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fix(language-service): remove asserts for non-null expressions (#16422) 

Reworked some of the code so asserts are no longer necessary.
Added additional and potentially redundant checks
Added checks where the null checker found real problems.

PR Close #16422
This commit is contained in:
Chuck Jazdzewski 2017-04-28 15:10:30 -07:00 committed by Miško Hevery
parent 270d694ed2
commit 253345c0c0
12 changed files with 241 additions and 195 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
packages/language-service/src/ast_path.ts
View File

@ -13,7 +13,9 @@ export class AstPath<T> {
get head(): T|undefined { return this.path[0]; }
get tail(): T|undefined { return this.path[this.path.length - 1]; }
parentOf(node: T): T|undefined { return this.path[this.path.indexOf(node) - 1]; }
parentOf(node: T|undefined): T|undefined {
return node && this.path[this.path.indexOf(node) - 1];
}
childOf(node: T): T|undefined { return this.path[this.path.indexOf(node) + 1]; }
first<N extends T>(ctor: {new (...args: any[]): N}): N|undefined {

57
packages/language-service/src/completions.ts
View File

@ -33,23 +33,24 @@ export function getTemplateCompletions(templateInfo: TemplateInfo): Completions|
let result: Completions|undefined = undefined;
let {htmlAst, templateAst, template} = templateInfo;
// The templateNode starts at the delimiter character so we add 1 to skip it.
let templatePosition = templateInfo.position ! - template.span.start;
if (templateInfo.position != null) {
let templatePosition = templateInfo.position - template.span.start;
let path = new HtmlAstPath(htmlAst, templatePosition);
let mostSpecific = path.tail;
if (path.empty) {
if (path.empty || !mostSpecific) {
result = elementCompletions(templateInfo, path);
} else {
let astPosition = templatePosition - mostSpecific !.sourceSpan !.start.offset;
mostSpecific !.visit(
let astPosition = templatePosition - mostSpecific.sourceSpan.start.offset;
mostSpecific.visit(
{
visitElement(ast) {
let startTagSpan = spanOf(ast.sourceSpan);
let tagLen = ast.name.length;
if (templatePosition <=
startTagSpan !.start + tagLen + 1 /* 1 for the opening angle bracked */) {
startTagSpan.start + tagLen + 1 /* 1 for the opening angle bracked */) {
// If we are in the tag then return the element completions.
result = elementCompletions(templateInfo, path);
} else if (templatePosition < startTagSpan !.end) {
} else if (templatePosition < startTagSpan.end) {
// We are in the attribute section of the element (but not in an attribute).
// Return the attribute completions.
result = attributeCompletions(templateInfo, path);
@ -65,7 +66,7 @@ export function getTemplateCompletions(templateInfo: TemplateInfo): Completions|
},
visitText(ast) {
// Check if we are in a entity.
result = entityCompletions(getSourceText(template, spanOf(ast) !), astPosition);
result = entityCompletions(getSourceText(template, spanOf(ast)), astPosition);
if (result) return result;
result = interpolationCompletions(templateInfo, templatePosition);
if (result) return result;
@ -93,11 +94,12 @@ export function getTemplateCompletions(templateInfo: TemplateInfo): Completions|
},
null);
}
}
return result;
}
function attributeCompletions(info: TemplateInfo, path: HtmlAstPath): Completions|undefined {
let item = path.tail instanceof Element ? path.tail : path.parentOf(path.tail !);
let item = path.tail instanceof Element ? path.tail : path.parentOf(path.tail);
if (item instanceof Element) {
return attributeCompletionsForElement(info, item.name, item);
}
@ -213,11 +215,12 @@ function elementCompletions(info: TemplateInfo, path: HtmlAstPath): Completions|
let htmlNames = elementNames().filter(name => !(name in hiddenHtmlElements));
// Collect the elements referenced by the selectors
let directiveElements =
getSelectors(info).selectors.map(selector => selector.element).filter(name => !!name);
let directiveElements = getSelectors(info)
.selectors.map(selector => selector.element)
.filter(name => !!name) as string[];
let components =
directiveElements.map<Completion>(name => ({kind: 'component', name: name !, sort: name !}));
directiveElements.map<Completion>(name => ({kind: 'component', name, sort: name}));
let htmlElements = htmlNames.map<Completion>(name => ({kind: 'element', name: name, sort: name}));
// Return components and html elements
@ -262,25 +265,25 @@ function voidElementAttributeCompletions(info: TemplateInfo, path: HtmlAstPath):
undefined {
let tail = path.tail;
if (tail instanceof Text) {
let match = tail.value.match(/<(\w(\w|\d|-)*:)?(\w(\w|\d|-)*)\s/) !;
let match = tail.value.match(/<(\w(\w|\d|-)*:)?(\w(\w|\d|-)*)\s/);
// The position must be after the match, otherwise we are still in a place where elements
// are expected (such as `<|a` or `<a|`; we only want attributes for `<a |` or after).
if (match && path.position >= match.index ! + match[0].length + tail.sourceSpan.start.offset) {
if (match &&
path.position >= (match.index || 0) + match[0].length + tail.sourceSpan.start.offset) {
return attributeCompletionsForElement(info, match[3]);
}
}
}
class ExpressionVisitor extends NullTemplateVisitor {
private getExpressionScope: () => SymbolTable;
result: Completions;
constructor(
private info: TemplateInfo, private position: number, private attr?: Attribute,
private getExpressionScope?: () => SymbolTable) {
getExpressionScope?: () => SymbolTable) {
super();
if (!getExpressionScope) {
this.getExpressionScope = () => info.template.members;
}
this.getExpressionScope = getExpressionScope || (() => info.template.members);
}
visitDirectiveProperty(ast: BoundDirectivePropertyAst): void {
@ -311,7 +314,8 @@ class ExpressionVisitor extends NullTemplateVisitor {
this.info.expressionParser.parseTemplateBindings(key, this.attr.value, null);
// find the template binding that contains the position
const valueRelativePosition = this.position - this.attr.valueSpan !.start.offset - 1;
if (!this.attr.valueSpan) return;
const valueRelativePosition = this.position - this.attr.valueSpan.start.offset - 1;
const bindings = templateBindingResult.templateBindings;
const binding =
bindings.find(
@ -340,11 +344,13 @@ class ExpressionVisitor extends NullTemplateVisitor {
// We are after the '=' in a let clause. The valid values here are the members of the
// template reference's type parameter.
const directiveMetadata = selectorInfo.map.get(selector);
if (directiveMetadata) {
const contextTable =
this.info.template.query.getTemplateContext(directiveMetadata !.type.reference);
this.info.template.query.getTemplateContext(directiveMetadata.type.reference);
if (contextTable) {
this.result = this.symbolsToCompletions(contextTable.values());
}
}
} else if (binding.key && valueRelativePosition <= (binding.key.length - key.length)) {
keyCompletions();
}
@ -371,7 +377,7 @@ class ExpressionVisitor extends NullTemplateVisitor {
const expressionPosition = this.position - ast.sourceSpan.start.offset;
if (inSpan(expressionPosition, ast.value.span)) {
const completions = getExpressionCompletions(
this.getExpressionScope !(), ast.value, expressionPosition, this.info.template.query);
this.getExpressionScope(), ast.value, expressionPosition, this.info.template.query);
if (completions) {
this.result = this.symbolsToCompletions(completions);
}
@ -380,8 +386,8 @@ class ExpressionVisitor extends NullTemplateVisitor {
private attributeValueCompletions(value: AST, position?: number) {
const symbols = getExpressionCompletions(
this.getExpressionScope !(), value,
position == null ? this.attributeValuePosition : position, this.info.template.query);
this.getExpressionScope(), value, position == null ? this.attributeValuePosition : position,
this.info.template.query);
if (symbols) {
this.result = this.symbolsToCompletions(symbols);
}
@ -393,12 +399,13 @@ class ExpressionVisitor extends NullTemplateVisitor {
}
private get attributeValuePosition() {
return this.position - this.attr !.valueSpan !.start.offset - 1;
if (this.attr && this.attr.valueSpan) {
return this.position - this.attr.valueSpan.start.offset - 1;
}
return 0;
}
}
function getSourceText(template: TemplateSource, span: Span): string {
return template.source.substring(span.start, span.end);
}

