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LibJS: Add VM::dump_scope_chain()

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This is a handy helper that dumps the current scope chain, starting at
the innermost scope.
This commit is contained in:
Andreas Kling 2021-06-21 20:54:02 +02:00
parent 4c8df58e08
commit 0d2aba07aa
2 changed files with 14 additions and 0 deletions
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13
Userland/Libraries/LibJS/Runtime/VM.cpp
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@ -622,4 +622,17 @@ void VM::dump_backtrace() const
dbgln("-> {}", m_call_stack[i]->function_name);
}
void VM::dump_scope_chain() const
{
for (auto* scope = current_scope(); scope; scope = scope->parent()) {
dbgln("+> {} ({:p})", scope->class_name(), scope);
if (is<LexicalEnvironment>(*scope)) {
auto& lexical_environment = static_cast<LexicalEnvironment const&>(*scope);
for (auto& variable : lexical_environment.variables()) {
dbgln(" {}", variable.key);
}
}
}
}
}

1
Userland/Libraries/LibJS/Runtime/VM.h
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@ -72,6 +72,7 @@ public:
void clear_exception() { m_exception = nullptr; }
void dump_backtrace() const;
void dump_scope_chain() const;
class InterpreterExecutionScope {
public: