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|
/**************************************************************************/
/* gdscript_byte_codegen.h */
/**************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/**************************************************************************/
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
/* */
/* 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. */
/**************************************************************************/
#ifndef GDSCRIPT_BYTE_CODEGEN_H
#define GDSCRIPT_BYTE_CODEGEN_H
#include "gdscript_codegen.h"
#include "gdscript_function.h"
#include "gdscript_utility_functions.h"
class GDScriptByteCodeGenerator : public GDScriptCodeGenerator {
struct StackSlot {
Variant::Type type = Variant::NIL;
bool can_contain_object = true;
Vector<int> bytecode_indices;
StackSlot() = default;
StackSlot(Variant::Type p_type, bool p_can_contain_object) :
type(p_type), can_contain_object(p_can_contain_object) {}
};
struct CallTarget {
Address target;
bool is_new_temporary = false;
GDScriptByteCodeGenerator *codegen = nullptr;
#ifdef DEV_ENABLED
bool cleaned = false;
#endif
void cleanup() {
DEV_ASSERT(!cleaned);
if (is_new_temporary) {
codegen->pop_temporary();
}
#ifdef DEV_ENABLED
cleaned = true;
#endif
}
CallTarget(Address p_target, bool p_is_new_temporary, GDScriptByteCodeGenerator *p_codegen) :
target(p_target),
is_new_temporary(p_is_new_temporary),
codegen(p_codegen) {}
~CallTarget() { DEV_ASSERT(cleaned); }
CallTarget(const CallTarget &) = delete;
CallTarget &operator=(CallTarget &) = delete;
};
bool ended = false;
GDScriptFunction *function = nullptr;
bool debug_stack = false;
Vector<int> opcodes;
List<RBMap<StringName, int>> stack_id_stack;
RBMap<StringName, int> stack_identifiers;
List<int> stack_identifiers_counts;
RBMap<StringName, int> local_constants;
Vector<StackSlot> locals;
HashSet<int> dirty_locals;
Vector<StackSlot> temporaries;
List<int> used_temporaries;
HashSet<int> temporaries_pending_clear;
RBMap<Variant::Type, List<int>> temporaries_pool;
List<GDScriptFunction::StackDebug> stack_debug;
List<RBMap<StringName, int>> block_identifier_stack;
RBMap<StringName, int> block_identifiers;
int max_locals = 0;
int current_line = 0;
int instr_args_max = 0;
#ifdef DEBUG_ENABLED
List<int> temp_stack;
#endif
HashMap<Variant, int, VariantHasher, VariantComparator> constant_map;
RBMap<StringName, int> name_map;
#ifdef TOOLS_ENABLED
Vector<StringName> named_globals;
#endif
RBMap<Variant::ValidatedOperatorEvaluator, int> operator_func_map;
RBMap<Variant::ValidatedSetter, int> setters_map;
RBMap<Variant::ValidatedGetter, int> getters_map;
RBMap<Variant::ValidatedKeyedSetter, int> keyed_setters_map;
RBMap<Variant::ValidatedKeyedGetter, int> keyed_getters_map;
RBMap<Variant::ValidatedIndexedSetter, int> indexed_setters_map;
RBMap<Variant::ValidatedIndexedGetter, int> indexed_getters_map;
RBMap<Variant::ValidatedBuiltInMethod, int> builtin_method_map;
RBMap<Variant::ValidatedConstructor, int> constructors_map;
RBMap<Variant::ValidatedUtilityFunction, int> utilities_map;
RBMap<GDScriptUtilityFunctions::FunctionPtr, int> gds_utilities_map;
RBMap<MethodBind *, int> method_bind_map;
RBMap<GDScriptFunction *, int> lambdas_map;
#ifdef DEBUG_ENABLED
// Keep method and property names for pointer and validated operations.
// Used when disassembling the bytecode.
Vector<String> operator_names;
Vector<String> setter_names;
Vector<String> getter_names;
Vector<String> builtin_methods_names;
Vector<String> constructors_names;
Vector<String> utilities_names;
Vector<String> gds_utilities_names;
void add_debug_name(Vector<String> &vector, int index, const String &name) {
if (index >= vector.size()) {
vector.resize(index + 1);
}
vector.write[index] = name;
}
#endif
// Lists since these can be nested.
List<int> if_jmp_addrs;
List<int> for_jmp_addrs;
List<Address> for_counter_variables;
List<Address> for_container_variables;
List<int> while_jmp_addrs;
List<int> continue_addrs;
// Used to patch jumps with `and` and `or` operators with short-circuit.
