--- /dev/null
+// This file is generated with "go test -tags generate". DO NOT EDIT!
+// +build !generate
+
+package triegen_test
+
+// lookup returns the trie value for the first UTF-8 encoding in s and
+// the width in bytes of this encoding. The size will be 0 if s does not
+// hold enough bytes to complete the encoding. len(s) must be greater than 0.
+func (t *randTrie) lookup(s []byte) (v uint8, sz int) {
+ c0 := s[0]
+ switch {
+ case c0 < 0x80: // is ASCII
+ return randValues[c0], 1
+ case c0 < 0xC2:
+ return 0, 1 // Illegal UTF-8: not a starter, not ASCII.
+ case c0 < 0xE0: // 2-byte UTF-8
+ if len(s) < 2 {
+ return 0, 0
+ }
+ i := randIndex[c0]
+ c1 := s[1]
+ if c1 < 0x80 || 0xC0 <= c1 {
+ return 0, 1 // Illegal UTF-8: not a continuation byte.
+ }
+ return t.lookupValue(uint32(i), c1), 2
+ case c0 < 0xF0: // 3-byte UTF-8
+ if len(s) < 3 {
+ return 0, 0
+ }
+ i := randIndex[c0]
+ c1 := s[1]
+ if c1 < 0x80 || 0xC0 <= c1 {
+ return 0, 1 // Illegal UTF-8: not a continuation byte.
+ }
+ o := uint32(i)<<6 + uint32(c1)
+ i = randIndex[o]
+ c2 := s[2]
+ if c2 < 0x80 || 0xC0 <= c2 {
+ return 0, 2 // Illegal UTF-8: not a continuation byte.
+ }
+ return t.lookupValue(uint32(i), c2), 3
+ case c0 < 0xF8: // 4-byte UTF-8
+ if len(s) < 4 {
+ return 0, 0
+ }
+ i := randIndex[c0]
+ c1 := s[1]
+ if c1 < 0x80 || 0xC0 <= c1 {
+ return 0, 1 // Illegal UTF-8: not a continuation byte.
+ }
+ o := uint32(i)<<6 + uint32(c1)
+ i = randIndex[o]
+ c2 := s[2]
+ if c2 < 0x80 || 0xC0 <= c2 {
+ return 0, 2 // Illegal UTF-8: not a continuation byte.
+ }
+ o = uint32(i)<<6 + uint32(c2)
+ i = randIndex[o]
+ c3 := s[3]
+ if c3 < 0x80 || 0xC0 <= c3 {
+ return 0, 3 // Illegal UTF-8: not a continuation byte.
+ }
+ return t.lookupValue(uint32(i), c3), 4
+ }
+ // Illegal rune
+ return 0, 1
+}
+
+// lookupUnsafe returns the trie value for the first UTF-8 encoding in s.
+// s must start with a full and valid UTF-8 encoded rune.
+func (t *randTrie) lookupUnsafe(s []byte) uint8 {
+ c0 := s[0]
+ if c0 < 0x80 { // is ASCII
+ return randValues[c0]
+ }
+ i := randIndex[c0]
+ if c0 < 0xE0 { // 2-byte UTF-8
+ return t.lookupValue(uint32(i), s[1])
+ }
+ i = randIndex[uint32(i)<<6+uint32(s[1])]
+ if c0 < 0xF0 { // 3-byte UTF-8
+ return t.lookupValue(uint32(i), s[2])
+ }
+ i = randIndex[uint32(i)<<6+uint32(s[2])]
+ if c0 < 0xF8 { // 4-byte UTF-8
+ return t.lookupValue(uint32(i), s[3])
+ }
+ return 0
+}
+
+// lookupString returns the trie value for the first UTF-8 encoding in s and
+// the width in bytes of this encoding. The size will be 0 if s does not
+// hold enough bytes to complete the encoding. len(s) must be greater than 0.
+func (t *randTrie) lookupString(s string) (v uint8, sz int) {
+ c0 := s[0]
+ switch {
+ case c0 < 0x80: // is ASCII
+ return randValues[c0], 1
+ case c0 < 0xC2:
+ return 0, 1 // Illegal UTF-8: not a starter, not ASCII.
+ case c0 < 0xE0: // 2-byte UTF-8
+ if len(s) < 2 {
+ return 0, 0
+ }
+ i := randIndex[c0]
+ c1 := s[1]
+ if c1 < 0x80 || 0xC0 <= c1 {
+ return 0, 1 // Illegal UTF-8: not a continuation byte.
+ }
+ return t.lookupValue(uint32(i), c1), 2
+ case c0 < 0xF0: // 3-byte UTF-8
+ if len(s) < 3 {
+ return 0, 0
+ }
+ i := randIndex[c0]
+ c1 := s[1]
+ if c1 < 0x80 || 0xC0 <= c1 {
+ return 0, 1 // Illegal UTF-8: not a continuation byte.
