godot/modules/gdscript/gdscript_disassembler.cpp
2020-11-21 13:30:17 -03:00

814 lines
22 KiB
C++

/*************************************************************************/
/* gdscript_disassembler.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. */
/*************************************************************************/
#ifdef DEBUG_ENABLED
#include "gdscript_function.h"
#include "core/string/string_builder.h"
#include "gdscript.h"
#include "gdscript_functions.h"
static String _get_variant_string(const Variant &p_variant) {
String txt;
if (p_variant.get_type() == Variant::STRING) {
txt = "\"" + String(p_variant) + "\"";
} else if (p_variant.get_type() == Variant::STRING_NAME) {
txt = "&\"" + String(p_variant) + "\"";
} else if (p_variant.get_type() == Variant::NODE_PATH) {
txt = "^\"" + String(p_variant) + "\"";
} else if (p_variant.get_type() == Variant::OBJECT) {
Object *obj = p_variant;
if (!obj) {
txt = "null";
} else {
GDScriptNativeClass *cls = Object::cast_to<GDScriptNativeClass>(obj);
if (cls) {
txt += cls->get_name();
txt += " (class)";
} else {
txt = obj->get_class();
if (obj->get_script_instance()) {
txt += "(" + obj->get_script_instance()->get_script()->get_path() + ")";
}
}
}
} else {
txt = p_variant;
}
return txt;
}
static String _disassemble_address(const GDScript *p_script, const GDScriptFunction &p_function, int p_address) {
int addr = p_address & GDScriptFunction::ADDR_MASK;
switch (p_address >> GDScriptFunction::ADDR_BITS) {
case GDScriptFunction::ADDR_TYPE_SELF: {
return "self";
} break;
case GDScriptFunction::ADDR_TYPE_CLASS: {
return "class";
} break;
case GDScriptFunction::ADDR_TYPE_MEMBER: {
return "member(" + p_script->debug_get_member_by_index(addr) + ")";
} break;
case GDScriptFunction::ADDR_TYPE_CLASS_CONSTANT: {
return "class_const(" + p_function.get_global_name(addr) + ")";
} break;
case GDScriptFunction::ADDR_TYPE_LOCAL_CONSTANT: {
return "const(" + _get_variant_string(p_function.get_constant(addr)) + ")";
} break;
case GDScriptFunction::ADDR_TYPE_STACK: {
return "stack(" + itos(addr) + ")";
} break;
case GDScriptFunction::ADDR_TYPE_STACK_VARIABLE: {
return "var_stack(" + itos(addr) + ")";
} break;
case GDScriptFunction::ADDR_TYPE_GLOBAL: {
return "global(" + _get_variant_string(GDScriptLanguage::get_singleton()->get_global_array()[addr]) + ")";
} break;
case GDScriptFunction::ADDR_TYPE_NAMED_GLOBAL: {
return "named_global(" + p_function.get_global_name(addr) + ")";
} break;
case GDScriptFunction::ADDR_TYPE_NIL: {
return "nil";
} break;
}
return "<err>";
}
void GDScriptFunction::disassemble(const Vector<String> &p_code_lines) const {
#define DADDR(m_ip) (_disassemble_address(_script, *this, _code_ptr[ip + m_ip]))
for (int ip = 0; ip < _code_size;) {
StringBuilder text;
int incr = 0;
text += " ";
text += itos(ip);
text += ": ";
// This makes the compiler complain if some opcode is unchecked in the switch.
