
|
|
|
|
/*
|
|
============
|
|
idCompiler::GetTerm
|
|
============
|
|
*/
|
|
idVarDef *idCompiler::GetTerm( void ) {
|
|
idVarDef *e;
|
|
int op;
|
|
|
|
if ( !immediateType && CheckToken( "~" ) ) {
|
|
e = GetExpression( TILDE_PRIORITY );
|
|
switch( e->Type() ) {
|
|
case ev_float :
|
|
op = OP_COMP_F;
|
|
break;
|
|
|
|
default :
|
|
Error( "type mismatch for ~" );
|
|
|
|
// shut up compiler
|
|
op = OP_COMP_F;
|
|
break;
|
|
}
|
|
|
|
return EmitOpcode( op, e, 0 );
|
|
}
|
|
|
|
if ( !immediateType && CheckToken( "!" ) ) {
|
|
e = GetExpression( NOT_PRIORITY );
|
|
switch( e->Type() ) {
|
|
case ev_boolean :
|
|
op = OP_NOT_BOOL;
|
|
break;
|
|
|
|
case ev_float :
|
|
op = OP_NOT_F;
|
|
break;
|
|
|
|
case ev_string :
|
|
op = OP_NOT_S;
|
|
break;
|
|
|
|
case ev_vector :
|
|
op = OP_NOT_V;
|
|
break;
|
|
|
|
case ev_entity :
|
|
op = OP_NOT_ENT;
|
|
break;
|
|
|
|
case ev_function :
|
|
Error( "Invalid type for !" );
|
|
|
|
// shut up compiler
|
|
op = OP_NOT_F;
|
|
break;
|
|
|
|
case ev_object :
|
|
op = OP_NOT_ENT;
|
|
break;
|
|
|
|
default :
|
|
Error( "type mismatch for !" );
|
|
|
|
// shut up compiler
|
|
op = OP_NOT_F;
|
|
break;
|
|
}
|
|
|
|
return EmitOpcode( op, e, 0 );
|
|
}
|
|
|
|
// check for negation operator
|
|
if ( !immediateType && CheckToken( "-" ) ) {
|
|
// constants are directly negated without an instruction
|
|
if ( immediateType == &type_float ) {
|
|
immediate._float = -immediate._float;
|
|
return ParseImmediate();
|
|
} else if ( immediateType == &type_vector ) {
|
|
immediate.vector[0] = -immediate.vector[0];
|
|
immediate.vector[1] = -immediate.vector[1];
|
|
immediate.vector[2] = -immediate.vector[2];
|
|
return ParseImmediate();
|
|
} else {
|
|
e = GetExpression( NOT_PRIORITY );
|
|
switch( e->Type() ) {
|
|
case ev_float :
|
|
op = OP_NEG_F;
|
|
break;
|
|
|
|
case ev_vector :
|
|
op = OP_NEG_V;
|
|
break;
|
|
default :
|
|
Error( "type mismatch for -" );
|
|
|
|
// shut up compiler
|
|
op = OP_NEG_F;
|
|
break;
|
|
}
|
|
return EmitOpcode( &opcodes[ op ], e, 0 );
|
|
}
|
|
}
|
|
|
|
if ( CheckToken( "int" ) ) {
|
|
ExpectToken( "(" );
|
|
|
|
e = GetExpression( INT_PRIORITY );
|
|
if ( e->Type() != ev_float ) {
|
|
Error( "type mismatch for int()" );
|
|
}
|
|
|
|
ExpectToken( ")" );
|
|
|
|
return EmitOpcode( OP_INT_F, e, 0 );
|
|
}
|
|
|
|
if ( CheckToken( "thread" ) ) {
|
|
callthread = true;
|
|
e = GetExpression( FUNCTION_PRIORITY );
|
|
|
|
if ( callthread ) {
|
|
Error( "Invalid thread call" );
|
|
}
|
|
|
|
// threads return the thread number
|
|
gameLocal.program.returnDef->SetTypeDef( &type_float );
|
|
return gameLocal.program.returnDef;
|
|
}
|
|
|
|
if ( !immediateType && CheckToken( "(" ) ) {
|
|
e = GetExpression( TOP_PRIORITY );
|
|
ExpectToken( ")" );
|
|
|
|
return e;
|
|
}
|
|
|
|
return ParseValue();
|
|
}
|
|
|
|
/*
|
|
==============
|
|
idCompiler::TypeMatches
|
|
==============
|
|
*/
|
|
bool idCompiler::TypeMatches( etype_t type1, etype_t type2 ) const {
|
|
if ( type1 == type2 ) {
|
|
return true;
|
|
}
|
|
|
|
//if ( ( type1 == ev_entity ) && ( type2 == ev_object ) ) {
|
|
// return true;
|
|
//}
|
|
|
|
//if ( ( type2 == ev_entity ) && ( type1 == ev_object ) ) {
|
|
// return true;
|
|
//}
|
|
|
|
return false;
|
|
}
|
|
|
|
/*
|
|
==============
|
|
idCompiler::GetExpression
|
|
==============
|
|
*/
|
|
idVarDef *idCompiler::GetExpression( int priority ) {
|
|
opcode_t *op;
|
|
opcode_t *oldop;
|
|
idVarDef *e;
|
|
idVarDef *e2;
|
|
const idVarDef *oldtype;
|
|
etype_t type_a;
|
|
etype_t type_b;
|
|
etype_t type_c;
|
|
|
|
if ( priority == 0 ) {
|
|
return GetTerm();
|
|
}
|
|
|
|
e = GetExpression( priority - 1 );
|
|
if ( token == ";" ) {
|
|
// save us from searching through the opcodes unneccesarily
|
|
return e;
|
|
}
|
|
|
|
while( 1 ) {
|
|
if ( ( priority == FUNCTION_PRIORITY ) && CheckToken( "(" ) ) {
|
|
return ParseFunctionCall( e );
|
|
}
|
|
|
|
// has to be a punctuation
|
|
if ( immediateType ) {
|
|
break;
|
|
}
|
|
|
|
for( op = opcodes; op->name; op++ ) {
|
|
if ( ( op->priority == priority ) && CheckToken( op->name ) ) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
if ( !op->name ) {
|
|
// next token isn't at this priority level
|
|
break;
|
|
}
|
|
|
|
// unary operators act only on the left operand
|
|
if ( op->type_b == &def_void ) {
|
|
e = EmitOpcode( op, e, 0 );
|
|
return e;
|
|
}
|
|
|
|
// preserve our base type
|
|
oldtype = basetype;
|
|
|
|
// field access needs scope from object
|
|
if ( ( op->name[ 0 ] == '.' ) && e->TypeDef()->Inherits( &type_object ) ) {
|
|
// save off what type this field is part of
|
|
basetype = e->TypeDef()->def;
|
|
}
|
|
|
|
if ( op->rightAssociative ) {
|
|
// if last statement is an indirect, change it to an address of
|
|
if ( gameLocal.program.NumStatements() > 0 ) {
|
|
statement_t &statement = gameLocal.program.GetStatement( gameLocal.program.NumStatements() - 1 );
|
|
