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#include <qregexp.h>
00061
#include <qmap.h>
00062
#include <qvariant.h>
00063
#include <kdebug.h>
00064
00065
00066
00067
00068
00069
00070
00071
00072
00073 static const int SmallRoof = 40;
00074 static const int BigRoof = 400;
00075
00076
00077
00078
00079
00080
00081
00082
00083
00084
00085
00086
00087
00088 static int ppHardwareTabSize = 8;
00089 static int ppIndentSize = 4;
00090 static int ppContinuationIndentSize = 8;
00091 static int ppCommentOffset = 2;
00092
00093 static QRegExp *
literal = 0;
00094 static QRegExp *
label = 0;
00095 static QRegExp *
inlineCComment = 0;
00096 static QRegExp *
braceX = 0;
00097 static QRegExp *
iflikeKeyword = 0;
00098
00099
00100 void configureCIndent(
const QMap<QString, QVariant>& values )
00101 {
00102
if( values.contains(
"TabSize") )
00103
ppHardwareTabSize = values[
"TabSize" ].toInt();
00104
00105
if( values.contains(
"IndentSize") )
00106
ppIndentSize = values[
"IndentSize" ].toInt();
00107
00108
if( values.contains(
"ContinuationSize") )
00109
ppContinuationIndentSize = values[
"ContinuationSize" ].toInt();
00110
00111
if( values.contains(
"CommentOffset") )
00112
ppCommentOffset = values[
"CommentOffset" ].toInt();
00113 }
00114
00115
00116
00117
00118
00119 static QChar firstNonWhiteSpace(
const QString& t )
00120 {
00121
int i = 0;
00122
while ( i < (
int) t.length() ) {
00123
if ( !t[i].isSpace() )
00124
return t[i];
00125 i++;
00126 }
00127
return QChar::null;
00128 }
00129
00130
00131
00132
00133
00134 static bool isOnlyWhiteSpace(
const QString& t )
00135 {
00136
return firstNonWhiteSpace( t ).isNull();
00137 }
00138
00139
00140
00141
00142
00143
00144 static int columnForIndex(
const QString& t,
int index )
00145 {
00146
int col = 0;
00147
if ( index > (
int) t.length() )
00148 index = t.length();
00149
00150
for (
int i = 0; i < index; i++ ) {
00151
if ( t[i].latin1() ==
'\t' ) {
00152 col = ( (col /
ppHardwareTabSize) + 1 ) *
ppHardwareTabSize;
00153 }
else {
00154 col++;
00155 }
00156 }
00157
return col;
00158 }
00159
00160
00161
00162
00163 static int indentOfLine(
const QString& t )
00164 {
00165
return columnForIndex( t, t.find(
firstNonWhiteSpace(t)) );
00166 }
00167
00168
00169
00170
00171
00172
00173
00174 static inline void eraseChar(
QString& t,
int k,
QChar ch )
00175 {
00176
if ( t[k] !=
'\t' )
00177 t[k] = ch;
00178 }
00179
00180
00181
00182
00183
00184 static QString trimmedCodeLine(
const QString& t )
00185 {
00186
QString trimmed = t;
00187
int k;
00188
00189
00190
00191
00192
00193
00194
00195
00196 k = 0;
00197
while ( (k = trimmed.find(*
literal, k)) != -1 ) {
00198
for (
int i = 0; i <
literal->matchedLength(); i++ )
00199
eraseChar( trimmed, k + i,
QChar(
'X') );
00200 k +=
literal->matchedLength();
00201 }
00202
00203
00204
00205
00206
00207 k = 0;
00208
while ( (k = trimmed.find(*
inlineCComment, k)) != -1 ) {
00209
for (
int i = 0; i <
inlineCComment->matchedLength(); i++ )
00210
eraseChar( trimmed, k + i,
QChar(
' ') );
00211 k +=
inlineCComment->matchedLength();
00212 }
00213
00214
00215
00216
00217
00218
00219
00220
00221
while ( trimmed.findRev(
QChar(
':')) != -1 && trimmed.find(*
label) != -1 ) {
00222
QString cap1 =
label->cap( 1 );
00223
int pos1 =
label->pos( 1 );
00224
for (
int i = 0; i < (
int) cap1.length(); i++ )
00225
eraseChar( trimmed, pos1 + i,
QChar(
' ') );
00226 }
00227
00228
00229
00230
00231 k = trimmed.find(
QString(
"//") );
00232
if ( k != -1 )
00233 trimmed.truncate( k );
00234
00235
return trimmed;
00236 }
00237
00238
00239
00240
00241
00242 static inline QChar lastParen(
const QString& t )
00243 {
00244
int i = t.length();
00245
while ( i > 0 ) {
00246 i--;
00247
if ( t[i] ==
QChar(
'(') || t[i] == QChar(
')') )
00248
return t[i];
00249 }
00250
return QChar::null;
00251 }
00252
00253
00254
00255
00256
00257 static inline bool okay(
QChar typedIn,
QChar okayCh )
00258 {
00259
return typedIn.isNull() || typedIn == okayCh;
00260 }
00261
00262
00263
00264
00265
00266
00267
00268
00269
00270 struct LinizerState
00271 {
00272 QString line;
00273 int braceDepth;
00274 bool leftBraceFollows;
00275
00276 QStringList::ConstIterator
iter;
00277 bool inCComment;
00278 bool pendingRightBrace;
00279 };
00280
00281 static QStringList *
yyProgram = 0;
00282 static LinizerState *
yyLinizerState = 0;
00283
00284
00285 static const QString *
yyLine = 0;
00286 static const int *
yyBraceDepth = 0;
00287 static const bool *
yyLeftBraceFollows = 0;
00288
00289
00290
00291
00292
00293 #define YY_SAVE() \
00294
LinizerState savedState = *yyLinizerState
00295 #define YY_RESTORE() \
00296
*yyLinizerState = savedState
00297
00298
00299
00300
00301
00302
00303 static bool readLine()
00304 {
00305
int k;
00306
00307
yyLinizerState->
leftBraceFollows =
00308 (
firstNonWhiteSpace(
yyLinizerState->
line) ==
QChar(
'{') );
00309
00310
do {
00311
if (
yyLinizerState->
iter ==
yyProgram->begin() ) {
00312
yyLinizerState->
line = QString::null;
00313
return FALSE;
00314 }
00315
00316 --
yyLinizerState->
iter;
00317
yyLinizerState->
line = *
yyLinizerState->
iter;
00318
00319
yyLinizerState->
line =
trimmedCodeLine(
yyLinizerState->
line );
00320
00321
00322
00323
00324
00325
00326
00327
00328
00329
00330
00331
if (
yyLinizerState->
inCComment ) {
00332
QString slashAster(
"/*" );
00333
00334 k =
yyLinizerState->
line.find( slashAster );
00335
if ( k == -1 ) {
00336
yyLinizerState->
line = QString::null;
00337 }
else {
00338
yyLinizerState->
line.truncate( k );
00339
yyLinizerState->
inCComment = FALSE;
00340 }
00341 }
00342
00343
if ( !
yyLinizerState->
inCComment ) {
00344
QString asterSlash(
"*/" );
00345
00346 k =
yyLinizerState->
line.find( asterSlash );
00347
if ( k != -1 ) {
00348
for (
int i = 0; i < k + 2; i++ )
00349
eraseChar(
yyLinizerState->
line, i,
QChar(
' ') );
00350
yyLinizerState->
inCComment = TRUE;
00351 }
00352 }
00353
00354
00355
00356
00357 k = 0;
00358
while ( k < (
int)
yyLinizerState->
line.length() ) {
00359
QChar ch =
yyLinizerState->
line[k];
00360
if ( ch ==
QChar(
'#') ) {
00361
yyLinizerState->
line = QString::null;
00362 }
else if ( !ch.isSpace() ) {
00363
break;
00364 }
00365 k++;
00366 }
00367
00368
00369
00370
00371 k =
yyLinizerState->
line.length();
00372
while ( k > 0 &&
yyLinizerState->
line[k - 1].isSpace() )
00373 k--;
00374
yyLinizerState->
line.truncate( k );
00375
00376
00377
00378
00379
00380
yyLinizerState->
braceDepth +=
00381
yyLinizerState->
line.contains(
QChar(
'}') ) -
00382
yyLinizerState->
line.contains(
QChar(
'{') );
00383
00384
00385
00386
00387
00388
00389
00390
