mirror of
https://github.com/godotengine/godot
synced 2024-11-02 08:18:44 +00:00
2067 lines
68 KiB
C++
2067 lines
68 KiB
C++
/*************************************************************************/
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/* gdscript_compiler.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2018 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2018 Godot Engine contributors (cf. AUTHORS.md) */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#include "gdscript_compiler.h"
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#include "gdscript.h"
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bool GDScriptCompiler::_is_class_member_property(CodeGen &codegen, const StringName &p_name) {
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if (!codegen.function_node || codegen.function_node->_static)
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return false;
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return _is_class_member_property(codegen.script, p_name);
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}
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bool GDScriptCompiler::_is_class_member_property(GDScript *owner, const StringName &p_name) {
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GDScript *scr = owner;
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GDScriptNativeClass *nc = NULL;
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while (scr) {
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if (scr->native.is_valid())
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nc = scr->native.ptr();
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scr = scr->_base;
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}
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ERR_FAIL_COND_V(!nc, false);
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return ClassDB::has_property(nc->get_name(), p_name);
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}
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void GDScriptCompiler::_set_error(const String &p_error, const GDScriptParser::Node *p_node) {
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if (error != "")
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return;
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error = p_error;
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if (p_node) {
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err_line = p_node->line;
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err_column = p_node->column;
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} else {
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err_line = 0;
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err_column = 0;
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}
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}
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bool GDScriptCompiler::_create_unary_operator(CodeGen &codegen, const GDScriptParser::OperatorNode *on, Variant::Operator op, int p_stack_level) {
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ERR_FAIL_COND_V(on->arguments.size() != 1, false);
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int src_address_a = _parse_expression(codegen, on->arguments[0], p_stack_level);
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if (src_address_a < 0)
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return false;
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codegen.opcodes.push_back(GDScriptFunction::OPCODE_OPERATOR); // perform operator
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codegen.opcodes.push_back(op); //which operator
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codegen.opcodes.push_back(src_address_a); // argument 1
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codegen.opcodes.push_back(src_address_a); // argument 2 (repeated)
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//codegen.opcodes.push_back(GDScriptFunction::ADDR_TYPE_NIL); // argument 2 (unary only takes one parameter)
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return true;
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}
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bool GDScriptCompiler::_create_binary_operator(CodeGen &codegen, const GDScriptParser::OperatorNode *on, Variant::Operator op, int p_stack_level, bool p_initializer) {
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ERR_FAIL_COND_V(on->arguments.size() != 2, false);
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int src_address_a = _parse_expression(codegen, on->arguments[0], p_stack_level, false, p_initializer);
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if (src_address_a < 0)
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return false;
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if (src_address_a & GDScriptFunction::ADDR_TYPE_STACK << GDScriptFunction::ADDR_BITS)
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p_stack_level++; //uses stack for return, increase stack
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int src_address_b = _parse_expression(codegen, on->arguments[1], p_stack_level, false, p_initializer);
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if (src_address_b < 0)
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return false;
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codegen.opcodes.push_back(GDScriptFunction::OPCODE_OPERATOR); // perform operator
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codegen.opcodes.push_back(op); //which operator
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codegen.opcodes.push_back(src_address_a); // argument 1
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codegen.opcodes.push_back(src_address_b); // argument 2 (unary only takes one parameter)
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return true;
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}
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/*
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int GDScriptCompiler::_parse_subexpression(CodeGen& codegen,const GDScriptParser::Node *p_expression) {
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int ret = _parse_expression(codegen,p_expression);
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if (ret<0)
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return ret;
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if (ret&(GDScriptFunction::ADDR_TYPE_STACK<<GDScriptFunction::ADDR_BITS)) {
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codegen.stack_level++;
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codegen.check_max_stack_level();
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//stack was used, keep value
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}
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return ret;
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}
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*/
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int GDScriptCompiler::_parse_assign_right_expression(CodeGen &codegen, const GDScriptParser::OperatorNode *p_expression, int p_stack_level) {
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Variant::Operator var_op = Variant::OP_MAX;
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switch (p_expression->op) {
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case GDScriptParser::OperatorNode::OP_ASSIGN_ADD: var_op = Variant::OP_ADD; break;
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case GDScriptParser::OperatorNode::OP_ASSIGN_SUB: var_op = Variant::OP_SUBTRACT; break;
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case GDScriptParser::OperatorNode::OP_ASSIGN_MUL: var_op = Variant::OP_MULTIPLY; break;
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case GDScriptParser::OperatorNode::OP_ASSIGN_DIV: var_op = Variant::OP_DIVIDE; break;
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case GDScriptParser::OperatorNode::OP_ASSIGN_MOD: var_op = Variant::OP_MODULE; break;
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case GDScriptParser::OperatorNode::OP_ASSIGN_SHIFT_LEFT: var_op = Variant::OP_SHIFT_LEFT; break;
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case GDScriptParser::OperatorNode::OP_ASSIGN_SHIFT_RIGHT: var_op = Variant::OP_SHIFT_RIGHT; break;
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case GDScriptParser::OperatorNode::OP_ASSIGN_BIT_AND: var_op = Variant::OP_BIT_AND; break;
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case GDScriptParser::OperatorNode::OP_ASSIGN_BIT_OR: var_op = Variant::OP_BIT_OR; break;
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case GDScriptParser::OperatorNode::OP_ASSIGN_BIT_XOR: var_op = Variant::OP_BIT_XOR; break;
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case GDScriptParser::OperatorNode::OP_INIT_ASSIGN:
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case GDScriptParser::OperatorNode::OP_ASSIGN: {
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//none
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} break;
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default: {
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ERR_FAIL_V(-1);
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}
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}
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bool initializer = p_expression->op == GDScriptParser::OperatorNode::OP_INIT_ASSIGN;
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if (var_op == Variant::OP_MAX) {
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return _parse_expression(codegen, p_expression->arguments[1], p_stack_level, false, initializer);
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}
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if (!_create_binary_operator(codegen, p_expression, var_op, p_stack_level, initializer))
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return -1;
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int dst_addr = (p_stack_level) | (GDScriptFunction::ADDR_TYPE_STACK << GDScriptFunction::ADDR_BITS);
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codegen.opcodes.push_back(dst_addr); // append the stack level as destination address of the opcode
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codegen.alloc_stack(p_stack_level);
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return dst_addr;
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}
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int GDScriptCompiler::_parse_expression(CodeGen &codegen, const GDScriptParser::Node *p_expression, int p_stack_level, bool p_root, bool p_initializer) {
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switch (p_expression->type) {
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//should parse variable declaration and adjust stack accordingly...
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case GDScriptParser::Node::TYPE_IDENTIFIER: {
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//return identifier
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//wait, identifier could be a local variable or something else... careful here, must reference properly
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//as stack may be more interesting to work with
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//This could be made much simpler by just indexing "self", but done this way (with custom self-addressing modes) increases peformance a lot.
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const GDScriptParser::IdentifierNode *in = static_cast<const GDScriptParser::IdentifierNode *>(p_expression);
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StringName identifier = in->name;
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if (_is_class_member_property(codegen, identifier)) {
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//get property
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codegen.opcodes.push_back(GDScriptFunction::OPCODE_GET_MEMBER); // perform operator
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codegen.opcodes.push_back(codegen.get_name_map_pos(identifier)); // argument 2 (unary only takes one parameter)
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int dst_addr = (p_stack_level) | (GDScriptFunction::ADDR_TYPE_STACK << GDScriptFunction::ADDR_BITS);
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codegen.opcodes.push_back(dst_addr); // append the stack level as destination address of the opcode
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codegen.alloc_stack(p_stack_level);
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return dst_addr;
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}
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// TRY STACK!
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if (!p_initializer && codegen.stack_identifiers.has(identifier)) {
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int pos = codegen.stack_identifiers[identifier];
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return pos | (GDScriptFunction::ADDR_TYPE_STACK_VARIABLE << GDScriptFunction::ADDR_BITS);
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}
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//TRY MEMBERS!
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if (!codegen.function_node || !codegen.function_node->_static) {
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// TRY MEMBER VARIABLES!
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//static function
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if (codegen.script->member_indices.has(identifier)) {
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int idx = codegen.script->member_indices[identifier].index;
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return idx | (GDScriptFunction::ADDR_TYPE_MEMBER << GDScriptFunction::ADDR_BITS); //argument (stack root)
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}
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}
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//TRY CLASS CONSTANTS
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GDScript *owner = codegen.script;
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while (owner) {
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GDScript *scr = owner;
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GDScriptNativeClass *nc = NULL;
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while (scr) {
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if (scr->constants.has(identifier)) {
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//int idx=scr->constants[identifier];
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int idx = codegen.get_name_map_pos(identifier);
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return idx | (GDScriptFunction::ADDR_TYPE_CLASS_CONSTANT << GDScriptFunction::ADDR_BITS); //argument (stack root)
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}
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if (scr->native.is_valid())
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nc = scr->native.ptr();
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scr = scr->_base;
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}
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// CLASS C++ Integer Constant
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if (nc) {
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bool success = false;
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int constant = ClassDB::get_integer_constant(nc->get_name(), identifier, &success);
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if (success) {
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Variant key = constant;
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int idx;
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if (!codegen.constant_map.has(key)) {
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idx = codegen.constant_map.size();
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codegen.constant_map[key] = idx;
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} else {
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idx = codegen.constant_map[key];
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}
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return idx | (GDScriptFunction::ADDR_TYPE_LOCAL_CONSTANT << GDScriptFunction::ADDR_BITS); //make it a local constant (faster access)
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}
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}
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owner = owner->_owner;
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}
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/*
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handled in constants now
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if (codegen.script->subclasses.has(identifier)) {
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//same with a subclass, make it a local constant.
