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cursorTypeOperations.ts
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cursorTypeOperations.ts
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/*---------------------------------------------------------------------------------------------
* Copyright (c) Microsoft Corporation. All rights reserved.
* Licensed under the MIT License. See License.txt in the project root for license information.
*--------------------------------------------------------------------------------------------*/
import { CharCode } from 'vs/base/common/charCode';
import { onUnexpectedError } from 'vs/base/common/errors';
import * as strings from 'vs/base/common/strings';
import { ReplaceCommand, ReplaceCommandWithOffsetCursorState, ReplaceCommandWithoutChangingPosition, ReplaceCommandThatPreservesSelection } from 'vs/editor/common/commands/replaceCommand';
import { ShiftCommand } from 'vs/editor/common/commands/shiftCommand';
import { SurroundSelectionCommand } from 'vs/editor/common/commands/surroundSelectionCommand';
import { CursorColumns, CursorConfiguration, EditOperationResult, EditOperationType, ICursorSimpleModel, isQuote } from 'vs/editor/common/controller/cursorCommon';
import { WordCharacterClass, getMapForWordSeparators } from 'vs/editor/common/controller/wordCharacterClassifier';
import { Range } from 'vs/editor/common/core/range';
import { Selection } from 'vs/editor/common/core/selection';
import { Position } from 'vs/editor/common/core/position';
import { ICommand, ICursorStateComputerData } from 'vs/editor/common/editorCommon';
import { ITextModel } from 'vs/editor/common/model';
import { EnterAction, IndentAction, StandardAutoClosingPairConditional } from 'vs/editor/common/modes/languageConfiguration';
import { LanguageConfigurationRegistry } from 'vs/editor/common/modes/languageConfigurationRegistry';
import { IElectricAction } from 'vs/editor/common/modes/supports/electricCharacter';
import { EditorAutoIndentStrategy } from 'vs/editor/common/config/editorOptions';
export class TypeOperations {
public static indent(config: CursorConfiguration, model: ICursorSimpleModel | null, selections: Selection[] | null): ICommand[] {
if (model === null || selections === null) {
return [];
}
let commands: ICommand[] = [];
for (let i = 0, len = selections.length; i < len; i++) {
commands[i] = new ShiftCommand(selections[i], {
isUnshift: false,
tabSize: config.tabSize,
indentSize: config.indentSize,
insertSpaces: config.insertSpaces,
useTabStops: config.useTabStops,
autoIndent: config.autoIndent
});
}
return commands;
}
public static outdent(config: CursorConfiguration, model: ICursorSimpleModel, selections: Selection[]): ICommand[] {
let commands: ICommand[] = [];
for (let i = 0, len = selections.length; i < len; i++) {
commands[i] = new ShiftCommand(selections[i], {
isUnshift: true,
tabSize: config.tabSize,
indentSize: config.indentSize,
insertSpaces: config.insertSpaces,
useTabStops: config.useTabStops,
autoIndent: config.autoIndent
});
}
return commands;
}
public static shiftIndent(config: CursorConfiguration, indentation: string, count?: number): string {
count = count || 1;
return ShiftCommand.shiftIndent(indentation, indentation.length + count, config.tabSize, config.indentSize, config.insertSpaces);
}
public static unshiftIndent(config: CursorConfiguration, indentation: string, count?: number): string {
count = count || 1;
return ShiftCommand.unshiftIndent(indentation, indentation.length + count, config.tabSize, config.indentSize, config.insertSpaces);
}
private static _distributedPaste(config: CursorConfiguration, model: ICursorSimpleModel, selections: Selection[], text: string[]): EditOperationResult {
let commands: ICommand[] = [];
for (let i = 0, len = selections.length; i < len; i++) {
commands[i] = new ReplaceCommand(selections[i], text[i]);
}
return new EditOperationResult(EditOperationType.Other, commands, {
shouldPushStackElementBefore: true,
shouldPushStackElementAfter: true
});
}
private static _simplePaste(config: CursorConfiguration, model: ICursorSimpleModel, selections: Selection[], text: string, pasteOnNewLine: boolean): EditOperationResult {
let commands: ICommand[] = [];
for (let i = 0, len = selections.length; i < len; i++) {
const selection = selections[i];
let position = selection.getPosition();
if (pasteOnNewLine && !selection.isEmpty()) {
pasteOnNewLine = false;
}
if (pasteOnNewLine && text.indexOf('\n') !== text.length - 1) {
pasteOnNewLine = false;
}
if (pasteOnNewLine) {
// Paste entire line at the beginning of line
let typeSelection = new Range(position.lineNumber, 1, position.lineNumber, 1);
commands[i] = new ReplaceCommandThatPreservesSelection(typeSelection, text, selection, true);
} else {
commands[i] = new ReplaceCommand(selection, text);
}
}
return new EditOperationResult(EditOperationType.Other, commands, {
shouldPushStackElementBefore: true,
shouldPushStackElementAfter: true
