@angular/language-service
Version:
Angular - language services
232 lines • 28.1 kB
JavaScript
/**
* @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/src/diagnostics", ["require", "exports", "tslib", "path", "typescript", "@angular/language-service/src/diagnostic_messages", "@angular/language-service/src/expression_diagnostics", "@angular/language-service/src/ts_utils", "@angular/language-service/src/utils"], factory);
}
})(function (require, exports) {
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.ngDiagnosticToTsDiagnostic = exports.getDeclarationDiagnostics = exports.getTemplateDiagnostics = void 0;
var tslib_1 = require("tslib");
var path = require("path");
var ts = require("typescript");
var diagnostic_messages_1 = require("@angular/language-service/src/diagnostic_messages");
var expression_diagnostics_1 = require("@angular/language-service/src/expression_diagnostics");
var ts_utils_1 = require("@angular/language-service/src/ts_utils");
var utils_1 = require("@angular/language-service/src/utils");
/**
* Return diagnostic information for the parsed AST of the template.
* @param ast contains HTML and template AST
*/
function getTemplateDiagnostics(ast) {
var parseErrors = ast.parseErrors, templateAst = ast.templateAst, htmlAst = ast.htmlAst, template = ast.template;
if (parseErrors && parseErrors.length) {
return parseErrors.map(function (e) {
return {
kind: ts.DiagnosticCategory.Error,
span: utils_1.offsetSpan(utils_1.spanOf(e.span), template.span.start),
message: e.msg,
};
});
}
return expression_diagnostics_1.getTemplateExpressionDiagnostics({
templateAst: templateAst,
htmlAst: htmlAst,
offset: template.span.start,
query: template.query,
members: template.members,
source: ast.template.source,
});
}
exports.getTemplateDiagnostics = getTemplateDiagnostics;
/**
* Performs a variety diagnostics on directive declarations.
*
* @param declarations Angular directive declarations
* @param modules NgModules in the project
* @param host TypeScript service host used to perform TypeScript queries
* @return diagnosed errors, if any
*/
function getDeclarationDiagnostics(declarations, modules, host) {
var e_1, _a, e_2, _b, e_3, _c, e_4, _d;
var directives = new Set();
try {
for (var _e = tslib_1.__values(modules.ngModules), _f = _e.next(); !_f.done; _f = _e.next()) {
var ngModule = _f.value;
try {
for (var _g = (e_2 = void 0, tslib_1.__values(ngModule.declaredDirectives)), _h = _g.next(); !_h.done; _h = _g.next()) {
var directive = _h.value;
directives.add(directive.reference);
}
}
catch (e_2_1) { e_2 = { error: e_2_1 }; }
finally {
try {
if (_h && !_h.done && (_b = _g.return)) _b.call(_g);
}
finally { if (e_2) throw e_2.error; }
}
}
}
catch (e_1_1) { e_1 = { error: e_1_1 }; }
finally {
try {
if (_f && !_f.done && (_a = _e.return)) _a.call(_e);
}
finally { if (e_1) throw e_1.error; }
}
var results = [];
try {
for (var declarations_1 = tslib_1.__values(declarations), declarations_1_1 = declarations_1.next(); !declarations_1_1.done; declarations_1_1 = declarations_1.next()) {
var declaration = declarations_1_1.value;
var errors = declaration.errors, metadata = declaration.metadata, type = declaration.type, declarationSpan = declaration.declarationSpan;
var sf = host.getSourceFile(type.filePath);
if (!sf) {
host.error("directive " + type.name + " exists but has no source file");
return [];
}
// TypeScript identifier of the directive declaration annotation (e.g. "Component" or
// "Directive") on a directive class.
