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Contents
require 'roodi/checks/cyclomatic_complexity_check'
module Roodi
module Checks
# Checks cyclomatic complexity of a block against a specified limit.
#
# The cyclomatic complexity is measured by the number of "if", "unless", "elsif", "?:",
# "while", "until", "for", "rescue", "case", "when", "&&", "and", "||" and "or"
# statements (plus one) in the body of the member. It is a measure of the minimum
# number of possible paths through the source and therefore the number of required tests.
#
# Generally, for a block, 1-2 is considered good, 3-4 ok, 5-8 consider re-factoring, and 8+
# re-factor now!
class CyclomaticComplexityBlockCheck < CyclomaticComplexityCheck
DEFAULT_COMPLEXITY = 4
def initialize
super()
self.complexity = DEFAULT_COMPLEXITY
end
def interesting_nodes
[:iter] + COMPLEXITY_NODE_TYPES
end
def evaluate_start_iter(node)
increase_depth
end
def evaluate_end_iter(node)
decrease_depth
end
def evaluate_matching_end
add_error "Block cyclomatic complexity is #{@count}. It should be #{@complexity} or less." unless @count <= @complexity
end
end
end
end
Version data entries
15 entries across 15 versions & 2 rubygems