1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
|
require 'test/unit'
require 'tempfile'
class TestISeq < Test::Unit::TestCase
ISeq = RubyVM::InstructionSequence
def test_no_linenum
bug5894 = '[ruby-dev:45130]'
assert_normal_exit('p RubyVM::InstructionSequence.compile("1", "mac", "", 0).to_a', bug5894)
end
def compile(src, line = nil, opt = nil)
EnvUtil.suppress_warning do
ISeq.new(src, __FILE__, __FILE__, line, opt)
end
end
def lines src
body = compile(src).to_a[13]
body.find_all{|e| e.kind_of? Integer}
end
def test_allocate
assert_raise(TypeError) {ISeq.allocate}
end
def test_to_a_lines
src = <<-EOS
p __LINE__ # 1
p __LINE__ # 2
# 3
p __LINE__ # 4
EOS
assert_equal [1, 2, 4], lines(src)
src = <<-EOS
# 1
p __LINE__ # 2
# 3
p __LINE__ # 4
# 5
EOS
assert_equal [2, 4], lines(src)
src = <<-EOS
1 # should be optimized out
2 # should be optimized out
p __LINE__ # 3
p __LINE__ # 4
5 # should be optimized out
6 # should be optimized out
p __LINE__ # 7
8 # should be optimized out
9
EOS
assert_equal [3, 4, 7, 9], lines(src)
end
def test_unsupport_type
ary = compile("p").to_a
ary[9] = :foobar
assert_raise_with_message(TypeError, /:foobar/) {ISeq.load(ary)}
end if defined?(RubyVM::InstructionSequence.load)
def test_loaded_cdhash_mark
iseq = compile(<<-'end;', __LINE__+1)
def bug(kw)
case kw
when "false" then false
when "true" then true
when "nil" then nil
else raise("unhandled argument: #{kw.inspect}")
end
end
end;
assert_separately([], <<-"end;")
iseq = #{iseq.to_a.inspect}
RubyVM::InstructionSequence.load(iseq).eval
assert_equal(false, bug("false"))
GC.start
assert_equal(false, bug("false"))
end;
end if defined?(RubyVM::InstructionSequence.load)
def test_disasm_encoding
src = "\u{3042} = 1; \u{3042}; \u{3043}"
asm = compile(src).disasm
assert_equal(src.encoding, asm.encoding)
assert_predicate(asm, :valid_encoding?)
src.encode!(Encoding::Shift_JIS)
asm = compile(src).disasm
assert_equal(src.encoding, asm.encoding)
assert_predicate(asm, :valid_encoding?)
obj = Object.new
name = "\u{2603 26a1}"
obj.instance_eval("def #{name}; tap {}; end")
assert_include(RubyVM::InstructionSequence.of(obj.method(name)).disasm, name)
end
LINE_BEFORE_METHOD = __LINE__
def method_test_line_trace
_a = 1
_b = 2
end
def test_line_trace
iseq = compile \
%q{ a = 1
b = 2
c = 3
# d = 4
e = 5
# f = 6
g = 7
}
assert_equal([1, 2, 3, 5, 7], iseq.line_trace_all)
iseq.line_trace_specify(1, true) # line 2
iseq.line_trace_specify(3, true) # line 5
result = []
TracePoint.new(:specified_line){|tp|
result << tp.lineno
}.enable{
iseq.eval
}
assert_equal([2, 5], result)
iseq = ISeq.of(self.class.instance_method(:method_test_line_trace))
assert_equal([LINE_BEFORE_METHOD + 3, LINE_BEFORE_METHOD + 5], iseq.line_trace_all)
end if false # TODO: now, it is only for C APIs.
LINE_OF_HERE = __LINE__
def test_location
iseq = ISeq.of(method(:test_location))
assert_equal(__FILE__, iseq.path)
assert_match(/#{__FILE__}/, iseq.absolute_path)
assert_equal("test_location", iseq.label)
assert_equal("test_location", iseq.base_label)
assert_equal(LINE_OF_HERE+1, iseq.first_lineno)
line = __LINE__
iseq = ISeq.of(Proc.new{})
assert_equal(__FILE__, iseq.path)
assert_match(/#{__FILE__}/, iseq.absolute_path)
assert_equal("test_location", iseq.base_label)
assert_equal("block in test_location", iseq.label)
assert_equal(line+1, iseq.first_lineno)
end
def test_label_fstring
c = Class.new{ def foobar() end }
a, b = eval("# encoding: us-ascii\n'foobar'.freeze"),
ISeq.of(c.instance_method(:foobar)).label
assert_same a, b
end
def test_disable_opt
src = "a['foo'] = a['bar']; 'a'.freeze"
body= compile(src, __LINE__, false).to_a[13]
body.each{|insn|
next unless Array === insn
op = insn.first
assert(!op.to_s.match(/^opt_/), "#{op}")
}
end
def test_invalid_source
bug11159 = '[ruby-core:69219] [Bug #11159]'
assert_raise(TypeError, bug11159) {compile(nil)}
assert_raise(TypeError, bug11159) {compile(:foo)}
assert_raise(TypeError, bug11159) {compile(1)}
end
def test_frozen_string_literal_compile_option
$f = 'f'
line = __LINE__ + 2
code = <<-'EOS'
['foo', 'foo', "#{$f}foo", "#{'foo'}"]
EOS
s1, s2, s3, s4 = compile(code, line, {frozen_string_literal: true}).eval
assert_predicate(s1, :frozen?)
assert_predicate(s2, :frozen?)
assert_predicate(s3, :frozen?)
assert_predicate(s4, :frozen?)