+ }
+ o := uint32(i)<<6 + uint32(c1)
+ i = randIndex[o]
+ c2 := s[2]
+ if c2 < 0x80 || 0xC0 <= c2 {
+ return 0, 2 // Illegal UTF-8: not a continuation byte.
+ }
+ return t.lookupValue(uint32(i), c2), 3
+ case c0 < 0xF8: // 4-byte UTF-8
+ if len(s) < 4 {
+ return 0, 0
+ }
+ i := randIndex[c0]
+ c1 := s[1]
+ if c1 < 0x80 || 0xC0 <= c1 {
+ return 0, 1 // Illegal UTF-8: not a continuation byte.
+ }
+ o := uint32(i)<<6 + uint32(c1)
+ i = randIndex[o]
+ c2 := s[2]
+ if c2 < 0x80 || 0xC0 <= c2 {
+ return 0, 2 // Illegal UTF-8: not a continuation byte.
+ }
+ o = uint32(i)<<6 + uint32(c2)
+ i = randIndex[o]
+ c3 := s[3]
+ if c3 < 0x80 || 0xC0 <= c3 {
+ return 0, 3 // Illegal UTF-8: not a continuation byte.
+ }
+ return t.lookupValue(uint32(i), c3), 4
+ }
+ // Illegal rune
+ return 0, 1
+}
+
+// lookupStringUnsafe returns the trie value for the first UTF-8 encoding in s.
+// s must start with a full and valid UTF-8 encoded rune.
+func (t *randTrie) lookupStringUnsafe(s string) uint8 {
+ c0 := s[0]
+ if c0 < 0x80 { // is ASCII
+ return randValues[c0]
+ }
+ i := randIndex[c0]
+ if c0 < 0xE0 { // 2-byte UTF-8
+ return t.lookupValue(uint32(i), s[1])
+ }
+ i = randIndex[uint32(i)<<6+uint32(s[1])]
+ if c0 < 0xF0 { // 3-byte UTF-8
+ return t.lookupValue(uint32(i), s[2])
+ }
+ i = randIndex[uint32(i)<<6+uint32(s[2])]
+ if c0 < 0xF8 { // 4-byte UTF-8
+ return t.lookupValue(uint32(i), s[3])
+ }
+ return 0
+}
+
+// randTrie. Total size: 9280 bytes (9.06 KiB). Checksum: 6debd324a8debb8f.
+type randTrie struct{}
+
+func newRandTrie(i int) *randTrie {
+ return &randTrie{}
+}
+
+// lookupValue determines the type of block n and looks up the value for b.
+func (t *randTrie) lookupValue(n uint32, b byte) uint8 {
+ switch {
+ default:
+ return uint8(randValues[n<<6+uint32(b)])
+ }
+}
+
+// randValues: 56 blocks, 3584 entries, 3584 bytes
+// The third block is the zero block.
+var randValues = [3584]uint8{
+ // Block 0x0, offset 0x0
+ // Block 0x1, offset 0x40
+ // Block 0x2, offset 0x80
+ // Block 0x3, offset 0xc0
+ 0xc9: 0x0001,
+ // Block 0x4, offset 0x100
+ 0x100: 0x0001,
+ // Block 0x5, offset 0x140
+ 0x155: 0x0001,
+ // Block 0x6, offset 0x180
+ 0x196: 0x0001,
+ // Block 0x7, offset 0x1c0
+ 0x1ef: 0x0001,
+ // Block 0x8, offset 0x200
+ 0x206: 0x0001,
+ // Block 0x9, offset 0x240
+ 0x258: 0x0001,
+ // Block 0xa, offset 0x280
+ 0x288: 0x0001,
+ // Block 0xb, offset 0x2c0
+ 0x2f2: 0x0001,
+ // Block 0xc, offset 0x300
+ 0x304: 0x0001,
+ // Block 0xd, offset 0x340
+ 0x34b: 0x0001,
+ // Block 0xe, offset 0x380
+ 0x3ba: 0x0001,
+ // Block 0xf, offset 0x3c0
+ 0x3f5: 0x0001,
+ // Block 0x10, offset 0x400
+ 0x41d: 0x0001,
+ // Block 0x11, offset 0x440
+ 0x442: 0x0001,
+ // Block 0x12, offset 0x480
+ 0x4bb: 0x0001,
+ // Block 0x13, offset 0x4c0
+ 0x4e9: 0x0001,
+ // Block 0x14, offset 0x500