Opcode code = Opcode(_code_ptr[ip] & INSTR_MASK);
int instr_var_args = (_code_ptr[ip] & INSTR_ARGS_MASK) >> INSTR_BITS;
switch (code) {
case OPCODE_OPERATOR: {
int operation = _code_ptr[ip + 4];
text += "operator ";
text += DADDR(3);
text += " = ";
text += DADDR(1);
text += " ";
text += Variant::get_operator_name(Variant::Operator(operation));
text += " ";
text += DADDR(2);
incr += 5;
} break;
case OPCODE_OPERATOR_VALIDATED: {
text += "validated operator ";
text += DADDR(3);
text += " = ";
text += DADDR(1);
text += " <operator function> ";
text += DADDR(2);
incr += 5;
} break;
case OPCODE_EXTENDS_TEST: {
text += "is object ";
text += DADDR(3);
text += " = ";
text += DADDR(1);
text += " is ";
text += DADDR(2);
incr += 4;
} break;
case OPCODE_IS_BUILTIN: {
text += "is builtin ";
text += DADDR(2);
text += " = ";
text += DADDR(1);
text += " is ";
text += Variant::get_type_name(Variant::Type(_code_ptr[ip + 3]));
incr += 4;
} break;
case OPCODE_SET_KEYED: {
text += "set keyed ";
text += DADDR(1);
text += "[";
text += DADDR(2);
text += "] = ";
text += DADDR(3);
incr += 4;
} break;
case OPCODE_SET_KEYED_VALIDATED: {
text += "set keyed validated ";
text += DADDR(1);
text += "[";
text += DADDR(2);
text += "] = ";
text += DADDR(3);
incr += 5;
} break;
case OPCODE_SET_INDEXED_VALIDATED: {
text += "set indexed validated ";
text += DADDR(1);
text += "[";
text += DADDR(2);
text += "] = ";
text += DADDR(3);
incr += 5;
} break;
case OPCODE_GET_KEYED: {
text += "get keyed ";
text += DADDR(3);
text += " = ";
text += DADDR(1);
text += "[";
text += DADDR(2);
text += "]";
incr += 4;
} break;
case OPCODE_GET_KEYED_VALIDATED: {
text += "get keyed validated ";
text += DADDR(3);
text += " = ";
text += DADDR(1);
text += "[";
text += DADDR(2);
text += "]";
incr += 5;
} break;
case OPCODE_GET_INDEXED_VALIDATED: {
text += "get indexed validated ";
text += DADDR(3);
text += " = ";
text += DADDR(1);
text += "[";
text += DADDR(2);
text += "]";
incr += 5;
} break;
case OPCODE_SET_NAMED: {
text += "set_named ";
text += DADDR(1);
text += "[\"";
text += _global_names_ptr[_code_ptr[ip + 3]];
text += "\"] = ";
text += DADDR(2);
incr += 4;
} break;
case OPCODE_SET_NAMED_VALIDATED: {
text += "set_named validated ";
text += DADDR(1);
text += "[\"";
text += "<unknown name>";
text += "\"] = ";
text += DADDR(2);
incr += 4;
} break;
case OPCODE_GET_NAMED: {
text += "get_named ";
text += DADDR(2);
text += " = ";
text += DADDR(1);
text += "[\"";
text += _global_names_ptr[_code_ptr[ip + 3]];
text += "\"]";
incr += 4;
} break;
case OPCODE_GET_NAMED_VALIDATED: {
text += "get_named validated ";
text += DADDR(2);
text += " = ";
text += DADDR(1);
text += "[\"";
text += "<unknown name>";
text += "\"]";
incr += 4;
} break;
case OPCODE_SET_MEMBER: {
text += "set_member ";
text += "[\"";
text += _global_names_ptr[_code_ptr[ip + 2]];
text += "\"] = ";
text += DADDR(1);
incr += 3;
} break;
case OPCODE_GET_MEMBER: {
text += "get_member ";
text += DADDR(1);
text += " = ";
text += "[\"";
text += _global_names_ptr[_code_ptr[ip + 2]];
text += "\"]";
incr += 3;
} break;
case OPCODE_ASSIGN: {
text += "assign ";
text += DADDR(1);
text += " = ";
text += DADDR(2);
incr += 3;
} break;
case OPCODE_ASSIGN_TRUE: {
text += "assign ";
text += DADDR(1);
text += " = true";
incr += 2;
} break;
case OPCODE_ASSIGN_FALSE: {
text += "assign ";
text += DADDR(1);
text += " = false";