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int idx = codegen.get_constant_pos(codegen.script->subclasses[identifier]);
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return idx|(GDScriptFunction::ADDR_TYPE_LOCAL_CONSTANT<<GDScriptFunction::ADDR_BITS); //make it a local constant (faster access)
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}*/
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if (GDScriptLanguage::get_singleton()->get_global_map().has(identifier)) {
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int idx = GDScriptLanguage::get_singleton()->get_global_map()[identifier];
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return idx | (GDScriptFunction::ADDR_TYPE_GLOBAL << GDScriptFunction::ADDR_BITS); //argument (stack root)
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}
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//not found, error
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_set_error("Identifier not found: " + String(identifier), p_expression);
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return -1;
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} break;
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case GDScriptParser::Node::TYPE_CONSTANT: {
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//return constant
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const GDScriptParser::ConstantNode *cn = static_cast<const GDScriptParser::ConstantNode *>(p_expression);
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int idx;
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if (!codegen.constant_map.has(cn->value)) {
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idx = codegen.constant_map.size();
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codegen.constant_map[cn->value] = idx;
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} else {
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idx = codegen.constant_map[cn->value];
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}
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return idx | (GDScriptFunction::ADDR_TYPE_LOCAL_CONSTANT << GDScriptFunction::ADDR_BITS); //argument (stack root)
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} break;
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case GDScriptParser::Node::TYPE_SELF: {
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//return constant
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if (codegen.function_node && codegen.function_node->_static) {
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_set_error("'self' not present in static function!", p_expression);
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return -1;
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}
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return (GDScriptFunction::ADDR_TYPE_SELF << GDScriptFunction::ADDR_BITS);
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} break;
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case GDScriptParser::Node::TYPE_ARRAY: {
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const GDScriptParser::ArrayNode *an = static_cast<const GDScriptParser::ArrayNode *>(p_expression);
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Vector<int> values;
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int slevel = p_stack_level;
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for (int i = 0; i < an->elements.size(); i++) {
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int ret = _parse_expression(codegen, an->elements[i], slevel);
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if (ret < 0)
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return ret;
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if (ret & GDScriptFunction::ADDR_TYPE_STACK << GDScriptFunction::ADDR_BITS) {
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slevel++;
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codegen.alloc_stack(slevel);
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}
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values.push_back(ret);
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}
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codegen.opcodes.push_back(GDScriptFunction::OPCODE_CONSTRUCT_ARRAY);
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codegen.opcodes.push_back(values.size());
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for (int i = 0; i < values.size(); i++)
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codegen.opcodes.push_back(values[i]);
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int dst_addr = (p_stack_level) | (GDScriptFunction::ADDR_TYPE_STACK << GDScriptFunction::ADDR_BITS);
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codegen.opcodes.push_back(dst_addr); // append the stack level as destination address of the opcode
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codegen.alloc_stack(p_stack_level);
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return dst_addr;
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} break;
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case GDScriptParser::Node::TYPE_DICTIONARY: {
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const GDScriptParser::DictionaryNode *dn = static_cast<const GDScriptParser::DictionaryNode *>(p_expression);
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Vector<int> values;
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int slevel = p_stack_level;
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for (int i = 0; i < dn->elements.size(); i++) {
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int ret = _parse_expression(codegen, dn->elements[i].key, slevel);
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if (ret < 0)
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return ret;
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if (ret & GDScriptFunction::ADDR_TYPE_STACK << GDScriptFunction::ADDR_BITS) {
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slevel++;
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codegen.alloc_stack(slevel);
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}
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values.push_back(ret);
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ret = _parse_expression(codegen, dn->elements[i].value, slevel);
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if (ret < 0)
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return ret;
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if (ret & GDScriptFunction::ADDR_TYPE_STACK << GDScriptFunction::ADDR_BITS) {
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slevel++;
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codegen.alloc_stack(slevel);
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}
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values.push_back(ret);
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}
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codegen.opcodes.push_back(GDScriptFunction::OPCODE_CONSTRUCT_DICTIONARY);
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codegen.opcodes.push_back(dn->elements.size());
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for (int i = 0; i < values.size(); i++)
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codegen.opcodes.push_back(values[i]);
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int dst_addr = (p_stack_level) | (GDScriptFunction::ADDR_TYPE_STACK << GDScriptFunction::ADDR_BITS);
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codegen.opcodes.push_back(dst_addr); // append the stack level as destination address of the opcode
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codegen.alloc_stack(p_stack_level);
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return dst_addr;
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} break;
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case GDScriptParser::Node::TYPE_OPERATOR: {
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//hell breaks loose
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const GDScriptParser::OperatorNode *on = static_cast<const GDScriptParser::OperatorNode *>(p_expression);
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switch (on->op) {
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//call/constructor operator
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case GDScriptParser::OperatorNode::OP_PARENT_CALL: {
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ERR_FAIL_COND_V(on->arguments.size() < 1, -1);
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const GDScriptParser::IdentifierNode *in = (const GDScriptParser::IdentifierNode *)on->arguments[0];
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Vector<int> arguments;
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int slevel = p_stack_level;
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for (int i = 1; i < on->arguments.size(); i++) {
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int ret = _parse_expression(codegen, on->arguments[i], slevel);
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if (ret < 0)
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return ret;
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if (ret & GDScriptFunction::ADDR_TYPE_STACK << GDScriptFunction::ADDR_BITS) {
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slevel++;
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codegen.alloc_stack(slevel);
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}
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arguments.push_back(ret);
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}
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//push call bytecode
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codegen.opcodes.push_back(GDScriptFunction::OPCODE_CALL_SELF_BASE); // basic type constructor
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codegen.opcodes.push_back(codegen.get_name_map_pos(in->name)); //instance
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codegen.opcodes.push_back(arguments.size()); //argument count
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codegen.alloc_call(arguments.size());
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for (int i = 0; i < arguments.size(); i++)
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codegen.opcodes.push_back(arguments[i]); //arguments
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} break;
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case GDScriptParser::OperatorNode::OP_CALL: {
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if (on->arguments[0]->type == GDScriptParser::Node::TYPE_TYPE) {
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//construct a basic type
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ERR_FAIL_COND_V(on->arguments.size() < 1, -1);
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const GDScriptParser::TypeNode *tn = (const GDScriptParser::TypeNode *)on->arguments[0];
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int vtype = tn->vtype;
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Vector<int> arguments;
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int slevel = p_stack_level;
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for (int i = 1; i < on->arguments.size(); i++) {
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int ret = _parse_expression(codegen, on->arguments[i], slevel);
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if (ret < 0)
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return ret;
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if (ret & GDScriptFunction::ADDR_TYPE_STACK << GDScriptFunction::ADDR_BITS) {
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slevel++;
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codegen.alloc_stack(slevel);
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}
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arguments.push_back(ret);
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}
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//push call bytecode
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codegen.opcodes.push_back(GDScriptFunction::OPCODE_CONSTRUCT); // basic type constructor
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codegen.opcodes.push_back(vtype); //instance
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codegen.opcodes.push_back(arguments.size()); //argument count
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codegen.alloc_call(arguments.size());
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for (int i = 0; i < arguments.size(); i++)
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codegen.opcodes.push_back(arguments[i]); //arguments
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} else if (on->arguments[0]->type == GDScriptParser::Node::TYPE_BUILT_IN_FUNCTION) {
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//built in function
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ERR_FAIL_COND_V(on->arguments.size() < 1, -1);
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Vector<int> arguments;
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int slevel = p_stack_level;
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for (int i = 1; i < on->arguments.size(); i++) {
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int ret = _parse_expression(codegen, on->arguments[i], slevel);
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if (ret < 0)
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return ret;
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if (ret & GDScriptFunction::ADDR_TYPE_STACK << GDScriptFunction::ADDR_BITS) {
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slevel++;
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codegen.alloc_stack(slevel);
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}
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|
|
arguments.push_back(ret);
|
|
}
|
|
|
|
codegen.opcodes.push_back(GDScriptFunction::OPCODE_CALL_BUILT_IN);
|
|
codegen.opcodes.push_back(static_cast<const GDScriptParser::BuiltInFunctionNode *>(on->arguments[0])->function);
|
|
codegen.opcodes.push_back(on->arguments.size() - 1);
|
|
codegen.alloc_call(on->arguments.size() - 1);
|
|
for (int i = 0; i < arguments.size(); i++)
|
|
codegen.opcodes.push_back(arguments[i]);
|
|
|
|
} else {
|
|
//regular function
|
|
ERR_FAIL_COND_V(on->arguments.size() < 2, -1);
|
|
|
|
const GDScriptParser::Node *instance = on->arguments[0];
|
|
|
|
if (instance->type == GDScriptParser::Node::TYPE_SELF) {
|
|
//room for optimization
|
|
}
|
|
|
|
Vector<int> arguments;
|
|
int slevel = p_stack_level;
|
|
|
|
for (int i = 0; i < on->arguments.size(); i++) {
|
|
|
|
int ret;
|
|
|
|
if (i == 0 && on->arguments[i]->type == GDScriptParser::Node::TYPE_SELF && codegen.function_node && codegen.function_node->_static) {
|
|
//static call to self
|
|
ret = (GDScriptFunction::ADDR_TYPE_CLASS << GDScriptFunction::ADDR_BITS);
|
|
} else if (i == 1) {
|
|
|
|
if (on->arguments[i]->type != GDScriptParser::Node::TYPE_IDENTIFIER) {
|
|
_set_error("Attempt to call a non-identifier.", on);
|
|
return -1;
|
|
}
|
|
GDScriptParser::IdentifierNode *id = static_cast<GDScriptParser::IdentifierNode *>(on->arguments[i]);
|
|
ret = codegen.get_name_map_pos(id->name);
|
|
|
|
} else {
|
|
|
|
ret = _parse_expression(codegen, on->arguments[i], slevel);
|
|
if (ret < 0)
|
|
return ret;
|
|
if (ret & GDScriptFunction::ADDR_TYPE_STACK << GDScriptFunction::ADDR_BITS) {
|
|
slevel++;
|
|
codegen.alloc_stack(slevel);
|
|
}
|
|
}
|
|
arguments.push_back(ret);
|
|
}
|
|
|
|
codegen.opcodes.push_back(p_root ? GDScriptFunction::OPCODE_CALL : GDScriptFunction::OPCODE_CALL_RETURN); // perform operator
|
|
codegen.opcodes.push_back(on->arguments.size() - 2);
|
|
codegen.alloc_call(on->arguments.size() - 2);
|
|
for (int i = 0; i < arguments.size(); i++)
|
|
codegen.opcodes.push_back(arguments[i]);
|
|
}
|
|
} break;
|
|
case GDScriptParser::OperatorNode::OP_YIELD: {
|
|
|
|
ERR_FAIL_COND_V(on->arguments.size() && on->arguments.size() != 2, -1);
|
|
|
|
Vector<int> arguments;
|
|
int slevel = p_stack_level;
|
|
for (int i = 0; i < on->arguments.size(); i++) {
|
|
|
|
int ret = _parse_expression(codegen, on->arguments[i], slevel);
|
|
if (ret < 0)
|
|
return ret;
|
|
if (ret & (GDScriptFunction::ADDR_TYPE_STACK << GDScriptFunction::ADDR_BITS)) {
|
|
slevel++;
|
|
codegen.alloc_stack(slevel);
|
|
}
|
|
arguments.push_back(ret);
|
|
}
|
|
|
|
//push call bytecode
|
|
codegen.opcodes.push_back(arguments.size() == 0 ? GDScriptFunction::OPCODE_YIELD : GDScriptFunction::OPCODE_YIELD_SIGNAL); // basic type constructor
|
|
for (int i = 0; i < arguments.size(); i++)
|
|
codegen.opcodes.push_back(arguments[i]); //arguments
|
|
codegen.opcodes.push_back(GDScriptFunction::OPCODE_YIELD_RESUME);
|
|
//next will be where to place the result :)
|
|
|
|
} break;
|
|
|
|
//indexing operator
|
|
case GDScriptParser::OperatorNode::OP_INDEX:
|
|
case GDScriptParser::OperatorNode::OP_INDEX_NAMED: {
|
|
|
|
ERR_FAIL_COND_V(on->arguments.size() != 2, -1);
|
|
|
|
int slevel = p_stack_level;
|
|
bool named = (on->op == GDScriptParser::OperatorNode::OP_INDEX_NAMED);
|
|
|
|
int from = _parse_expression(codegen, on->arguments[0], slevel);
|
|
if (from < 0)
|
|
return from;
|
|
|
|
int index;
|
|
if (named) {
|
|
if (on->arguments[0]->type == GDScriptParser::Node::TYPE_SELF && codegen.script && codegen.function_node && !codegen.function_node->_static) {
|
|
|
|
GDScriptParser::IdentifierNode *identifier = static_cast<GDScriptParser::IdentifierNode *>(on->arguments[1]);
|
|
const Map<StringName, GDScript::MemberInfo>::Element *MI = codegen.script->member_indices.find(identifier->name);
|
|
|
|
#ifdef DEBUG_ENABLED
|
|
if (MI && MI->get().getter == codegen.function_node->name) {
|
|
String n = static_cast<GDScriptParser::IdentifierNode *>(on->arguments[1])->name;
|
|
_set_error("Must use '" + n + "' instead of 'self." + n + "' in getter.", on);
|
|
return -1;
|
|
}
|
|
#endif
|
|
|
|
if (MI && MI->get().getter == "") {
|
|
// Faster than indexing self (as if no self. had been used)
|
|
return (MI->get().index) | (GDScriptFunction::ADDR_TYPE_MEMBER << GDScriptFunction::ADDR_BITS);
|
|
}
|
|
}
|
|
|
|
index = codegen.get_name_map_pos(static_cast<GDScriptParser::IdentifierNode *>(on->arguments[1])->name);
|
|
|
|
} else {
|
|
|
|
if (on->arguments[1]->type == GDScriptParser::Node::TYPE_CONSTANT && static_cast<const GDScriptParser::ConstantNode *>(on->arguments[1])->value.get_type() == Variant::STRING) {
|
|
//also, somehow, named (speed up anyway)
|
|
StringName name = static_cast<const GDScriptParser::ConstantNode *>(on->arguments[1])->value;
|
|
index = codegen.get_name_map_pos(name);
|
|
named = true;
|
|
|
|
} else {
|
|
//regular indexing
|
|
if (from & GDScriptFunction::ADDR_TYPE_STACK << GDScriptFunction::ADDR_BITS) {
|
|
slevel++;
|
|
codegen.alloc_stack(slevel);
|
|
}
|
|
|
|
index = _parse_expression(codegen, on->arguments[1], slevel);
|
|
if (index < 0)
|
|
return index;
|
|
}
|
|
}
|
|
|
|
codegen.opcodes.push_back(named ? GDScriptFunction::OPCODE_GET_NAMED : GDScriptFunction::OPCODE_GET); // perform operator
|
|
codegen.opcodes.push_back(from); // argument 1
|
|
codegen.opcodes.push_back(index); // argument 2 (unary only takes one parameter)
|
|
|
|
} break;
|
|
case GDScriptParser::OperatorNode::OP_AND: {
|
|
|
|
// AND operator with early out on failure
|
|
|
|
int res = _parse_expression(codegen, on->arguments[0], p_stack_level);
|
|
if (res < 0)
|
|
return res;
|
|
codegen.opcodes.push_back(GDScriptFunction::OPCODE_JUMP_IF_NOT);
|
|
codegen.opcodes.push_back(res);
|
|
int jump_fail_pos = codegen.opcodes.size();
|
|
codegen.opcodes.push_back(0);
|
|
|
|
res = _parse_expression(codegen, on->arguments[1], p_stack_level);
|
|
if (res < 0)
|
|
return res;
|
|
|
|
codegen.opcodes.push_back(GDScriptFunction::OPCODE_JUMP_IF_NOT);
|
|
codegen.opcodes.push_back(res);
|
|
int jump_fail_pos2 = codegen.opcodes.size();
|
|
codegen.opcodes.push_back(0);
|
|
|
|
codegen.alloc_stack(p_stack_level); //it will be used..
