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refactor(compiler): generate less code for bindings to DOM elements

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Detailed changes:
- remove `UNINITIALIZED`, initialize change detection fields with `undefined`.
  * we use `view.numberOfChecks === 0` now everywhere
    as indicator whether we are in the first change detection cycle
    (previously we used this only in a couple of places).
  * we keep the initialization itself as change detection get slower without it.
- remove passing around `throwOnChange` in various generated calls,
  and store it on the view as property instead.
- change generated code for bindings to DOM elements as follows:
  Before:
  ```
  var currVal_10 = self.context.bgColor;
  if (jit_checkBinding15(self.throwOnChange,self._expr_10,currVal_10)) {
    self.renderer.setElementStyle(self._el_0,'backgroundColor',((self.viewUtils.sanitizer.sanitize(jit_21,currVal_10) == null)? null: self.viewUtils.sanitizer.sanitize(jit_21,currVal_10).toString()));
    self._expr_10 = currVal_10;
  }
  var currVal_11 = jit_inlineInterpolate16(1,' ',self.context.data.value,' ');
  if (jit_checkBinding15(self.throwOnChange,self._expr_11,currVal_11)) {
    self.renderer.setText(self._text_1,currVal_11);
    self._expr_11 = currVal_11;
  }
  ```,
  After:
  ```
  var currVal_10 = self.context.bgColor;
  jit_checkRenderStyle14(self,self._el_0,'backgroundColor',null,self._expr_10,self._expr_10=currVal_10,false,jit_21);
  var currVal_11 = jit_inlineInterpolate15(1,' ',self.context.data.value,' ');
  jit_checkRenderText16(self,self._text_1,self._expr_11,self._expr_11=currVal_11,false);
  ```

Performance impact:
- None seen (checked against internal latency lab)

Part of #13651
This commit is contained in:
Tobias Bosch
2016-12-29 15:03:55 -08:00
committed by Igor Minar
parent 8ed92d75b0
commit db49d422f2
23 changed files with 346 additions and 286 deletions
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34
modules/@angular/compiler/src/identifiers.ts
View File

@ -10,7 +10,7 @@ import {ANALYZE_FOR_ENTRY_COMPONENTS, AnimationTransitionEvent, ChangeDetectionS
import {StaticSymbol} from './aot/static_symbol';
import {CompileIdentifierMetadata, CompileTokenMetadata, identifierModuleUrl, identifierName} from './compile_metadata';
import {AnimationGroupPlayer, AnimationKeyframe, AnimationSequencePlayer, AnimationStyles, AnimationTransition, AppView, ChangeDetectorStatus, CodegenComponentFactoryResolver, ComponentRef_, DebugAppView, DebugContext, NgModuleInjector, NoOpAnimationPlayer, StaticNodeDebugInfo, TemplateRef_, UNINITIALIZED, ValueUnwrapper, ViewContainer, ViewType, balanceAnimationKeyframes, clearStyles, collectAndResolveStyles, devModeEqual, prepareFinalAnimationStyles, reflector, registerModuleFactory, renderStyles, view_utils} from './private_import_core';
import {AnimationGroupPlayer, AnimationKeyframe, AnimationSequencePlayer, AnimationStyles, AnimationTransition, AppView, ChangeDetectorStatus, CodegenComponentFactoryResolver, ComponentRef_, DebugAppView, DebugContext, NgModuleInjector, NoOpAnimationPlayer, StaticNodeDebugInfo, TemplateRef_, ValueUnwrapper, ViewContainer, ViewType, balanceAnimationKeyframes, clearStyles, collectAndResolveStyles, devModeEqual, prepareFinalAnimationStyles, reflector, registerModuleFactory, renderStyles, view_utils} from './private_import_core';
const APP_VIEW_MODULE_URL = assetUrl('core', 'linker/view');
const VIEW_UTILS_MODULE_URL = assetUrl('core', 'linker/view_utils');
@ -161,8 +161,6 @@ export class Identifiers {
};
static SimpleChange:
IdentifierSpec = {name: 'SimpleChange', moduleUrl: CD_MODULE_URL, runtime: SimpleChange};
static UNINITIALIZED:
IdentifierSpec = {name: 'UNINITIALIZED', moduleUrl: CD_MODULE_URL, runtime: UNINITIALIZED};
static ChangeDetectorStatus: IdentifierSpec = {
name: 'ChangeDetectorStatus',
moduleUrl: CD_MODULE_URL,
@ -173,6 +171,36 @@ export class Identifiers {
moduleUrl: VIEW_UTILS_MODULE_URL,
runtime: view_utils.checkBinding
};
static checkBindingChange: IdentifierSpec = {
name: 'checkBindingChange',
moduleUrl: VIEW_UTILS_MODULE_URL,
runtime: view_utils.checkBindingChange
};
static checkRenderText: IdentifierSpec = {
name: 'checkRenderText',
moduleUrl: VIEW_UTILS_MODULE_URL,
runtime: view_utils.checkRenderText
};
static checkRenderProperty: IdentifierSpec = {
name: 'checkRenderProperty',
moduleUrl: VIEW_UTILS_MODULE_URL,
runtime: view_utils.checkRenderProperty
};
static checkRenderAttribute: IdentifierSpec = {
name: 'checkRenderAttribute',
moduleUrl: VIEW_UTILS_MODULE_URL,
runtime: view_utils.checkRenderAttribute
};
static checkRenderClass: IdentifierSpec = {
name: 'checkRenderClass',
moduleUrl: VIEW_UTILS_MODULE_URL,
runtime: view_utils.checkRenderClass
};
static checkRenderStyle: IdentifierSpec = {
name: 'checkRenderStyle',
moduleUrl: VIEW_UTILS_MODULE_URL,
runtime: view_utils.checkRenderStyle
};
static devModeEqual:
IdentifierSpec = {name: 'devModeEqual', moduleUrl: CD_MODULE_URL, runtime: devModeEqual};
static inlineInterpolate: IdentifierSpec = {