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Shell: Allow Syntax errors to be mutated while parsing

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Some nodes (such as heredocs) cannot be validated immediately, so the
entire tree will need to be revalidated if we don't allow mutating
syntax errors.
This commit is contained in:
Ali Mohammad Pur 2021-04-29 06:58:46 +04:30 • committed by Andreas Kling
parent 39369f1da6
commit 0d742557c6
2 changed files with 41 additions and 13 deletions
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22
Userland/Shell/AST.cpp
View file

@ -248,6 +248,25 @@ static Vector<String> resolve_slices(RefPtr<Shell> shell, Vector<String>&& value
return move(values);
}
void Node::clear_syntax_error()
{
m_syntax_error_node->clear_syntax_error();
}
void Node::set_is_syntax_error(const SyntaxError& error_node)
{
if (!m_syntax_error_node) {
m_syntax_error_node = error_node;
} else {
m_syntax_error_node->set_is_syntax_error(error_node);
}
}
bool Node::is_syntax_error() const
{
return m_syntax_error_node && m_syntax_error_node->is_syntax_error();
}
void Node::for_each_entry(RefPtr<Shell> shell, Function<IterationDecision(NonnullRefPtr<Value>)> callback)
{
auto value = run(shell)->resolve_without_cast(shell);
@ -1884,7 +1903,7 @@ ImmediateExpression::ImmediateExpression(Position position, NameWithPosition fun
, m_function(move(function))
, m_closing_brace_position(move(closing_brace_position))
{
if (m_is_syntax_error)
if (is_syntax_error())
return;
for (auto& argument : m_arguments) {
@ -3021,7 +3040,6 @@ SyntaxError::SyntaxError(Position position, String error, bool is_continuable)
, m_syntax_error_text(move(error))
, m_is_continuable(is_continuable)
{
m_is_syntax_error = true;
}
const SyntaxError& SyntaxError::syntax_error_node() const

32
Userland/Shell/AST.h
View file

@ -407,6 +407,9 @@ private:
};
class Node : public RefCounted<Node> {
AK_MAKE_NONCOPYABLE(Node);
AK_MAKE_NONMOVABLE(Node);
public:
virtual void dump(int level) const = 0;
virtual void for_each_entry(RefPtr<Shell> shell, Function<IterationDecision(NonnullRefPtr<Value>)> callback);
@ -431,20 +434,15 @@ public:
virtual bool is_tilde() const { return false; }
virtual bool is_variable_decls() const { return false; }
virtual bool is_simple_variable() const { return false; }
virtual bool is_syntax_error() const { return m_is_syntax_error; }
virtual bool is_syntax_error() const;
virtual bool is_list() const { return false; }
virtual bool would_execute() const { return false; }
virtual bool should_override_execution_in_current_process() const { return false; }
const Position& position() const { return m_position; }
void set_is_syntax_error(const SyntaxError& error_node)
{
if (!m_is_syntax_error) {
m_is_syntax_error = true;
m_syntax_error_node = error_node;
}
}
virtual void clear_syntax_error();
virtual void set_is_syntax_error(const SyntaxError& error_node);
virtual const SyntaxError& syntax_error_node() const
{
VERIFY(is_syntax_error());
@ -508,8 +506,7 @@ public:
protected:
Position m_position;
bool m_is_syntax_error { false };
RefPtr<const SyntaxError> m_syntax_error_node;
RefPtr<SyntaxError> m_syntax_error_node;
};
#define NODE(name) \
@ -1363,17 +1360,30 @@ public:
const String& error_text() const { return m_syntax_error_text; }
bool is_continuable() const { return m_is_continuable; }
virtual void clear_syntax_error() override
{
m_is_cleared = true;
}
virtual void set_is_syntax_error(const SyntaxError& error) override
{
m_is_cleared = error.m_is_cleared;
m_is_continuable = error.m_is_continuable;
m_syntax_error_text = error.error_text();
}
virtual bool is_syntax_error() const override { return !m_is_cleared; }
private:
NODE(SyntaxError);
virtual void dump(int level) const override;
virtual RefPtr<Value> run(RefPtr<Shell>) override;
virtual void highlight_in_editor(Line::Editor&, Shell&, HighlightMetadata = {}) override;
virtual HitTestResult hit_test_position(size_t) const override { return { nullptr, nullptr, nullptr }; }
virtual bool is_syntax_error() const override { return true; }
virtual const SyntaxError& syntax_error_node() const override;
String m_syntax_error_text;
bool m_is_continuable { false };
bool m_is_cleared { false };
};
class SyntheticNode final : public Node {