|
|
codegen.opcodes.push_back(GDScriptFunction::OPCODE_ASSIGN_TRUE);
|
|
codegen.opcodes.push_back(p_stack_level | GDScriptFunction::ADDR_TYPE_STACK << GDScriptFunction::ADDR_BITS);
|
|
codegen.opcodes.push_back(GDScriptFunction::OPCODE_JUMP);
|
|
codegen.opcodes.push_back(codegen.opcodes.size() + 3);
|
|
codegen.opcodes[jump_fail_pos] = codegen.opcodes.size();
|
|
codegen.opcodes[jump_fail_pos2] = codegen.opcodes.size();
|
|
codegen.opcodes.push_back(GDScriptFunction::OPCODE_ASSIGN_FALSE);
|
|
codegen.opcodes.push_back(p_stack_level | GDScriptFunction::ADDR_TYPE_STACK << GDScriptFunction::ADDR_BITS);
|
|
return p_stack_level | GDScriptFunction::ADDR_TYPE_STACK << GDScriptFunction::ADDR_BITS;
|
|
|
|
} break;
|
|
case GDScriptParser::OperatorNode::OP_OR: {
|
|
|
|
// OR operator with early out on success
|
|
|
|
int res = _parse_expression(codegen, on->arguments[0], p_stack_level);
|
|
if (res < 0)
|
|
return res;
|
|
codegen.opcodes.push_back(GDScriptFunction::OPCODE_JUMP_IF);
|
|
codegen.opcodes.push_back(res);
|
|
int jump_success_pos = codegen.opcodes.size();
|
|
codegen.opcodes.push_back(0);
|
|
|
|
res = _parse_expression(codegen, on->arguments[1], p_stack_level);
|
|
if (res < 0)
|
|
return res;
|
|
|
|
codegen.opcodes.push_back(GDScriptFunction::OPCODE_JUMP_IF);
|
|
codegen.opcodes.push_back(res);
|
|
int jump_success_pos2 = codegen.opcodes.size();
|
|
codegen.opcodes.push_back(0);
|
|
|
|
codegen.alloc_stack(p_stack_level); //it will be used..
|
|
codegen.opcodes.push_back(GDScriptFunction::OPCODE_ASSIGN_FALSE);
|
|
codegen.opcodes.push_back(p_stack_level | GDScriptFunction::ADDR_TYPE_STACK << GDScriptFunction::ADDR_BITS);
|
|
codegen.opcodes.push_back(GDScriptFunction::OPCODE_JUMP);
|
|
codegen.opcodes.push_back(codegen.opcodes.size() + 3);
|
|
codegen.opcodes[jump_success_pos] = codegen.opcodes.size();
|
|
codegen.opcodes[jump_success_pos2] = codegen.opcodes.size();
|
|
codegen.opcodes.push_back(GDScriptFunction::OPCODE_ASSIGN_TRUE);
|
|
codegen.opcodes.push_back(p_stack_level | GDScriptFunction::ADDR_TYPE_STACK << GDScriptFunction::ADDR_BITS);
|
|
return p_stack_level | GDScriptFunction::ADDR_TYPE_STACK << GDScriptFunction::ADDR_BITS;
|
|
|
|
} break;
|
|
// ternary operators
|
|
case GDScriptParser::OperatorNode::OP_TERNARY_IF: {
|
|
|
|
// x IF a ELSE y operator with early out on failure
|
|
|
|
int res = _parse_expression(codegen, on->arguments[0], p_stack_level);
|
|
if (res < 0)
|
|
return res;
|
|
codegen.opcodes.push_back(GDScriptFunction::OPCODE_JUMP_IF_NOT);
|
|
codegen.opcodes.push_back(res);
|
|
int jump_fail_pos = codegen.opcodes.size();
|
|
codegen.opcodes.push_back(0);
|
|
|
|
res = _parse_expression(codegen, on->arguments[1], p_stack_level);
|
|
if (res < 0)
|
|
return res;
|
|
|
|
codegen.alloc_stack(p_stack_level); //it will be used..
|
|
codegen.opcodes.push_back(GDScriptFunction::OPCODE_ASSIGN);
|
|
codegen.opcodes.push_back(p_stack_level | GDScriptFunction::ADDR_TYPE_STACK << GDScriptFunction::ADDR_BITS);
|
|
codegen.opcodes.push_back(res);
|
|
codegen.opcodes.push_back(GDScriptFunction::OPCODE_JUMP);
|
|
int jump_past_pos = codegen.opcodes.size();
|
|
codegen.opcodes.push_back(0);
|
|
|
|
codegen.opcodes[jump_fail_pos] = codegen.opcodes.size();
|
|
res = _parse_expression(codegen, on->arguments[2], p_stack_level);
|
|
if (res < 0)
|
|
return res;
|
|
|
|
codegen.opcodes.push_back(GDScriptFunction::OPCODE_ASSIGN);
|
|
codegen.opcodes.push_back(p_stack_level | GDScriptFunction::ADDR_TYPE_STACK << GDScriptFunction::ADDR_BITS);
|
|
codegen.opcodes.push_back(res);
|
|
|
|
codegen.opcodes[jump_past_pos] = codegen.opcodes.size();
|
|
|
|
return p_stack_level | GDScriptFunction::ADDR_TYPE_STACK << GDScriptFunction::ADDR_BITS;
|
|
|
|
} break;
|
|
//unary operators
|
|
case GDScriptParser::OperatorNode::OP_NEG: {
|
|
if (!_create_unary_operator(codegen, on, Variant::OP_NEGATE, p_stack_level)) return -1;
|
|
} break;
|
|
case GDScriptParser::OperatorNode::OP_NOT: {
|
|
if (!_create_unary_operator(codegen, on, Variant::OP_NOT, p_stack_level)) return -1;
|
|
} break;
|
|
case GDScriptParser::OperatorNode::OP_BIT_INVERT: {
|
|
if (!_create_unary_operator(codegen, on, Variant::OP_BIT_NEGATE, p_stack_level)) return -1;
|
|
} break;
|
|
case GDScriptParser::OperatorNode::OP_PREINC: {
|
|
} break; //?
