Command
Implements debugger “break” command.
# File cli/ruby-debug/commands/breakpoints.rb, line 16 def execute if @match[1] line, _, _, expr = @match.captures else _, file, line, expr = @match.captures end if expr if expr !~ /^\s*if\s+(.+)/ if file or line errmsg "Expecting 'if' in breakpoint condition; got: #{expr}.\n" else errmsg "Invalid breakpoint location: #{expr}.\n" end return else expr = $1 end end brkpt_filename = nil if file.nil? unless @state.context errmsg "We are not in a state that has an associated file.\n" return end brkpt_filename = @state.file file = File.basename(@state.file) if line.nil? # Set breakpoint at current line line = @state.line.to_s end elsif line !~ /^\d+$/ # See if "line" is a method/function name klass = debug_silent_eval(file) if klass && klass.kind_of?(Module) class_name = klass.name if klass else errmsg "Unknown class #{file}.\n" throw :debug_error end else # FIXME: This should be done in LineCache. file = File.expand_path(file) if file.index(File::SEPARATOR) || File::ALT_SEPARATOR && file.index(File::ALT_SEPARATOR) brkpt_filename = file end if line =~ /^\d+$/ line = line.to_i if LineCache.cache(brkpt_filename, Command.settings[:reload_source_on_change]) last_line = LineCache.size(brkpt_filename) if line > last_line errmsg("There are only %d lines in file \"%s\".\n", last_line, CommandProcessor.canonic_file(file)) return end unless LineCache.trace_line_numbers(brkpt_filename).member?(line) errmsg("Line %d is not a stopping point in file \"%s\".\n", line, CommandProcessor.canonic_file(file)) return end else errmsg("No source file named %s\n" % file) return unless confirm("Set breakpoint anyway? (y/n) ") end unless @state.context errmsg "We are not in a state we can add breakpoints.\n" return end brkpt_filename = File.basename(brkpt_filename) if Command.settings[:basename] b = Debugger.add_breakpoint brkpt_filename, line, expr print "Breakpoint %d file %s, line %s\n", b.id, brkpt_filename, line.to_s unless syntax_valid?(expr) errmsg("Expression \"#{expr}\" syntactically incorrect; breakpoint disabled.\n") b.enabled = false end else method = line.intern.id2name b = Debugger.add_breakpoint class_name, method, expr print "Breakpoint %d at %s::%s\n", b.id, class_name, method.to_s end end
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