26
packages/language-service/src/diagnostics.ts
View File

@ -29,7 +29,7 @@ export function getTemplateDiagnostics(
results.push(...ast.parseErrors.map<Diagnostic>(
e => ({
kind: DiagnosticKind.Error,
span: offsetSpan(spanOf(e.span) !, template.span.start),
span: offsetSpan(spanOf(e.span), template.span.start),
message: e.msg
})));
} else if (ast.templateAst) {
@ -91,14 +91,16 @@ export function getDeclarationDiagnostics(
function getTemplateExpressionDiagnostics(
template: TemplateSource, astResult: AstResult): Diagnostics {
if (astResult.htmlAst && astResult.directive && astResult.directives && astResult.pipes &&
astResult.templateAst && astResult.expressionParser) {
const info: TemplateInfo = {
template,
htmlAst: astResult.htmlAst !,
directive: astResult.directive !,
directives: astResult.directives !,
pipes: astResult.pipes !,
templateAst: astResult.templateAst !,
expressionParser: astResult.expressionParser !
htmlAst: astResult.htmlAst,
directive: astResult.directive,
directives: astResult.directives,
pipes: astResult.pipes,
templateAst: astResult.templateAst,
expressionParser: astResult.expressionParser
};
const visitor = new ExpressionDiagnosticsVisitor(
info, (path: TemplateAstPath, includeEvent: boolean) =>
@ -106,6 +108,8 @@ function getTemplateExpressionDiagnostics(
templateVisitAll(visitor, astResult.templateAst !);
return visitor.diagnostics;
}
return [];
}
class ExpressionDiagnosticsVisitor extends TemplateAstChildVisitor {
private path: TemplateAstPath;
@ -158,11 +162,11 @@ class ExpressionDiagnosticsVisitor extends TemplateAstChildVisitor {
if (context && !context.has(ast.value)) {
if (ast.value === '$implicit') {
this.reportError(
'The template context does not have an implicit value', spanOf(ast.sourceSpan) !);
'The template context does not have an implicit value', spanOf(ast.sourceSpan));
} else {
this.reportError(
`The template context does not defined a member called '${ast.value}'`,
spanOf(ast.sourceSpan) !);
spanOf(ast.sourceSpan));
}
}
}
@ -233,12 +237,14 @@ class ExpressionDiagnosticsVisitor extends TemplateAstChildVisitor {
}
}
private reportError(message: string, span: Span) {
private reportError(message: string, span: Span|undefined) {
if (span) {
this.diagnostics.push({
span: offsetSpan(span, this.info.template.span.start),
kind: DiagnosticKind.Error, message
});
}
}
private reportWarning(message: string, span: Span) {
this.diagnostics.push({

18
packages/language-service/src/expressions.ts
View File

@ -495,8 +495,9 @@ class AstType implements ExpressionVisitor {
// The type of a method is the selected methods result type.
const method = receiverType.members().get(ast.name);
if (!method) return this.reportError(`Unknown method ${ast.name}`, ast);
if (!method.type !.callable) return this.reportError(`Member ${ast.name} is not callable`, ast);
const signature = method.type !.selectSignature(ast.args.map(arg => this.getType(arg)));
if (!method.type) return this.reportError(`Could not find a type for ${ast.name}`, ast);
if (!method.type.callable) return this.reportError(`Member ${ast.name} is not callable`, ast);
const signature = method.type.selectSignature(ast.args.map(arg => this.getType(arg)));
if (!signature)
return this.reportError(`Unable to resolve signature for call of method ${ast.name}`, ast);
return signature.result;
@ -601,7 +602,9 @@ function visitChildren(ast: AST, visitor: ExpressionVisitor) {
visit(ast.falseExp);
},
visitFunctionCall(ast) {
visit(ast.target !);
if (ast.target) {
visit(ast.target);
}
visitAll(ast.args);
},
visitImplicitReceiver(ast) {},
@ -676,7 +679,7 @@ function getReferences(info: TemplateInfo): SymbolDeclaration[] {
function processReferences(references: ReferenceAst[]) {
for (const reference of references) {
let type: Symbol = undefined !;
let type: Symbol|undefined = undefined;
if (reference.value) {
type = info.template.query.getTypeSymbol(tokenReference(reference.value));
}
@ -721,7 +724,7 @@ function getVarDeclarations(info: TemplateInfo, path: TemplateAstPath): SymbolDe
.find(c => !!c);
// Determine the type of the context field referenced by variable.value.
let type: Symbol = undefined !;
let type: Symbol|undefined = undefined;
if (context) {
const value = context.get(variable.value);
if (value) {
@ -762,7 +765,10 @@ function refinedVariableType(
const bindingType =
new AstType(info.template.members, info.template.query, {}).getType(ngForOfBinding.value);
if (bindingType) {
return info.template.query.getElementType(bindingType) !;
const result = info.template.query.getElementType(bindingType);
if (result) {
return result;
}
}
}
}

