Class: Dhallish::Ast::Import_Alternative

Inherits:

Object

• Object
• Dhallish::Ast::Import_Alternative

Defined in:

lib/ast.rb

Instance Attribute Summary

• #lhs ⇒ Object

  Returns the value of attribute lhs.

• #rhs ⇒ Object

  Returns the value of attribute rhs.

Instance Method Summary

• #compute_type(ctx) ⇒ Object
• #evaluate(ctx) ⇒ Object
• #initialize(lhs, rhs) ⇒ Import_Alternative constructor

  A new instance of Import_Alternative.

Constructor Details

#initialize(lhs, rhs) ⇒ Import_Alternative

Returns a new instance of Import_Alternative.

# File 'lib/ast.rb', line 779

def initialize(lhs, rhs)
	@lhs = lhs
	@rhs = rhs
	@lhs_succeded = false
end

Instance Attribute Details

#lhs ⇒ Object

Returns the value of attribute lhs.

# File 'lib/ast.rb', line 776

def lhs
  @lhs
end

#rhs ⇒ Object

Returns the value of attribute rhs.

# File 'lib/ast.rb', line 777

def rhs
  @rhs
end

Instance Method Details

#compute_type(ctx) ⇒ Object

# File 'lib/ast.rb', line 785

def compute_type(ctx)
	begin
		type = @lhs.compute_type ctx
		@lhs_succeded = true
		type
	rescue AssertionError, DhallError => e
		raise e
	rescue
		@rhs.compute_type ctx
	end
end

#evaluate(ctx) ⇒ Object

# File 'lib/ast.rb', line 797

def evaluate(ctx)
	if @lhs_succeded
		@lhs.evaluate ctx
	else
		@rhs.evaluate ctx
	end
end