List<int> logic_op_jump_pos1;
List<int> logic_op_jump_pos2;
List<Address> ternary_result;
List<int> ternary_jump_fail_pos;
List<int> ternary_jump_skip_pos;
List<List<int>> current_breaks_to_patch;
void add_stack_identifier(const StringName &p_id, int p_stackpos) {
if (locals.size() > max_locals) {
max_locals = locals.size();
}
stack_identifiers[p_id] = p_stackpos;
if (debug_stack) {
block_identifiers[p_id] = p_stackpos;
GDScriptFunction::StackDebug sd;
sd.added = true;
sd.line = current_line;
sd.identifier = p_id;
sd.pos = p_stackpos;
stack_debug.push_back(sd);
}
}
void push_stack_identifiers() {
stack_identifiers_counts.push_back(locals.size());
stack_id_stack.push_back(stack_identifiers);
if (debug_stack) {
RBMap<StringName, int> block_ids(block_identifiers);
block_identifier_stack.push_back(block_ids);
block_identifiers.clear();
}
}
void pop_stack_identifiers() {
int current_locals = stack_identifiers_counts.back()->get();
stack_identifiers_counts.pop_back();
stack_identifiers = stack_id_stack.back()->get();
stack_id_stack.pop_back();
#ifdef DEBUG_ENABLED
if (!used_temporaries.is_empty()) {
ERR_PRINT("Leaving block with non-zero temporary variables: " + itos(used_temporaries.size()));
}
#endif
for (int i = current_locals; i < locals.size(); i++) {
dirty_locals.insert(i + GDScriptFunction::FIXED_ADDRESSES_MAX);
}
locals.resize(current_locals);
if (debug_stack) {
for (const KeyValue<StringName, int> &E : block_identifiers) {
GDScriptFunction::StackDebug sd;
sd.added = false;
sd.identifier = E.key;
sd.line = current_line;
sd.pos = E.value;
stack_debug.push_back(sd);
}
block_identifiers = block_identifier_stack.back()->get();
block_identifier_stack.pop_back();
}
}
int get_name_map_pos(const StringName &p_identifier) {
int ret;
if (!name_map.has(p_identifier)) {
ret = name_map.size();
name_map[p_identifier] = ret;
} else {
ret = name_map[p_identifier];
}
return ret;
}
int get_constant_pos(const Variant &p_constant) {
if (constant_map.has(p_constant)) {
return constant_map[p_constant];
}
int pos = constant_map.size();
constant_map[p_constant] = pos;
return pos;
}
int get_operation_pos(const Variant::ValidatedOperatorEvaluator p_operation) {
if (operator_func_map.has(p_operation)) {
return operator_func_map[p_operation];
}
int pos = operator_func_map.size();
operator_func_map[p_operation] = pos;
return pos;
}
int get_setter_pos(const Variant::ValidatedSetter p_setter) {
if (setters_map.has(p_setter)) {
return setters_map[p_setter];
}
int pos = setters_map.size();
setters_map[p_setter] = pos;
return pos;
}
int get_getter_pos(const Variant::ValidatedGetter p_getter) {
if (getters_map.has(p_getter)) {
return getters_map[p_getter];
}
int pos = getters_map.size();
getters_map[p_getter] = pos;
return pos;
}
int get_keyed_setter_pos(const Variant::ValidatedKeyedSetter p_keyed_setter) {
if (keyed_setters_map.has(p_keyed_setter)) {
return keyed_setters_map[p_keyed_setter];
}
int pos = keyed_setters_map.size();
keyed_setters_map[p_keyed_setter] = pos;
return pos;
}
int get_keyed_getter_pos(const Variant::ValidatedKeyedGetter p_keyed_getter) {
if (keyed_getters_map.has(p_keyed_getter)) {
return keyed_getters_map[p_keyed_getter];
}
int pos = keyed_getters_map.size();
keyed_getters_map[p_keyed_getter] = pos;
return pos;
}
int get_indexed_setter_pos(const Variant::ValidatedIndexedSetter p_indexed_setter) {
if (indexed_setters_map.has(p_indexed_setter)) {
return indexed_setters_map[p_indexed_setter];
}
int pos = indexed_setters_map.size();
indexed_setters_map[p_indexed_setter] = pos;
return pos;
}
int get_indexed_getter_pos(const Variant::ValidatedIndexedGetter p_indexed_getter) {
if (indexed_getters_map.has(p_indexed_getter)) {
return indexed_getters_map[p_indexed_getter];
}
int pos = indexed_getters_map.size();
indexed_getters_map[p_indexed_getter] = pos;
return pos;
}
int get_builtin_method_pos(const Variant::ValidatedBuiltInMethod p_method) {
if (builtin_method_map.has(p_method)) {
return builtin_method_map[p_method];
}
int pos = builtin_method_map.size();
builtin_method_map[p_method] = pos;
return pos;
}
int get_constructor_pos(const Variant::ValidatedConstructor p_constructor) {
if (constructors_map.has(p_constructor)) {