});
}
private static _distributePasteToCursors(config: CursorConfiguration, selections: Selection[], text: string, pasteOnNewLine: boolean, multicursorText: string[]): string[] | null {
if (pasteOnNewLine) {
return null;
}
if (selections.length === 1) {
return null;
}
if (multicursorText && multicursorText.length === selections.length) {
return multicursorText;
}
if (config.multiCursorPaste === 'spread') {
// Try to spread the pasted text in case the line count matches the cursor count
// Remove trailing \n if present
if (text.charCodeAt(text.length - 1) === CharCode.LineFeed) {
text = text.substr(0, text.length - 1);
}
// Remove trailing \r if present
if (text.charCodeAt(text.length - 1) === CharCode.CarriageReturn) {
text = text.substr(0, text.length - 1);
}
let lines = strings.splitLines(text);
if (lines.length === selections.length) {
return lines;
}
}
return null;
}
public static paste(config: CursorConfiguration, model: ICursorSimpleModel, selections: Selection[], text: string, pasteOnNewLine: boolean, multicursorText: string[]): EditOperationResult {
const distributedPaste = this._distributePasteToCursors(config, selections, text, pasteOnNewLine, multicursorText);
if (distributedPaste) {
selections = selections.sort(Range.compareRangesUsingStarts);
return this._distributedPaste(config, model, selections, distributedPaste);
} else {
return this._simplePaste(config, model, selections, text, pasteOnNewLine);
}
}
private static _goodIndentForLine(config: CursorConfiguration, model: ITextModel, lineNumber: number): string | null {
let action: IndentAction | EnterAction | null = null;
let indentation: string = '';
const expectedIndentAction = LanguageConfigurationRegistry.getInheritIndentForLine(config.autoIndent, model, lineNumber, false);
if (expectedIndentAction) {
action = expectedIndentAction.action;
indentation = expectedIndentAction.indentation;
} else if (lineNumber > 1) {
let lastLineNumber: number;
for (lastLineNumber = lineNumber - 1; lastLineNumber >= 1; lastLineNumber--) {
const lineText = model.getLineContent(lastLineNumber);
const nonWhitespaceIdx = strings.lastNonWhitespaceIndex(lineText);
if (nonWhitespaceIdx >= 0) {
break;
}
}
if (lastLineNumber < 1) {
// No previous line with content found
return null;
}
const maxColumn = model.getLineMaxColumn(lastLineNumber);
const expectedEnterAction = LanguageConfigurationRegistry.getEnterAction(config.autoIndent, model, new Range(lastLineNumber, maxColumn, lastLineNumber, maxColumn));
if (expectedEnterAction) {
indentation = expectedEnterAction.indentation + expectedEnterAction.appendText;
}
}
if (action) {
if (action === IndentAction.Indent) {
indentation = TypeOperations.shiftIndent(config, indentation);
}
if (action === IndentAction.Outdent) {
indentation = TypeOperations.unshiftIndent(config, indentation);
}
indentation = config.normalizeIndentation(indentation);
}
if (!indentation) {
return null;
}
return indentation;
}
private static _replaceJumpToNextIndent(config: CursorConfiguration, model: ICursorSimpleModel, selection: Selection, insertsAutoWhitespace: boolean): ReplaceCommand {
let typeText = '';
let position = selection.getStartPosition();
if (config.insertSpaces) {
let visibleColumnFromColumn = CursorColumns.visibleColumnFromColumn2(config, model, position);
let indentSize = config.indentSize;
let spacesCnt = indentSize - (visibleColumnFromColumn % indentSize);
for (let i = 0; i < spacesCnt; i++) {
typeText += ' ';
}
} else {
typeText = '\t';
}
return new ReplaceCommand(selection, typeText, insertsAutoWhitespace);
}
public static tab(config: CursorConfiguration, model: ITextModel, selections: Selection[]): ICommand[] {
let commands: ICommand[] = [];
for (let i = 0, len = selections.length; i < len; i++) {
const selection = selections[i];
if (selection.isEmpty()) {
let lineText = model.getLineContent(selection.startLineNumber);
if (/^\s*$/.test(lineText) && model.isCheapToTokenize(selection.startLineNumber)) {
let goodIndent = this._goodIndentForLine(config, model, selection.startLineNumber);
goodIndent = goodIndent || '\t';
let possibleTypeText = config.normalizeIndentation(goodIndent);
if (!lineText.startsWith(possibleTypeText)) {
commands[i] = new ReplaceCommand(new Range(selection.startLineNumber, 1, selection.startLineNumber, lineText.length + 1), possibleTypeText, true);
continue;
}
}
commands[i] = this._replaceJumpToNextIndent(config, model, selection, true);
} else {
if (selection.startLineNumber === selection.endLineNumber) {
let lineMaxColumn = model.getLineMaxColumn(selection.startLineNumber);
if (selection.startColumn !== 1 || selection.endColumn !== lineMaxColumn) {
// This is a single line selection that is not the entire line
commands[i] = this._replaceJumpToNextIndent(config, model, selection, false);
continue;
}
}
commands[i] = new ShiftCommand(selection, {
isUnshift: false,
tabSize: config.tabSize,
indentSize: config.indentSize,
insertSpaces: config.insertSpaces,
