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/*
* Copyright (c) 2020, Itamar S. <itamar8910@gmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include "VariablesModel.h"
#include <LibGUI/Application.h>
#include <LibGUI/MessageBox.h>
namespace HackStudio {
GUI::ModelIndex VariablesModel::index(int row, int column, const GUI::ModelIndex& parent_index) const
{
if (!parent_index.is_valid())
return create_index(row, column, &m_variables[row]);
auto* parent = static_cast<const Debug::DebugInfo::VariableInfo*>(parent_index.internal_data());
auto* child = &parent->members[row];
return create_index(row, column, child);
}
GUI::ModelIndex VariablesModel::parent_index(const GUI::ModelIndex& index) const
{
if (!index.is_valid())
return {};
auto* child = static_cast<const Debug::DebugInfo::VariableInfo*>(index.internal_data());
auto* parent = child->parent;
if (parent == nullptr)
return {};
if (parent->parent == nullptr) {
for (size_t row = 0; row < m_variables.size(); row++)
if (m_variables.ptr_at(row).ptr() == parent)
return create_index(row, 0, parent);
VERIFY_NOT_REACHED();
}
for (size_t row = 0; row < parent->parent->members.size(); row++) {
Debug::DebugInfo::VariableInfo* child_at_row = parent->parent->members.ptr_at(row).ptr();
if (child_at_row == parent)
return create_index(row, 0, parent);
}
VERIFY_NOT_REACHED();
}
int VariablesModel::row_count(const GUI::ModelIndex& index) const
{
if (!index.is_valid())
return m_variables.size();
auto* node = static_cast<const Debug::DebugInfo::VariableInfo*>(index.internal_data());
return node->members.size();
}
static String variable_value_as_string(const Debug::DebugInfo::VariableInfo& variable)
{
if (variable.location_type != Debug::DebugInfo::VariableInfo::LocationType::Address)
return "N/A";
auto variable_address = variable.location_data.address;
if (variable.is_enum_type()) {
auto value = Debugger::the().session()->peek((u32*)variable_address);
VERIFY(value.has_value());
auto it = variable.type->members.find_if([&enumerator_value = value.value()](const auto& enumerator) {
return enumerator->constant_data.as_u32 == enumerator_value;
});
if (it.is_end())
return String::formatted("Unknown ({})", value.value());
return String::formatted("{}::{}", variable.type_name, (*it)->name);
}
if (variable.type_name == "int") {
auto value = Debugger::the().session()->peek((u32*)variable_address);
VERIFY(value.has_value());
return String::formatted("{}", static_cast<int>(value.value()));
}
if (variable.type_name == "char") {
auto value = Debugger::the().session()->peek((u32*)variable_address);
VERIFY(value.has_value());
return String::formatted("'{0:c}'", (char)value.value());
}
if (variable.type_name == "bool") {
auto value = Debugger::the().session()->peek((u32*)variable_address);
VERIFY(value.has_value());
return (value.value() & 1) ? "true" : "false";
}
return String::formatted("type: {} @ {:p}, ", variable.type_name, variable_address);
}
static Optional<u32> string_to_variable_value(StringView string_value, const Debug::DebugInfo::VariableInfo& variable)
{
if (variable.is_enum_type()) {
auto prefix_string = String::formatted("{}::", variable.type_name);
auto string_to_use = string_value;
if (string_value.starts_with(prefix_string))
string_to_use = string_value.substring_view(prefix_string.length(), string_value.length() - prefix_string.length());
auto it = variable.type->members.find_if([string_to_use](const auto& enumerator) {
return enumerator->name == string_to_use;
});
if (it.is_end())
return {};
return (*it)->constant_data.as_u32;
}
if (variable.type_name == "int") {
auto value = string_value.to_int();
if (value.has_value())
return value.value();
return {};
}
if (variable.type_name == "bool") {
if (string_value == "true")
return true;
if (string_value == "false")
return false;
return {};
}
return {};
}
void VariablesModel::set_variable_value(const GUI::ModelIndex& index, StringView string_value, GUI::Window* parent_window)
{
auto variable = static_cast<const Debug::DebugInfo::VariableInfo*>(index.internal_data());
auto value = string_to_variable_value(string_value, *variable);
if (value.has_value()) {
auto success = Debugger::the().session()->poke((u32*)variable->location_data.address, value.value());
VERIFY(success);
return;
}
GUI::MessageBox::show(
parent_window,
String::formatted("String value \"{}\" could not be converted to a value of type {}.", string_value, variable->type_name),
"Set value failed",
GUI::MessageBox::Type::Error);
}
GUI::Variant VariablesModel::data(const GUI::ModelIndex& index, GUI::ModelRole role) const
{
auto* variable = static_cast<const Debug::DebugInfo::VariableInfo*>(index.internal_data());
switch (role) {
case GUI::ModelRole::Display: {
auto value_as_string = variable_value_as_string(*variable);
return String::formatted("{}: {}", variable->name, value_as_string);
}
case GUI::ModelRole::Icon:
return m_variable_icon;
default:
return {};
}
}
RefPtr<VariablesModel> VariablesModel::create(const PtraceRegisters& regs)
{
auto lib = Debugger::the().session()->library_at(regs.ip());
if (!lib)
return nullptr;
auto variables = lib->debug_info->get_variables_in_current_scope(regs);
return adopt_ref(*new VariablesModel(move(variables), regs));
}
}
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