28
packages/language-service/src/language_service.ts
View File

@ -81,24 +81,25 @@ class LanguageServiceImpl implements LanguageService {
let template = this.host.getTemplateAt(fileName, position);
if (template) {
let astResult = this.getTemplateAst(template, fileName);
if (astResult && astResult.htmlAst && astResult.templateAst)
if (astResult && astResult.htmlAst && astResult.templateAst && astResult.directive &&
astResult.directives && astResult.pipes && astResult.expressionParser)
return {
position,
fileName,
template,
htmlAst: astResult.htmlAst,
directive: astResult.directive !,
directives: astResult.directives !,
pipes: astResult.pipes !,
directive: astResult.directive,
directives: astResult.directives,
pipes: astResult.pipes,
templateAst: astResult.templateAst,
expressionParser: astResult.expressionParser !
expressionParser: astResult.expressionParser
};
}
return undefined;
}
getTemplateAst(template: TemplateSource, contextFile: string): AstResult {
let result: AstResult = undefined !;
let result: AstResult|undefined = undefined;
try {
const resolvedMetadata =
this.metadataResolver.getNonNormalizedDirectiveMetadata(template.type as any);
@ -112,7 +113,7 @@ class LanguageServiceImpl implements LanguageService {
config, expressionParser, new DomElementSchemaRegistry(), htmlParser, null !, []);
const htmlResult = htmlParser.parse(template.source, '', true);
const analyzedModules = this.host.getAnalyzedModules();
let errors: Diagnostic[] = undefined !;
let errors: Diagnostic[]|undefined = undefined;
let ngModule = analyzedModules.ngModuleByPipeOrDirective.get(template.type);
if (!ngModule) {
// Reported by the the declaration diagnostics.
@ -121,8 +122,7 @@ class LanguageServiceImpl implements LanguageService {
if (ngModule) {
const resolvedDirectives = ngModule.transitiveModule.directives.map(
d => this.host.resolver.getNonNormalizedDirectiveMetadata(d.reference));
const directives =
resolvedDirectives.filter(d => d !== null).map(d => d !.metadata.toSummary());
const directives = removeMissing(resolvedDirectives).map(d => d.metadata.toSummary());
const pipes = ngModule.transitiveModule.pipes.map(
p => this.host.resolver.getOrLoadPipeMetadata(p.reference).toSummary());
const schemas = ngModule.schemas;
@ -142,10 +142,14 @@ class LanguageServiceImpl implements LanguageService {
}
result = {errors: [{kind: DiagnosticKind.Error, message: e.message, span}]};
}
return result;
return result || {};
}
}
function removeMissing<T>(values: (T | null | undefined)[]): T[] {
return values.filter(e => !!e) as T[];
}
function uniqueBySpan < T extends {
span: Span;
}
@ -169,8 +173,8 @@ function uniqueBySpan < T extends {
}
}
function findSuitableDefaultModule(modules: NgAnalyzedModules): CompileNgModuleMetadata {
let result: CompileNgModuleMetadata = undefined !;
function findSuitableDefaultModule(modules: NgAnalyzedModules): CompileNgModuleMetadata|undefined {
let result: CompileNgModuleMetadata|undefined = undefined;
let resultSize = 0;
for (const module of modules.ngModules) {
const moduleSize = module.transitiveModule.directives.length;

