summaryrefslogtreecommitdiffstats
path: root/compilerplugins/clang/unusedfields.py
blob: b0018de2168c0582a838aad22408886622851c24 (plain)
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
#!/usr/bin/python3

import sys
import re
import io

definitionSet = set()
protectedAndPublicDefinitionSet = set() # set of tuple(type, name)
definitionToSourceLocationMap = dict()
definitionToTypeMap = dict()
touchedFromInsideSet = set()
touchedFromOutsideSet = set()
touchedFromOutsideConstructorSet = set()
readFromSet = set()
writeToSet = set()
sourceLocationSet = 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)

def parseFieldInfo( tokens ):
    if len(tokens) == 3:
        return (normalizeTypeParams(tokens[1]), tokens[2])
    else:
        return (normalizeTypeParams(tokens[1]), "")

with io.open("workdir/loplugin.unusedfields.log", "r", buffering=1024*1024) as txt:
    for line in txt:
        tokens = line.strip().split("\t")
        if tokens[0] == "definition:":
            access = tokens[1]
            fieldInfo = (normalizeTypeParams(tokens[2]), tokens[3])
            srcLoc = tokens[5]
            # ignore external source code
            if (srcLoc.startswith("external/")):
                continue
            # ignore build folder
            if (srcLoc.startswith("workdir/")):
                continue
            definitionSet.add(fieldInfo)
            definitionToTypeMap[fieldInfo] = tokens[4]
            if access == "protected" or access == "public":
                protectedAndPublicDefinitionSet.add(fieldInfo)
            definitionToSourceLocationMap[fieldInfo] = tokens[5]
        elif tokens[0] == "inside:":
            touchedFromInsideSet.add(parseFieldInfo(tokens))
        elif tokens[0] == "outside:":
            touchedFromOutsideSet.add(parseFieldInfo(tokens))
        elif tokens[0] == "outside-constructor:":
            touchedFromOutsideConstructorSet.add(parseFieldInfo(tokens))
        elif tokens[0] == "read:":
            readFromSet.add(parseFieldInfo(tokens))
        elif tokens[0] == "write:":
            writeToSet.add(parseFieldInfo(tokens))
        else:
            print( "unknown line: " + line)

# Calculate untouched
untouchedSet = set()
untouchedSetD = set()
for d in definitionSet:
    if d in touchedFromOutsideSet or d in touchedFromInsideSet:
        continue
    srcLoc = definitionToSourceLocationMap[d];
    # this is all representations of on-disk data structures
    if (srcLoc.startswith("sc/source/filter/inc/scflt.hxx")
        or srcLoc.startswith("sw/source/filter/ww8/")
        or srcLoc.startswith("vcl/source/filter/sgvmain.hxx")
        or srcLoc.startswith("vcl/source/filter/sgfbram.hxx")
        or srcLoc.startswith("vcl/inc/unx/gtk/gloactiongroup.h")
        or srcLoc.startswith("include/svl/svdde.hxx")
        or srcLoc.startswith("lotuswordpro/source/filter/lwpsdwdrawheader.hxx")
        or srcLoc.startswith("hwpfilter/")
        or srcLoc.startswith("embeddedobj/source/inc/")
        or srcLoc.startswith("svtools/source/dialogs/insdlg.cxx")
        or srcLoc.startswith("bridges/")):
        continue
    if d[0] in set([ "AtkObjectWrapperClass", "AtkObjectWrapper", "GLOMenu", "GLOAction", "_XRegion", "SalMenuButtonItem", "Vertex",
            "OOoMountOperationClass", "SwCSS1ItemIds", "ScCompiler::AddInMap", "MemoryByteGrabber", "textcat_t", "fp_t", "ngram_t",
            "ImplPPTParaPropSet", "DataNode"]):
        continue
    # unit testing code
    if srcLoc.startswith("cppu/source/uno/check.cxx"):
        continue
    fieldType = definitionToTypeMap[d]
    if "ModuleClient" in fieldType:
        continue
    # leave the weld stuff alone until Caolan is finished
    if "weld::" in fieldType:
        continue
    if "::sfx2::sidebar::ControllerItem" in fieldType:
        continue
    untouchedSet.add((d[0] + " " + d[1] + " " + fieldType, srcLoc))
    untouchedSetD.add(d)