useTabStops: config.useTabStops,
autoIndent: config.autoIndent
});
}
}
return commands;
}
public static compositionType(prevEditOperationType: EditOperationType, config: CursorConfiguration, model: ITextModel, selections: Selection[], text: string, replacePrevCharCnt: number, replaceNextCharCnt: number, positionDelta: number): EditOperationResult {
const commands = selections.map(selection => this._compositionType(model, selection, text, replacePrevCharCnt, replaceNextCharCnt, positionDelta));
return new EditOperationResult(EditOperationType.TypingOther, commands, {
shouldPushStackElementBefore: shouldPushStackElementBetween(prevEditOperationType, EditOperationType.TypingOther),
shouldPushStackElementAfter: false
});
}
private static _compositionType(model: ITextModel, selection: Selection, text: string, replacePrevCharCnt: number, replaceNextCharCnt: number, positionDelta: number): ICommand | null {
if (!selection.isEmpty()) {
// looks like https://github.com/microsoft/vscode/issues/2773
// where a cursor operation occurred before a canceled composition
// => ignore composition
return null;
}
const pos = selection.getPosition();
const startColumn = Math.max(1, pos.column - replacePrevCharCnt);
const endColumn = Math.min(model.getLineMaxColumn(pos.lineNumber), pos.column + replaceNextCharCnt);
const range = new Range(pos.lineNumber, startColumn, pos.lineNumber, endColumn);
const oldText = model.getValueInRange(range);
if (oldText === text && positionDelta === 0) {
// => ignore composition that doesn't do anything
return null;
}
return new ReplaceCommandWithOffsetCursorState(range, text, 0, positionDelta);
}
private static _typeCommand(range: Range, text: string, keepPosition: boolean): ICommand {
if (keepPosition) {
return new ReplaceCommandWithoutChangingPosition(range, text, true);
} else {
return new ReplaceCommand(range, text, true);
}
}
private static _enter(config: CursorConfiguration, model: ITextModel, keepPosition: boolean, range: Range): ICommand {
if (config.autoIndent === EditorAutoIndentStrategy.None) {
return TypeOperations._typeCommand(range, '\n', keepPosition);
}
if (!model.isCheapToTokenize(range.getStartPosition().lineNumber) || config.autoIndent === EditorAutoIndentStrategy.Keep) {
let lineText = model.getLineContent(range.startLineNumber);
let indentation = strings.getLeadingWhitespace(lineText).substring(0, range.startColumn - 1);
return TypeOperations._typeCommand(range, '\n' + config.normalizeIndentation(indentation), keepPosition);
}
const r = LanguageConfigurationRegistry.getEnterAction(config.autoIndent, model, range);
if (r) {
if (r.indentAction === IndentAction.None) {
// Nothing special
return TypeOperations._typeCommand(range, '\n' + config.normalizeIndentation(r.indentation + r.appendText), keepPosition);
} else if (r.indentAction === IndentAction.Indent) {
// Indent once
return TypeOperations._typeCommand(range, '\n' + config.normalizeIndentation(r.indentation + r.appendText), keepPosition);
} else if (r.indentAction === IndentAction.IndentOutdent) {
// Ultra special
const normalIndent = config.normalizeIndentation(r.indentation);
const increasedIndent = config.normalizeIndentation(r.indentation + r.appendText);
const typeText = '\n' + increasedIndent + '\n' + normalIndent;
if (keepPosition) {
return new ReplaceCommandWithoutChangingPosition(range, typeText, true);
} else {
return new ReplaceCommandWithOffsetCursorState(range, typeText, -1, increasedIndent.length - normalIndent.length, true);
}
} else if (r.indentAction === IndentAction.Outdent) {
const actualIndentation = TypeOperations.unshiftIndent(config, r.indentation);
return TypeOperations._typeCommand(range, '\n' + config.normalizeIndentation(actualIndentation + r.appendText), keepPosition);
}
}
const lineText = model.getLineContent(range.startLineNumber);
const indentation = strings.getLeadingWhitespace(lineText).substring(0, range.startColumn - 1);
if (config.autoIndent >= EditorAutoIndentStrategy.Full) {
const ir = LanguageConfigurationRegistry.getIndentForEnter(config.autoIndent, model, range, {
unshiftIndent: (indent) => {
return TypeOperations.unshiftIndent(config, indent);
},
shiftIndent: (indent) => {
return TypeOperations.shiftIndent(config, indent);
},
normalizeIndentation: (indent) => {
return config.normalizeIndentation(indent);
}
});
if (ir) {
let oldEndViewColumn = CursorColumns.visibleColumnFromColumn2(config, model, range.getEndPosition());
const oldEndColumn = range.endColumn;
const newLineContent = model.getLineContent(range.endLineNumber);
const firstNonWhitespace = strings.firstNonWhitespaceIndex(newLineContent);
if (firstNonWhitespace >= 0) {
range = range.setEndPosition(range.endLineNumber, Math.max(range.endColumn, firstNonWhitespace + 1));
} else {
range = range.setEndPosition(range.endLineNumber, model.getLineMaxColumn(range.endLineNumber));
}
if (keepPosition) {
return new ReplaceCommandWithoutChangingPosition(range, '\n' + config.normalizeIndentation(ir.afterEnter), true);
