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@angular/compiler

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/** * @license * Copyright Google Inc. 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 */ import { Identifiers, createTokenForExternalReference } from '../identifiers'; import { LifecycleHooks } from '../lifecycle_reflector'; import * as o from '../output/output_ast'; import { convertValueToOutputAst } from '../output/value_util'; import { ProviderAstType } from '../template_parser/template_ast'; export function providerDef(ctx, providerAst) { let flags = 0 /* None */; if (!providerAst.eager) { flags |= 4096 /* LazyProvider */; } if (providerAst.providerType === ProviderAstType.PrivateService) { flags |= 8192 /* PrivateProvider */; } if (providerAst.isModule) { flags |= 1073741824 /* TypeModuleProvider */; } providerAst.lifecycleHooks.forEach((lifecycleHook) => { // for regular providers, we only support ngOnDestroy if (lifecycleHook === LifecycleHooks.OnDestroy || providerAst.providerType === ProviderAstType.Directive || providerAst.providerType === ProviderAstType.Component) { flags |= lifecycleHookToNodeFlag(lifecycleHook); } }); const { providerExpr, flags: providerFlags, depsExpr } = providerAst.multiProvider ? multiProviderDef(ctx, flags, providerAst.providers) : singleProviderDef(ctx, flags, providerAst.providerType, providerAst.providers[0]); return { providerExpr, flags: providerFlags, depsExpr, tokenExpr: tokenExpr(ctx, providerAst.token), }; } function multiProviderDef(ctx, flags, providers) { const allDepDefs = []; const allParams = []; const exprs = providers.map((provider, providerIndex) => { let expr; if (provider.useClass) { const depExprs = convertDeps(providerIndex, provider.deps || provider.useClass.diDeps); expr = ctx.importExpr(provider.useClass.reference).instantiate(depExprs); } else if (provider.useFactory) { const depExprs = convertDeps(providerIndex, provider.deps || provider.useFactory.diDeps); expr = ctx.importExpr(provider.useFactory.reference).callFn(depExprs); } else if (provider.useExisting) { const depExprs = convertDeps(providerIndex, [{ token: provider.useExisting }]); expr = depExprs[0]; } else { expr = convertValueToOutputAst(ctx, provider.useValue); } return expr; }); const providerExpr = o.fn(allParams, [new o.ReturnStatement(o.literalArr(exprs))], o.INFERRED_TYPE); return { providerExpr, flags: flags | 1024 /* TypeFactoryProvider */, depsExpr: o.literalArr(allDepDefs) }; function convertDeps(providerIndex, deps) { return deps.map((dep, depIndex) => { const paramName = `p${providerIndex}_${depIndex}`; allParams.push(new o.FnParam(paramName, o.DYNAMIC_TYPE)); allDepDefs.push(depDef(ctx, dep)); return o.variable(paramName); }); } } function singleProviderDef(ctx, flags, providerType, providerMeta) { let providerExpr; let deps; if (providerType === ProviderAstType.Directive || providerType === ProviderAstType.Component) { providerExpr = ctx.importExpr(providerMeta.useClass.reference); flags |= 16384 /* TypeDirective */; deps = providerMeta.deps || providerMeta.useClass.diDeps; } else { if (providerMeta.useClass) { providerExpr = ctx.importExpr(providerMeta.useClass.reference); flags |= 512 /* TypeClassProvider */; deps = providerMeta.deps || providerMeta.useClass.diDeps; } else if (providerMeta.useFactory) { providerExpr = ctx.importExpr(providerMeta.useFactory.reference); flags |= 1024 /* TypeFactoryProvider */; deps = providerMeta.deps || providerMeta.useFactory.diDeps; } else if (providerMeta.useExisting) { providerExpr = o.NULL_EXPR; flags |= 2048 /* TypeUseExistingProvider */; deps = [{ token: providerMeta.useExisting }]; } else { providerExpr = convertValueToOutputAst(ctx, providerMeta.useValue); flags |= 256 /* TypeValueProvider */; deps = []; } } const depsExpr = o.literalArr(deps.map(dep => depDef(ctx, dep))); return { providerExpr, flags, depsExpr }; } function tokenExpr(ctx, tokenMeta) { return tokenMeta.identifier ? ctx.importExpr(tokenMeta.identifier.reference) : o.literal(tokenMeta.value); } export function depDef(ctx, dep) { // Note: the following fields have already been normalized out by provider_analyzer: // - isAttribute, isHost const expr = dep.isValue ? convertValueToOutputAst(ctx, dep.value) : tokenExpr(ctx, dep.token); let flags = 0 /* None */; if (dep.isSkipSelf) { flags |= 1 /* SkipSelf */; } if (dep.isOptional) { flags |= 2 /* Optional */; } if (dep.isSelf) { flags |= 4 /* Self */; } if (dep.isValue) { flags |= 8 /* Value */; } return flags === 0 /* None */ ? expr : o.literalArr([o.literal(flags), expr]); } export function lifecycleHookToNodeFlag(lifecycleHook) { let nodeFlag = 0 /* None */; switch (lifecycleHook) { case LifecycleHooks.AfterContentChecked: nodeFlag = 2097152 /* AfterContentChecked */; break; case LifecycleHooks.AfterContentInit: nodeFlag = 1048576 /* AfterContentInit */; break; case LifecycleHooks.AfterViewChecked: nodeFlag = 8388608 /* AfterViewChecked */; break; case LifecycleHooks.AfterViewInit: nodeFlag = 4194304 /* AfterViewInit */; break; case LifecycleHooks.DoCheck: nodeFlag = 262144 /* DoCheck */; break; case LifecycleHooks.OnChanges: nodeFlag = 524288 /* OnChanges */; break; case LifecycleHooks.OnDestroy: nodeFlag = 131072 /* OnDestroy */; break; case LifecycleHooks.OnInit: nodeFlag = 65536 /* OnInit */; break; } return nodeFlag; } export function componentFactoryResolverProviderDef(reflector, ctx, flags, entryComponents) { const entryComponentFactories = entryComponents.map((entryComponent) => ctx.importExpr(entryComponent.componentFactory)); const token = createTokenForExternalReference(reflector, Identifiers.ComponentFactoryResolver); const classMeta = { diDeps: [ { isValue: true, value: o.literalArr(entryComponentFactories) }, { token: token, isSkipSelf: true, isOptional: true }, { token: createTokenForExternalReference(reflector, Identifiers.NgModuleRef) }, ], lifecycleHooks: [], reference: reflector.resolveExternalReference(Identifiers.CodegenComponentFactoryResolver) }; const { providerExpr, flags: providerFlags, depsExpr } = singleProviderDef(ctx, flags, ProviderAstType.PrivateService, { token, multi: false, useClass: classMeta, }); return { providerExpr, flags: providerFlags, depsExpr, tokenExpr: tokenExpr(ctx, token) }; } //# 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* @license\n * Copyright Google Inc. 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 {CompileDiDependencyMetadata, CompileEntryComponentMetadata, CompileProviderMetadata, CompileTokenMetadata} from '../compile_metadata';\nimport {CompileReflector} from '../compile_reflector';\nimport {DepFlags, NodeFlags} from '../core';\nimport {Identifiers, createTokenForExternalReference} from '../identifiers';\nimport {LifecycleHooks} from '../lifecycle_reflector';\nimport * as o from '../output/output_ast';\nimport {convertValueToOutputAst} from '../output/value_util';\nimport {ProviderAst, ProviderAstType} from '../template_parser/template_ast';\nimport {OutputContext} from '../util';\n\nexport function providerDef(ctx: OutputContext, providerAst: ProviderAst): {\n  providerExpr: o.Expression,\n  flags: NodeFlags,\n  depsExpr: o.Expression,\n  tokenExpr: o.Expression\n} {\n  let flags = NodeFlags.None;\n  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};\n}\n\nfunction multiProviderDef(\n    ctx: OutputContext, flags: NodeFlags, providers: CompileProviderMetadata[]):\n    {providerExpr: o.Expression, flags: NodeFlags, depsExpr: o.Expression} {\n  const allDepDefs: o.Expression[] = [];\n  const allParams: o.FnParam[] = [];\n  const exprs = providers.map((provider, providerIndex) => {\n    let expr: o.Expression;\n    if (provider.useClass) {\n      const depExprs = convertDeps(providerIndex, provider.deps || provider.useClass.diDeps);\n      expr = ctx.importExpr(provider.useClass.reference).instantiate(depExprs);\n    } else if (provider.useFactory) {\n      const depExprs = convertDeps(providerIndex, provider.deps || provider.useFactory.diDeps);\n      expr = ctx.importExpr(provider.useFactory.reference).callFn(depExprs);\n    } else if (provider.useExisting) {\n      const depExprs = convertDeps(providerIndex, [{token: provider.useExisting}]);\n      expr = depExprs[0];\n    } else {\n      expr = convertValueToOutputAst(ctx, provider.useValue);\n    }\n    return expr;\n  });\n  const providerExpr =\n      o.fn(allParams, [new o.ReturnStatement(o.literalArr(exprs))], o.INFERRED_TYPE);\n  return {\n    providerExpr,\n    flags: flags | NodeFlags.TypeFactoryProvider,\n    depsExpr: o.literalArr(allDepDefs)\n  };\n\n  function convertDeps(providerIndex: number, deps: CompileDiDependencyMetadata[]) {\n    return deps.map((dep, depIndex) => {\n      const paramName = `p${providerIndex}_${depIndex}`;\n      allParams.push(new o.FnParam(paramName, o.DYNAMIC_TYPE));\n      allDepDefs.push(depDef(ctx, dep));\n      return o.variable(paramName);\n    });\n  }\n}\n\nfunction singleProviderDef(\n    ctx: OutputContext, flags: NodeFlags, providerType: ProviderAstType,\n    providerMeta: CompileProviderMetadata):\n    {providerExpr: o.Expression, flags: NodeFlags, depsExpr: o.Expression} {\n  let providerExpr: o.Expression;\n  let deps: CompileDiDependencyMetadata[];\n  if (providerType === ProviderAstType.Directive || providerType === ProviderAstType.Component) {\n    providerExpr = ctx.importExpr(providerMeta.useClass !.reference);\n    flags |= NodeFlags.TypeDirective;\n    deps = providerMeta.deps || providerMeta.useClass !.diDeps;\n  } else {\n    if (providerMeta.useClass) {\n      providerExpr = ctx.importExpr(providerMeta.useClass.reference);\n      flags |= NodeFlags.TypeClassProvider;\n      deps = providerMeta.deps || providerMeta.useClass.diDeps;\n    } else if (providerMeta.useFactory) {\n      providerExpr = ctx.importExpr(providerMeta.useFactory.reference);\n      flags |= NodeFlags.TypeFactoryProvider;\n      deps = providerMeta.deps || providerMeta.useFactory.diDeps;\n    } else if (providerMeta.useExisting) {\n      providerExpr = o.NULL_EXPR;\n      flags |= NodeFlags.TypeUseExistingProvider;\n      deps = [{token: providerMeta.useExisting}];\n    } else {\n      providerExpr = convertValueToOutputAst(ctx, providerMeta.useValue);\n      flags |= NodeFlags.TypeValueProvider;\n      deps = [];\n    }\n  }\n  const depsExpr = o.literalArr(deps.map(dep => depDef(ctx, dep)));\n  return {providerExpr, flags, depsExpr};\n}\n\nfunction tokenExpr(ctx: OutputContext, tokenMeta: CompileTokenMetadata): o.Expression {\n  return tokenMeta.identifier ? ctx.importExpr(tokenMeta.identifier.reference) :\n                                o.literal(tokenMeta.value);\n}\n\nexport function depDef(ctx: OutputContext, dep: CompileDiDependencyMetadata): o.Expression {\n  // Note: the following fields have already been normalized out by provider_analyzer:\n  // - isAttribute, isHost\n  const expr = dep.isValue ? convertValueToOutputAst(ctx, dep.value) : tokenExpr(ctx, dep.token !);\n  let flags = DepFlags.None;\n  if (dep.isSkipSelf) {\n    flags |= DepFlags.SkipSelf;\n  }\n  if (dep.isOptional) {\n    flags |= DepFlags.Optional;\n  }\n  if (dep.isSelf) {\n    flags |= DepFlags.Self;\n  }\n  if (dep.isValue) {\n    flags |= DepFlags.Value;\n  }\n  return flags === DepFlags.None ? expr : o.literalArr([o.literal(flags), expr]);\n}\n\nexport function lifecycleHookToNodeFlag(lifecycleHook: LifecycleHooks): NodeFlags {\n  let nodeFlag = NodeFlags.None;\n  switch (lifecycleHook) {\n    case LifecycleHooks.AfterContentChecked:\n      nodeFlag = NodeFlags.AfterContentChecked;\n      break;\n    case LifecycleHooks.AfterContentInit:\n      nodeFlag = NodeFlags.AfterContentInit;\n      break;\n    case LifecycleHooks.AfterViewChecked:\n      nodeFlag = NodeFlags.AfterViewChecked;\n      break;\n    case LifecycleHooks.AfterViewInit:\n      nodeFlag = NodeFlags.AfterViewInit;\n      break;\n    case LifecycleHooks.DoCheck:\n      nodeFlag = NodeFlags.DoCheck;\n      break;\n    case LifecycleHooks.OnChanges:\n      nodeFlag = NodeFlags.OnChanges;\n      break;\n    case LifecycleHooks.OnDestroy:\n      nodeFlag = NodeFlags.OnDestroy;\n      break;\n    case LifecycleHooks.OnInit:\n      nodeFlag = NodeFlags.OnInit;\n      break;\n  }\n  return nodeFlag;\n}\n\nexport function componentFactoryResolverProviderDef(\n    reflector: CompileReflector, ctx: OutputContext, flags: NodeFlags,\n    entryComponents: CompileEntryComponentMetadata[]): {\n  providerExpr: o.Expression,\n  flags: NodeFlags,\n  depsExpr: o.Expression,\n  tokenExpr: o.Expression\n} {\n  const entryComponentFactories =\n      entryComponents.map((entryComponent) => ctx.importExpr(entryComponent.componentFactory));\n  const token = createTokenForExternalReference(reflector, Identifiers.ComponentFactoryResolver);\n  const classMeta = {\n    diDeps: [\n      {isValue: true, value: o.literalArr(entryComponentFactories)},\n      {token: token, isSkipSelf: true, isOptional: true},\n      {token: createTokenForExternalReference(reflector, Identifiers.NgModuleRef)},\n    ],\n    lifecycleHooks: [],\n    reference: reflector.resolveExternalReference(Identifiers.CodegenComponentFactoryResolver)\n  };\n  const {providerExpr, flags: providerFlags, depsExpr} =\n      singleProviderDef(ctx, flags, ProviderAstType.PrivateService, {\n        token,\n        multi: false,\n        useClass: classMeta,\n      });\n  return {providerExpr, flags: providerFlags, depsExpr, tokenExpr: tokenExpr(ctx, token)};\n}\n"]}