class Ameba::AST::Scope

• Ameba::AST::Scope
• Reference
• Object

Overview

Represents a context of the local variable visibility. This is where the local variables belong to.

Defined in:

Constructors

• .new(node : Crystal::ASTNode, outer_scope : Nil | Ameba::AST::Scope = nil)

  Creates a new scope.

Instance Method Summary

• #==(other : self)

  Returns true if this reference is the same as other.

• #add_argument(node)

  Creates a new argument in the current scope.

• #add_ivariable(node)

  Adds a new instance variable to the current scope.

• #add_type_dec_variable(node)

  Adds a new type declaration variable to the current scope.

• #add_variable(node)

  Creates a new variable in the current scope.

• #arg?(var)

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

• #arguments : Array(Ameba::AST::Argument)

  Link to the arguments in current scope

• #assign_variable(name, node)

  Creates a new assignment for the variable.

• #assigns_ivar?(name)

  Returns true if instance variable is assigned in this scope.

• #assigns_type_dec?(name)

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

• #block?

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

• #class_def?(*, check_outer_scopes = false)

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

• #def?(*, check_outer_scopes = false)

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

• #end_location(*args, **options)
• #end_location(*args, **options, &)
• #enum_def?(*, check_outer_scopes = false)

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

• #eql?(node)

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

• #find_variable(name : String)

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

• #fun_def?(*, check_outer_scopes = false)

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

• #hash(hasher)

  See Object#hash(hasher)

• #in_macro?

  Returns true if current scope sits inside a macro.

• #inherited?
• #inherited?(&)
• #inner_scopes : Array(Ameba::AST::Scope)

  List of inner scopes

• #ivariables : Array(Ameba::AST::InstanceVariable)

  Link to the instance variables used in current scope

• #lib_def?(*, check_outer_scopes = false)

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

• #location(*args, **options)
• #location(*args, **options, &)
• #module_def?(*, check_outer_scopes = false)

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

• #node : Crystal::ASTNode

  The actual AST node that represents a current scope.

• #outer_scope : Scope | Nil

  Link to the outer scope

• #references : Array(Ameba::AST::Reference)

  Link to all variable references in currency scope

• #references?(variable : Variable, check_inner_scopes = true)

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

• #spawn_block?

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

• #to_s(*args, **options)
• #to_s(*args, **options, &)
• #top_level?

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

• #type_dec_variables : Array(Ameba::AST::TypeDecVariable)

  Link to the type declaration variables used in current scope

• #type_definition?

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

• #variables : Array(Ameba::AST::Variable)

  Link to local variables

• #visibility

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

• #visibility=(visibility : Crystal::Visibility | Nil)

  Scope visibility level

• #yields=(yields : Bool)

  Whether the scope yields.

• #yields?(check_inner_scopes = true)

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

Constructor Detail

scope = Scope.new(class_node, nil)

Instance Method Detail

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

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

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

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

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

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

spawn do
  # ...
end