@neo-one/smart-contract-compiler-esnext-esm/compile/helper/types/IsNullOrUndefinedHelper.js

NEO•ONE TypeScript smart contract compiler.

import { TypedHelper } from './TypedHelper';
export class IsNullOrUndefinedHelper extends TypedHelper {
    emit(sb, node, options) {
        if (!options.pushValue) {
            sb.emitOp(node, 'DROP');
            return;
        }
        const pushFalse = () => {
            sb.emitOp(node, 'DROP');
            sb.emitPushBoolean(node, false);
        };
        const pushTrue = () => {
            sb.emitOp(node, 'DROP');
            sb.emitPushBoolean(node, true);
        };
        sb.emitHelper(node, options, sb.helpers.forBuiltinType({
            type: this.type,
            knownType: this.knownType,
            array: pushFalse,
            arrayStorage: pushFalse,
            boolean: pushFalse,
            buffer: pushFalse,
            null: pushTrue,
            number: pushFalse,
            object: pushFalse,
            string: pushFalse,
            symbol: pushFalse,
            undefined: pushTrue,
            map: pushFalse,
            mapStorage: pushFalse,
            set: pushFalse,
            setStorage: pushFalse,
            error: pushFalse,
            forwardValue: pushFalse,
            iteratorResult: pushFalse,
            iterable: pushFalse,
            iterableIterator: pushFalse,
            transaction: pushFalse,
            output: pushFalse,
            attribute: pushFalse,
            input: pushFalse,
            account: pushFalse,
            asset: pushFalse,
            contract: pushFalse,
            header: pushFalse,
            block: pushFalse,
        }));
    }
}

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