var directiveIdentifier = ts_utils_1.findTightestNode(sf, declarationSpan.start);
if (!directiveIdentifier) {
host.error("directive " + type.name + " exists but has no identifier");
return [];
}
try {
for (var errors_1 = (e_4 = void 0, tslib_1.__values(errors)), errors_1_1 = errors_1.next(); !errors_1_1.done; errors_1_1 = errors_1.next()) {
var error = errors_1_1.value;
results.push({
kind: ts.DiagnosticCategory.Error,
message: error.message,
span: error.span,
});
}
}
catch (e_4_1) { e_4 = { error: e_4_1 }; }
finally {
try {
if (errors_1_1 && !errors_1_1.done && (_d = errors_1.return)) _d.call(errors_1);
}
finally { if (e_4) throw e_4.error; }
}
if (!modules.ngModuleByPipeOrDirective.has(declaration.type)) {
results.push(diagnostic_messages_1.createDiagnostic(declarationSpan, diagnostic_messages_1.Diagnostic.directive_not_in_module, metadata.isComponent ? 'Component' : 'Directive', type.name));
}
if (metadata.isComponent) {
var _j = metadata.template, template = _j.template, templateUrl = _j.templateUrl, styleUrls = _j.styleUrls;
if (template === null && !templateUrl) {
results.push(diagnostic_messages_1.createDiagnostic(declarationSpan, diagnostic_messages_1.Diagnostic.missing_template_and_templateurl, type.name));
}
else if (templateUrl) {
if (template) {
results.push(diagnostic_messages_1.createDiagnostic(declarationSpan, diagnostic_messages_1.Diagnostic.both_template_and_templateurl, type.name));
}
// Find templateUrl value from the directive call expression, which is the parent of the
// directive identifier.
//
// TODO: We should create an enum of the various properties a directive can have to use
// instead of string literals. We can then perform a mass migration of all literal usages.
var templateUrlNode = ts_utils_1.findPropertyValueOfType(directiveIdentifier.parent, 'templateUrl', ts.isLiteralExpression);
if (!templateUrlNode) {
host.error("templateUrl " + templateUrl + " exists but its TypeScript node doesn't");
return [];
}
results.push.apply(results, tslib_1.__spread(validateUrls([templateUrlNode], host.tsLsHost)));
}
if (styleUrls.length > 0) {
// Find styleUrls value from the directive call expression, which is the parent of the
// directive identifier.
var styleUrlsNode = ts_utils_1.findPropertyValueOfType(directiveIdentifier.parent, 'styleUrls', ts.isArrayLiteralExpression);
if (!styleUrlsNode) {
host.error("styleUrls property exists but its TypeScript node doesn't'");
return [];
}
results.push.apply(results, tslib_1.__spread(validateUrls(styleUrlsNode.elements, host.tsLsHost)));
}
}
}
}
catch (e_3_1) { e_3 = { error: e_3_1 }; }
finally {
try {
if (declarations_1_1 && !declarations_1_1.done && (_c = declarations_1.return)) _c.call(declarations_1);
}
finally { if (e_3) throw e_3.error; }
}
return results;
}
exports.getDeclarationDiagnostics = getDeclarationDiagnostics;
/**
* Checks that URLs on a directive point to a valid file.
* Note that this diagnostic check may require a filesystem hit, and thus may be slower than other
* checks.
*
* @param urls urls to check for validity
* @param tsLsHost TS LS host used for querying filesystem information
* @return diagnosed url errors, if any
*/
function validateUrls(urls, tsLsHost) {
if (!tsLsHost.fileExists) {
return [];
}
var allErrors = [];
// TODO(ayazhafiz): most of this logic can be unified with the logic in
// definitions.ts#getUrlFromProperty. Create a utility function to be used by both.
for (var i = 0; i < urls.length; ++i) {
var urlNode = urls[i];
if (!ts.isStringLiteralLike(urlNode)) {
// If a non-string value is assigned to a URL node (like `templateUrl`), a type error will be
// picked up by the TS Language Server.
continue;
}
var curPath = urlNode.getSourceFile().fileName;
var url = path.join(path.dirname(curPath), urlNode.text);
if (tsLsHost.fileExists(url))
continue;
// Exclude opening and closing quotes in the url span.
var urlSpan = { start: urlNode.getStart() + 1, end: urlNode.end - 1 };
allErrors.push(diagnostic_messages_1.createDiagnostic(urlSpan, diagnostic_messages_1.Diagnostic.invalid_templateurl));
}
return allErrors;
}
/**
* Return a recursive data structure that chains diagnostic messages.
