Generate code for parser
G2 code generation used after benchmarking. style benchmark old ns/op new ns/op delta T0 BenchmarkParser 672 5631 +737.95% T1 BenchmarkParser 672 5579 +730.21% G0 BenchmarkParser 672 4049 +502.53% G1 BenchmarkParser 672 3868 +475.60% G2 BenchmarkParser 672 3543 +427.23% F0 and F1 create massive Go source (6.0M) and so were not tested. Invalid tests removed, additional tests for invalid input to be added later.
This commit is contained in:
kortschak
parent
92d50bb9f7
commit
22bad1701f
3 changed files with 3316 additions and 205 deletions
141
nquads/nquads.go
141
nquads/nquads.go
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@ -19,7 +19,6 @@ import (
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"errors"
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"fmt"
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"io"
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"strings"
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"github.com/google/cayley/graph"
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)
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@ -32,143 +31,11 @@ var (
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)
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func Parse(str string) (*graph.Triple, error) {
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// Skip leading whitespace.
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str = trimSpace(str)
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// Check for a comment
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if str != "" && str[0] == '#' {
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return nil, nil
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t, err := parse([]rune(str))
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if err != nil {
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return nil, err
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}
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sub, remainder := getTripleComponent(str)
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if sub == "" {
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return nil, ErrAbsentSubject
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}
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str = trimSpace(remainder)
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pred, remainder := getTripleComponent(str)
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if pred == "" {
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return nil, ErrAbsentPredicate
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}
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str = trimSpace(remainder)
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obj, remainder := getTripleComponent(str)
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if obj == "" {
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return nil, ErrAbsentObject
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}
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str = trimSpace(remainder)
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prov, remainder := getTripleComponent(str)
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str = trimSpace(remainder)
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if str != "" && str[0] == '.' {
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return &graph.Triple{sub, pred, obj, prov}, nil
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}
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return nil, ErrUnterminated
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}
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func isSpace(s uint8) bool {
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return s == ' ' || s == '\t' || s == '\r'
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}
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func trimSpace(str string) string {
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i := 0
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for i < len(str) && isSpace(str[i]) {
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i += 1
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}
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return str[i:]
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}
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func getTripleComponent(str string) (head, tail string) {
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if len(str) == 0 {
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return "", str
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}
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if str[0] == '<' {
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return getUriPart(str[1:])
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} else if str[0] == '"' {
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return getQuotedPart(str[1:])
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} else if str[0] == '.' {
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return "", str
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} else {
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// Technically not part of the spec. But we do it anyway for convenience.
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return getUnquotedPart(str)
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}
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}
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func getUriPart(str string) (head, tail string) {
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i := 0
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for i < len(str) && str[i] != '>' {
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i += 1
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}
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if i == len(str) {
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return "", str
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}
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head = str[0:i]
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return head, str[i+1:]
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}
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func getQuotedPart(str string) (head, tail string) {
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var (
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i int
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start int
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)
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for i < len(str) && str[i] != '"' {
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if str[i] == '\\' {
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head += str[start:i]
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switch str[i+1] {
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case '\\':
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head += "\\"
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case 'r':
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head += "\r"
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case 'n':
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head += "\n"
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case 't':
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head += "\t"
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case '"':
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head += "\""
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default:
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return "", str
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}
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i += 2
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start = i
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continue
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}
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i += 1
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}
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if i == len(str) {
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return "", str
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}
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head += str[start:i]
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i += 1
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switch {
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case strings.HasPrefix(str[i:], "^^<"):
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// Ignore type, for now
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_, tail = getUriPart(str[i+3:])
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case str[i] == '@':
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_, tail = getUnquotedPart(str[i+1:])
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default:
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tail = str[i:]
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}
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return head, tail
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}
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func getUnquotedPart(str string) (head, tail string) {
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var (
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i int
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initStr = str
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start int
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)
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for i < len(str) && !isSpace(str[i]) {
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if str[i] == '"' {
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part, remainder := getQuotedPart(str[i+1:])
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if part == "" {
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return part, initStr
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}
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head += str[start:i]
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str = remainder
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i = 0
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start = 0
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head += part
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}
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i += 1
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}
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head += str[start:i]
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return head, str[i:]
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return &t, nil
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}
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type Decoder struct {
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@ -27,93 +27,330 @@ var testNTriples = []struct {
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expect *graph.Triple
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err error
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}{
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// NTriple tests.
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// Tests taken from http://www.w3.org/TR/n-quads/ and http://www.w3.org/TR/n-triples/.
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// N-Triples example 1.
