@angular/language-service/ivy/definitions.js

/**
 * @license
 * Copyright Google LLC All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */
(function (factory) {
    if (typeof module === "object" && typeof module.exports === "object") {
        var v = factory(require, exports);
        if (v !== undefined) module.exports = v;
    }
    else if (typeof define === "function" && define.amd) {
        define("@angular/language-service/ivy/definitions", ["require", "exports", "tslib", "@angular/compiler", "@angular/compiler-cli/src/ngtsc/typecheck/api", "typescript", "@angular/language-service/ivy/hybrid_visitor", "@angular/language-service/ivy/utils"], factory);
    }
})(function (require, exports) {
    "use strict";
    Object.defineProperty(exports, "__esModule", { value: true });
    exports.DefinitionBuilder = void 0;
    var tslib_1 = require("tslib");
    var compiler_1 = require("@angular/compiler");
    var api_1 = require("@angular/compiler-cli/src/ngtsc/typecheck/api");
    var ts = require("typescript");
    var hybrid_visitor_1 = require("@angular/language-service/ivy/hybrid_visitor");
    var utils_1 = require("@angular/language-service/ivy/utils");
    var DefinitionBuilder = /** @class */ (function () {
        function DefinitionBuilder(tsLS, compiler) {
            this.tsLS = tsLS;
            this.compiler = compiler;
        }
        DefinitionBuilder.prototype.getDefinitionAndBoundSpan = function (fileName, position) {
            var templateInfo = utils_1.getTemplateInfoAtPosition(fileName, position, this.compiler);
            if (templateInfo === undefined) {
                return;
            }
            var definitionMeta = this.getDefinitionMetaAtPosition(templateInfo, position);
            // The `$event` of event handlers would point to the $event parameter in the shim file, as in
            // `_outputHelper(_t3["x"]).subscribe(function ($event): any { $event }) ;`
            // If we wanted to return something for this, it would be more appropriate for something like
            // `getTypeDefinition`.
            if (definitionMeta === undefined || utils_1.isDollarEvent(definitionMeta.node)) {
                return undefined;
            }
            var definitions = this.getDefinitionsForSymbol(tslib_1.__assign(tslib_1.__assign({}, definitionMeta), templateInfo));
            return { definitions: definitions, textSpan: utils_1.getTextSpanOfNode(definitionMeta.node) };
        };
        DefinitionBuilder.prototype.getDefinitionsForSymbol = function (_a) {
            var symbol = _a.symbol, node = _a.node, path = _a.path, component = _a.component;
            switch (symbol.kind) {
                case api_1.SymbolKind.Directive:
                case api_1.SymbolKind.Element:
                case api_1.SymbolKind.Template:
                case api_1.SymbolKind.DomBinding:
                    // Though it is generally more appropriate for the above symbol definitions to be
                    // associated with "type definitions" since the location in the template is the
                    // actual definition location, the better user experience would be to allow
                    // LS users to "go to definition" on an item in the template that maps to a class and be
                    // taken to the directive or HTML class.
                    return this.getTypeDefinitionsForTemplateInstance(symbol, node);
                case api_1.SymbolKind.Output:
                case api_1.SymbolKind.Input: {
                    var bindingDefs = this.getDefinitionsForSymbols.apply(this, tslib_1.__spread(symbol.bindings));
                    // Also attempt to get directive matches for the input name. If there is a directive that
                    // has the input name as part of the selector, we want to return that as well.