if ( ( statement.op >= OP_INDIRECT_F ) && ( statement.op < OP_ADDRESS ) ) {
|
|
statement.op = OP_ADDRESS;
|
|
type_pointer.SetPointerType( e->TypeDef() );
|
|
e->SetTypeDef( &type_pointer );
|
|
}
|
|
}
|
|
|
|
e2 = GetExpression( priority );
|
|
} else {
|
|
e2 = GetExpression( priority - 1 );
|
|
}
|
|
|
|
// restore type
|
|
basetype = oldtype;
|
|
|
|
// type check
|
|
type_a = e->Type();
|
|
type_b = e2->Type();
|
|
|
|
// field access gets type from field
|
|
if ( op->name[ 0 ] == '.' ) {
|
|
if ( ( e2->Type() == ev_function ) && e2->TypeDef()->ReturnType() ) {
|
|
type_c = e2->TypeDef()->ReturnType()->Type();
|
|
} else if ( e2->TypeDef()->FieldType() ) {
|
|
type_c = e2->TypeDef()->FieldType()->Type();
|
|
} else {
|
|
// not a field
|
|
type_c = ev_error;
|
|
}
|
|
} else {
|
|
type_c = ev_void;
|
|
}
|
|
|
|
oldop = op;
|
|
while( !TypeMatches( type_a, op->type_a->Type() ) || !TypeMatches( type_b, op->type_b->Type() ) ||
|
|
( ( type_c != ev_void ) && !TypeMatches( type_c, op->type_c->Type() ) ) ) {
|
|
if ( ( op->priority == FUNCTION_PRIORITY ) && TypeMatches( type_a, op->type_a->Type() ) && TypeMatches( type_b, op->type_b->Type() ) ) {
|
|
break;
|
|
}
|
|
|
|
op++;
|
|
if ( !op->name || strcmp( op->name, oldop->name ) ) {
|
|
Error( "type mismatch for '%s'", oldop->name );
|
|
}
|
|
}
|
|
|
|
switch( op - opcodes ) {
|
|
case OP_SYSCALL :
|
|
ExpectToken( "(" );
|
|
e = ParseSysObjectCall( e2 );
|
|
break;
|
|
|
|
case OP_OBJECTCALL :
|
|
ExpectToken( "(" );
|
|
if ( ( e2->initialized != idVarDef::uninitialized ) && e2->value.functionPtr->eventdef ) {
|
|
e = ParseEventCall( e, e2 );
|
|
} else {
|
|
e = ParseObjectCall( e, e2 );
|
|
}
|
|
break;
|
|
|
|
case OP_EVENTCALL :
|
|
ExpectToken( "(" );
|
|
if ( ( e2->initialized != idVarDef::uninitialized ) && e2->value.functionPtr->eventdef ) {
|
|
e = ParseEventCall( e, e2 );
|
|
} else {
|
|
e = ParseObjectCall( e, e2 );
|
|
}
|
|
break;
|
|
|
|
default:
|
|
if ( callthread ) {
|
|
Error( "Expecting function call after 'thread'" );
|
|
}
|
|
|
|
if ( ( type_a == ev_pointer ) && ( type_b != e->TypeDef()->PointerType()->Type() ) ) {
|
|
// FIXME: need to make a general case for this
|
|
if ( ( op - opcodes == OP_STOREP_F ) && ( e->TypeDef()->PointerType()->Type() == ev_boolean ) ) {
|
|
// copy from float to boolean pointer
|
|
op = &opcodes[ OP_STOREP_FTOBOOL ];
|
|
} else if ( ( op - opcodes == OP_STOREP_BOOL ) && ( e->TypeDef()->PointerType()->Type() == ev_float ) ) {
|
|
// copy from boolean to float pointer
|
|
op = &opcodes[ OP_STOREP_BOOLTOF ];
|
|
} else if ( ( op - opcodes == OP_STOREP_F ) && ( e->TypeDef()->PointerType()->Type() == ev_string ) ) {
|
|
// copy from float to string pointer
|
|
op = &opcodes[ OP_STOREP_FTOS ];
|
|
} else if ( ( op - opcodes == OP_STOREP_BOOL ) && ( e->TypeDef()->PointerType()->Type() == ev_string ) ) {
|
|
// copy from boolean to string pointer
|
|
op = &opcodes[ OP_STOREP_BTOS ];
|
|
} else if ( ( op - opcodes == OP_STOREP_V ) && ( e->TypeDef()->PointerType()->Type() == ev_string ) ) {
|
|
// copy from vector to string pointer
|
|
op = &opcodes[ OP_STOREP_VTOS ];
|
|
} else if ( ( op - opcodes == OP_STOREP_ENT ) && ( e->TypeDef()->PointerType()->Type() == ev_object ) ) {
|
|
// store an entity into an object pointer
|
|
op = &opcodes[ OP_STOREP_OBJENT ];
|
|
} else {
|
|
Error( "type mismatch for '%s'", op->name );
|
|
}
|
|
}
|
|
|
|
if ( op->rightAssociative ) {
|
|
e = EmitOpcode( op, e2, e );
|
|
} else {
|
|
e = EmitOpcode( op, e, e2 );
|
|
}
|
|
|
|
if ( op - opcodes == OP_STOREP_OBJENT ) {
|
|
// statement.b points to type_pointer, which is just a temporary that gets its type reassigned, so we store the real type in statement.c
|
|
// so that we can do a type check during run time since we don't know what type the script object is at compile time because it
|
|
// comes from an entity
|
|
statement_t &statement = gameLocal.program.GetStatement( gameLocal.program.NumStatements() - 1 );
|
|
statement.c = type_pointer.PointerType()->def;
|
|
}
|
|
|
|
// field access gets type from field
|
|
if ( type_c != ev_void ) {
|
|
e->SetTypeDef( e2->TypeDef()->FieldType() );
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
return e;
|
|
}
|
|
|
|
/*
|
|
================
|
|
idCompiler::PatchLoop
|
|
================
|
|
*/
|
|
void idCompiler::PatchLoop( int start, int continuePos ) {
|
|
int i;
|
|
statement_t *pos;
|
|
|
|
pos = &gameLocal.program.GetStatement( start );
|
|
for( i = start; i < gameLocal.program.NumStatements(); i++, pos++ ) {
|
|
if ( pos->op == OP_BREAK ) {
|
|
pos->op = OP_GOTO;
|
|
pos->a = JumpFrom( i );
|
|
} else if ( pos->op == OP_CONTINUE ) {
|
|
pos->op = OP_GOTO;
|
|
pos->a = JumpDef( i, continuePos );
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
================
|
|
idCompiler::ParseReturnStatement
|
|
================
|
|
*/
|
|
void idCompiler::ParseReturnStatement( void ) {
|
|