|
|
case GDScriptParser::OperatorNode::OP_PREDEC: {
|
|
} break;
|
|
case GDScriptParser::OperatorNode::OP_INC: {
|
|
} break;
|
|
case GDScriptParser::OperatorNode::OP_DEC: {
|
|
} break;
|
|
//binary operators (in precedence order)
|
|
case GDScriptParser::OperatorNode::OP_IN: {
|
|
if (!_create_binary_operator(codegen, on, Variant::OP_IN, p_stack_level)) return -1;
|
|
} break;
|
|
case GDScriptParser::OperatorNode::OP_EQUAL: {
|
|
if (!_create_binary_operator(codegen, on, Variant::OP_EQUAL, p_stack_level)) return -1;
|
|
} break;
|
|
case GDScriptParser::OperatorNode::OP_NOT_EQUAL: {
|
|
if (!_create_binary_operator(codegen, on, Variant::OP_NOT_EQUAL, p_stack_level)) return -1;
|
|
} break;
|
|
case GDScriptParser::OperatorNode::OP_LESS: {
|
|
if (!_create_binary_operator(codegen, on, Variant::OP_LESS, p_stack_level)) return -1;
|
|
} break;
|
|
case GDScriptParser::OperatorNode::OP_LESS_EQUAL: {
|
|
if (!_create_binary_operator(codegen, on, Variant::OP_LESS_EQUAL, p_stack_level)) return -1;
|
|
} break;
|
|
case GDScriptParser::OperatorNode::OP_GREATER: {
|
|
if (!_create_binary_operator(codegen, on, Variant::OP_GREATER, p_stack_level)) return -1;
|
|
} break;
|
|
case GDScriptParser::OperatorNode::OP_GREATER_EQUAL: {
|
|
if (!_create_binary_operator(codegen, on, Variant::OP_GREATER_EQUAL, p_stack_level)) return -1;
|
|
} break;
|
|
case GDScriptParser::OperatorNode::OP_ADD: {
|
|
if (!_create_binary_operator(codegen, on, Variant::OP_ADD, p_stack_level)) return -1;
|
|
} break;
|
|
case GDScriptParser::OperatorNode::OP_SUB: {
|
|
if (!_create_binary_operator(codegen, on, Variant::OP_SUBTRACT, p_stack_level)) return -1;
|
|
} break;
|
|
case GDScriptParser::OperatorNode::OP_MUL: {
|
|
if (!_create_binary_operator(codegen, on, Variant::OP_MULTIPLY, p_stack_level)) return -1;
|
|
} break;
|
|
case GDScriptParser::OperatorNode::OP_DIV: {
|
|
if (!_create_binary_operator(codegen, on, Variant::OP_DIVIDE, p_stack_level)) return -1;
|
|
} break;
|
|
case GDScriptParser::OperatorNode::OP_MOD: {
|
|
if (!_create_binary_operator(codegen, on, Variant::OP_MODULE, p_stack_level)) return -1;
|
|
} break;
|
|
//case GDScriptParser::OperatorNode::OP_SHIFT_LEFT: { if (!_create_binary_operator(codegen,on,Variant::OP_SHIFT_LEFT,p_stack_level)) return -1;} break;
|
|
//case GDScriptParser::OperatorNode::OP_SHIFT_RIGHT: { if (!_create_binary_operator(codegen,on,Variant::OP_SHIFT_RIGHT,p_stack_level)) return -1;} break;
|
|
case GDScriptParser::OperatorNode::OP_BIT_AND: {
|
|
if (!_create_binary_operator(codegen, on, Variant::OP_BIT_AND, p_stack_level)) return -1;
|
|
} break;
|
|
case GDScriptParser::OperatorNode::OP_BIT_OR: {
|
|
if (!_create_binary_operator(codegen, on, Variant::OP_BIT_OR, p_stack_level)) return -1;
|
|
} break;
|
|
case GDScriptParser::OperatorNode::OP_BIT_XOR: {
|
|
if (!_create_binary_operator(codegen, on, Variant::OP_BIT_XOR, p_stack_level)) return -1;
|
|
} break;
|
|
//shift
|
|
case GDScriptParser::OperatorNode::OP_SHIFT_LEFT: {
|
|
if (!_create_binary_operator(codegen, on, Variant::OP_SHIFT_LEFT, p_stack_level)) return -1;
|
|
} break;
|
|
case GDScriptParser::OperatorNode::OP_SHIFT_RIGHT: {
|
|
if (!_create_binary_operator(codegen, on, Variant::OP_SHIFT_RIGHT, p_stack_level)) return -1;
|
|
} break;
|
|
//assignment operators
|
|
case GDScriptParser::OperatorNode::OP_ASSIGN_ADD:
|
|
case GDScriptParser::OperatorNode::OP_ASSIGN_SUB:
|
|
case GDScriptParser::OperatorNode::OP_ASSIGN_MUL:
|
|
case GDScriptParser::OperatorNode::OP_ASSIGN_DIV:
|
|
case GDScriptParser::OperatorNode::OP_ASSIGN_MOD:
|
|
case GDScriptParser::OperatorNode::OP_ASSIGN_SHIFT_LEFT:
|
|
case GDScriptParser::OperatorNode::OP_ASSIGN_SHIFT_RIGHT:
|
|
case GDScriptParser::OperatorNode::OP_ASSIGN_BIT_AND:
|
|
case GDScriptParser::OperatorNode::OP_ASSIGN_BIT_OR:
|
|
case GDScriptParser::OperatorNode::OP_ASSIGN_BIT_XOR:
|
|
case GDScriptParser::OperatorNode::OP_INIT_ASSIGN:
|
|
case GDScriptParser::OperatorNode::OP_ASSIGN: {
|
|
|
|
ERR_FAIL_COND_V(on->arguments.size() != 2, -1);
|
|
|
|
if (on->arguments[0]->type == GDScriptParser::Node::TYPE_OPERATOR && (static_cast<GDScriptParser::OperatorNode *>(on->arguments[0])->op == GDScriptParser::OperatorNode::OP_INDEX || static_cast<GDScriptParser::OperatorNode *>(on->arguments[0])->op == GDScriptParser::OperatorNode::OP_INDEX_NAMED)) {
|
|
|
|
// SET (chained) MODE!
|
|
#ifdef DEBUG_ENABLED
|
|
if (static_cast<GDScriptParser::OperatorNode *>(on->arguments[0])->op == GDScriptParser::OperatorNode::OP_INDEX_NAMED) {
|
|
const GDScriptParser::OperatorNode *inon = static_cast<GDScriptParser::OperatorNode *>(on->arguments[0]);
|
|
|
|
if (inon->arguments[0]->type == GDScriptParser::Node::TYPE_SELF && codegen.script && codegen.function_node && !codegen.function_node->_static) {
|
|
|
|
const Map<StringName, GDScript::MemberInfo>::Element *MI = codegen.script->member_indices.find(static_cast<GDScriptParser::IdentifierNode *>(inon->arguments[1])->name);
|
|
if (MI && MI->get().setter == codegen.function_node->name) {
|
|
String n = static_cast<GDScriptParser::IdentifierNode *>(inon->arguments[1])->name;
|
|
_set_error("Must use '" + n + "' instead of 'self." + n + "' in setter.", inon);
|
|
return -1;
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
int slevel = p_stack_level;
|
|
|
|
GDScriptParser::OperatorNode *op = static_cast<GDScriptParser::OperatorNode *>(on->arguments[0]);
|
|
|
|
/* Find chain of sets */
|
|
|
|
StringName assign_property;
|
|
|
|
List<GDScriptParser::OperatorNode *> chain;
|
|
|
|
{
|
|
//create get/set chain
|
|
GDScriptParser::OperatorNode *n = op;
|
|
while (true) {
|
|
|
|
chain.push_back(n);
|
|
if (n->arguments[0]->type != GDScriptParser::Node::TYPE_OPERATOR) {
|
|
|
|
//check for a built-in property
|
|
if (n->arguments[0]->type == GDScriptParser::Node::TYPE_IDENTIFIER) {
|
|
|
|
GDScriptParser::IdentifierNode *identifier = static_cast<GDScriptParser::IdentifierNode *>(n->arguments[0]);
|
|
if (_is_class_member_property(codegen, identifier->name)) {
|
|
assign_property = identifier->name;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
n = static_cast<GDScriptParser::OperatorNode *>(n->arguments[0]);
|
|
if (n->op != GDScriptParser::OperatorNode::OP_INDEX && n->op != GDScriptParser::OperatorNode::OP_INDEX_NAMED)
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Chain of gets */
|
|
|
|
//get at (potential) root stack pos, so it can be returned
|
|
int prev_pos = _parse_expression(codegen, chain.back()->get()->arguments[0], slevel);
|
|
if (prev_pos < 0)
|
|
return prev_pos;
|
|
int retval = prev_pos;
|
|
|
|
//print_line("retval: "+itos(retval));
|
|
|
|
if (retval & GDScriptFunction::ADDR_TYPE_STACK << GDScriptFunction::ADDR_BITS) {
|
|
slevel++;
|
|
codegen.alloc_stack(slevel);
|
|
}
|
|
|
|
Vector<int> setchain;
|
|
|
|
if (assign_property != StringName()) {
|
|
|
|
// recover and assign at the end, this allows stuff like
|
|
// position.x+=2.0
|
|
// in Node2D
|
|
setchain.push_back(prev_pos);
|
|
setchain.push_back(codegen.get_name_map_pos(assign_property));
|
|
setchain.push_back(GDScriptFunction::OPCODE_SET_MEMBER);
|
|
}
|
|
|
|
for (List<GDScriptParser::OperatorNode *>::Element *E = chain.back(); E; E = E->prev()) {
|
|
|
|
if (E == chain.front()) //ignore first
|
|
break;
|
|
|
|
bool named = E->get()->op == GDScriptParser::OperatorNode::OP_INDEX_NAMED;
|
|
int key_idx;
|
|
|
|
if (named) {
|
|
|
|
key_idx = codegen.get_name_map_pos(static_cast<const GDScriptParser::IdentifierNode *>(E->get()->arguments[1])->name);
|
|
//printf("named key %x\n",key_idx);
|
|
|
|
} else {
|
|
|
|
if (prev_pos & (GDScriptFunction::ADDR_TYPE_STACK << GDScriptFunction::ADDR_BITS)) {
|
|
slevel++;
|
|
codegen.alloc_stack(slevel);
|
|
}
|
|
|
|
GDScriptParser::Node *key = E->get()->arguments[1];
|
|
key_idx = _parse_expression(codegen, key, slevel);
|
|
//printf("expr key %x\n",key_idx);
|
|
|
|
//stack was raised here if retval was stack but..
|
|
}
|
|
|
|
if (key_idx < 0) //error
|
|
return key_idx;
|
|
|
|
codegen.opcodes.push_back(named ? GDScriptFunction::OPCODE_GET_NAMED : GDScriptFunction::OPCODE_GET);
|
|
codegen.opcodes.push_back(prev_pos);
|
|
codegen.opcodes.push_back(key_idx);
|
|
slevel++;
|
|
codegen.alloc_stack(slevel);
|
|
int dst_pos = (GDScriptFunction::ADDR_TYPE_STACK << GDScriptFunction::ADDR_BITS) | slevel;
|
|
|
|
codegen.opcodes.push_back(dst_pos);
|
|
|
|
//add in reverse order, since it will be reverted
|
|
|
|
setchain.push_back(dst_pos);
|
|
setchain.push_back(key_idx);
|
|
setchain.push_back(prev_pos);
|
|
setchain.push_back(named ? GDScriptFunction::OPCODE_SET_NAMED : GDScriptFunction::OPCODE_SET);
|
|
|
|
prev_pos = dst_pos;
|
|
}
|
|
|
|
setchain.invert();
|
|
|
|
int set_index;
|
|
bool named = false;
|
|
|
|
if (static_cast<const GDScriptParser::OperatorNode *>(op)->op == GDScriptParser::OperatorNode::OP_INDEX_NAMED) {
|
|
|
|
set_index = codegen.get_name_map_pos(static_cast<const GDScriptParser::IdentifierNode *>(op->arguments[1])->name);
|
|
named = true;
|
|
} else {
|
|
|
|
set_index = _parse_expression(codegen, op->arguments[1], slevel + 1);
|
|
named = false;
|
|
}
|
|
|
|
if (set_index < 0) //error
|
|
return set_index;
|
|
|
|
if (set_index & GDScriptFunction::ADDR_TYPE_STACK << GDScriptFunction::ADDR_BITS) {
|
|
slevel++;
|
|
codegen.alloc_stack(slevel);
|
|
}
|
|
|
|
int set_value = _parse_assign_right_expression(codegen, on, slevel + 1);
|
|
if (set_value < 0) //error
|
|
return set_value;
|
|
|
|
codegen.opcodes.push_back(named ? GDScriptFunction::OPCODE_SET_NAMED : GDScriptFunction::OPCODE_SET);
|
|
codegen.opcodes.push_back(prev_pos);
|
|
codegen.opcodes.push_back(set_index);
|
|
codegen.opcodes.push_back(set_value);
|
|
|
|
for (int i = 0; i < setchain.size(); i++) {
|
|
|
|
codegen.opcodes.push_back(setchain[i]);
|
|
}
|
|
|
|
return retval;
|
|
|
|
} else if (on->arguments[0]->type == GDScriptParser::Node::TYPE_IDENTIFIER && _is_class_member_property(codegen, static_cast<GDScriptParser::IdentifierNode *>(on->arguments[0])->name)) {
|
|
//assignment to member property
|
|
|
|
int slevel = p_stack_level;
|
|
|
|
int src_address = _parse_assign_right_expression(codegen, on, slevel);
|
|
if (src_address < 0)
|
|
return -1;
|
|
|
|
StringName name = static_cast<GDScriptParser::IdentifierNode *>(on->arguments[0])->name;
|
|
|
|
codegen.opcodes.push_back(GDScriptFunction::OPCODE_SET_MEMBER);
|
|
codegen.opcodes.push_back(codegen.get_name_map_pos(name));
|
|
codegen.opcodes.push_back(src_address);
|
|
|
|
return GDScriptFunction::ADDR_TYPE_NIL << GDScriptFunction::ADDR_BITS;
|
|
} else {
|
|
|
|
//REGULAR ASSIGNMENT MODE!!
