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| import type { AstNode, AstNodeDescription, AstReflection, IndexManager, LangiumDocument, LangiumDocuments, Reference, ReferenceInfo, Scope, ScopeProvider, Stream, URI } from 'langium'; | ||
| import type { XsmpcatServices } from '../xsmpcat-module.js'; | ||
| import * as ast from '../generated/ast.js'; | ||
| import { AstUtils, DocumentCache, EMPTY_SCOPE, WorkspaceCache, stream } from 'langium'; | ||
| import * as ProjectUtils from '../utils/project-utils.js'; | ||
| import type { XsmpTypeProvider } from './type-provider.js'; | ||
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| export class XsmpcatScopeProvider implements ScopeProvider { | ||
| protected documents: LangiumDocuments; | ||
| protected readonly visibleUris: WorkspaceCache<URI, Set<string> | undefined>; | ||
| protected readonly reflection: AstReflection; | ||
| protected readonly indexManager: IndexManager; | ||
| protected readonly typeProvider: XsmpTypeProvider; | ||
| protected readonly globalScopeCache: WorkspaceCache<URI, Scope>; | ||
| protected readonly contexts: Set<Reference> = new Set<Reference>(); | ||
| protected readonly precomputedCache: DocumentCache<AstNode, Map<string, AstNodeDescription>>; | ||
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| constructor(services: XsmpcatServices) { | ||
| this.documents = services.shared.workspace.LangiumDocuments; | ||
| this.visibleUris = new WorkspaceCache<URI, Set<string> | undefined>(services.shared); | ||
| this.reflection = services.shared.AstReflection; | ||
| this.indexManager = services.shared.workspace.IndexManager; | ||
| this.typeProvider = services.shared.TypeProvider; | ||
| this.globalScopeCache = new WorkspaceCache<URI, Scope>(services.shared); | ||
| this.precomputedCache = new DocumentCache<AstNode, Map<string, AstNodeDescription>>(services.shared); | ||
| } | ||
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| protected collectScopesFromNode(node: AstNode, scopes: Array<Map<string, AstNodeDescription>>, | ||
| document: LangiumDocument) { | ||
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| const precomputed = this.getPrecomputedScope(node, document); | ||
| if (precomputed.size > 0) { | ||
| scopes.push(precomputed); | ||
| } | ||
| switch (node.$type) { | ||
| case ast.Model: | ||
| case ast.Service: { | ||
| const component = node as ast.Component; | ||
| if (component.base) { | ||
| this.collectScopesFromReference(component.base, scopes); | ||
| } | ||
| component.interface.forEach(i => this.collectScopesFromReference(i, scopes)); | ||
| break; | ||
| } | ||
| case ast.Interface: { | ||
| (node as ast.Interface).base.forEach(i => this.collectScopesFromReference(i, scopes)); | ||
| break; | ||
| } | ||
| case ast.Class: | ||
| case ast.Exception: { | ||
| const clazz = node as ast.Class; | ||
| if (clazz.base) | ||
| this.collectScopesFromReference(clazz.base, scopes); | ||
| break; | ||
| } | ||
| } | ||
| } | ||
| protected collectScopesFromReference(node: Reference, scopes: Array<Map<string, AstNodeDescription>>) { | ||
| // Check if the node is currently processed to avoid cyclic dependency | ||
| if (!this.contexts.has(node) && node.ref) { | ||
| this.contexts.add(node); | ||
| try { | ||
| this.collectScopesFromNode(node.ref, scopes, AstUtils.getDocument(node.ref)); | ||
| } | ||
| finally { | ||
| // Remove the context | ||
| this.contexts.delete(node); | ||
| } | ||
| } | ||
| } | ||
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| getScope(context: ReferenceInfo): Scope { | ||
| // Store the context | ||
| this.contexts.add(context.reference); | ||
| try { | ||
| return this.computeScope(context); | ||
| } | ||
| finally { | ||
| // Remove the context | ||
| this.contexts.delete(context.reference); | ||
| } | ||
| } | ||
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| private computeScope(context: ReferenceInfo): Scope { | ||
| let parent: Scope; | ||
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| const scopes: Array<Map<string, AstNodeDescription>> = []; | ||
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| if (ast.DesignatedInitializer === context.container.$type && context.property === 'field') { | ||
| if (context.container.$container) { | ||