idVarDef *e;
|
|
etype_t type_a;
|
|
etype_t type_b;
|
|
opcode_t *op;
|
|
|
|
if ( CheckToken( ";" ) ) {
|
|
if ( scope->TypeDef()->ReturnType()->Type() != ev_void ) {
|
|
Error( "expecting return value" );
|
|
}
|
|
|
|
EmitOpcode( OP_RETURN, 0, 0 );
|
|
return;
|
|
}
|
|
|
|
e = GetExpression( TOP_PRIORITY );
|
|
ExpectToken( ";" );
|
|
|
|
type_a = e->Type();
|
|
type_b = scope->TypeDef()->ReturnType()->Type();
|
|
|
|
if ( TypeMatches( type_a, type_b ) ) {
|
|
EmitOpcode( OP_RETURN, e, 0 );
|
|
return;
|
|
}
|
|
|
|
for( op = opcodes; op->name; op++ ) {
|
|
if ( !strcmp( op->name, "=" ) ) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
assert( op->name );
|
|
|
|
while( !TypeMatches( type_a, op->type_a->Type() ) || !TypeMatches( type_b, op->type_b->Type() ) ) {
|
|
op++;
|
|
if ( !op->name || strcmp( op->name, "=" ) ) {
|
|
Error( "type mismatch for return value" );
|
|
}
|
|
}
|
|
|
|
idTypeDef *returnType = scope->TypeDef()->ReturnType();
|
|
if ( returnType->Type() == ev_string ) {
|
|
EmitOpcode( op, e, gameLocal.program.returnStringDef );
|
|
} else {
|
|
gameLocal.program.returnDef->SetTypeDef( returnType );
|
|
EmitOpcode( op, e, gameLocal.program.returnDef );
|
|
}
|
|
EmitOpcode( OP_RETURN, 0, 0 );
|
|
}
|
|
|
|
/*
|
|
================
|
|
idCompiler::ParseWhileStatement
|
|
================
|
|
*/
|
|
void idCompiler::ParseWhileStatement( void ) {
|
|
idVarDef *e;
|
|
int patch1;
|
|
int patch2;
|
|
|
|
loopDepth++;
|
|
|
|
ExpectToken( "(" );
|
|
|
|
patch2 = gameLocal.program.NumStatements();
|
|
e = GetExpression( TOP_PRIORITY );
|
|
ExpectToken( ")" );
|
|
|
|
if ( ( e->initialized == idVarDef::initializedConstant ) && ( *e->value.intPtr != 0 ) ) {
|
|
//FIXME: we can completely skip generation of this code in the opposite case
|
|
ParseStatement();
|
|
EmitOpcode( OP_GOTO, JumpTo( patch2 ), 0 );
|
|
} else {
|
|
patch1 = gameLocal.program.NumStatements();
|
|
EmitOpcode( OP_IFNOT, e, 0 );
|
|
ParseStatement();
|
|
EmitOpcode( OP_GOTO, JumpTo( patch2 ), 0 );
|
|
gameLocal.program.GetStatement( patch1 ).b = JumpFrom( patch1 );
|
|
}
|
|
|
|
// fixup breaks and continues
|
|
PatchLoop( patch2, patch2 );
|
|
|
|
loopDepth--;
|
|
}
|
|
|
|
/*
|
|
================
|
|
idCompiler::ParseForStatement
|
|
|
|
Form of for statement with a counter:
|
|
|
|
a = 0;
|
|
start: << patch4
|
|
if ( !( a < 10 ) ) {
|
|
goto end; << patch1
|
|
} else {
|
|
goto process; << patch3
|
|
}
|
|
|
|
increment: << patch2
|
|
a = a + 1;
|
|
goto start; << goto patch4
|
|
|
|
process:
|
|
statements;
|
|
goto increment; << goto patch2
|
|
|
|
end:
|
|
|
|
Form of for statement without a counter:
|
|
|
|
a = 0;
|
|
start: << patch2
|
|
if ( !( a < 10 ) ) {
|
|
goto end; << patch1
|
|
}
|
|
|
|
process:
|
|
statements;
|
|
goto start; << goto patch2
|
|
|
|
end:
|
|
================
|
|
*/
|
|
void idCompiler::ParseForStatement( void ) {
|
|
idVarDef *e;
|
|
int start;
|
|
int patch1;
|
|
int patch2;
|
|
int patch3;
|
|
int patch4;
|
|
|
|
loopDepth++;
|
|
|
|
start = gameLocal.program.NumStatements();
|
|
|
|
ExpectToken( "(" );
|
|
|
|
// init
|
|
if ( !CheckToken( ";" ) ) {
|
|
do {
|
|
GetExpression( TOP_PRIORITY );
|
|
} while( CheckToken( "," ) );
|
|
|
|
ExpectToken( ";" );
|
|
}
|
|
|
|
// condition
|
|
patch2 = gameLocal.program.NumStatements();
|
|
|
|
e = GetExpression( TOP_PRIORITY );
|
|
ExpectToken( ";" );
|
|
|
|
//FIXME: add check for constant expression
|
|
patch1 = gameLocal.program.NumStatements();
|
|
EmitOpcode( OP_IFNOT, e, 0 );
|
|
|
|
// counter
|
|
if ( !CheckToken( ")" ) ) {
|
|
patch3 = gameLocal.program.NumStatements();
|
|
EmitOpcode( OP_IF, e, 0 );
|
|
|
|
patch4 = patch2;
|
|
patch2 = gameLocal.program.NumStatements();
|
|
do {
|
|
GetExpression( TOP_PRIORITY );
|
|
} while( CheckToken( "," ) );
|
|
|
|
ExpectToken( ")" );
|
|
|
|
// goto patch4
|
|
EmitOpcode( OP_GOTO, JumpTo( patch4 ), 0 );
|
|
|
|
// fixup patch3
|
|
gameLocal.program.GetStatement( patch3 ).b = JumpFrom( patch3 );
|
|
}
|
|
|
|
ParseStatement();
|
|
|
|
// goto patch2
|
|
EmitOpcode( OP_GOTO, JumpTo( patch2 ), 0 );
|
|
|
|
// fixup patch1
|
|
gameLocal.program.GetStatement( patch1 ).b = JumpFrom( patch1 );
|
|
|
|
// fixup breaks and continues
|
|
PatchLoop( start, patch2 );
|
|
|
|
loopDepth--;
|
|
}
|
|
|
|
/*
|
|
================
|
|
idCompiler::ParseDoWhileStatement
|
|
================
|
|
*/
|
|
void idCompiler::ParseDoWhileStatement( void ) {
|
|
idVarDef *e;
|
|
int patch1;
|
|
|
|
loopDepth++;
|
|
|
|
patch1 = gameLocal.program.NumStatements();
|
|
ParseStatement();
|
|
ExpectToken( "while" );
|
|
ExpectToken( "(" );
|
|
e = GetExpression( TOP_PRIORITY );
|
|
ExpectToken( ")" );
|
|
ExpectToken( ";" );
|
|
|
|
EmitOpcode( OP_IF, e, JumpTo( patch1 ) );
|
|
|
|
// fixup breaks and continues
|
|
PatchLoop( patch1, patch1 );
|
|
|
|
loopDepth--;
|
|
}
|
|
|
|
/*
|
|
================
|
|
idCompiler::ParseIfStatement
|
|
================
