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Diffstat (limited to 'modules/gdscript/gdscript_byte_codegen.cpp')
| -rw-r--r-- | modules/gdscript/gdscript_byte_codegen.cpp | 736 |
1 files changed, 736 insertions, 0 deletions
diff --git a/modules/gdscript/gdscript_byte_codegen.cpp b/modules/gdscript/gdscript_byte_codegen.cpp new file mode 100644 index 0000000000..8f0ce99de6 --- /dev/null +++ b/modules/gdscript/gdscript_byte_codegen.cpp @@ -0,0 +1,736 @@ +/*************************************************************************/ +/* gdscript_byte_codegen.cpp */ +/*************************************************************************/ +/* This file is part of: */ +/* GODOT ENGINE */ +/* https://godotengine.org */ +/*************************************************************************/ +/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */ +/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md). */ +/* */ +/* Permission is hereby granted, free of charge, to any person obtaining */ +/* a copy of this software and associated documentation files (the */ +/* "Software"), to deal in the Software without restriction, including */ +/* without limitation the rights to use, copy, modify, merge, publish, */ +/* distribute, sublicense, and/or sell copies of the Software, and to */ +/* permit persons to whom the Software is furnished to do so, subject to */ +/* the following conditions: */ +/* */ +/* The above copyright notice and this permission notice shall be */ +/* included in all copies or substantial portions of the Software. */ +/* */ +/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */ +/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */ +/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/ +/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */ +/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */ +/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */ +/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ +/*************************************************************************/ + +#include "gdscript_byte_codegen.h" + +#include "core/debugger/engine_debugger.h" +#include "gdscript.h" + +uint32_t GDScriptByteCodeGenerator::add_parameter(const StringName &p_name, bool p_is_optional, const GDScriptDataType &p_type) { +#ifdef TOOLS_ENABLED + function->arg_names.push_back(p_name); +#endif + function->_argument_count++; + function->argument_types.push_back(p_type); + if (p_is_optional) { + if (function->_default_arg_count == 0) { + append(GDScriptFunction::OPCODE_JUMP_TO_DEF_ARGUMENT); + } + function->default_arguments.push_back(opcodes.size()); + function->_default_arg_count++; + } + + return add_local(p_name, p_type); +} + +uint32_t GDScriptByteCodeGenerator::add_local(const StringName &p_name, const GDScriptDataType &p_type) { + int stack_pos = increase_stack(); + add_stack_identifier(p_name, stack_pos); + return stack_pos; +} + +uint32_t GDScriptByteCodeGenerator::add_local_constant(const StringName &p_name, const Variant &p_constant) { + int index = add_or_get_constant(p_constant); + local_constants[p_name] = index; + return index; +} + +uint32_t GDScriptByteCodeGenerator::add_or_get_constant(const Variant &p_constant) { + if (constant_map.has(p_constant)) { + return constant_map[p_constant]; + } + int index = constant_map.size(); + constant_map[p_constant] = index; + return index; +} + +uint32_t GDScriptByteCodeGenerator::add_or_get_name(const StringName &p_name) { + return get_name_map_pos(p_name); +} + +uint32_t GDScriptByteCodeGenerator::add_temporary() { + current_temporaries++; + return increase_stack(); +} + +void