|
|
|
|
int slevel = p_stack_level;
|
|
|
|
int dst_address_a = _parse_expression(codegen, on->arguments[0], slevel, false, on->op == GDScriptParser::OperatorNode::OP_INIT_ASSIGN);
|
|
if (dst_address_a < 0)
|
|
return -1;
|
|
|
|
if (dst_address_a & GDScriptFunction::ADDR_TYPE_STACK << GDScriptFunction::ADDR_BITS) {
|
|
slevel++;
|
|
codegen.alloc_stack(slevel);
|
|
}
|
|
|
|
int src_address_b = _parse_assign_right_expression(codegen, on, slevel);
|
|
if (src_address_b < 0)
|
|
return -1;
|
|
|
|
codegen.opcodes.push_back(GDScriptFunction::OPCODE_ASSIGN); // perform operator
|
|
codegen.opcodes.push_back(dst_address_a); // argument 1
|
|
codegen.opcodes.push_back(src_address_b); // argument 2 (unary only takes one parameter)
|
|
return dst_address_a; //if anything, returns wathever was assigned or correct stack position
|
|
}
|
|
|
|
} break;
|
|
case GDScriptParser::OperatorNode::OP_IS: {
|
|
|
|
ERR_FAIL_COND_V(on->arguments.size() != 2, false);
|
|
|
|
int slevel = p_stack_level;
|
|
|
|
int src_address_a = _parse_expression(codegen, on->arguments[0], slevel);
|
|
if (src_address_a < 0)
|
|
return -1;
|
|
|
|
if (src_address_a & GDScriptFunction::ADDR_TYPE_STACK << GDScriptFunction::ADDR_BITS)
|
|
slevel++; //uses stack for return, increase stack
|
|
|
|
int src_address_b = _parse_expression(codegen, on->arguments[1], slevel);
|
|
if (src_address_b < 0)
|
|
return -1;
|
|
|
|
codegen.opcodes.push_back(GDScriptFunction::OPCODE_EXTENDS_TEST); // perform operator
|
|
codegen.opcodes.push_back(src_address_a); // argument 1
|
|
codegen.opcodes.push_back(src_address_b); // argument 2 (unary only takes one parameter)
|
|
|
|
} break;
|
|
default: {
|
|
|
|
ERR_EXPLAIN("Bug in bytecode compiler, unexpected operator #" + itos(on->op) + " in parse tree while parsing expression.");
|
|
ERR_FAIL_V(0); //unreachable code
|
|
|
|
} break;
|
|
}
|
|
|
|
int dst_addr = (p_stack_level) | (GDScriptFunction::ADDR_TYPE_STACK << GDScriptFunction::ADDR_BITS);
|
|
codegen.opcodes.push_back(dst_addr); // append the stack level as destination address of the opcode
|
|
codegen.alloc_stack(p_stack_level);
|
|
return dst_addr;
|
|
} break;
|
|
//TYPE_TYPE,
|
|
default: {
|
|
|
|
ERR_EXPLAIN("Bug in bytecode compiler, unexpected node in parse tree while parsing expression.");
|
|
ERR_FAIL_V(-1); //unreachable code
|
|
} break;
|
|
}
|
|
|
|
ERR_FAIL_V(-1); //unreachable code
|
|
}
|
|
|
|
Error GDScriptCompiler::_parse_block(CodeGen &codegen, const GDScriptParser::BlockNode *p_block, int p_stack_level, int p_break_addr, int p_continue_addr) {
|
|
|
|
codegen.push_stack_identifiers();
|
|
int new_identifiers = 0;
|
|
codegen.current_line = p_block->line;
|
|
|
|
for (int i = 0; i < p_block->statements.size(); i++) {
|
|
|
|
const GDScriptParser::Node *s = p_block->statements[i];
|
|
|
|
switch (s->type) {
|
|
case GDScriptParser::Node::TYPE_NEWLINE: {
|
|
#ifdef DEBUG_ENABLED
|
|
const GDScriptParser::NewLineNode *nl = static_cast<const GDScriptParser::NewLineNode *>(s);
|
|
codegen.opcodes.push_back(GDScriptFunction::OPCODE_LINE);
|
|
codegen.opcodes.push_back(nl->line);
|
|
codegen.current_line = nl->line;
|
|
#endif
|
|
} break;
|
|
case GDScriptParser::Node::TYPE_CONTROL_FLOW: {
|
|
// try subblocks
|
|
|
|
const GDScriptParser::ControlFlowNode *cf = static_cast<const GDScriptParser::ControlFlowNode *>(s);
|
|
|
|
switch (cf->cf_type) {
|
|
|
|
case GDScriptParser::ControlFlowNode::CF_MATCH: {
|
|
GDScriptParser::MatchNode *match = cf->match;
|
|
|
|
GDScriptParser::IdentifierNode *id = memnew(GDScriptParser::IdentifierNode);
|
|
id->name = "#match_value";
|
|
|
|
// var #match_value
|
|
// copied because there is no _parse_statement :(
|
|
codegen.add_stack_identifier(id->name, p_stack_level++);
|
|
codegen.alloc_stack(p_stack_level);
|
|
new_identifiers++;
|
|
|
|
GDScriptParser::OperatorNode *op = memnew(GDScriptParser::OperatorNode);
|
|
op->op = GDScriptParser::OperatorNode::OP_ASSIGN;
|
|
op->arguments.push_back(id);
|
|
op->arguments.push_back(match->val_to_match);
|
|
|
|
int ret = _parse_expression(codegen, op, p_stack_level);
|
|
if (ret < 0) {
|
|
return ERR_PARSE_ERROR;
|
|
}
|
|
|
|
// break address
|
|
codegen.opcodes.push_back(GDScriptFunction::OPCODE_JUMP);
|
|
codegen.opcodes.push_back(codegen.opcodes.size() + 3);
|
|
int break_addr = codegen.opcodes.size();
|
|
codegen.opcodes.push_back(GDScriptFunction::OPCODE_JUMP);
|
|
codegen.opcodes.push_back(0); // break addr
|
|
|
|
for (int j = 0; j < match->compiled_pattern_branches.size(); j++) {
|
|
GDScriptParser::MatchNode::CompiledPatternBranch branch = match->compiled_pattern_branches[j];
|
|
|
|
// jump over continue
|
|
// jump unconditionally
|
|
// continue address
|
|
// compile the condition
|
|
int ret = _parse_expression(codegen, branch.compiled_pattern, p_stack_level);
|
|
if (ret < 0) {
|
|
return ERR_PARSE_ERROR;
|
|
}
|
|
|
|
codegen.opcodes.push_back(GDScriptFunction::OPCODE_JUMP_IF);
|
|
codegen.opcodes.push_back(ret);
|
|
codegen.opcodes.push_back(codegen.opcodes.size() + 3);
|
|
int continue_addr = codegen.opcodes.size();
|
|
codegen.opcodes.push_back(GDScriptFunction::OPCODE_JUMP);
|
|
codegen.opcodes.push_back(0);
|
|
|
|
Error err = _parse_block(codegen, branch.body, p_stack_level, p_break_addr, continue_addr);
|
|
if (err) {
|
|
return ERR_PARSE_ERROR;
|
|
}
|
|
|
|
codegen.opcodes.push_back(GDScriptFunction::OPCODE_JUMP);
|
|
codegen.opcodes.push_back(break_addr);
|
|
|
|
codegen.opcodes[continue_addr + 1] = codegen.opcodes.size();
|
|
}
|
|
|
|
codegen.opcodes[break_addr + 1] = codegen.opcodes.size();
|
|
|
|
} break;
|
|
|
|
case GDScriptParser::ControlFlowNode::CF_IF: {
|
|
|
|
#ifdef DEBUG_ENABLED
|
|
codegen.opcodes.push_back(GDScriptFunction::OPCODE_LINE);
|
|
codegen.opcodes.push_back(cf->line);
|
|
codegen.current_line = cf->line;
|
|
#endif
|
|
int ret = _parse_expression(codegen, cf->arguments[0], p_stack_level, false);
|
|
if (ret < 0)
|
|
return ERR_PARSE_ERROR;
|
|
|
|
codegen.opcodes.push_back(GDScriptFunction::OPCODE_JUMP_IF_NOT);
|
|
codegen.opcodes.push_back(ret);
|
|
int else_addr = codegen.opcodes.size();
|
|
codegen.opcodes.push_back(0); //temporary
|
|
|
|
Error err = _parse_block(codegen, cf->body, p_stack_level, p_break_addr, p_continue_addr);
|
|
if (err)
|
|
return err;
|
|
|
|
if (cf->body_else) {
|
|
|
|
codegen.opcodes.push_back(GDScriptFunction::OPCODE_JUMP);
|
|
int end_addr = codegen.opcodes.size();
|
|
codegen.opcodes.push_back(0);
|
|
codegen.opcodes[else_addr] = codegen.opcodes.size();
|
|
|
|
Error err = _parse_block(codegen, cf->body_else, p_stack_level, p_break_addr, p_continue_addr);
|
|
if (err)
|
|
return err;
|
|
|
|
codegen.opcodes[end_addr] = codegen.opcodes.size();
|
|
} else {
|
|
//end without else
|
|
codegen.opcodes[else_addr] = codegen.opcodes.size();
|
|
}
|
|
|
|
} break;
|
|
case GDScriptParser::ControlFlowNode::CF_FOR: {
|
|
|
|
int slevel = p_stack_level;
|
|
int iter_stack_pos = slevel;
|
|
int iterator_pos = (slevel++) | (GDScriptFunction::ADDR_TYPE_STACK << GDScriptFunction::ADDR_BITS);
|
|
int counter_pos = (slevel++) | (GDScriptFunction::ADDR_TYPE_STACK << GDScriptFunction::ADDR_BITS);
|
|
int container_pos = (slevel++) | (GDScriptFunction::ADDR_TYPE_STACK << GDScriptFunction::ADDR_BITS);
|
|
codegen.alloc_stack(slevel);
|
|
|
|
codegen.push_stack_identifiers();
|
|
codegen.add_stack_identifier(static_cast<const GDScriptParser::IdentifierNode *>(cf->arguments[0])->name, iter_stack_pos);
|
|
|
|
int ret = _parse_expression(codegen, cf->arguments[1], slevel, false);
|
|
if (ret < 0)
|
|
return ERR_COMPILATION_FAILED;
|
|
|
|
//assign container
|
|
codegen.opcodes.push_back(GDScriptFunction::OPCODE_ASSIGN);
|
|
codegen.opcodes.push_back(container_pos);
|
|
codegen.opcodes.push_back(ret);
|
|
|
|
//begin loop
|
|
codegen.opcodes.push_back(GDScriptFunction::OPCODE_ITERATE_BEGIN);
|
|
codegen.opcodes.push_back(counter_pos);
|
|
codegen.opcodes.push_back(container_pos);
|
|
codegen.opcodes.push_back(codegen.opcodes.size() + 4);
|
|
codegen.opcodes.push_back(iterator_pos);
|
|
codegen.opcodes.push_back(GDScriptFunction::OPCODE_JUMP); //skip code for next
|
|
codegen.opcodes.push_back(codegen.opcodes.size() + 8);
|
|
//break loop
|
|
int break_pos = codegen.opcodes.size();
|
|
