File size: 5,501 Bytes
064bfd6 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 | import type { ToolUseBlock } from '@anthropic-ai/sdk/resources/index.mjs'
import type { CanUseToolFn } from '../../hooks/useCanUseTool.js'
import { findToolByName, type ToolUseContext } from '../../Tool.js'
import type { AssistantMessage, Message } from '../../types/message.js'
import { all } from '../../utils/generators.js'
import { type MessageUpdateLazy, runToolUse } from './toolExecution.js'
function getMaxToolUseConcurrency(): number {
return (
parseInt(process.env.CLAUDE_CODE_MAX_TOOL_USE_CONCURRENCY || '', 10) || 10
)
}
export type MessageUpdate = {
message?: Message
newContext: ToolUseContext
}
export async function* runTools(
toolUseMessages: ToolUseBlock[],
assistantMessages: AssistantMessage[],
canUseTool: CanUseToolFn,
toolUseContext: ToolUseContext,
): AsyncGenerator<MessageUpdate, void> {
let currentContext = toolUseContext
for (const { isConcurrencySafe, blocks } of partitionToolCalls(
toolUseMessages,
currentContext,
)) {
if (isConcurrencySafe) {
const queuedContextModifiers: Record<
string,
((context: ToolUseContext) => ToolUseContext)[]
> = {}
// Run read-only batch concurrently
for await (const update of runToolsConcurrently(
blocks,
assistantMessages,
canUseTool,
currentContext,
)) {
if (update.contextModifier) {
const { toolUseID, modifyContext } = update.contextModifier
if (!queuedContextModifiers[toolUseID]) {
queuedContextModifiers[toolUseID] = []
}
queuedContextModifiers[toolUseID].push(modifyContext)
}
yield {
message: update.message,
newContext: currentContext,
}
}
for (const block of blocks) {
const modifiers = queuedContextModifiers[block.id]
if (!modifiers) {
continue
}
for (const modifier of modifiers) {
currentContext = modifier(currentContext)
}
}
yield { newContext: currentContext }
} else {
// Run non-read-only batch serially
for await (const update of runToolsSerially(
blocks,
assistantMessages,
canUseTool,
currentContext,
)) {
if (update.newContext) {
currentContext = update.newContext
}
yield {
message: update.message,
newContext: currentContext,
}
}
}
}
}
type Batch = { isConcurrencySafe: boolean; blocks: ToolUseBlock[] }
/**
* Partition tool calls into batches where each batch is either:
* 1. A single non-read-only tool, or
* 2. Multiple consecutive read-only tools
*/
function partitionToolCalls(
toolUseMessages: ToolUseBlock[],
toolUseContext: ToolUseContext,
): Batch[] {
return toolUseMessages.reduce((acc: Batch[], toolUse) => {
const tool = findToolByName(toolUseContext.options.tools, toolUse.name)
const parsedInput = tool?.inputSchema.safeParse(toolUse.input)
const isConcurrencySafe = parsedInput?.success
? (() => {
try {
return Boolean(tool?.isConcurrencySafe(parsedInput.data))
} catch {
// If isConcurrencySafe throws (e.g., due to shell-quote parse failure),
// treat as not concurrency-safe to be conservative
return false
}
})()
: false
if (isConcurrencySafe && acc[acc.length - 1]?.isConcurrencySafe) {
acc[acc.length - 1]!.blocks.push(toolUse)
} else {
acc.push({ isConcurrencySafe, blocks: [toolUse] })
}
return acc
}, [])
}
async function* runToolsSerially(
toolUseMessages: ToolUseBlock[],
assistantMessages: AssistantMessage[],
canUseTool: CanUseToolFn,
toolUseContext: ToolUseContext,
): AsyncGenerator<MessageUpdate, void> {
let currentContext = toolUseContext
for (const toolUse of toolUseMessages) {
toolUseContext.setInProgressToolUseIDs(prev =>
new Set(prev).add(toolUse.id),
)
for await (const update of runToolUse(
toolUse,
assistantMessages.find(_ =>
_.message.content.some(
_ => _.type === 'tool_use' && _.id === toolUse.id,
),
)!,
canUseTool,
currentContext,
)) {
if (update.contextModifier) {
currentContext = update.contextModifier.modifyContext(currentContext)
}
yield {
message: update.message,
newContext: currentContext,
}
}
markToolUseAsComplete(toolUseContext, toolUse.id)
}
}
async function* runToolsConcurrently(
toolUseMessages: ToolUseBlock[],
assistantMessages: AssistantMessage[],
canUseTool: CanUseToolFn,
toolUseContext: ToolUseContext,
): AsyncGenerator<MessageUpdateLazy, void> {
yield* all(
toolUseMessages.map(async function* (toolUse) {
toolUseContext.setInProgressToolUseIDs(prev =>
new Set(prev).add(toolUse.id),
)
yield* runToolUse(
toolUse,
assistantMessages.find(_ =>
_.message.content.some(
_ => _.type === 'tool_use' && _.id === toolUse.id,
),
)!,
canUseTool,
toolUseContext,
)
markToolUseAsComplete(toolUseContext, toolUse.id)
}),
getMaxToolUseConcurrency(),
)
}
function markToolUseAsComplete(
toolUseContext: ToolUseContext,
toolUseID: string,
) {
toolUseContext.setInProgressToolUseIDs(prev => {
const next = new Set(prev)
next.delete(toolUseID)
return next
})
}
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