Class LangiumGrammarSemanticTokenProvider

A basic super class for providing semantic token data. Users of Langium should extend this class to create their own SemanticTokenProvider.

The entry method for generating semantic tokens based on an AstNode is the highlightElement method.

Hierarchy (view full)

AbstractSemanticTokenProvider
- LangiumGrammarSemanticTokenProvider

Constructors

constructor

new LangiumGrammarSemanticTokenProvider(services): LangiumGrammarSemanticTokenProvider
Parameters
- services: LangiumServices
Returns LangiumGrammarSemanticTokenProvider
Inherited from AbstractSemanticTokenProvider.constructor
- Defined in packages/langium/src/lsp/semantic-token-provider.ts:246

Properties

`Protected` `Optional`clientCapabilities

clientCapabilities?: SemanticTokensClientCapabilities

`Protected` `Optional`currentDocument

currentDocument?: LangiumDocument<AstNode>

`Protected` `Optional`currentRange

currentRange?: Range

`Protected` `Optional`currentTokensBuilder

currentTokensBuilder?: SemanticTokensBuilder

`Protected`tokensBuilders

tokensBuilders: Map<string, SemanticTokensBuilder> = ...

Store a token builder for each open document.

Accessors

semanticTokensOptions

get semanticTokensOptions(): SemanticTokensOptions
Returns SemanticTokensOptions
Inherited from AbstractSemanticTokenProvider.semanticTokensOptions
- Defined in packages/langium/src/lsp/semantic-token-provider.ts:268

tokenModifiers

get tokenModifiers(): Record<string, number>
Returns Record<string, number>
Inherited from AbstractSemanticTokenProvider.tokenModifiers
- Defined in packages/langium/src/lsp/semantic-token-provider.ts:264

tokenTypes

get tokenTypes(): Record<string, number>
Returns Record<string, number>
Inherited from AbstractSemanticTokenProvider.tokenTypes
- Defined in packages/langium/src/lsp/semantic-token-provider.ts:260

Methods

`Protected`computeHighlighting

computeHighlighting(document, acceptor, cancelToken): Promise<void>
Parameters
- document: LangiumDocument<AstNode>
- acceptor: SemanticTokenAcceptor
- cancelToken: CancellationToken
Returns Promise<void>
Inherited from AbstractSemanticTokenProvider.computeHighlighting
- Defined in packages/langium/src/lsp/semantic-token-provider.ts:352

`Protected`createAcceptor

createAcceptor(): SemanticTokenAcceptor
Returns SemanticTokenAcceptor
Inherited from AbstractSemanticTokenProvider.createAcceptor
- Defined in packages/langium/src/lsp/semantic-token-provider.ts:308

`Protected`getDocumentTokensBuilder

getDocumentTokensBuilder(document): SemanticTokensBuilder
Parameters
- document: LangiumDocument<AstNode>
Returns SemanticTokensBuilder
Inherited from AbstractSemanticTokenProvider.getDocumentTokensBuilder
- Defined in packages/langium/src/lsp/semantic-token-provider.ts:342

`Protected`highlightElement

highlightElement(node, acceptor): void
Parameters
- node: AstNode
- acceptor: SemanticTokenAcceptor
Returns void
'prune' to skip the children of this element, nothing otherwise.
Overrides AbstractSemanticTokenProvider.highlightElement
- Defined in packages/langium/src/grammar/lsp/grammar-semantic-tokens.ts:15

initialize

initialize(clientCapabilities?): void
Parameters
- OptionalclientCapabilities: SemanticTokensClientCapabilities
Returns void
Inherited from AbstractSemanticTokenProvider.initialize
- Defined in packages/langium/src/lsp/semantic-token-provider.ts:256

semanticHighlight

semanticHighlight(document, _params, cancelToken?): Promise<SemanticTokens>
Parameters
- document: LangiumDocument<AstNode>
- _params: SemanticTokensParams
- cancelToken: CancellationToken = CancellationToken.None
Returns Promise<SemanticTokens>
Inherited from AbstractSemanticTokenProvider.semanticHighlight
- Defined in packages/langium/src/lsp/semantic-token-provider.ts:281

semanticHighlightDelta

semanticHighlightDelta(document, params, cancelToken?): Promise<SemanticTokens | SemanticTokensDelta>
Parameters
- document: LangiumDocument<AstNode>
- params: SemanticTokensDeltaParams
- cancelToken: CancellationToken = CancellationToken.None
Returns Promise<SemanticTokens | SemanticTokensDelta>
Inherited from AbstractSemanticTokenProvider.semanticHighlightDelta
- Defined in packages/langium/src/lsp/semantic-token-provider.ts:299

semanticHighlightRange

semanticHighlightRange(document, params, cancelToken?): Promise<SemanticTokens>
Parameters
- document: LangiumDocument<AstNode>
- params: SemanticTokensRangeParams
- cancelToken: CancellationToken = CancellationToken.None
Returns Promise<SemanticTokens>
Inherited from AbstractSemanticTokenProvider.semanticHighlightRange
- Defined in packages/langium/src/lsp/semantic-token-provider.ts:290

Class LangiumGrammarSemanticTokenProvider

Hierarchy (view full)

Index

Constructors

Properties

Accessors

Methods

Constructors

constructor

Parameters

Returns LangiumGrammarSemanticTokenProvider

Properties

Protected OptionalclientCapabilities

Protected OptionalcurrentDocument

Protected OptionalcurrentRange

Protected OptionalcurrentTokensBuilder

ProtectedtokensBuilders

Accessors

semanticTokensOptions

Returns SemanticTokensOptions

tokenModifiers

Returns Record<string, number>

tokenTypes

Returns Record<string, number>

Methods

ProtectedcomputeHighlighting

Parameters

Returns Promise<void>

ProtectedcreateAcceptor

Returns SemanticTokenAcceptor

ProtectedgetDocumentTokensBuilder

Parameters

Returns SemanticTokensBuilder

ProtectedhighlightElement

Parameters

Returns void

ProtectedhighlightKeyword

Parameters

Returns void

ProtectedhighlightNode

Parameters

Returns void

ProtectedhighlightProperty

Type Parameters

Parameters

Returns void

ProtectedhighlightToken

Parameters

Returns void

initialize

Parameters

Returns void

semanticHighlight

Parameters

Returns Promise<SemanticTokens>

semanticHighlightDelta

Parameters

Returns Promise<SemanticTokens | SemanticTokensDelta>

semanticHighlightRange

Parameters

Returns Promise<SemanticTokens>

Settings

On This Page

`Protected` `Optional`clientCapabilities

`Protected` `Optional`currentDocument

`Protected` `Optional`currentRange

`Protected` `Optional`currentTokensBuilder

`Protected`tokensBuilders

`Protected`computeHighlighting

`Protected`createAcceptor

`Protected`getDocumentTokensBuilder

`Protected`highlightElement

`Protected`highlightKeyword

`Protected`highlightNode

`Protected`highlightProperty

`Protected`highlightToken