def initialize(environments = {}, outer_scope = {}, registers = {}, rethrow_errors = false, resource_limits = nil)
@environments = [environments].flatten
@scopes = [(outer_scope || {})]
@registers = registers
@errors = []
@resource_limits = resource_limits || Template.default_resource_limits.dup
@resource_limits[:render_score_current] = 0
@resource_limits[:assign_score_current] = 0
@parsed_expression = Hash.new{ |cache, markup| cache[markup] = Expression.parse(markup) }
squash_instance_assigns_with_environments
@this_stack_used = false
if rethrow_errors
self.exception_handler = ->(e) { true }
end
@interrupts = []
@filters = []
end