} else {
let offset = 0;
if (oldEndColumn <= firstNonWhitespace + 1) {
if (!config.insertSpaces) {
oldEndViewColumn = Math.ceil(oldEndViewColumn / config.indentSize);
}
offset = Math.min(oldEndViewColumn + 1 - config.normalizeIndentation(ir.afterEnter).length - 1, 0);
}
return new ReplaceCommandWithOffsetCursorState(range, '\n' + config.normalizeIndentation(ir.afterEnter), 0, offset, true);
}
}
}
return TypeOperations._typeCommand(range, '\n' + config.normalizeIndentation(indentation), keepPosition);
}
private static _isAutoIndentType(config: CursorConfiguration, model: ITextModel, selections: Selection[]): boolean {
if (config.autoIndent < EditorAutoIndentStrategy.Full) {
return false;
}
for (let i = 0, len = selections.length; i < len; i++) {
if (!model.isCheapToTokenize(selections[i].getEndPosition().lineNumber)) {
return false;
}
}
return true;
}
private static _runAutoIndentType(config: CursorConfiguration, model: ITextModel, range: Range, ch: string): ICommand | null {
const currentIndentation = LanguageConfigurationRegistry.getIndentationAtPosition(model, range.startLineNumber, range.startColumn);
const actualIndentation = LanguageConfigurationRegistry.getIndentActionForType(config.autoIndent, model, range, ch, {
shiftIndent: (indentation) => {
return TypeOperations.shiftIndent(config, indentation);
},
unshiftIndent: (indentation) => {
return TypeOperations.unshiftIndent(config, indentation);
},
});
if (actualIndentation === null) {
return null;
}
if (actualIndentation !== config.normalizeIndentation(currentIndentation)) {
const firstNonWhitespace = model.getLineFirstNonWhitespaceColumn(range.startLineNumber);
if (firstNonWhitespace === 0) {
return TypeOperations._typeCommand(
new Range(range.startLineNumber, 1, range.endLineNumber, range.endColumn),
config.normalizeIndentation(actualIndentation) + ch,
false
);
} else {
return TypeOperations._typeCommand(
new Range(range.startLineNumber, 1, range.endLineNumber, range.endColumn),
config.normalizeIndentation(actualIndentation) +
model.getLineContent(range.startLineNumber).substring(firstNonWhitespace - 1, range.startColumn - 1) + ch,
false
);
}
}
return null;
}
private static _isAutoClosingOvertype(config: CursorConfiguration, model: ITextModel, selections: Selection[], autoClosedCharacters: Range[], ch: string): boolean {
if (config.autoClosingOvertype === 'never') {
return false;
}
if (!config.autoClosingPairs.autoClosingPairsCloseSingleChar.has(ch)) {
return false;
}
for (let i = 0, len = selections.length; i < len; i++) {
const selection = selections[i];
if (!selection.isEmpty()) {
return false;
}
const position = selection.getPosition();
const lineText = model.getLineContent(position.lineNumber);
const afterCharacter = lineText.charAt(position.column - 1);
if (afterCharacter !== ch) {
return false;
}
// Do not over-type quotes after a backslash
const chIsQuote = isQuote(ch);
const beforeCharacter = position.column > 2 ? lineText.charCodeAt(position.column - 2) : CharCode.Null;
if (beforeCharacter === CharCode.Backslash && chIsQuote) {
return false;
}
// Must over-type a closing character typed by the editor
if (config.autoClosingOvertype === 'auto') {
let found = false;
for (let j = 0, lenJ = autoClosedCharacters.length; j < lenJ; j++) {
const autoClosedCharacter = autoClosedCharacters[j];
if (position.lineNumber === autoClosedCharacter.startLineNumber && position.column === autoClosedCharacter.startColumn) {
found = true;
break;
}
}
if (!found) {
return false;
}
}
}
return true;
}
private static _runAutoClosingOvertype(prevEditOperationType: EditOperationType, config: CursorConfiguration, model: ITextModel, selections: Selection[], ch: string): EditOperationResult {
let commands: ICommand[] = [];
for (let i = 0, len = selections.length; i < len; i++) {
const selection = selections[i];
const position = selection.getPosition();
const typeSelection = new Range(position.lineNumber, position.column, position.lineNumber, position.column + 1);
commands[i] = new ReplaceCommand(typeSelection, ch);
}
return new EditOperationResult(EditOperationType.TypingOther, commands, {
shouldPushStackElementBefore: shouldPushStackElementBetween(prevEditOperationType, EditOperationType.TypingOther),
shouldPushStackElementAfter: false
});
}
private static _isBeforeClosingBrace(config: CursorConfiguration, lineAfter: string) {
// If the start of lineAfter can be interpretted as both a starting or ending brace, default to returning false
const nextChar = lineAfter.charAt(0);
const potentialStartingBraces = config.autoClosingPairs.autoClosingPairsOpenByStart.get(nextChar) || [];
const potentialClosingBraces = config.autoClosingPairs.autoClosingPairsCloseByStart.get(nextChar) || [];
const isBeforeStartingBrace = potentialStartingBraces.some(x => lineAfter.startsWith(x.open));
const isBeforeClosingBrace = potentialClosingBraces.some(x => lineAfter.startsWith(x.close));