                    var directiveDefs = this.getDirectiveTypeDefsForBindingNode(node, path, component);
                    return tslib_1.__spread(bindingDefs, directiveDefs);
                }
                case api_1.SymbolKind.Variable:
                case api_1.SymbolKind.Reference: {
                    var definitions = [];
                    if (symbol.declaration !== node) {
                        definitions.push({
                            name: symbol.declaration.name,
                            containerName: '',
                            containerKind: ts.ScriptElementKind.unknown,
                            kind: ts.ScriptElementKind.variableElement,
                            textSpan: utils_1.getTextSpanOfNode(symbol.declaration),
                            contextSpan: utils_1.toTextSpan(symbol.declaration.sourceSpan),
                            fileName: symbol.declaration.sourceSpan.start.file.url,
                        });
                    }
                    if (symbol.kind === api_1.SymbolKind.Variable) {
                        definitions.push.apply(definitions, tslib_1.__spread(this.getDefinitionsForSymbols(symbol)));
                    }
                    return definitions;
                }
                case api_1.SymbolKind.Expression: {
                    return this.getDefinitionsForSymbols(symbol);
                }
            }
        };
        DefinitionBuilder.prototype.getDefinitionsForSymbols = function () {
            var _this = this;
            var symbols = [];
            for (var _i = 0; _i < arguments.length; _i++) {
                symbols[_i] = arguments[_i];
            }
            return utils_1.flatMap(symbols, function (_a) {
                var _b;
                var shimLocation = _a.shimLocation;
                var shimPath = shimLocation.shimPath, positionInShimFile = shimLocation.positionInShimFile;
                return (_b = _this.tsLS.getDefinitionAtPosition(shimPath, positionInShimFile)) !== null && _b !== void 0 ? _b : [];
            });
        };
        DefinitionBuilder.prototype.getTypeDefinitionsAtPosition = function (fileName, position) {
            var templateInfo = utils_1.getTemplateInfoAtPosition(fileName, position, this.compiler);
            if (templateInfo === undefined) {
                return;
            }
            var definitionMeta = this.getDefinitionMetaAtPosition(templateInfo, position);
            if (definitionMeta === undefined) {
                return undefined;
            }
            var symbol = definitionMeta.symbol, node = definitionMeta.node;
            switch (symbol.kind) {
                case api_1.SymbolKind.Directive:
                case api_1.SymbolKind.DomBinding:
                case api_1.SymbolKind.Element:
                case api_1.SymbolKind.Template:
                    return this.getTypeDefinitionsForTemplateInstance(symbol, node);
                case api_1.SymbolKind.Output:
                case api_1.SymbolKind.Input: {
                    var bindingDefs = this.getTypeDefinitionsForSymbols.apply(this, tslib_1.__spread(symbol.bindings));
                    // Also attempt to get directive matches for the input name. If there is a directive that
                    // has the input name as part of the selector, we want to return that as well.
                    var directiveDefs = this.getDirectiveTypeDefsForBindingNode(node, definitionMeta.path, templateInfo.component);
                    return tslib_1.__spread(bindingDefs, directiveDefs);
                }
                case api_1.SymbolKind.Reference:
                case api_1.SymbolKind.Expression:
                case api_1.SymbolKind.Variable:
                    return this.getTypeDefinitionsForSymbols(symbol);
            }
        };
        DefinitionBuilder.prototype.getTypeDefinitionsForTemplateInstance = function (symbol, node) {
            switch (symbol.kind) {
                case api_1.SymbolKind.Template: {
                    var matches = utils_1.getDirectiveMatchesForElementTag(symbol.templateNode, symbol.directives);
                    return this.getTypeDefinitionsForSymbols.apply(this, tslib_1.__spread(matches));
                }
                case api_1.SymbolKind.Element: {
                    var matches = utils_1.getDirectiveMatchesForElementTag(symbol.templateNode, symbol.directives);
                    // If one of the directive matches is a component, we should not include the native element
                    // in the results because it is replaced by the component.
