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Contents
#!/usr/bin/env ruby
# $Id$
module TraceLineNumbers
# Return an array of lines numbers that could be
# stopped at given a file name of a Ruby program.
def self.lnums_for_str src
name = "#{Time.new.to_i}_#{rand(2**31)}"
iseq = RubyVM::InstructionSequence.compile(src, name)
lines = {}
iseq.disasm.each_line{|line|
if /^\d+ (\w+)\s+.+\(\s*(\d+)\)$/ =~ line
insn = $1
lineno = $2.to_i
next unless insn == 'trace'
lines[lineno] = true
# p [lineno, line]
end
}
lines.keys
end
def lnums_for_file(file)
lnums_for_str(File.read(file))
end
module_function :lnums_for_file
# Return an array of lines numbers that could be
# stopped at given a file name of a Ruby program.
# We assume the each line has \n at the end. If not
# set the newline parameters to \n.
def lnums_for_str_array(string_array, newline='')
lnums_for_str(string_array.join(newline))
end
module_function :lnums_for_str_array
end
if __FILE__ == $0
SCRIPT_LINES__ = {} unless defined? SCRIPT_LINES__
# test_file = '../test/rcov-bug.rb'
test_file = '../test/lnum-data/begin1.rb'
if File.exists?(test_file)
puts TraceLineNumbers.lnums_for_file(test_file).inspect
load(test_file, 0) # for later
end
puts TraceLineNumbers.lnums_for_file(__FILE__).inspect
unless SCRIPT_LINES__.empty?
key = SCRIPT_LINES__.keys.first
puts key
puts SCRIPT_LINES__[key]
puts TraceLineNumbers.lnums_for_str_array(SCRIPT_LINES__[key]).inspect
end
end
Version data entries
7 entries across 6 versions & 4 rubygems