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refactor(compiler): remove view.rootNodes and view.projectableNodes

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They are replaced by generated visitor functions `view.visitRootNodes` / `view.visitProjectableNodes`.
This commit is contained in:
Tobias Bosch
2016-10-31 14:41:16 -07:00
committed by vsavkin
parent b3e3cd3add
commit bda1909ede
13 changed files with 193 additions and 171 deletions
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129
modules/@angular/compiler/src/view_compiler/view_builder.ts
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@ -15,14 +15,15 @@ import {isPresent} from '../facade/lang';
import {Identifiers, identifierToken, resolveIdentifier} from '../identifiers';
import {createClassStmt} from '../output/class_builder';
import * as o from '../output/output_ast';
import {ParseSourceSpan} from '../parse_util';
import {ChangeDetectorStatus, ViewType, isDefaultChangeDetectionStrategy} from '../private_import_core';
import {AttrAst, BoundDirectivePropertyAst, BoundElementPropertyAst, BoundEventAst, BoundTextAst, DirectiveAst, ElementAst, EmbeddedTemplateAst, NgContentAst, ReferenceAst, TemplateAst, TemplateAstVisitor, TextAst, VariableAst, templateVisitAll} from '../template_parser/template_ast';
import {CompileElement, CompileNode} from './compile_element';
import {CompileView} from './compile_view';
import {CompileView, CompileViewRootNode, CompileViewRootNodeType} from './compile_view';
import {ChangeDetectorStatusEnum, DetectChangesVars, InjectMethodVars, ViewConstructorVars, ViewEncapsulationEnum, ViewProperties, ViewTypeEnum} from './constants';
import {ComponentFactoryDependency, DirectiveWrapperDependency, ViewFactoryDependency} from './deps';
import {createFlatArray, getViewFactoryName} from './util';
import {getViewFactoryName} from './util';
const IMPLICIT_TEMPLATE_VAR = '\$implicit';
const CLASS_ATTR = 'class';
@ -38,9 +39,12 @@ export function buildView(
Array<ViewFactoryDependency|ComponentFactoryDependency|DirectiveWrapperDependency>):
number {
var builderVisitor = new ViewBuilderVisitor(view, targetDependencies);
templateVisitAll(
builderVisitor, template,
view.declarationElement.isNull() ? view.declarationElement : view.declarationElement.parent);
const parentEl =
view.declarationElement.isNull() ? view.declarationElement : view.declarationElement.parent;
templateVisitAll(builderVisitor, template, parentEl);
if (view.viewType === ViewType.EMBEDDED) {
view.lastRenderNode = builderVisitor.getOrCreateLastRenderNode();
}
return builderVisitor.nestedViewCount;
}
@ -73,10 +77,16 @@ class ViewBuilderVisitor implements TemplateAstVisitor {
if (this._isRootNode(parent)) {
// store appElement as root node only for ViewContainers
if (this.view.viewType !== ViewType.COMPONENT) {
this.view.rootNodesOrAppElements.push(vcAppEl || node.renderNode);
this.view.rootNodes.push(new CompileViewRootNode(
vcAppEl ? CompileViewRootNodeType.ViewContainer : CompileViewRootNodeType.Node,
vcAppEl || node.renderNode));
}
} else if (isPresent(parent.component) && isPresent(ngContentIndex)) {
parent.addContentNode(ngContentIndex, vcAppEl || node.renderNode);
parent.addContentNode(
ngContentIndex,
new CompileViewRootNode(
vcAppEl ? CompileViewRootNodeType.ViewContainer : CompileViewRootNodeType.Node,
vcAppEl || node.renderNode));
}
}
@ -97,6 +107,23 @@ class ViewBuilderVisitor implements TemplateAstVisitor {
}
}
getOrCreateLastRenderNode(): o.Expression {
const view = this.view;
if (view.rootNodes.length === 0 ||
view.rootNodes[view.rootNodes.length - 1].type !== CompileViewRootNodeType.Node) {
var fieldName = `_el_${view.nodes.length}`;
view.fields.push(
new o.ClassField(fieldName, o.importType(view.genConfig.renderTypes.renderElement)));
view.createMethod.addStmt(o.THIS_EXPR.prop(fieldName)
.set(ViewProperties.renderer.callMethod(
'createTemplateAnchor', [o.NULL_EXPR, o.NULL_EXPR]))
.toStmt());
view.rootNodes.push(
new CompileViewRootNode(CompileViewRootNodeType.Node, o.THIS_EXPR.prop(fieldName)))
}
return view.rootNodes[view.rootNodes.length - 1].expr;
}
visitBoundText(ast: BoundTextAst, parent: CompileElement): any {
return this._visitText(ast, '', parent);
}
@ -129,9 +156,6 @@ class ViewBuilderVisitor implements TemplateAstVisitor {
// have debug information for them...