GDScriptByteCodeGenerator::pop_temporary() { + current_stack_size--; + current_temporaries--; +} + +void GDScriptByteCodeGenerator::start_parameters() {} + +void GDScriptByteCodeGenerator::end_parameters() { + function->default_arguments.invert(); +} + +void GDScriptByteCodeGenerator::write_start(GDScript *p_script, const StringName &p_function_name, bool p_static, MultiplayerAPI::RPCMode p_rpc_mode, const GDScriptDataType &p_return_type) { + function = memnew(GDScriptFunction); + debug_stack = EngineDebugger::is_active(); + + function->name = p_function_name; + function->_script = p_script; + function->source = p_script->get_path(); + +#ifdef DEBUG_ENABLED + function->func_cname = (String(function->source) + " - " + String(p_function_name)).utf8(); + function->_func_cname = function->func_cname.get_data(); +#endif + + function->_static = p_static; + function->return_type = p_return_type; + function->rpc_mode = p_rpc_mode; + function->_argument_count = 0; +} + +GDScriptFunction *GDScriptByteCodeGenerator::write_end() { + append(GDScriptFunction::OPCODE_END); + + if (constant_map.size()) { + function->_constant_count = constant_map.size(); + function->constants.resize(constant_map.size()); + function->_constants_ptr = function->constants.ptrw(); + const Variant *K = nullptr; + while ((K = constant_map.next(K))) { + int idx = constant_map[*K]; + function->constants.write[idx] = *K; + } + } else { + function->_constants_ptr = nullptr; + function->_constant_count = 0; + } + + if (name_map.size()) { + function->global_names.resize(name_map.size()); + function->_global_names_ptr = &function->global_names[0]; + for (Map<StringName, int>::Element *E = name_map.front(); E; E = E->next()) { + function->global_names.write[E->get()] = E->key(); + } + function->_global_names_count = function->global_names.size(); + + } else { + function->_global_names_ptr = nullptr; + function->_global_names_count = 0; + } + + if (opcodes.size()) { + function->code = opcodes; + function->_code_ptr = &function->code[0]; + function->_code_size = opcodes.size(); + + } else { + function->_code_ptr = nullptr; + function->_code_size = 0; + } + + if (function->default_arguments.size()) { + function->_default_arg_count = function->default_arguments.size(); + function->_default_arg_ptr = &function->default_arguments[0]; + } else { + function->_default_arg_count = 0; + function->_default_arg_ptr = nullptr; + } + + if (debug_stack) { + function->stack_debug = stack_debug; + } + function->_stack_size = stack_max; + function->_call_size = call_max; + + ended = true; + return function; +} + +#ifdef DEBUG_ENABLED +void GDScriptByteCodeGenerator::set_signature(const String &p_signature) { + function->profile.signature = p_signature; +} +#endif + +void GDScriptByteCodeGenerator::set_initial_line(int p_line) { + function->_initial_line = p_line; +} + +void GDScriptByteCodeGenerator::write_operator(const Address &p_target, Variant::Operator p_operator, const Address &p_left_operand, const Address &p_right_operand) { + append(GDScriptFunction::OPCODE_OPERATOR); + append(p_operator); + append(p_left_operand); + append(p_right_operand); + append(p_target); +} + +void GDScriptByteCodeGenerator::write_type_test(const Address &p_target, const Address &p_source, const Address &p_type) { + append(GDScriptFunction::OPCODE_EXTENDS_TEST); + append(p_source); + append(p_type); + append(p_target); +} + +void GDScriptByteCodeGenerator::write_type_test_builtin(const Address &p_target, const Address &p_source, Variant::Type p_type) { + append(GDScriptFunction::OPCODE_IS_BUILTIN); + append(p_source); + append(p_type); + append(p_target); +} + +void