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mirror of https://github.com/godotengine/godot.git synced 2024-12-21 10:25:24 +08:00
godot/modules/gdscript/gdscript_byte_codegen.cpp
George Marques 5ddfc657ab
Merge pull request from ThakeeNathees/for-loop-stack-overriden-fix
GDScript: for loop override stack variable bug fix
2020-10-19 20:21:14 -03:00

740 lines
24 KiB
C++

/*************************************************************************/
/* 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);
alloc_call(p_arguments.size());
}
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 = add_temporary() | (GDScriptFunction::ADDR_TYPE_STACK << GDScriptFunction::ADDR_BITS);
int container_pos = add_temporary() | (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();
// Remove loop temporaries.
pop_temporary();
pop_temporary();
}
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);
}
}