Class: BELParser::Language::Semantics::SemanticIsSequencePosition

Inherits:
SemanticASTNode show all
Defined in:
lib/bel_parser/language/semantics_ast.rb

Overview

AST node for IsSequencePosition is a semantic AST.

Instance Attribute Summary

Attributes inherited from AST::Node

#children, #hash, #type

Instance Method Summary collapse

Methods inherited from SemanticASTNode

#terminal?

Methods inherited from AST::Node

#==, #append, #concat, #dup, #eql?, #inspect, #to_a, #to_ast, #to_bel, #to_s, #to_sexp, #updated

Methods included from Parsers

#serialize

Constructor Details

#initialize(**properties) ⇒ SemanticIsSequencePosition

Returns a new instance of SemanticIsSequencePosition.



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# File 'lib/bel_parser/language/semantics_ast.rb', line 765

def initialize(**properties)
  super(:is_sequence_position, [], properties)
end

Instance Method Details

#match(value_node, spec, will_match_partial = false) ⇒ Object 



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# File 'lib/bel_parser/language/semantics_ast.rb', line 769

def match(value_node, spec, will_match_partial = false)
  string_literal = value_node.children[0].string_literal
  integer_position =
    begin
      Integer(string_literal)
    rescue
      nil
    end
  if integer_position && integer_position > 0
    success(value_node, spec)
  else
    invalid_sequence_position_warning(value_node, spec)
  end
end