src: move ParseArrayIndex() to src/node_buffer.cc

src: move ParseArrayIndex() to src/node_buffer.cc · nodejs/node@6ae2043

Original file line number	Diff line number	Diff line change
`@@ -193,6 +193,25 @@ void CallbackInfo::WeakCallback(Isolate* isolate) {`
`193`	`193`	`}`
`194`	`194`
`195`	`195`
	`196`	`+// Parse index for external array data.`
	`197`	`+inline MUST_USE_RESULT bool ParseArrayIndex(Local<Value> arg,`
	`198`	`+size_t def,`
	`199`	`+size_t* ret) {`
	`200`	`+if (arg->IsUndefined()) {`
	`201`	`+ *ret = def;`
	`202`	`+return true;`
	`203`	`+ }`
	`204`	`+`
	`205`	`+int64_t tmp_i = arg->IntegerValue();`
	`206`	`+`
	`207`	`+if (tmp_i < 0)`
	`208`	`+return false;`
	`209`	`+`
	`210`	`+ *ret = static_cast<size_t>(tmp_i);`
	`211`	`+return true;`
	`212`	`+}`
	`213`	`+`
	`214`	`+`
`196`	`215`	`// Buffer methods`
`197`	`216`
`198`	`217`	`bool HasInstance(Local<Value> val) {`