GDScriptByteCodeGenerator::write_and_left_operand(const Address &p_left_operand) { + append(GDScriptFunction::OPCODE_JUMP_IF_NOT); + append(p_left_operand); + logic_op_jump_pos1.push_back(opcodes.size()); + append(0); // Jump target, will be patched. +} + +void GDScriptByteCodeGenerator::write_and_right_operand(const Address &p_right_operand) { + append(GDScriptFunction::OPCODE_JUMP_IF_NOT); + append(p_right_operand); + logic_op_jump_pos2.push_back(opcodes.size()); + append(0); // Jump target, will be patched. +} + +void GDScriptByteCodeGenerator::write_end_and(const Address &p_target) { + // If here means both operands are true. + append(GDScriptFunction::OPCODE_ASSIGN_TRUE); + append(p_target); + // Jump away from the fail condition. + append(GDScriptFunction::OPCODE_JUMP); + append(opcodes.size() + 3); + // Here it means one of operands is false. + patch_jump(logic_op_jump_pos1.back()->get()); + patch_jump(logic_op_jump_pos2.back()->get()); + logic_op_jump_pos1.pop_back(); + logic_op_jump_pos2.pop_back(); + append(GDScriptFunction::OPCODE_ASSIGN_FALSE); + append(p_target); +} + +void GDScriptByteCodeGenerator::write_or_left_operand(const Address &p_left_operand) { + append(GDScriptFunction::OPCODE_JUMP_IF); + append(p_left_operand); + logic_op_jump_pos1.push_back(opcodes.size()); + append(0); // Jump target, will be patched. +} + +void GDScriptByteCodeGenerator::write_or_right_operand(const Address &p_right_operand) { + append(GDScriptFunction::OPCODE_JUMP_IF); + append(p_right_operand); + logic_op_jump_pos2.push_back(opcodes.size()); + append(0); // Jump target, will be patched. +} + +void GDScriptByteCodeGenerator::write_end_or(const Address &p_target) { + // If here means both operands are false. + append(GDScriptFunction::OPCODE_ASSIGN_FALSE); + append(p_target); + // Jump away from the success condition. + append(GDScriptFunction::OPCODE_JUMP); + append(opcodes.size() + 3); + // Here it means one of operands is false. + patch_jump(logic_op_jump_pos1.back()->get()); + patch_jump(logic_op_jump_pos2.back()->get()); + logic_op_jump_pos1.pop_back(); + logic_op_jump_pos2.pop_back(); + append(GDScriptFunction::OPCODE_ASSIGN_TRUE); + append(p_target); +} + +void GDScriptByteCodeGenerator::write_start_ternary(const Address &p_target) { + ternary_result.push_back(p_target); +} + +void GDScriptByteCodeGenerator::write_ternary_condition(const Address &p_condition) { + append(GDScriptFunction::OPCODE_JUMP_IF_NOT); + append(p_condition); + ternary_jump_fail_pos.push_back(opcodes.size()); + append(0); // Jump target, will be patched. +} + +void GDScriptByteCodeGenerator::write_ternary_true_expr(const Address &p_expr) { + append(GDScriptFunction::OPCODE_ASSIGN); + append(ternary_result.back()->get()); + append(p_expr); + // Jump away from the false path. + append(GDScriptFunction::OPCODE_JUMP); + ternary_jump_skip_pos.push_back(opcodes.size()); + append(0); + // Fail must jump here. + patch_jump(ternary_jump_fail_pos.back()->get()); + ternary_jump_fail_pos.pop_back(); +} + +void GDScriptByteCodeGenerator::write_ternary_false_expr(const Address &p_expr) { + append(GDScriptFunction::OPCODE_ASSIGN); + append(ternary_result.back()->get()); + append(p_expr); +} + +void GDScriptByteCodeGenerator::write_end_ternary() { + patch_jump(ternary_jump_skip_pos.back()->get()); + ternary_jump_skip_pos.pop_back(); +} + +void GDScriptByteCodeGenerator::write_set(const Address &p_target, const Address &p_index, const Address &p_source) { + append(GDScriptFunction::OPCODE_SET); + append(p_target); + append(p_index); + append(p_source); +} + +void GDScriptByteCodeGenerator::write_get(const Address &p_target, const Address &p_index, const Address &p_source) { + append(GDScriptFunction::OPCODE_GET); + append(p_source); + append(p_index); + append(p_target); +} + +void GDScriptByteCodeGenerator::write_set_named(const Address &p_target, const StringName &p_name, const Address &p_source) { + append(GDScriptFunction::OPCODE_SET_NAMED); + append(p_target); + append(p_name); + append(p_source); +} + +void GDScriptByteCodeGenerator::write_get_named(const Address &p_target, const StringName &p_name, const Address &p_source) { + append(GDScriptFunction::OPCODE_GET_NAMED); + append(p_source); + append(p_name); + append(p_target); +} + +void GDScriptByteCodeGenerator::write_set_member(const Address &p_value, const StringName &p_name) { + append(GDScriptFunction::OPCODE_SET_MEMBER); + append(p_name); + append(p_value); +} + +void GDScriptByteCodeGenerator::write_get_member(const Address &p_target, const StringName &p_name) { + append(GDScriptFunction::OPCODE_GET_MEMBER); + append(p_name); + append(p_target); +} + +void GDScriptByteCodeGenerator::write_assign(const Address &p_target, const Address &p_source) { + if (p_target.type.has_type && !p_source.type.has_type) { + // Typed assignment. + switch (p_target.type.kind) { + case GDScriptDataType::BUILTIN: { + append(GDScriptFunction::OPCODE_ASSIGN_TYPED_BUILTIN); + append(p_target.type.builtin_type); + append(p_target); + append(p_source); + } break; + case GDScriptDataType::NATIVE: { + int class_idx = GDScriptLanguage::get_singleton()->get_global_map()[p_target.type.native_type]; + class_idx |= (GDScriptFunction::ADDR_TYPE_GLOBAL << GDScriptFunction::ADDR_BITS); + append(GDScriptFunction::OPCODE_ASSIGN_TYPED_NATIVE); + append(class_idx); + append(p_target); + append(p_source); + } break; + case GDScriptDataType::SCRIPT: + case GDScriptDataType::GDSCRIPT: { + Variant script = p_target.type.script_type; + int idx = get_constant_pos(script); + + append(GDScriptFunction::OPCODE_ASSIGN_TYPED_SCRIPT); + append(idx); + append(p_target); + append(p_source); + } break; + default: { + ERR_PRINT("Compiler bug: unresolved assign."); + + // Shouldn't get here, but fail-safe to a regular assignment + append(GDScriptFunction::OPCODE_ASSIGN); + append(p_target); + append(p_source); + } + } + } else { + if (p_target.type.kind == GDScriptDataType::BUILTIN && p_source.type.kind == GDScriptDataType::BUILTIN && p_target.type.builtin_type != p_source.type.builtin_type) { + // Need conversion.. + append(GDScriptFunction::OPCODE_ASSIGN_TYPED_BUILTIN); + append(p_target.type.builtin_type); + append(p_target); + append(p_source); + } else { + // Either untyped assignment or already type-checked by the parser + append(GDScriptFunction::OPCODE_ASSIGN); + append(p_target); + append(p_source); + } + } +} + +void GDScriptByteCodeGenerator::write_assign_true(const Address &p_target) { + append(GDScriptFunction::OPCODE_ASSIGN_TRUE); + append(p_target); +} + +void GDScriptByteCodeGenerator::write_assign_false(const Address &p_target) { + append(GDScriptFunction::OPCODE_ASSIGN_FALSE); + append(p_target); +} + +void GDScriptByteCodeGenerator::write_cast(const Address &p_target, const Address &p_source, const GDScriptDataType &p_type) { + switch (p_type.kind) { + case GDScriptDataType::BUILTIN: { + append(GDScriptFunction::OPCODE_CAST_TO_BUILTIN); + append(p_type.builtin_type); + } break; + case GDScriptDataType::NATIVE: { + int class_idx = GDScriptLanguage::get_singleton()->get_global_map()[p_type.native_type]; + class_idx |= (GDScriptFunction::ADDR_TYPE_GLOBAL << GDScriptFunction::ADDR_BITS); + append(GDScriptFunction::OPCODE_CAST_TO_NATIVE); + append(class_idx); + } break; + case GDScriptDataType::SCRIPT: + case GDScriptDataType::GDSCRIPT: { + Variant script = p_type.script_type; + int idx = get_constant_pos(script); + + append(GDScriptFunction::OPCODE_CAST_TO_SCRIPT); + append(idx); + } break; + default: { + return; + } + } + + append(p_source); + append(p_target); +} + +void GDScriptByteCodeGenerator::write_call(const Address &p_target, const Address &p_base, const StringName &p_function_name, const Vector<Address> &p_arguments) { + append(p_target.mode == Address::NIL ? GDScriptFunction::OPCODE_CALL : GDScriptFunction::OPCODE_CALL_RETURN); + append(p_arguments.size()); + append(p_base); + append(p_function_name); + for (int i = 0; i < p_arguments.size(); i++) { + append(p_arguments[i]); + } + append(p_target); + alloc_call(p_arguments.size()); +} + +void GDScriptByteCodeGenerator::write_super_call(const Address &p_target, const StringName &p_function_name, const Vector<Address> &p_arguments) { + append(GDScriptFunction::OPCODE_CALL_SELF_BASE); + append(p_function_name); + append(p_arguments.size()); + for (int i = 0; i < p_arguments.size(); i++) { + append(p_arguments[i]); + } + append(p_target); + alloc_call(p_arguments.size()); +} + +void GDScriptByteCodeGenerator::write_call_async(const Address &p_target, const Address &p_base, const StringName &p_function_name, const Vector<Address> &p_arguments) { + append(GDScriptFunction::OPCODE_CALL_ASYNC); + append(p_arguments.size()); + append(p_base); + append(p_function_name); + for (int i = 0; i < p_arguments.size(); i++) { + append(p_arguments[i]); + } + append(p_target); + alloc_call(p_arguments.size()); +} + +void GDScriptByteCodeGenerator::write_call_builtin(const Address &p_target, GDScriptFunctions::Function p_function, const Vector<Address> &p_arguments) { + append(GDScriptFunction::OPCODE_CALL_BUILT_IN); + append(p_function); + append(p_arguments.size()); + for (int i = 0; i < p_arguments.size(); i++) { + append(p_arguments[i]); + } + append(p_target); + alloc_call(p_arguments.size()); +} + +void GDScriptByteCodeGenerator::write_call_method_bind(const Address &p_target, const Address &p_base, const MethodBind *p_method, const Vector<Address> &p_arguments) { + append(p_target.mode == Address::NIL ? GDScriptFunction::OPCODE_CALL : GDScriptFunction::OPCODE_CALL_RETURN); + append(p_arguments.size()); + append(p_base); + append(p_method->get_name()); + for (int i = 0; i < p_arguments.size(); i++) { + append(p_arguments[i]); + } + append(p_target); + alloc_call(p_arguments.size()); +} + +void GDScriptByteCodeGenerator::write_call_ptrcall(const Address &p_target, const Address &p_base, const MethodBind *p_method, const Vector<Address> &p_arguments) { + append(p_target.mode == Address::NIL ? GDScriptFunction::OPCODE_CALL : GDScriptFunction::OPCODE_CALL_RETURN); + append(p_arguments.size()); + append(p_base); + append(p_method->get_name()); + for (int i = 0; i < p_arguments.size(); i++) { + append(p_arguments[i]); + } + append(p_target); + alloc_call(p_arguments.size()); +} + +void GDScriptByteCodeGenerator::write_call_self(const Address &p_target, const StringName &p_function_name, const Vector<Address> &p_arguments) { + append(p_target.mode == Address::NIL ? GDScriptFunction::OPCODE_CALL : GDScriptFunction::OPCODE_CALL_RETURN); + append(p_arguments.size()); + append(GDScriptFunction::ADDR_TYPE_SELF << GDScriptFunction::ADDR_BITS); + append(p_function_name); + for (int i = 0; i < p_arguments.size(); i++) { + append(p_arguments[i]); + } + append(p_target); + alloc_call(p_arguments.size()); +} + +void