Class: Koto::Parser::AST::Processor::Context

Inherits:
Object
  • Object
show all
Defined in:
lib/koto.rb,
lib/koto/parser/ast/processor/context.rb,
lib/koto/parser/ast/processor/context/symbol_table.rb

Defined Under Namespace

Classes: SymbolTable

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Context

Returns a new instance of Context.



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# File 'lib/koto/parser/ast/processor/context.rb', line 13

def initialize
  @scopes  = SpaghettiStack.new(SymbolTable.new)
  @stack   = []
  @access  = :public

  freeze
end

Instance Attribute Details

#access ⇒ Object (readonly)

Returns the value of attribute access.



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# File 'lib/koto/parser/ast/processor/context.rb', line 11

def access
  @access
end

#scopes ⇒ Object (readonly)

Returns the value of attribute scopes.



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# File 'lib/koto/parser/ast/processor/context.rb', line 9

def scopes
  @scopes
end

#stack ⇒ Object (readonly)

Returns the value of attribute stack.



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# File 'lib/koto/parser/ast/processor/context.rb', line 10

def stack
  @stack
end

Instance Method Details

#active_scope ⇒ Object 



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# File 'lib/koto/parser/ast/processor/context.rb', line 72

def active_scope
  @scopes.top
end

#current_scope ⇒ Object 



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# File 'lib/koto/parser/ast/processor/context.rb', line 76

def current_scope
  @stack.last
end

#get_in(node) ⇒ Object 



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# File 'lib/koto/parser/ast/processor/context.rb', line 21

def get_in(node)
  copy = self.deep_dup
  copy.send :get_in!, node
end

#get_out ⇒ Object 



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# File 'lib/koto/parser/ast/processor/context.rb', line 35

def get_out
  copy = self.deep_dup
  copy.send :get_out!
end

#in_block? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/koto/parser/ast/processor/context.rb', line 114

def in_block?
  return false if top_level?
  current_scope.type == :block
end

#in_class? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/koto/parser/ast/processor/context.rb', line 94

def in_class?
  return false if top_level?
  current_scope.type == :class
end

#in_def? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/koto/parser/ast/processor/context.rb', line 109

def in_def?
  return false if top_level?
  current_scope.type == :def
end

#in_dynamic_block? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/koto/parser/ast/processor/context.rb', line 124

def in_dynamic_block?
  in_block? || in_lambda?
end

#in_lambda? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/koto/parser/ast/processor/context.rb', line 119

def in_lambda?
  return false if top_level?
  current_scope.type == :lambda
end

#in_module? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/koto/parser/ast/processor/context.rb', line 104

def in_module?
  return false if top_level?
  current_scope.type == :module
end

#in_sclass? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/koto/parser/ast/processor/context.rb', line 99

def in_sclass?
  return false if top_level?
  current_scope.type == :sclass
end

#save(node) ⇒ Object 



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# File 'lib/koto/parser/ast/processor/context.rb', line 54

def save(node)
  copy = self.deep_dup
  copy.send :save!, node
end

#switch_access_to(access) ⇒ Object 



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# File 'lib/koto/parser/ast/processor/context.rb', line 80

def switch_access_to(access)
  return self unless ACCESS_METHODS.include?(access) &&
    access != @access

  copy = self.dup
  copy.instance_variable_set(:@access, access)

  copy.freeze
end

#symbols ⇒ Object 



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# File 'lib/koto/parser/ast/processor/context.rb', line 68

def symbols
  active_scope.data
end

#top_level? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/koto/parser/ast/processor/context.rb', line 90

def top_level?
  @stack.empty?
end