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LibJS: Add a traceback to Error

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Since we have the traceback we now also generate the stack string on
demand instead of immediately on construction.
This commit is contained in:
davidot 2022-02-07 14:48:09 +01:00 • committed by Linus Groh
parent f324d91106
commit e160f508a8
3 changed files with 39 additions and 18 deletions
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12
Userland/Libraries/LibJS/Runtime/Error.h
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@ -10,9 +10,15 @@
#include <AK/FlyString.h>
#include <LibJS/Runtime/Completion.h>
#include <LibJS/Runtime/Object.h>
#include <LibJS/SourceRange.h>
namespace JS {
struct TracebackFrame {
FlyString function_name;
SourceRange source_range;
};
class Error : public Object {
JS_OBJECT(Error, Object);
@ -23,13 +29,15 @@ public:
explicit Error(Object& prototype);
virtual ~Error() override = default;
String const& stack_string() const { return m_stack_string; }
[[nodiscard]] String stack_string() const;
ThrowCompletionOr<void> install_error_cause(Value options);
Vector<TracebackFrame, 32> const& traceback() const { return m_traceback; }
private:
void populate_stack();
String m_stack_string {};
Vector<TracebackFrame, 32> m_traceback;
};
// NOTE: Making these inherit from Error is not required by the spec but