return constructors_map[p_constructor];
}
int pos = constructors_map.size();
constructors_map[p_constructor] = pos;
return pos;
}
int get_utility_pos(const Variant::ValidatedUtilityFunction p_utility) {
if (utilities_map.has(p_utility)) {
return utilities_map[p_utility];
}
int pos = utilities_map.size();
utilities_map[p_utility] = pos;
return pos;
}
int get_gds_utility_pos(const GDScriptUtilityFunctions::FunctionPtr p_gds_utility) {
if (gds_utilities_map.has(p_gds_utility)) {
return gds_utilities_map[p_gds_utility];
}
int pos = gds_utilities_map.size();
gds_utilities_map[p_gds_utility] = pos;
return pos;
}
int get_method_bind_pos(MethodBind *p_method) {
if (method_bind_map.has(p_method)) {
return method_bind_map[p_method];
}
int pos = method_bind_map.size();
method_bind_map[p_method] = pos;
return pos;
}
int get_lambda_function_pos(GDScriptFunction *p_lambda_function) {
if (lambdas_map.has(p_lambda_function)) {
return lambdas_map[p_lambda_function];
}
int pos = lambdas_map.size();
lambdas_map[p_lambda_function] = pos;
return pos;
}
CallTarget get_call_target(const Address &p_target, Variant::Type p_type = Variant::NIL);
int address_of(const Address &p_address) {
switch (p_address.mode) {
case Address::SELF:
return GDScriptFunction::ADDR_SELF;
case Address::CLASS:
return GDScriptFunction::ADDR_CLASS;
case Address::MEMBER:
return p_address.address | (GDScriptFunction::ADDR_TYPE_MEMBER << GDScriptFunction::ADDR_BITS);
case Address::CONSTANT:
return p_address.address | (GDScriptFunction::ADDR_TYPE_CONSTANT << GDScriptFunction::ADDR_BITS);
case Address::LOCAL_VARIABLE:
case Address::FUNCTION_PARAMETER:
return p_address.address | (GDScriptFunction::ADDR_TYPE_STACK << GDScriptFunction::ADDR_BITS);
case Address::TEMPORARY:
temporaries.write[p_address.address].bytecode_indices.push_back(opcodes.size());
return -1;
case Address::NIL:
return GDScriptFunction::ADDR_NIL;
}
return -1; // Unreachable.
}
void append_opcode(GDScriptFunction::Opcode p_code) {
opcodes.push_back(p_code);
}
void append_opcode_and_argcount(GDScriptFunction::Opcode p_code, int p_argument_count) {
opcodes.push_back(p_code);
opcodes.push_back(p_argument_count);
instr_args_max = MAX(instr_args_max, p_argument_count);
}
void append(int p_code) {
opcodes.push_back(p_code);
}
void append(const Address &p_address) {
opcodes.push_back(address_of(p_address));
}
void append(const StringName &p_name) {
opcodes.push_back(get_name_map_pos(p_name));
}
void append(const Variant::ValidatedOperatorEvaluator p_operation) {
opcodes.push_back(get_operation_pos(p_operation));
}
void append(const Variant::ValidatedSetter p_setter) {
opcodes.push_back(get_setter_pos(p_setter));
}
void append(const Variant::ValidatedGetter p_getter) {
opcodes.push_back(get_getter_pos(p_getter));
}
void append(const Variant::ValidatedKeyedSetter p_keyed_setter) {
opcodes.push_back(get_keyed_setter_pos(p_keyed_setter));
}
void append(const Variant::ValidatedKeyedGetter p_keyed_getter) {
opcodes.push_back(get_keyed_getter_pos(p_keyed_getter));
}
void append(const Variant::ValidatedIndexedSetter p_indexed_setter) {
opcodes.push_back(get_indexed_setter_pos(p_indexed_setter));
}
void append(const Variant::ValidatedIndexedGetter p_indexed_getter) {
opcodes.push_back(get_indexed_getter_pos(p_indexed_getter));
}
void append(const Variant::ValidatedBuiltInMethod p_method) {
opcodes.push_back(get_builtin_method_pos(p_method));
}
void append(const Variant::ValidatedConstructor p_constructor) {
opcodes.push_back(get_constructor_pos(p_constructor));
}
void append(const Variant::ValidatedUtilityFunction p_utility) {
opcodes.push_back(get_utility_pos(p_utility));
}
void append(const GDScriptUtilityFunctions::FunctionPtr p_gds_utility) {
opcodes.push_back(get_gds_utility_pos(p_gds_utility));
}
void append(MethodBind *p_method) {
opcodes.push_back(get_method_bind_pos(p_method));
}
void append(GDScriptFunction *p_lambda_function) {
opcodes.push_back(get_lambda_function_pos(p_lambda_function));
}
void patch_jump(int p_address) {
opcodes.write[p_address] = opcodes.size();
}
public:
virtual uint32_t add_parameter(const StringName &p_name, bool p_is_optional, const GDScriptDataType &p_type) override;
