483 lines
12 KiB
C++
483 lines
12 KiB
C++
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// Scintilla source code edit control
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/** @file PerLine.cxx
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** Manages data associated with each line of the document
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**/
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// Copyright 1998-2009 by Neil Hodgson <neilh@scintilla.org>
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// The License.txt file describes the conditions under which this software may be distributed.
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#include "Platform.h"
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#include "Scintilla.h"
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#include "SplitVector.h"
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#include "Partitioning.h"
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#include "CellBuffer.h"
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#include "PerLine.h"
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#ifdef SCI_NAMESPACE
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using namespace Scintilla;
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#endif
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MarkerHandleSet::MarkerHandleSet() {
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root = 0;
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}
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MarkerHandleSet::~MarkerHandleSet() {
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MarkerHandleNumber *mhn = root;
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while (mhn) {
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MarkerHandleNumber *mhnToFree = mhn;
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mhn = mhn->next;
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delete mhnToFree;
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}
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root = 0;
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}
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int MarkerHandleSet::Length() const {
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int c = 0;
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MarkerHandleNumber *mhn = root;
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while (mhn) {
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c++;
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mhn = mhn->next;
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}
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return c;
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}
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int MarkerHandleSet::MarkValue() const {
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unsigned int m = 0;
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MarkerHandleNumber *mhn = root;
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while (mhn) {
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m |= (1 << mhn->number);
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mhn = mhn->next;
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}
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return m;
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}
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bool MarkerHandleSet::Contains(int handle) const {
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MarkerHandleNumber *mhn = root;
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while (mhn) {
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if (mhn->handle == handle) {
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return true;
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}
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mhn = mhn->next;
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}
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return false;
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}
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bool MarkerHandleSet::InsertHandle(int handle, int markerNum) {
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MarkerHandleNumber *mhn = new MarkerHandleNumber;
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mhn->handle = handle;
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mhn->number = markerNum;
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mhn->next = root;
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root = mhn;
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return true;
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}
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void MarkerHandleSet::RemoveHandle(int handle) {
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MarkerHandleNumber **pmhn = &root;
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while (*pmhn) {
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MarkerHandleNumber *mhn = *pmhn;
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if (mhn->handle == handle) {
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*pmhn = mhn->next;
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delete mhn;
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return;
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}
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pmhn = &((*pmhn)->next);
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}
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}
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bool MarkerHandleSet::RemoveNumber(int markerNum, bool all) {
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bool performedDeletion = false;
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MarkerHandleNumber **pmhn = &root;
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while (*pmhn) {
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MarkerHandleNumber *mhn = *pmhn;
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if (mhn->number == markerNum) {
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*pmhn = mhn->next;
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delete mhn;
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performedDeletion = true;
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if (!all)
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break;
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} else {
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pmhn = &((*pmhn)->next);
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}
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}
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return performedDeletion;
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}
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void MarkerHandleSet::CombineWith(MarkerHandleSet *other) {
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MarkerHandleNumber **pmhn = &root;
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while (*pmhn) {
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pmhn = &((*pmhn)->next);
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}
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*pmhn = other->root;
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other->root = 0;
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}
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LineMarkers::~LineMarkers() {
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Init();
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}
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void LineMarkers::Init() {
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for (int line = 0; line < markers.Length(); line++) {
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delete markers[line];
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markers[line] = 0;
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}
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markers.DeleteAll();
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}
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void LineMarkers::InsertLine(int line) {
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if (markers.Length()) {
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markers.Insert(line, 0);
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}
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}
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void LineMarkers::RemoveLine(int line) {
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// Retain the markers from the deleted line by oring them into the previous line
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if (markers.Length()) {
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if (line > 0) {
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MergeMarkers(line - 1);
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}
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markers.Delete(line);
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}
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}
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int LineMarkers::LineFromHandle(int markerHandle) {
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if (markers.Length()) {
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for (int line = 0; line < markers.Length(); line++) {
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if (markers[line]) {
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if (markers[line]->Contains(markerHandle)) {
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return line;
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}
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}
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}
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}
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return -1;
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}
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void LineMarkers::MergeMarkers(int pos) {
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if (markers[pos + 1] != NULL) {
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if (markers[pos] == NULL)
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markers[pos] = new MarkerHandleSet;
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markers[pos]->CombineWith(markers[pos + 1]);
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delete markers[pos + 1];
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markers[pos + 1] = NULL;
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}
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}
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int LineMarkers::MarkValue(int line) {
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if (markers.Length() && (line >= 0) && (line < markers.Length()) && markers[line])
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return markers[line]->MarkValue();
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else
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return 0;
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}
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int LineMarkers::MarkerNext(int lineStart, int mask) const {
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if (lineStart < 0)
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lineStart = 0;
