Files
gonum/graph/formats/rdf/extract.go
Dan Kortschak d39af6a71b graph/formats/rdf: new package for RDF N-Quad parsing
This code is based on the RDF N-Quad parsing code that I wrote for the Cayley
graph database project in 2014. The code here does not include any code that
was written by other members of the Cayley project and so is unencumbered by
copyright ownership from that project.

License addition is for the test suite from [1] linked from [2]. A second more
restrictive license is possible if we are claiming spec compliance[3].

[1]https://www.w3.org/Consortium/Legal/2008/03-bsd-license
[2]https://www.w3.org/Consortium/Legal/2008/04-testsuite-copyright.html
[3]https://www.w3.org/Consortium/Legal/2008/04-testsuite-license.html
2021-01-13 20:31:06 +10:30

1185 lines
19 KiB
Go

//line extract.rl:1
// Go code generated by go generate gonum.org/v1/gonum/graph/formats/rdf; DO NOT EDIT.
// Copyright ©2020 The Gonum Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package rdf
import (
"fmt"
"unicode"
)
//line extract.go:18
const extract_start int = 1
const extract_first_final int = 31
const extract_error int = 0
const extract_en_value int = 1
//line extract.rl:28
func extract(data []rune) (text, qual string, kind Kind, err error) {
var (
cs, p int
pe = len(data)
eof = pe
iri = -1
blank = -1
literal = -1
lang = -1
iriText string
blankText string
literalText string
langText string
)
//line extract.go:47
{
cs = extract_start
}
//line extract.rl:48
//line extract.go:55
{
if p == pe {
goto _test_eof
}
switch cs {
case 1:
goto st_case_1
case 0:
goto st_case_0
case 2:
goto st_case_2
case 3:
goto st_case_3
case 31:
goto st_case_31
case 4:
goto st_case_4
case 32:
goto st_case_32
case 5:
goto st_case_5
case 33:
goto st_case_33
case 6:
goto st_case_6
case 7:
goto st_case_7
case 8:
goto st_case_8
case 9:
goto st_case_9
case 34:
goto st_case_34
case 10:
goto st_case_10
case 11:
goto st_case_11
case 12:
goto st_case_12
case 13:
goto st_case_13
case 14:
goto st_case_14
case 15:
goto st_case_15
case 16:
goto st_case_16
case 17:
goto st_case_17
case 18:
goto st_case_18
case 19:
goto st_case_19
case 20:
goto st_case_20
case 21:
goto st_case_21
case 22:
goto st_case_22
case 23:
goto st_case_23
case 24:
goto st_case_24
case 25:
goto st_case_25
case 26:
goto st_case_26
case 27:
goto st_case_27
case 28:
goto st_case_28
case 29:
goto st_case_29
case 35:
goto st_case_35
case 30:
goto st_case_30
}
goto st_out
st_case_1:
switch data[p] {
case 34:
goto st2
case 60:
goto st8
case 95:
goto st28
}
goto tr0
tr0:
//line extract_actions.rl:74
if p < len(data) {
if r := data[p]; r < unicode.MaxASCII {
return "", "", Invalid, fmt.Errorf("%w: unexpected rune %q at %d", ErrInvalidTerm, data[p], p)
} else {
return "", "", Invalid, fmt.Errorf("%w: unexpected rune %q (\\u%04[2]x) at %d", ErrInvalidTerm, data[p], p)
}
}
return "", "", Invalid, ErrIncompleteTerm
goto st0
//line extract.go:158
st_case_0:
st0:
cs = 0
goto _out
st2:
if p++; p == pe {
goto _test_eof2
}
st_case_2:
switch data[p] {
case 34:
goto tr5
case 92:
goto tr6
}
switch {
case data[p] < 11:
if 0 <= data[p] && data[p] <= 9 {
goto tr4
}
case data[p] > 12:
if 14 <= data[p] && data[p] <= 1114111 {
goto tr4
}
default:
goto tr4
}
goto tr0
tr4:
//line extract_actions.rl:34
literal = p
goto st3
st3:
if p++; p == pe {
goto _test_eof3
}
st_case_3:
//line extract.go:198
switch data[p] {
case 34:
goto tr8
case 92:
goto st19