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{
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message: "not parse invalid triples",
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input: "invalid",
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expect: nil,
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err: ErrAbsentPredicate,
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message: "parse triple with commment",
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input: `<http://one.example/subject1> <http://one.example/predicate1> <http://one.example/object1> . # comments here`,
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expect: &graph.Triple{
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Subject: "<http://one.example/subject1>",
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Predicate: "<http://one.example/predicate1>",
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Object: "<http://one.example/object1>",
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Provenance: "",
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},
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err: nil,
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},
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{
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message: "invalid internal quote",
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input: `":103032" "/film/performance/character" "Walter "Teacher" Cole" .`,
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expect: nil,
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err: ErrUnterminated,
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message: "parse triple with blank subject node, literal object and no comment (1)",
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input: `_:subject1 <http://an.example/predicate1> "object1" .`,
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expect: &graph.Triple{
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Subject: "_:subject1",
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Predicate: "<http://an.example/predicate1>",
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Object: `"object1"`,
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Provenance: "",
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},
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err: nil,
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},
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{
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message: "not parse comments",
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input: "# nominally valid triple .",
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expect: nil,
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err: nil,
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},
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{
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message: "parse simple triples",
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input: "this is valid .",
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expect: &graph.Triple{"this", "is", "valid", ""},
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},
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{
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message: "parse quoted triples",
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input: `this is "valid too" .`,
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expect: &graph.Triple{"this", "is", "valid too", ""},
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},
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{
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message: "parse escaped quoted triples",
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input: `he said "\"That's all folks\"" .`,
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expect: &graph.Triple{"he", "said", `"That's all folks"`, ""},
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},
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{
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message: "parse an example real triple",
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input: `":/guid/9202a8c04000641f80000000010c843c" "name" "George Morris" .`,
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expect: &graph.Triple{":/guid/9202a8c04000641f80000000010c843c", "name", "George Morris", ""},
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},
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{
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message: "parse a pathologically spaced triple",
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input: "foo is \"\\tA big tough\\r\\nDeal\\\\\" .",
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expect: &graph.Triple{"foo", "is", "\tA big tough\r\nDeal\\", ""},
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message: "parse triple with blank subject node, literal object and no comment (2)",
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input: `_:subject2 <http://an.example/predicate2> "object2" .`,
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expect: &graph.Triple{
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Subject: "_:subject2",
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Predicate: "<http://an.example/predicate2>",
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Object: `"object2"`,
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Provenance: "",
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},
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err: nil,
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},
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// NQuad tests.
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// N-Triples example 2.
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{
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message: "parse a simple quad",
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input: "this is valid quad .",
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expect: &graph.Triple{"this", "is", "valid", "quad"},
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},
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{
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message: "parse a quoted quad",
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input: `this is valid "quad thing" .`,
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expect: &graph.Triple{"this", "is", "valid", "quad thing"},
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},
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{
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message: "parse crazy escaped quads",
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input: `"\"this" "\"is" "\"valid" "\"quad thing".`,
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expect: &graph.Triple{`"this`, `"is`, `"valid`, `"quad thing`},
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message: "parse triple with three IRIREFs",
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input: `<http://example.org/#spiderman> <http://www.perceive.net/schemas/relationship/enemyOf> <http://example.org/#green-goblin> .`,
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expect: &graph.Triple{
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Subject: "<http://example.org/#spiderman>",
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Predicate: "<http://www.perceive.net/schemas/relationship/enemyOf>",
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Object: "<http://example.org/#green-goblin>",
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Provenance: "",
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},
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err: nil,
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},
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// NTriple official tests.
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// N-Triples example 3.
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{
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message: "handle simple case with comments",
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input: "<http://example/s> <http://example/p> <http://example/o> . # comment",
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expect: &graph.Triple{"http://example/s", "http://example/p", "http://example/o", ""},
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message: "parse triple with blank node labelled subject and object and IRIREF predicate (1)",
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input: `_:alice <http://xmlns.com/foaf/0.1/knows> _:bob .`,
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expect: &graph.Triple{
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Subject: "_:alice",
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Predicate: "<http://xmlns.com/foaf/0.1/knows>",
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Object: "_:bob",
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Provenance: "",
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},
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err: nil,
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},
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{
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message: "handle simple case with comments",
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input: "<http://example/s> <http://example/p> _:o . # comment",
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expect: &graph.Triple{"http://example/s", "http://example/p", "_:o", ""},
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message: "parse triple with blank node labelled subject and object and IRIREF predicate (2)",
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input: `_:bob <http://xmlns.com/foaf/0.1/knows> _:alice .`,
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expect: &graph.Triple{
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Subject: "_:bob",
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Predicate: "<http://xmlns.com/foaf/0.1/knows>",
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Object: "_:alice",
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Provenance: "",
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},
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err: nil,
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},
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// N-Quads example 1.
