refactor(ivy): compute ignoreFiles for compilation on initialization (#34792)

This commit moves the calculation of `ignoreFiles` - the set of files to be
ignored by a consumer of the `NgCompiler` API - from its `prepareEmit`
operation to its initialization. It's now available as a field on
`NgCompiler`.

This will allow a consumer to skip gathering diagnostics for `ignoreFiles`
as well as skip emit.

PR Close #34792

packages/compiler-cli/src/ngtsc/core/src/compiler.ts

@@ -97,6 +97,8 @@ export class NgCompiler {
   private resourceManager: HostResourceLoader;
   private cycleAnalyzer: CycleAnalyzer;
   readonly incrementalDriver: IncrementalDriver;
+  readonly ignoreForDiagnostics: Set<ts.SourceFile>;
+  readonly ignoreForEmit: Set<ts.SourceFile>;
 
   constructor(
       private host: NgCompilerHost, private options: NgCompilerOptions,
@@ -142,6 +144,14 @@ export class NgCompiler {
       }
     }
     setIncrementalDriver(tsProgram, this.incrementalDriver);
+
+    this.ignoreForDiagnostics = new Set([
+      this.typeCheckFile,
+      ...host.factoryFiles.map(fileName => getSourceFileOrError(tsProgram, fileName)),
+      ...host.summaryFiles.map(fileName => getSourceFileOrError(tsProgram, fileName)),
+    ]);
+
+    this.ignoreForEmit = new Set([this.typeCheckFile]);
   }
 
   /**
@@ -285,7 +295,6 @@ export class NgCompiler {
    */
   prepareEmit(): {
     transformers: ts.CustomTransformers,
-    ignoreFiles: Set<ts.SourceFile>,
   } {
     const compilation = this.ensureAnalyzed();
 
@@ -321,9 +330,7 @@ export class NgCompiler {
     }
     before.push(ivySwitchTransform);
 
-    const ignoreFiles = new Set<ts.SourceFile>([this.typeCheckFile]);
-
-    return {transformers: {before, afterDeclarations} as ts.CustomTransformers, ignoreFiles};
+    return {transformers: {before, afterDeclarations} as ts.CustomTransformers};
   }
 
   /**

packages/compiler-cli/src/ngtsc/core/src/host.ts

@@ -97,17 +97,22 @@ export class NgCompilerHost extends DelegatingCompilerHost implements
   readonly inputFiles: ReadonlyArray<string>;
   readonly rootDirs: ReadonlyArray<AbsoluteFsPath>;
   readonly typeCheckFile: AbsoluteFsPath;
+  readonly factoryFiles: AbsoluteFsPath[];
+  readonly summaryFiles: AbsoluteFsPath[];
 
   constructor(
       delegate: ExtendedTsCompilerHost, inputFiles: ReadonlyArray<string>,
       rootDirs: ReadonlyArray<AbsoluteFsPath>, private shims: ShimGenerator[],
       entryPoint: AbsoluteFsPath|null, typeCheckFile: AbsoluteFsPath,
+      factoryFiles: AbsoluteFsPath[], summaryFiles: AbsoluteFsPath[],
       factoryTracker: FactoryTracker|null, diagnostics: ts.Diagnostic[]) {
     super(delegate);
 
     this.factoryTracker = factoryTracker;
     this.entryPoint = entryPoint;
     this.typeCheckFile = typeCheckFile;
+    this.factoryFiles = factoryFiles;
+    this.summaryFiles = summaryFiles;
     this.diagnostics = diagnostics;
     this.inputFiles = inputFiles;
     this.rootDirs = rootDirs;
@@ -136,31 +141,36 @@ export class NgCompilerHost extends DelegatingCompilerHost implements
 
     const generators: ShimGenerator[] = [];
     let summaryGenerator: SummaryGenerator|null = null;
+    let summaryFiles: AbsoluteFsPath[];
 
     if (shouldGenerateSummaryShims) {
       // Summary generation.
       summaryGenerator = SummaryGenerator.forRootFiles(normalizedInputFiles);
       generators.push(summaryGenerator);
+      summaryFiles = summaryGenerator.getSummaryFileNames();
+    } else {
+      summaryFiles = [];
     }
 
     let factoryTracker: FactoryTracker|null = null;
+    let factoryFiles: AbsoluteFsPath[];
     if (shouldGenerateFactoryShims) {
       // Factory generation.
       const factoryGenerator = FactoryGenerator.forRootFiles(normalizedInputFiles);
       const factoryFileMap = factoryGenerator.factoryFileMap;
 
-      const factoryFileNames = Array.from(factoryFileMap.keys());
-      rootFiles.push(...factoryFileNames);
+      factoryFiles = Array.from(factoryFileMap.keys());
+      rootFiles.push(...factoryFiles);
       generators.push(factoryGenerator);
 
       factoryTracker = new FactoryTracker(factoryGenerator);
+    } else {
+      factoryFiles = [];
     }
 