virtual uint32_t add_local(const StringName &p_name, const GDScriptDataType &p_type) override;
virtual uint32_t add_local_constant(const StringName &p_name, const Variant &p_constant) override;
virtual uint32_t add_or_get_constant(const Variant &p_constant) override;
virtual uint32_t add_or_get_name(const StringName &p_name) override;
virtual uint32_t add_temporary(const GDScriptDataType &p_type) override;
virtual void pop_temporary() override;
virtual void clear_temporaries() override;
virtual void clear_address(const Address &p_address) override;
virtual bool is_local_dirty(const Address &p_address) const override;
virtual void start_parameters() override;
virtual void end_parameters() override;
virtual void start_block() override;
virtual void end_block() override;
virtual void write_start(GDScript *p_script, const StringName &p_function_name, bool p_static, Variant p_rpc_config, const GDScriptDataType &p_return_type) override;
virtual GDScriptFunction *write_end() override;
#ifdef DEBUG_ENABLED
virtual void set_signature(const String &p_signature) override;
#endif
virtual void set_initial_line(int p_line) override;
virtual void write_type_adjust(const Address &p_target, Variant::Type p_new_type) override;
virtual void write_unary_operator(const Address &p_target, Variant::Operator p_operator, const Address &p_left_operand) override;
virtual void write_binary_operator(const Address &p_target, Variant::Operator p_operator, const Address &p_left_operand, const Address &p_right_operand) override;
virtual void write_type_test(const Address &p_target, const Address &p_source, const GDScriptDataType &p_type) override;
virtual void write_and_left_operand(const Address &p_left_operand) override;
virtual void write_and_right_operand(const Address &p_right_operand) override;
virtual void write_end_and(const Address &p_target) override;
virtual void write_or_left_operand(const Address &p_left_operand) override;
virtual void write_or_right_operand(const Address &p_right_operand) override;
virtual void write_end_or(const Address &p_target) override;
virtual void write_start_ternary(const Address &p_target) override;
virtual void write_ternary_condition(const Address &p_condition) override;
virtual void write_ternary_true_expr(const Address &p_expr) override;
virtual void write_ternary_false_expr(const Address &p_expr) override;
virtual void write_end_ternary() override;
virtual void write_set(const Address &p_target, const Address &p_index, const Address &p_source) override;
virtual void write_get(const Address &p_target, const Address &p_index, const Address &p_source) override;
virtual void write_set_named(const Address &p_target, const StringName &p_name, const Address &p_source) override;
virtual void write_get_named(const Address &p_target, const StringName &p_name, const Address &p_source) override;
virtual void write_set_member(const Address &p_value, const StringName &p_name) override;
virtual void write_get_member(const Address &p_target, const StringName &p_name) override;
virtual void write_set_static_variable(const Address &p_value, const Address &p_class, int p_index) override;
virtual void write_get_static_variable(const Address &p_target, const Address &p_class, int p_index) override;
virtual void write_assign(const Address &p_target, const Address &p_source) override;
virtual void write_assign_with_conversion(const Address &p_target, const Address &p_source) override;
virtual void write_assign_null(const Address &p_target) override;
virtual void write_assign_true(const Address &p_target) override;
virtual void write_assign_false(const Address &p_target) override;
virtual void write_assign_default_parameter(const Address &p_dst, const Address &p_src, bool p_use_conversion) override;
virtual void write_store_global(const Address &p_dst, int p_global_index) override;
virtual void write_store_named_global(const Address &p_dst, const StringName &p_global) override;
virtual void write_cast(const Address &p_target, const Address &p_source, const GDScriptDataType &p_type) override;
virtual void write_call(const Address &p_target, const Address &p_base, const StringName &p_function_name, const Vector<Address> &p_arguments) override;