|
|
*/
|
|
void idCompiler::ParseIfStatement( void ) {
|
|
idVarDef *e;
|
|
int patch1;
|
|
int patch2;
|
|
|
|
ExpectToken( "(" );
|
|
e = GetExpression( TOP_PRIORITY );
|
|
ExpectToken( ")" );
|
|
|
|
//FIXME: add check for constant expression
|
|
patch1 = gameLocal.program.NumStatements();
|
|
EmitOpcode( OP_IFNOT, e, 0 );
|
|
|
|
ParseStatement();
|
|
|
|
if ( CheckToken( "else" ) ) {
|
|
patch2 = gameLocal.program.NumStatements();
|
|
EmitOpcode( OP_GOTO, 0, 0 );
|
|
gameLocal.program.GetStatement( patch1 ).b = JumpFrom( patch1 );
|
|
ParseStatement();
|
|
gameLocal.program.GetStatement( patch2 ).a = JumpFrom( patch2 );
|
|
} else {
|
|
gameLocal.program.GetStatement( patch1 ).b = JumpFrom( patch1 );
|
|
}
|
|
}
|
|
|
|
/*
|
|
============
|
|
idCompiler::ParseStatement
|
|
============
|
|
*/
|
|
void idCompiler::ParseStatement( void ) {
|
|
if ( CheckToken( ";" ) ) {
|
|
// skip semicolons, which are harmless and ok syntax
|
|
return;
|
|
}
|
|
|
|
if ( CheckToken( "{" ) ) {
|
|
do {
|
|
ParseStatement();
|
|
} while( !CheckToken( "}" ) );
|
|
|
|
return;
|
|
}
|
|
|
|
if ( CheckToken( "return" ) ) {
|
|
ParseReturnStatement();
|
|
return;
|
|
}
|
|
|
|
if ( CheckToken( "while" ) ) {
|
|
ParseWhileStatement();
|
|
return;
|
|
}
|
|
|
|
if ( CheckToken( "for" ) ) {
|
|
ParseForStatement();
|
|
return;
|
|
}
|
|
|
|
if ( CheckToken( "do" ) ) {
|
|
ParseDoWhileStatement();
|
|
return;
|
|
}
|
|
|
|
if ( CheckToken( "break" ) ) {
|
|
ExpectToken( ";" );
|
|
if ( !loopDepth ) {
|
|
Error( "cannot break outside of a loop" );
|
|
}
|
|
EmitOpcode( OP_BREAK, 0, 0 );
|
|
return;
|
|
}
|
|
|
|
if ( CheckToken( "continue" ) ) {
|
|
ExpectToken( ";" );
|
|
if ( !loopDepth ) {
|
|
Error( "cannot contine outside of a loop" );
|
|
}
|
|
EmitOpcode( OP_CONTINUE, 0, 0 );
|
|
return;
|
|
}
|
|
|
|
if ( CheckType() != NULL ) {
|
|
ParseDefs();
|
|
return;
|
|
}
|
|
|
|
if ( CheckToken( "if" ) ) {
|
|
ParseIfStatement();
|
|
return;
|
|
}
|
|
|
|
GetExpression( TOP_PRIORITY );
|
|
ExpectToken(";");
|
|
}
|
|
|
|
/*
|
|
================
|
|
idCompiler::ParseObjectDef
|
|
================
|
|
*/
|
|
void idCompiler::ParseObjectDef( const char *objname ) {
|
|
idTypeDef *objtype;
|
|
idTypeDef *type;
|
|
idTypeDef *parentType;
|
|
idTypeDef *fieldtype;
|
|
idStr name;
|
|
const char *fieldname;
|
|
idTypeDef newtype( ev_field, NULL, "", 0, NULL );
|
|
idVarDef *oldscope;
|
|
int num;
|
|
int i;
|
|
|
|
oldscope = scope;
|
|
if ( scope->Type() != ev_namespace ) {
|
|
Error( "Objects cannot be defined within functions or other objects" );
|
|
}
|
|
|
|
// make sure it doesn't exist before we create it
|
|
if ( gameLocal.program.FindType( objname ) != NULL ) {
|
|
Error( "'%s' : redefinition; different basic types", objname );
|
|
}
|
|
|
|
// base type
|
|
if ( !CheckToken( ":" ) ) {
|
|
parentType = &type_object;
|
|
} else {
|
|
parentType = ParseType();
|
|
if ( !parentType->Inherits( &type_object ) ) {
|
|
Error( "Objects may only inherit from objects." );
|
|
}
|
|
}
|
|
|
|
objtype = gameLocal.program.AllocType( ev_object, NULL, objname, parentType == &type_object ? 0 : parentType->Size(), parentType );
|
|
objtype->def = gameLocal.program.AllocDef( objtype, objname, scope, true );
|
|
scope = objtype->def;
|
|
|
|
// inherit all the functions
|
|
num = parentType->NumFunctions();
|
|
for( i = 0; i < parentType->NumFunctions(); i++ ) {
|
|
const function_t *func = parentType->GetFunction( i );
|
|
objtype->AddFunction( func );
|
|
}
|
|
|
|
ExpectToken( "{" );
|
|
|
|
do {
|
|
if ( CheckToken( ";" ) ) {
|
|
// skip semicolons, which are harmless and ok syntax
|
|
continue;
|
|
}
|
|
|
|
fieldtype = ParseType();
|
|
newtype.SetFieldType( fieldtype );
|
|
|
|
fieldname = va( "%s field", fieldtype->Name() );
|
|
newtype.SetName( fieldname );
|
|
|
|
ParseName( name );
|
|
|
|
// check for a function prototype or declaraction
|
|
if ( CheckToken( "(" ) ) {
|
|
ParseFunctionDef( newtype.FieldType(), name );
|
|
} else {
|
|
type = gameLocal.program.GetType( newtype, true );
|
|
assert( !type->def );
|
|
gameLocal.program.AllocDef( type, name, scope, true );
|
|
objtype->AddField( type, name );
|
|
ExpectToken( ";" );
|
|
}
|
|
} while( !CheckToken( "}" ) );
|
|
|
|
scope = oldscope;
|
|
|
|
ExpectToken( ";" );
|
|
}
|
|
|
|
/*
|
|
============
|
|
idCompiler::ParseFunction
|
|
|
|
parse a function type
|
|
============
|
|
*/
|
|
idTypeDef *idCompiler::ParseFunction( idTypeDef *returnType, const char *name ) {
|
|
idTypeDef newtype( ev_function, NULL, name, type_function.Size(), returnType );
|
|
idTypeDef *type;
|
|
|
|
if ( scope->Type() != ev_namespace ) {
|
|
// create self pointer
|
|
newtype.AddFunctionParm( scope->TypeDef(), "self" );
|
|
}
|
|
|
|
if ( !CheckToken( ")" ) ) {
|
|
idStr parmName;
|
|
do {
|
|
type = ParseType();
|
|
ParseName( parmName );
|
|
newtype.AddFunctionParm( type, parmName );
|
|
} while( CheckToken( "," ) );
