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Shell: Add support for enumerating lists in for loops

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With some odd syntax to boot:
```sh
$ for index i x in $whatever {}
```
This commit is contained in:
AnotherTest 2021-03-05 18:25:09 +03:30 • committed by Andreas Kling
parent a45b2ea6fb
commit 13b65b632a
8 changed files with 133 additions and 23 deletions
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10
Userland/Shell/AST.h
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@ -846,13 +846,15 @@ private:
class ForLoop final : public Node {
public:
ForLoop(Position, String variable_name, RefPtr<AST::Node> iterated_expr, RefPtr<AST::Node> block, Optional<Position> in_kw_position = {});
ForLoop(Position, Optional<NameWithPosition> variable, Optional<NameWithPosition> index_variable, RefPtr<AST::Node> iterated_expr, RefPtr<AST::Node> block, Optional<Position> in_kw_position = {}, Optional<Position> index_kw_position = {});
virtual ~ForLoop();
virtual void visit(NodeVisitor& visitor) override { visitor.visit(this); }
const String& variable_name() const { return m_variable_name; }
const Optional<NameWithPosition>& variable() const { return m_variable; }
const Optional<NameWithPosition>& index_variable() const { return m_index_variable; }
const RefPtr<Node>& iterated_expression() const { return m_iterated_expression; }
const RefPtr<Node>& block() const { return m_block; }
const Optional<Position> index_keyword_position() const { return m_index_kw_position; }
const Optional<Position> in_keyword_position() const { return m_in_kw_position; }
private:
@ -864,10 +866,12 @@ private:
virtual bool would_execute() const override { return true; }
virtual bool should_override_execution_in_current_process() const override { return true; }
String m_variable_name;
Optional<NameWithPosition> m_variable;
Optional<NameWithPosition> m_index_variable;
RefPtr<AST::Node> m_iterated_expression;
RefPtr<AST::Node> m_block;
Optional<Position> m_in_kw_position;
Optional<Position> m_index_kw_position;
};
class Glob final : public Node {