                    return Array.from(matches).some(function (dir) { return dir.isComponent; }) ? this.getTypeDefinitionsForSymbols.apply(this, tslib_1.__spread(matches)) : this.getTypeDefinitionsForSymbols.apply(this, tslib_1.__spread(matches, [symbol]));
                }
                case api_1.SymbolKind.DomBinding: {
                    if (!(node instanceof compiler_1.TmplAstTextAttribute)) {
                        return [];
                    }
                    var dirs = utils_1.getDirectiveMatchesForAttribute(node.name, symbol.host.templateNode, symbol.host.directives);
                    return this.getTypeDefinitionsForSymbols.apply(this, tslib_1.__spread(dirs));
                }
                case api_1.SymbolKind.Directive:
                    return this.getTypeDefinitionsForSymbols(symbol);
            }
        };
        DefinitionBuilder.prototype.getDirectiveTypeDefsForBindingNode = function (node, pathToNode, component) {
            if (!(node instanceof compiler_1.TmplAstBoundAttribute) && !(node instanceof compiler_1.TmplAstTextAttribute) &&
                !(node instanceof compiler_1.TmplAstBoundEvent)) {
                return [];
            }
            var parent = pathToNode[pathToNode.length - 2];
            if (!(parent instanceof compiler_1.TmplAstTemplate || parent instanceof compiler_1.TmplAstElement)) {
                return [];
            }
            var templateOrElementSymbol = this.compiler.getTemplateTypeChecker().getSymbolOfNode(parent, component);
            if (templateOrElementSymbol === null ||
                (templateOrElementSymbol.kind !== api_1.SymbolKind.Template &&
                    templateOrElementSymbol.kind !== api_1.SymbolKind.Element)) {
                return [];
            }
            var dirs = utils_1.getDirectiveMatchesForAttribute(node.name, parent, templateOrElementSymbol.directives);
            return this.getTypeDefinitionsForSymbols.apply(this, tslib_1.__spread(dirs));
        };
        DefinitionBuilder.prototype.getTypeDefinitionsForSymbols = function () {
            var _this = this;
            var symbols = [];
            for (var _i = 0; _i < arguments.length; _i++) {
                symbols[_i] = arguments[_i];
            }
            return utils_1.flatMap(symbols, function (_a) {
                var _b;
                var shimLocation = _a.shimLocation;
                var shimPath = shimLocation.shimPath, positionInShimFile = shimLocation.positionInShimFile;
                return (_b = _this.tsLS.getTypeDefinitionAtPosition(shimPath, positionInShimFile)) !== null && _b !== void 0 ? _b : [];
            });
        };
        DefinitionBuilder.prototype.getDefinitionMetaAtPosition = function (_a, position) {
            var template = _a.template, component = _a.component;
            var path = hybrid_visitor_1.getPathToNodeAtPosition(template, position);
            if (path === undefined) {
                return;
            }
            var node = path[path.length - 1];
            var symbol = this.compiler.getTemplateTypeChecker().getSymbolOfNode(node, component);
            if (symbol === null) {
                return;
            }
            return { node: node, path: path, symbol: symbol };
        };
        return DefinitionBuilder;
    }());
    exports.DefinitionBuilder = DefinitionBuilder;
});
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* @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nimport {AST, TmplAstBoundAttribute, TmplAstBoundEvent, TmplAstElement, TmplAstNode, TmplAstTemplate, TmplAstTextAttribute} from '@angular/compiler';\nimport {NgCompiler} from '@angular/compiler-cli/src/ngtsc/core';\nimport {DirectiveSymbol, DomBindingSymbol, ElementSymbol, ShimLocation, Symbol, SymbolKind, TemplateSymbol} from '@angular/compiler-cli/src/ngtsc/typecheck/api';\nimport * as ts from 'typescript';\n\nimport {getPathToNodeAtPosition} from './hybrid_visitor';\nimport {flatMap, getDirectiveMatchesForAttribute, getDirectiveMatchesForElementTag, getTemplateInfoAtPosition, getTextSpanOfNode, isDollarEvent, TemplateInfo, toTextSpan} from './utils';\n\ninterface