35
packages/language-service/src/locate_symbol.ts
View File

@ -21,23 +21,26 @@ export interface SymbolInfo {
}
export function locateSymbol(info: TemplateInfo): SymbolInfo|undefined {
const templatePosition = info.position ! - info.template.span.start;
if (!info.position) return undefined;
const templatePosition = info.position - info.template.span.start;
const path = new TemplateAstPath(info.templateAst, templatePosition);
if (path.tail) {
let symbol: Symbol = undefined !;
let span: Span = undefined !;
let symbol: Symbol|undefined = undefined;
let span: Span|undefined = undefined;
const attributeValueSymbol = (ast: AST, inEvent: boolean = false): boolean => {
const attribute = findAttribute(info);
if (attribute) {
if (inSpan(templatePosition, spanOf(attribute.valueSpan))) {
const scope = getExpressionScope(info, path, inEvent);
const expressionOffset = attribute.valueSpan !.start.offset + 1;
if (attribute.valueSpan) {
const expressionOffset = attribute.valueSpan.start.offset + 1;
const result = getExpressionSymbol(
scope, ast, templatePosition - expressionOffset, info.template.query);
if (result) {
symbol = result.symbol;
span = offsetSpan(result.span, expressionOffset);
}
}
return true;
}
}
@ -52,28 +55,28 @@ export function locateSymbol(info: TemplateInfo): SymbolInfo|undefined {
if (component) {
symbol = info.template.query.getTypeSymbol(component.directive.type.reference);
symbol = symbol && new OverrideKindSymbol(symbol, 'component');
span = spanOf(ast) !;
span = spanOf(ast);
} else {
// Find a directive that matches the element name
const directive =
ast.directives.find(d => d.directive.selector !.indexOf(ast.name) >= 0);
const directive = ast.directives.find(
d => d.directive.selector != null && d.directive.selector.indexOf(ast.name) >= 0);
if (directive) {
symbol = info.template.query.getTypeSymbol(directive.directive.type.reference);
symbol = symbol && new OverrideKindSymbol(symbol, 'directive');
span = spanOf(ast) !;
span = spanOf(ast);
}
}
},
visitReference(ast) {
symbol = info.template.query.getTypeSymbol(tokenReference(ast.value));
span = spanOf(ast) !;
span = spanOf(ast);
},
visitVariable(ast) {},
visitEvent(ast) {
if (!attributeValueSymbol(ast.handler, /* inEvent */ true)) {
symbol = findOutputBinding(info, path, ast) !;
symbol = findOutputBinding(info, path, ast);
symbol = symbol && new OverrideKindSymbol(symbol, 'event');
span = spanOf(ast) !;
span = spanOf(ast);
}
},
visitElementProperty(ast) { attributeValueSymbol(ast.value); },
@ -93,12 +96,12 @@ export function locateSymbol(info: TemplateInfo): SymbolInfo|undefined {
visitText(ast) {},
visitDirective(ast) {
symbol = info.template.query.getTypeSymbol(ast.directive.type.reference);
span = spanOf(ast) !;
span = spanOf(ast);
},
visitDirectiveProperty(ast) {
if (!attributeValueSymbol(ast.value)) {
symbol = findInputBinding(info, path, ast) !;
span = spanOf(ast) !;
symbol = findInputBinding(info, path, ast);
span = spanOf(ast);
}
}
},
@ -110,10 +113,12 @@ export function locateSymbol(info: TemplateInfo): SymbolInfo|undefined {
}
function findAttribute(info: TemplateInfo): Attribute|undefined {
const templatePosition = info.position ! - info.template.span.start;
if (info.position) {
const templatePosition = info.position - info.template.span.start;
const path = new HtmlAstPath(info.htmlAst, templatePosition);
return path.first(Attribute);
}
}
function findInputBinding(
info: TemplateInfo, path: TemplateAstPath, binding: BoundDirectivePropertyAst): Symbol|

8
packages/language-service/src/reflector_host.ts
View File

@ -22,18 +22,24 @@ class ReflectorModuleModuleResolutionHost implements ts.ModuleResolutionHost {
if (snapshot) {
return snapshot.getText(0, snapshot.getLength());
}
// Typescript readFile() declaration should be `readFile(fileName: string): string | undefined
return undefined !;
}
directoryExists: (directoryName: string) => boolean;
}
// This reflector host's purpose is to first set verboseInvalidExpressions to true so the
// reflector will collect errors instead of throwing, and second to all deferring the creation
// of the program until it is actually needed.
export class ReflectorHost extends CompilerHost {
constructor(
private getProgram: () => ts.Program, serviceHost: ts.LanguageServiceHost,
options: AngularCompilerOptions) {
super(
null !, options,
// The ancestor value for program is overridden below so passing null here is safe.
/* program */ null !, options,
new ModuleResolutionHostAdapter(new ReflectorModuleModuleResolutionHost(serviceHost)),
{verboseInvalidExpression: true});
}

