text: // Copyright 2017-2019 The Verible 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.
  
  #ifndef VERIBLE_VERILOG_ANALYSIS_CHECKERS_EXPLICIT_TASK_LIFETIME_RULE_H_
  #define VERIBLE_VERILOG_ANALYSIS_CHECKERS_EXPLICIT_TASK_LIFETIME_RULE_H_
  
  #include <string>
  #include <vector>
  
  #include "common/analysis/lint_rule_status.h"
  #include "common/analysis/matcher/matcher.h"
  #include "common/analysis/matcher/matcher_builders.h"
  #include "common/analysis/syntax_tree_lint_rule.h"
  #include "common/text/symbol.h"
  #include "common/text/syntax_tree_context.h"
  #include "verilog/CST/verilog_matchers.h"  // IWYU pragma: keep
  #include "verilog/analysis/descriptions.h"
  
  namespace verilog {
  namespace analysis {
  
  // ExplicitTaskLifetimeRule checks that every task declared outside a
  // class has a lifetime declared of either static or automatic.
  class ExplicitTaskLifetimeRule : public verible::SyntaxTreeLintRule {
   public:
    using rule_type = verible::SyntaxTreeLintRule;
    static absl::string_view Name();
  
    // Returns the description of the rule implemented formatted for either the
    // helper flag or markdown depending on the parameter type.
    static std::string GetDescription(DescriptionType);
  
    void HandleSymbol(const verible::Symbol& symbol,
                      const verible::SyntaxTreeContext& context) override;
  
    verible::LintRuleStatus Report() const override;
  
   private:
    // Link to style guide rule.
    static const char kTopic[];
  
    // Diagnostic message.
    static const char kMessage[];
  
    using Matcher = verible::matcher::Matcher;
  
    Matcher matcher_ = NodekTaskDeclaration();
  
    std::vector<verible::LintViolation> violations_;
  };
  
  }  // namespace analysis
  }  // namespace verilog
  
  #endif  // VERIBLE_VERILOG_ANALYSIS_CHECKERS_EXPLICIT_TASK_LIFETIME_RULE_H_
  