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{
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message: "parse quad with commment",
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input: `<http://one.example/subject1> <http://one.example/predicate1> <http://one.example/object1> <http://example.org/graph3> . # comments here`,
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expect: &graph.Triple{
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Subject: "<http://one.example/subject1>",
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Predicate: "<http://one.example/predicate1>",
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Object: "<http://one.example/object1>",
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Provenance: "<http://example.org/graph3>",
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},
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err: nil,
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},
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{
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message: "handle simple case with comments",
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input: "<http://example/s> <http://example/p> \"o\" . # comment",
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expect: &graph.Triple{"http://example/s", "http://example/p", "o", ""},
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message: "parse quad with blank subject node, literal object, IRIREF predicate and label, and no comment (1)",
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input: `_:subject1 <http://an.example/predicate1> "object1" <http://example.org/graph1> .`,
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expect: &graph.Triple{
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Subject: "_:subject1",
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Predicate: "<http://an.example/predicate1>",
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Object: `"object1"`,
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Provenance: "<http://example.org/graph1>",
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},
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err: nil,
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},
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{
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message: "handle simple case with comments",
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input: "<http://example/s> <http://example/p> \"o\"^^<http://example/dt> . # comment",
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expect: &graph.Triple{"http://example/s", "http://example/p", "o", ""},
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message: "parse quad with blank subject node, literal object, IRIREF predicate and label, and no comment (2)",
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input: `_:subject2 <http://an.example/predicate2> "object2" <http://example.org/graph5> .`,
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expect: &graph.Triple{
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Subject: "_:subject2",
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Predicate: "<http://an.example/predicate2>",
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Object: `"object2"`,
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Provenance: "<http://example.org/graph5>",
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},
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err: nil,
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},
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// N-Quads example 2.
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{
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message: "parse quad with all IRIREF parts",
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input: `<http://example.org/#spiderman> <http://www.perceive.net/schemas/relationship/enemyOf> <http://example.org/#green-goblin> <http://example.org/graphs/spiderman> .`,
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expect: &graph.Triple{
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Subject: "<http://example.org/#spiderman>",
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Predicate: "<http://www.perceive.net/schemas/relationship/enemyOf>",
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Object: "<http://example.org/#green-goblin>",
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Provenance: "<http://example.org/graphs/spiderman>",
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},
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err: nil,
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},
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// N-Quads example 3.
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{
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message: "parse quad with blank node labelled subject and object and IRIREF predicate and label (1)",
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input: `_:alice <http://xmlns.com/foaf/0.1/knows> _:bob <http://example.org/graphs/john> .`,
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expect: &graph.Triple{
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Subject: "_:alice",
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Predicate: "<http://xmlns.com/foaf/0.1/knows>",
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Object: "_:bob",
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Provenance: "<http://example.org/graphs/john>",
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},
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err: nil,
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},
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{
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message: "handle simple case with comments",
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input: "<http://example/s> <http://example/p> \"o\"@en . # comment",
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expect: &graph.Triple{"http://example/s", "http://example/p", "o", ""},
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message: "parse quad with blank node labelled subject and object and IRIREF predicate and label (2)",
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input: `_:bob <http://xmlns.com/foaf/0.1/knows> _:alice <http://example.org/graphs/james> .`,
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expect: &graph.Triple{
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Subject: "_:bob",
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Predicate: "<http://xmlns.com/foaf/0.1/knows>",
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Object: "_:alice",
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Provenance: "<http://example.org/graphs/james>",
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},
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err: nil,
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},
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// N-Triples tests.