this.view.createMethod.resetDebugInfo(null, ast);
var parentRenderNode = this._getParentRenderNode(parent);
var nodesExpression = ViewProperties.projectableNodes.key(
o.literal(ast.index),
new o.ArrayType(o.importType(this.view.genConfig.renderTypes.renderNode)));
if (parentRenderNode !== o.NULL_EXPR) {
this.view.createMethod.addStmt(
ViewProperties.renderer
@ -139,18 +163,20 @@ class ViewBuilderVisitor implements TemplateAstVisitor {
'projectNodes',
[
parentRenderNode,
o.importExpr(resolveIdentifier(Identifiers.flattenNestedViewRenderNodes))
.callFn([nodesExpression])
o.THIS_EXPR.callMethod('projectedNodes', [o.literal(ast.index)])
])
.toStmt());
} else if (this._isRootNode(parent)) {
if (this.view.viewType !== ViewType.COMPONENT) {
// store root nodes only for embedded/host views
this.view.rootNodesOrAppElements.push(nodesExpression);
this.view.rootNodes.push(
new CompileViewRootNode(CompileViewRootNodeType.NgContent, null, ast.index));
}
} else {
if (isPresent(parent.component) && isPresent(ast.ngContentIndex)) {
parent.addContentNode(ast.ngContentIndex, nodesExpression);
parent.addContentNode(
ast.ngContentIndex,
new CompileViewRootNode(CompileViewRootNodeType.NgContent, null, ast.index));
}
}
return null;
@ -220,18 +246,8 @@ class ViewBuilderVisitor implements TemplateAstVisitor {
compileElement.afterChildren(this.view.nodes.length - nodeIndex - 1);
if (isPresent(compViewExpr)) {
var codeGenContentNodes: o.Expression;
if (this.view.component.type.isHost) {
codeGenContentNodes = ViewProperties.projectableNodes;
} else {
codeGenContentNodes = o.literalArr(
compileElement.contentNodesByNgContentIndex.map(nodes => createFlatArray(nodes)));
}
this.view.createMethod.addStmt(
compViewExpr
.callMethod(
'create', [compileElement.getComponent(), codeGenContentNodes, o.NULL_EXPR])
.toStmt());
compViewExpr.callMethod('create', [compileElement.getComponent(), o.NULL_EXPR]).toStmt());
}
return null;
}
@ -457,7 +473,8 @@ function createViewClass(
generateDetectChangesMethod(view)),
new o.ClassMethod('dirtyParentQueriesInternal', [], view.dirtyParentQueriesMethod.finish()),
new o.ClassMethod('destroyInternal', [], generateDestroyMethod(view)),
new o.ClassMethod('detachInternal', [], view.detachMethod.finish())
new o.ClassMethod('detachInternal', [], view.detachMethod.finish()),
generateVisitRootNodesMethod(view), generateVisitProjectableNodesMethod(view)
].filter((method) => method.body.length > 0);
var superClass = view.genConfig.genDebugInfo ? Identifiers.DebugAppView : Identifiers.AppView;
@ -554,7 +571,7 @@ function generateCreateMethod(view: CompileView): o.Statement[] {
.callMethod(
'init',
[
createFlatArray(view.rootNodesOrAppElements),
view.lastRenderNode,
o.literalArr(view.nodes.map(node => node.renderNode)),
o.literalArr(view.disposables),
])
@ -634,3 +651,61 @@ function getChangeDetectionMode(view: CompileView): ChangeDetectorStatus {
}
return mode;
}
function generateVisitRootNodesMethod(view: CompileView): o.ClassMethod {
const cbVar = o.variable('cb');
const ctxVar = o.variable('ctx');
const stmts: o.Statement[] = generateVisitNodesStmts(view.rootNodes, cbVar, ctxVar);
return new o.ClassMethod(
'visitRootNodesInternal',
[new o.FnParam(cbVar.name, o.DYNAMIC_TYPE), new o.FnParam(ctxVar.name, o.DYNAMIC_TYPE)],
stmts);
}
function generateVisitProjectableNodesMethod(view: CompileView): o.ClassMethod {
const nodeIndexVar = o.variable('nodeIndex');
const ngContentIndexVar = o.variable('ngContentIndex');
const cbVar = o.variable('cb');
const ctxVar = o.variable('ctx');
const stmts: o.Statement[] = [];
view.nodes.forEach((node) => {
if (node instanceof CompileElement && node.component) {
node.contentNodesByNgContentIndex.forEach((projectedNodes, ngContentIndex) => {
stmts.push(new o.IfStmt(
nodeIndexVar.equals(o.literal(node.nodeIndex))
.and(ngContentIndexVar.equals(o.literal(ngContentIndex))),
generateVisitNodesStmts(projectedNodes, cbVar, ctxVar)));
});
}
});
return new o.ClassMethod(
'visitProjectableNodesInternal',
[
new o.FnParam(nodeIndexVar.name, o.NUMBER_TYPE),
new o.FnParam(ngContentIndexVar.name, o.NUMBER_TYPE),
new o.FnParam(cbVar.name, o.DYNAMIC_TYPE), new o.FnParam(ctxVar.name, o.DYNAMIC_TYPE)
],
stmts);
}
function generateVisitNodesStmts(
nodes: CompileViewRootNode[], cb: o.Expression, ctx: o.Expression): o.Statement[] {
const stmts: o.Statement[] = [];
nodes.forEach((node) => {
switch (node.type) {
case CompileViewRootNodeType.Node:
stmts.push(cb.callFn([node.expr, ctx]).toStmt());
break;
case CompileViewRootNodeType.ViewContainer:
stmts.push(cb.callFn([node.expr.prop('nativeElement'), ctx]).toStmt());
stmts.push(node.expr.callMethod('visitNestedViewRootNodes', [cb, ctx]).toStmt());
break;
case CompileViewRootNodeType.NgContent:
stmts.push(
o.THIS_EXPR.callMethod('visitProjectedNodes', [o.literal(node.ngContentIndex), cb, ctx])
.toStmt());
break;
}
});
return stmts;
}