00391
00392
00393
00394
00395
if (
yyLinizerState->
pendingRightBrace )
00396
yyLinizerState->
braceDepth++;
00397
yyLinizerState->
pendingRightBrace =
00398 (
yyLinizerState->
line.find(*
braceX) == 0 );
00399
if (
yyLinizerState->
pendingRightBrace )
00400
yyLinizerState->
braceDepth--;
00401 }
while (
yyLinizerState->
line.isEmpty() );
00402
00403
return TRUE;
00404 }
00405
00406
00407
00408
00409
00410 static void startLinizer()
00411 {
00412
yyLinizerState->
braceDepth = 0;
00413
yyLinizerState->
inCComment = FALSE;
00414
yyLinizerState->
pendingRightBrace = FALSE;
00415
00416
yyLine = &
yyLinizerState->
line;
00417
yyBraceDepth = &
yyLinizerState->
braceDepth;
00418
yyLeftBraceFollows = &
yyLinizerState->
leftBraceFollows;
00419
00420
yyLinizerState->
iter =
yyProgram->end();
00421 --
yyLinizerState->
iter;
00422
yyLinizerState->
line = *
yyLinizerState->
iter;
00423
readLine();
00424 }
00425
00426
00427
00428
00429
00430
00431 static bool bottomLineStartsInCComment()
00432 {
00433
QString slashAster(
"/*" );
00434
QString asterSlash(
"*/" );
00435
00436
00437
00438
00439
00440 QStringList::ConstIterator p =
yyProgram->end();
00441 --p;
00442
00443
for (
int i = 0; i <
BigRoof; i++ ) {
00444
if ( p ==
yyProgram->begin() )
00445
return FALSE;
00446 --p;
00447
00448
if ( (*p).find(slashAster) != -1 ||
00449 (*p).find(asterSlash) != -1 ) {
00450
QString trimmed =
trimmedCodeLine( *p );
00451
00452
if ( trimmed.find(slashAster) != -1 ) {
00453
return TRUE;
00454 }
else if ( trimmed.find(asterSlash) != -1 ) {
00455
return FALSE;
00456 }
00457 }
00458 }
00459
return FALSE;
00460 }
00461
00462
00463
00464
00465
00466
00467
00468
00469
00470 static int indentWhenBottomLineStartsInCComment()
00471 {
00472
int k =
yyLine->findRev(
QString(
"/*") );
00473
if ( k == -1 ) {
00474
00475
00476
00477
00478
return indentOfLine( *
yyLine );
00479 }
else {
00480
00481
00482
00483
00484
00485
int indent =
columnForIndex( *
yyLine, k );
00486 k += 2;
00487
while ( k < (
int)
yyLine->length() ) {
00488
if ( !(*yyLine)[k].isSpace() )
00489
return columnForIndex( *
yyLine, k );
00490 k++;
00491 }
00492
return indent +
ppCommentOffset;
00493 }
00494 }
00495
00496
00497
00498
00499
00500
00501
00502
00503
00504
00505
00506
00507
00508
00509
00510
00511
00512
00513
00514 static bool matchBracelessControlStatement()
00515 {
00516
int delimDepth = 0;
00517
00518
if (
yyLine->endsWith(
QString(
"else")) )
00519
return TRUE;
00520
00521
if ( !
yyLine->endsWith(
QChar(
')')) )
00522
return FALSE;
00523
00524
for (
int i = 0; i <
SmallRoof; i++ ) {
00525
int j =
yyLine->length();
00526
while ( j > 0 ) {
00527 j--;
00528
QChar ch = (*yyLine)[j];
00529
00530
switch ( ch.unicode() ) {
00531
case ')':
00532 delimDepth++;
00533
break;
00534
case '(':
00535 delimDepth--;
00536
if ( delimDepth == 0 ) {
00537
if (
yyLine->find(*
iflikeKeyword) != -1 ) {
00538
00539
00540
00541
00542
00543
00544
00545
00546
00547
return TRUE;
00548 }
00549 }
00550
if ( delimDepth == -1 ) {
00551
00552
00553
00554
00555
00556
00557
00558
00559
00560
00561
00562
return FALSE;
00563 }
00564
break;
00565
case '{':
00566
case '}':
00567
case ';':
00568
00569
00570
00571
00572
00573
00574
if ( ch !=
QChar(
';' ) || delimDepth == 0 )
00575
return FALSE;
00576 }
00577 }
00578
00579
if ( !