return !isBeforeStartingBrace && isBeforeClosingBrace;
}
private static _findAutoClosingPairOpen(config: CursorConfiguration, model: ITextModel, positions: Position[], ch: string): StandardAutoClosingPairConditional | null {
const autoClosingPairCandidates = config.autoClosingPairs.autoClosingPairsOpenByEnd.get(ch);
if (!autoClosingPairCandidates) {
return null;
}
// Determine which auto-closing pair it is
let autoClosingPair: StandardAutoClosingPairConditional | null = null;
for (const autoClosingPairCandidate of autoClosingPairCandidates) {
if (autoClosingPair === null || autoClosingPairCandidate.open.length > autoClosingPair.open.length) {
let candidateIsMatch = true;
for (const position of positions) {
const relevantText = model.getValueInRange(new Range(position.lineNumber, position.column - autoClosingPairCandidate.open.length + 1, position.lineNumber, position.column));
if (relevantText + ch !== autoClosingPairCandidate.open) {
candidateIsMatch = false;
break;
}
}
if (candidateIsMatch) {
autoClosingPair = autoClosingPairCandidate;
}
}
}
return autoClosingPair;
}
private static _findSubAutoClosingPairClose(config: CursorConfiguration, autoClosingPair: StandardAutoClosingPairConditional): string {
if (autoClosingPair.open.length <= 1) {
return '';
}
const lastChar = autoClosingPair.close.charAt(autoClosingPair.close.length - 1);
// get candidates with the same last character as close
const subPairCandidates = config.autoClosingPairs.autoClosingPairsCloseByEnd.get(lastChar) || [];
let subPairMatch: StandardAutoClosingPairConditional | null = null;
for (const x of subPairCandidates) {
if (x.open !== autoClosingPair.open && autoClosingPair.open.includes(x.open) && autoClosingPair.close.endsWith(x.close)) {
if (!subPairMatch || x.open.length > subPairMatch.open.length) {
subPairMatch = x;
}
}
}
if (subPairMatch) {
return subPairMatch.close;
} else {
return '';
}
}
private static _getAutoClosingPairClose(config: CursorConfiguration, model: ITextModel, selections: Selection[], ch: string, insertOpenCharacter: boolean): string | null {
const chIsQuote = isQuote(ch);
const autoCloseConfig = chIsQuote ? config.autoClosingQuotes : config.autoClosingBrackets;
if (autoCloseConfig === 'never') {
return null;
}
const autoClosingPair = this._findAutoClosingPairOpen(config, model, selections.map(s => s.getPosition()), ch);
if (!autoClosingPair) {
return null;
}
const subAutoClosingPairClose = this._findSubAutoClosingPairClose(config, autoClosingPair);
let isSubAutoClosingPairPresent = true;
const shouldAutoCloseBefore = chIsQuote ? config.shouldAutoCloseBefore.quote : config.shouldAutoCloseBefore.bracket;
for (let i = 0, len = selections.length; i < len; i++) {
const selection = selections[i];
if (!selection.isEmpty()) {
return null;
}
const position = selection.getPosition();
const lineText = model.getLineContent(position.lineNumber);
const lineAfter = lineText.substring(position.column - 1);
if (!lineAfter.startsWith(subAutoClosingPairClose)) {
isSubAutoClosingPairPresent = false;
}
// Only consider auto closing the pair if an allowed character follows or if another autoclosed pair closing brace follows
if (lineText.length > position.column - 1) {
const characterAfter = lineText.charAt(position.column - 1);
const isBeforeCloseBrace = TypeOperations._isBeforeClosingBrace(config, lineAfter);
if (!isBeforeCloseBrace && !shouldAutoCloseBefore(characterAfter)) {
return null;
}
}
if (!model.isCheapToTokenize(position.lineNumber)) {
// Do not force tokenization
return null;
}
// Do not auto-close ' or " after a word character
if (autoClosingPair.open.length === 1 && chIsQuote && autoCloseConfig !== 'always') {
const wordSeparators = getMapForWordSeparators(config.wordSeparators);
if (insertOpenCharacter && position.column > 1 && wordSeparators.get(lineText.charCodeAt(position.column - 2)) === WordCharacterClass.Regular) {
return null;
}
if (!insertOpenCharacter && position.column > 2 && wordSeparators.get(lineText.charCodeAt(position.column - 3)) === WordCharacterClass.Regular) {
return null;
}
}
model.forceTokenization(position.lineNumber);
const lineTokens = model.getLineTokens(position.lineNumber);
let shouldAutoClosePair = false;
try {
shouldAutoClosePair = LanguageConfigurationRegistry.shouldAutoClosePair(autoClosingPair, lineTokens, insertOpenCharacter ? position.column : position.column - 1);
} catch (e) {
onUnexpectedError(e);
}
if (!shouldAutoClosePair) {
return null;
}
}
if (isSubAutoClosingPairPresent) {
return autoClosingPair.close.substring(0, autoClosingPair.close.length - subAutoClosingPairClose.length);
} else {
return autoClosingPair.close;
}
}
private static _runAutoClosingOpenCharType(prevEditOperationType: EditOperationType, config: CursorConfiguration, model: ITextModel, selections: Selection[], ch: string, insertOpenCharacter: boolean, autoClosingPairClose: string): EditOperationResult {
let commands: ICommand[] = [];
for (let i = 0, len = selections.length; i < len; i++) {
