c58b0ff787
Move more logic in our codegen into a shared util which is called by the Jit & Prege change detector code.
91 lines
2.9 KiB
TypeScript
91 lines
2.9 KiB
TypeScript
import {ListWrapper} from 'angular2/src/facade/collection';
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import {BaseException, Json} from 'angular2/src/facade/lang';
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import {CodegenNameUtil} from './codegen_name_util';
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import {codify, combineGeneratedStrings} from './codegen_facade';
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import {ProtoRecord, RecordType} from './proto_record';
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/**
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* Class responsible for providing change detection logic for chagne detector classes.
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*/
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export class CodegenLogicUtil {
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constructor(private _names: CodegenNameUtil, private _utilName: string) {}
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/**
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* Generates a statement which updates the local variable representing `protoRec` with the current
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* value of the record.
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*/
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genUpdateCurrentValue(protoRec: ProtoRecord): string {
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var context = (protoRec.contextIndex == -1) ?
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this._names.getDirectiveName(protoRec.directiveIndex) :
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this._names.getLocalName(protoRec.contextIndex);
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var argString =
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ListWrapper.map(protoRec.args, (arg) => this._names.getLocalName(arg)).join(", ");
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var rhs: string;
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switch (protoRec.mode) {
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case RecordType.SELF:
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rhs = context;
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break;
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case RecordType.CONST:
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rhs = codify(protoRec.funcOrValue);
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break;
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case RecordType.PROPERTY:
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rhs = `${context}.${protoRec.name}`;
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break;
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case RecordType.SAFE_PROPERTY:
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rhs = `${this._utilName}.isValueBlank(${context}) ? null : ${context}.${protoRec.name}`;
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break;
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case RecordType.LOCAL:
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rhs = `${this._names.getLocalsAccessorName()}.get('${protoRec.name}')`;
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break;
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case RecordType.INVOKE_METHOD:
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rhs = `${context}.${protoRec.name}(${argString})`;
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break;
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case RecordType.SAFE_INVOKE_METHOD:
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rhs =
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`${this._utilName}.isValueBlank(${context}) ? null : ${context}.${protoRec.name}(${argString})`;
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break;
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case RecordType.INVOKE_CLOSURE:
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rhs = `${context}(${argString})`;
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break;
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case RecordType.PRIMITIVE_OP:
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rhs = `${this._utilName}.${protoRec.name}(${argString})`;
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break;
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case RecordType.COLLECTION_LITERAL:
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rhs = `${this._utilName}.${protoRec.name}(${argString})`;
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break;
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case RecordType.INTERPOLATE:
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rhs = this._genInterpolation(protoRec);
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break;
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case RecordType.KEYED_ACCESS:
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rhs = `${context}[${this._names.getLocalName(protoRec.args[0])}]`;
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break;
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default:
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throw new BaseException(`Unknown operation ${protoRec.mode}`);
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}
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return `${this._names.getLocalName(protoRec.selfIndex)} = ${rhs};`;
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}
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_genInterpolation(protoRec: ProtoRecord): string {
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var iVals = [];
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for (var i = 0; i < protoRec.args.length; ++i) {
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iVals.push(codify(protoRec.fixedArgs[i]));
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iVals.push(`${this._utilName}.s(${this._names.getLocalName(protoRec.args[i])})`);
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}
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iVals.push(codify(protoRec.fixedArgs[protoRec.args.length]));
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return combineGeneratedStrings(iVals);
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}
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}
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