}
switch {
case data[p] < 11:
if 0 <= data[p] && data[p] <= 9 {
goto st3
}
case data[p] > 12:
if 14 <= data[p] && data[p] <= 1114111 {
goto st3
}
default:
goto st3
}
goto tr0
tr5:
//line extract_actions.rl:34
literal = p
//line extract_actions.rl:38
if literal < 0 {
panic("unexpected parser state: literal start not set")
}
literalText = unEscape(data[literal:p])
kind = Literal
goto st31
tr8:
//line extract_actions.rl:38
if literal < 0 {
panic("unexpected parser state: literal start not set")
}
literalText = unEscape(data[literal:p])
kind = Literal
goto st31
st31:
if p++; p == pe {
goto _test_eof31
}
st_case_31:
//line extract.go:247
switch data[p] {
case 64:
goto tr39
case 94:
goto st6
}
goto st0
tr39:
//line extract_actions.rl:46
lang = p
goto st4
st4:
if p++; p == pe {
goto _test_eof4
}
st_case_4:
//line extract.go:266
switch {
case data[p] > 90:
if 97 <= data[p] && data[p] <= 122 {
goto st32
}
case data[p] >= 65:
goto st32
}
goto tr0
st32:
if p++; p == pe {
goto _test_eof32
}
st_case_32:
if data[p] == 45 {
goto st5
}
switch {
case data[p] > 90:
if 97 <= data[p] && data[p] <= 122 {
goto st32
}
case data[p] >= 65:
goto st32
}
goto st0
st5:
if p++; p == pe {
goto _test_eof5
}
st_case_5:
switch {
case data[p] < 65:
if 48 <= data[p] && data[p] <= 57 {
goto st33
}
case data[p] > 90:
if 97 <= data[p] && data[p] <= 122 {
goto st33
}
default:
goto st33
}
goto tr0
st33:
if p++; p == pe {
goto _test_eof33
}
st_case_33:
if data[p] == 45 {
goto st5
}
switch {
case data[p] < 65:
if 48 <= data[p] && data[p] <= 57 {
goto st33
}
case data[p] > 90:
if 97 <= data[p] && data[p] <= 122 {
goto st33
}
default:
goto st33
}
goto st0
st6:
if p++; p == pe {
goto _test_eof6
}
st_case_6:
if data[p] == 94 {
goto st7
}
goto tr0
st7:
if p++; p == pe {
goto _test_eof7
}
st_case_7:
if data[p] == 60 {
goto st8
}
goto tr0
st8:
if p++; p == pe {
goto _test_eof8
}
st_case_8:
switch data[p] {
case 62:
goto tr14
case 92:
goto tr15
case 95:
goto tr13
case 126:
goto tr13
}
switch {
case data[p] < 61:
if 33 <= data[p] && data[p] <= 59 {
goto tr13
}
case data[p] > 93:
switch {
case data[p] > 122:
if 128 <= data[p] && data[p] <= 1114111 {
goto tr13
}
case data[p] >= 97:
goto tr13
}
default:
goto tr13
}
goto tr0
tr13:
//line extract_actions.rl:8
iri = p
goto st9
st9:
if p++; p == pe {
goto _test_eof9
}
st_case_9:
//line extract.go:394
switch data[p] {
case 62:
goto tr17
case 92:
goto st10
case 95:
goto st9
case 126:
goto st9
}
switch {
case data[p] < 61:
if 33 <= data[p] && data[p] <= 59 {
goto st9
}
case data[p] > 93:
switch {
case data[p] > 122:
if 128 <= data[p] && data[p] <= 1114111 {
goto st9
}
case data[p] >= 97:
goto st9
}
default:
goto st9
}
goto tr0
tr14:
//line extract_actions.rl:8
iri = p
//line extract_actions.rl:12
if iri < 0 {
panic("unexpected parser state: iri start not set")
}
iriText = unEscape(data[iri:p])
if kind == Invalid {
kind = IRI
}
goto st34
tr17:
//line extract_actions.rl:12
if iri < 0 {
panic("unexpected parser state: iri start not set")
}
iriText = unEscape(data[iri:p])
if kind == Invalid {
kind = IRI
}
goto st34
st34:
if p++; p == pe {
goto _test_eof34
}
st_case_34:
//line extract.go:456
goto st0
tr15:
//line extract_actions.rl:8
iri = p
goto st10
st10:
if p++; p == pe {
goto _test_eof10
}
st_case_10:
//line extract.go:469
switch data[p] {
case 85:
goto st11
case 117:
goto st15
}
goto tr0
st11:
if p++; p == pe {
goto _test_eof11
}
st_case_11:
