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Golang Builder.PrependUint64方法代碼示例

本文整理匯總了Golang中github.com/google/flatbuffers/go.Builder.PrependUint64方法的典型用法代碼示例。如果您正苦於以下問題:Golang Builder.PrependUint64方法的具體用法?Golang Builder.PrependUint64怎麽用?Golang Builder.PrependUint64使用的例子?那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在github.com/google/flatbuffers/go.Builder的用法示例。


在下文中一共展示了Builder.PrependUint64方法的1個代碼示例,這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚,您的評價將有助於係統推薦出更棒的Golang代碼示例。

示例1: CheckByteLayout

// CheckByteLayout verifies the bytes of a Builder in various scenarios.
func CheckByteLayout(fail func(string, ...interface{})) {
	var b *flatbuffers.Builder

	var i int
	check := func(want []byte) {
		i++
		got := b.Bytes[b.Head():]
		if !bytes.Equal(want, got) {
			fail("case %d: want\n%v\nbut got\n%v\n", i, want, got)
		}
	}

	// test 1: numbers

	b = flatbuffers.NewBuilder(0)
	check([]byte{})
	b.PrependBool(true)
	check([]byte{1})
	b.PrependInt8(-127)
	check([]byte{129, 1})
	b.PrependUint8(255)
	check([]byte{255, 129, 1})
	b.PrependInt16(-32222)
	check([]byte{0x22, 0x82, 0, 255, 129, 1}) // first pad
	b.PrependUint16(0xFEEE)
	check([]byte{0xEE, 0xFE, 0x22, 0x82, 0, 255, 129, 1}) // no pad this time
	b.PrependInt32(-53687092)
	check([]byte{204, 204, 204, 252, 0xEE, 0xFE, 0x22, 0x82, 0, 255, 129, 1})
	b.PrependUint32(0x98765432)
	check([]byte{0x32, 0x54, 0x76, 0x98, 204, 204, 204, 252, 0xEE, 0xFE, 0x22, 0x82, 0, 255, 129, 1})

	// test 1b: numbers 2

	b = flatbuffers.NewBuilder(0)
	b.PrependUint64(0x1122334455667788)
	check([]byte{0x88, 0x77, 0x66, 0x55, 0x44, 0x33, 0x22, 0x11})

	// test 2: 1xbyte vector

	b = flatbuffers.NewBuilder(0)
	check([]byte{})
	b.StartVector(flatbuffers.SizeByte, 1, 1)
	check([]byte{0, 0, 0}) // align to 4bytes
	b.PrependByte(1)
	check([]byte{1, 0, 0, 0})
	b.EndVector(1)
	check([]byte{1, 0, 0, 0, 1, 0, 0, 0}) // padding

	// test 3: 2xbyte vector

	b = flatbuffers.NewBuilder(0)
	b.StartVector(flatbuffers.SizeByte, 2, 1)
	check([]byte{0, 0}) // align to 4bytes
	b.PrependByte(1)
	check([]byte{1, 0, 0})
	b.PrependByte(2)
	check([]byte{2, 1, 0, 0})
	b.EndVector(2)
	check([]byte{2, 0, 0, 0, 2, 1, 0, 0}) // padding

	// test 3b: 11xbyte vector matches builder size

	b = flatbuffers.NewBuilder(12)
	b.StartVector(flatbuffers.SizeByte, 8, 1)
	start := []byte{}
	check(start)
	for i := 1; i < 12; i++ {
		b.PrependByte(byte(i))
		start = append([]byte{byte(i)}, start...)
		check(start)
	}
	b.EndVector(8)
	check(append([]byte{8, 0, 0, 0}, start...))

	// test 4: 1xuint16 vector

	b = flatbuffers.NewBuilder(0)
	b.StartVector(flatbuffers.SizeUint16, 1, 1)
	check([]byte{0, 0}) // align to 4bytes
	b.PrependUint16(1)
	check([]byte{1, 0, 0, 0})
	b.EndVector(1)
	check([]byte{1, 0, 0, 0, 1, 0, 0, 0}) // padding

	// test 5: 2xuint16 vector

	b = flatbuffers.NewBuilder(0)
	b.StartVector(flatbuffers.SizeUint16, 2, 1)
	check([]byte{}) // align to 4bytes
	b.PrependUint16(0xABCD)
	check([]byte{0xCD, 0xAB})
	b.PrependUint16(0xDCBA)
	check([]byte{0xBA, 0xDC, 0xCD, 0xAB})
	b.EndVector(2)
	check([]byte{2, 0, 0, 0, 0xBA, 0xDC, 0xCD, 0xAB})

	// test 6: CreateString

	b = flatbuffers.NewBuilder(0)
//.........這裏部分代碼省略.........
開發者ID:bunnyblue,項目名稱:flatbuffers,代碼行數:101,代碼來源:go_test.go


注:本文中的github.com/google/flatbuffers/go.Builder.PrependUint64方法示例由純淨天空整理自Github/MSDocs等開源代碼及文檔管理平台,相關代碼片段篩選自各路編程大神貢獻的開源項目,源碼版權歸原作者所有,傳播和使用請參考對應項目的License;未經允許,請勿轉載。