incr += 2;
} break;
case OPCODE_ASSIGN_TYPED_BUILTIN: {
text += "assign typed builtin (";
text += Variant::get_type_name((Variant::Type)_code_ptr[ip + 3]);
text += ") ";
text += DADDR(1);
text += " = ";
text += DADDR(2);
incr += 4;
} break;
case OPCODE_ASSIGN_TYPED_NATIVE: {
Variant class_name = _constants_ptr[_code_ptr[ip + 3]];
GDScriptNativeClass *nc = Object::cast_to<GDScriptNativeClass>(class_name.operator Object *());
text += "assign typed native (";
text += nc->get_name().operator String();
text += ") ";
text += DADDR(1);
text += " = ";
text += DADDR(2);
incr += 4;
} break;
case OPCODE_ASSIGN_TYPED_SCRIPT: {
Variant script = _constants_ptr[_code_ptr[ip + 3]];
Script *sc = Object::cast_to<Script>(script.operator Object *());
text += "assign typed script (";
text += sc->get_path();
text += ") ";
text += DADDR(1);
text += " = ";
text += DADDR(2);
incr += 4;
} break;
case OPCODE_CAST_TO_BUILTIN: {
text += "cast builtin ";
text += DADDR(2);
text += " = ";
text += DADDR(1);
text += " as ";
text += Variant::get_type_name(Variant::Type(_code_ptr[ip + 1]));
incr += 4;
} break;
case OPCODE_CAST_TO_NATIVE: {
Variant class_name = _constants_ptr[_code_ptr[ip + 1]];
GDScriptNativeClass *nc = Object::cast_to<GDScriptNativeClass>(class_name.operator Object *());
text += "cast native ";
text += DADDR(2);
text += " = ";
text += DADDR(1);
text += " as ";
text += nc->get_name();
incr += 4;
} break;
case OPCODE_CAST_TO_SCRIPT: {
text += "cast ";
text += DADDR(2);
text += " = ";
text += DADDR(1);
text += " as ";
text += DADDR(3);
incr += 4;
} break;
case OPCODE_CONSTRUCT: {
Variant::Type t = Variant::Type(_code_ptr[ip + 3 + instr_var_args]);
int argc = _code_ptr[ip + 1 + instr_var_args];
text += "construct ";
text += DADDR(1 + argc);
text += " = ";
text += Variant::get_type_name(t) + "(";
for (int i = 0; i < argc; i++) {
if (i > 0)
text += ", ";
text += DADDR(i + 1);
}
text += ")";
incr = 3 + instr_var_args;
} break;
case OPCODE_CONSTRUCT_VALIDATED: {
int argc = _code_ptr[ip + 1 + instr_var_args];
text += "construct validated ";
text += DADDR(1 + argc);
text += " = ";
text += "<unkown type>(";
for (int i = 0; i < argc; i++) {
if (i > 0)
text += ", ";
text += DADDR(i + 1);
}
text += ")";
incr = 3 + instr_var_args;
} break;
case OPCODE_CONSTRUCT_ARRAY: {
int argc = _code_ptr[ip + 1 + instr_var_args];
text += " make_array ";
text += DADDR(1 + argc);
text += " = [";
for (int i = 0; i < argc; i++) {
if (i > 0)
text += ", ";
text += DADDR(1 + i);
}
text += "]";
incr += 3 + argc;
} break;
case OPCODE_CONSTRUCT_DICTIONARY: {
int argc = _code_ptr[ip + 1 + instr_var_args];
text += "make_dict ";
text += DADDR(1 + argc * 2);
text += " = {";
for (int i = 0; i < argc; i++) {
if (i > 0)
text += ", ";
text += DADDR(1 + i * 2 + 0);
text += ": ";
text += DADDR(1 + i * 2 + 1);
}
text += "}";
incr += 3 + argc * 2;
} break;
case OPCODE_CALL:
case OPCODE_CALL_RETURN:
case OPCODE_CALL_ASYNC: {
bool ret = (_code_ptr[ip] & INSTR_MASK) == OPCODE_CALL_RETURN;
bool async = (_code_ptr[ip] & INSTR_MASK) == OPCODE_CALL_ASYNC;
if (ret) {
text += "call-ret ";
} else if (async) {
text += "call-async ";
} else {
text += "call ";
}
int argc = _code_ptr[ip + 1 + instr_var_args];
if (ret || async) {
text += DADDR(2 + argc) + " = ";
}
text += DADDR(1 + argc) + ".";
text += String(_global_names_ptr[_code_ptr[ip + 2 + instr_var_args]]);
text += "(";