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{
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message: "parse triple with all IRIREF parts",
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input: `<http://example.org/bob#me> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://xmlns.com/foaf/0.1/Person> .`,
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expect: &graph.Triple{
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Subject: "<http://example.org/bob#me>",
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Predicate: "<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>",
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Object: "<http://xmlns.com/foaf/0.1/Person>",
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Provenance: "",
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},
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err: nil,
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},
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{
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message: "parse triple with all IRIREF parts",
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input: `<http://example.org/bob#me> <http://xmlns.com/foaf/0.1/knows> <http://example.org/alice#me> .`,
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expect: &graph.Triple{
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Subject: "<http://example.org/bob#me>",
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Predicate: "<http://xmlns.com/foaf/0.1/knows>",
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Object: "<http://example.org/alice#me>",
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Provenance: "",
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},
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err: nil,
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},
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{
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message: "parse triple with IRIREF schema on literal object",
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input: `<http://example.org/bob#me> <http://schema.org/birthDate> "1990-07-04"^^<http://www.w3.org/2001/XMLSchema#date> .`,
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expect: &graph.Triple{
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Subject: "<http://example.org/bob#me>",
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Predicate: "<http://schema.org/birthDate>",
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Object: `"1990-07-04"^^<http://www.w3.org/2001/XMLSchema#date>`,
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Provenance: "",
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},
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err: nil,
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},
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{
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message: "parse commented IRIREF in triple",
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input: `<http://example.org/bob#me> <http://xmlns.com/foaf/0.1/topic_interest> <http://www.wikidata.org/entity/Q12418> .`,
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expect: &graph.Triple{
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Subject: "<http://example.org/bob#me>",
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Predicate: "<http://xmlns.com/foaf/0.1/topic_interest>",
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Object: "<http://www.wikidata.org/entity/Q12418>",
|
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Provenance: "",
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},
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err: nil,
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},
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{
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message: "parse triple with literal subject",
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input: `<http://www.wikidata.org/entity/Q12418> <http://purl.org/dc/terms/title> "Mona Lisa" .`,
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expect: &graph.Triple{
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Subject: "<http://www.wikidata.org/entity/Q12418>",
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Predicate: "<http://purl.org/dc/terms/title>",
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Object: `"Mona Lisa"`,
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Provenance: "",
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},
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err: nil,
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},
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{
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message: "parse triple with all IRIREF parts (1)",
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input: `<http://www.wikidata.org/entity/Q12418> <http://purl.org/dc/terms/creator> <http://dbpedia.org/resource/Leonardo_da_Vinci> .`,
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expect: &graph.Triple{
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Subject: "<http://www.wikidata.org/entity/Q12418>",
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Predicate: "<http://purl.org/dc/terms/creator>",
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Object: "<http://dbpedia.org/resource/Leonardo_da_Vinci>",
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Provenance: "",