+ 0x53e: 0x0001,
+ // Block 0x15, offset 0x540
+ 0x55f: 0x0001,
+ // Block 0x16, offset 0x580
+ 0x5b7: 0x0001,
+ // Block 0x17, offset 0x5c0
+ 0x5d9: 0x0001,
+ // Block 0x18, offset 0x600
+ 0x60e: 0x0001,
+ // Block 0x19, offset 0x640
+ 0x652: 0x0001,
+ // Block 0x1a, offset 0x680
+ 0x68f: 0x0001,
+ // Block 0x1b, offset 0x6c0
+ 0x6dc: 0x0001,
+ // Block 0x1c, offset 0x700
+ 0x703: 0x0001,
+ // Block 0x1d, offset 0x740
+ 0x741: 0x0001,
+ // Block 0x1e, offset 0x780
+ 0x79b: 0x0001,
+ // Block 0x1f, offset 0x7c0
+ 0x7f1: 0x0001,
+ // Block 0x20, offset 0x800
+ 0x833: 0x0001,
+ // Block 0x21, offset 0x840
+ 0x853: 0x0001,
+ // Block 0x22, offset 0x880
+ 0x8a2: 0x0001,
+ // Block 0x23, offset 0x8c0
+ 0x8f8: 0x0001,
+ // Block 0x24, offset 0x900
+ 0x917: 0x0001,
+ // Block 0x25, offset 0x940
+ 0x945: 0x0001,
+ // Block 0x26, offset 0x980
+ 0x99e: 0x0001,
+ // Block 0x27, offset 0x9c0
+ 0x9fd: 0x0001,
+ // Block 0x28, offset 0xa00
+ 0xa0d: 0x0001,
+ // Block 0x29, offset 0xa40
+ 0xa66: 0x0001,
+ // Block 0x2a, offset 0xa80
+ 0xaab: 0x0001,
+ // Block 0x2b, offset 0xac0
+ 0xaea: 0x0001,
+ // Block 0x2c, offset 0xb00
+ 0xb2d: 0x0001,
+ // Block 0x2d, offset 0xb40
+ 0xb54: 0x0001,
+ // Block 0x2e, offset 0xb80
+ 0xb90: 0x0001,
+ // Block 0x2f, offset 0xbc0
+ 0xbe5: 0x0001,
+ // Block 0x30, offset 0xc00
+ 0xc28: 0x0001,
+ // Block 0x31, offset 0xc40
+ 0xc7c: 0x0001,
+ // Block 0x32, offset 0xc80
+ 0xcbf: 0x0001,
+ // Block 0x33, offset 0xcc0
+ 0xcc7: 0x0001,
+ // Block 0x34, offset 0xd00
+ 0xd34: 0x0001,
+ // Block 0x35, offset 0xd40
+ 0xd61: 0x0001,
+ // Block 0x36, offset 0xd80
+ 0xdb9: 0x0001,
+ // Block 0x37, offset 0xdc0
+ 0xdda: 0x0001,
+}
+
+// randIndex: 89 blocks, 5696 entries, 5696 bytes
+// Block 0 is the zero block.
+var randIndex = [5696]uint8{
+ // Block 0x0, offset 0x0
+ // Block 0x1, offset 0x40
+ // Block 0x2, offset 0x80
+ // Block 0x3, offset 0xc0
+ 0xe1: 0x02, 0xe3: 0x03, 0xe4: 0x04,
+ 0xea: 0x05, 0xeb: 0x06, 0xec: 0x07,
+ 0xf0: 0x10, 0xf1: 0x24, 0xf2: 0x3d, 0xf3: 0x4f, 0xf4: 0x56,
+ // Block 0x4, offset 0x100
+ 0x107: 0x01,
+ // Block 0x5, offset 0x140
+ 0x16c: 0x02,
+ // Block 0x6, offset 0x180
+ 0x19c: 0x03,
+ 0x1ae: 0x04,
+ // Block 0x7, offset 0x1c0
+ 0x1d8: 0x05,
+ 0x1f7: 0x06,
+ // Block 0x8, offset 0x200
+ 0x20c: 0x07,
+ // Block 0x9, offset 0x240
+ 0x24a: 0x08,
+ // Block 0xa, offset 0x280
+ 0x2b6: 0x09,
+ // Block 0xb, offset 0x2c0
+ 0x2d5: 0x0a,
+ // Block 0xc, offset 0x300
+ 0x31a: 0x0b,
+ // Block 0xd, offset 0x340
+ 0x373: 0x0c,
+ // Block 0xe, offset 0x380
+ 0x38b: 0x0d,
+ // Block 0xf, offset 0x3c0
+ 0x3f0: 0x0e,
+ // Block 0x10, offset 0x400
+ 0x433: 0x0f,
+ // Block 0x11, offset 0x440
+ 0x45d: 0x10,
+ // Block 0x12, offset 0x480
+ 0x491: 0x08, 0x494: 0x09, 0x497: 0x0a,
+ 0x49b: 0x0b, 0x49c: 0x0c,
+ 0x4a1: 0x0d,
+ 0x4ad: 0x0e,
