| // Licensed to the Apache Software Foundation (ASF) under one or more |
| // contributor license agreements. See the NOTICE file distributed with |
| // this work for additional information regarding copyright ownership. |
| // The ASF licenses this file to You under the Apache License, Version 2.0 |
| // (the "License"); you may not use this file except in compliance with |
| // the License. You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| package protosource |
| |
| const ( |
| messageRangeInclusiveMax = 536870911 |
| ) |
| |
| type messageRange struct { |
| locationDescriptor |
| |
| message Message |
| start int |
| end int |
| } |
| |
| func newMessageRange( |
| locationDescriptor locationDescriptor, |
| message Message, |
| start int, |
| end int, |
| ) *messageRange { |
| return &messageRange{ |
| locationDescriptor: locationDescriptor, |
| message: message, |
| start: start, |
| // end is exclusive for messages |
| end: end - 1, |
| } |
| } |
| |
| func newFreeMessageRange(message Message, start int, endInclusive int) MessageRange { |
| return newMessageRange( |
| newLocationDescriptor( |
| newDescriptor( |
| message.File(), |
| nil, |
| ), |
| nil, |
| ), |
| message, |
| start, |
| // we expect exclusive for newMessageRange |
| endInclusive+1, |
| ) |
| } |
| |
| func (r *messageRange) Message() Message { |
| return r.message |
| } |
| |
| func (r *messageRange) Start() int { |
| return r.start |
| } |
| |
| func (r *messageRange) End() int { |
| return r.end |
| } |
| |
| func (r *messageRange) Max() bool { |
| return r.end == messageRangeInclusiveMax |
| } |
| |
| type extensionRange struct { |
| *messageRange |
| optionExtensionDescriptor |
| } |
| |
| func newExtensionRange( |
| locationDescriptor locationDescriptor, |
| message Message, |
| start int, |
| end int, |
| opts optionExtensionDescriptor, |
| ) *extensionRange { |
| return &extensionRange{ |
| messageRange: newMessageRange( |
| locationDescriptor, message, start, end, |
| ), |
| optionExtensionDescriptor: opts, |
| } |
| } |