4
packages/language-service/src/template_path.ts
View File

@ -104,10 +104,10 @@ class TemplateAstPathBuilder extends TemplateAstChildVisitor {
constructor(private position: number, private allowWidening: boolean) { super(); }
visit(ast: TemplateAst, context: any): any {
let span = spanOf(ast) !;
let span = spanOf(ast);
if (inSpan(this.position, span)) {
const len = this.path.length;
if (!len || this.allowWidening || isNarrower(span, spanOf(this.path[len - 1]) !)) {
if (!len || this.allowWidening || isNarrower(span, spanOf(this.path[len - 1]))) {
this.path.push(ast);
}
} else {

8
packages/language-service/src/ts_plugin.ts
View File

@ -170,14 +170,16 @@ export function create(info: any /* ts.server.PluginCreateInfo */): ts.LanguageS
}
function diagnosticToDiagnostic(d: Diagnostic, file: ts.SourceFile): ts.Diagnostic {
return {
const result = {
file,
start: d.span.start,
length: d.span.end - d.span.start,
messageText: d.message,
category: ts.DiagnosticCategory.Error,
code: 0
code: 0,
source: 'ng'
};
return result;
}
function tryOperation<T>(attempting: string, callback: () => T): T|null {
@ -229,7 +231,7 @@ export function create(info: any /* ts.server.PluginCreateInfo */): ts.LanguageS
if (ours) {
const displayParts: ts.SymbolDisplayPart[] = [];
for (const part of ours.text) {
displayParts.push({kind: part.language !, text: part.text});
displayParts.push({kind: part.language || 'angular', text: part.text});
}
const tags = base && (<any>base).tags;
base = <any>{

4
packages/language-service/src/types.ts
View File

@ -8,8 +8,6 @@
import {CompileDirectiveMetadata, CompileMetadataResolver, NgAnalyzedModules, StaticSymbol} from '@angular/compiler';
/**
* The range of a span of text in a source file.
*
@ -455,7 +453,7 @@ export interface LanguageServiceHost {
* refers to a template file then the `position` should be ignored. If the `position` is not in a
* template literal string then this method should return `undefined`.
*/
getTemplateAt(fileName: string, position: number): TemplateSource /* |undefined */;
getTemplateAt(fileName: string, position: number): TemplateSource|undefined;
/**
* Return the template source information for all templates in `fileName` or for `fileName` if it

