class AdLint::Exam::CBuiltin::W0598

Public Class Methods

new(phase_ctxt) click to toggle source
Calls superclass method AdLint::Examination::new
# File lib/adlint/exam/c_builtin/cc1_check.rb, line 13952
def initialize(phase_ctxt)
  super
  interp = phase_ctxt[:cc1_interpreter]
  interp.on_sequence_point_reached += T(:commit_changes)
  interp.on_variable_value_updated += T(:update_variable)
  @update_cnt = [Hash.new(0)]
end

Private Instance Methods

commit_changes(seqp) click to toggle source
# File lib/adlint/exam/c_builtin/cc1_check.rb, line 13961
def commit_changes(seqp)
  if seqp.obvious?
    updated_vars = @update_cnt.map { |hash| hash.keys }.flatten.uniq
    updated_vars.each do |var|
      if @update_cnt.count { |hash| hash.include?(var) } > 1
        if @update_cnt.map { |hash| hash[var] }.max == 1
          W(seqp.location, var.name)
        end
      end
    end
    @update_cnt = [Hash.new(0)]
  else
    @update_cnt.push(Hash.new(0))
  end
end
update_variable(*, var) click to toggle source
# File lib/adlint/exam/c_builtin/cc1_check.rb, line 13977
def update_variable(*, var)
  @update_cnt.last[var] += 1 if var.named?
end