GDScriptByteCodeGenerator::write_call_script_function(const Address &p_target, const Address &p_base, const StringName &p_function_name, const Vector<Address> &p_arguments) { + append(p_target.mode == Address::NIL ? GDScriptFunction::OPCODE_CALL : GDScriptFunction::OPCODE_CALL_RETURN); + append(p_arguments.size()); + append(p_base); + append(p_function_name); + for (int i = 0; i < p_arguments.size(); i++) { + append(p_arguments[i]); + } + append(p_target); + alloc_call(p_arguments.size()); +} + +void GDScriptByteCodeGenerator::write_construct(const Address &p_target, Variant::Type p_type, const Vector<Address> &p_arguments) { + append(GDScriptFunction::OPCODE_CONSTRUCT); + append(p_type); + append(p_arguments.size()); + for (int i = 0; i < p_arguments.size(); i++) { + append(p_arguments[i]); + } + append(p_target); +} + +void GDScriptByteCodeGenerator::write_construct_array(const Address &p_target, const Vector<Address> &p_arguments) { + append(GDScriptFunction::OPCODE_CONSTRUCT_ARRAY); + append(p_arguments.size()); + for (int i = 0; i < p_arguments.size(); i++) { + append(p_arguments[i]); + } + append(p_target); +} + +void GDScriptByteCodeGenerator::write_construct_dictionary(const Address &p_target, const Vector<Address> &p_arguments) { + append(GDScriptFunction::OPCODE_CONSTRUCT_DICTIONARY); + append(p_arguments.size() / 2); // This is number of key-value pairs, so only half of actual arguments. + for (int i = 0; i < p_arguments.size(); i++) { + append(p_arguments[i]); + } + append(p_target); +} + +void GDScriptByteCodeGenerator::write_await(const Address &p_target, const Address &p_operand) { + append(GDScriptFunction::OPCODE_AWAIT); + append(p_operand); + append(GDScriptFunction::OPCODE_AWAIT_RESUME); + append(p_target); +} + +void GDScriptByteCodeGenerator::write_if(const Address &p_condition) { + append(GDScriptFunction::OPCODE_JUMP_IF_NOT); + append(p_condition); + if_jmp_addrs.push_back(opcodes.size()); + append(0); // Jump destination, will be patched. +} + +void GDScriptByteCodeGenerator::write_else() { + append(GDScriptFunction::OPCODE_JUMP); // Jump from true if block; + int else_jmp_addr = opcodes.size(); + append(0); // Jump destination, will be patched. + + patch_jump(if_jmp_addrs.back()->get()); + if_jmp_addrs.pop_back(); + if_jmp_addrs.push_back(else_jmp_addr); +} + +void GDScriptByteCodeGenerator::write_endif() { + patch_jump(if_jmp_addrs.back()->get()); + if_jmp_addrs.pop_back(); +} + +void GDScriptByteCodeGenerator::write_for(const Address &p_variable, const Address &p_list) { + int counter_pos = increase_stack() | (GDScriptFunction::ADDR_TYPE_STACK << GDScriptFunction::ADDR_BITS); + int container_pos = increase_stack() | (GDScriptFunction::ADDR_TYPE_STACK << GDScriptFunction::ADDR_BITS); + + current_breaks_to_patch.push_back(List<int>()); + + // Assign container. + append(GDScriptFunction::OPCODE_ASSIGN); + append(container_pos); + append(p_list); + + // Begin loop. + append(GDScriptFunction::OPCODE_ITERATE_BEGIN); + append(counter_pos); + append(container_pos); + for_jmp_addrs.push_back(opcodes.size()); + append(0); // End of loop address, will be patched. + append(p_variable); + append(GDScriptFunction::OPCODE_JUMP); + append(opcodes.size() + 6); // Skip over 'continue' code. + + // Next iteration. + int continue_addr = opcodes.size(); + continue_addrs.push_back(continue_addr); + append(GDScriptFunction::OPCODE_ITERATE); + append(counter_pos); + append(container_pos); + for_jmp_addrs.push_back(opcodes.size()); + append(0); // Jump destination, will be patched. + append(p_variable); +} + +void