94 lines
2.5 KiB
TypeScript
94 lines
2.5 KiB
TypeScript
'use strict'
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import { Position, Range, TextEdit } from 'vscode-languageserver-types'
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import { getEnd } from '../util/position'
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import { getChangedPosition } from '../util/textedit'
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import { isSurrondChange, SurrondChange, TextChange } from './util'
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const logger = require('../util/logger')('cursors-range')
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export default class TextRange {
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private start: Position
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private end: Position
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private _text: string
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constructor(line: number, character: number, text: string) {
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this.start = Position.create(line, character)
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this._text = text
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this.end = getEnd(this.start, this._text)
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}
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public get position(): Position {
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return this.start
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}
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public get line(): number {
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return this.start.line
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}
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public get text(): string {
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return this._text
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}
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public get range(): Range {
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return Range.create(this.start, this.end)
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}
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public get textEdit(): TextEdit {
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return {
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range: this.range,
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newText: this.text
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}
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}
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public applyChange(change: SurrondChange | TextChange): void {
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if (isSurrondChange(change)) {
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this.applySurrondChange(change)
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} else {
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this.applyTextChange(change)
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}
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}
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public applySurrondChange(change: SurrondChange): void {
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let { prepend, append } = change
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let len = this._text.length
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let text = this._text.substring(prepend[0], len - append[0])
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this._text = `${prepend[1]}${text}${append[1]}`
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}
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public applyTextChange(change: TextChange): void {
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let { text } = this
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let { offset, remove, fromEnd, insert } = change
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if (fromEnd) offset = -offset
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let pre = text.slice(0, fromEnd && offset == 0 ? text.length : offset)
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let after = text.slice(pre.length)
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if (remove) after = after.slice(remove)
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this._text = `${pre}${insert || ''}${after}`
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}
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/**
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* Adjust range
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*/
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public move(delta: number): void {
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if (delta != 0) {
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let { line, character } = this.start
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this.start = Position.create(line, character + delta)
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}
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this.end = getEnd(this.start, this._text)
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}
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public adjustFromEdit(edit: TextEdit): number {
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let changed = getChangedPosition(this.start, edit)
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if (changed.line || changed.character) {
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let { line, character } = this.start
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this.start = Position.create(line + changed.line, character + changed.character)
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this.end = getEnd(this.start, this._text)
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}
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return changed.character
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}
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public isBefore(range: TextRange): boolean {
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let { position } = range
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let { line, character } = this.start
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return position.line == line && position.character > character
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}
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}
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