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},
|
||||
err: nil,
|
||||
},
|
||||
{
|
||||
message: "parse triple with all IRIREF parts (2)",
|
||||
input: `<http://data.europeana.eu/item/04802/243FA8618938F4117025F17A8B813C5F9AA4D619> <http://purl.org/dc/terms/subject> <http://www.wikidata.org/entity/Q12418> .`,
|
||||
expect: &graph.Triple{
|
||||
Subject: "<http://data.europeana.eu/item/04802/243FA8618938F4117025F17A8B813C5F9AA4D619>",
|
||||
Predicate: "<http://purl.org/dc/terms/subject>",
|
||||
Object: "<http://www.wikidata.org/entity/Q12418>",
|
||||
Provenance: "",
|
||||
},
|
||||
err: nil,
|
||||
},
|
||||
|
||||
// N-Quads tests.
|
||||
{
|
||||
message: "parse commented IRIREF in quad (1)",
|
||||
input: `<http://example.org/bob#me> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://xmlns.com/foaf/0.1/Person> <http://example.org/bob> .`,
|
||||
expect: &graph.Triple{
|
||||
Subject: "<http://example.org/bob#me>",
|
||||
Predicate: "<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>",
|
||||
Object: "<http://xmlns.com/foaf/0.1/Person>",
|
||||
Provenance: "<http://example.org/bob>",
|
||||
},
|
||||
err: nil,
|
||||
},
|
||||
{
|
||||
message: "parse quad with all IRIREF parts",
|
||||
input: `<http://example.org/bob#me> <http://xmlns.com/foaf/0.1/knows> <http://example.org/alice#me> <http://example.org/bob> .`,
|
||||
expect: &graph.Triple{
|
||||
Subject: "<http://example.org/bob#me>",
|
||||
Predicate: "<http://xmlns.com/foaf/0.1/knows>",
|
||||
Object: "<http://example.org/alice#me>",
|
||||
Provenance: "<http://example.org/bob>",
|
||||
},
|
||||
err: nil,
|
||||
},
|
||||
{
|
||||
message: "parse quad with IRIREF schema on literal object",
|
||||
input: `<http://example.org/bob#me> <http://schema.org/birthDate> "1990-07-04"^^<http://www.w3.org/2001/XMLSchema#date> <http://example.org/bob> .`,
|
||||
expect: &graph.Triple{
|
||||
Subject: "<http://example.org/bob#me>",
|
||||
Predicate: "<http://schema.org/birthDate>",
|
||||
Object: `"1990-07-04"^^<http://www.w3.org/2001/XMLSchema#date>`,
|
||||
Provenance: "<http://example.org/bob>",
|
||||
},
|
||||
err: nil,
|
||||
},
|
||||
{
|
||||
message: "parse commented IRIREF in quad (2)",
|
||||
input: `<http://example.org/bob#me> <http://xmlns.com/foaf/0.1/topic_interest> <http://www.wikidata.org/entity/Q12418> <http://example.org/bob> .`,
|
||||
expect: &graph.Triple{
|
||||
Subject: "<http://example.org/bob#me>",
|
||||
Predicate: "<http://xmlns.com/foaf/0.1/topic_interest>",
|
||||
Object: "<http://www.wikidata.org/entity/Q12418>",
|
||||
Provenance: "<http://example.org/bob>",
|
||||
},
|
||||
err: nil,
|
||||
},
|
||||
{
|
||||
message: "parse literal object and colon qualified label in quad",
|
||||
input: `<http://www.wikidata.org/entity/Q12418> <http://purl.org/dc/terms/title> "Mona Lisa" <https://www.wikidata.org/wiki/Special:EntityData/Q12418> .`,
|
||||
expect: &graph.Triple{
|
||||
Subject: "<http://www.wikidata.org/entity/Q12418>",
|
||||
Predicate: "<http://purl.org/dc/terms/title>",
|
||||
Object: `"Mona Lisa"`,
|
||||
Provenance: "<https://www.wikidata.org/wiki/Special:EntityData/Q12418>",
|
||||
},
|
||||
err: nil,
|
||||
},
|
||||
{
|
||||
message: "parse all IRIREF parts with colon qualified label in quad (1)",
|
||||
input: `<http://www.wikidata.org/entity/Q12418> <http://purl.org/dc/terms/creator> <http://dbpedia.org/resource/Leonardo_da_Vinci> <https://www.wikidata.org/wiki/Special:EntityData/Q12418> .`,
|
||||
expect: &graph.Triple{
|
||||
Subject: "<http://www.wikidata.org/entity/Q12418>",
|
||||
Predicate: "<http://purl.org/dc/terms/creator>",
|
||||
Object: "<http://dbpedia.org/resource/Leonardo_da_Vinci>",
|
||||
Provenance: "<https://www.wikidata.org/wiki/Special:EntityData/Q12418>",
|
||||
},
|
||||
err: nil,
|
||||
},
|
||||
{
|
||||
message: "parse all IRIREF parts with colon qualified label in quad (2)",
|
||||
input: `<http://data.europeana.eu/item/04802/243FA8618938F4117025F17A8B813C5F9AA4D619> <http://purl.org/dc/terms/subject> <http://www.wikidata.org/entity/Q12418> <https://www.wikidata.org/wiki/Special:EntityData/Q12418> .`,
|
||||
expect: &graph.Triple{
|
||||
Subject: "<http://data.europeana.eu/item/04802/243FA8618938F4117025F17A8B813C5F9AA4D619>",
|
||||
Predicate: "<http://purl.org/dc/terms/subject>",
|
||||
Object: "<http://www.wikidata.org/entity/Q12418>",
|
||||
Provenance: "<https://www.wikidata.org/wiki/Special:EntityData/Q12418>",
|
||||
},
|
||||
err: nil,
|
||||
},
|
||||
{
|
||||
message: "parse all IRIREF parts (quad section - 1)",
|
||||
input: `<http://example.org/bob> <http://purl.org/dc/terms/publisher> <http://example.org> .`,
|
||||
expect: &graph.Triple{
|
||||
Subject: "<http://example.org/bob>",
|
||||
Predicate: "<http://purl.org/dc/terms/publisher>",
|
||||
Object: "<http://example.org>",
|
||||
Provenance: "",
|
||||
},
|
||||
err: nil,
|
||||
},
|
||||
{
|
||||
message: "parse all IRIREF parts (quad section - 2)",
|
||||
input: `<http://example.org/bob> <http://purl.org/dc/terms/rights> <http://creativecommons.org/licenses/by/3.0/> .`,
|
||||
expect: &graph.Triple{
|
||||
Subject: "<http://example.org/bob>",
|
||||
Predicate: "<http://purl.org/dc/terms/rights>",
|
||||
Object: "<http://creativecommons.org/licenses/by/3.0/>",
|
||||
Provenance: "",
|
||||
},
|
||||
err: nil,
|
||||
},
|
||||
}
|
||||
|
||||
|
|
|
|||
3007
nquads/parse.go
Normal file
3007
nquads/parse.go
Normal file
File diff suppressed because it is too large
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Add table
Add a link
Reference in a new issue