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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486
|
// Scintilla source code edit control
/** @file PerLine.cxx
** Manages data associated with each line of the document
**/
// Copyright 1998-2009 by Neil Hodgson <neilh@scintilla.org>
// The License.txt file describes the conditions under which this software may be distributed.
#include <string.h>
#include "Platform.h"
#include "Scintilla.h"
#include "SplitVector.h"
#include "Partitioning.h"
#include "CellBuffer.h"
#include "PerLine.h"
#ifdef SCI_NAMESPACE
using namespace Scintilla;
#endif
MarkerHandleSet::MarkerHandleSet() {
root = 0;
}
MarkerHandleSet::~MarkerHandleSet() {
MarkerHandleNumber *mhn = root;
while (mhn) {
MarkerHandleNumber *mhnToFree = mhn;
mhn = mhn->next;
delete mhnToFree;
}
root = 0;
}
int MarkerHandleSet::Length() const {
int c = 0;
MarkerHandleNumber *mhn = root;
while (mhn) {
c++;
mhn = mhn->next;
}
return c;
}
int MarkerHandleSet::NumberFromHandle(int handle) const {
MarkerHandleNumber *mhn = root;
while (mhn) {
if (mhn->handle == handle) {
return mhn->number;
}
mhn = mhn->next;
}
return - 1;
}
int MarkerHandleSet::MarkValue() const {
unsigned int m = 0;
MarkerHandleNumber *mhn = root;
while (mhn) {
m |= (1 << mhn->number);
mhn = mhn->next;
}
return m;
}
bool MarkerHandleSet::Contains(int handle) const {
MarkerHandleNumber *mhn = root;
while (mhn) {
if (mhn->handle == handle) {
return true;
}
mhn = mhn->next;
}
return false;
}
bool MarkerHandleSet::InsertHandle(int handle, int markerNum) {
MarkerHandleNumber *mhn = new MarkerHandleNumber;
if (!mhn)
return false;
mhn->handle = handle;
mhn->number = markerNum;
mhn->next = root;
root = mhn;
return true;
}
void MarkerHandleSet::RemoveHandle(int handle) {
MarkerHandleNumber **pmhn = &root;
while (*pmhn) {
MarkerHandleNumber *mhn = *pmhn;
if (mhn->handle == handle) {
*pmhn = mhn->next;
delete mhn;
return;
}
pmhn = &((*pmhn)->next);
}
}
bool MarkerHandleSet::RemoveNumber(int markerNum) {
bool performedDeletion = false;
MarkerHandleNumber **pmhn = &root;
while (*pmhn) {
MarkerHandleNumber *mhn = *pmhn;
if (mhn->number == markerNum) {
*pmhn = mhn->next;
delete mhn;
performedDeletion = true;
} else {
pmhn = &((*pmhn)->next);
}
}
return performedDeletion;
}
void MarkerHandleSet::CombineWith(MarkerHandleSet *other) {
MarkerHandleNumber **pmhn = &root;
while (*pmhn) {
pmhn = &((*pmhn)->next);
}
*pmhn = other->root;
other->root = 0;
}
LineMarkers::~LineMarkers() {
Init();
}
void LineMarkers::Init() {
for (int line = 0; line < markers.Length(); line++) {
delete markers[line];
markers[line] = 0;
}
markers.DeleteAll();
}
void LineMarkers::InsertLine(int line) {
if (markers.Length()) {
markers.Insert(line, 0);
}
}
void LineMarkers::RemoveLine(int line) {
// Retain the markers from the deleted line by oring them into the previous line
if (markers.Length()) {
if (line > 0) {
MergeMarkers(line - 1);
}
markers.Delete(line);
}
}
int LineMarkers::LineFromHandle(int markerHandle) {
if (markers.Length()) {
for (int line = 0; line < markers.Length(); line++) {
if (markers[line]) {
if (markers[line]->Contains(markerHandle)) {
return line;
}
}
}
}
return -1;
}
void LineMarkers::MergeMarkers(int pos) {
if (markers[pos + 1] != NULL) {
if (markers[pos] == NULL)
markers[pos] = new MarkerHandleSet;
markers[pos]->CombineWith(markers[pos + 1]);
delete markers[pos + 1];
markers[pos + 1] = NULL;
}
}
int LineMarkers::MarkValue(int line) {
if (markers.Length() && (line >= 0) && (line < markers.Length()) && markers[line])