readLine() )
00580
break;
00581 }
00582
return FALSE;
00583 }
00584
00585
00586
00587
00588
00589
00590
00591
00592
00593
00594
00595
00596
00597
00598
00599 static bool isUnfinishedLine()
00600 {
00601
bool unf = FALSE;
00602
00603
YY_SAVE();
00604
00605
if (
yyLine->isEmpty() )
00606
return FALSE;
00607
00608
QChar lastCh = (*yyLine)[(
int)
yyLine->length() - 1];
00609
if (
QString(
"{};").find(lastCh) == -1 ) {
00610
00611
00612
00613
00614
00615 unf = (
yyLine->contains(
QString(
"Q_OBJECT")) == 0 &&
00616 !
matchBracelessControlStatement() );
00617 }
else if ( lastCh ==
QChar(
';') ) {
00618
if (
lastParen(*
yyLine) == QChar(
'(') ) {
00619
00620
00621
00622
00623
00624 unf = TRUE;
00625 }
else if (
readLine() &&
yyLine->endsWith(QChar(
';')) &&
00626
lastParen(*
yyLine) == QChar(
'(') ) {
00627
00628
00629
00630
00631
00632
00633 unf = TRUE;
00634 }
00635 }
00636
00637
YY_RESTORE();
00638
return unf;
00639 }
00640
00641
00642
00643
00644
00645 static bool isContinuationLine()
00646 {
00647
bool cont = FALSE;
00648
00649
YY_SAVE();
00650
if (
readLine() )
00651 cont =
isUnfinishedLine();
00652
YY_RESTORE();
00653
return cont;
00654 }
00655
00656
00657
00658
00659
00660
00661
00662
00663
00664 static int indentForContinuationLine()
00665 {
00666
int braceDepth = 0;
00667
int delimDepth = 0;
00668
00669
bool leftBraceFollowed = *
yyLeftBraceFollows;
00670
00671
for (
int i = 0; i <
SmallRoof; i++ ) {
00672
int hook = -1;
00673
00674
int j =
yyLine->length();
00675
while ( j > 0 && hook < 0 ) {
00676 j--;
00677
QChar ch = (*yyLine)[j];
00678
00679
switch ( ch.unicode() ) {
00680
case ')':
00681
case ']':
00682 delimDepth++;
00683
break;
00684
case '}':
00685 braceDepth++;
00686
break;
00687
case '(':
00688
case '[':
00689 delimDepth--;
00690
00691
00692
00693
00694
if ( delimDepth == -1 )
00695 hook = j;
00696
break;
00697
case '{':
00698 braceDepth--;
00699
00700
00701
00702
00703
00704
00705
if ( braceDepth == -1 ) {
00706
if ( j < (
int)
yyLine->length() - 1 ) {
00707 hook = j;
00708 }
else {
00709
return 0;
00710 }
00711 }
00712
break;
00713
case '=':
00714
00715
00716
00717
00718
00719
00720
00721
00722
00723
00724
00725
00726
00727
00728
00729
00730
00731
00732
00733
00734
00735
00736
00737
00738
00739
if ( j == 0 ||
QString(
"!=<>").find((*
yyLine)[j - 1]) == -1 ) {
00740
if ( braceDepth == 0 && delimDepth == 0 &&
00741 j < (
int)
yyLine->length() - 1 &&
00742 !
yyLine->endsWith(
QChar(
',')) &&
00743 (
yyLine->contains(
QChar(
'(')) ==
00744
yyLine->contains(
QChar(
')'))) )
00745 hook = j;
00746 }
00747 }
00748 }
00749
00750
if ( hook >= 0 ) {
00751
00752
00753
00754
00755
00756
00757
00758
00759
00760
00761
00762
00763
00764
00765 hook++;
00766
while ( hook < (
int)
yyLine->length() ) {
00767
if ( !(*yyLine)[hook].isSpace() )
00768
return columnForIndex( *
yyLine, hook );
00769 hook++;
00770 }
00771
return indentOfLine( *
yyLine ) +
ppContinuationIndentSize;
00772 }
00773
00774
if ( braceDepth != 0 )
00775
break;
00776
00777
00778
00779
00780
00781
if ( delimDepth == 0 ) {
00782
if (
isContinuationLine() || leftBraceFollowed ) {
00783
00784
00785
00786
00787
00788
00789
00790
00791
00792
00793
00794
00795
00796
00797
00798
return indentOfLine( *
yyLine );
00799 }
else {
00800
00801
00802
00803
00804
00805
00806
00807
00808
00809
00810
00811
00812
00813
00814
00815
00816
return indentOfLine( *
yyLine ) +
ppContinuationIndentSize;
00817 }
00818 }
00819
00820
if ( !
