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LibJS/Bytecode: Simplify creating/leaving lexical environment

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Since we no longer need to create or leave var environments directly
in bytecode, we can streamline the two instructions by making them
always operate on the lexical environment.
This commit is contained in:
Andreas Kling
2023-06-16 16:43:24 +02:00
parent 12ce0789da
commit dbfe1311ef
6 changed files with 25 additions and 45 deletions
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12
Userland/Libraries/LibJS/Bytecode/Generator.cpp
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@@ -96,7 +96,7 @@ void Generator::block_declaration_instantiation(ScopeNode const& scope_node)
void Generator::begin_variable_scope()
{
start_boundary(BlockBoundaryType::LeaveLexicalEnvironment);
emit<Bytecode::Op::CreateEnvironment>(Bytecode::Op::EnvironmentMode::Lexical);
emit<Bytecode::Op::CreateLexicalEnvironment>();
}
void Generator::end_variable_scope()
@@ -104,7 +104,7 @@ void Generator::end_variable_scope()
end_boundary(BlockBoundaryType::LeaveLexicalEnvironment);
if (!m_current_basic_block->is_terminated()) {
emit<Bytecode::Op::LeaveEnvironment>(Bytecode::Op::EnvironmentMode::Lexical);
emit<Bytecode::Op::LeaveLexicalEnvironment>();
}
}
@@ -313,7 +313,7 @@ void Generator::generate_break()
last_was_finally = false;
break;
case LeaveLexicalEnvironment:
emit<Bytecode::Op::LeaveEnvironment>(Bytecode::Op::EnvironmentMode::Lexical);
emit<Bytecode::Op::LeaveLexicalEnvironment>();
break;
case Continue:
break;
@@ -341,7 +341,7 @@ void Generator::generate_break(DeprecatedFlyString const& break_label)
emit<Bytecode::Op::LeaveUnwindContext>();
last_was_finally = false;
} else if (boundary == BlockBoundaryType::LeaveLexicalEnvironment) {
emit<Bytecode::Op::LeaveEnvironment>(Bytecode::Op::EnvironmentMode::Lexical);
emit<Bytecode::Op::LeaveLexicalEnvironment>();
} else if (boundary == BlockBoundaryType::ReturnToFinally) {
auto& block = make_block(DeprecatedString::formatted("{}.break", current_block().name()));
emit<Op::ScheduleJump>(Label { block });
@@ -381,7 +381,7 @@ void Generator::generate_continue()
last_was_finally = false;
break;
case LeaveLexicalEnvironment:
emit<Bytecode::Op::LeaveEnvironment>(Bytecode::Op::EnvironmentMode::Lexical);
emit<Bytecode::Op::LeaveLexicalEnvironment>();
break;
case Break:
break;
@@ -409,7 +409,7 @@ void Generator::generate_continue(DeprecatedFlyString const& continue_label)
emit<Bytecode::Op::LeaveUnwindContext>();
last_was_finally = false;
} else if (boundary == BlockBoundaryType::LeaveLexicalEnvironment) {
emit<Bytecode::Op::LeaveEnvironment>(Bytecode::Op::EnvironmentMode::Lexical);
emit<Bytecode::Op::LeaveLexicalEnvironment>();
} else if (boundary == BlockBoundaryType::ReturnToFinally) {
auto& block = make_block(DeprecatedString::formatted("{}.continue", current_block().name()));
emit<Op::ScheduleJump>(Label { block });