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https://github.com/SerenityOS/serenity
synced 2024-09-29 04:34:38 +00:00
Shell: Show descriptions about syntax errors
The description contains an error message and where in the source the error happened.
This commit is contained in:
parent
034be8e74c
commit
d6de2b5828
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@ -174,8 +174,10 @@ And::And(Position position, RefPtr<Node> left, RefPtr<Node> right)
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, m_left(move(left))
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, m_right(move(right))
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{
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if (m_left->is_syntax_error() || m_right->is_syntax_error())
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set_is_syntax_error();
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if (m_left->is_syntax_error())
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set_is_syntax_error(m_left->syntax_error_node());
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else if (m_right->is_syntax_error())
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set_is_syntax_error(m_right->syntax_error_node());
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}
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And::~And()
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@ -233,8 +235,10 @@ ListConcatenate::ListConcatenate(Position position, RefPtr<Node> element, RefPtr
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, m_element(move(element))
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, m_list(move(list))
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{
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if (m_element->is_syntax_error() || m_list->is_syntax_error())
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set_is_syntax_error();
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if (m_element->is_syntax_error())
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set_is_syntax_error(m_element->syntax_error_node());
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else if (m_list->is_syntax_error())
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set_is_syntax_error(m_list->syntax_error_node());
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}
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ListConcatenate::~ListConcatenate()
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@ -274,7 +278,7 @@ Background::Background(Position position, RefPtr<Node> command)
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, m_command(move(command))
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{
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if (m_command->is_syntax_error())
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set_is_syntax_error();
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set_is_syntax_error(m_command->syntax_error_node());
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}
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Background::~Background()
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@ -386,7 +390,7 @@ CastToCommand::CastToCommand(Position position, RefPtr<Node> inner)
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, m_inner(move(inner))
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{
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if (m_inner->is_syntax_error())
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set_is_syntax_error();
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set_is_syntax_error(m_inner->syntax_error_node());
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}
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CastToCommand::~CastToCommand()
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@ -442,7 +446,7 @@ CastToList::CastToList(Position position, RefPtr<Node> inner)
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, m_inner(move(inner))
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{
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if (m_inner && m_inner->is_syntax_error())
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set_is_syntax_error();
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set_is_syntax_error(m_inner->syntax_error_node());
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}
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CastToList::~CastToList()
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@ -565,7 +569,7 @@ DoubleQuotedString::DoubleQuotedString(Position position, RefPtr<Node> inner)
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, m_inner(move(inner))
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{
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if (m_inner->is_syntax_error())
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set_is_syntax_error();
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set_is_syntax_error(m_inner->syntax_error_node());
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}
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DoubleQuotedString::~DoubleQuotedString()
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@ -613,7 +617,7 @@ DynamicEvaluate::DynamicEvaluate(Position position, RefPtr<Node> inner)
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, m_inner(move(inner))
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{
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if (m_inner->is_syntax_error())
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set_is_syntax_error();
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set_is_syntax_error(m_inner->syntax_error_node());
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}
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DynamicEvaluate::~DynamicEvaluate()
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@ -865,7 +869,7 @@ Execute::Execute(Position position, RefPtr<Node> command, bool capture_stdout)
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, m_capture_stdout(capture_stdout)
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{
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if (m_command->is_syntax_error())
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set_is_syntax_error();
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set_is_syntax_error(m_command->syntax_error_node());
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}
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Execute::~Execute()
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@ -911,8 +915,10 @@ Join::Join(Position position, RefPtr<Node> left, RefPtr<Node> right)
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, m_left(move(left))
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, m_right(move(right))
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{
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if (m_left->is_syntax_error() || m_right->is_syntax_error())
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set_is_syntax_error();
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if (m_left->is_syntax_error())
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set_is_syntax_error(m_left->syntax_error_node());
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else if (m_right->is_syntax_error())
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set_is_syntax_error(m_right->syntax_error_node());
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}
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Join::~Join()
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@ -969,8 +975,10 @@ Or::Or(Position position, RefPtr<Node> left, RefPtr<Node> right)
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, m_left(move(left))
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, m_right(move(right))
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{
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if (m_left->is_syntax_error() || m_right->is_syntax_error())
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set_is_syntax_error();
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if (m_left->is_syntax_error())
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set_is_syntax_error(m_left->syntax_error_node());
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else if (m_right->is_syntax_error())
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set_is_syntax_error(m_right->syntax_error_node());
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}
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Or::~Or()
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@ -1030,8 +1038,10 @@ Pipe::Pipe(Position position, RefPtr<Node> left, RefPtr<Node> right)
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, m_left(move(left))
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, m_right(move(right))
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{
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if (m_left->is_syntax_error() || m_right->is_syntax_error())
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set_is_syntax_error();
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if (m_left->is_syntax_error())
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set_is_syntax_error(m_left->syntax_error_node());
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else if (m_right->is_syntax_error())
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set_is_syntax_error(m_right->syntax_error_node());
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}
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Pipe::~Pipe()
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@ -1189,8 +1199,10 @@ Sequence::Sequence(Position position, RefPtr<Node> left, RefPtr<Node> right)
