| // Copyright 2019 The Amber Authors. |
| // |
| // Licensed 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. |
| |
| #include "src/descriptor_set_and_binding_parser.h" |
| |
| #include <iostream> |
| #include <limits> |
| |
| #include "src/tokenizer.h" |
| |
| namespace amber { |
| |
| DescriptorSetAndBindingParser::DescriptorSetAndBindingParser() = default; |
| |
| DescriptorSetAndBindingParser::~DescriptorSetAndBindingParser() = default; |
| |
| Result DescriptorSetAndBindingParser::Parse(const std::string& buffer_id) { |
| Tokenizer t(buffer_id); |
| auto token = t.NextToken(); |
| if (token->IsInteger()) { |
| if (token->AsInt32() < 0) { |
| return Result( |
| "Descriptor set and binding for a buffer must be non-negative " |
| "integer, but you gave: " + |
| token->ToOriginalString()); |
| } |
| |
| uint32_t val = token->AsUint32(); |
| token = t.NextToken(); |
| if (token->IsEOS() || token->IsEOL()) { |
| descriptor_set_ = 0; |
| binding_ = val; |
| return {}; |
| } |
| |
| descriptor_set_ = val; |
| } else { |
| descriptor_set_ = 0; |
| } |
| |
| if (!token->IsString()) |
| return Result("Invalid buffer id: " + buffer_id); |
| |
| auto& str = token->AsString(); |
| if (str.size() < 2 || str[0] != ':') |
| return Result("Invalid buffer id: " + buffer_id); |
| |
| auto substr = str.substr(1, str.size()); |
| // Validate all characters are integers. |
| for (size_t i = 0; i < substr.size(); ++i) { |
| if (substr[i] < '0' || substr[i] > '9') { |
| return Result( |
| "Binding for a buffer must be non-negative integer, " |
| "but you gave: " + |
| substr); |
| } |
| } |
| |
| uint64_t binding_val = strtoul(substr.c_str(), nullptr, 10); |
| if (binding_val > std::numeric_limits<uint32_t>::max()) |
| return Result("binding value too large in probe ssbo command: " + |
| token->ToOriginalString()); |
| if (static_cast<int32_t>(binding_val) < 0) { |
| return Result( |
| "Binding for a buffer must be non-negative integer, but you gave: " + |
| token->ToOriginalString()); |
| } |
| |
| binding_ = static_cast<uint32_t>(binding_val); |
| return {}; |
| } |
| |
| } // namespace amber |