virtual void write_super_call(const Address &p_target, const StringName &p_function_name, const Vector<Address> &p_arguments) override;
virtual void write_call_async(const Address &p_target, const Address &p_base, const StringName &p_function_name, const Vector<Address> &p_arguments) override;
virtual void write_call_utility(const Address &p_target, const StringName &p_function, const Vector<Address> &p_arguments) override;
void write_call_builtin_type(const Address &p_target, const Address &p_base, Variant::Type p_type, const StringName &p_method, bool p_is_static, const Vector<Address> &p_arguments);
virtual void write_call_gdscript_utility(const Address &p_target, const StringName &p_function, const Vector<Address> &p_arguments) override;
virtual void write_call_builtin_type(const Address &p_target, const Address &p_base, Variant::Type p_type, const StringName &p_method, const Vector<Address> &p_arguments) override;
virtual void write_call_builtin_type_static(const Address &p_target, Variant::Type p_type, const StringName &p_method, const Vector<Address> &p_arguments) override;
virtual void write_call_native_static(const Address &p_target, const StringName &p_class, const StringName &p_method, const Vector<Address> &p_arguments) override;
virtual void write_call_native_static_validated(const Address &p_target, MethodBind *p_method, const Vector<Address> &p_arguments) override;
virtual void write_call_method_bind(const Address &p_target, const Address &p_base, MethodBind *p_method, const Vector<Address> &p_arguments) override;
virtual void write_call_method_bind_validated(const Address &p_target, const Address &p_base, MethodBind *p_method, const Vector<Address> &p_arguments) override;
virtual void write_call_self(const Address &p_target, const StringName &p_function_name, const Vector<Address> &p_arguments) override;
virtual void write_call_self_async(const Address &p_target, const StringName &p_function_name, const Vector<Address> &p_arguments) override;
virtual void write_call_script_function(const Address &p_target, const Address &p_base, const StringName &p_function_name, const Vector<Address> &p_arguments) override;
virtual void write_lambda(const Address &p_target, GDScriptFunction *p_function, const Vector<Address> &p_captures, bool p_use_self) override;
virtual void write_construct(const Address &p_target, Variant::Type p_type, const Vector<Address> &p_arguments) override;
virtual void write_construct_array(const Address &p_target, const Vector<Address> &p_arguments) override;
virtual void write_construct_typed_array(const Address &p_target, const GDScriptDataType &p_element_type, const Vector<Address> &p_arguments) override;
virtual void write_construct_dictionary(const Address &p_target, const Vector<Address> &p_arguments) override;
virtual void write_construct_typed_dictionary(const Address &p_target, const GDScriptDataType &p_key_type, const GDScriptDataType &p_value_type, const Vector<Address> &p_arguments) override;
virtual void write_await(const Address &p_target, const Address &p_operand) override;
virtual void write_if(const Address &p_condition) override;
virtual void write_else() override;
virtual void write_endif() override;
virtual void write_jump_if_shared(const Address &p_value) override;
virtual void write_end_jump_if_shared() override;
virtual void start_for(const GDScriptDataType &p_iterator_type, const GDScriptDataType &p_list_type) override;
virtual void write_for_assignment(const Address &p_list) override;
virtual void write_for(const Address &p_variable, bool p_use_conversion) override;
virtual void write_endfor() override;
virtual void start_while_condition() override;
virtual void write_while(const Address &p_condition) override;
virtual void write_endwhile() override;
virtual void write_break() override;
virtual void write_continue() override;
virtual void write_breakpoint() override;
virtual void write_newline(int p_line) override;
virtual void write_return(const Address &p_return_value) override;
virtual void write_assert(const Address &p_test, const Address &p_message) override;
virtual ~GDScriptByteCodeGenerator();
};
#endif // GDSCRIPT_BYTE_CODEGEN_H
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