     // Done separately to preserve the order of factory files before summary files in rootFiles.
     // TODO(alxhub): validate that this is necessary.
-    if (summaryGenerator !== null) {
-      rootFiles.push(...summaryGenerator.getSummaryFileNames());
-    }
+    rootFiles.push(...summaryFiles);
 
 
     const rootDirs = getRootDirs(delegate, options as ts.CompilerOptions);
@@ -203,8 +213,8 @@ export class NgCompilerHost extends DelegatingCompilerHost implements
     }
 
     return new NgCompilerHost(
-        delegate, rootFiles, rootDirs, generators, entryPoint, typeCheckFile, factoryTracker,
-        diagnostics);
+        delegate, rootFiles, rootDirs, generators, entryPoint, typeCheckFile, factoryFiles,
+        summaryFiles, factoryTracker, diagnostics);
   }
 
   getSourceFile(

packages/compiler-cli/src/ngtsc/program.ts

@@ -88,13 +88,43 @@ export class NgtscProgram implements api.Program {
   getTsSyntacticDiagnostics(
       sourceFile?: ts.SourceFile|undefined,
       cancellationToken?: ts.CancellationToken|undefined): readonly ts.Diagnostic[] {
-    return this.tsProgram.getSyntacticDiagnostics(sourceFile, cancellationToken);
+    const ignoredFiles = this.compiler.ignoreForDiagnostics;
+    if (sourceFile !== undefined) {
+      if (ignoredFiles.has(sourceFile)) {
+        return [];
+      }
+
+      return this.tsProgram.getSyntacticDiagnostics(sourceFile, cancellationToken);
+    } else {
+      const diagnostics: ts.Diagnostic[] = [];
+      for (const sf of this.tsProgram.getSourceFiles()) {
+        if (!ignoredFiles.has(sf)) {
+          diagnostics.push(...this.tsProgram.getSyntacticDiagnostics(sf, cancellationToken));
+        }
+      }
+      return diagnostics;
+    }
   }
 
   getTsSemanticDiagnostics(
       sourceFile?: ts.SourceFile|undefined,
       cancellationToken?: ts.CancellationToken|undefined): readonly ts.Diagnostic[] {
-    return this.tsProgram.getSemanticDiagnostics(sourceFile, cancellationToken);
+    const ignoredFiles = this.compiler.ignoreForDiagnostics;
+    if (sourceFile !== undefined) {
+      if (ignoredFiles.has(sourceFile)) {
+        return [];
+      }
+
+      return this.tsProgram.getSemanticDiagnostics(sourceFile, cancellationToken);
+    } else {
+      const diagnostics: ts.Diagnostic[] = [];
+      for (const sf of this.tsProgram.getSourceFiles()) {
+        if (!ignoredFiles.has(sf)) {
+          diagnostics.push(...this.tsProgram.getSemanticDiagnostics(sf, cancellationToken));
+        }
+      }
+      return diagnostics;
+    }
   }
 
   getNgOptionDiagnostics(cancellationToken?: ts.CancellationToken|
@@ -144,7 +174,8 @@ export class NgtscProgram implements api.Program {
     emitCallback?: api.TsEmitCallback | undefined;
     mergeEmitResultsCallback?: api.TsMergeEmitResultsCallback | undefined;
   }|undefined): ts.EmitResult {
-    const {transformers, ignoreFiles} = this.compiler.prepareEmit();
+    const {transformers} = this.compiler.prepareEmit();
+    const ignoreFiles = this.compiler.ignoreForEmit;
     const emitCallback = opts && opts.emitCallback || defaultEmitCallback;
 
     const writeFile: ts.WriteFileCallback =

packages/compiler-cli/src/ngtsc/shims/src/factory_generator.ts

@@ -22,9 +22,11 @@ const STRIP_NG_FACTORY = /(.*)NgFactory$/;
  * class of an input ts.SourceFile.
  */
 export class FactoryGenerator implements ShimGenerator {
-  private constructor(private map: Map<string, string>) {}
+  private constructor(private map: Map<AbsoluteFsPath, AbsoluteFsPath>) {}
 
-  get factoryFileMap(): Map<string, string> { return this.map; }
+  get factoryFileMap(): Map<AbsoluteFsPath, AbsoluteFsPath> { return this.map; }
+
+  get factoryFileNames(): AbsoluteFsPath[] { return Array.from(this.map.keys()); }
 
   recognize(fileName: AbsoluteFsPath): boolean { return this.map.has(fileName); }
 
@@ -101,7 +103,7 @@ export class FactoryGenerator implements ShimGenerator {
   }
 
   static forRootFiles(files: ReadonlyArray<AbsoluteFsPath>): FactoryGenerator {
-    const map = new Map<AbsoluteFsPath, string>();
+    const map = new Map<AbsoluteFsPath, AbsoluteFsPath>();
     files.filter(sourceFile => isNonDeclarationTsPath(sourceFile))
         .forEach(
             sourceFile =>

packages/compiler-cli/src/ngtsc/shims/src/summary_generator.ts

@@ -15,9 +15,9 @@ import {ShimGenerator} from './api';
 import {generatedModuleName} from './util';
 
 export class SummaryGenerator implements ShimGenerator {
-  private constructor(private map: Map<AbsoluteFsPath, string>) {}
+  private constructor(private map: Map<AbsoluteFsPath, AbsoluteFsPath>) {}
 
-  getSummaryFileNames(): string[] { return Array.from(this.map.keys()); }
+  getSummaryFileNames(): AbsoluteFsPath[] { return Array.from(this.map.keys()); }
 
   recognize(fileName: AbsoluteFsPath): boolean { return this.map.has(fileName); }
 
@@ -78,7 +78,7 @@ export class SummaryGenerator implements ShimGenerator {
   }
 
   static forRootFiles(files: ReadonlyArray<AbsoluteFsPath>): SummaryGenerator {
-    const map = new Map<AbsoluteFsPath, string>();
+    const map = new Map<AbsoluteFsPath, AbsoluteFsPath>();
     files.filter(sourceFile => isNonDeclarationTsPath(sourceFile))
         .forEach(
             sourceFile =>