1 // Copyright 2019 The Amber Authors.
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 //
7 //     http://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
14 
15 #ifndef SRC_DESCRIPTOR_SET_AND_BINDING_PARSER_H_
16 #define SRC_DESCRIPTOR_SET_AND_BINDING_PARSER_H_
17 
18 #include <cstdint>
19 #include <string>
20 
21 #include "amber/result.h"
22 
23 namespace amber {
24 
25 /// Class for descriptor set and binding parser.
26 class DescriptorSetAndBindingParser {
27  public:
28   DescriptorSetAndBindingParser();
29   ~DescriptorSetAndBindingParser();
30 
31   /// Run the parser against |buffer_id|. The result is success if the parse
32   /// completes correctly. |buffer_id| must be non-empty string. It must
33   /// be a single non-negative integer or two those integers separated by
34   /// ':'. For example, ":0", "1", and "2:3" are valid strings for |buffer_id|,
35   /// but "", "-4", ":-5", ":", "a", and "b:c" are invalid strings for
36   /// |buffer_id|. The |buffer_id| can be prefixed by the name of a pipeline.
37   Result Parse(const std::string& buffer_id);
38 
39   /// Returns true if a pipeline name was specified
HasPipelineName()40   bool HasPipelineName() const { return !pipeline_name_.empty(); }
PipelineName()41   std::string PipelineName() const { return pipeline_name_; }
42 
43   /// Return descriptor set that is the result of Parse().
GetDescriptorSet()44   uint32_t GetDescriptorSet() const { return descriptor_set_; }
45 
46   /// Return binding that is the result of Parse().
GetBinding()47   uint32_t GetBinding() const { return binding_; }
48 
49  private:
50   std::string pipeline_name_;
51   uint32_t descriptor_set_ = 0;
52   uint32_t binding_ = 0;
53 };
54 
55 }  // namespace amber
56 
57 #endif  // SRC_DESCRIPTOR_SET_AND_BINDING_PARSER_H_
58