DefinitionMeta {\n  node: AST|TmplAstNode;\n  path: Array<AST|TmplAstNode>;\n  symbol: Symbol;\n}\n\ninterface HasShimLocation {\n  shimLocation: ShimLocation;\n}\n\nexport class DefinitionBuilder {\n  constructor(private readonly tsLS: ts.LanguageService, private readonly compiler: NgCompiler) {}\n\n  getDefinitionAndBoundSpan(fileName: string, position: number): ts.DefinitionInfoAndBoundSpan\n      |undefined {\n    const templateInfo = getTemplateInfoAtPosition(fileName, position, this.compiler);\n    if (templateInfo === undefined) {\n      return;\n    }\n    const definitionMeta = this.getDefinitionMetaAtPosition(templateInfo, position);\n    // The `$event` of event handlers would point to the $event parameter in the shim file, as in\n    // `_outputHelper(_t3[\"x\"]).subscribe(function ($event): any { $event }) ;`\n    // If we wanted to return something for this, it would be more appropriate for something like\n    // `getTypeDefinition`.\n    if (definitionMeta === undefined || isDollarEvent(definitionMeta.node)) {\n      return undefined;\n    }\n\n    const definitions = this.getDefinitionsForSymbol({...definitionMeta, ...templateInfo});\n    return {definitions, textSpan: getTextSpanOfNode(definitionMeta.node)};\n  }\n\n  private getDefinitionsForSymbol({symbol, node, path, component}: DefinitionMeta&\n                                  TemplateInfo): readonly ts.DefinitionInfo[]|undefined {\n    switch (symbol.kind) {\n      case SymbolKind.Directive:\n      case SymbolKind.Element:\n      case SymbolKind.Template:\n      case SymbolKind.DomBinding:\n        // Though it is generally more appropriate for the above symbol definitions to be\n        // associated with \"type definitions\" since the location in the template is the\n        // actual definition location, the better user experience would be to allow\n        // LS users to \"go to definition\" on an item in the template that maps to a class and be\n        // taken to the directive or HTML class.\n        return this.getTypeDefinitionsForTemplateInstance(symbol, node);\n      case SymbolKind.Output:\n      case SymbolKind.Input: {\n        const bindingDefs = this.getDefinitionsForSymbols(...symbol.bindings);\n        // Also attempt to get directive matches for the input name. If there is a directive that\n        // has the input name as part of the selector, we want to return that as well.\n        const directiveDefs = this.getDirectiveTypeDefsForBindingNode(node, path, component);\n        return [...bindingDefs, ...directiveDefs];\n      }\n      case SymbolKind.Variable:\n      case SymbolKind.Reference: {\n        const definitions: ts.DefinitionInfo[] = [];\n        if (symbol.declaration !== node) {\n          definitions.push({\n            name: symbol.declaration.name,\n            containerName: '',\n            containerKind: ts.ScriptElementKind.unknown,\n            kind: ts.ScriptElementKind.variableElement,\n            textSpan: getTextSpanOfNode(symbol.declaration),\n            contextSpan: toTextSpan(symbol.declaration.sourceSpan),\n            fileName: symbol.declaration.sourceSpan.start.file.url,\n          });\n        }\n        if (symbol.kind === SymbolKind.Variable) {\n          definitions.push(...this.getDefinitionsForSymbols(symbol));\n        }\n        return definitions;\n      }\n      case SymbolKind.Expression: {\n        return this.getDefinitionsForSymbols(symbol);\n      }\n    }\n  }\n\n  private getDefinitionsForSymbols(...symbols: HasShimLocation[]): ts.DefinitionInfo[] {\n    return flatMap(symbols, ({shimLocation}) => {\n      const {shimPath, positionInShimFile} = shimLocation;\n      return this.tsLS.getDefinitionAtPosition(shimPath, positionInShimFile) ?? [];\n    });\n  }\n\n  getTypeDefinitionsAtPosition(fileName: string, position: number):\n      readonly ts.DefinitionInfo[]|undefined {\n    const templateInfo = getTemplateInfoAtPosition(fileName, position, this.compiler);\n    if (templateInfo === undefined) {\n      return;\n    }\n    const definitionMeta = this.getDefinitionMetaAtPosition(templateInfo, position);\n    if (definitionMeta === undefined) {\n      return undefined;\n    }\n\n    const {symbol, node} = definitionMeta;\n    switch (symbol.kind) {\n      case SymbolKind.Directive:\n      case SymbolKind.DomBinding:\n      case SymbolKind.Element:\n      case SymbolKind.Template:\n        return this.getTypeDefinitionsForTemplateInstance(symbol, node);\n      case SymbolKind.Output:\n      case SymbolKind.Input: {\n        const bindingDefs = this.getTypeDefinitionsForSymbols(...symbol.bindings);\n        // Also attempt to get directive matches for the input name. If there is a directive that\n        // has the input name as part of the selector, we want to return that as well.\n        const directiveDefs = this.getDirectiveTypeDefsForBindingNode(\n            node, definitionMeta.path, templateInfo.component);\n        return [...bindingDefs, ...directiveDefs];\n      }\n      case SymbolKind.Reference:\n      case SymbolKind.Expression:\n      case SymbolKind.Variable:\n        return this.getTypeDefinitionsForSymbols(symbol);\n    }\n  }\n\n  private getTypeDefinitionsForTemplateInstance(\n      symbol: TemplateSymbol|ElementSymbol|DomBindingSymbol|DirectiveSymbol,\n      node: AST|TmplAstNode): ts.DefinitionInfo[] {\n    switch (symbol.kind) {\n      case SymbolKind.Template: {\n        const matches = getDirectiveMatchesForElementTag(symbol.templateNode, symbol.directives);\n        return this.getTypeDefinitionsForSymbols(...matches);\n      }\n      case SymbolKind.Element: {\n        const matches = getDirectiveMatchesForElementTag(symbol.templateNode, symbol.directives);\n        // If one of the directive matches is a component, we should not include the native element\n        // in the results because it is replaced by the component.\n        return Array.from(matches).some(dir => dir.isComponent) ?\n            this.getTypeDefinitionsForSymbols(...matches) :\n            this.getTypeDefinitionsForSymbols(...matches, symbol);\n      }\n      case SymbolKind.DomBinding: {\n        if (!(node instanceof TmplAstTextAttribute)) {\n          return [];\n        }\n        const dirs = getDirectiveMatchesForAttribute(\n            node.name, symbol.host.templateNode, symbol.host.directives);\n        return this.getTypeDefinitionsForSymbols(...dirs);\n      }\n      case SymbolKind.Directive:\n        return this.getTypeDefinitionsForSymbols(symbol);\n    }\n  }\n\n  private getDirectiveTypeDefsForBindingNode(\n      node: TmplAstNode|AST, pathToNode: Array<TmplAstNode|AST>, component: ts.ClassDeclaration) {\n    if (!(node instanceof TmplAstBoundAttribute) && !(node instanceof TmplAstTextAttribute) &&\n        !(node instanceof TmplAstBoundEvent)) {\n      return [];\n    }\n    const parent = pathToNode[pathToNode.length - 2];\n    if (!(parent instanceof TmplAstTemplate || parent instanceof TmplAstElement)) {\n      return [];\n    }\n    const templateOrElementSymbol =\n        this.compiler.getTemplateTypeChecker().getSymbolOfNode(parent, component);\n    if (templateOrElementSymbol === null ||\n        (templateOrElementSymbol.kind !== SymbolKind.Template &&\n         templateOrElementSymbol.kind !== SymbolKind.Element)) {\n      return [];\n    }\n    const dirs =\n        getDirectiveMatchesForAttribute(node.name, parent, templateOrElementSymbol.directives);\n    return this.getTypeDefinitionsForSymbols(...dirs);\n  }\n\n  private getTypeDefinitionsForSymbols(...symbols: HasShimLocation[]): ts.DefinitionInfo[] {\n    return flatMap(symbols, ({shimLocation}) => {\n      const {shimPath, positionInShimFile} = shimLocation;\n      return this.tsLS.getTypeDefinitionAtPosition(shimPath, positionInShimFile) ?? [];\n    });\n  }\n\n  private getDefinitionMetaAtPosition({template, component}: TemplateInfo, position: number):\n      DefinitionMeta|undefined {\n    const path = getPathToNodeAtPosition(template, position);\n    if (path === undefined) {\n      return;\n    }\n\n    const node = path[path.length - 1];\n    const symbol = this.compiler.getTemplateTypeChecker().getSymbolOfNode(node, component);\n    if (symbol === null) {\n      return;\n    }\n    return {node, path, symbol};\n  }\n}\n"]}