| const type = this.typeProvider.getType(context.container.$container); | ||
| switch (type?.$type) { | ||
| case ast.Structure: | ||
| case ast.Class: | ||
| case ast.Exception: | ||
| this.collectScopesFromNode(type, scopes, AstUtils.getDocument(type)); | ||
| parent = EMPTY_SCOPE; | ||
| break; | ||
| default: return EMPTY_SCOPE; | ||
| } | ||
| } | ||
| else { | ||
| return EMPTY_SCOPE; | ||
| } | ||
| } | ||
| else { | ||
| let currentNode = context.container.$container; | ||
| const document = AstUtils.getDocument(context.container); | ||
| parent = this.getGlobalScope(document); | ||
| while (currentNode) { | ||
| this.collectScopesFromNode(currentNode, scopes, document); | ||
| currentNode = currentNode.$container; | ||
| } | ||
| } | ||
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| for (let i = scopes.length - 1; i >= 0; i--) { | ||
| parent = new MapScope(scopes[i], parent); | ||
| } | ||
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| return parent; | ||
| } | ||
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| private getVisibleUris(uri: URI): Set<string> | undefined { | ||
| return this.visibleUris.get(uri, () => ProjectUtils.findVisibleUris(this.documents, uri)); | ||
| } | ||
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| /** | ||
| * Create a global scope filtered for the given referenceType and on visibles projects URIs | ||
| */ | ||
| protected getGlobalScope(document: LangiumDocument): Scope { | ||
| return this.globalScopeCache.get(document.uri, () => new GlobalScope(this.indexManager.allElements(undefined, this.getVisibleUris(document.uri)))); | ||
| } | ||
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| protected getPrecomputedScope(node: AstNode, document: LangiumDocument): Map<string, AstNodeDescription> { | ||
| return this.precomputedCache.get(document.uri, node, () => { | ||
| const precomputed = new Map<string, AstNodeDescription>(); | ||
| if (document.precomputedScopes) { | ||
| for (const element of document.precomputedScopes.get(node)) { | ||
| precomputed.set(element.name, element); | ||
| } | ||
| } | ||
| return precomputed; | ||
| }); | ||
| } | ||
| } | ||
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| export class GlobalScope implements Scope { | ||
| readonly elements: Map<string, AstNodeDescription>; | ||
| constructor(elements: Stream<AstNodeDescription>) { | ||
| this.elements = new Map(); | ||
| for (const element of elements) { | ||
| this.elements.set(element.name, element); | ||
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| // Import elements from Smp and Attributes namespaces in global namespace | ||
| if (element.name.startsWith('Smp.')) { | ||
| const name = element.name.substring(4); | ||
| this.elements.set(name, { ...element, name }); | ||
| } | ||
| else if (element.name.startsWith('Attributes.')) { | ||
| const name = element.name.substring(11); | ||
| this.elements.set(name, { ...element, name }); | ||
| } | ||
| } | ||
| } | ||
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| getElement(name: string): AstNodeDescription | undefined { | ||
| return this.elements.get(name); | ||
| } | ||
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| getAllElements(): Stream<AstNodeDescription> { | ||
| return stream(this.elements.values()); | ||
| } | ||
| } | ||
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| export class MapScope implements Scope { | ||
| readonly elements: Map<string, AstNodeDescription>; | ||
| readonly outerScope: Scope; | ||
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| constructor(elements: Map<string, AstNodeDescription>, outerScope: Scope) { | ||
| this.elements = elements; | ||
| this.outerScope = outerScope; | ||
| } | ||
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| getElement(name: string): AstNodeDescription | undefined { | ||
| return this.elements.get(name) ?? this.outerScope.getElement(name); | ||
| } | ||
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| getAllElements(): Stream<AstNodeDescription> { | ||
| return stream(this.elements.values()).concat(this.outerScope.getAllElements()); | ||
| } | ||
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| } |
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