for (int i = 0; i < argc; i++) {
if (i > 0)
text += ", ";
text += DADDR(1 + i);
}
text += ")";
incr = 5 + argc;
} break;
case OPCODE_CALL_METHOD_BIND:
case OPCODE_CALL_METHOD_BIND_RET: {
bool ret = (_code_ptr[ip] & INSTR_MASK) == OPCODE_CALL_METHOD_BIND_RET;
if (ret) {
text += "call-method_bind-ret ";
} else {
text += "call-method_bind ";
}
MethodBind *method = _methods_ptr[_code_ptr[ip + 2 + instr_var_args]];
int argc = _code_ptr[ip + 1 + instr_var_args];
if (ret) {
text += DADDR(2 + argc) + " = ";
}
text += DADDR(1 + argc) + ".";
text += method->get_name();
text += "(";
for (int i = 0; i < argc; i++) {
if (i > 0)
text += ", ";
text += DADDR(1 + i);
}
text += ")";
incr = 5 + argc;
} break;
case OPCODE_CALL_PTRCALL_NO_RETURN: {
text += "call-ptrcall (no return) ";
MethodBind *method = _methods_ptr[_code_ptr[ip + 2 + instr_var_args]];
int argc = _code_ptr[ip + 1 + instr_var_args];
text += DADDR(1 + argc) + ".";
text += method->get_name();
text += "(";
for (int i = 0; i < argc; i++) {
if (i > 0)
text += ", ";
text += DADDR(1 + i);
}
text += ")";
incr = 5 + argc;
} break;
#define DISASSEMBLE_PTRCALL(m_type) \
case OPCODE_CALL_PTRCALL_##m_type: { \
text += "call-ptrcall (return "; \
text += #m_type; \
text += ") "; \
MethodBind *method = _methods_ptr[_code_ptr[ip + 2 + instr_var_args]]; \
int argc = _code_ptr[ip + 1 + instr_var_args]; \
text += DADDR(2 + argc) + " = "; \
text += DADDR(1 + argc) + "."; \
text += method->get_name(); \
text += "("; \
for (int i = 0; i < argc; i++) { \
if (i > 0) \
text += ", "; \
text += DADDR(1 + i); \
} \
text += ")"; \
incr = 5 + argc; \
} break
DISASSEMBLE_PTRCALL(BOOL);
DISASSEMBLE_PTRCALL(INT);
DISASSEMBLE_PTRCALL(FLOAT);
DISASSEMBLE_PTRCALL(STRING);
DISASSEMBLE_PTRCALL(VECTOR2);
DISASSEMBLE_PTRCALL(VECTOR2I);
DISASSEMBLE_PTRCALL(RECT2);
DISASSEMBLE_PTRCALL(RECT2I);
DISASSEMBLE_PTRCALL(VECTOR3);
DISASSEMBLE_PTRCALL(VECTOR3I);
DISASSEMBLE_PTRCALL(TRANSFORM2D);
DISASSEMBLE_PTRCALL(PLANE);
DISASSEMBLE_PTRCALL(AABB);
DISASSEMBLE_PTRCALL(BASIS);
DISASSEMBLE_PTRCALL(TRANSFORM);
DISASSEMBLE_PTRCALL(COLOR);
DISASSEMBLE_PTRCALL(STRING_NAME);
DISASSEMBLE_PTRCALL(NODE_PATH);
DISASSEMBLE_PTRCALL(RID);
DISASSEMBLE_PTRCALL(QUAT);
DISASSEMBLE_PTRCALL(OBJECT);
DISASSEMBLE_PTRCALL(CALLABLE);
DISASSEMBLE_PTRCALL(SIGNAL);
DISASSEMBLE_PTRCALL(DICTIONARY);
DISASSEMBLE_PTRCALL(ARRAY);
DISASSEMBLE_PTRCALL(PACKED_BYTE_ARRAY);
DISASSEMBLE_PTRCALL(PACKED_INT32_ARRAY);
DISASSEMBLE_PTRCALL(PACKED_INT64_ARRAY);
DISASSEMBLE_PTRCALL(PACKED_FLOAT32_ARRAY);
DISASSEMBLE_PTRCALL(PACKED_FLOAT64_ARRAY);
DISASSEMBLE_PTRCALL(PACKED_STRING_ARRAY);
DISASSEMBLE_PTRCALL(PACKED_VECTOR2_ARRAY);
DISASSEMBLE_PTRCALL(PACKED_VECTOR3_ARRAY);
DISASSEMBLE_PTRCALL(PACKED_COLOR_ARRAY);
case OPCODE_CALL_BUILTIN_TYPE_VALIDATED: {
int argc = _code_ptr[ip + 1 + instr_var_args];
text += "call-builtin-method validated ";
text += DADDR(2 + argc) + " = ";
text += DADDR(1) + ".";
text += "<unknown method>";
text += "(";
for (int i = 0; i < argc; i++) {
if (i > 0)
text += ", ";
text += DADDR(1 + i);
}
text += ")";
incr = 5 + argc;
} break;
case OPCODE_CALL_BUILT_IN: {
text += "call-built-in ";
int argc = _code_ptr[ip + 1 + instr_var_args];
text += DADDR(1 + argc) + " = ";
text += GDScriptFunctions::get_func_name(GDScriptFunctions::Function(_code_ptr[ip + 2 + instr_var_args]));
text += "(";
for (int i = 0; i < argc; i++) {
if (i > 0)