# Calculate only-touched-in-constructor set
onlyUsedInConstructorSet = set()
for d in definitionSet:
    if d in touchedFromOutsideSet or d in touchedFromOutsideConstructorSet:
        continue
    srcLoc = definitionToSourceLocationMap[d];
    # this is all representations of on-disk data structures
    if (srcLoc.startswith("sc/source/filter/inc/scflt.hxx")
        or srcLoc.startswith("sw/source/filter/ww8/")
        or srcLoc.startswith("vcl/source/filter/sgvmain.hxx")
        or srcLoc.startswith("vcl/source/filter/sgfbram.hxx")
        or srcLoc.startswith("vcl/inc/unx/gtk/gloactiongroup.h")
        or srcLoc.startswith("include/svl/svdde.hxx")
        or srcLoc.startswith("lotuswordpro/source/filter/lwpsdwdrawheader.hxx")
        or srcLoc.startswith("hwpfilter/")
        or srcLoc.startswith("embeddedobj/source/inc/")
        or srcLoc.startswith("svtools/source/dialogs/insdlg.cxx")
        or srcLoc.startswith("bridges/")):
        continue
    fieldType = definitionToTypeMap[d]
    if "std::unique_ptr" in fieldType:
        continue
    if "std::shared_ptr" in fieldType:
        continue
    if "Reference<" in fieldType:
        continue
    if "VclPtr<" in fieldType:
        continue
    # leave the weld stuff alone until Caolan is finished
    if "weld::" in fieldType:
        continue
    if "osl::Mutex" in fieldType:
        continue
    if "::sfx2::sidebar::ControllerItem" in fieldType:
        continue
    onlyUsedInConstructorSet.add((d[0] + " " + d[1] + " " + fieldType, srcLoc))

writeonlySet = set()
for d in definitionSet:
    parentClazz = d[0];
    if d in readFromSet or d in untouchedSetD:
        continue
    srcLoc = definitionToSourceLocationMap[d];
    # this is all representations of on-disk data structures
    if (srcLoc.startswith("sc/source/filter/inc/scflt.hxx")
        or srcLoc.startswith("sw/source/filter/ww8/")
        or srcLoc.startswith("vcl/source/filter/sgvmain.hxx")
        or srcLoc.startswith("vcl/source/filter/sgfbram.hxx")
        or srcLoc.startswith("vcl/inc/unx/gtk/gloactiongroup.h")
        or srcLoc.startswith("include/svl/svdde.hxx")
        or srcLoc.startswith("lotuswordpro/source/filter/lwpsdwdrawheader.hxx")
        or srcLoc.startswith("svtools/source/dialogs/insdlg.cxx")):
        continue
    fieldType = definitionToTypeMap[d]
    if "ModuleClient" in fieldType:
        continue
    if "::sfx2::sidebar::ControllerItem" in fieldType:
        continue
    # ignore reference fields, because writing to them actually writes to another field somewhere else
    if fieldType.endswith("&"):
        continue
    # ignore the import/export data model stuff
    if srcLoc.startswith("sc/source/filter/inc/") and "Model" in fieldType:
        continue
    if srcLoc.startswith("sc/source/filter/inc/") and (parentClazz.startswith("Xcl") or parentClazz.startswith("oox::xls::")):
        continue
    # implement some kind of registration of errors
    if fieldType == "class SfxErrorHandler *":
        continue
    # mutex locking
    if "Guard" in fieldType:
        continue
    # leave the weld stuff alone until Caolan is finished
    if "weld::" in fieldType:
        continue
    # these are just all model classes
    if (srcLoc.startswith("oox/")
        or srcLoc.startswith("lotuswordpro/")
        or srcLoc.startswith("include/oox/")
        or srcLoc.startswith("include/filter/")
        or srcLoc.startswith("hwpfilter/")
        or srcLoc.startswith("filter/")
        or srcLoc.startswith("vcl/source/filter/")):
        continue

    writeonlySet.add((d[0] + " " + d[1] + " " + definitionToTypeMap[d], srcLoc))


