@neo-one/smart-contract-compiler
Version:
NEO•ONE TypeScript smart contract compiler.
43 lines (41 loc) • 1.69 kB
JavaScript
import { IterableIteratorSlots, IteratorResultSlots } from '../../constants';
import { Helper } from '../Helper';
export class IterableIteratorForEachHelper extends Helper {
constructor(options) {
super();
this.each = options.each;
}
emit(sb, node, optionsIn) {
const options = sb.pushValueOptions(optionsIn);
sb.emitHelper(node, options, sb.helpers.unwrapIterableIterator);
sb.emitPushInt(node, IterableIteratorSlots.next);
sb.emitOp(node, 'PICKITEM');
sb.emitPushInt(node, 0);
sb.emitOp(node, 'NEWARRAY');
sb.emitHelper(node, options, sb.helpers.forLoop({
condition: () => {
sb.emitOp(node, 'OVER');
sb.emitHelper(node, options, sb.helpers.call);
sb.emitHelper(node, options, sb.helpers.unwrapIteratorResult);
sb.emitOp(node, 'DUP');
sb.emitPushInt(node, IteratorResultSlots.done);
sb.emitOp(node, 'PICKITEM');
sb.emitHelper(node, options, sb.helpers.unwrapBoolean);
sb.emitOp(node, 'NOT');
},
each: (innerOptions) => {
sb.emitPushInt(node, IteratorResultSlots.value);
sb.emitOp(node, 'PICKITEM');
sb.emitPushInt(node, 0);
sb.emitOp(node, 'NEWARRAY');
sb.emitOp(node, 'SWAP');
this.each(sb.noPushValueOptions(innerOptions));
},
cleanup: () => {
sb.emitOp(node, 'DROP');
sb.emitOp(node, 'DROP');
},
}));
}
}
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