end
# Safe call chain is not optimized when Coverage is running.
# So we can test it only when Coverage is not running.
def test_safe_call_chain
src = "a&.a&.a&.a&.a&.a"
body = compile(src, __LINE__, {peephole_optimization: true}).to_a[13]
labels = body.select {|op, arg| op == :branchnil}.map {|op, arg| arg}
assert_equal(1, labels.uniq.size)
end if (!defined?(Coverage) || !Coverage.running?)
def test_parent_iseq_mark
assert_separately([], <<-'end;', timeout: 20)
->{
->{
->{
eval <<-EOS
class Segfault
define_method :segfault do
x = nil
GC.disable
1000.times do |n|
n.times do
x = (foo rescue $!).local_variables
end
GC.start
end
x
end
end
EOS
}.call
}.call
}.call
at_exit { assert_equal([:n, :x], Segfault.new.segfault.sort) }
end;
end
def test_syntax_error_message
feature11951 = '[Feature #11951]'
src, line = <<-'end;', __LINE__+1
def x@;end
def y@;end
end;
e1 = e2 = nil
m1 = EnvUtil.verbose_warning do
e1 = assert_raise(SyntaxError) do
eval(src, nil, __FILE__, line)
end
end
m2 = EnvUtil.verbose_warning do
e2 = assert_raise(SyntaxError) do
ISeq.new(src, __FILE__, __FILE__, line)
end
end
assert_equal([m1, e1.message], [m2, e2.message], feature11951)
e1, e2 = e1.message.lines
assert_send([e1, :start_with?, __FILE__])
assert_send([e2, :start_with?, __FILE__])
end
def test_compile_file_error
Tempfile.create(%w"test_iseq .rb") do |f|
f.puts "end"
f.close
path = f.path
assert_in_out_err(%W[- #{path}], "#{<<-"begin;"}\n#{<<-"end;"}", /keyword_end/, [], success: true)
begin;
path = ARGV[0]
begin
RubyVM::InstructionSequence.compile_file(path)
rescue SyntaxError => e
puts e.message
end
end;
end
end
def test_translate_by_object
assert_separately([], <<-"end;")
class Object
def translate
end
end
assert_equal(0, eval("0"))
end;
end
def test_inspect
%W[foo \u{30d1 30b9}].each do |name|
assert_match /@#{name}/, ISeq.compile("", name).inspect, name
m = ISeq.compile("class TestISeq::Inspect; def #{name}; end; instance_method(:#{name}); end").eval
assert_match /:#{name}@/, ISeq.of(m).inspect, name
end
end
def sample_iseq
ISeq.compile <<-EOS.gsub(/^.*?: /, "")
1: class C
2: def foo
3: begin
4: rescue
5: p :rescue
6: ensure
7: p :ensure
8: end
9: end
10: def bar
11: 1.times{
12: 2.times{
13: }
14: }
15: end
16: end
17: class D < C
18: end
EOS
end
def test_each_child
iseq = sample_iseq
collect_iseq = lambda{|iseq|
iseqs = []
iseq.each_child{|child_iseq|
iseqs << collect_iseq.call(child_iseq)
}
["#{iseq.label}@#{iseq.first_lineno}", *iseqs.sort_by{|k, *| k}]
}
expected = ["<compiled>@1",
["<class:C>@1",
["bar@10", ["block in bar@11",
["block (2 levels) in bar@12"]]],
["foo@2", ["ensure in foo@2"],
["rescue in foo@4"]]],
["<class:D>@17"]]
assert_equal expected, collect_iseq.call(iseq)
end
def test_trace_points
collect_iseq = lambda{|iseq|
iseqs = []
iseq.each_child{|child_iseq|
iseqs << collect_iseq.call(child_iseq)
}
[["#{iseq.label}@#{iseq.first_lineno}", iseq.trace_points], *iseqs.sort_by{|k, *| k}]
}
assert_equal [["<compiled>@1", [[1, :line],
[17, :line]]],
[["<class:C>@1", [[1, :class],
[2, :line],
[10, :line],
[16, :end]]],
[["bar@10", [[10, :call],
[11, :line],
[15, :return]]],
[["block in bar@11", [[11, :b_call],
[12, :line],
[14, :b_return]]],
[["block (2 levels) in bar@12", [[12, :b_call],
[13, :b_return]]]]]],
[["foo@2", [[2, :call],
[4, :line],
[7, :line],
[9, :return]]],
[["ensure in foo@2", [[7, :line]]]],
[["rescue in foo@4", [[5, :line]]]]]],
[["<class:D>@17", [[17, :class],
[18, :end]]]]], collect_iseq.call(sample_iseq)
end
def test_empty_iseq_lineno
iseq = ISeq.compile(<<-EOS)
# 1
# 2
def foo # line 3 empty method
end # line 4
1.time do # line 5 empty block
end # line 6
class C # line 7 empty class
end
EOS
iseq.each_child{|ci|
ary = ci.to_a
type = ary[9]
name = ary[5]
line = ary[13].first
case ary[9]
when :method
assert_equal "foo", name
assert_equal 3, line
when :class
assert_equal '<class:C>', name
assert_equal 7, line
when :block
assert_equal 'block in <compiled>', name
assert_equal 5, line
else
raise "unknown ary: " + ary.inspect
end
}
end
def test_to_binary_with_objects
skip "does not work on other than x86" unless /x(?:86|64)|i\d86/ =~ RUBY_PLATFORM
code = "[]"+100.times.map{|i|"<</#{i}/"}.join
iseq = RubyVM::InstructionSequence.compile(code)
bin = assert_nothing_raised do
iseq.to_binary
rescue RuntimeError => e
skip e.message if /compile with coverage/ =~ e.message
raise
end
iseq2 = RubyVM::InstructionSequence.load_from_binary(bin)
skip "trace events does not load correctly since r62851"
assert_equal(iseq.to_a, iseq2.to_a)
end
end
|