text += ", ";
text += DADDR(1 + i);
}
text += ")";
incr = 4 + argc;
} break;
case OPCODE_CALL_SELF_BASE: {
text += "call-self-base ";
int argc = _code_ptr[ip + 1 + instr_var_args];
text += DADDR(2 + argc) + " = ";
text += _global_names_ptr[_code_ptr[ip + 2 + instr_var_args]];
text += "(";
for (int i = 0; i < argc; i++) {
if (i > 0)
text += ", ";
text += DADDR(1 + i);
}
text += ")";
incr = 4 + argc;
} break;
case OPCODE_AWAIT: {
text += "await ";
text += DADDR(1);
incr += 2;
} break;
case OPCODE_AWAIT_RESUME: {
text += "await resume ";
text += DADDR(1);
incr = 2;
} break;
case OPCODE_JUMP: {
text += "jump ";
text += itos(_code_ptr[ip + 1]);
incr = 2;
} break;
case OPCODE_JUMP_IF: {
text += "jump-if ";
text += DADDR(1);
text += " to ";
text += itos(_code_ptr[ip + 2]);
incr = 3;
} break;
case OPCODE_JUMP_IF_NOT: {
text += "jump-if-not ";
text += DADDR(1);
text += " to ";
text += itos(_code_ptr[ip + 2]);
incr = 3;
} break;
case OPCODE_JUMP_TO_DEF_ARGUMENT: {
text += "jump-to-default-argument ";
incr = 1;
} break;
case OPCODE_RETURN: {
text += "return ";
text += DADDR(1);
incr = 2;
} break;
#define DISASSEMBLE_ITERATE(m_type) \
case OPCODE_ITERATE_##m_type: { \
text += "for-loop (typed "; \
text += #m_type; \
text += ") "; \
text += DADDR(3); \
text += " in "; \
text += DADDR(2); \
text += " counter "; \
text += DADDR(1); \
text += " end "; \
text += itos(_code_ptr[ip + 4]); \
incr += 5; \
} break
#define DISASSEMBLE_ITERATE_BEGIN(m_type) \
case OPCODE_ITERATE_BEGIN_##m_type: { \
text += "for-init (typed "; \
text += #m_type; \
text += ") "; \
text += DADDR(3); \
text += " in "; \
text += DADDR(2); \
text += " counter "; \
text += DADDR(1); \
text += " end "; \
text += itos(_code_ptr[ip + 4]); \
incr += 5; \
} break
#define DISASSEMBLE_ITERATE_TYPES(m_macro) \
m_macro(INT); \
m_macro(FLOAT); \
m_macro(VECTOR2); \
m_macro(VECTOR2I); \
m_macro(VECTOR3); \
m_macro(VECTOR3I); \
m_macro(STRING); \
m_macro(DICTIONARY); \
m_macro(ARRAY); \
m_macro(PACKED_BYTE_ARRAY); \
m_macro(PACKED_INT32_ARRAY); \
m_macro(PACKED_INT64_ARRAY); \
m_macro(PACKED_FLOAT32_ARRAY); \
m_macro(PACKED_FLOAT64_ARRAY); \
m_macro(PACKED_STRING_ARRAY); \
m_macro(PACKED_VECTOR2_ARRAY); \
m_macro(PACKED_VECTOR3_ARRAY); \
m_macro(PACKED_COLOR_ARRAY); \
m_macro(OBJECT)
case OPCODE_ITERATE_BEGIN: {
text += "for-init ";
text += DADDR(3);
text += " in ";
text += DADDR(2);
text += " counter ";
text += DADDR(1);
text += " end ";
text += itos(_code_ptr[ip + 4]);
incr += 5;
} break;
DISASSEMBLE_ITERATE_TYPES(DISASSEMBLE_ITERATE_BEGIN);
case OPCODE_ITERATE: {
text += "for-loop ";
text += DADDR(2);
text += " in ";
text += DADDR(2);
text += " counter ";
text += DADDR(1);
text += " end ";
text += itos(_code_ptr[ip + 4]);
incr += 5;
} break;
DISASSEMBLE_ITERATE_TYPES(DISASSEMBLE_ITERATE);
case OPCODE_LINE: {
int line = _code_ptr[ip + 1] - 1;
if (line >= 0 && line < p_code_lines.size()) {
text += "line ";
text += itos(line + 1);
text += ": ";
text += p_code_lines[line];
} else {
text += "";
}
incr += 2;
} break;
case OPCODE_ASSERT: {
text += "assert (";
text += DADDR(1);
text += ", ";
text += DADDR(2);
text += ")";
incr += 3;
} break;
case OPCODE_BREAKPOINT: {
text += "breakpoint";
incr += 1;
} break;
case OPCODE_END: {
text += "== END ==";
incr += 1;
} break;
}
ip += incr;
if (text.get_string_length() > 0) {
print_line(text.as_string());
}
}
}
#endif