const selection = selections[i];
commands[i] = new TypeWithAutoClosingCommand(selection, ch, insertOpenCharacter, autoClosingPairClose);
}
return new EditOperationResult(EditOperationType.TypingOther, commands, {
shouldPushStackElementBefore: true,
shouldPushStackElementAfter: false
});
}
private static _shouldSurroundChar(config: CursorConfiguration, ch: string): boolean {
if (isQuote(ch)) {
return (config.autoSurround === 'quotes' || config.autoSurround === 'languageDefined');
} else {
// Character is a bracket
return (config.autoSurround === 'brackets' || config.autoSurround === 'languageDefined');
}
}
private static _isSurroundSelectionType(config: CursorConfiguration, model: ITextModel, selections: Selection[], ch: string): boolean {
if (!TypeOperations._shouldSurroundChar(config, ch) || !config.surroundingPairs.hasOwnProperty(ch)) {
return false;
}
const isTypingAQuoteCharacter = isQuote(ch);
for (let i = 0, len = selections.length; i < len; i++) {
const selection = selections[i];
if (selection.isEmpty()) {
return false;
}
let selectionContainsOnlyWhitespace = true;
for (let lineNumber = selection.startLineNumber; lineNumber <= selection.endLineNumber; lineNumber++) {
const lineText = model.getLineContent(lineNumber);
const startIndex = (lineNumber === selection.startLineNumber ? selection.startColumn - 1 : 0);
const endIndex = (lineNumber === selection.endLineNumber ? selection.endColumn - 1 : lineText.length);
const selectedText = lineText.substring(startIndex, endIndex);
if (/[^ \t]/.test(selectedText)) {
// this selected text contains something other than whitespace
selectionContainsOnlyWhitespace = false;
break;
}
}
if (selectionContainsOnlyWhitespace) {
return false;
}
if (isTypingAQuoteCharacter && selection.startLineNumber === selection.endLineNumber && selection.startColumn + 1 === selection.endColumn) {
const selectionText = model.getValueInRange(selection);
if (isQuote(selectionText)) {
// Typing a quote character on top of another quote character
// => disable surround selection type
return false;
}
}
}
return true;
}
private static _runSurroundSelectionType(prevEditOperationType: EditOperationType, config: CursorConfiguration, model: ITextModel, selections: Selection[], ch: string): EditOperationResult {
let commands: ICommand[] = [];
for (let i = 0, len = selections.length; i < len; i++) {
const selection = selections[i];
const closeCharacter = config.surroundingPairs[ch];
commands[i] = new SurroundSelectionCommand(selection, ch, closeCharacter);
}
return new EditOperationResult(EditOperationType.Other, commands, {
shouldPushStackElementBefore: true,
shouldPushStackElementAfter: true
});
}
private static _isTypeInterceptorElectricChar(config: CursorConfiguration, model: ITextModel, selections: Selection[]) {
if (selections.length === 1 && model.isCheapToTokenize(selections[0].getEndPosition().lineNumber)) {
return true;
}
return false;
}
private static _typeInterceptorElectricChar(prevEditOperationType: EditOperationType, config: CursorConfiguration, model: ITextModel, selection: Selection, ch: string): EditOperationResult | null {
if (!config.electricChars.hasOwnProperty(ch) || !selection.isEmpty()) {
return null;
}
let position = selection.getPosition();
model.forceTokenization(position.lineNumber);
let lineTokens = model.getLineTokens(position.lineNumber);
let electricAction: IElectricAction | null;
try {
electricAction = LanguageConfigurationRegistry.onElectricCharacter(ch, lineTokens, position.column);
} catch (e) {
onUnexpectedError(e);
return null;
}
if (!electricAction) {
return null;
}
if (electricAction.matchOpenBracket) {
let endColumn = (lineTokens.getLineContent() + ch).lastIndexOf(electricAction.matchOpenBracket) + 1;
let match = model.findMatchingBracketUp(electricAction.matchOpenBracket, {
lineNumber: position.lineNumber,
column: endColumn
});
if (match) {
if (match.startLineNumber === position.lineNumber) {
// matched something on the same line => no change in indentation
return null;
}
let matchLine = model.getLineContent(match.startLineNumber);
let matchLineIndentation = strings.getLeadingWhitespace(matchLine);
let newIndentation = config.normalizeIndentation(matchLineIndentation);
let lineText = model.getLineContent(position.lineNumber);
let lineFirstNonBlankColumn = model.getLineFirstNonWhitespaceColumn(position.lineNumber) || position.column;
let prefix = lineText.substring(lineFirstNonBlankColumn - 1, position.column - 1);
let typeText = newIndentation + prefix + ch;
let typeSelection = new Range(position.lineNumber, 1, position.lineNumber, position.column);
const command = new ReplaceCommand(typeSelection, typeText);
return new EditOperationResult(getTypingOperation(typeText, prevEditOperationType), [command], {
shouldPushStackElementBefore: false,
shouldPushStackElementAfter: true
});
}
}
return null;
}
/**
* This is very similar with typing, but the character is already in the text buffer!