* @param chain
*/
function chainDiagnostics(chain) {
return {
messageText: chain.message,
category: ts.DiagnosticCategory.Error,
code: 0,
next: chain.next ? chain.next.map(chainDiagnostics) : undefined
};
}
/**
* Convert ng.Diagnostic to ts.Diagnostic.
* @param d diagnostic
* @param file
*/
function ngDiagnosticToTsDiagnostic(d, file) {
return {
file: file,
start: d.span.start,
length: d.span.end - d.span.start,
messageText: typeof d.message === 'string' ? d.message : chainDiagnostics(d.message),
category: d.kind,
code: 0,
source: 'ng',
};
}
exports.ngDiagnosticToTsDiagnostic = ngDiagnosticToTsDiagnostic;
});
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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 {NgAnalyzedModules} from '@angular/compiler';\nimport * as path from 'path';\nimport * as ts from 'typescript';\n\nimport {createDiagnostic, Diagnostic} from './diagnostic_messages';\nimport {getTemplateExpressionDiagnostics} from './expression_diagnostics';\nimport {findPropertyValueOfType, findTightestNode} from './ts_utils';\nimport * as ng from './types';\nimport {TypeScriptServiceHost} from './typescript_host';\nimport {offsetSpan, spanOf} from './utils';\n\n/**\n * Return diagnostic information for the parsed AST of the template.\n * @param ast contains HTML and template AST\n */\nexport function getTemplateDiagnostics(ast: ng.AstResult): ng.Diagnostic[] {\n  const {parseErrors, templateAst, htmlAst, template} = ast;\n  if (parseErrors && parseErrors.length) {\n    return parseErrors.map(e => {\n      return {\n        kind: ts.DiagnosticCategory.Error,\n        span: offsetSpan(spanOf(e.span), template.span.start),\n        message: e.msg,\n      };\n    });\n  }\n  return getTemplateExpressionDiagnostics({\n    templateAst: templateAst,\n    htmlAst: htmlAst,\n    offset: template.span.start,\n    query: template.query,\n    members: template.members,\n    source: ast.template.source,\n  });\n}\n\n/**\n * Performs a variety diagnostics on directive declarations.\n *\n * @param declarations Angular directive declarations\n * @param modules NgModules in the project\n * @param host TypeScript service host used to perform TypeScript queries\n * @return diagnosed errors, if any\n */\nexport function getDeclarationDiagnostics(\n    declarations: ng.Declaration[], modules: NgAnalyzedModules,\n    host: Readonly<TypeScriptServiceHost>): ng.Diagnostic[] {\n  const directives = new Set<ng.StaticSymbol>();\n  for (const ngModule of modules.ngModules) {\n    for (const directive of ngModule.declaredDirectives) {\n      directives.add(directive.reference);\n    }\n  }\n\n  const results: ng.Diagnostic[] = [];\n\n  for (const declaration of declarations) {\n    const {errors, metadata, type, declarationSpan} = declaration;\n\n    const sf = host.getSourceFile(type.filePath);\n    if (!sf) {\n      host.error(`directive ${type.name} exists but has no source file`);\n      return [];\n    }\n    // TypeScript identifier of the directive declaration annotation (e.g. \"Component\" or\n    // \"Directive\") on a directive class.\n    const directiveIdentifier = findTightestNode(sf, declarationSpan.start);\n    if (!directiveIdentifier) {\n      host.error(`directive ${type.name} exists but has no identifier`);\n      return [];\n    }\n\n    for (const error of errors) {\n      results.push({\n        kind: ts.DiagnosticCategory.Error,\n        message: error.message,\n        span: error.span,\n      });\n    }\n\n    if (!modules.ngModuleByPipeOrDirective.has(declaration.type)) {\n      results.push(createDiagnostic(\n          declarationSpan, Diagnostic.directive_not_in_module,\n          metadata.isComponent ? 