Method write

javascript/packages/core/lib/gen/decimal.ts:36–55

(accessor: string)

  }

  write(accessor: string): string {
    const codec = this.builder.getExternal(DecimalCodec.name);
    const scale = this.scope.uniqueName("decimal_scale");
    const unscaled = this.scope.uniqueName("decimal_unscaled");
    const magnitudeBytes = this.scope.uniqueName("decimal_magnitude_bytes");
    const meta = this.scope.uniqueName("decimal_meta");
    return `
      const ${scale} = ${accessor}.scale;
      const ${unscaled} = ${accessor}.unscaledValue;
      ${this.builder.writer.writeVarInt32(scale)}
      if (${codec}.canUseSmallEncoding(${unscaled})) {
        ${this.builder.writer.writeVarUInt64(`(${codec}.encodeZigZag64(${unscaled}) << 1n)`)}
      } else {
        const ${magnitudeBytes} = ${codec}.toCanonicalLittleEndianMagnitude(${unscaled});
        const ${meta} = (BigInt(${magnitudeBytes}.length) << 1n) | (${unscaled} < 0n ? 1n : 0n);
        ${this.builder.writer.writeVarUInt64(`((${meta} << 1n) | 1n)`)}
        ${this.builder.writer.buffer(magnitudeBytes)}
      }
    `;
  }

  read(accessor: (expr: string) => string): string {
    const codec = this.builder.getExternal(DecimalCodec.name);