76
packages/language-service/src/typescript_host.ts
View File

@ -74,22 +74,22 @@ export class DummyResourceLoader extends ResourceLoader {
* @experimental
*/
export class TypeScriptServiceHost implements LanguageServiceHost {
private _resolver: CompileMetadataResolver;
private _resolver: CompileMetadataResolver|null;
private _staticSymbolCache = new StaticSymbolCache();
private _summaryResolver: AotSummaryResolver;
private _staticSymbolResolver: StaticSymbolResolver;
private _reflector: StaticReflector;
private _reflector: StaticReflector|null;
private _reflectorHost: ReflectorHost;
private _checker: ts.TypeChecker;
private _checker: ts.TypeChecker|null;
private _typeCache: Symbol[] = [];
private context: string|undefined;
private lastProgram: ts.Program|undefined;
private modulesOutOfDate: boolean = true;
private analyzedModules: NgAnalyzedModules;
private analyzedModules: NgAnalyzedModules|null;
private service: LanguageService;
private fileToComponent: Map<string, StaticSymbol>;
private templateReferences: string[];
private collectedErrors: Map<string, any[]>;
private fileToComponent: Map<string, StaticSymbol>|null;
private templateReferences: string[]|null;
private collectedErrors: Map<string, any[]>|null;
private fileVersions = new Map<string, string>();
constructor(private host: ts.LanguageServiceHost, private tsService: ts.LanguageService) {}
@ -127,28 +127,28 @@ export class TypeScriptServiceHost implements LanguageServiceHost {
getTemplateReferences(): string[] {
this.ensureTemplateMap();
return this.templateReferences;
return this.templateReferences || [];
}
getTemplateAt(fileName: string, position: number): TemplateSource {
getTemplateAt(fileName: string, position: number): TemplateSource|undefined {
let sourceFile = this.getSourceFile(fileName);
if (sourceFile) {
this.context = sourceFile.fileName;
let node = this.findNode(sourceFile, position);
if (node) {
return this.getSourceFromNode(
fileName, this.host.getScriptVersion(sourceFile.fileName), node) !;
fileName, this.host.getScriptVersion(sourceFile.fileName), node);
}
} else {
this.ensureTemplateMap();
// TODO: Cannocalize the file?
const componentType = this.fileToComponent.get(fileName);
const componentType = this.fileToComponent !.get(fileName);
if (componentType) {
return this.getSourceFromType(
fileName, this.host.getScriptVersion(fileName), componentType) !;
fileName, this.host.getScriptVersion(fileName), componentType);
}
}
return null !;
return undefined;
}
getAnalyzedModules(): NgAnalyzedModules {
@ -172,7 +172,7 @@ export class TypeScriptServiceHost implements LanguageServiceHost {
getTemplates(fileName: string): TemplateSources {
this.ensureTemplateMap();
const componentType = this.fileToComponent.get(fileName);
const componentType = this.fileToComponent !.get(fileName);
if (componentType) {
const templateSource = this.getTemplateAt(fileName, 0);
if (templateSource) {
@ -225,10 +225,10 @@ export class TypeScriptServiceHost implements LanguageServiceHost {
updateAnalyzedModules() {
this.validate();
if (this.modulesOutOfDate) {
this.analyzedModules = null !;
this._reflector = null !;
this.templateReferences = null !;
this.fileToComponent = null !;
this.analyzedModules = null;
this._reflector = null;
this.templateReferences = null;
this.fileToComponent = null;
this.ensureAnalyzedModules();
this.modulesOutOfDate = false;
}
@ -273,10 +273,10 @@ export class TypeScriptServiceHost implements LanguageServiceHost {
}
private clearCaches() {
this._checker = null !;
this._checker = null;
this._typeCache = [];
this._resolver = null !;
this.collectedErrors = null !;
this._resolver = null;
this.collectedErrors = null;
this.modulesOutOfDate = true;
}
@ -345,7 +345,7 @@ export class TypeScriptServiceHost implements LanguageServiceHost {
if (declaration && declaration.name) {
const sourceFile = this.getSourceFile(fileName);
return this.getSourceFromDeclaration(
fileName, version, this.stringOf(node) !, shrink(spanOf(node)),
