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# The base class for the 3x "parse tree", now only used by the top level
# constructs and the compiler.
# Handles things like file name, line #, and also does the initialization
# for all of the parameters of all of the child objects.
#
class Puppet::Parser::AST
AST = Puppet::Parser::AST
include Puppet::Util::Errors
attr_accessor :parent, :scope, :file, :line, :pos
def inspect
"( #{self.class} #{self} #{@children.inspect} )"
end
# Evaluate the current object. Just a stub method, since the subclass
# should override this method.
def evaluate(scope)
end
# The version of the evaluate method that should be called, because it
# correctly handles errors. It is critical to use this method because
# it can enable you to catch the error where it happens, rather than
# much higher up the stack.
def safeevaluate(scope)
# We duplicate code here, rather than using exceptwrap, because this
# is called so many times during parsing.
begin
return self.evaluate(scope)
rescue Puppet::Pops::Evaluator::PuppetStopIteration => detail
raise detail
# # Only deals with StopIteration from the break() function as a general
# # StopIteration is a general runtime problem
# raise Puppet::ParseError.new(detail.message, detail.file, detail.line, detail)
rescue Puppet::Error => detail
raise adderrorcontext(detail)
rescue => detail
error = Puppet::ParseError.new(detail.to_s, nil, nil, detail)
# We can't use self.fail here because it always expects strings,
# not exceptions.
raise adderrorcontext(error, detail)
end
end
def initialize(file: nil, line: nil, pos: nil)
@file = file
@line = line
@pos = pos
end
end
# And include all of the AST subclasses.
require_relative 'ast/branch'
require_relative 'ast/leaf'
require_relative 'ast/block_expression'
require_relative 'ast/hostclass'
require_relative 'ast/node'
require_relative 'ast/resource'
require_relative 'ast/resource_instance'
require_relative 'ast/resourceparam'
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