63 lines
1.8 KiB
C++
63 lines
1.8 KiB
C++
/*
|
|
* Copyright (c) 2021, Andreas Kling <kling@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#include <LibJS/Bytecode/Block.h>
|
|
#include <LibJS/Bytecode/Instruction.h>
|
|
#include <LibJS/Bytecode/Interpreter.h>
|
|
#include <LibJS/Runtime/GlobalObject.h>
|
|
|
|
namespace JS::Bytecode {
|
|
|
|
Interpreter::Interpreter(GlobalObject& global_object)
|
|
: m_vm(global_object.vm())
|
|
, m_global_object(global_object)
|
|
{
|
|
}
|
|
|
|
Interpreter::~Interpreter()
|
|
{
|
|
}
|
|
|
|
void Interpreter::run(Bytecode::Block const& block)
|
|
{
|
|
dbgln("Bytecode::Interpreter will run block {:p}", &block);
|
|
|
|
CallFrame global_call_frame;
|
|
global_call_frame.this_value = &global_object();
|
|
static FlyString global_execution_context_name = "(*BC* global execution context)";
|
|
global_call_frame.function_name = global_execution_context_name;
|
|
global_call_frame.scope = &global_object();
|
|
VERIFY(!vm().exception());
|
|
// FIXME: How do we know if we're in strict mode? Maybe the Bytecode::Block should know this?
|
|
// global_call_frame.is_strict_mode = ???;
|
|
vm().push_call_frame(global_call_frame, global_object());
|
|
VERIFY(!vm().exception());
|
|
|
|
m_registers.resize(block.register_count());
|
|
|
|
size_t pc = 0;
|
|
while (pc < block.instructions().size()) {
|
|
auto& instruction = block.instructions()[pc];
|
|
instruction.execute(*this);
|
|
if (m_pending_jump.has_value()) {
|
|
pc = m_pending_jump.release_value();
|
|
continue;
|
|
}
|
|
++pc;
|
|
}
|
|
|
|
dbgln("Bytecode::Interpreter did run block {:p}", &block);
|
|
for (size_t i = 0; i < m_registers.size(); ++i) {
|
|
String value_string;
|
|
if (m_registers[i].is_empty())
|
|
value_string = "(empty)";
|
|
else
|
|
value_string = m_registers[i].to_string_without_side_effects();
|
|
dbgln("[{:3}] {}", i, value_string);
|
|
}
|
|
}
|
|
|
|
}
|