+ 0x4ba: 0x0f,
+ // Block 0x13, offset 0x4c0
+ 0x4c1: 0x11,
+ // Block 0x14, offset 0x500
+ 0x531: 0x12,
+ // Block 0x15, offset 0x540
+ 0x546: 0x13,
+ // Block 0x16, offset 0x580
+ 0x5ab: 0x14,
+ // Block 0x17, offset 0x5c0
+ 0x5d4: 0x11,
+ 0x5fe: 0x11,
+ // Block 0x18, offset 0x600
+ 0x618: 0x0a,
+ // Block 0x19, offset 0x640
+ 0x65b: 0x15,
+ // Block 0x1a, offset 0x680
+ 0x6a0: 0x16,
+ // Block 0x1b, offset 0x6c0
+ 0x6d2: 0x17,
+ 0x6f6: 0x18,
+ // Block 0x1c, offset 0x700
+ 0x711: 0x19,
+ // Block 0x1d, offset 0x740
+ 0x768: 0x1a,
+ // Block 0x1e, offset 0x780
+ 0x783: 0x1b,
+ // Block 0x1f, offset 0x7c0
+ 0x7f9: 0x1c,
+ // Block 0x20, offset 0x800
+ 0x831: 0x1d,
+ // Block 0x21, offset 0x840
+ 0x85e: 0x1e,
+ // Block 0x22, offset 0x880
+ 0x898: 0x1f,
+ // Block 0x23, offset 0x8c0
+ 0x8c7: 0x18,
+ 0x8d5: 0x14,
+ 0x8f7: 0x20,
+ 0x8fe: 0x1f,
+ // Block 0x24, offset 0x900
+ 0x905: 0x21,
+ // Block 0x25, offset 0x940
+ 0x966: 0x03,
+ // Block 0x26, offset 0x980
+ 0x981: 0x07, 0x983: 0x11,
+ 0x989: 0x12, 0x98a: 0x13, 0x98e: 0x14, 0x98f: 0x15,
+ 0x992: 0x16, 0x995: 0x17, 0x996: 0x18,
+ 0x998: 0x19, 0x999: 0x1a, 0x99b: 0x1b, 0x99f: 0x1c,
+ 0x9a3: 0x1d,
+ 0x9ad: 0x1e, 0x9af: 0x1f,
+ 0x9b0: 0x20, 0x9b1: 0x21,
+ 0x9b8: 0x22, 0x9bd: 0x23,
+ // Block 0x27, offset 0x9c0
+ 0x9cd: 0x22,
+ // Block 0x28, offset 0xa00
+ 0xa0c: 0x08,
+ // Block 0x29, offset 0xa40
+ 0xa6f: 0x1c,
+ // Block 0x2a, offset 0xa80
+ 0xa90: 0x1a,
+ 0xaaf: 0x23,
+ // Block 0x2b, offset 0xac0
+ 0xae3: 0x19,
+ 0xae8: 0x24,
+ 0xafc: 0x25,
+ // Block 0x2c, offset 0xb00
+ 0xb13: 0x26,
+ // Block 0x2d, offset 0xb40
+ 0xb67: 0x1c,
+ // Block 0x2e, offset 0xb80
+ 0xb8f: 0x0b,
+ // Block 0x2f, offset 0xbc0
+ 0xbcb: 0x27,
+ 0xbe7: 0x26,
+ // Block 0x30, offset 0xc00
+ 0xc34: 0x16,
+ // Block 0x31, offset 0xc40
+ 0xc62: 0x03,
+ // Block 0x32, offset 0xc80
+ 0xcbb: 0x12,
+ // Block 0x33, offset 0xcc0
+ 0xcdf: 0x09,
+ // Block 0x34, offset 0xd00
+ 0xd34: 0x0a,
+ // Block 0x35, offset 0xd40
+ 0xd41: 0x1e,
+ // Block 0x36, offset 0xd80
+ 0xd83: 0x28,
+ // Block 0x37, offset 0xdc0
+ 0xdc0: 0x15,
+ // Block 0x38, offset 0xe00
+ 0xe1a: 0x15,
+ // Block 0x39, offset 0xe40
+ 0xe65: 0x29,
+ // Block 0x3a, offset 0xe80
+ 0xe86: 0x1f,
+ // Block 0x3b, offset 0xec0
+ 0xeec: 0x18,
+ // Block 0x3c, offset 0xf00
+ 0xf28: 0x2a,
+ // Block 0x3d, offset 0xf40
+ 0xf53: 0x08,
+ // Block 0x3e, offset 0xf80
+ 0xfa2: 0x2b,
+ 0xfaa: 0x17,
+ // Block 0x3f, offset 0xfc0
+ 0xfc0: 0x25, 0xfc2: 0x26,
+ 0xfc9: 0x27, 0xfcd: 0x28, 0xfce: 0x29,
+ 0xfd5: 0x2a,
+ 0xfd8: 0x2b, 0xfd9: 0x2c, 0xfdf: 0x2d,
+ 0xfe1: 0x2e, 0xfe2: 0x2f, 0xfe3: 0x30, 0xfe6: 0x31,
+ 0xfe9: 0x32, 0xfec: 0x33, 0xfed: 0x34, 0xfef: 0x35,
+ 0xff1: 0x36, 0xff2: 0x37, 0xff3: 0x38, 0xff4: 0x39,
+ 0xffa: 0x3a, 0xffc: 0x3b, 0xffe: 0x3c,
+ // Block 0x40, offset 0x1000
+ 0x102c: 0x2c,
