Function getReadField

src/code-gen/fields.ts:275–303

(
  struct: AbiStruct,
  field: AbiStructField,
  offset: number,
  context: FileContext,
  maxValueReference: string
)

};

export const getReadField = (
  struct: AbiStruct,
  field: AbiStructField,
  offset: number,
  context: FileContext,
  maxValueReference: string
) => {
  if (field.type.meta !== "elementary" && field.type.meta !== 'enum') throw Error("Unsupported field!");
  const constantsPrefix = `${struct.name}_${field.name}`;
  const size = field.type.size;
  const bitsAfter = 256 - (offset + size);
  let rightAligned = "encoded";
  if (bitsAfter > 0) {
    const bitsAfterName = `${constantsPrefix}_bitsAfter`;
    const bitsAfterReference = context.addConstant(bitsAfterName, toHex(bitsAfter));
    rightAligned = `shr(${bitsAfterReference}, encoded)`;
  }
  if (field.type.meta === "elementary" && field.type.type === 'int') {
    const bytesLess1 = (field.type.size / 8) - 1;
    return `signextend(${toHex(bytesLess1)}, ${rightAligned})`
  }
  let masked = rightAligned;
  if (offset > 0) {
    // const maskName = `MaskOnlyLast${numberToPascalCaseWords(size / 8)}Bytes`;
    // const maskReference = context.addConstant(maskName, getInclusionMask(size));
    masked = `and(${maxValueReference}, ${rightAligned})`;
  }
  return masked;
};