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, m_left(move(left))
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, m_right(move(right))
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{
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if (m_left->is_syntax_error() || m_right->is_syntax_error())
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set_is_syntax_error();
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if (m_left->is_syntax_error())
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set_is_syntax_error(m_left->syntax_error_node());
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else if (m_right->is_syntax_error())
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set_is_syntax_error(m_right->syntax_error_node());
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}
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Sequence::~Sequence()
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@ -1408,8 +1420,10 @@ Juxtaposition::Juxtaposition(Position position, RefPtr<Node> left, RefPtr<Node>
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, m_left(move(left))
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, m_right(move(right))
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{
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if (m_left->is_syntax_error() || m_right->is_syntax_error())
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set_is_syntax_error();
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if (m_left->is_syntax_error())
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set_is_syntax_error(m_left->syntax_error_node());
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else if (m_right->is_syntax_error())
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set_is_syntax_error(m_right->syntax_error_node());
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}
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Juxtaposition::~Juxtaposition()
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@ -1486,8 +1500,10 @@ StringPartCompose::StringPartCompose(Position position, RefPtr<Node> left, RefPt
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, m_left(move(left))
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, m_right(move(right))
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{
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if (m_left->is_syntax_error() || m_right->is_syntax_error())
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set_is_syntax_error();
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if (m_left->is_syntax_error())
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set_is_syntax_error(m_left->syntax_error_node());
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else if (m_right->is_syntax_error())
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set_is_syntax_error(m_right->syntax_error_node());
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}
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StringPartCompose::~StringPartCompose()
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@ -1510,10 +1526,16 @@ void SyntaxError::highlight_in_editor(Line::Editor& editor, Shell&, HighlightMet
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editor.stylize({ m_position.start_offset, m_position.end_offset }, { Line::Style::Foreground(Line::Style::XtermColor::Red), Line::Style::Bold });
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}
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SyntaxError::SyntaxError(Position position)
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SyntaxError::SyntaxError(Position position, String error)
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: Node(move(position))
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, m_syntax_error_text(move(error))
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{
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set_is_syntax_error();
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m_is_syntax_error = true;
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}
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const SyntaxError& SyntaxError::syntax_error_node() const
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{
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return *this;
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}
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SyntaxError::~SyntaxError()
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@ -1692,8 +1714,12 @@ VariableDeclarations::VariableDeclarations(Position position, Vector<Variable> v
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, m_variables(move(variables))
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{
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for (auto& decl : m_variables) {
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if (decl.name->is_syntax_error() || decl.value->is_syntax_error()) {
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set_is_syntax_error();
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if (decl.name->is_syntax_error()) {
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set_is_syntax_error(decl.name->syntax_error_node());
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break;
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}
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if (decl.value->is_syntax_error()) {
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set_is_syntax_error(decl.value->syntax_error_node());
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break;
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}
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}
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19
Shell/AST.h
19
Shell/AST.h
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@ -333,11 +333,21 @@ public:
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virtual bool would_execute() const { return false; }
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const Position& position() const { return m_position; }
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void set_is_syntax_error() { m_is_syntax_error = true; }
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void set_is_syntax_error(const SyntaxError& error_node)
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{
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m_is_syntax_error = true;
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m_syntax_error_node = error_node;
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}
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virtual const SyntaxError& syntax_error_node() const
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{
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ASSERT(is_syntax_error());
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return *m_syntax_error_node;
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}
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protected:
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Position m_position;
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bool m_is_syntax_error { false };
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RefPtr<const SyntaxError> m_syntax_error_node;
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};
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class PathRedirectionNode : public Node {
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@ -766,9 +776,11 @@ private:
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class SyntaxError final : public Node {
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public:
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SyntaxError(Position);
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SyntaxError(Position, String);
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virtual ~SyntaxError();
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const String& error_text() const { return m_syntax_error_text; }
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private:
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virtual void dump(int level) const override;
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virtual RefPtr<Value> run(RefPtr<Shell>) override;
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@ -776,6 +788,9 @@ private:
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virtual HitTestResult hit_test_position(size_t) override { return { nullptr, nullptr }; }
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virtual String class_name() const override { return "SyntaxError"; }
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virtual bool is_syntax_error() const override { return true; }
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virtual const SyntaxError& syntax_error_node() const override;
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String m_syntax_error_text;
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};
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class Tilde final : public Node {
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@ -31,5 +31,6 @@ namespace AST {
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class Node;
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class Value;
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class SyntaxError;
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}
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@ -123,7 +123,7 @@ RefPtr<AST::Node> Parser::parse()
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// Parsing stopped midway, this is a syntax error.