'Component' : 'Directive', type.name));\n    }\n\n    if (metadata.isComponent) {\n      const {template, templateUrl, styleUrls} = metadata.template !;\n      if (template === null && !templateUrl) {\n        results.push(createDiagnostic(\n            declarationSpan, Diagnostic.missing_template_and_templateurl, type.name));\n      } else if (templateUrl) {\n        if (template) {\n          results.push(createDiagnostic(\n              declarationSpan, Diagnostic.both_template_and_templateurl, type.name));\n        }\n\n        // Find templateUrl value from the directive call expression, which is the parent of the\n        // directive identifier.\n        //\n        // TODO: We should create an enum of the various properties a directive can have to use\n        // instead of string literals. We can then perform a mass migration of all literal usages.\n        const templateUrlNode = findPropertyValueOfType(\n            directiveIdentifier.parent, 'templateUrl', ts.isLiteralExpression);\n        if (!templateUrlNode) {\n          host.error(`templateUrl ${templateUrl} exists but its TypeScript node doesn't`);\n          return [];\n        }\n\n        results.push(...validateUrls([templateUrlNode], host.tsLsHost));\n      }\n\n      if (styleUrls.length > 0) {\n        // Find styleUrls value from the directive call expression, which is the parent of the\n        // directive identifier.\n        const styleUrlsNode = findPropertyValueOfType(\n            directiveIdentifier.parent, 'styleUrls', ts.isArrayLiteralExpression);\n        if (!styleUrlsNode) {\n          host.error(`styleUrls property exists but its TypeScript node doesn't'`);\n          return [];\n        }\n\n        results.push(...validateUrls(styleUrlsNode.elements, host.tsLsHost));\n      }\n    }\n  }\n\n  return results;\n}\n\n/**\n * Checks that URLs on a directive point to a valid file.\n * Note that this diagnostic check may require a filesystem hit, and thus may be slower than other\n * checks.\n *\n * @param urls urls to check for validity\n * @param tsLsHost TS LS host used for querying filesystem information\n * @return diagnosed url errors, if any\n */\nfunction validateUrls(\n    urls: ArrayLike<ts.Expression>, tsLsHost: Readonly<ts.LanguageServiceHost>): ng.Diagnostic[] {\n  if (!tsLsHost.fileExists) {\n    return [];\n  }\n\n  const allErrors: ng.Diagnostic[] = [];\n  // TODO(ayazhafiz): most of this logic can be unified with the logic in\n  // definitions.ts#getUrlFromProperty. Create a utility function to be used by both.\n  for (let i = 0; i < urls.length; ++i) {\n    const urlNode = urls[i];\n    if (!ts.isStringLiteralLike(urlNode)) {\n      // If a non-string value is assigned to a URL node (like `templateUrl`), a type error will be\n      // picked up by the TS Language Server.\n      continue;\n    }\n    const curPath = urlNode.getSourceFile().fileName;\n    const url = path.join(path.dirname(curPath), urlNode.text);\n    if (tsLsHost.fileExists(url)) continue;\n\n    // Exclude opening and closing quotes in the url span.\n    const urlSpan = {start: urlNode.getStart() + 1, end: urlNode.end - 1};\n    allErrors.push(createDiagnostic(urlSpan, Diagnostic.invalid_templateurl));\n  }\n  return allErrors;\n}\n\n/**\n * Return a recursive data structure that chains diagnostic messages.\n * @param chain\n */\nfunction chainDiagnostics(chain: ng.DiagnosticMessageChain): ts.DiagnosticMessageChain {\n  return {\n    messageText: chain.message,\n    category: ts.DiagnosticCategory.Error,\n    code: 0,\n    next: chain.next ? chain.next.map(chainDiagnostics) : undefined\n  };\n}\n\n/**\n * Convert ng.Diagnostic to ts.Diagnostic.\n * @param d diagnostic\n * @param file\n */\nexport function ngDiagnosticToTsDiagnostic(\n    d: ng.Diagnostic, file: ts.SourceFile|undefined): ts.Diagnostic {\n  return {\n    file,\n    start: d.span.start,\n    length: d.span.end - d.span.start,\n    messageText: typeof d.message === 'string' ? d.message : chainDiagnostics(d.message),\n    category: d.kind,\n    code: 0,\n    source: 'ng',\n  };\n}\n"]}