fileName, version, this.stringOf(node) || '', shrink(spanOf(node)),
this.reflector.getStaticSymbol(sourceFile.fileName, declaration.name.text),
declaration, node, sourceFile);
}
@ -359,11 +359,13 @@ export class TypeScriptServiceHost implements LanguageServiceHost {
let result: TemplateSource|undefined = undefined;
const declaration = this.getTemplateClassFromStaticSymbol(type);
if (declaration) {
const snapshot = this.host.getScriptSnapshot(fileName) !;
const snapshot = this.host.getScriptSnapshot(fileName);
if (snapshot) {
const source = snapshot.getText(0, snapshot.getLength());
result = this.getSourceFromDeclaration(
fileName, version, source, {start: 0, end: source.length}, type, declaration, declaration,
declaration.getSourceFile());
fileName, version, source, {start: 0, end: source.length}, type, declaration,
declaration, declaration.getSourceFile());
}
}
return result;
}
@ -398,9 +400,10 @@ export class TypeScriptServiceHost implements LanguageServiceHost {
return result;
}
private collectError(error: any, filePath: string) {
private collectError(error: any, filePath: string|null) {
if (filePath) {
let errorMap = this.collectedErrors;
if (!errorMap) {
if (!errorMap || !this.collectedErrors) {
errorMap = this.collectedErrors = new Map();
}
let errors = errorMap.get(filePath);
@ -410,15 +413,16 @@ export class TypeScriptServiceHost implements LanguageServiceHost {
}
errors.push(error);
}
}
private get staticSymbolResolver(): StaticSymbolResolver {
let result = this._staticSymbolResolver;
if (!result) {
this._summaryResolver = new AotSummaryResolver(
{
loadSummary(filePath: string) { return null !; },
isSourceFile(sourceFilePath: string) { return true !; },
getOutputFileName(sourceFilePath: string) { return null !; }
loadSummary(filePath: string) { return null; },
isSourceFile(sourceFilePath: string) { return true; },
getOutputFileName(sourceFilePath: string) { return sourceFilePath; }
},
this._staticSymbolCache);
result = this._staticSymbolResolver = new StaticSymbolResolver(
@ -445,7 +449,7 @@ export class TypeScriptServiceHost implements LanguageServiceHost {
const declarationNode = ts.forEachChild(source, child => {
if (child.kind === ts.SyntaxKind.ClassDeclaration) {
const classDeclaration = child as ts.ClassDeclaration;
if (classDeclaration.name !.text === type.name) {
if (classDeclaration.name != null && classDeclaration.name.text === type.name) {
return classDeclaration;
}
}
@ -614,7 +618,7 @@ class TypeScriptSymbolQuery implements SymbolQuery {
private program: ts.Program, private checker: ts.TypeChecker, private source: ts.SourceFile,
private fetchPipes: () => SymbolTable) {}
getTypeKind(symbol: Symbol): BuiltinType { return typeKindOf(this.getTsTypeOf(symbol) !); }
getTypeKind(symbol: Symbol): BuiltinType { return typeKindOf(this.getTsTypeOf(symbol)); }
getBuiltinType(kind: BuiltinType): Symbol {
// TODO: Replace with typeChecker API when available.
@ -1303,7 +1307,7 @@ function getTypeParameterOf(type: ts.Type, name: string): ts.Type|undefined {
}
}
function typeKindOf(type: ts.Type): BuiltinType {
function typeKindOf(type: ts.Type | undefined): BuiltinType {
if (type) {
if (type.flags & ts.TypeFlags.Any) {
return BuiltinType.Any;
@ -1318,17 +1322,19 @@ function typeKindOf(type: ts.Type): BuiltinType {
return BuiltinType.Null;
} else if (type.flags & ts.TypeFlags.Union) {
// If all the constituent types of a union are the same kind, it is also that kind.
let candidate: BuiltinType = undefined !;
let candidate: BuiltinType|null = null;
const unionType = type as ts.UnionType;
if (unionType.types.length > 0) {
candidate = typeKindOf(unionType.types[0]) !;
candidate = typeKindOf(unionType.types[0]);
for (const subType of unionType.types) {
if (candidate != typeKindOf(subType)) {
return BuiltinType.Other;
}
}
}
if (candidate != null) {
return candidate;
}
} else if (type.flags & ts.TypeFlags.TypeParameter) {
return BuiltinType.Unbound;
}