readLine() )
00821
break;
00822 }
00823
return 0;
00824 }
00825
00826
00827
00828
00829
00830
00831
00832
00833
00834
00835
00836
00837
00838
00839
00840
00841
00842
00843
00844
00845
00846
00847
00848
00849
00850
00851
00852
00853
00854
00855
00856
00857
00858
00859
00860
00861
00862
00863
00864
00865
00866
00867
00868
00869
00870
00871
00872
00873
00874
00875
00876
00877 static int indentForStandaloneLine()
00878 {
00879
for (
int i = 0; i <
SmallRoof; i++ ) {
00880
if ( !*
yyLeftBraceFollows ) {
00881
YY_SAVE();
00882
00883
if (
matchBracelessControlStatement() ) {
00884
00885
00886
00887
00888
00889
00890
00891
00892
00893
return indentOfLine( *
yyLine ) +
ppIndentSize;
00894 }
00895
YY_RESTORE();
00896 }
00897
00898
if (
yyLine->endsWith(
QChar(
';')) ||
00899
yyLine->contains(
QChar(
'{')) > 0 ) {
00900
00901
00902
00903
00904
00905
00906
00907
00908
00909
00910
00911
00912
if ( *
yyBraceDepth > 0 ) {
00913
do {
00914
if ( !
readLine() )
00915
break;
00916 }
while ( *
yyBraceDepth > 0 );
00917 }
00918
00919
LinizerState hookState;
00920
00921
if ( *
yyBraceDepth == 0 ) {
00922
while (
isContinuationLine() )
00923
readLine();
00924 hookState = *
yyLinizerState;
00925
00926
readLine();
00927
if ( *
yyBraceDepth == 0 ) {
00928
do {
00929
if ( !
matchBracelessControlStatement() )
00930
break;
00931 hookState = *
yyLinizerState;
00932 }
while (
readLine() );
00933 }
00934 }
else {
00935 hookState = *
yyLinizerState;
00936 }
00937
00938 *
yyLinizerState = hookState;
00939
00940
while (
isContinuationLine() )
00941
readLine();
00942
00943
00944
00945
00946
00947
if (
yyLine->stripWhiteSpace().length() > 1 )
00948
return indentOfLine( *
yyLine ) - *
yyBraceDepth *
ppIndentSize;
00949 }
00950
00951
if ( !
readLine() )
00952
break;
00953 }
00954
return 0;
00955 }
00956
00957
00958
00959
00960 static void initializeIndenter()
00961 {
00962
literal =
new QRegExp(
QString(
"([\"'])(?:\\\\.|[^\\\\])*\\1") );
00963
literal->setMinimal( TRUE );
00964
label =
new QRegExp(
QString(
00965
"^\\s*((?:case\\b[^:]+|[a-zA-Z_0-9]+):)(?!:)") );
00966
inlineCComment =
new QRegExp(
QString(
"/\\*.*\\*/") );
00967
inlineCComment->setMinimal( TRUE );
00968
braceX =
new QRegExp(
QString(
"^\\s*\\}\\s*(?:else|catch)\\b") );
00969
iflikeKeyword =
new QRegExp(
QString(
"\\b(?:catch|do|for|if|while)\\b") );
00970
00971
yyLinizerState =
new LinizerState;
00972 }
00973
00974
00975
00976
00977 static void terminateIndenter()
00978 {
00979
delete literal;
00980
delete label;
00981
delete inlineCComment;
00982
delete braceX;
00983
delete iflikeKeyword;
00984
delete yyLinizerState;
00985 }
00986
00987
00988
00989
00990
00991
00992
00993
00994
00995
00996
00997 int indentForBottomLine(
const QStringList& program,
QChar typedIn )
00998 {
00999
if ( program.isEmpty() )
01000
return 0;
01001
01002
initializeIndenter();
01003
01004
yyProgram =
new QStringList( program );
01005
startLinizer();
01006
01007
const QString& bottomLine = program.last();
01008
QChar firstCh =