*/
public static compositionEndWithInterceptors(prevEditOperationType: EditOperationType, config: CursorConfiguration, model: ITextModel, selectionsWhenCompositionStarted: Selection[] | null, selections: Selection[], autoClosedCharacters: Range[]): EditOperationResult | null {
if (!selectionsWhenCompositionStarted || Selection.selectionsArrEqual(selectionsWhenCompositionStarted, selections)) {
// no content was typed
return null;
}
let ch: string | null = null;
// extract last typed character
for (const selection of selections) {
if (!selection.isEmpty()) {
return null;
}
const position = selection.getPosition();
const currentChar = model.getValueInRange(new Range(position.lineNumber, position.column - 1, position.lineNumber, position.column));
if (ch === null) {
ch = currentChar;
} else if (ch !== currentChar) {
return null;
}
}
if (!ch) {
return null;
}
if (this._isAutoClosingOvertype(config, model, selections, autoClosedCharacters, ch)) {
// Unfortunately, the close character is at this point "doubled", so we need to delete it...
const commands = selections.map(s => new ReplaceCommand(new Range(s.positionLineNumber, s.positionColumn, s.positionLineNumber, s.positionColumn + 1), '', false));
return new EditOperationResult(EditOperationType.TypingOther, commands, {
shouldPushStackElementBefore: true,
shouldPushStackElementAfter: false
});
}
const autoClosingPairClose = this._getAutoClosingPairClose(config, model, selections, ch, false);
if (autoClosingPairClose !== null) {
return this._runAutoClosingOpenCharType(prevEditOperationType, config, model, selections, ch, false, autoClosingPairClose);
}
return null;
}
public static typeWithInterceptors(isDoingComposition: boolean, prevEditOperationType: EditOperationType, config: CursorConfiguration, model: ITextModel, selections: Selection[], autoClosedCharacters: Range[], ch: string): EditOperationResult {
if (!isDoingComposition && ch === '\n') {
let commands: ICommand[] = [];
for (let i = 0, len = selections.length; i < len; i++) {
commands[i] = TypeOperations._enter(config, model, false, selections[i]);
}
return new EditOperationResult(EditOperationType.TypingOther, commands, {
shouldPushStackElementBefore: true,
shouldPushStackElementAfter: false,
});
}
if (!isDoingComposition && this._isAutoIndentType(config, model, selections)) {
let commands: Array<ICommand | null> = [];
let autoIndentFails = false;
for (let i = 0, len = selections.length; i < len; i++) {
commands[i] = this._runAutoIndentType(config, model, selections[i], ch);
if (!commands[i]) {
autoIndentFails = true;
break;
}
}
if (!autoIndentFails) {
return new EditOperationResult(EditOperationType.TypingOther, commands, {
shouldPushStackElementBefore: true,
shouldPushStackElementAfter: false,
});
}
}
if (!isDoingComposition && this._isAutoClosingOvertype(config, model, selections, autoClosedCharacters, ch)) {
return this._runAutoClosingOvertype(prevEditOperationType, config, model, selections, ch);
}
if (!isDoingComposition) {
const autoClosingPairClose = this._getAutoClosingPairClose(config, model, selections, ch, true);
if (autoClosingPairClose) {
return this._runAutoClosingOpenCharType(prevEditOperationType, config, model, selections, ch, true, autoClosingPairClose);
}
}
if (this._isSurroundSelectionType(config, model, selections, ch)) {
return this._runSurroundSelectionType(prevEditOperationType, config, model, selections, ch);
}
// Electric characters make sense only when dealing with a single cursor,
// as multiple cursors typing brackets for example would interfer with bracket matching
if (!isDoingComposition && this._isTypeInterceptorElectricChar(config, model, selections)) {
const r = this._typeInterceptorElectricChar(prevEditOperationType, config, model, selections[0], ch);
if (r) {
return r;
}
}
// A simple character type
let commands: ICommand[] = [];
for (let i = 0, len = selections.length; i < len; i++) {
commands[i] = new ReplaceCommand(selections[i], ch);
}
const opType = getTypingOperation(ch, prevEditOperationType);
return new EditOperationResult(opType, commands, {
shouldPushStackElementBefore: shouldPushStackElementBetween(prevEditOperationType, opType),
shouldPushStackElementAfter: false
});
}
public static typeWithoutInterceptors(prevEditOperationType: EditOperationType, config: CursorConfiguration, model: ITextModel, selections: Selection[], str: string): EditOperationResult {