10
packages/language-service/src/utils.ts
View File

@ -21,6 +21,9 @@ export function isParseSourceSpan(value: any): value is ParseSourceSpan {
return value && !!value.start;
}
export function spanOf(span: SpanHolder): Span;
export function spanOf(span: ParseSourceSpan): Span;
export function spanOf(span: SpanHolder | ParseSourceSpan | undefined): Span|undefined;
export function spanOf(span?: SpanHolder | ParseSourceSpan): Span|undefined {
if (!span) return undefined;
if (isParseSourceSpan(span)) {
@ -39,8 +42,8 @@ export function spanOf(span?: SpanHolder | ParseSourceSpan): Span|undefined {
}
export function inSpan(position: number, span?: Span, exclusive?: boolean): boolean {
return span && exclusive ? position >= span.start && position < span.end :
position >= span !.start && position <= span !.end;
return span != null && (exclusive ? position >= span.start && position < span.end :
position >= span.start && position <= span.end);
}
export function offsetSpan(span: Span, amount: number): Span {
@ -54,7 +57,8 @@ export function isNarrower(spanA: Span, spanB: Span): boolean {
export function hasTemplateReference(type: CompileTypeMetadata): boolean {
if (type.diDeps) {
for (let diDep of type.diDeps) {
if (diDep.token !.identifier && identifierName(diDep.token !.identifier !) == 'TemplateRef')
if (diDep.token && diDep.token.identifier &&
identifierName(diDep.token !.identifier !) == 'TemplateRef')
return true;
}
}