Function getThrowFunction

src/code-gen/functions.ts:239–261

(error: AbiError, context: FileContext)

}

export function getThrowFunction(error: AbiError, context: FileContext): ArrayJoinInput<string> {
  const signature = `${error.name}(${error.fields.map(f => toTypeName(f.type)).join(',')})`;
  const selector = `0x${keccak256(signature).slice(0, 4).toString('hex')}`.padEnd(66, '0');
  let offset = 4;
  const selectorReference = context.addConstant(`${error.name}_selector`, selector);
  const lines: string[] = [
    `mstore(0, ${selectorReference})`
  ];
  for (let field of error.fields) {
    const offsetRef = context.addConstant(`${error.name}_${field.name}_ptr`, toHex(offset));
    lines.push(`mstore(${offsetRef}, ${field.name})`);
    offset += 32;
  }
  const lengthReference = context.addConstant(`${error.name}_length`, toHex(offset))
  lines.push(`revert(0, ${lengthReference})`)
  const fnBlock = buildFunctionBlock(
    `throw${error.name}`,
    error.fields.map((field) => `${toTypeName(field.type)} ${field.name}`),
    [],
    buildAssemblyBlock(lines)
  );
  return fnBlock
}

export function getEmitFunction(event: AbiEvent, context: FileContext): ArrayJoinInput<string> {
  const topic0 = `0x${keccak256(`${event.name}(${event.fields.map(f => toTypeName(f.type)).join(',')})`).toString('hex')}`;