let commands: ICommand[] = [];
for (let i = 0, len = selections.length; i < len; i++) {
commands[i] = new ReplaceCommand(selections[i], str);
}
const opType = getTypingOperation(str, prevEditOperationType);
return new EditOperationResult(opType, commands, {
shouldPushStackElementBefore: shouldPushStackElementBetween(prevEditOperationType, opType),
shouldPushStackElementAfter: false
});
}
public static lineInsertBefore(config: CursorConfiguration, model: ITextModel | null, selections: Selection[] | null): ICommand[] {
if (model === null || selections === null) {
return [];
}
let commands: ICommand[] = [];
for (let i = 0, len = selections.length; i < len; i++) {
let lineNumber = selections[i].positionLineNumber;
if (lineNumber === 1) {
commands[i] = new ReplaceCommandWithoutChangingPosition(new Range(1, 1, 1, 1), '\n');
} else {
lineNumber--;
let column = model.getLineMaxColumn(lineNumber);
commands[i] = this._enter(config, model, false, new Range(lineNumber, column, lineNumber, column));
}
}
return commands;
}
public static lineInsertAfter(config: CursorConfiguration, model: ITextModel | null, selections: Selection[] | null): ICommand[] {
if (model === null || selections === null) {
return [];
}
let commands: ICommand[] = [];
for (let i = 0, len = selections.length; i < len; i++) {
const lineNumber = selections[i].positionLineNumber;
let column = model.getLineMaxColumn(lineNumber);
commands[i] = this._enter(config, model, false, new Range(lineNumber, column, lineNumber, column));
}
return commands;
}
public static lineBreakInsert(config: CursorConfiguration, model: ITextModel, selections: Selection[]): ICommand[] {
let commands: ICommand[] = [];
for (let i = 0, len = selections.length; i < len; i++) {
commands[i] = this._enter(config, model, true, selections[i]);
}
return commands;
}
}
export class TypeWithAutoClosingCommand extends ReplaceCommandWithOffsetCursorState {
private readonly _openCharacter: string;
private readonly _closeCharacter: string;
public closeCharacterRange: Range | null;
public enclosingRange: Range | null;
constructor(selection: Selection, openCharacter: string, insertOpenCharacter: boolean, closeCharacter: string) {
super(selection, (insertOpenCharacter ? openCharacter : '') + closeCharacter, 0, -closeCharacter.length);
this._openCharacter = openCharacter;
this._closeCharacter = closeCharacter;
this.closeCharacterRange = null;
this.enclosingRange = null;
}
public override computeCursorState(model: ITextModel, helper: ICursorStateComputerData): Selection {
let inverseEditOperations = helper.getInverseEditOperations();
let range = inverseEditOperations[0].range;
this.closeCharacterRange = new Range(range.startLineNumber, range.endColumn - this._closeCharacter.length, range.endLineNumber, range.endColumn);
this.enclosingRange = new Range(range.startLineNumber, range.endColumn - this._openCharacter.length - this._closeCharacter.length, range.endLineNumber, range.endColumn);
return super.computeCursorState(model, helper);
}
}
function getTypingOperation(typedText: string, previousTypingOperation: EditOperationType): EditOperationType {
if (typedText === ' ') {
return previousTypingOperation === EditOperationType.TypingFirstSpace
|| previousTypingOperation === EditOperationType.TypingConsecutiveSpace
? EditOperationType.TypingConsecutiveSpace
: EditOperationType.TypingFirstSpace;
}
return EditOperationType.TypingOther;
}
function shouldPushStackElementBetween(previousTypingOperation: EditOperationType, typingOperation: EditOperationType): boolean {
if (isTypingOperation(previousTypingOperation) && !isTypingOperation(typingOperation)) {
// Always set an undo stop before non-type operations
return true;
}
if (previousTypingOperation === EditOperationType.TypingFirstSpace) {
// `abc |d`: No undo stop
// `abc |d`: Undo stop
return false;
}
// Insert undo stop between different operation types
return normalizeOperationType(previousTypingOperation) !== normalizeOperationType(typingOperation);
}
function normalizeOperationType(type: EditOperationType): EditOperationType | 'space' {
return (type === EditOperationType.TypingConsecutiveSpace || type === EditOperationType.TypingFirstSpace)
? 'space'
: type;
}
function isTypingOperation(type: EditOperationType): boolean {
return type === EditOperationType.TypingOther