|
|
|
|
ExpectToken( ")" );
|
|
}
|
|
|
|
return gameLocal.program.GetType( newtype, true );
|
|
}
|
|
|
|
/*
|
|
================
|
|
idCompiler::ParseFunctionDef
|
|
================
|
|
*/
|
|
void idCompiler::ParseFunctionDef( idTypeDef *returnType, const char *name ) {
|
|
idTypeDef *type;
|
|
idVarDef *def;
|
|
const idVarDef *parm;
|
|
idVarDef *oldscope;
|
|
int i;
|
|
int numParms;
|
|
const idTypeDef *parmType;
|
|
function_t *func;
|
|
statement_t *pos;
|
|
|
|
if ( ( scope->Type() != ev_namespace ) && !scope->TypeDef()->Inherits( &type_object ) ) {
|
|
Error( "Functions may not be defined within other functions" );
|
|
}
|
|
|
|
type = ParseFunction( returnType, name );
|
|
def = gameLocal.program.GetDef( type, name, scope );
|
|
if ( !def ) {
|
|
def = gameLocal.program.AllocDef( type, name, scope, true );
|
|
type->def = def;
|
|
|
|
func = &gameLocal.program.AllocFunction( def );
|
|
if ( scope->TypeDef()->Inherits( &type_object ) ) {
|
|
scope->TypeDef()->AddFunction( func );
|
|
}
|
|
} else {
|
|
func = def->value.functionPtr;
|
|
assert( func );
|
|
if ( func->firstStatement ) {
|
|
Error( "%s redeclared", def->GlobalName() );
|
|
}
|
|
}
|
|
|
|
// check if this is a prototype or declaration
|
|
if ( !CheckToken( "{" ) ) {
|
|
// it's just a prototype, so get the ; and move on
|
|
ExpectToken( ";" );
|
|
return;
|
|
}
|
|
|
|
// calculate stack space used by parms
|
|
numParms = type->NumParameters();
|
|
func->parmSize.SetNum( numParms );
|
|
for( i = 0; i < numParms; i++ ) {
|
|
parmType = type->GetParmType( i );
|
|
if ( parmType->Inherits( &type_object ) ) {
|
|
func->parmSize[ i ] = type_object.Size();
|
|
} else {
|
|
func->parmSize[ i ] = parmType->Size();
|
|
}
|
|
func->parmTotal += func->parmSize[ i ];
|
|
}
|
|
|
|
// define the parms
|
|
for( i = 0; i < numParms; i++ ) {
|
|
if ( gameLocal.program.GetDef( type->GetParmType( i ), type->GetParmName( i ), def ) ) {
|
|
Error( "'%s' defined more than once in function parameters", type->GetParmName( i ) );
|
|
}
|
|
parm = gameLocal.program.AllocDef( type->GetParmType( i ), type->GetParmName( i ), def, false );
|
|
}
|
|
|
|
oldscope = scope;
|
|
scope = def;
|
|
|
|
func->firstStatement = gameLocal.program.NumStatements();
|
|
|
|
// check if we should call the super class constructor
|
|
if ( oldscope->TypeDef()->Inherits( &type_object ) && !idStr::Icmp( name, "init" ) ) {
|
|
idTypeDef *superClass;
|
|
function_t *constructorFunc = NULL;
|
|
|
|
// find the superclass constructor
|
|
for( superClass = oldscope->TypeDef()->SuperClass(); superClass != &type_object; superClass = superClass->SuperClass() ) {
|
|
constructorFunc = gameLocal.program.FindFunction( va( "%s::init", superClass->Name() ) );
|
|
if ( constructorFunc ) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
// emit the call to the constructor
|
|
if ( constructorFunc ) {
|
|
idVarDef *selfDef = gameLocal.program.GetDef( type->GetParmType( 0 ), type->GetParmName( 0 ), def );
|
|
assert( selfDef );
|
|
EmitPush( selfDef, selfDef->TypeDef() );
|
|
EmitOpcode( &opcodes[ OP_CALL ], constructorFunc->def, 0 );
|
|
}
|
|
}
|
|
|
|
// parse regular statements
|
|
while( !CheckToken( "}" ) ) {
|
|
ParseStatement();
|
|
}
|
|
|
|
// check if we should call the super class destructor
|
|
if ( oldscope->TypeDef()->Inherits( &type_object ) && !idStr::Icmp( name, "destroy" ) ) {
|
|
idTypeDef *superClass;
|
|
function_t *destructorFunc = NULL;
|
|
|
|
// find the superclass destructor
|
|
for( superClass = oldscope->TypeDef()->SuperClass(); superClass != &type_object; superClass = superClass->SuperClass() ) {
|
|
destructorFunc = gameLocal.program.FindFunction( va( "%s::destroy", superClass->Name() ) );
|
|
if ( destructorFunc ) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
if ( destructorFunc ) {
|
|
if ( func->firstStatement < gameLocal.program.NumStatements() ) {
|
|
// change all returns to point to the call to the destructor
|
|
pos = &gameLocal.program.GetStatement( func->firstStatement );
|
|
for( i = func->firstStatement; i < gameLocal.program.NumStatements(); i++, pos++ ) {
|
|
if ( pos->op == OP_RETURN ) {
|
|
pos->op = OP_GOTO;
|
|
pos->a = JumpDef( i, gameLocal.program.NumStatements() );
|
|
}
|
|
}
|
|
}
|
|
|
|
// emit the call to the destructor
|
|
idVarDef *selfDef = gameLocal.program.GetDef( type->GetParmType( 0 ), type->GetParmName( 0 ), def );
|
|
assert( selfDef );
|
|
EmitPush( selfDef, selfDef->TypeDef() );
|
|
EmitOpcode( &opcodes[ OP_CALL ], destructorFunc->def, 0 );
|
|
}
|
|
}
|
|
|
|
// Disabled code since it caused a function to fall through to the next function when last statement is in the form "if ( x ) { return; }"
|
|
#if 0
|
|
// don't bother adding a return opcode if the "return" statement was used.
|
|
if ( ( func->firstStatement == gameLocal.program.NumStatements() ) || ( gameLocal.program.GetStatement( gameLocal.program.NumStatements() - 1 ).op != OP_RETURN ) ) {