codegen.opcodes.push_back(GDScriptFunction::OPCODE_JUMP); //skip code for next
|
|
codegen.opcodes.push_back(0); //skip code for next
|
|
//next loop
|
|
int continue_pos = codegen.opcodes.size();
|
|
codegen.opcodes.push_back(GDScriptFunction::OPCODE_ITERATE);
|
|
codegen.opcodes.push_back(counter_pos);
|
|
codegen.opcodes.push_back(container_pos);
|
|
codegen.opcodes.push_back(break_pos);
|
|
codegen.opcodes.push_back(iterator_pos);
|
|
|
|
Error err = _parse_block(codegen, cf->body, slevel, break_pos, continue_pos);
|
|
if (err)
|
|
return err;
|
|
|
|
codegen.opcodes.push_back(GDScriptFunction::OPCODE_JUMP);
|
|
codegen.opcodes.push_back(continue_pos);
|
|
codegen.opcodes[break_pos + 1] = codegen.opcodes.size();
|
|
|
|
codegen.pop_stack_identifiers();
|
|
|
|
} break;
|
|
case GDScriptParser::ControlFlowNode::CF_WHILE: {
|
|
|
|
codegen.opcodes.push_back(GDScriptFunction::OPCODE_JUMP);
|
|
codegen.opcodes.push_back(codegen.opcodes.size() + 3);
|
|
int break_addr = codegen.opcodes.size();
|
|
codegen.opcodes.push_back(GDScriptFunction::OPCODE_JUMP);
|
|
codegen.opcodes.push_back(0);
|
|
int continue_addr = codegen.opcodes.size();
|
|
|
|
int ret = _parse_expression(codegen, cf->arguments[0], p_stack_level, false);
|
|
if (ret < 0)
|
|
return ERR_PARSE_ERROR;
|
|
codegen.opcodes.push_back(GDScriptFunction::OPCODE_JUMP_IF_NOT);
|
|
codegen.opcodes.push_back(ret);
|
|
codegen.opcodes.push_back(break_addr);
|
|
Error err = _parse_block(codegen, cf->body, p_stack_level, break_addr, continue_addr);
|
|
if (err)
|
|
return err;
|
|
codegen.opcodes.push_back(GDScriptFunction::OPCODE_JUMP);
|
|
codegen.opcodes.push_back(continue_addr);
|
|
|
|
codegen.opcodes[break_addr + 1] = codegen.opcodes.size();
|
|
|
|
} break;
|
|
case GDScriptParser::ControlFlowNode::CF_SWITCH: {
|
|
|
|
} break;
|
|
case GDScriptParser::ControlFlowNode::CF_BREAK: {
|
|
|
|
if (p_break_addr < 0) {
|
|
|
|
_set_error("'break'' not within loop", cf);
|
|
return ERR_COMPILATION_FAILED;
|
|
}
|
|
codegen.opcodes.push_back(GDScriptFunction::OPCODE_JUMP);
|
|
codegen.opcodes.push_back(p_break_addr);
|
|
|
|
} break;
|
|
case GDScriptParser::ControlFlowNode::CF_CONTINUE: {
|
|
|
|
if (p_continue_addr < 0) {
|
|
|
|
_set_error("'continue' not within loop", cf);
|
|
return ERR_COMPILATION_FAILED;
|
|
}
|
|
|
|
codegen.opcodes.push_back(GDScriptFunction::OPCODE_JUMP);
|
|
codegen.opcodes.push_back(p_continue_addr);
|
|
|
|
} break;
|
|
case GDScriptParser::ControlFlowNode::CF_RETURN: {
|
|
|
|
int ret;
|
|
|
|
if (cf->arguments.size()) {
|
|
|
|
ret = _parse_expression(codegen, cf->arguments[0], p_stack_level, false);
|
|
if (ret < 0)
|
|
return ERR_PARSE_ERROR;
|
|
|
|
} else {
|
|
|
|
ret = GDScriptFunction::ADDR_TYPE_NIL << GDScriptFunction::ADDR_BITS;
|
|
}
|
|
|
|
codegen.opcodes.push_back(GDScriptFunction::OPCODE_RETURN);
|
|
codegen.opcodes.push_back(ret);
|
|
|
|
} break;
|
|
}
|
|
} break;
|
|
case GDScriptParser::Node::TYPE_ASSERT: {
|
|
#ifdef DEBUG_ENABLED
|
|
// try subblocks
|
|
|
|
const GDScriptParser::AssertNode *as = static_cast<const GDScriptParser::AssertNode *>(s);
|
|
|
|
int ret = _parse_expression(codegen, as->condition, p_stack_level, false);
|
|
if (ret < 0)
|
|
return ERR_PARSE_ERROR;
|
|
|
|
codegen.opcodes.push_back(GDScriptFunction::OPCODE_ASSERT);
|
|
codegen.opcodes.push_back(ret);
|
|
#endif
|
|
} break;
|
|
case GDScriptParser::Node::TYPE_BREAKPOINT: {
|
|
#ifdef DEBUG_ENABLED
|
|
// try subblocks
|
|
codegen.opcodes.push_back(GDScriptFunction::OPCODE_BREAKPOINT);
|
|
#endif
|
|
} break;
|
|
case GDScriptParser::Node::TYPE_LOCAL_VAR: {
|
|
|
|
const GDScriptParser::LocalVarNode *lv = static_cast<const GDScriptParser::LocalVarNode *>(s);
|
|
|
|
if (_is_class_member_property(codegen, lv->name)) {
|
|
_set_error("Name for local variable '" + String(lv->name) + "' can't shadow class property of the same name.", lv);
|
|
return ERR_ALREADY_EXISTS;
|
|
}
|
|
|
|
codegen.add_stack_identifier(lv->name, p_stack_level++);
|
|
codegen.alloc_stack(p_stack_level);
|
|
new_identifiers++;
|
|
|
|
} break;
|
|
default: {
|
|
//expression
|
|
int ret = _parse_expression(codegen, s, p_stack_level, true);
|
|
if (ret < 0)
|
|
return ERR_PARSE_ERROR;
|
|
} break;
|
|
}
|
|
}
|
|
codegen.pop_stack_identifiers();
|
|
return OK;
|
|
}
|
|
|
|
Error GDScriptCompiler::_parse_function(GDScript *p_script, const GDScriptParser::ClassNode *p_class, const GDScriptParser::FunctionNode *p_func, bool p_for_ready) {
|
|
|
|
Vector<int> bytecode;
|
|
CodeGen codegen;
|
|
|
|
codegen.class_node = p_class;
|
|
codegen.script = p_script;
|
|
codegen.function_node = p_func;
|
|
codegen.stack_max = 0;
|
|
codegen.current_line = 0;
|
|
codegen.call_max = 0;
|
|
codegen.debug_stack = ScriptDebugger::get_singleton() != NULL;
|
|
Vector<StringName> argnames;
|
|
|
|
int stack_level = 0;
|
|
|
|
if (p_func) {
|
|
for (int i = 0; i < p_func->arguments.size(); i++) {
|
|
if (_is_class_member_property(p_script, p_func->arguments[i])) {
|
|
_set_error("Name for argument '" + String(p_func->arguments[i]) + "' can't shadow class property of the same name.", p_func);
|
|
return ERR_ALREADY_EXISTS;
|
|
}
|
|
codegen.add_stack_identifier(p_func->arguments[i], i);
|
|
#ifdef TOOLS_ENABLED
|
|
argnames.push_back(p_func->arguments[i]);
|
|
#endif
|
|
}
|
|
stack_level = p_func->arguments.size();
|
|
}
|
|
|
|
codegen.alloc_stack(stack_level);
|
|
|
|
/* Parse initializer -if applies- */
|
|
|
|
bool is_initializer = !p_for_ready && !p_func;
|
|
|
|
if (is_initializer || (p_func && String(p_func->name) == "_init")) {
|
|
//parse initializer for class members
|
|
if (!p_func && p_class->extends_used && p_script->native.is_null()) {
|
|
|
|
//call implicit parent constructor
|
|
codegen.opcodes.push_back(GDScriptFunction::OPCODE_CALL_SELF_BASE);
|
|
codegen.opcodes.push_back(codegen.get_name_map_pos("_init"));
|
|
codegen.opcodes.push_back(0);
|
|
codegen.opcodes.push_back((GDScriptFunction::ADDR_TYPE_STACK << GDScriptFunction::ADDR_BITS) | 0);
|
|
}
|
|
Error err = _parse_block(codegen, p_class->initializer, stack_level);
|
|
if (err)
|
|
return err;
|
|
is_initializer = true;
|
|
}
|
|
|
|
if (p_for_ready || (p_func && String(p_func->name) == "_ready")) {
|
|
//parse initializer for class members
|
|
if (p_class->ready->statements.size()) {
|
|
Error err = _parse_block(codegen, p_class->ready, stack_level);
|
|
if (err)
|
|
return err;
|
|
}
|
|
}
|
|
|
|
/* Parse default argument code -if applies- */
|
|
|
|
Vector<int> defarg_addr;
|
|
StringName func_name;
|
|
|
|
if (p_func) {
|
|
|
|
if (p_func->default_values.size()) {
|
|
|
|
codegen.opcodes.push_back(GDScriptFunction::OPCODE_JUMP_TO_DEF_ARGUMENT);
|
|
defarg_addr.push_back(codegen.opcodes.size());
|
|
for (int i = 0; i < p_func->default_values.size(); i++) {
|
|
|
|
_parse_expression(codegen, p_func->default_values[i], stack_level, true);
|
|
defarg_addr.push_back(codegen.opcodes.size());
|
|
}
|
|
|
|
defarg_addr.invert();
|
|
}
|
|
|
|
Error err = _parse_block(codegen, p_func->body, stack_level);
|
|
if (err)
|
|
return err;
|
|
|
|
func_name = p_func->name;
|
|
} else {
|
|
if (p_for_ready)
|
|
func_name = "_ready";
|
|
else
|
|
func_name = "_init";
|
|
}
|
|
|
|
codegen.opcodes.push_back(GDScriptFunction::OPCODE_END);
|
|
|
|
/*
|
|
if (String(p_func->name)=="") { //initializer func
|
|
gdfunc = &p_script->initializer;
|
|
*/
|
|
//} else { //regular func
|
|
p_script->member_functions[func_name] = memnew(GDScriptFunction);
|
|
GDScriptFunction *gdfunc = p_script->member_functions[func_name];
|
|
//}
|
|
|
|
if (p_func) {
|
|
gdfunc->_static = p_func->_static;
|
|
gdfunc->rpc_mode = p_func->rpc_mode;
|
|
}
|
|
|
|
#ifdef TOOLS_ENABLED
|
|
gdfunc->arg_names = argnames;
|
|
#endif
|
|
//constants
|
|
if (codegen.constant_map.size()) {
|
|
gdfunc->_constant_count = codegen.constant_map.size();
|
|
gdfunc->constants.resize(codegen.constant_map.size());
|
|
gdfunc->_constants_ptr = &gdfunc->constants[0];
|
|
const Variant *K = NULL;
|
|
while ((K = codegen.constant_map.next(K))) {
|
|
int idx = codegen.constant_map[*K];
|
|
gdfunc->constants[idx] = *K;
|
|
}
|
|
} else {
|
|
|
|
gdfunc->_constants_ptr = NULL;
|
|
gdfunc->_constant_count = 0;
|
|
}
|
|
//global names
|
|
if (codegen.name_map.size()) {
|
|
|
|