GDScriptByteCodeGenerator::write_endfor() { + // Jump back to loop check. + append(GDScriptFunction::OPCODE_JUMP); + append(continue_addrs.back()->get()); + continue_addrs.pop_back(); + + // Patch end jumps (two of them). + for (int i = 0; i < 2; i++) { + patch_jump(for_jmp_addrs.back()->get()); + for_jmp_addrs.pop_back(); + } + + // Patch break statements. + for (const List<int>::Element *E = current_breaks_to_patch.back()->get().front(); E; E = E->next()) { + patch_jump(E->get()); + } + current_breaks_to_patch.pop_back(); + + current_stack_size -= 2; // Remove loop temporaries. +} + +void GDScriptByteCodeGenerator::start_while_condition() { + current_breaks_to_patch.push_back(List<int>()); + continue_addrs.push_back(opcodes.size()); +} + +void GDScriptByteCodeGenerator::write_while(const Address &p_condition) { + // Condition check. + append(GDScriptFunction::OPCODE_JUMP_IF_NOT); + append(p_condition); + while_jmp_addrs.push_back(opcodes.size()); + append(0); // End of loop address, will be patched. +} + +void GDScriptByteCodeGenerator::write_endwhile() { + // Jump back to loop check. + append(GDScriptFunction::OPCODE_JUMP); + append(continue_addrs.back()->get()); + continue_addrs.pop_back(); + + // Patch end jump. + patch_jump(while_jmp_addrs.back()->get()); + while_jmp_addrs.pop_back(); + + // Patch break statements. + for (const List<int>::Element *E = current_breaks_to_patch.back()->get().front(); E; E = E->next()) { + patch_jump(E->get()); + } + current_breaks_to_patch.pop_back(); +} + +void GDScriptByteCodeGenerator::start_match() { + match_continues_to_patch.push_back(List<int>()); +} + +void GDScriptByteCodeGenerator::start_match_branch() { + // Patch continue statements. + for (const List<int>::Element *E = match_continues_to_patch.back()->get().front(); E; E = E->next()) { + patch_jump(E->get()); + } + match_continues_to_patch.pop_back(); + // Start a new list for next branch. + match_continues_to_patch.push_back(List<int>()); +} + +void GDScriptByteCodeGenerator::end_match() { + // Patch continue statements. + for (const List<int>::Element *E = match_continues_to_patch.back()->get().front(); E; E = E->next()) { + patch_jump(E->get()); + } + match_continues_to_patch.pop_back(); +} + +void GDScriptByteCodeGenerator::write_break() { + append(GDScriptFunction::OPCODE_JUMP); + current_breaks_to_patch.back()->get().push_back(opcodes.size()); + append(0); +} + +void GDScriptByteCodeGenerator::write_continue() { + append(GDScriptFunction::OPCODE_JUMP); + append(continue_addrs.back()->get()); +} + +void GDScriptByteCodeGenerator::write_continue_match() { + append(GDScriptFunction::OPCODE_JUMP); + match_continues_to_patch.back()->get().push_back(opcodes.size()); + append(0); +} + +void GDScriptByteCodeGenerator::write_breakpoint() { + append(GDScriptFunction::OPCODE_BREAKPOINT); +} + +void GDScriptByteCodeGenerator::write_newline(int p_line) { + append(GDScriptFunction::OPCODE_LINE); + append(p_line); + current_line = p_line; +} + +void GDScriptByteCodeGenerator::write_return(const Address &p_return_value) { + append(GDScriptFunction::OPCODE_RETURN); + append(p_return_value); +} + +void GDScriptByteCodeGenerator::write_assert(const Address &p_test, const Address &p_message) { + append(GDScriptFunction::OPCODE_ASSERT); + append(p_test); + append(p_message); +} + +void GDScriptByteCodeGenerator::start_block() { + push_stack_identifiers(); +} + +void GDScriptByteCodeGenerator::end_block() { + pop_stack_identifiers(); +} + +GDScriptByteCodeGenerator::~GDScriptByteCodeGenerator() { + if (!ended && function != nullptr) { + memdelete(function); + } +} |