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auto error_start = push_start();
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m_offset = m_input.length();
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return create<AST::Join>(move(toplevel), create<AST::SyntaxError>());
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return create<AST::Join>(move(toplevel), create<AST::SyntaxError>("Unexpected tokens past the end"));
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}
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return toplevel;
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@ -234,7 +234,7 @@ RefPtr<AST::Node> Parser::parse_variable_decls()
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if (!command)
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m_offset = start->offset;
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else if (!expect(')'))
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command->set_is_syntax_error();
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command->set_is_syntax_error(*create<AST::SyntaxError>("Expected a terminating close paren"));
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expression = command;
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}
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}
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@ -341,7 +341,7 @@ RefPtr<AST::Node> Parser::parse_redirection()
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// Eat a character and hope the problem goes away
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consume();
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}
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return create<AST::SyntaxError>();
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return create<AST::SyntaxError>("Expected a path");
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}
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return create<AST::WriteAppendRedirection>(pipe_fd, move(path)); // Redirection WriteAppend
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}
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@ -363,7 +363,10 @@ RefPtr<AST::Node> Parser::parse_redirection()
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ASSERT(fd.has_value());
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dest_pipe_fd = fd.value();
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}
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return create<AST::Fd2FdRedirection>(pipe_fd, dest_pipe_fd); // Redirection Fd2Fd
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auto redir = create<AST::Fd2FdRedirection>(pipe_fd, dest_pipe_fd); // Redirection Fd2Fd
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if (dest_pipe_fd == -1)
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redir->set_is_syntax_error(*create<AST::SyntaxError>("Expected a file descriptor"));
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return redir;
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}
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consume_while(is_whitespace);
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pipe_fd = pipe_fd >= 0 ? pipe_fd : STDOUT_FILENO;
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@ -373,7 +376,7 @@ RefPtr<AST::Node> Parser::parse_redirection()
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// Eat a character and hope the problem goes away
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consume();
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}
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return create<AST::SyntaxError>();
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return create<AST::SyntaxError>("Expected a path");
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}
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return create<AST::WriteRedirection>(pipe_fd, move(path)); // Redirection Write
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}
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@ -397,7 +400,7 @@ RefPtr<AST::Node> Parser::parse_redirection()
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// Eat a character and hope the problem goes away
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consume();
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}
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return create<AST::SyntaxError>();
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return create<AST::SyntaxError>("Expected a path");
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}
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if (mode == Read)
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return create<AST::ReadRedirection>(pipe_fd, move(path)); // Redirection Read
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@ -530,10 +533,10 @@ RefPtr<AST::Node> Parser::parse_string()
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consume();
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auto inner = parse_doublequoted_string_inner();
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if (!inner)
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inner = create<AST::SyntaxError>();
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inner = create<AST::SyntaxError>("Unexpected EOF in string");
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if (!expect('"')) {
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inner = create<AST::DoubleQuotedString>(move(inner));
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inner->set_is_syntax_error();
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inner->set_is_syntax_error(*create<AST::SyntaxError>("Expected a terminating double quote"));
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return inner;
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}
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return create<AST::DoubleQuotedString>(move(inner)); // Double Quoted String
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@ -547,7 +550,7 @@ RefPtr<AST::Node> Parser::parse_string()
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is_error = true;
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auto result = create<AST::StringLiteral>(move(text)); // String Literal
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if (is_error)
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result->set_is_syntax_error();
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result->set_is_syntax_error(*create<AST::SyntaxError>("Expected a terminating single quote"));
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return move(result);
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}
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@ -682,15 +685,15 @@ RefPtr<AST::Node> Parser::parse_evaluate()
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consume();
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auto inner = parse_pipe_sequence();
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if (!inner)
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inner = create<AST::SyntaxError>();
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inner = create<AST::SyntaxError>("Unexpected EOF in list");
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if (!expect(')'))
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inner->set_is_syntax_error();
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inner->set_is_syntax_error(*create<AST::SyntaxError>("Expected a terminating close paren"));
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return create<AST::Execute>(move(inner), true);
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}
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auto inner = parse_expression();
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if (!inner) {
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inner = create<AST::SyntaxError>();
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inner = create<AST::SyntaxError>("Expected a command");
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} else {
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if (inner->is_list()) {
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auto execute_inner = create<AST::Execute>(move(inner), true);
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@ -814,7 +817,7 @@ RefPtr<AST::Node> Parser::parse_glob()
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} else {
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// FIXME: Allow composition of tilde+bareword with globs: '~/foo/bar/baz*'
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putback();
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bareword_part->set_is_syntax_error();
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bareword_part->set_is_syntax_error(*create<AST::SyntaxError>(String::format("Unexpected %s inside a glob", bareword_part->class_name().characters())));
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return bareword_part;
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}
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textbuilder.append(text);
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@ -325,8 +325,10 @@ int Shell::run_command(const StringView& cmd)
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return 0;
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if (command->is_syntax_error()) {
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// FIXME: Provide descriptive messages for syntax errors.
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fprintf(stderr, "Shell: Syntax error in command\n");
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auto& error_node = command->syntax_error_node();
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auto& position = error_node.position();
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fprintf(stderr, "Shell: Syntax error in command: %s\n", error_node.error_text().characters());
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fprintf(stderr, "Around '%.*s'\n", (int)min(position.end_offset - position.start_offset, (size_t)10), cmd.characters_without_null_termination() + position.start_offset);
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return 1;
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}
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