+ // Block 0x41, offset 0x1040
+ 0x1074: 0x2c,
+ // Block 0x42, offset 0x1080
+ 0x108c: 0x08,
+ 0x10a0: 0x2d,
+ // Block 0x43, offset 0x10c0
+ 0x10e8: 0x10,
+ // Block 0x44, offset 0x1100
+ 0x110f: 0x13,
+ // Block 0x45, offset 0x1140
+ 0x114b: 0x2e,
+ // Block 0x46, offset 0x1180
+ 0x118b: 0x23,
+ 0x119d: 0x0c,
+ // Block 0x47, offset 0x11c0
+ 0x11c3: 0x12,
+ 0x11f9: 0x0f,
+ // Block 0x48, offset 0x1200
+ 0x121e: 0x1b,
+ // Block 0x49, offset 0x1240
+ 0x1270: 0x2f,
+ // Block 0x4a, offset 0x1280
+ 0x128a: 0x1b,
+ 0x12a7: 0x02,
+ // Block 0x4b, offset 0x12c0
+ 0x12fb: 0x14,
+ // Block 0x4c, offset 0x1300
+ 0x1333: 0x30,
+ // Block 0x4d, offset 0x1340
+ 0x134d: 0x31,
+ // Block 0x4e, offset 0x1380
+ 0x138e: 0x15,
+ // Block 0x4f, offset 0x13c0
+ 0x13f4: 0x32,
+ // Block 0x50, offset 0x1400
+ 0x141b: 0x33,
+ // Block 0x51, offset 0x1440
+ 0x1448: 0x3e, 0x1449: 0x3f, 0x144a: 0x40, 0x144f: 0x41,
+ 0x1459: 0x42, 0x145c: 0x43, 0x145e: 0x44, 0x145f: 0x45,
+ 0x1468: 0x46, 0x1469: 0x47, 0x146c: 0x48, 0x146d: 0x49, 0x146e: 0x4a,
+ 0x1472: 0x4b, 0x1473: 0x4c,
+ 0x1479: 0x4d, 0x147b: 0x4e,
+ // Block 0x52, offset 0x1480
+ 0x1480: 0x34,
+ 0x1499: 0x11,
+ 0x14b6: 0x2c,
+ // Block 0x53, offset 0x14c0
+ 0x14e4: 0x0d,
+ // Block 0x54, offset 0x1500
+ 0x1527: 0x08,
+ // Block 0x55, offset 0x1540
+ 0x1555: 0x2b,
+ // Block 0x56, offset 0x1580
+ 0x15b2: 0x35,
+ // Block 0x57, offset 0x15c0
+ 0x15f2: 0x1c, 0x15f4: 0x29,
+ // Block 0x58, offset 0x1600
+ 0x1600: 0x50, 0x1603: 0x51,
+ 0x1608: 0x52, 0x160a: 0x53, 0x160d: 0x54, 0x160e: 0x55,
+}
+
+// lookup returns the trie value for the first UTF-8 encoding in s and
+// the width in bytes of this encoding. The size will be 0 if s does not
+// hold enough bytes to complete the encoding. len(s) must be greater than 0.
+func (t *multiTrie) lookup(s []byte) (v uint64, sz int) {
+ c0 := s[0]
+ switch {
+ case c0 < 0x80: // is ASCII
+ return t.ascii[c0], 1
+ case c0 < 0xC2:
+ return 0, 1 // Illegal UTF-8: not a starter, not ASCII.
+ case c0 < 0xE0: // 2-byte UTF-8
+ if len(s) < 2 {
+ return 0, 0
+ }
+ i := t.utf8Start[c0]
+ c1 := s[1]
+ if c1 < 0x80 || 0xC0 <= c1 {
+ return 0, 1 // Illegal UTF-8: not a continuation byte.
+ }
+ return t.lookupValue(uint32(i), c1), 2
+ case c0 < 0xF0: // 3-byte UTF-8
+ if len(s) < 3 {
+ return 0, 0
+ }
+ i := t.utf8Start[c0]
+ c1 := s[1]
+ if c1 < 0x80 || 0xC0 <= c1 {
+ return 0, 1 // Illegal UTF-8: not a continuation byte.
+ }
+ o := uint32(i)<<6 + uint32(c1)
+ i = multiIndex[o]
+ c2 := s[2]
+ if c2 < 0x80 || 0xC0 <= c2 {
+ return 0, 2 // Illegal UTF-8: not a continuation byte.
+ }
+ return t.lookupValue(uint32(i), c2), 3
+ case c0 < 0xF8: // 4-byte UTF-8
+ if len(s) < 4 {
+ return 0, 0
+ }
+ i := t.utf8Start[c0]
+ c1 := s[1]
+ if c1 < 0x80 || 0xC0 <= c1 {
+ return 0, 1 // Illegal UTF-8: not a continuation byte.