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int length = markers.Length();
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for (int iLine = lineStart; iLine < length; iLine++) {
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MarkerHandleSet *onLine = markers[iLine];
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if (onLine && ((onLine->MarkValue() & mask) != 0))
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//if ((pdoc->GetMark(iLine) & lParam) != 0)
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return iLine;
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}
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return -1;
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}
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int LineMarkers::AddMark(int line, int markerNum, int lines) {
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handleCurrent++;
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if (!markers.Length()) {
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// No existing markers so allocate one element per line
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markers.InsertValue(0, lines, 0);
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}
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if (line >= markers.Length()) {
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return -1;
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}
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if (!markers[line]) {
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// Need new structure to hold marker handle
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markers[line] = new MarkerHandleSet();
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}
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markers[line]->InsertHandle(handleCurrent, markerNum);
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return handleCurrent;
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}
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bool LineMarkers::DeleteMark(int line, int markerNum, bool all) {
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bool someChanges = false;
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if (markers.Length() && (line >= 0) && (line < markers.Length()) && markers[line]) {
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if (markerNum == -1) {
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someChanges = true;
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delete markers[line];
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markers[line] = NULL;
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} else {
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someChanges = markers[line]->RemoveNumber(markerNum, all);
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if (markers[line]->Length() == 0) {
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delete markers[line];
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markers[line] = NULL;
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}
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}
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}
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return someChanges;
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}
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void LineMarkers::DeleteMarkFromHandle(int markerHandle) {
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int line = LineFromHandle(markerHandle);
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if (line >= 0) {
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markers[line]->RemoveHandle(markerHandle);
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if (markers[line]->Length() == 0) {
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delete markers[line];
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markers[line] = NULL;
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}
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}
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}
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LineLevels::~LineLevels() {
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}
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void LineLevels::Init() {
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levels.DeleteAll();
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}
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void LineLevels::InsertLine(int line) {
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if (levels.Length()) {
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int level = (line < levels.Length()) ? levels[line] : SC_FOLDLEVELBASE;
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levels.InsertValue(line, 1, level);
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}
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}
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void LineLevels::RemoveLine(int line) {
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if (levels.Length()) {
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// Move up following lines but merge header flag from this line
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// to line before to avoid a temporary disappearence causing expansion.
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int firstHeader = levels[line] & SC_FOLDLEVELHEADERFLAG;
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levels.Delete(line);
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if (line == levels.Length()-1) // Last line loses the header flag
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levels[line-1] &= ~SC_FOLDLEVELHEADERFLAG;
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else if (line > 0)
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levels[line-1] |= firstHeader;
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}
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}
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void LineLevels::ExpandLevels(int sizeNew) {
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levels.InsertValue(levels.Length(), sizeNew - levels.Length(), SC_FOLDLEVELBASE);
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}
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void LineLevels::ClearLevels() {
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levels.DeleteAll();
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}
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int LineLevels::SetLevel(int line, int level, int lines) {
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int prev = 0;
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if ((line >= 0) && (line < lines)) {
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if (!levels.Length()) {
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ExpandLevels(lines + 1);
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}
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prev = levels[line];
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if (prev != level) {
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levels[line] = level;
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}
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}
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return prev;
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}
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int LineLevels::GetLevel(int line) const {
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if (levels.Length() && (line >= 0) && (line < levels.Length())) {
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return levels[line];
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} else {
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return SC_FOLDLEVELBASE;
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}
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}
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LineState::~LineState() {
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}
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void LineState::Init() {
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lineStates.DeleteAll();
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}
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void LineState::InsertLine(int line) {
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if (lineStates.Length()) {
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lineStates.EnsureLength(line);
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int val = (line < lineStates.Length()) ? lineStates[line] : 0;
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lineStates.Insert(line, val);
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}
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}
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void LineState::RemoveLine(int line) {
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if (lineStates.Length() > line) {
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lineStates.Delete(line);
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}
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}
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int LineState::SetLineState(int line, int state) {
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lineStates.EnsureLength(line + 1);
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int stateOld = lineStates[line];
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lineStates[line] = state;
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return stateOld;
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}
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int LineState::GetLineState(int line) {
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if (line < 0)
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return 0;
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lineStates.EnsureLength(line + 1);
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return lineStates[line];
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}
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int LineState::GetMaxLineState() const {
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return lineStates.Length();
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}
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static int NumberLines(const char *text) {
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if (text) {
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int newLines = 0;
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while (*text) {
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if (*text == '\n')
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newLines++;
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text++;
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}
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return newLines+1;
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} else {
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return 0;
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}
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}
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// Each allocated LineAnnotation is a char array which starts with an AnnotationHeader
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// and then has text and optional styles.
