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path: root/compilerplugins/clang/inlinefields.py
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#!/usr/bin/python

import sys
import re
import io

definitionToSourceLocationMap = dict() # dict of tuple(parentClass, fieldName) to sourceLocation
definitionSet = set()
excludedSet = set()
deletedInDestructorSet = set()
newedInConstructorSet = set();

# clang does not always use exactly the same numbers in the type-parameter vars it generates
# so I need to substitute them to ensure we can match correctly.
normalizeTypeParamsRegex = re.compile(r"type-parameter-\d+-\d+")
def normalizeTypeParams( line ):
    return normalizeTypeParamsRegex.sub("type-parameter-?-?", line)

# reading as binary (since we known it is pure ascii) is much faster than reading as unicode
with io.open("loplugin.inlinefields.log", "rb", buffering=1024*1024) as txt:
    for line in txt:
        tokens = line.strip().split("\t")
        if tokens[0] == "definition:":
            parentClass = normalizeTypeParams(tokens[1])
            fieldName = normalizeTypeParams(tokens[2])
            sourceLocation = tokens[3]
            fieldInfo = (parentClass, fieldName)
            definitionSet.add(fieldInfo)
            definitionToSourceLocationMap[fieldInfo] = sourceLocation
        elif tokens[0] == "excluded:":
            parentClass = normalizeTypeParams(tokens[1])
            fieldName = normalizeTypeParams(tokens[2])
            fieldInfo = (parentClass, fieldName)
            excludedSet.add(fieldInfo)
        elif tokens[0] == "deletedInDestructor:":
            parentClass = normalizeTypeParams(tokens[1])
            fieldName = normalizeTypeParams(tokens[2])
            fieldInfo = (parentClass, fieldName)
            deletedInDestructorSet.add(fieldInfo)
        elif tokens[0] == "newedInConstructor:":
            parentClass = normalizeTypeParams(tokens[1])
            fieldName = normalizeTypeParams(tokens[2])
            fieldInfo = (parentClass, fieldName)
            newedInConstructorSet.add(fieldInfo)
        else:
            print( "unknown line: " + line)

# Invert the definitionToSourceLocationMap
# If we see more than one method at the same sourceLocation, it's being autogenerated as part of a template
# and we should just ignore it
sourceLocationToDefinitionMap = {}
for k, v in definitionToSourceLocationMap.iteritems():
    sourceLocationToDefinitionMap[v] = sourceLocationToDefinitionMap.get(v, [])
    sourceLocationToDefinitionMap[v].append(k)
for k, definitions in sourceLocationToDefinitionMap.iteritems():
    if len(definitions) > 1:
        for d in definitions:
            definitionSet.remove(d)

tmp1list = list()
for d in definitionSet:
# TODO see comment in InlineFields::VisitCXXDeleteExpr
#    if d in excludedSet or d not in deletedInDestructorSet or d not in newedInConstructorSet:
    if d in excludedSet or d not in newedInConstructorSet:
        continue
    srcLoc = definitionToSourceLocationMap[d];
    tmp1list.append((d[0] + " " + d[1], srcLoc))

# sort results by filename:lineno
def natural_sort_key(s, _nsre=re.compile('([0-9]+)')):
    return [int(text) if text.isdigit() else text.lower()
            for text in re.split(_nsre, s)]
tmp1list.sort(key=lambda v: natural_sort_key(v[1]))

# print out the results
with open("loplugin.inlinefields.report", "wt") as f:
    for v in tmp1list:
        f.write(v[1] + "\n")
        f.write("    " + v[0] + "\n")