+ }
+ o := uint32(i)<<6 + uint32(c1)
+ i = multiIndex[o]
+ c2 := s[2]
+ if c2 < 0x80 || 0xC0 <= c2 {
+ return 0, 2 // Illegal UTF-8: not a continuation byte.
+ }
+ o = uint32(i)<<6 + uint32(c2)
+ i = multiIndex[o]
+ c3 := s[3]
+ if c3 < 0x80 || 0xC0 <= c3 {
+ return 0, 3 // Illegal UTF-8: not a continuation byte.
+ }
+ return t.lookupValue(uint32(i), c3), 4
+ }
+ // Illegal rune
+ return 0, 1
+}
+
+// lookupUnsafe returns the trie value for the first UTF-8 encoding in s.
+// s must start with a full and valid UTF-8 encoded rune.
+func (t *multiTrie) lookupUnsafe(s []byte) uint64 {
+ c0 := s[0]
+ if c0 < 0x80 { // is ASCII
+ return t.ascii[c0]
+ }
+ i := t.utf8Start[c0]
+ if c0 < 0xE0 { // 2-byte UTF-8
+ return t.lookupValue(uint32(i), s[1])
+ }
+ i = multiIndex[uint32(i)<<6+uint32(s[1])]
+ if c0 < 0xF0 { // 3-byte UTF-8
+ return t.lookupValue(uint32(i), s[2])
+ }
+ i = multiIndex[uint32(i)<<6+uint32(s[2])]
+ if c0 < 0xF8 { // 4-byte UTF-8
+ return t.lookupValue(uint32(i), s[3])
+ }
+ return 0
+}
+
+// lookupString returns the trie value for the first UTF-8 encoding in s and
+// the width in bytes of this encoding. The size will be 0 if s does not
+// hold enough bytes to complete the encoding. len(s) must be greater than 0.
+func (t *multiTrie) lookupString(s string) (v uint64, sz int) {
+ c0 := s[0]
+ switch {
+ case c0 < 0x80: // is ASCII
+ return t.ascii[c0], 1
+ case c0 < 0xC2:
+ return 0, 1 // Illegal UTF-8: not a starter, not ASCII.
+ case c0 < 0xE0: // 2-byte UTF-8
+ if len(s) < 2 {
+ return 0, 0
+ }
+ i := t.utf8Start[c0]
+ c1 := s[1]
+ if c1 < 0x80 || 0xC0 <= c1 {
+ return 0, 1 // Illegal UTF-8: not a continuation byte.
+ }
+ return t.lookupValue(uint32(i), c1), 2
+ case c0 < 0xF0: // 3-byte UTF-8
+ if len(s) < 3 {
+ return 0, 0
+ }
+ i := t.utf8Start[c0]
+ c1 := s[1]
+ if c1 < 0x80 || 0xC0 <= c1 {
+ return 0, 1 // Illegal UTF-8: not a continuation byte.
+ }
+ o := uint32(i)<<6 + uint32(c1)
+ i = multiIndex[o]
+ c2 := s[2]
+ if c2 < 0x80 || 0xC0 <= c2 {
+ return 0, 2 // Illegal UTF-8: not a continuation byte.
+ }
+ return t.lookupValue(uint32(i), c2), 3
+ case c0 < 0xF8: // 4-byte UTF-8
+ if len(s) < 4 {
+ return 0, 0
+ }
+ i := t.utf8Start[c0]
+ c1 := s[1]
+ if c1 < 0x80 || 0xC0 <= c1 {
+ return 0, 1 // Illegal UTF-8: not a continuation byte.
+ }
+ o := uint32(i)<<6 + uint32(c1)
+ i = multiIndex[o]
+ c2 := s[2]
+ if c2 < 0x80 || 0xC0 <= c2 {
+ return 0, 2 // Illegal UTF-8: not a continuation byte.
+ }
+ o = uint32(i)<<6 + uint32(c2)
+ i = multiIndex[o]
+ c3 := s[3]
+ if c3 < 0x80 || 0xC0 <= c3 {
+ return 0, 3 // Illegal UTF-8: not a continuation byte.
+ }
+ return t.lookupValue(uint32(i), c3), 4
+ }
+ // Illegal rune
+ return 0, 1
+}
+
+// lookupStringUnsafe returns the trie value for the first UTF-8 encoding in s.
+// s must start with a full and valid UTF-8 encoded rune.
+func (t *multiTrie) lookupStringUnsafe(s string) uint64 {
+ c0 := s[0]
+ if c0 < 0x80 { // is ASCII
+ return t.ascii[c0]
+ }
+ i := t.utf8Start[c0]
+ if c0 < 0xE0 { // 2-byte UTF-8
+ return t.lookupValue(uint32(i), s[1])
+ }
+ i = multiIndex[uint32(i)<<6+uint32(s[1])]
+ if c0 < 0xF0 { // 3-byte UTF-8
+ return t.lookupValue(uint32(i), s[2])
+ }
+ i = multiIndex[uint32(i)<<6+uint32(s[2])]
+ if c0 < 0xF8 { // 4-byte UTF-8
+ return t.lookupValue(uint32(i), s[3])
+ }
+ return 0
+}
+
+// multiTrie. Total size: 18250 bytes (17.82 KiB). Checksum: a69a609d8696aa5e.
