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Object.cpp
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Object.cpp
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#include "Object.h"
#include "Interpreter.h"
#include "Parser.h"
#include "Table.h"
#include "Value.h"
Value* Object::has_property([[maybe_unused]] Interpreter& interp, const ImmutableString& name)
{
Value* ret;
if (ret = properties.lazy_at(name); ret != nullptr)
return ret;
return base_properties->lazy_at(name);
}
Value Object::get_property(Interpreter& interp, const ImmutableString& name)
{
Value* ptr;
if (ptr = properties.lazy_at(name); ptr != nullptr)
return *ptr;
if (ptr = base_properties->lazy_at(name); ptr != nullptr)
return *ptr;
interp.RuntimeError(nullptr, ErrorCode::BadMemberAccess, "Unable to access property of object!");
return Value();
}
Value Object::get_property_raw(const ImmutableString& name)
{
Value* ptr;
if (ptr = properties.lazy_at(name); ptr != nullptr)
return *ptr;
if (ptr = base_properties->lazy_at(name); ptr != nullptr)
return *ptr;
return Value();
}
void Object::set_property(Interpreter& interp, const ImmutableString& name, Value rhs)
{
if (base_properties->count(name) == 0)
{
interp.RuntimeError(nullptr, ErrorCode::BadMemberAccess, "Unable to access property of object!");
return;
}
properties[name] = rhs;
}
void Object::set_property_raw(const ImmutableString& name, Value rhs)
{
if (base_properties->count(name) == 0)
return;
properties[name] = rhs;
}
Value Object::call_method(Interpreter& interp, const ImmutableString& name, std::vector<Value> &args)
{
Function* fuh;
if (base_funcs->count(name)) // Note how it checks the typical methods before trying to invoke any metamethods.
{
fuh = base_funcs->at(name);
}
else if (mt && mt->metamethods.contains(name))
{
fuh = (mt->metamethods.at(name));
}
else
{
interp.RuntimeError(nullptr, ErrorCode::BadMemberAccess, "Unable to access method of object: " + name.to_string());
return Value();
}
fuh->give_args(interp, args, this);
fuh->set_obj(this);
return fuh->resolve(interp);
}
//If it fails, it simply returns a nullptr w/o throwing a Runtime. Part of scope resolution of function calls.
Function* Object::has_method([[maybe_unused]] Interpreter& interp, const ImmutableString& name)
{
if (Function** ptr = base_funcs->lazy_at(name); ptr != nullptr)
{
return *ptr;
}
else if (mt && mt->metamethods.contains(name))
{
return mt->metamethods.at(name);
}
return nullptr;
}
/* Object Type */
Object* ObjectType::makeObject(Interpreter& interp, std::vector<Value>&& args)
{
Object* o;
if (is_table_type)
o = new Table(object_type, &typeproperties, &typefuncs);
else
o = new Object(object_type, &typeproperties, &typefuncs, mt);
if (typefuncs.count("#constructor"))
{
Function* fuh = typefuncs["#constructor"]; //fuh.
fuh->give_args(interp, args, o);
fuh->resolve(interp);
}
else if(mt)
{
NativeMethod** fuh = mt->metamethods.lazy_at("#constructor");
if(fuh)
{
(*fuh)->give_args(interp, args, o);
(*fuh)->resolve(interp);
}
o->mt = mt;
}
return o;
}
Value ObjectType::get_typeproperty(Interpreter& interp, const ImmutableString& str, ASTNode* getter)
{
if (!typeproperties.count(str))
{
interp.RuntimeError(getter, ErrorCode::BadMemberAccess, "Failed to access property " + str.to_string() + " of grandparent " + object_type.to_string() + "!");
return Value();
}
return typeproperties.at(str);
}
Function* ObjectType::has_typemethod([[maybe_unused]] Interpreter& interp, const ImmutableString& str,[[maybe_unused]] ASTNode* getter)
{
if (!typefuncs.count(str))
{
if (mt)
{
NativeMethod** native = mt->metamethods.lazy_at(str);
if (native)
return *native;
}
return nullptr;
}
return typefuncs.at(str);
}
void ObjectType::set_typeproperty(Parser& parse, const ImmutableString& name, const Value& v)
{
if (typeproperties.count(name))
{
parse.ParserError(nullptr, "Duplicate property of ObjectType detected!");
}
typeproperties[name] = v;
}
void ObjectType::set_typeproperty_raw(const ImmutableString& name, Value v)
{
typeproperties[name] = v;
}
void ObjectType::set_typemethod(Parser& parse, std::string name, Function* f)
{
if (typefuncs.count(name))
{
parse.ParserError(nullptr, "Duplicate method of ObjectType detected!");
}
typefuncs[name] = f;
}
void ObjectType::set_typemethod_raw(const ImmutableString& name, Function* f)
{
typefuncs[name] = f;
}
std::string Object::to_json() {
std::string jsonOutput = "{";
jsonOutput.reserve(512); // I hereby promote you to StringBuilder
jsonOutput += math::concat("\"__TYPE__\":\"",object_type.data,"\"");
if(this->is_table()) {
const Table* self = static_cast<const Table*>(this);
jsonOutput += ",\"__TABLE__\":[[";
//first the array
if(!self->t_array.empty()) {
for(const Value& v : self->t_array) {
jsonOutput += v.to_json() + ",";
}
jsonOutput.pop_back(); // No trailing commas! :^)
}
jsonOutput += "],{";
//second, the hashtable portion
if(!self->t_hash.empty()) {
for(auto it = self->t_hash.begin(); it != self->t_hash.end(); ++it) {
//Mindlessly using a Value as a JSON member key may seem suspicious
//(since JSON member keys can *only* be strings)
//however, João tables may only have integers and strings as keys. This should be okay!
jsonOutput += math::concat("\"",it.key().to_string(),"\":",it.value().to_json(),",");
}
jsonOutput.pop_back(); // Delete the trailing comma :^)
}
jsonOutput += "}]";
}
for(auto it = base_properties->begin(); it != base_properties->end(); ++it) {
//Comma is placed at the front to avoid having a trailing comma.
//(we'll always need this first comma since the TYPE element always comes before this)
jsonOutput += math::concat(",\"",it.key().data,"\":",get_property_raw(it.key()).to_json());
}
jsonOutput += "}";
return jsonOutput;
}