return markers[line]->MarkValue();
else
return 0;
}
int LineMarkers::AddMark(int line, int markerNum, int lines) {
handleCurrent++;
if (!markers.Length()) {
// No existing markers so allocate one element per line
markers.InsertValue(0, lines, 0);
}
if (line >= markers.Length()) {
return -1;
}
if (!markers[line]) {
// Need new structure to hold marker handle
markers[line] = new MarkerHandleSet();
if (!markers[line])
return -1;
}
markers[line]->InsertHandle(handleCurrent, markerNum);
return handleCurrent;
}
void LineMarkers::DeleteMark(int line, int markerNum, bool all) {
if (markers.Length() && (line >= 0) && (line < markers.Length()) && markers[line]) {
if (markerNum == -1) {
delete markers[line];
markers[line] = NULL;
} else {
bool performedDeletion = markers[line]->RemoveNumber(markerNum);
while (all && performedDeletion) {
performedDeletion = markers[line]->RemoveNumber(markerNum);
}
if (markers[line]->Length() == 0) {
delete markers[line];
markers[line] = NULL;
}
}
}
}
void LineMarkers::DeleteMarkFromHandle(int markerHandle) {
int line = LineFromHandle(markerHandle);
if (line >= 0) {
markers[line]->RemoveHandle(markerHandle);
if (markers[line]->Length() == 0) {
delete markers[line];
markers[line] = NULL;
}
}
}
LineLevels::~LineLevels() {
}
void LineLevels::Init() {
levels.DeleteAll();
}
void LineLevels::InsertLine(int line) {
if (levels.Length()) {
int level = SC_FOLDLEVELBASE;
if ((line > 0) && (line < levels.Length())) {
level = levels[line-1] & ~SC_FOLDLEVELWHITEFLAG;
}
levels.InsertValue(line, 1, level);
}
}
void LineLevels::RemoveLine(int line) {
if (levels.Length()) {
// Move up following lines but merge header flag from this line
// to line before to avoid a temporary disappearence causing expansion.
int firstHeader = levels[line] & SC_FOLDLEVELHEADERFLAG;
levels.Delete(line);
if (line == levels.Length()-1) // Last line loses the header flag
levels[line-1] &= ~SC_FOLDLEVELHEADERFLAG;
else if (line > 0)
levels[line-1] |= firstHeader;
}
}
void LineLevels::ExpandLevels(int sizeNew) {
levels.InsertValue(levels.Length(), sizeNew - levels.Length(), SC_FOLDLEVELBASE);
}
void LineLevels::ClearLevels() {
levels.DeleteAll();
}
int LineLevels::SetLevel(int line, int level, int lines) {
int prev = 0;
if ((line >= 0) && (line < lines)) {
if (!levels.Length()) {
ExpandLevels(lines + 1);
}
prev = levels[line];
if (prev != level) {
levels[line] = level;
}
}
return prev;
}
int LineLevels::GetLevel(int line) {
if (levels.Length() && (line >= 0) && (line < levels.Length())) {
return levels[line];
} else {
return SC_FOLDLEVELBASE;
}
}
LineState::~LineState() {
}
void LineState::Init() {
lineStates.DeleteAll();
}
void LineState::InsertLine(int line) {
if (lineStates.Length()) {
lineStates.EnsureLength(line);
lineStates.Insert(line, 0);
}
}
void LineState::RemoveLine(int line) {
if (lineStates.Length() > line) {
lineStates.Delete(line);
}
}
int LineState::SetLineState(int line, int state) {
lineStates.EnsureLength(line + 1);
int stateOld = lineStates[line];
lineStates[line] = state;
return stateOld;
}
int LineState::GetLineState(int line) {
lineStates.EnsureLength(line + 1);
return lineStates[line];
}
int LineState::GetMaxLineState() {
return lineStates.Length();
}
static int NumberLines(const char *text) {
if (text) {
int newLines = 0;
while (*text) {
if (*text == '\n')
newLines++;
text++;
}
return newLines+1;
} else {
return 0;
}
}
// Each allocated LineAnnotation is a char array which starts with an AnnotationHeader
// and then has text and optional styles.
