83 lines
1.8 KiB
Ragel
83 lines
1.8 KiB
Ragel
// Copyright 2014 The Cayley Authors. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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%%{
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machine quads;
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action Escape {
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isEscaped = true
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}
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action StartSubject {
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subject = p
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}
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action StartPredicate {
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predicate = p
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}
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action StartObject {
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object = p
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}
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action StartLabel {
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label = p
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}
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action SetSubject {
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if subject < 0 {
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panic("unexpected parser state: subject start not set")
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}
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triple.Subject = unEscape(data[subject:p], isEscaped)
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isEscaped = false
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}
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action SetPredicate {
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if predicate < 0 {
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panic("unexpected parser state: predicate start not set")
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}
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triple.Predicate = unEscape(data[predicate:p], isEscaped)
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isEscaped = false
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}
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action SetObject {
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if object < 0 {
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panic("unexpected parser state: object start not set")
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}
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triple.Object = unEscape(data[object:p], isEscaped)
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isEscaped = false
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}
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action SetLabel {
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if label < 0 {
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panic("unexpected parser state: label start not set")
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}
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triple.Provenance = unEscape(data[label:p], isEscaped)
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isEscaped = false
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}
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action Return {
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return triple, nil
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}
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action Comment {
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}
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action Error {
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if p < len(data) {
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return graph.Triple{}, fmt.Errorf("%v: unexpected rune %q at %d", ErrInvalid, data[p], p)
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}
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return graph.Triple{}, ErrIncomplete
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}
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}%%
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