+type multiTrie struct {
+ ascii []uint64 // index for ASCII bytes
+ utf8Start []uint8 // index for UTF-8 bytes >= 0xC0
+}
+
+func newMultiTrie(i int) *multiTrie {
+ h := multiTrieHandles[i]
+ return &multiTrie{multiValues[uint32(h.ascii)<<6:], multiIndex[uint32(h.multi)<<6:]}
+}
+
+type multiTrieHandle struct {
+ ascii, multi uint8
+}
+
+// multiTrieHandles: 5 handles, 10 bytes
+var multiTrieHandles = [5]multiTrieHandle{
+ {0, 0}, // 8c1e77823143d35c: all
+ {0, 23}, // 8fb58ff8243b45b0: ASCII only
+ {0, 23}, // 8fb58ff8243b45b0: ASCII only 2
+ {0, 24}, // 2ccc43994f11046f: BMP only
+ {30, 25}, // ce448591bdcb4733: No BMP
+}
+
+// lookupValue determines the type of block n and looks up the value for b.
+func (t *multiTrie) lookupValue(n uint32, b byte) uint64 {
+ switch {
+ default:
+ return uint64(multiValues[n<<6+uint32(b)])
+ }
+}
+
+// multiValues: 32 blocks, 2048 entries, 16384 bytes
+// The third block is the zero block.
+var multiValues = [2048]uint64{
+ // Block 0x0, offset 0x0
+ 0x03: 0x6e361699800b9fb8, 0x04: 0x52d3935a34f6f0b, 0x05: 0x2948319393e7ef10,
+ 0x07: 0x20f03b006704f663, 0x08: 0x6c15c0732bb2495f, 0x09: 0xe54e2c59d953551,
+ 0x0f: 0x33d8a825807d8037, 0x10: 0x6ecd93cb12168b92, 0x11: 0x6a81c9c0ce86e884,
+ 0x1f: 0xa03e77aac8be79b, 0x20: 0x28591d0e7e486efa, 0x21: 0x716fa3bc398dec8,
+ 0x3f: 0x4fd3bcfa72bce8b0,
+ // Block 0x1, offset 0x40
+ 0x40: 0x3cbaef3db8ba5f12, 0x41: 0x2d262347c1f56357,
+ 0x7f: 0x782caa2d25a418a9,
+ // Block 0x2, offset 0x80
+ // Block 0x3, offset 0xc0
+ 0xc0: 0x6bbd1f937b1ff5d2, 0xc1: 0x732e23088d2eb8a4,
+ // Block 0x4, offset 0x100
+ 0x13f: 0x56f8c4c82f5962dc,
+ // Block 0x5, offset 0x140
+ 0x140: 0x57dc4544729a5da2, 0x141: 0x2f62f9cd307ffa0d,
+ // Block 0x6, offset 0x180
+ 0x1bf: 0x7bf4d0ebf302a088,
+ // Block 0x7, offset 0x1c0
+ 0x1c0: 0x1f0d67f249e59931, 0x1c1: 0x3011def73aa550c7,
+ // Block 0x8, offset 0x200
+ 0x23f: 0x5de81c1dff6bf29d,
+ // Block 0x9, offset 0x240
+ 0x240: 0x752c035737b825e8, 0x241: 0x1e793399081e3bb3,
+ // Block 0xa, offset 0x280
+ 0x2bf: 0x6a28f01979cbf059,
+ // Block 0xb, offset 0x2c0
+ 0x2c0: 0x373a4b0f2cbd4c74, 0x2c1: 0x4fd2c288683b767c,
+ // Block 0xc, offset 0x300
+ 0x33f: 0x5a10ffa9e29184fb,
+ // Block 0xd, offset 0x340
+ 0x340: 0x700f9bdb53fff6a5, 0x341: 0xcde93df0427eb79,
+ // Block 0xe, offset 0x380
+ 0x3bf: 0x74071288fff39c76,
+ // Block 0xf, offset 0x3c0
+ 0x3c0: 0x481fc2f510e5268a, 0x3c1: 0x7565c28164204849,
+ // Block 0x10, offset 0x400
+ 0x43f: 0x5676a62fd49c6bec,
+ // Block 0x11, offset 0x440
+ 0x440: 0x2f2d15776cbafc6b, 0x441: 0x4c55e8dc0ff11a3f,
+ // Block 0x12, offset 0x480
+ 0x4bf: 0x69d6f0fe711fafc9,
+ // Block 0x13, offset 0x4c0
+ 0x4c0: 0x33181de28cfb062d, 0x4c1: 0x2ef3adc6bb2f2d02,
+ // Block 0x14, offset 0x500
+ 0x53f: 0xe03b31814c95f8b,
+ // Block 0x15, offset 0x540
+ 0x540: 0x3bf6dc9a1c115603, 0x541: 0x6984ec9b7f51f7fc,
+ // Block 0x16, offset 0x580
+ 0x5bf: 0x3c02ea92fb168559,
+ // Block 0x17, offset 0x5c0
+ 0x5c0: 0x1badfe42e7629494, 0x5c1: 0x6dc4a554005f7645,
+ // Block 0x18, offset 0x600
+ 0x63f: 0x3bb2ed2a72748f4b,
+ // Block 0x19, offset 0x640
+ 0x640: 0x291354cd6767ec10, 0x641: 0x2c3a4715e3c070d6,
+ // Block 0x1a, offset 0x680
+ 0x6bf: 0x352711cfb7236418,
+ // Block 0x1b, offset 0x6c0
+ 0x6c0: 0x3a59d34fb8bceda, 0x6c1: 0x5e90d8ebedd64fa1,
+ // Block 0x1c, offset 0x700
+ 0x73f: 0x7191a77b28d23110,
+ // Block 0x1d, offset 0x740
+ 0x740: 0x4ca7f0c1623423d8, 0x741: 0x4f7156d996e2d0de,
+ // Block 0x1e, offset 0x780
+ // Block 0x1f, offset 0x7c0
+}
+
+// multiIndex: 29 blocks, 1856 entries, 1856 bytes
+// Block 0 is the zero block.
