mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
122 lines
3.9 KiB
C++
122 lines
3.9 KiB
C++
/*
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This file is part of solidity.
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solidity is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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solidity is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with solidity. If not, see <http://www.gnu.org/licenses/>.
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*/
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// SPDX-License-Identifier: GPL-3.0
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#pragma once
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#include <libsolidity/analysis/TypeChecker.h>
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#include <libsolidity/ast/Types.h>
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#include <libsolidity/ast/ASTAnnotations.h>
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#include <libsolidity/ast/ASTForward.h>
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#include <libsolidity/ast/ASTVisitor.h>
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namespace solidity::langutil
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{
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class ErrorReporter;
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}
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namespace solidity::frontend
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{
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/**
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* The module that performs syntax analysis on the AST:
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* - whether continue/break is in a for/while loop.
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* - whether a modifier contains at least one '_'
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* - issues deprecation warnings for unary '+'
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* - issues deprecation warning for throw
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* - whether the msize instruction is used and the Yul optimizer is enabled at the same time.
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* - selection of the ABI coder through pragmas.
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*/
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class SyntaxChecker: private ASTConstVisitor
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{
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public:
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/// @param _errorReporter provides the error logging functionality.
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SyntaxChecker(langutil::ErrorReporter& _errorReporter, bool _useYulOptimizer):
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m_errorReporter(_errorReporter),
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m_useYulOptimizer(_useYulOptimizer)
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{}
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bool checkSyntax(ASTNode const& _astRoot);
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private:
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bool visit(SourceUnit const& _sourceUnit) override;
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void endVisit(SourceUnit const& _sourceUnit) override;
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bool visit(PragmaDirective const& _pragma) override;
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bool visit(ModifierDefinition const& _modifier) override;
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void endVisit(ModifierDefinition const& _modifier) override;
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/// Reports an error if _statement is a VariableDeclarationStatement.
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/// Used by if/while/for to check for single statement variable declarations
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/// without a block.
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void checkSingleStatementVariableDeclaration(ASTNode const& _statement);
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bool visit(IfStatement const& _ifStatement) override;
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bool visit(WhileStatement const& _whileStatement) override;
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void endVisit(WhileStatement const& _whileStatement) override;
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bool visit(ForStatement const& _forStatement) override;
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void endVisit(ForStatement const& _forStatement) override;
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bool visit(Block const& _block) override;
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void endVisit(Block const& _block) override;
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bool visit(Continue const& _continueStatement) override;
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bool visit(Break const& _breakStatement) override;
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bool visit(Throw const& _throwStatement) override;
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bool visit(UnaryOperation const& _operation) override;
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bool visit(InlineAssembly const& _inlineAssembly) override;
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bool visit(PlaceholderStatement const& _placeholderStatement) override;
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bool visit(ContractDefinition const& _contract) override;
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void endVisit(ContractDefinition const& _contract) override;
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bool visit(UsingForDirective const& _usingFor) override;
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bool visit(FunctionDefinition const& _function) override;
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bool visit(FunctionTypeName const& _node) override;
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bool visit(StructDefinition const& _struct) override;
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bool visit(Literal const& _literal) override;
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bool visitNode(ASTNode const&) override;
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langutil::ErrorReporter& m_errorReporter;
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bool m_useYulOptimizer = false;
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/// Flag that indicates whether a function modifier actually contains '_'.
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bool m_placeholderFound = false;
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/// Flag that indicates whether some version pragma was present.
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bool m_versionPragmaFound = false;
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/// Flag that indicates whether we are inside an unchecked block.
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bool m_uncheckedArithmetic = false;
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int m_inLoopDepth = 0;
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std::optional<ContractKind> m_currentContractKind;
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SourceUnit const* m_sourceUnit = nullptr;
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};
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}
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