Ameba::AST::Scope

Creates a new scope. Accepts the AST node and the outer scope.

scope = Scope.new(class_node, nil)

Returns true if this reference is the same as other. Invokes same?.

Creates a new argument in the current scope.

scope = Scope.new(class_node, nil)
scope.add_argument(arg_node)

Adds a new instance variable to the current scope.

scope = Scope.new(class_node, nil)
scope.add_ivariable(ivar_node)

Adds a new type declaration variable to the current scope.

scope = Scope.new(class_node, nil)
scope.add_type_dec_variable(node)

Creates a new variable in the current scope.

scope = Scope.new(class_node, nil)
scope.add_variable(var_node)

Returns true if var is an argument in current scope, false otherwise.

Link to the arguments in current scope

Creates a new assignment for the variable.

scope = Scope.new(class_node, nil)
scope.assign_variable(var_name, assign_node)

Returns true if instance variable is assigned in this scope.

Returns true if type declaration variable is assigned in this scope.

Returns true if current scope represents a block (or proc), false otherwise.

Returns true if current scope is a class def, false otherwise.

Returns true if a local variable named name has a definition that reaches the program point where node (an inner scope's node) is introduced.

scope.declared_at?("foo", block_node)

Returns true if current scope is a def, false otherwise.

Returns true if current scope is a enum def, false otherwise.

Returns true if the node represents exactly the same Crystal node as @node.

Returns variable by its name or nil if it does not exist.

scope = Scope.new(class_node, nil)
scope.find_variable("foo")

Returns true if current scope is a fun def, false otherwise.

See Object#hash(hasher)

Returns true if current scope sits inside a macro.

List of inner scopes

Link to the instance variables used in current scope

Returns true if current scope is a lib def, false otherwise.

Returns true if current scope is a module def, false otherwise.

The actual AST node that represents a current scope.

Link to the outer scope

Link to all variable references in current scope

Returns true if current scope (or any of inner scopes) references variable, false otherwise.

Returns true if current scope represents a spawn block, e. g.

spawn do
  # ...
end

Returns true if this scope is a top level scope, false otherwise.

Link to the type declaration variables used in current scope

Returns true if and only if current scope represents some type definition, for example a class.

Link to local variables

Returns visibility of the current scope (could be inherited from the outer scope).

Scope visibility level

Whether the scope yields.

Returns true if current scope (or any of inner scopes) yields, false otherwise.