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c375f811f6
There are likely to be post-processing scripts for DMD added in the future. In
anticipation, this patch tweaks DMD's output to be a little more conducive to
machine parsing.
The basic idea is this:
- Lines beginning with '#' are comments and can be ignored, as can blank lines.
- All top level blocks consist of a string ending with '{', and then one or
more indented lines, and then a closing '}' on its own line. Any multi-line
things within a block are themselves enclosed in braces.
The diff for memory/replace/dmd/test-expected.dmd shows what this looks like in
practice.
It's a long way from a formal grammar or anything like that, but that would be
overkill. In this form it's quite easy to parse with simple scripts that just
do line-based regexp matching, rather than proper parsing. And it's still very
readable to humans, so I think it's a reasonable balance overall.
--HG--
extra : rebase_source : 64085babd79de3cce13295aa5f16a34dc3ad7697
117 lines
3.4 KiB
Python
Executable File
117 lines
3.4 KiB
Python
Executable File
#! /usr/bin/python
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"""This script takes the file produced by DMD's test mode and checks its
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correctness.
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It produces the following output files: $TMP/test-{fixed,filtered,diff}.dmd.
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It runs the appropriate fix* script to get nice stack traces. It also
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filters out platform-specific details from the test output file.
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Note: you must run this from the same directory that you invoked DMD's test
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mode, otherwise the fix* script will not work properly, because some of the
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paths in the test output are relative.
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"""
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from __future__ import print_function
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import os
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import platform
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import re
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import subprocess
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import sys
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import tempfile
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def main():
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# Arguments
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if (len(sys.argv) != 3):
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print("usage:", sys.argv[0], "<topsrcdir> <test.dmd>")
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sys.exit(1)
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srcdir = sys.argv[1]
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# Filenames
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tempdir = tempfile.gettempdir()
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in_name = sys.argv[2]
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fixed_name = tempdir + os.sep + "test-fixed.dmd"
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filtered_name = tempdir + os.sep + "test-filtered.dmd"
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diff_name = tempdir + os.sep + "test-diff.dmd"
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expected_name = srcdir + os.sep + \
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"memory/replace/dmd/test-expected.dmd"
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# Fix stack traces
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print("fixing output to", fixed_name)
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sysname = platform.system()
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if sysname == "Linux":
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fix = srcdir + os.sep + "tools/rb/fix-linux-stack.pl"
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elif sysname == "Darwin":
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fix = srcdir + os.sep + "tools/rb/fix_macosx_stack.py"
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else:
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print("unhandled platform: " + sysname, file=sys.stderr)
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sys.exit(1)
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subprocess.call(fix, stdin=open(in_name, "r"),
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stdout=open(fixed_name, "w"))
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# Filter output
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# In heap block records we filter out most stack frames. The only thing
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# we leave behind is a "DMD.cpp" entry if we see one or more frames that
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# have DMD.cpp in them. There is simply too much variation to do anything
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# better than that.
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print("filtering output to", filtered_name)
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with open(fixed_name, "r") as fin, \
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open(filtered_name, "w") as fout:
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test_frame_re = re.compile(r".*(DMD.cpp)")
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for line in fin:
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if re.match(r" (Allocated at {|Reported( again)? at {)", line):
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# It's a heap block record.
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print(line, end='', file=fout)
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# Filter the stack trace -- print a single line if we see one
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# or more frames involving DMD.cpp.
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seen_DMD_frame = False
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for frame in fin:
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if re.match(r" ", frame):
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m = test_frame_re.match(frame)
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if m:
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seen_DMD_frame = True
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else:
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# We're past the stack trace.
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if seen_DMD_frame:
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print(" ... DMD.cpp", file=fout)
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print(frame, end='', file=fout)
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break
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else:
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# A line that needs no special handling. Copy it through.
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print(line, end='', file=fout)
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# Compare with expected output
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print("diffing output to", diff_name)
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ret = subprocess.call(["diff", "-u", expected_name, filtered_name],
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stdout=open(diff_name, "w"))
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if ret == 0:
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print("test PASSED")
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else:
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print("test FAILED (did you remember to run this script and Firefox "
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"in the same directory?)")
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if __name__ == "__main__":
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main()
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