gdfunc->global_names.resize(codegen.name_map.size());
|
|
gdfunc->_global_names_ptr = &gdfunc->global_names[0];
|
|
for (Map<StringName, int>::Element *E = codegen.name_map.front(); E; E = E->next()) {
|
|
|
|
gdfunc->global_names[E->get()] = E->key();
|
|
}
|
|
gdfunc->_global_names_count = gdfunc->global_names.size();
|
|
|
|
} else {
|
|
gdfunc->_global_names_ptr = NULL;
|
|
gdfunc->_global_names_count = 0;
|
|
}
|
|
|
|
if (codegen.opcodes.size()) {
|
|
|
|
gdfunc->code = codegen.opcodes;
|
|
gdfunc->_code_ptr = &gdfunc->code[0];
|
|
gdfunc->_code_size = codegen.opcodes.size();
|
|
|
|
} else {
|
|
|
|
gdfunc->_code_ptr = NULL;
|
|
gdfunc->_code_size = 0;
|
|
}
|
|
|
|
if (defarg_addr.size()) {
|
|
|
|
gdfunc->default_arguments = defarg_addr;
|
|
gdfunc->_default_arg_count = defarg_addr.size() - 1;
|
|
gdfunc->_default_arg_ptr = &gdfunc->default_arguments[0];
|
|
} else {
|
|
gdfunc->_default_arg_count = 0;
|
|
gdfunc->_default_arg_ptr = NULL;
|
|
}
|
|
|
|
gdfunc->_argument_count = p_func ? p_func->arguments.size() : 0;
|
|
gdfunc->_stack_size = codegen.stack_max;
|
|
gdfunc->_call_size = codegen.call_max;
|
|
gdfunc->name = func_name;
|
|
#ifdef DEBUG_ENABLED
|
|
if (ScriptDebugger::get_singleton()) {
|
|
String signature;
|
|
//path
|
|
if (p_script->get_path() != String())
|
|
signature += p_script->get_path();
|
|
//loc
|
|
if (p_func) {
|
|
signature += "::" + itos(p_func->body->line);
|
|
} else {
|
|
signature += "::0";
|
|
}
|
|
|
|
//function and class
|
|
|
|
if (p_class->name) {
|
|
signature += "::" + String(p_class->name) + "." + String(func_name);
|
|
} else {
|
|
signature += "::" + String(func_name);
|
|
}
|
|
|
|
gdfunc->profile.signature = signature;
|
|
}
|
|
#endif
|
|
gdfunc->_script = p_script;
|
|
gdfunc->source = source;
|
|
|
|
#ifdef DEBUG_ENABLED
|
|
|
|
{
|
|
gdfunc->func_cname = (String(source) + " - " + String(func_name)).utf8();
|
|
gdfunc->_func_cname = gdfunc->func_cname.get_data();
|
|
}
|
|
|
|
#endif
|
|
if (p_func) {
|
|
gdfunc->_initial_line = p_func->line;
|
|
#ifdef TOOLS_ENABLED
|
|
|
|
p_script->member_lines[func_name] = p_func->line;
|
|
#endif
|
|
} else {
|
|
gdfunc->_initial_line = 0;
|
|
}
|
|
|
|
if (codegen.debug_stack)
|
|
gdfunc->stack_debug = codegen.stack_debug;
|
|
|
|
if (is_initializer)
|
|
p_script->initializer = gdfunc;
|
|
|
|
return OK;
|
|
}
|
|
|
|
Error GDScriptCompiler::_parse_class(GDScript *p_script, GDScript *p_owner, const GDScriptParser::ClassNode *p_class, bool p_keep_state) {
|
|
|
|
Map<StringName, Ref<GDScript> > old_subclasses;
|
|
|
|
if (p_keep_state) {
|
|
old_subclasses = p_script->subclasses;
|
|
}
|
|
|
|
p_script->native = Ref<GDScriptNativeClass>();
|
|
p_script->base = Ref<GDScript>();
|
|
p_script->_base = NULL;
|
|
p_script->members.clear();
|
|
p_script->constants.clear();
|
|
for (Map<StringName, GDScriptFunction *>::Element *E = p_script->member_functions.front(); E; E = E->next()) {
|
|
memdelete(E->get());
|
|
}
|
|
p_script->member_functions.clear();
|
|
p_script->member_indices.clear();
|
|
p_script->member_info.clear();
|
|
p_script->_signals.clear();
|
|
p_script->initializer = NULL;
|
|
|
|
p_script->subclasses.clear();
|
|
p_script->_owner = p_owner;
|
|
p_script->tool = p_class->tool;
|
|
p_script->name = p_class->name;
|
|
|
|
Ref<GDScriptNativeClass> native;
|
|
|
|
if (p_class->extends_used) {
|
|
//do inheritance
|
|
String path = p_class->extends_file;
|
|
|
|
Ref<GDScript> script;
|
|
|
|
if (path != "") {
|
|
//path (and optionally subclasses)
|
|
|
|
if (path.is_rel_path()) {
|
|
|
|
String base;
|
|
|
|
if (p_owner) {
|
|
GDScript *current_class = p_owner;
|
|
while (current_class != NULL) {
|
|
base = current_class->get_path();
|
|
if (base == "")
|
|
current_class = current_class->_owner;
|
|
else
|
|
break;
|
|
}
|
|
} else {
|
|
base = p_script->get_path();
|
|
}
|
|
|
|
if (base == "" || base.is_rel_path()) {
|
|
_set_error("Could not resolve relative path for parent class: " + path, p_class);
|
|
return ERR_FILE_NOT_FOUND;
|
|
}
|
|
path = base.get_base_dir().plus_file(path).simplify_path();
|
|
}
|
|
script = ResourceLoader::load(path);
|
|
if (script.is_null()) {
|
|
_set_error("Could not load base class: " + path, p_class);
|
|
return ERR_FILE_NOT_FOUND;
|
|
}
|
|
if (!script->valid) {
|
|
|
|
_set_error("Script not fully loaded (cyclic preload?): " + path, p_class);
|
|
return ERR_BUSY;
|
|
}
|
|
//print_line("EXTENDS PATH: "+path+" script is "+itos(script.is_valid())+" indices is "+itos(script->member_indices.size())+" valid? "+itos(script->valid));
|
|
|
|
if (p_class->extends_class.size()) {
|
|
|
|
for (int i = 0; i < p_class->extends_class.size(); i++) {
|
|
|
|
String sub = p_class->extends_class[i];
|
|
if (script->subclasses.has(sub)) {
|
|
|
|
Ref<Script> subclass = script->subclasses[sub]; //avoid reference from disappearing
|
|
script = subclass;
|
|
} else {
|
|
|
|
_set_error("Could not find subclass: " + sub, p_class);
|
|
return ERR_FILE_NOT_FOUND;
|
|
}
|
|
}
|
|
}
|
|
|
|
} else {
|
|
|
|
ERR_FAIL_COND_V(p_class->extends_class.size() == 0, ERR_BUG);
|
|
//look around for the subclasses
|
|
|
|
String base = p_class->extends_class[0];
|
|
GDScript *p = p_owner;
|
|
Ref<GDScript> base_class;
|
|
|
|
while (p) {
|
|
|
|
if (p->subclasses.has(base)) {
|
|
|
|
base_class = p->subclasses[base];
|
|
break;
|
|
}
|
|
|
|
if (p->constants.has(base)) {
|
|
|
|
base_class = p->constants[base];
|
|
if (base_class.is_null()) {
|
|
_set_error("Constant is not a class: " + base, p_class);
|
|
return ERR_SCRIPT_FAILED;
|
|
}
|
|
break;
|
|
}
|
|
|
|
p = p->_owner;
|
|
}
|
|
|
|
if (base_class.is_valid()) {
|
|
|
|
String ident = base;
|
|
|
|
for (int i = 1; i < p_class->extends_class.size(); i++) {
|
|
|
|
String subclass = p_class->extends_class[i];
|
|
|
|
ident += ("." + subclass);
|
|
|
|
if (base_class->subclasses.has(subclass)) {
|
|
|
|
base_class = base_class->subclasses[subclass];
|
|
} else if (base_class->constants.has(subclass)) {
|
|
|
|
Ref<GDScript> new_base_class = base_class->constants[subclass];
|
|
if (new_base_class.is_null()) {
|
|
_set_error("Constant is not a class: " + ident, p_class);
|
|
return ERR_SCRIPT_FAILED;
|
|
}
|
|
base_class = new_base_class;
|
|
} else {
|
|
|
|
_set_error("Could not find subclass: " + ident, p_class);
|
|
return ERR_FILE_NOT_FOUND;
|
|
}
|
|
}
|
|
|
|
script = base_class;
|
|
|
|
} else {
|
|
|
|
if (p_class->extends_class.size() > 1) {
|
|
|
|
_set_error("Invalid inheritance (unknown class+subclasses)", p_class);
|
|
return ERR_FILE_NOT_FOUND;
|
|
}
|
|
//if not found, try engine classes
|
|
if (!GDScriptLanguage::get_singleton()->get_global_map().has(base)) {
|
|
|
|
_set_error("Unknown class: '" + base + "'", p_class);
|
|
return ERR_FILE_NOT_FOUND;
|
|
}
|
|
|
|
int base_idx = GDScriptLanguage::get_singleton()->get_global_map()[base];
|
|
native = GDScriptLanguage::get_singleton()->get_global_array()[base_idx];
|
|
if (!native.is_valid()) {
|
|
|
|
_set_error("Global not a class: '" + base + "'", p_class);
|
|
|
|
return ERR_FILE_NOT_FOUND;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (script.is_valid()) {
|
|
|
|
p_script->base = script;
|
|
p_script->_base = p_script->base.ptr();
|
|
p_script->member_indices = script->member_indices;
|
|
|
|
} else if (native.is_valid()) {
|
|
|
|
p_script->native = native;
|
|
} else {
|
|
|
|
_set_error("Could not determine inheritance", p_class);
|
|
return ERR_FILE_NOT_FOUND;
|
|
}
|
|
|
|
} else {
|
|
// without extends, implicitly extend Reference
|
|
int native_idx = GDScriptLanguage::get_singleton()->get_global_map()["Reference"];
|
|
native = GDScriptLanguage::get_singleton()->get_global_array()[native_idx];
|
|
ERR_FAIL_COND_V(native.is_null(), ERR_BUG);
|
|
p_script->native = native;
|
|
}
|
|
|
|
//print_line("Script: "+p_script->get_path()+" indices: "+itos(p_script->member_indices.size()));
|
|
|
|
for (int i = 0; i < p_class->variables.size(); i++) {
|
|
|
|
StringName name = p_class->variables[i].identifier;
|
|
if (p_script->member_indices.has(name)) {
|
|
_set_error("Member '" + name + "' already exists (in current or parent class)", p_class);
|
|
return ERR_ALREADY_EXISTS;
|
|
}
|
|
if (_is_class_member_property(p_script, name)) {
|
|