firstNonWhiteSpace( bottomLine );
01009
int indent;
01010
01011
if (
bottomLineStartsInCComment() ) {
01012
01013
01014
01015
01016
01017
if (
isOnlyWhiteSpace(bottomLine) ) {
01018 indent =
indentWhenBottomLineStartsInCComment();
01019 }
else {
01020 indent =
indentOfLine( bottomLine );
01021 }
01022 }
else if (
okay(typedIn,
QChar(
'#')) && firstCh ==
QChar(
'#') ) {
01023
01024
01025
01026 indent = 0;
01027 }
else {
01028
if (
isUnfinishedLine() ) {
01029 indent =
indentForContinuationLine();
01030 }
else {
01031 indent =
indentForStandaloneLine();
01032 }
01033
01034
if (
okay(typedIn, QChar(
'}')) && firstCh == QChar(
'}') ) {
01035
01036
01037
01038
01039 indent -=
ppIndentSize;
01040 }
else if (
okay(typedIn, QChar(
':')) ) {
01041
QRegExp caseLabel(
QString(
01042
"\\s*(?:case\\b[^:]+|default\\s+):\\s*") );
01043
01044
if ( caseLabel.exactMatch(bottomLine) ) {
01045
01046
01047
01048
01049
01050
01051
01052
01053
01054
01055
if (
indentOfLine(bottomLine) <= indent )
01056 indent -=
ppIndentSize;
01057
else
01058 indent =
indentOfLine( bottomLine );
01059 }
01060 }
01061 }
01062
delete yyProgram;
01063
terminateIndenter();
01064
return QMAX( 0, indent );
01065 }
01066
01067
#ifdef Q_TEST_YYINDENT
01068
01069
01070
01071
01072
#include <qfile.h>
01073
#include <qtextstream.h>
01074
01075
#include <errno.h>
01076
01077
static QString fileContents(
const QString& fileName )
01078 {
01079
QFile f( fileName );
01080
if ( !f.open(IO_ReadOnly) ) {
01081 qWarning(
"yyindent error: Cannot open file '%s' for reading: %s",
01082 fileName.latin1(), strerror(errno) );
01083
return QString::null;
01084 }
01085
01086
QTextStream t( &f );
01087
QString contents = t.read();
01088 f.close();
01089
if ( contents.isEmpty() )
01090 qWarning(
"yyindent error: File '%s' is empty", fileName.latin1() );
01091
return contents;
01092 }
01093
01094
int main(
int argc,
char **argv )
01095 {
01096
if ( argc != 2 ) {
01097 qWarning(
"usage: yyindent file.cpp" );
01098
return 1;
01099 }
01100
01101
QString code = fileContents(
QString(argv[1]) );
01102
QStringList program = QStringList::split(
QChar(
'\n'), code, TRUE );
01103
QStringList p;
01104
QString out;
01105
01106
while ( !program.isEmpty() && program.last().stripWhiteSpace().isEmpty() )
01107 program.remove( program.fromLast() );
01108
01109 QStringList::ConstIterator line = program.begin();
01110
while ( line != program.end() ) {
01111 p.push_back( *line );
01112
QChar typedIn =
firstNonWhiteSpace( *line );
01113
if ( p.last().endsWith(
QChar(
':')) )
01114 typedIn =
QChar(
':' );
01115
int indent =
indentForBottomLine( p, typedIn );
01116
01117
if ( !(*line).stripWhiteSpace().isEmpty() ) {
01118
for (
int j = 0; j < indent; j++ )
01119 out += QChar(
' ' );
01120 out += (*line).stripWhiteSpace();
01121 }
01122 out += QChar(
'\n' );
01123 line++;
01124 }
01125
01126
while ( out.endsWith(
QChar(
'\n')) )
01127 out.truncate( out.length() - 1 );
01128
01129 printf(
"%s\n", out.latin1() );
01130
return 0;
01131 }
01132
#endif