switch {
case data[p] < 65:
if 48 <= data[p] && data[p] <= 57 {
goto st12
}
case data[p] > 70:
if 97 <= data[p] && data[p] <= 102 {
goto st12
}
default:
goto st12
}
goto tr0
st12:
if p++; p == pe {
goto _test_eof12
}
st_case_12:
switch {
case data[p] < 65:
if 48 <= data[p] && data[p] <= 57 {
goto st13
}
case data[p] > 70:
if 97 <= data[p] && data[p] <= 102 {
goto st13
}
default:
goto st13
}
goto tr0
st13:
if p++; p == pe {
goto _test_eof13
}
st_case_13:
switch {
case data[p] < 65:
if 48 <= data[p] && data[p] <= 57 {
goto st14
}
case data[p] > 70:
if 97 <= data[p] && data[p] <= 102 {
goto st14
}
default:
goto st14
}
goto tr0
st14:
if p++; p == pe {
goto _test_eof14
}
st_case_14:
switch {
case data[p] < 65:
if 48 <= data[p] && data[p] <= 57 {
goto st15
}
case data[p] > 70:
if 97 <= data[p] && data[p] <= 102 {
goto st15
}
default:
goto st15
}
goto tr0
st15:
if p++; p == pe {
goto _test_eof15
}
st_case_15:
switch {
case data[p] < 65:
if 48 <= data[p] && data[p] <= 57 {
goto st16
}
case data[p] > 70:
if 97 <= data[p] && data[p] <= 102 {
goto st16
}
default:
goto st16
}
goto tr0
st16:
if p++; p == pe {
goto _test_eof16
}
st_case_16:
switch {
case data[p] < 65:
if 48 <= data[p] && data[p] <= 57 {
goto st17
}
case data[p] > 70:
if 97 <= data[p] && data[p] <= 102 {
goto st17
}
default:
goto st17
}
goto tr0
st17:
if p++; p == pe {
goto _test_eof17
}
st_case_17:
switch {
case data[p] < 65:
if 48 <= data[p] && data[p] <= 57 {
goto st18
}
case data[p] > 70:
if 97 <= data[p] && data[p] <= 102 {
goto st18
}
default:
goto st18
}
goto tr0
st18:
if p++; p == pe {
goto _test_eof18
}
st_case_18:
switch {
case data[p] < 65:
if 48 <= data[p] && data[p] <= 57 {
goto st9
}
case data[p] > 70:
if 97 <= data[p] && data[p] <= 102 {
goto st9
}
default:
goto st9
}
goto tr0
tr6:
//line extract_actions.rl:34
literal = p
goto st19
st19:
if p++; p == pe {
goto _test_eof19
}
st_case_19:
//line extract.go:632
switch data[p] {
case 34:
goto st3
case 39:
goto st3
case 85:
goto st20
case 92:
goto st3
case 98:
goto st3
case 102:
goto st3
case 110:
goto st3
case 114:
goto st3
case 116:
goto st3
case 117:
goto st24
}
goto tr0
st20:
if p++; p == pe {
goto _test_eof20
}
st_case_20:
switch {
case data[p] < 65:
if 48 <= data[p] && data[p] <= 57 {
goto st21
}
case data[p] > 70:
if 97 <= data[p] && data[p] <= 102 {
goto st21
}
default:
goto st21
}
goto tr0
st21:
if p++; p == pe {
goto _test_eof21
}
st_case_21:
switch {
case data[p] < 65:
if 48 <= data[p] && data[p] <= 57 {
goto st22
}
case data[p] > 70:
if 97 <= data[p] && data[p] <= 102 {
goto st22
}
default:
goto st22
}
goto tr0
st22:
if p++; p == pe {
goto _test_eof22
}
st_case_22:
switch {
case data[p] < 65:
if 48 <= data[p] && data[p] <= 57 {
goto st23
}
case data[p] > 70:
if 97 <= data[p] && data[p] <= 102 {
goto st23
}
default:
goto st23
}
goto tr0
st23:
if p++; p == pe {
goto _test_eof23
}
st_case_23:
switch {
case data[p] < 65:
if 48 <= data[p] && data[p] <= 57 {
goto st24
}
case data[p] > 70:
if 97 <= data[p] && data[p] <= 102 {
goto st24
}
default:
goto st24
}
goto tr0
st24:
if p++; p == pe {
goto _test_eof24
}
st_case_24:
switch {
case data[p] < 65:
if 48 <= data[p] && data[p] <= 57 {
goto st25
}
case data[p] > 70:
if 97 <= data[p] && data[p] <= 102 {
goto st25
}
default:
goto st25
}
goto tr0
st25:
if p++; p == pe {
goto _test_eof25
}
st_case_25:
switch {
case data[p] < 65:
if 48 <= data[p] && data[p] <= 57 {
goto st26
}
