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ScriptClassData.cpp
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191 lines (170 loc) · 4.93 KB
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#include "ScriptClassData.h"
#include <algorithm>
#include <stdexcept>
ScriptClassData::ScriptClassData()
{
size = 0;
vftable = nullptr;
}
ScriptClassData::ScriptClassData(const std::string& name, size_t s, bool dynamic)
{
class_name = name;
size = s;
if (dynamic)
AddVirtualFunctionTable();
}
ScriptClassData::~ScriptClassData()
{
}
void ScriptClassData::SetParent(const std::shared_ptr<ScriptClassData>& ptr)
{
parent = ptr;
size = parent->size;
}
void ScriptClassData::AddVirtualFunctionTable()
{
if (GetMember("_vfptr") == ScriptVariableData())
{
ScriptTypeData type;
type.type = ST_VOID;
type.indirection = 2;
AddMember("_vfptr", type, 0);
}
}
void ScriptClassData::AddMember(const std::string& name, const ScriptTypeData& type)
{
ScriptVariableData member_data;
member_data.type = type;
member_data.target.lvalue = false; // shouldn't really matter, should it?
member_data.target.offset = size;
member_data.target.mode = 0b01;
if (member_data.target.offset > 127)
member_data.target.mode = 0b10;
member_data.target.regm = 0b011; // rbx
members.insert(std::make_pair(name, member_data));
size_t member_size = type.GetSize();
size += member_size;
if (size % 8 != 0)
size += 8 - size % 8;
}
void ScriptClassData::AddMember(const std::string & name, const ScriptTypeData & type, int32_t offset)
{
ScriptVariableData member_data;
member_data.type = type;
member_data.target.lvalue = false; // shouldn't really matter, should it?
member_data.target.offset = offset;
member_data.target.mode = 0b01;
if (member_data.target.offset > 127)
member_data.target.mode = 0b10;
member_data.target.regm = 0b011; // rbx
members.insert(std::make_pair(name, member_data));
size_t member_size = type.GetSize();
size = std::max(size, offset + member_size);
if (size % 8 != 0)
size += 8 - size % 8;
}
void ScriptClassData::AddFunction(const std::string& name, const ScriptFunctionPrototype& prototype, void * pointer)
{
functions.insert(std::make_pair(class_name + "::" + name, std::make_pair(prototype, pointer)));
}
void ScriptClassData::AddVirtualFunction(const std::string& name, const ScriptFunctionPrototype& prototype)
{
if (GetMember("_vfptr") == ScriptVariableData())
throw std::runtime_error("Only dynamic classes may have virtual functions.");
ScriptVirtualFunctionData func;
func.name = name;
func.offset = GetVirtualFunctionCount() * 8;
func.prototype = prototype;
virtual_functions.push_back(func);
}
ScriptVariableData ScriptClassData::GetMember(const std::string& name) const
{
for (auto& member : members)
{
if (member.first.compare(name) == 0)
{
return member.second;
}
}
if (parent)
return parent->GetMember(name);
return ScriptVariableData();
}
void ScriptClassData::GetMemberList(std::vector<ScriptVariableData>& list) const
{
list.reserve(list.size() + members.size());
for (auto kv : members)
list.push_back(kv.second);
if (parent)
parent->GetMemberList(list);
}
void * ScriptClassData::GetFunctionFinalAddress(const std::string& name, const ScriptFunctionPrototype& prototype) const
{
for (auto& func : functions)
{
// fully qualified function name
if (func.first.compare(name) == 0 && func.second.first == prototype)
{
return func.second.second;
}
}
for (auto& func : functions)
{
if (func.first.compare(class_name + "::" + name) == 0 && func.second.first == prototype)
{
return func.second.second;
}
}
if (parent)
return parent->GetFunctionFinalAddress(name, prototype);
return nullptr;
}
std::optional<ScriptFunctionPrototype> ScriptClassData::GetFunctionFullPrototype(const std::string& name, const ScriptFunctionPrototype& prototype) const
{
for (auto& func : functions)
{
// fully qualified function name
if (func.first.compare(name) == 0 && func.second.first.params == prototype.params)
{
return func.second.first;
}
}
for (auto& func : functions)
{
if (func.first.compare(class_name + "::" + name) == 0 && func.second.first.params == prototype.params)
{
return func.second.first;
}
}
if (parent)
return parent->GetFunctionFullPrototype(name, prototype);
return std::optional<ScriptFunctionPrototype>();
}
off_t ScriptClassData::GetVirtualFunctionIndex(const std::string& name, const ScriptFunctionPrototype& prototype) const
{
for (size_t i = 0; i < virtual_functions.size(); i++)
{
auto& func = virtual_functions[i];
if (func.name.compare(name) == 0 && func.prototype == prototype)
{
if (parent)
return i + parent->GetVirtualFunctionCount();
return i;
}
}
if (parent)
return parent->GetVirtualFunctionIndex(name, prototype);
return -1;
}
void ScriptClassData::GetVirtualFunctionList(std::vector<ScriptVirtualFunctionData>& list) const
{
if (parent)
parent->GetVirtualFunctionList(list);
list.insert(list.end(), virtual_functions.begin(), virtual_functions.end());
}
size_t ScriptClassData::GetVirtualFunctionCount() const
{
if (parent)
return virtual_functions.size() + parent->GetVirtualFunctionCount();
return virtual_functions.size();
}