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RestElement.ts
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RestElement.ts
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import { ExecutionPathOptions } from '../ExecutionPathOptions';
import { EMPTY_PATH, ObjectPath, UNKNOWN_EXPRESSION, UNKNOWN_KEY } from '../values';
import Variable from '../variables/Variable';
import * as NodeType from './NodeType';
import { ExpressionEntity } from './shared/Expression';
import { NodeBase } from './shared/Node';
import { PatternNode } from './shared/Pattern';
export default class RestElement extends NodeBase implements PatternNode {
type: NodeType.tRestElement;
argument: PatternNode;
private declarationInit: ExpressionEntity | null = null;
addExportedVariables(variables: Variable[]): void {
this.argument.addExportedVariables(variables);
}
bind() {
super.bind();
if (this.declarationInit !== null) {
this.declarationInit.deoptimizePath([UNKNOWN_KEY, UNKNOWN_KEY]);
}
}
declare(kind: string, init: ExpressionEntity) {
this.argument.declare(kind, UNKNOWN_EXPRESSION);
this.declarationInit = init;
}
hasEffectsWhenAssignedAtPath(path: ObjectPath, options: ExecutionPathOptions): boolean {
return path.length > 0 || this.argument.hasEffectsWhenAssignedAtPath(EMPTY_PATH, options);
}
deoptimizePath(path: ObjectPath) {
path.length === 0 && this.argument.deoptimizePath(EMPTY_PATH);
}
}