+var multiIndex = [1856]uint8{
+ // Block 0x0, offset 0x0
+ // Block 0x1, offset 0x40
+ // Block 0x2, offset 0x80
+ // Block 0x3, offset 0xc0
+ 0xc2: 0x01, 0xc3: 0x02, 0xc4: 0x03, 0xc7: 0x04,
+ 0xc8: 0x05, 0xcf: 0x06,
+ 0xd0: 0x07,
+ 0xdf: 0x08,
+ 0xe0: 0x02, 0xe1: 0x03, 0xe2: 0x04, 0xe3: 0x05, 0xe4: 0x06, 0xe7: 0x07,
+ 0xe8: 0x08, 0xef: 0x09,
+ 0xf0: 0x0e, 0xf1: 0x11, 0xf2: 0x13, 0xf3: 0x15, 0xf4: 0x17,
+ // Block 0x4, offset 0x100
+ 0x120: 0x09,
+ 0x13f: 0x0a,
+ // Block 0x5, offset 0x140
+ 0x140: 0x0b,
+ 0x17f: 0x0c,
+ // Block 0x6, offset 0x180
+ 0x180: 0x0d,
+ // Block 0x7, offset 0x1c0
+ 0x1ff: 0x0e,
+ // Block 0x8, offset 0x200
+ 0x200: 0x0f,
+ // Block 0x9, offset 0x240
+ 0x27f: 0x10,
+ // Block 0xa, offset 0x280
+ 0x280: 0x11,
+ // Block 0xb, offset 0x2c0
+ 0x2ff: 0x12,
+ // Block 0xc, offset 0x300
+ 0x300: 0x13,
+ // Block 0xd, offset 0x340
+ 0x37f: 0x14,
+ // Block 0xe, offset 0x380
+ 0x380: 0x15,
+ // Block 0xf, offset 0x3c0
+ 0x3ff: 0x16,
+ // Block 0x10, offset 0x400
+ 0x410: 0x0a,
+ 0x41f: 0x0b,
+ 0x420: 0x0c,
+ 0x43f: 0x0d,
+ // Block 0x11, offset 0x440
+ 0x440: 0x17,
+ // Block 0x12, offset 0x480
+ 0x4bf: 0x18,
+ // Block 0x13, offset 0x4c0
+ 0x4c0: 0x0f,
+ 0x4ff: 0x10,
+ // Block 0x14, offset 0x500
+ 0x500: 0x19,
+ // Block 0x15, offset 0x540
+ 0x540: 0x12,
+ // Block 0x16, offset 0x580
+ 0x5bf: 0x1a,
+ // Block 0x17, offset 0x5c0
+ 0x5ff: 0x14,
+ // Block 0x18, offset 0x600
+ 0x600: 0x1b,
+ // Block 0x19, offset 0x640
+ 0x640: 0x16,
+ // Block 0x1a, offset 0x680
+ // Block 0x1b, offset 0x6c0
+ 0x6c2: 0x01, 0x6c3: 0x02, 0x6c4: 0x03, 0x6c7: 0x04,
+ 0x6c8: 0x05, 0x6cf: 0x06,
+ 0x6d0: 0x07,
+ 0x6df: 0x08,
+ 0x6e0: 0x02, 0x6e1: 0x03, 0x6e2: 0x04, 0x6e3: 0x05, 0x6e4: 0x06, 0x6e7: 0x07,
+ 0x6e8: 0x08, 0x6ef: 0x09,
+ // Block 0x1c, offset 0x700
+ 0x730: 0x0e, 0x731: 0x11, 0x732: 0x13, 0x733: 0x15, 0x734: 0x17,
+}
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