|
|
// emit an end of statements opcode
|
|
EmitOpcode( OP_RETURN, 0, 0 );
|
|
}
|
|
#else
|
|
// always emit the return opcode
|
|
EmitOpcode( OP_RETURN, 0, 0 );
|
|
#endif
|
|
|
|
// record the number of statements in the function
|
|
func->numStatements = gameLocal.program.NumStatements() - func->firstStatement;
|
|
|
|
scope = oldscope;
|
|
}
|
|
|
|
/*
|
|
================
|
|
idCompiler::ParseVariableDef
|
|
================
|
|
*/
|
|
void idCompiler::ParseVariableDef( idTypeDef *type, const char *name ) {
|
|
idVarDef *def, *def2;
|
|
bool negate;
|
|
|
|
def = gameLocal.program.GetDef( type, name, scope );
|
|
if ( def ) {
|
|
Error( "%s redeclared", name );
|
|
}
|
|
|
|
def = gameLocal.program.AllocDef( type, name, scope, false );
|
|
|
|
// check for an initialization
|
|
if ( CheckToken( "=" ) ) {
|
|
// if a local variable in a function then write out interpreter code to initialize variable
|
|
if ( scope->Type() == ev_function ) {
|
|
def2 = GetExpression( TOP_PRIORITY );
|
|
if ( ( type == &type_float ) && ( def2->TypeDef() == &type_float ) ) {
|
|
EmitOpcode( OP_STORE_F, def2, def );
|
|
} else if ( ( type == &type_vector ) && ( def2->TypeDef() == &type_vector ) ) {
|
|
EmitOpcode( OP_STORE_V, def2, def );
|
|
} else if ( ( type == &type_string ) && ( def2->TypeDef() == &type_string ) ) {
|
|
EmitOpcode( OP_STORE_S, def2, def );
|
|
} else if ( ( type == &type_entity ) && ( ( def2->TypeDef() == &type_entity ) || ( def2->TypeDef()->Inherits( &type_object ) ) ) ) {
|
|
EmitOpcode( OP_STORE_ENT, def2, def );
|
|
} else if ( ( type->Inherits( &type_object ) ) && ( def2->TypeDef() == &type_entity ) ) {
|
|
EmitOpcode( OP_STORE_OBJENT, def2, def );
|
|
} else if ( ( type->Inherits( &type_object ) ) && ( def2->TypeDef()->Inherits( type ) ) ) {
|
|
EmitOpcode( OP_STORE_OBJ, def2, def );
|
|
} else if ( ( type == &type_boolean ) && ( def2->TypeDef() == &type_boolean ) ) {
|
|
EmitOpcode( OP_STORE_BOOL, def2, def );
|
|
} else if ( ( type == &type_string ) && ( def2->TypeDef() == &type_float ) ) {
|
|
EmitOpcode( OP_STORE_FTOS, def2, def );
|
|
} else if ( ( type == &type_string ) && ( def2->TypeDef() == &type_boolean ) ) {
|
|
EmitOpcode( OP_STORE_BTOS, def2, def );
|
|
} else if ( ( type == &type_string ) && ( def2->TypeDef() == &type_vector ) ) {
|
|
EmitOpcode( OP_STORE_VTOS, def2, def );
|
|
} else if ( ( type == &type_boolean ) && ( def2->TypeDef() == &type_float ) ) {
|
|
EmitOpcode( OP_STORE_FTOBOOL, def2, def );
|
|
} else if ( ( type == &type_float ) && ( def2->TypeDef() == &type_boolean ) ) {
|
|
EmitOpcode( OP_STORE_BOOLTOF, def2, def );
|
|
} else {
|
|
Error( "bad initialization for '%s'", name );
|
|
}
|
|
} else {
|
|
// global variables can only be initialized with immediate values
|
|
negate = false;
|
|
if ( token.type == TT_PUNCTUATION && token == "-" ) {
|
|
negate = true;
|
|
NextToken();
|
|
if ( immediateType != &type_float ) {
|
|
Error( "wrong immediate type for '-' on variable '%s'", name );
|
|
}
|
|
}
|
|
|
|
if ( immediateType != type ) {
|
|
Error( "wrong immediate type for '%s'", name );
|
|
}
|
|
|
|
// global variables are initialized at start up
|
|
if ( type == &type_string ) {
|
|
def->SetString( token, false );
|
|
} else {
|
|
if ( negate ) {
|
|
immediate._float = -immediate._float;
|
|
}
|
|
def->SetValue( immediate, false );
|
|
}
|
|
NextToken();
|
|
}
|
|
} else if ( type == &type_string ) {
|
|
// local strings on the stack are initialized in the interpreter
|
|
if ( scope->Type() != ev_function ) {
|
|
def->SetString( "", false );
|
|
}
|
|
} else if ( type->Inherits( &type_object ) ) {
|
|
if ( scope->Type() != ev_function ) {
|
|
def->SetObject( NULL );
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
================
|
|
idCompiler::GetTypeForEventArg
|
|
================
|
|
*/
|
|
idTypeDef *idCompiler::GetTypeForEventArg( char argType ) {
|
|
idTypeDef *type;
|
|
|
|
switch( argType ) {
|
|
case D_EVENT_INTEGER :
|
|
// this will get converted to int by the interpreter
|
|
type = &type_float;
|
|
break;
|
|
|
|
case D_EVENT_FLOAT :
|
|
type = &type_float;
|
|
break;
|
|
|
|
case D_EVENT_VECTOR :
|
|
type = &type_vector;
|
|
break;
|
|
|
|
case D_EVENT_STRING :
|
|
type = &type_string;
|
|
break;
|
|
|
|
case D_EVENT_ENTITY :
|
|
case D_EVENT_ENTITY_NULL :
|
|
type = &type_entity;
|
|
break;
|
|
|
|
case D_EVENT_VOID :
|
|
type = &type_void;
|
|
break;
|
|
|
|
case D_EVENT_TRACE :
|
|
// This data type isn't available from script
|
|
type = NULL;
|
|
break;
|
|
|
|
default:
|
|
// probably a typo
|
|
type = NULL;
|
|
break;
|
|
}
|
|
|
|
return type;
|
|
}
|
|
|
|
/*
|
|
================
|
|
idCompiler::ParseEventDef
|
|
================
|
|
*/
|
|
void idCompiler::ParseEventDef( idTypeDef *returnType, const char *name ) {
|
|
const idTypeDef *expectedType;
|
|
idTypeDef *argType;
|
|
idTypeDef *type;
|
|
int i;
|
|
int num;
|
|