case data[p] > 70:
if 97 <= data[p] && data[p] <= 102 {
goto st26
}
default:
goto st26
}
goto tr0
st26:
if p++; p == pe {
goto _test_eof26
}
st_case_26:
switch {
case data[p] < 65:
if 48 <= data[p] && data[p] <= 57 {
goto st27
}
case data[p] > 70:
if 97 <= data[p] && data[p] <= 102 {
goto st27
}
default:
goto st27
}
goto tr0
st27:
if p++; p == pe {
goto _test_eof27
}
st_case_27:
switch {
case data[p] < 65:
if 48 <= data[p] && data[p] <= 57 {
goto st3
}
case data[p] > 70:
if 97 <= data[p] && data[p] <= 102 {
goto st3
}
default:
goto st3
}
goto tr0
st28:
if p++; p == pe {
goto _test_eof28
}
st_case_28:
if data[p] == 58 {
goto st29
}
goto tr0
st29:
if p++; p == pe {
goto _test_eof29
}
st_case_29:
if data[p] == 95 {
goto tr36
}
switch {
case data[p] < 895:
switch {
case data[p] < 192:
switch {
case data[p] < 65:
if 48 <= data[p] && data[p] <= 58 {
goto tr36
}
case data[p] > 90:
if 97 <= data[p] && data[p] <= 122 {
goto tr36
}
default:
goto tr36
}
case data[p] > 214:
switch {
case data[p] < 248:
if 216 <= data[p] && data[p] <= 246 {
goto tr36
}
case data[p] > 767:
if 880 <= data[p] && data[p] <= 893 {
goto tr36
}
default:
goto tr36
}
default:
goto tr36
}
case data[p] > 8191:
switch {
case data[p] < 12289:
switch {
case data[p] < 8304:
if 8204 <= data[p] && data[p] <= 8205 {
goto tr36
}
case data[p] > 8591:
if 11264 <= data[p] && data[p] <= 12271 {
goto tr36
}
default:
goto tr36
}
case data[p] > 55295:
switch {
case data[p] < 65008:
if 63744 <= data[p] && data[p] <= 64975 {
goto tr36
}
case data[p] > 65533:
if 65536 <= data[p] && data[p] <= 983039 {
goto tr36
}
default:
goto tr36
}
default:
goto tr36
}
default:
goto tr36
}
goto tr0
tr36:
//line extract_actions.rl:22
blank = p
goto st35
st35:
if p++; p == pe {
goto _test_eof35
}
st_case_35:
//line extract.go:895
switch data[p] {
case 45:
goto st35
case 46:
goto st30
case 95:
goto st35
case 183:
goto st35
}
switch {
case data[p] < 8204:
switch {
case data[p] < 192:
switch {
case data[p] < 65:
if 48 <= data[p] && data[p] <= 58 {
goto st35
}
case data[p] > 90:
if 97 <= data[p] && data[p] <= 122 {
goto st35
}
default:
goto st35
}
case data[p] > 214:
switch {
case data[p] < 248:
if 216 <= data[p] && data[p] <= 246 {
goto st35
}
case data[p] > 893:
if 895 <= data[p] && data[p] <= 8191 {
goto st35
}
default:
goto st35
}
default:
goto st35
}
case data[p] > 8205:
switch {
case data[p] < 12289:
switch {
case data[p] < 8304:
if 8255 <= data[p] && data[p] <= 8256 {
goto st35
}
case data[p] > 8591:
if 11264 <= data[p] && data[p] <= 12271 {
goto st35
}
default:
goto st35
}
case data[p] > 55295:
switch {
case data[p] < 65008:
if 63744 <= data[p] && data[p] <= 64975 {
goto st35
}
case data[p] > 65533:
if 65536 <= data[p] && data[p] <= 983039 {
goto st35
}
default:
goto st35
}
default:
goto st35
}
default:
goto st35
}
goto st0
st30:
if p++; p == pe {
goto _test_eof30
}
st_case_30:
switch data[p] {
case 45:
goto st35
case 46:
goto st30
case 95:
goto st35
case 183:
goto st35
}
switch {
case data[p] < 8204:
switch {
case data[p] < 192:
switch {
case data[p] < 65:
if 48 <= data[p] && data[p] <= 58 {
goto st35
}
case data[p] > 90:
if 97 <= data[p] && data[p] <= 122 {
goto st35
}
default:
goto st35
}
case data[p] > 214:
switch {
case data[p] < 248:
if 216 <= data[p] && data[p] <= 246 {
goto st35
}
case data[p] > 893:
if 895 <= data[p] && data[p] <= 8191 {
goto st35
}
default:
goto st35
}
default:
goto st35
}
