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| 1 | +import { URI } from "vscode-uri"; |
| 2 | +import { |
| 3 | + EndOfLine, |
| 4 | + Position, |
| 5 | + Range, |
| 6 | + Selection, |
| 7 | + TextDocument, |
| 8 | + TextEditor, |
| 9 | + TextEditorOptions, |
| 10 | + TextLine, |
| 11 | +} from ".."; |
| 12 | + |
| 13 | +// See the TextLine, TextEditor, and TextDocument interfaces |
| 14 | +// for documentation of these classes and their fields. |
| 15 | + |
| 16 | +export class MockTextLine implements TextLine { |
| 17 | + readonly lineNumber: number; |
| 18 | + readonly text: string; |
| 19 | + readonly range: Range; |
| 20 | + readonly rangeIncludingLineBreak: Range; |
| 21 | + readonly firstNonWhitespaceCharacterIndex: number; |
| 22 | + readonly lastNonWhitespaceCharacterIndex: number; |
| 23 | + readonly isEmptyOrWhitespace: boolean; |
| 24 | + |
| 25 | + constructor(lineNumber: number, text: string) { |
| 26 | + if (lineNumber < 0) { |
| 27 | + throw new Error("lineNumber must be non-negative"); |
| 28 | + } |
| 29 | + this.lineNumber = lineNumber; |
| 30 | + // capture any trailing \r\n or \n as eol (possibly neither is present) |
| 31 | + const eol = text.match(/(\r?\n)$/)?.[1] ?? ""; |
| 32 | + if (eol.length > 0) { |
| 33 | + this.text = text.slice(0, -eol.length); |
| 34 | + } else { |
| 35 | + this.text = text; |
| 36 | + } |
| 37 | + this.range = new Range( |
| 38 | + this.lineNumber, |
| 39 | + 0, |
| 40 | + this.lineNumber, |
| 41 | + this.text.length, |
| 42 | + ); |
| 43 | + this.rangeIncludingLineBreak = new Range( |
| 44 | + this.lineNumber, |
| 45 | + 0, |
| 46 | + this.lineNumber, |
| 47 | + this.text.length + eol.length, |
| 48 | + ); |
| 49 | + const first = this.text.search(/\S/); |
| 50 | + this.firstNonWhitespaceCharacterIndex = |
| 51 | + first === -1 ? this.text.length : first; |
| 52 | + const all = this.text.match(/\S/g); |
| 53 | + this.lastNonWhitespaceCharacterIndex = all |
| 54 | + ? this.text.lastIndexOf(all[all.length - 1]) |
| 55 | + : 0; |
| 56 | + this.isEmptyOrWhitespace = |
| 57 | + this.firstNonWhitespaceCharacterIndex === this.text.length; |
| 58 | + } |
| 59 | +} |
| 60 | + |
| 61 | +export class MockTextDocument implements TextDocument { |
| 62 | + readonly uri: URI; |
| 63 | + readonly languageId: string; |
| 64 | + readonly version: number; |
| 65 | + readonly range: Range; |
| 66 | + readonly eol: EndOfLine; |
| 67 | + private lines: MockTextLine[]; |
| 68 | + private contents: string; |
| 69 | + |
| 70 | + constructor(filename: string, languageId: string, contents: string) { |
| 71 | + this.uri = URI.file(filename); |
| 72 | + this.languageId = languageId; |
| 73 | + this.version = 1; |
| 74 | + this.contents = contents; |
| 75 | + const rawLines: string[] = contents.match(/[^\n]*\n|[^\n]+/g) ?? []; |
| 76 | + this.lines = rawLines.map((line, i) => { |
| 77 | + return new MockTextLine(i, line); |
| 78 | + }); |
| 79 | + if (this.lines.length === 0) { |
| 80 | + this.range = new Range(0, 0, 0, 0); |
| 81 | + } else { |
| 82 | + const lastLineRange = this.lines[this.lines.length - 1].range; |
| 83 | + this.range = new Range( |
| 84 | + 0, |
| 85 | + 0, |
| 86 | + lastLineRange.end.line, |
| 87 | + lastLineRange.end.character, |
| 88 | + ); |
| 89 | + } |
| 90 | + this.eol = "LF"; |
| 91 | + } |
| 92 | + |
| 93 | + get lineCount(): number { |
| 94 | + return this.lines.length; |
| 95 | + } |
| 96 | + |
| 97 | + public lineAt(x: number | Position): TextLine { |
| 98 | + if (typeof x === "number") { |
| 99 | + return this.lines[x]; |
| 100 | + } |
| 101 | + return this.lines[x.line]; |
| 102 | + } |
| 103 | + |
| 104 | + public offsetAt(position: Position): number { |
| 105 | + let offset = 0; |
| 106 | + for (let i = 0; i < position.line; i++) { |
| 107 | + offset += this.lineAt(i).rangeIncludingLineBreak.end.character; |
| 108 | + } |
| 109 | + offset += position.character; |
| 110 | + return offset; |
| 111 | + } |
| 112 | + |
| 113 | + public positionAt(offset: number): Position { |
| 114 | + let line = 0; |
| 115 | + while (offset >= this.lineAt(line).rangeIncludingLineBreak.end.character) { |
| 116 | + offset -= this.lineAt(line).rangeIncludingLineBreak.end.character; |
| 117 | + line++; |
| 118 | + } |
| 119 | + return new Position(line, offset); |
| 120 | + } |
| 121 | + |
| 122 | + public getText(range?: Range): string { |
| 123 | + if (range === undefined) { |
| 124 | + return this.contents; |
| 125 | + } |
| 126 | + const startOffset = this.offsetAt(range.start); |
| 127 | + const endOffset = this.offsetAt(range.end); |
| 128 | + return this.contents.slice(startOffset, endOffset); |
| 129 | + } |
| 130 | +} |
| 131 | + |
| 132 | +export class MockTextEditor implements TextEditor { |
| 133 | + public primarySelection: Selection; |
| 134 | + readonly id: string; |
| 135 | + readonly document: TextDocument; |
| 136 | + readonly options: TextEditorOptions; |
| 137 | + readonly isActive: boolean; |
| 138 | + |
| 139 | + constructor(document: TextDocument, active: boolean) { |
| 140 | + this.id = document.uri.toString(); |
| 141 | + this.document = document; |
| 142 | + this.primarySelection = new Selection(0, 0, 0, 0); |
| 143 | + this.options = new DefaultTextEditorOptions(); |
| 144 | + this.isActive = active; |
| 145 | + // TODO: support visible ranges, multiple selections, options |
| 146 | + } |
| 147 | + |
| 148 | + get visibleRanges(): Range[] { |
| 149 | + return [this.document.range]; |
| 150 | + } |
| 151 | + |
| 152 | + get selections(): Selection[] { |
| 153 | + return [this.primarySelection]; |
| 154 | + } |
| 155 | + |
| 156 | + isEqual(other: TextEditor): boolean { |
| 157 | + return this.id === other.id; |
| 158 | + } |
| 159 | +} |
| 160 | + |
| 161 | +class DefaultTextEditorOptions implements TextEditorOptions { |
| 162 | + get tabSize(): number | string { |
| 163 | + return 4; |
| 164 | + } |
| 165 | + |
| 166 | + get insertSpaces(): boolean | string { |
| 167 | + return true; |
| 168 | + } |
| 169 | +} |
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