readonlySet = set()
for d in definitionSet:
    parentClazz = d[0];
    if d in writeToSet or d in untouchedSetD:
        continue
    fieldType = definitionToTypeMap[d]
    srcLoc = definitionToSourceLocationMap[d];
    if "ModuleClient" in fieldType:
        continue
    # this is all representations of on-disk data structures
    if (srcLoc.startswith("sc/source/filter/inc/scflt.hxx")
        or srcLoc.startswith("sw/source/filter/ww8/")
        or srcLoc.startswith("vcl/source/filter/sgvmain.hxx")
        or srcLoc.startswith("vcl/source/filter/sgfbram.hxx")
        or srcLoc.startswith("vcl/inc/unx/gtk/gloactiongroup.h")
        or srcLoc.startswith("include/svl/svdde.hxx")):
        continue
    # I really don't care about these ancient file formats
    if (srcLoc.startswith("hwpfilter/")
        or srcLoc.startswith("lotuswordpro/")):
        continue
    # leave the weld stuff alone until Caolan is finished
    if "weld::" in fieldType:
        continue
    readonlySet.add((d[0] + " " + d[1] + " " + definitionToTypeMap[d], srcLoc))


canBePrivateSet = set()
for d in protectedAndPublicDefinitionSet:
    clazz = d[0] + " " + d[1]
    if d in touchedFromOutsideSet:
        continue
    srcLoc = definitionToSourceLocationMap[d];

    canBePrivateSet.add((clazz + " " + definitionToTypeMap[d], srcLoc))


# --------------------------------------------------------------------------------------------
# "all fields in class can be made private" analysis
# --------------------------------------------------------------------------------------------

potentialClasses = set()
excludedClasses = set()
potentialClassesSourceLocationMap = dict()
matchClassName = re.compile(r"(\w+)::")
for d in protectedAndPublicDefinitionSet:
    clazz = d[0]
    if d in touchedFromOutsideSet:
        excludedClasses.add(clazz)
    else:
        potentialClasses.add(clazz)
        potentialClassesSourceLocationMap[clazz] = definitionToSourceLocationMap[d]
allFieldsCanBePrivateSet = set()
for d in (potentialClasses - excludedClasses):
    sourceLoc = potentialClassesSourceLocationMap[d]
    # when the class is inside a compile unit, assume that the compiler can figure this out for itself, much less interesting to me
    if not ".cxx" in sourceLoc:
        allFieldsCanBePrivateSet.add((d, sourceLoc))

# sort the results using a "natural order" so sequences like [item1,item2,item10] sort nicely
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)]
# sort by both the source-line and the datatype, so the output file ordering is stable
# when we have multiple items on the same source line
def v_sort_key(v):
    return natural_sort_key(v[1]) + [v[0]]

# sort results by name and line number
tmp1list = sorted(untouchedSet, key=lambda v: v_sort_key(v))
tmp2list = sorted(writeonlySet, key=lambda v: v_sort_key(v))
tmp3list = sorted(canBePrivateSet, key=lambda v: v_sort_key(v))
tmp4list = sorted(readonlySet, key=lambda v: v_sort_key(v))
tmp5list = sorted(onlyUsedInConstructorSet, key=lambda v: v_sort_key(v))
tmp6list = sorted(allFieldsCanBePrivateSet, key=lambda v: v_sort_key(v))

# print out the results
with open("compilerplugins/clang/unusedfields.untouched.results", "wt") as f:
    for t in tmp1list:
        f.write( t[1] + "\n" )
        f.write( "    " + t[0] + "\n" )
with open("compilerplugins/clang/unusedfields.writeonly.results", "wt") as f:
    for t in tmp2list:
        f.write( t[1] + "\n" )
        f.write( "    " + t[0] + "\n" )
# this one is not checked in yet because I haven't actually done anything with it
with open("loplugin.unusedfields.report-can-be-private", "wt") as f:
    for t in tmp3list:
        f.write( t[1] + "\n" )
        f.write( "    " + t[0] + "\n" )
with open("compilerplugins/clang/unusedfields.readonly.results", "wt") as f:
    for t in tmp4list:
        f.write( t[1] + "\n" )
        f.write( "    " + t[0] + "\n" )
with open("compilerplugins/clang/unusedfields.only-used-in-constructor.results", "wt") as f:
    for t in tmp5list:
        f.write( t[1] + "\n" )
        f.write( "    " + t[0] + "\n" )
with open("compilerplugins/clang/unusedfields.report-all-can-be-private", "wt") as f:
    for t in tmp6list:
        f.write( t[1] + "\n" )
        f.write( "    " + t[0] + "\n" )