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perf(compiler): Avoid unnecessary List concats

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Update `BindingRecordsCreator#getBindingRecords` and `ProtoRecordBuilder#addAst`
to avoid unnecessary calls to `ListWrapper.concat`.

Closes #1905
This commit is contained in:
Tim Blasi
2015-05-14 10:26:19 -07:00
committed by Misko Hevery
parent 534cbb4bf5
commit 05a1c6c183
2 changed files with 49 additions and 54 deletions
Download Patch File Download Diff File Expand all files Collapse all files

56
modules/angular2/src/change_detection/proto_change_detector.ts
View File

@ -1,4 +1,4 @@
import {isPresent, isBlank, BaseException, Type, isString} from 'angular2/src/facade/lang';
import {BaseException, Type, isBlank, isPresent, isString} from 'angular2/src/facade/lang';
import {List, ListWrapper, MapWrapper, StringMapWrapper} from 'angular2/src/facade/collection';
import {
@ -109,37 +109,30 @@ class ProtoRecordBuilder {
constructor() { this.records = []; }
addAst(b: BindingRecord, variableNames: List < string >= null) {
var last = ListWrapper.last(this.records);
if (isPresent(last) && last.bindingRecord.directiveRecord == b.directiveRecord) {
last.lastInDirective = false;
var oldLast = ListWrapper.last(this.records);
if (isPresent(oldLast) && oldLast.bindingRecord.directiveRecord == b.directiveRecord) {
oldLast.lastInDirective = false;
}
var pr = _ConvertAstIntoProtoRecords.convert(b, this.records.length, variableNames);
if (!ListWrapper.isEmpty(pr)) {
var last = ListWrapper.last(pr);
last.lastInBinding = true;
last.lastInDirective = true;
this.records = ListWrapper.concat(this.records, pr);
_ConvertAstIntoProtoRecords.append(this.records, b, variableNames);
var newLast = ListWrapper.last(this.records);
if (isPresent(newLast) && newLast !== oldLast) {
newLast.lastInBinding = true;
newLast.lastInDirective = true;
}
}
}
class _ConvertAstIntoProtoRecords {
protoRecords: List<any>;
constructor(private _records: List<ProtoRecord>, private _bindingRecord: BindingRecord,
private _expressionAsString: string, private _variableNames: List<any>) {}
constructor(private bindingRecord: BindingRecord, private contextIndex: number,
private expressionAsString: string, private variableNames: List<any>) {
this.protoRecords = [];
}
static convert(b: BindingRecord, contextIndex: number, variableNames: List<any>) {
var c = new _ConvertAstIntoProtoRecords(b, contextIndex, b.ast.toString(), variableNames);
static append(records: List<ProtoRecord>, b: BindingRecord, variableNames: List<any>) {
var c = new _ConvertAstIntoProtoRecords(records, b, b.ast.toString(), variableNames);
b.ast.visit(c);
return c.protoRecords;
}
visitImplicitReceiver(ast: ImplicitReceiver) { return this.bindingRecord.implicitReceiver; }
visitImplicitReceiver(ast: ImplicitReceiver) { return this._bindingRecord.implicitReceiver; }
visitInterpolation(ast: Interpolation) {
var args = this._visitAll(ast.expressions);
@ -153,7 +146,7 @@ class _ConvertAstIntoProtoRecords {
visitAccessMember(ast: AccessMember) {
var receiver = ast.receiver.visit(this);
if (isPresent(this.variableNames) && ListWrapper.contains(this.variableNames, ast.name) &&
if (isPresent(this._variableNames) && ListWrapper.contains(this._variableNames, ast.name) &&
ast.receiver instanceof
ImplicitReceiver) {
return this._addRecord(RECORD_TYPE_LOCAL, ast.name, ast.name, [], null, receiver);
@ -163,10 +156,9 @@ class _ConvertAstIntoProtoRecords {
}
visitMethodCall(ast: MethodCall) {
;
var receiver = ast.receiver.visit(this);
var args = this._visitAll(ast.args);
if (isPresent(this.variableNames) && ListWrapper.contains(this.variableNames, ast.name)) {
if (isPresent(this._variableNames) && ListWrapper.contains(this._variableNames, ast.name)) {
var target = this._addRecord(RECORD_TYPE_LOCAL, ast.name, ast.name, [], null, receiver);
return this._addRecord(RECORD_TYPE_INVOKE_CLOSURE, "closure", null, args, null, target);
} else {
@ -236,17 +228,15 @@ class _ConvertAstIntoProtoRecords {
}
_addRecord(type, name, funcOrValue, args, fixedArgs, context) {
var selfIndex = ++this.contextIndex;
var selfIndex = this._records.length + 1;
if (context instanceof DirectiveIndex) {
ListWrapper.push(
this.protoRecords,
new ProtoRecord(type, name, funcOrValue, args, fixedArgs, -1, context, selfIndex,
this.bindingRecord, this.expressionAsString, false, false));
ListWrapper.push(this._records, new ProtoRecord(type, name, funcOrValue, args, fixedArgs, -1,
context, selfIndex, this._bindingRecord,
this._expressionAsString, false, false));
} else {
ListWrapper.push(
this.protoRecords,
new ProtoRecord(type, name, funcOrValue, args, fixedArgs, context, null, selfIndex,
this.bindingRecord, this.expressionAsString, false, false));
ListWrapper.push(this._records, new ProtoRecord(type, name, funcOrValue, args, fixedArgs,
context, null, selfIndex, this._bindingRecord,
this._expressionAsString, false, false));
}
return selfIndex;
}