Class: Electr::BaseRule

Inherits:

Object

• Object
• Electr::BaseRule

Defined in:

lib/electr/parser/rules/base_rule.rb

Overview

Base class for the rules. «Just» follow the grammar’s rules to produce the AST.

Direct Known Subclasses

ExpressionRule, RootRule

Instance Method Summary

• #apply ⇒ Object

  Public: Apply the rule to the list of lexical units, creating and/or modifying the ast node.

• #initialize(units, ast_node) ⇒ BaseRule constructor

  Initialize a new rule.

Constructor Details

#initialize(units, ast_node) ⇒ BaseRule

Initialize a new rule. The units and ast_node objects given in arguments will be modified by #apply.

units - Array of LexicalUnits. ast_node - An AST object, for adding children, etc.

# File 'lib/electr/parser/rules/base_rule.rb', line 12

def initialize(units, ast_node)
  @units = units
  @ast_node = ast_node
  @series = []
end

Instance Method Details

#apply ⇒ Object

Public: Apply the rule to the list of lexical units, creating and/or modifying the ast node. #apply modify the units and ast_node objects given to #initialize.

Raises:

• (NotImplementedError)

# File 'lib/electr/parser/rules/base_rule.rb', line 21

def apply
  raise NotImplementedError
end