const char *format;
|
|
const idEventDef *ev;
|
|
idStr parmName;
|
|
|
|
ev = idEventDef::FindEvent( name );
|
|
if ( !ev ) {
|
|
Error( "Unknown event '%s'", name );
|
|
}
|
|
|
|
// set the return type
|
|
expectedType = GetTypeForEventArg( ev->GetReturnType() );
|
|
if ( !expectedType ) {
|
|
Error( "Invalid return type '%c' in definition of '%s' event.", ev->GetReturnType(), name );
|
|
}
|
|
if ( returnType != expectedType ) {
|
|
Error( "Return type doesn't match internal return type '%s'", expectedType->Name() );
|
|
}
|
|
|
|
idTypeDef newtype( ev_function, NULL, name, type_function.Size(), returnType );
|
|
|
|
ExpectToken( "(" );
|
|
|
|
format = ev->GetArgFormat();
|
|
num = strlen( format );
|
|
for( i = 0; i < num; i++ ) {
|
|
expectedType = GetTypeForEventArg( format[ i ] );
|
|
if ( !expectedType || ( expectedType == &type_void ) ) {
|
|
Error( "Invalid parameter '%c' in definition of '%s' event.", format[ i ], name );
|
|
}
|
|
|
|
argType = ParseType();
|
|
ParseName( parmName );
|
|
if ( argType != expectedType ) {
|
|
Error( "The type of parm %d ('%s') does not match the internal type '%s' in definition of '%s' event.",
|
|
i + 1, parmName.c_str(), expectedType->Name(), name );
|
|
}
|
|
|
|
newtype.AddFunctionParm( argType, "" );
|
|
|
|
if ( i < num - 1 ) {
|
|
if ( CheckToken( ")" ) ) {
|
|
Error( "Too few parameters for event definition. Internal definition has %d parameters.", num );
|
|
}
|
|
ExpectToken( "," );
|
|
}
|
|
}
|
|
if ( !CheckToken( ")" ) ) {
|
|
Error( "Too many parameters for event definition. Internal definition has %d parameters.", num );
|
|
}
|
|
ExpectToken( ";" );
|
|
|
|
type = gameLocal.program.FindType( name );
|
|
if ( type ) {
|
|
if ( !newtype.MatchesType( *type ) || ( type->def->value.functionPtr->eventdef != ev ) ) {
|
|
Error( "Type mismatch on redefinition of '%s'", name );
|
|
}
|
|
} else {
|
|
type = gameLocal.program.AllocType( newtype );
|
|
type->def = gameLocal.program.AllocDef( type, name, &def_namespace, true );
|
|
|
|
function_t &func = gameLocal.program.AllocFunction( type->def );
|
|
func.eventdef = ev;
|
|
func.parmSize.SetNum( num );
|
|
for( i = 0; i < num; i++ ) {
|
|
argType = newtype.GetParmType( i );
|
|
func.parmTotal += argType->Size();
|
|
func.parmSize[ i ] = argType->Size();
|
|
}
|
|
|
|
// mark the parms as local
|
|
func.locals = func.parmTotal;
|
|
}
|
|
}
|
|
|
|
/*
|
|
================
|
|
idCompiler::ParseDefs
|
|
|
|
Called at the outer layer and when a local statement is hit
|
|
================
|
|
*/
|
|
void idCompiler::ParseDefs( void ) {
|
|
idStr name;
|
|
idTypeDef *type;
|
|
idVarDef *def;
|
|
idVarDef *oldscope;
|
|
|
|
if ( CheckToken( ";" ) ) {
|
|
// skip semicolons, which are harmless and ok syntax
|
|
return;
|
|
}
|
|
|
|
type = ParseType();
|
|
if ( type == &type_scriptevent ) {
|
|
type = ParseType();
|
|
ParseName( name );
|
|
ParseEventDef( type, name );
|
|
return;
|
|
}
|
|
|
|
ParseName( name );
|
|
|
|
if ( type == &type_namespace ) {
|
|
def = gameLocal.program.GetDef( type, name, scope );
|
|
if ( !def ) {
|
|
def = gameLocal.program.AllocDef( type, name, scope, true );
|
|
}
|
|
ParseNamespace( def );
|
|
} else if ( CheckToken( "::" ) ) {
|
|
def = gameLocal.program.GetDef( NULL, name, scope );
|
|
if ( !def ) {
|
|
Error( "Unknown object name '%s'", name.c_str() );
|
|
}
|
|
ParseName( name );
|
|
oldscope = scope;
|
|
scope = def;
|
|
|
|
ExpectToken( "(" );
|
|
ParseFunctionDef( type, name.c_str() );
|
|
scope = oldscope;
|
|
} else if ( type == &type_object ) {
|
|
ParseObjectDef( name.c_str() );
|
|
} else if ( CheckToken( "(" ) ) { // check for a function prototype or declaraction
|
|
ParseFunctionDef( type, name.c_str() );
|
|
} else {
|
|
ParseVariableDef( type, name.c_str() );
|
|
while( CheckToken( "," ) ) {
|
|
ParseName( name );
|
|
ParseVariableDef( type, name.c_str() );
|
|
}
|
|
ExpectToken( ";" );
|
|
}
|
|
}
|
|
|
|
/*
|
|
================
|
|
idCompiler::ParseNamespace
|
|
|
|
Parses anything within a namespace definition
|
|
================
|
|
*/
|
|
void idCompiler::ParseNamespace( idVarDef *newScope ) {
|
|
idVarDef *oldscope;
|
|
|
|
oldscope = scope;
|
|
if ( newScope != &def_namespace ) {
|
|
ExpectToken( "{" );
|
|
}
|
|
|
|
while( !eof ) {
|
|
scope = newScope;
|
|
callthread = false;
|
|
|
|
if ( ( newScope != &def_namespace ) && CheckToken( "}" ) ) {
|
|
break;
|
|
}
|
|
|
|
ParseDefs();
|
|
}
|
|
|
|
scope = oldscope;
|
|
}
|
|
|
|
/*
|
|
============
|
|
idCompiler::CompileFile
|
|
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compiles the 0 terminated text, adding definitions to the program structure
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============
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*/
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void idCompiler::CompileFile( const char *text, const char *filename, bool toConsole ) {
