# File lib/tracer.rb, line 150
150:   def Tracer.add_filter(p = proc)
151:     Single.add_filter(p)
152:   end

    # File lib/tracer.rb, line 37
37:   def initialize
38:     @threads = Hash.new
39:     if defined? Thread.main
40:       @threads[Thread.main.object_id] = 0
41:     else
42:       @threads[Thread.current.object_id] = 0
43:     end
44: 
45:     @get_line_procs = {}
46: 
47:     @filters = []
48:   end

     # File lib/tracer.rb, line 142
142:   def Tracer.off
143:     Single.off
144:   end

     # File lib/tracer.rb, line 134
134:   def Tracer.on
135:     if block_given?
136:       Single.on{yield}
137:     else
138:       Single.on
139:     end
140:   end

     # File lib/tracer.rb, line 146
146:   def Tracer.set_get_line_procs(file_name, p = proc)
147:     Single.set_get_line_procs(file_name, p)
148:   end

    # File lib/debug.rb, line 14
14:   def Tracer.trace_func(*vars)
15:     Single.trace_func(*vars)
16:   end

    # File lib/tracer.rb, line 73
73:   def add_filter(p = proc)
74:     @filters.push p
75:   end

     # File lib/tracer.rb, line 81
 81:   def get_line(file, line)
 82:     if p = @get_line_procs[file]
 83:       return p.call(line)
 84:     end
 85: 
 86:     unless list = SCRIPT_LINES__[file]
 87:       begin
 88:         f = open(file)
 89:         begin 
 90:           SCRIPT_LINES__[file] = list = f.readlines
 91:         ensure
 92:           f.close
 93:         end
 94:       rescue
 95:         SCRIPT_LINES__[file] = list = []
 96:       end
 97:     end
 98: 
 99:     if l = list[line - 1]
100:       l
101:     else
102:       "-\n"
103:     end
104:   end

     # File lib/tracer.rb, line 106
106:   def get_thread_no
107:     if no = @threads[Thread.current.object_id]
108:       no
109:     else
110:       @threads[Thread.current.object_id] = @threads.size
111:     end
112:   end

    # File lib/tracer.rb, line 68
68:   def off
69:     set_trace_func nil
70:     stdout.print "Trace off\n" if Tracer.verbose?
71:   end

    # File lib/tracer.rb, line 54
54:   def on
55:     if block_given?
56:       on
57:       begin
58:         yield
59:       ensure
60:         off
61:       end
62:     else
63:       set_trace_func method(:trace_func).to_proc
64:       stdout.print "Trace on\n" if Tracer.verbose?
65:     end
66:   end

    # File lib/tracer.rb, line 77
77:   def set_get_line_procs(file, p = proc)
78:     @get_line_procs[file] = p
79:   end

    # File lib/tracer.rb, line 50
50:   def stdout
51:     Tracer.stdout
52:   end

     # File lib/tracer.rb, line 114
114:   def trace_func(event, file, line, id, binding, klass, *)
115:     return if file == __FILE__
116:     
117:     for p in @filters
118:       return unless p.call event, file, line, id, binding, klass
119:     end
120:     
121:     saved_crit = Thread.critical
122:     Thread.critical = true
123:     stdout.printf("#%d:%s:%d:%s:%s: %s",
124:       get_thread_no,
125:       file,
126:       line,
127:       klass || '',
128:       EVENT_SYMBOL[event],
129:       get_line(file, line))
130:     Thread.critical = saved_crit
131:   end