Function parseLargeUsageBuffer

src/parser.ts:623–657

(source: Buffer, usageBounds: BufferJsonValueBounds | null)

}

function parseLargeUsageBuffer(source: Buffer, usageBounds: BufferJsonValueBounds | null) {
  const usage: AssistantMessageContent['usage'] = {
    input_tokens: readJsonNumberFieldBuffer(source, usageBounds, 'input_tokens') ?? 0,
    output_tokens: readJsonNumberFieldBuffer(source, usageBounds, 'output_tokens') ?? 0,
    cache_creation_input_tokens: readJsonNumberFieldBuffer(source, usageBounds, 'cache_creation_input_tokens'),
    cache_read_input_tokens: readJsonNumberFieldBuffer(source, usageBounds, 'cache_read_input_tokens'),
  }

  if (usageBounds?.kind === 'object') {
    const cacheCreation = findObjectFieldValueBuffer(source, usageBounds.start, usageBounds.end, 'cache_creation')
    const ephemeral5m = readJsonNumberFieldBuffer(source, cacheCreation, 'ephemeral_5m_input_tokens')
    const ephemeral1h = readJsonNumberFieldBuffer(source, cacheCreation, 'ephemeral_1h_input_tokens')
    if (ephemeral5m !== undefined || ephemeral1h !== undefined) {
      ;(usage as AssistantMessageContent['usage']).cache_creation = {
        ...(ephemeral5m !== undefined ? { ephemeral_5m_input_tokens: ephemeral5m } : {}),
        ...(ephemeral1h !== undefined ? { ephemeral_1h_input_tokens: ephemeral1h } : {}),
      }
    }

    const serverToolUse = findObjectFieldValueBuffer(source, usageBounds.start, usageBounds.end, 'server_tool_use')
    const webSearch = readJsonNumberFieldBuffer(source, serverToolUse, 'web_search_requests')
    const webFetch = readJsonNumberFieldBuffer(source, serverToolUse, 'web_fetch_requests')
    if (webSearch !== undefined || webFetch !== undefined) {
      ;(usage as AssistantMessageContent['usage']).server_tool_use = {
        ...(webSearch !== undefined ? { web_search_requests: webSearch } : {}),
        ...(webFetch !== undefined ? { web_fetch_requests: webFetch } : {}),
      }
    }

    const speed = readJsonStringBuffer(source, findObjectFieldValueBuffer(source, usageBounds.start, usageBounds.end, 'speed'))
    if (speed === 'standard' || speed === 'fast') usage.speed = speed
  }

  return usage
}

function extractLargeToolBlocksBuffer(source: Buffer, contentBounds: BufferJsonValueBounds | null): ToolUseBlock[] {
  if (!contentBounds || contentBounds.kind !== 'array') return []