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idTimer compile_time;
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bool error;
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compile_time.Start();
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scope = &def_namespace;
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basetype = NULL;
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callthread = false;
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loopDepth = 0;
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eof = false;
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braceDepth = 0;
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immediateType = NULL;
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currentLineNumber = 0;
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console = toConsole;
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memset( &immediate, 0, sizeof( immediate ) );
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parser.SetFlags( LEXFL_ALLOWMULTICHARLITERALS );
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parser.LoadMemory( text, strlen( text ), filename );
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parserPtr = &parser;
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// unread tokens to include script defines
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token = SCRIPT_DEFAULTDEFS;
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token.type = TT_STRING;
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token.subtype = token.Length();
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token.line = token.linesCrossed = 0;
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parser.UnreadToken( &token );
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token = "include";
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token.type = TT_NAME;
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token.subtype = token.Length();
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token.line = token.linesCrossed = 0;
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parser.UnreadToken( &token );
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token = "#";
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token.type = TT_PUNCTUATION;
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token.subtype = P_PRECOMP;
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token.line = token.linesCrossed = 0;
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parser.UnreadToken( &token );
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// init the current token line to be the first line so that currentLineNumber is set correctly in NextToken
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token.line = 1;
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error = false;
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try {
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// read first token
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NextToken();
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while( !eof && !error ) {
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// parse from global namespace
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ParseNamespace( &def_namespace );
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}
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}
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catch( idCompileError &err ) {
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idStr error;
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if ( console ) {
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// don't print line number of an error if were calling script from the console using the "script" command
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sprintf( error, "Error: %s\n", err.error );
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} else {
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sprintf( error, "Error: file %s, line %d: %s\n", gameLocal.program.GetFilename( currentFileNumber ), currentLineNumber, err.error );
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}
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parser.FreeSource();
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throw idCompileError( error );
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}
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parser.FreeSource();
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compile_time.Stop();
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if ( !toConsole ) {
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gameLocal.Printf( "Compiled '%s': %.1f ms\n", filename, compile_time.Milliseconds() );
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}
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}
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