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105 changes: 105 additions & 0 deletions
105
languageServer/src/languageHelpers/baseLanguageHelper.ts
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,105 @@ | ||
| import { has } from 'lodash' | ||
| import { TextDocument } from 'vscode-languageserver-textdocument' | ||
| import { | ||
| DocumentSymbol, | ||
| Position, | ||
| Location, | ||
| SymbolKind | ||
| } from 'vscode-languageserver/node' | ||
|
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| export interface LanguageHelper { | ||
| findSymbolAtPosition(position: Position): DocumentSymbol | undefined | ||
| findLocationsFor(symbol: DocumentSymbol): Location[] | ||
| } | ||
|
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| export abstract class BaseLanguageHelper<RootNode> implements LanguageHelper { | ||
| protected textDocument: TextDocument | ||
| protected rootNode?: RootNode | ||
|
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| constructor(textDocument: TextDocument) { | ||
| this.textDocument = textDocument | ||
| this.rootNode = this.parse(this.getText()) | ||
| } | ||
|
|
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| public findSymbolAtPosition(position: Position): DocumentSymbol | undefined { | ||
| const cursorOffset: number = this.offsetAt(position) | ||
| const symbolsAroundOffset = this.findEnclosingSymbols(cursorOffset) | ||
|
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| const symbolStack = symbolsAroundOffset.sort((a, b) => { | ||
| const offA = this.offsetAt(a.range.end) - this.offsetAt(a.range.start) | ||
| const offB = this.offsetAt(b.range.end) - this.offsetAt(b.range.start) | ||
|
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| return offB - offA // We want the tighter fits for last, so we can just pop them | ||
| }) | ||
|
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| return [...symbolStack].pop() | ||
| } | ||
|
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| public findLocationsFor(symbol: DocumentSymbol): Location[] { | ||
| if (symbol.kind === SymbolKind.Property) { | ||
| return this.findLocationsForPropertySymbol(symbol) | ||
| } | ||
|
|
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| return this.findLocationsForNormalSymbol(symbol) | ||
| } | ||
|
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| protected getText() { | ||
| return this.textDocument.getText() | ||
| } | ||
|
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| protected offsetAt(position: Position) { | ||
| return this.textDocument.offsetAt(position) | ||
| } | ||
|
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| protected positionAt(offset: number) { | ||
| return this.textDocument.positionAt(offset) | ||
| } | ||
|
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| private findLocationsForPropertySymbol(symbol: DocumentSymbol) { | ||
| const propertyPath = symbol.detail | ||
| const itIsHere = propertyPath && this.hasProperty(propertyPath) | ||
|
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| if (itIsHere) { | ||
| const pathArray = propertyPath.split('.') | ||
| const location = this.getPropertyLocation(pathArray) | ||
|
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| return location ? [location] : [] | ||
| } | ||
|
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| return this.findLocationsForNormalSymbol(symbol) | ||
| } | ||
|
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| private findLocationsForNormalSymbol(symbol: DocumentSymbol) { | ||
| const parts = symbol.name.split(/\s/g) | ||
| const txt = this.getText() | ||
|
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| const acc: Location[] = [] | ||
| for (const str of parts) { | ||
| const index = txt.indexOf(str) | ||
| if (index <= 0) { | ||
| continue | ||
| } | ||
| const pos = this.positionAt(index) | ||
| const range = this.findSymbolAtPosition(pos)?.range | ||
|
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| if (range) { | ||
| acc.push(Location.create(this.textDocument.uri, range)) | ||
| } | ||
| } | ||
| return acc | ||
| } | ||
|
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| private hasProperty(path: string) { | ||
| const parsedObj = this.toJSON() | ||
|
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| return has(parsedObj, path) | ||
| } | ||
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| protected abstract parse(source: string): RootNode | undefined | ||
| protected abstract findEnclosingSymbols(offset: number): DocumentSymbol[] | ||
| protected abstract getPropertyLocation( | ||
| pathArray: Array<string | number> | ||
| ): Location | null | ||
|
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||
| protected abstract toJSON(): unknown | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,18 @@ | ||
| import { TextDocument } from 'vscode-languageserver-textdocument' | ||
| import { JsonHelper } from './jsonHelper' | ||
| import { PlainTextHelper } from './plainTextHelper' | ||
| import { YamlHelper } from './yamlHelper' | ||
|
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| export const createLanguageHelper = (textDocument: TextDocument) => { | ||
| const language = textDocument.languageId | ||
|
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| if (language === 'yaml') { | ||
| return new YamlHelper(textDocument) | ||
| } | ||
|
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| if (language === 'json') { | ||
| return new JsonHelper(textDocument) | ||
| } | ||
|
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| return new PlainTextHelper(textDocument) | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,34 @@ | ||
| import { findNodeAtLocation, getNodeValue, Node, parseTree } from 'jsonc-parser' | ||
| import { DocumentSymbol, Location, Range } from 'vscode-languageserver' | ||
| import { BaseLanguageHelper } from './baseLanguageHelper' | ||
|
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| export class JsonHelper extends BaseLanguageHelper<Node> { | ||
| protected parse(source: string) { | ||
| return parseTree(source) | ||
| } | ||
|
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| protected findEnclosingSymbols(): DocumentSymbol[] { | ||
| return [] | ||
| } | ||
|
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| protected getPropertyLocation( | ||
| pathArray: Array<string | number> | ||
| ): Location | null { | ||
| const node = this.rootNode && findNodeAtLocation(this.rootNode, pathArray) | ||
|
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| if (!node) { | ||
| return null | ||
| } | ||
| const nodeSrcIndex = node.offset | ||
| const nodeSrcLength = node.length | ||
| const nodeEnd = nodeSrcIndex + nodeSrcLength | ||
| const start = this.positionAt(nodeSrcIndex) | ||
| const end = this.positionAt(nodeEnd) | ||
| const range = Range.create(start, end) | ||
| return Location.create(this.textDocument.uri, range) | ||
| } | ||
|
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| protected toJSON(): unknown { | ||
| return this.rootNode ? getNodeValue(this.rootNode) : undefined | ||
| } | ||
| } |
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