static const int IndividualStyles = 0x100;
struct AnnotationHeader {
short style; // Style IndividualStyles implies array of styles
short lines;
int length;
};
LineAnnotation::~LineAnnotation() {
ClearAll();
}
void LineAnnotation::Init() {
ClearAll();
}
void LineAnnotation::InsertLine(int line) {
if (annotations.Length()) {
annotations.EnsureLength(line);
annotations.Insert(line, 0);
}
}
void LineAnnotation::RemoveLine(int line) {
if (annotations.Length() && (line < annotations.Length())) {
delete []annotations[line];
annotations.Delete(line);
}
}
bool LineAnnotation::AnySet() const {
return annotations.Length() > 0;
}
bool LineAnnotation::MultipleStyles(int line) const {
if (annotations.Length() && (line < annotations.Length()) && annotations[line])
return reinterpret_cast<AnnotationHeader *>(annotations[line])->style == IndividualStyles;
else
return 0;
}
int LineAnnotation::Style(int line) {
if (annotations.Length() && (line < annotations.Length()) && annotations[line])
return reinterpret_cast<AnnotationHeader *>(annotations[line])->style;
else
return 0;
}
const char *LineAnnotation::Text(int line) const {
if (annotations.Length() && (line < annotations.Length()) && annotations[line])
return annotations[line]+sizeof(AnnotationHeader);
else
return 0;
}
const unsigned char *LineAnnotation::Styles(int line) const {
if (annotations.Length() && (line < annotations.Length()) && annotations[line] && MultipleStyles(line))
return reinterpret_cast<unsigned char *>(annotations[line] + sizeof(AnnotationHeader) + Length(line));
else
return 0;
}
static char *AllocateAnnotation(int length, int style) {
size_t len = sizeof(AnnotationHeader) + length + ((style == IndividualStyles) ? length : 0);
char *ret = new char[len];
memset(ret, 0, len);
return ret;
}
void LineAnnotation::SetText(int line, const char *text) {
if (text) {
annotations.EnsureLength(line+1);
int style = Style(line);
if (annotations[line]) {
delete []annotations[line];
}
annotations[line] = AllocateAnnotation(strlen(text), style);
AnnotationHeader *pah = reinterpret_cast<AnnotationHeader *>(annotations[line]);
pah->style = static_cast<short>(style);
pah->length = strlen(text);
pah->lines = static_cast<short>(NumberLines(text));
memcpy(annotations[line]+sizeof(AnnotationHeader), text, pah->length);
} else {
if (annotations.Length() && (line < annotations.Length()) && annotations[line]) {
delete []annotations[line];
annotations[line] = 0;
}
}
}
void LineAnnotation::ClearAll() {
for (int line = 0; line < annotations.Length(); line++) {
delete []annotations[line];
annotations[line] = 0;
}
annotations.DeleteAll();
}
void LineAnnotation::SetStyle(int line, int style) {
annotations.EnsureLength(line+1);
if (!annotations[line]) {
annotations[line] = AllocateAnnotation(0, style);
}
reinterpret_cast<AnnotationHeader *>(annotations[line])->style = static_cast<short>(style);
}
void LineAnnotation::SetStyles(int line, const unsigned char *styles) {
annotations.EnsureLength(line+1);
if (!annotations[line]) {
annotations[line] = AllocateAnnotation(0, IndividualStyles);
} else {
AnnotationHeader *pahSource = reinterpret_cast<AnnotationHeader *>(annotations[line]);
if (pahSource->style != IndividualStyles) {
char *allocation = AllocateAnnotation(pahSource->length, IndividualStyles);
AnnotationHeader *pahAlloc = reinterpret_cast<AnnotationHeader *>(allocation);
pahAlloc->length = pahSource->length;
pahAlloc->lines = pahSource->lines;
memcpy(allocation + sizeof(AnnotationHeader), annotations[line] + sizeof(AnnotationHeader), pahSource->length);
delete []annotations[line];
annotations[line] = allocation;
}
}
AnnotationHeader *pah = reinterpret_cast<AnnotationHeader *>(annotations[line]);
pah->style = IndividualStyles;
memcpy(annotations[line] + sizeof(AnnotationHeader) + pah->length, styles, pah->length);
}
int LineAnnotation::Length(int line) const {
if (annotations.Length() && (line < annotations.Length()) && annotations[line])
return reinterpret_cast<AnnotationHeader *>(annotations[line])->length;
else
return 0;
}
int LineAnnotation::Lines(int line) const {
if (annotations.Length() && (line < annotations.Length()) && annotations[line])
return reinterpret_cast<AnnotationHeader *>(annotations[line])->lines;
else
return 0;
}
|