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Contents
require 'bel_parser/language'
require 'bel_parser/language/syntax_function'
require 'bel_parser/language/syntax_error'
require 'bel_parser/parsers/ast/node'
require 'concurrent/hash'
module BELParser
module Script
module Syntax
class InvalidRegexPattern
extend BELParser::Language::Syntax::SyntaxFunction
TARGET_NODE = BELParser::Parsers::AST::Pattern
def self.map(ast_node, script_context)
return nil unless ast_node.is_a?(TARGET_NODE)
pattern = ast_node.string.string_literal
begin
Regexp.new(pattern)
nil
rescue RegexpError => error
InvalidRegexPatternError.new(ast_node, pattern, error.to_s)
end
end
end
# InvalidRegexPattern indicates that a pattern represented an invalid
# regular expression.
class InvalidRegexPatternError < BELParser::Language::Syntax::SyntaxError
# Gets the invalid pattern.
attr_reader :pattern
def initialize(pattern_node, pattern, error_msg)
super(pattern_node, nil)
@pattern = pattern
@error_msg = error_msg
end
def msg
<<-MSG.gsub(/^ +/, '').delete("\n")
"#@pattern" is not a valid regular expression (#@error_msg).
MSG
end
end
end
end
end
Version data entries
59 entries across 59 versions & 1 rubygems