case data[p] > 8205:
switch {
case data[p] < 12289:
switch {
case data[p] < 8304:
if 8255 <= data[p] && data[p] <= 8256 {
goto st35
}
case data[p] > 8591:
if 11264 <= data[p] && data[p] <= 12271 {
goto st35
}
default:
goto st35
}
case data[p] > 55295:
switch {
case data[p] < 65008:
if 63744 <= data[p] && data[p] <= 64975 {
goto st35
}
case data[p] > 65533:
if 65536 <= data[p] && data[p] <= 983039 {
goto st35
}
default:
goto st35
}
default:
goto st35
}
default:
goto st35
}
goto tr0
st_out:
_test_eof2: cs = 2; goto _test_eof
_test_eof3: cs = 3; goto _test_eof
_test_eof31: cs = 31; goto _test_eof
_test_eof4: cs = 4; goto _test_eof
_test_eof32: cs = 32; goto _test_eof
_test_eof5: cs = 5; goto _test_eof
_test_eof33: cs = 33; goto _test_eof
_test_eof6: cs = 6; goto _test_eof
_test_eof7: cs = 7; goto _test_eof
_test_eof8: cs = 8; goto _test_eof
_test_eof9: cs = 9; goto _test_eof
_test_eof34: cs = 34; goto _test_eof
_test_eof10: cs = 10; goto _test_eof
_test_eof11: cs = 11; goto _test_eof
_test_eof12: cs = 12; goto _test_eof
_test_eof13: cs = 13; goto _test_eof
_test_eof14: cs = 14; goto _test_eof
_test_eof15: cs = 15; goto _test_eof
_test_eof16: cs = 16; goto _test_eof
_test_eof17: cs = 17; goto _test_eof
_test_eof18: cs = 18; goto _test_eof
_test_eof19: cs = 19; goto _test_eof
_test_eof20: cs = 20; goto _test_eof
_test_eof21: cs = 21; goto _test_eof
_test_eof22: cs = 22; goto _test_eof
_test_eof23: cs = 23; goto _test_eof
_test_eof24: cs = 24; goto _test_eof
_test_eof25: cs = 25; goto _test_eof
_test_eof26: cs = 26; goto _test_eof
_test_eof27: cs = 27; goto _test_eof
_test_eof28: cs = 28; goto _test_eof
_test_eof29: cs = 29; goto _test_eof
_test_eof35: cs = 35; goto _test_eof
_test_eof30: cs = 30; goto _test_eof
_test_eof: {}
if p == eof {
switch cs {
case 31, 34:
//line extract_actions.rl:57
switch kind {
case IRI:
return iriText, "", kind, nil
case Blank:
return blankText, "", kind, nil
case Literal:
qual = iriText
if qual == "" {
qual = langText
}
return literalText, qual, kind, nil
default:
return "", "", kind, ErrInvalidTerm
}
case 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:
//line extract_actions.rl:74
if p < len(data) {
if r := data[p]; r < unicode.MaxASCII {
return "", "", Invalid, fmt.Errorf("%w: unexpected rune %q at %d", ErrInvalidTerm, data[p], p)
} else {
return "", "", Invalid, fmt.Errorf("%w: unexpected rune %q (\\u%04[2]x) at %d", ErrInvalidTerm, data[p], p)
}
}
return "", "", Invalid, ErrIncompleteTerm
case 35:
//line extract_actions.rl:26
if blank < 0 {
panic("unexpected parser state: blank start not set")
}
blankText = string(data[blank:p])
kind = Blank
//line extract_actions.rl:57
switch kind {
case IRI:
return iriText, "", kind, nil
case Blank:
return blankText, "", kind, nil
case Literal:
qual = iriText
if qual == "" {
qual = langText
}
return literalText, qual, kind, nil
default:
return "", "", kind, ErrInvalidTerm
}
case 32, 33:
//line extract_actions.rl:50
if lang < 0 {
panic("unexpected parser state: lang start not set")
}
langText = string(data[lang:p])
//line extract_actions.rl:57
switch kind {
case IRI:
return iriText, "", kind, nil
case Blank:
return blankText, "", kind, nil
case Literal:
qual = iriText
if qual == "" {
qual = langText
}
return literalText, qual, kind, nil
default:
return "", "", kind, ErrInvalidTerm
}
//line extract.go:1175
}
}
_out: {}
}
//line extract.rl:50
return "", "", 0, ErrInvalidTerm
}