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static const int IndividualStyles = 0x100;
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struct AnnotationHeader {
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short style; // Style IndividualStyles implies array of styles
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short lines;
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int length;
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};
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LineAnnotation::~LineAnnotation() {
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ClearAll();
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}
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void LineAnnotation::Init() {
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ClearAll();
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}
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void LineAnnotation::InsertLine(int line) {
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if (annotations.Length()) {
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annotations.EnsureLength(line);
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annotations.Insert(line, 0);
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}
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}
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void LineAnnotation::RemoveLine(int line) {
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if (annotations.Length() && (line > 0) && (line <= annotations.Length())) {
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delete []annotations[line-1];
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annotations.Delete(line-1);
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}
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}
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bool LineAnnotation::MultipleStyles(int line) const {
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if (annotations.Length() && (line >= 0) && (line < annotations.Length()) && annotations[line])
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return reinterpret_cast<AnnotationHeader *>(annotations[line])->style == IndividualStyles;
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else
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return 0;
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}
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int LineAnnotation::Style(int line) const {
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if (annotations.Length() && (line >= 0) && (line < annotations.Length()) && annotations[line])
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return reinterpret_cast<AnnotationHeader *>(annotations[line])->style;
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else
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return 0;
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}
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const char *LineAnnotation::Text(int line) const {
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if (annotations.Length() && (line >= 0) && (line < annotations.Length()) && annotations[line])
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return annotations[line]+sizeof(AnnotationHeader);
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else
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return 0;
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}
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const unsigned char *LineAnnotation::Styles(int line) const {
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if (annotations.Length() && (line >= 0) && (line < annotations.Length()) && annotations[line] && MultipleStyles(line))
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return reinterpret_cast<unsigned char *>(annotations[line] + sizeof(AnnotationHeader) + Length(line));
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else
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return 0;
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}
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static char *AllocateAnnotation(int length, int style) {
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size_t len = sizeof(AnnotationHeader) + length + ((style == IndividualStyles) ? length : 0);
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char *ret = new char[len];
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memset(ret, 0, len);
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return ret;
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}
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void LineAnnotation::SetText(int line, const char *text) {
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if (text && (line >= 0)) {
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annotations.EnsureLength(line+1);
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int style = Style(line);
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if (annotations[line]) {
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delete []annotations[line];
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}
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annotations[line] = AllocateAnnotation(static_cast<int>(strlen(text)), style);
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AnnotationHeader *pah = reinterpret_cast<AnnotationHeader *>(annotations[line]);
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pah->style = static_cast<short>(style);
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pah->length = static_cast<int>(strlen(text));
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pah->lines = static_cast<short>(NumberLines(text));
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memcpy(annotations[line]+sizeof(AnnotationHeader), text, pah->length);
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} else {
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if (annotations.Length() && (line >= 0) && (line < annotations.Length()) && annotations[line]) {
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delete []annotations[line];
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annotations[line] = 0;
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}
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}
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}
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void LineAnnotation::ClearAll() {
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for (int line = 0; line < annotations.Length(); line++) {
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delete []annotations[line];
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annotations[line] = 0;
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}
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annotations.DeleteAll();
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}
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void LineAnnotation::SetStyle(int line, int style) {
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annotations.EnsureLength(line+1);
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if (!annotations[line]) {
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annotations[line] = AllocateAnnotation(0, style);
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}
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reinterpret_cast<AnnotationHeader *>(annotations[line])->style = static_cast<short>(style);
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}
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void LineAnnotation::SetStyles(int line, const unsigned char *styles) {
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if (line >= 0) {
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annotations.EnsureLength(line+1);
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if (!annotations[line]) {
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annotations[line] = AllocateAnnotation(0, IndividualStyles);
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} else {
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AnnotationHeader *pahSource = reinterpret_cast<AnnotationHeader *>(annotations[line]);
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if (pahSource->style != IndividualStyles) {
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char *allocation = AllocateAnnotation(pahSource->length, IndividualStyles);
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AnnotationHeader *pahAlloc = reinterpret_cast<AnnotationHeader *>(allocation);
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pahAlloc->length = pahSource->length;
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pahAlloc->lines = pahSource->lines;
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memcpy(allocation + sizeof(AnnotationHeader), annotations[line] + sizeof(AnnotationHeader), pahSource->length);
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delete []annotations[line];
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annotations[line] = allocation;
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}
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}
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AnnotationHeader *pah = reinterpret_cast<AnnotationHeader *>(annotations[line]);
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pah->style = IndividualStyles;
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memcpy(annotations[line] + sizeof(AnnotationHeader) + pah->length, styles, pah->length);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
int LineAnnotation::Length(int line) const {
|
||
|
if (annotations.Length() && (line >= 0) && (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 >= 0) && (line < annotations.Length()) && annotations[line])
|
||
|
return reinterpret_cast<AnnotationHeader *>(annotations[line])->lines;
|
||
|
else
|
||
|
return 0;
|
||
|
}
|