_set_error("Member '" + name + "' already exists as a class property.", p_class);
|
|
return ERR_ALREADY_EXISTS;
|
|
}
|
|
|
|
if (p_class->variables[i]._export.type != Variant::NIL) {
|
|
|
|
p_script->member_info[name] = p_class->variables[i]._export;
|
|
#ifdef TOOLS_ENABLED
|
|
if (p_class->variables[i].default_value.get_type() != Variant::NIL) {
|
|
|
|
p_script->member_default_values[name] = p_class->variables[i].default_value;
|
|
}
|
|
#endif
|
|
} else {
|
|
|
|
p_script->member_info[name] = PropertyInfo(Variant::NIL, name, PROPERTY_HINT_NONE, "", PROPERTY_USAGE_SCRIPT_VARIABLE);
|
|
}
|
|
|
|
//int new_idx = p_script->member_indices.size();
|
|
GDScript::MemberInfo minfo;
|
|
minfo.index = p_script->member_indices.size();
|
|
minfo.setter = p_class->variables[i].setter;
|
|
minfo.getter = p_class->variables[i].getter;
|
|
minfo.rpc_mode = p_class->variables[i].rpc_mode;
|
|
|
|
p_script->member_indices[name] = minfo;
|
|
p_script->members.insert(name);
|
|
|
|
#ifdef TOOLS_ENABLED
|
|
|
|
p_script->member_lines[name] = p_class->variables[i].line;
|
|
#endif
|
|
}
|
|
|
|
for (int i = 0; i < p_class->constant_expressions.size(); i++) {
|
|
|
|
StringName name = p_class->constant_expressions[i].identifier;
|
|
ERR_CONTINUE(p_class->constant_expressions[i].expression->type != GDScriptParser::Node::TYPE_CONSTANT);
|
|
|
|
if (_is_class_member_property(p_script, name)) {
|
|
_set_error("Member '" + name + "' already exists as a class property.", p_class);
|
|
return ERR_ALREADY_EXISTS;
|
|
}
|
|
|
|
GDScriptParser::ConstantNode *constant = static_cast<GDScriptParser::ConstantNode *>(p_class->constant_expressions[i].expression);
|
|
|
|
p_script->constants.insert(name, constant->value);
|
|
//p_script->constants[constant->value].make_const();
|
|
#ifdef TOOLS_ENABLED
|
|
|
|
p_script->member_lines[name] = p_class->constant_expressions[i].expression->line;
|
|
#endif
|
|
}
|
|
|
|
for (int i = 0; i < p_class->_signals.size(); i++) {
|
|
|
|
StringName name = p_class->_signals[i].name;
|
|
|
|
GDScript *c = p_script;
|
|
|
|
while (c) {
|
|
|
|
if (c->_signals.has(name)) {
|
|
_set_error("Signal '" + name + "' redefined (in current or parent class)", p_class);
|
|
return ERR_ALREADY_EXISTS;
|
|
}
|
|
|
|
if (c->base.is_valid()) {
|
|
c = c->base.ptr();
|
|
} else {
|
|
c = NULL;
|
|
}
|
|
}
|
|
|
|
if (native.is_valid()) {
|
|
if (ClassDB::has_signal(native->get_name(), name)) {
|
|
_set_error("Signal '" + name + "' redefined (original in native class '" + String(native->get_name()) + "')", p_class);
|
|
return ERR_ALREADY_EXISTS;
|
|
}
|
|
}
|
|
|
|
p_script->_signals[name] = p_class->_signals[i].arguments;
|
|
}
|
|
//parse sub-classes
|
|
|
|
for (int i = 0; i < p_class->subclasses.size(); i++) {
|
|
StringName name = p_class->subclasses[i]->name;
|
|
|
|
Ref<GDScript> subclass;
|
|
|
|
if (old_subclasses.has(name)) {
|
|
subclass = old_subclasses[name];
|
|
} else {
|
|
subclass.instance();
|
|
}
|
|
|
|
Error err = _parse_class(subclass.ptr(), p_script, p_class->subclasses[i], p_keep_state);
|
|
if (err)
|
|
return err;
|
|
|
|
#ifdef TOOLS_ENABLED
|
|
|
|
p_script->member_lines[name] = p_class->subclasses[i]->line;
|
|
#endif
|
|
|
|
p_script->constants.insert(name, subclass); //once parsed, goes to the list of constants
|
|
p_script->subclasses.insert(name, subclass);
|
|
}
|
|
|
|
//parse methods
|
|
|
|
bool has_initializer = false;
|
|
bool has_ready = false;
|
|
|
|
for (int i = 0; i < p_class->functions.size(); i++) {
|
|
|
|
if (!has_initializer && p_class->functions[i]->name == "_init")
|
|
has_initializer = true;
|
|
if (!has_ready && p_class->functions[i]->name == "_ready")
|
|
has_ready = true;
|
|
Error err = _parse_function(p_script, p_class, p_class->functions[i]);
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
//parse static methods
|
|
|
|
for (int i = 0; i < p_class->static_functions.size(); i++) {
|
|
|
|
Error err = _parse_function(p_script, p_class, p_class->static_functions[i]);
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
if (!has_initializer) {
|
|
//create a constructor
|
|
Error err = _parse_function(p_script, p_class, NULL);
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
if (!has_ready && p_class->ready->statements.size()) {
|
|
//create a constructor
|
|
Error err = _parse_function(p_script, p_class, NULL, true);
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
#ifdef DEBUG_ENABLED
|
|
//validate setters/getters if debug is enabled
|
|
for (int i = 0; i < p_class->variables.size(); i++) {
|
|
|
|
if (p_class->variables[i].setter) {
|
|
const Map<StringName, GDScriptFunction *>::Element *E = p_script->get_member_functions().find(p_class->variables[i].setter);
|
|
if (!E) {
|
|
_set_error("Setter function '" + String(p_class->variables[i].setter) + "' not found in class.", NULL);
|
|
err_line = p_class->variables[i].line;
|
|
err_column = 0;
|
|
return ERR_PARSE_ERROR;
|
|
}
|
|
|
|
if (E->get()->is_static()) {
|
|
|
|
_set_error("Setter function '" + String(p_class->variables[i].setter) + "' is static.", NULL);
|
|
err_line = p_class->variables[i].line;
|
|
err_column = 0;
|
|
return ERR_PARSE_ERROR;
|
|
}
|
|
}
|
|
if (p_class->variables[i].getter) {
|
|
const Map<StringName, GDScriptFunction *>::Element *E = p_script->get_member_functions().find(p_class->variables[i].getter);
|
|
if (!E) {
|
|
_set_error("Getter function '" + String(p_class->variables[i].getter) + "' not found in class.", NULL);
|
|
err_line = p_class->variables[i].line;
|
|
err_column = 0;
|
|
return ERR_PARSE_ERROR;
|
|
}
|
|
|
|
if (E->get()->is_static()) {
|
|
|
|
_set_error("Getter function '" + String(p_class->variables[i].getter) + "' is static.", NULL);
|
|
err_line = p_class->variables[i].line;
|
|
err_column = 0;
|
|
return ERR_PARSE_ERROR;
|
|
}
|
|
}
|
|
}
|
|
|
|
//validate instances if keeping state
|
|
|
|
if (p_keep_state) {
|
|
|
|
print_line("RELOAD KEEP " + p_script->path);
|
|
for (Set<Object *>::Element *E = p_script->instances.front(); E;) {
|
|
|
|
Set<Object *>::Element *N = E->next();
|
|
|
|
ScriptInstance *si = E->get()->get_script_instance();
|
|
if (si->is_placeholder()) {
|
|
#ifdef TOOLS_ENABLED
|
|
PlaceHolderScriptInstance *psi = static_cast<PlaceHolderScriptInstance *>(si);
|
|
|
|
if (p_script->is_tool()) {
|
|
//re-create as an instance
|
|
p_script->placeholders.erase(psi); //remove placeholder
|
|
|
|
GDScriptInstance *instance = memnew(GDScriptInstance);
|
|
instance->base_ref = Object::cast_to<Reference>(E->get());
|
|
instance->members.resize(p_script->member_indices.size());
|
|
instance->script = Ref<GDScript>(p_script);
|
|
instance->owner = E->get();
|
|
|
|
//needed for hot reloading
|
|
for (Map<StringName, GDScript::MemberInfo>::Element *E = p_script->member_indices.front(); E; E = E->next()) {
|
|
instance->member_indices_cache[E->key()] = E->get().index;
|
|
}
|
|
instance->owner->set_script_instance(instance);
|
|
|
|
/* STEP 2, INITIALIZE AND CONSRTUCT */
|
|
|
|
Variant::CallError ce;
|
|
p_script->initializer->call(instance, NULL, 0, ce);
|
|
|
|
if (ce.error != Variant::CallError::CALL_OK) {
|
|
//well, tough luck, not goinna do anything here
|
|
}
|
|
}
|
|
#endif
|
|
} else {
|
|
|
|
GDScriptInstance *gi = static_cast<GDScriptInstance *>(si);
|
|
gi->reload_members();
|
|
}
|
|
|
|
E = N;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
p_script->valid = true;
|
|
return OK;
|
|
}
|
|
|
|
Error GDScriptCompiler::compile(const GDScriptParser *p_parser, GDScript *p_script, bool p_keep_state) {
|
|
|
|
err_line = -1;
|
|
err_column = -1;
|
|
error = "";
|
|
parser = p_parser;
|
|
const GDScriptParser::Node *root = parser->get_parse_tree();
|
|
ERR_FAIL_COND_V(root->type != GDScriptParser::Node::TYPE_CLASS, ERR_INVALID_DATA);
|
|
|
|
source = p_script->get_path();
|
|
|
|
Error err = _parse_class(p_script, NULL, static_cast<const GDScriptParser::ClassNode *>(root), p_keep_state);
|
|
|
|
if (err)
|
|
return err;
|
|
|
|
return OK;
|
|
}
|
|
|
|
String GDScriptCompiler::get_error() const {
|
|
|
|
return error;
|
|
}
|
|
int GDScriptCompiler::get_error_line() const {
|
|
|
|
return err_line;
|
|
}
|
|
int GDScriptCompiler::get_error_column() const {
|
|
|
|
return err_column;
|
|
}
|
|
|
|
GDScriptCompiler::GDScriptCompiler() {
|
|
}
|