70 lines
2.7 KiB
Python
70 lines
2.7 KiB
Python
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#!/usr/bin/python
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import sys
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import re
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import io
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definitionToSourceLocationMap = dict() # dict of tuple(parentClass, fieldName) to sourceLocation
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fieldAssignDict = dict() # dict of tuple(parentClass, fieldName) to (set of values)
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# clang does not always use exactly the same numbers in the type-parameter vars it generates
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# so I need to substitute them to ensure we can match correctly.
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normalizeTypeParamsRegex = re.compile(r"type-parameter-\d+-\d+")
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def normalizeTypeParams( line ):
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return normalizeTypeParamsRegex.sub("type-parameter-?-?", line)
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# reading as binary (since we known it is pure ascii) is much faster than reading as unicode
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with io.open("singlevalfields.log", "rb", buffering=1024*1024) as txt:
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for line in txt:
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if line.startswith("defn:\t"):
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idx1 = line.find("\t")
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idx2 = line.find("\t",idx1+1)
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idx3 = line.find("\t",idx2+1)
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parentClass = normalizeTypeParams(line[idx1+1:idx2])
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fieldName = normalizeTypeParams(line[idx2+1:idx3])
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sourceLocation = line[idx3+1:].strip()
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fieldInfo = (parentClass, fieldName)
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definitionToSourceLocationMap[fieldInfo] = sourceLocation
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elif line.startswith("asgn:\t"):
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idx1 = line.find("\t")
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idx2 = line.find("\t",idx1+1)
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idx3 = line.find("\t",idx2+1)
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parentClass = normalizeTypeParams(line[idx1+1:idx2])
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fieldName = normalizeTypeParams(line[idx2+1:idx3])
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assignValue = line[idx3+1:].strip()
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fieldInfo = (parentClass, fieldName)
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if not fieldInfo in fieldAssignDict:
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fieldAssignDict[fieldInfo] = set()
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fieldAssignDict[fieldInfo].add(assignValue)
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tmp1list = list()
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for fieldInfo, assignValues in fieldAssignDict.iteritems():
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if len(assignValues) != 1:
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continue
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if "?" in assignValues:
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continue
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# if it contains anything other than this set, ignore it
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if len(assignValues - set(["0", "1", "-1", "nullptr"])) > 0:
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continue
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v0 = fieldInfo[0] + " " + fieldInfo[1]
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v1 = (",".join(assignValues))
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v2 = ""
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if fieldInfo in definitionToSourceLocationMap:
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v2 = definitionToSourceLocationMap[fieldInfo]
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tmp1list.append((v0,v1,v2))
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# sort results by filename:lineno
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def natural_sort_key(s, _nsre=re.compile('([0-9]+)')):
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return [int(text) if text.isdigit() else text.lower()
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for text in re.split(_nsre, s)]
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tmp1list.sort(key=lambda v: natural_sort_key(v[2]))
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# print out the results
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with open("loplugin.singlevalfields", "wt") as f:
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for v in tmp1list:
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f.write(v[2] + "\n")
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f.write(" " + v[0] + "\n")
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f.write(" " + v[1] + "\n")
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