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Contents
module Puppet::Pops
module Evaluator
# Literal values for
# String (not containing interpolation)
# Numbers
# Booleans
# Undef (produces nil)
# Array
# Hash
# QualifiedName
# Default (produced :default)
# Regular Expression (produces ruby regular expression)
# QualifiedReference
# AccessExpresion
#
class LiteralEvaluator
COMMA_SEPARATOR = ', '.freeze
def initialize
@@literal_visitor ||= Visitor.new(self, "literal", 0, 0)
end
def literal(ast)
@@literal_visitor.visit_this_0(self, ast)
end
def literal_Object(o)
throw :not_literal
end
def literal_Factory(o)
literal(o.model)
end
def literal_Program(o)
literal(o.body)
end
def literal_LiteralString(o)
o.value
end
def literal_QualifiedName(o)
o.value
end
def literal_LiteralNumber(o)
o.value
end
def literal_LiteralBoolean(o)
o.value
end
def literal_LiteralUndef(o)
nil
end
def literal_LiteralDefault(o)
:default
end
def literal_LiteralRegularExpression(o)
o.value
end
def literal_QualifiedReference(o)
o.value
end
def literal_AccessExpression(o)
# to prevent parameters with [[]] like Optional[[String]]
throw :not_literal if o.keys.size == 1 && o.keys[0].is_a?(Model::LiteralList)
o.keys.map { |v| literal(v) }
end
def literal_UnaryMinusExpression(o)
-literal(o.expr)
end
def literal_ConcatenatedString(o)
# use double quoted string value if there is no interpolation
throw :not_literal unless o.segments.size == 1 && o.segments[0].is_a?(Model::LiteralString)
o.segments[0].value
end
def literal_LiteralList(o)
o.values.map {|v| literal(v) }
end
def literal_LiteralHash(o)
o.entries.reduce({}) do |result, entry|
result[literal(entry.key)] = literal(entry.value)
result
end
end
end
end
end
Version data entries
24 entries across 24 versions & 1 rubygems