/
ForOfStatement.ts
54 lines (48 loc) · 1.79 KB
/
ForOfStatement.ts
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import MagicString from 'magic-string';
import { NO_SEMICOLON, RenderOptions } from '../../utils/renderHelpers';
import { InclusionContext } from '../ExecutionContext';
import BlockScope from '../scopes/BlockScope';
import Scope from '../scopes/Scope';
import { EMPTY_PATH } from '../utils/PathTracker';
import * as NodeType from './NodeType';
import { ExpressionNode, IncludeChildren, StatementBase, StatementNode } from './shared/Node';
import { PatternNode } from './shared/Pattern';
import VariableDeclaration from './VariableDeclaration';
export default class ForOfStatement extends StatementBase {
await!: boolean;
body!: StatementNode;
left!: VariableDeclaration | PatternNode;
right!: ExpressionNode;
type!: NodeType.tForOfStatement;
bind() {
this.left.bind();
this.left.deoptimizePath(EMPTY_PATH);
this.right.bind();
this.body.bind();
}
createScope(parentScope: Scope) {
this.scope = new BlockScope(parentScope);
}
hasEffects(): boolean {
// Placeholder until proper Symbol.Iterator support
return true;
}
include(context: InclusionContext, includeChildrenRecursively: IncludeChildren) {
this.included = true;
this.left.include(context, includeChildrenRecursively || true);
this.left.deoptimizePath(EMPTY_PATH);
this.right.include(context, includeChildrenRecursively);
const { brokenFlow } = context;
this.body.includeAsSingleStatement(context, includeChildrenRecursively);
context.brokenFlow = brokenFlow;
}
render(code: MagicString, options: RenderOptions) {
this.left.render(code, options, NO_SEMICOLON);
this.right.render(code, options, NO_SEMICOLON);
// handle no space between "of" and the right side
if (code.original.charCodeAt(this.right.start - 1) === 102 /* f */) {
code.prependLeft(this.right.start, ' ');
}
this.body.render(code, options);
}
}