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+/*
+ This file is part of solidity.
+
+ solidity is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ solidity is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with solidity. If not, see <http://www.gnu.org/licenses/>.
+*/
+/**
+ * Common code generator for translating Julia / inline assembly to EVM and EVM1.5.
+ */
+
+#include <libjulia/backends/evm/AbstractAssembly.h>
+
+#include <libsolidity/interface/Exceptions.h>
+
+#include <libsolidity/inlineasm/AsmStack.h>
+#include <libsolidity/inlineasm/AsmScope.h>
+
+#include <boost/variant.hpp>
+
+namespace dev
+{
+namespace solidity
+{
+namespace assembly
+{
+struct Literal;
+struct Block;
+struct Switch;
+struct Label;
+struct FunctionalInstruction;
+struct Assignment;
+struct VariableDeclaration;
+struct Instruction;
+struct Identifier;
+struct StackAssignment;
+struct FunctionDefinition;
+struct FunctionCall;
+
+struct AsmAnalysisInfo;
+}
+}
+namespace julia
+{
+
+class CodeTransform: public boost::static_visitor<>
+{
+public:
+ /// Create the code transformer which appends assembly to _assembly as a side-effect
+ /// of its creation.
+ /// @param _identifierAccess used to resolve identifiers external to the inline assembly
+ CodeTransform(
+ solidity::ErrorList& _errors,
+ julia::AbstractAssembly& _assembly,
+ solidity::assembly::Block const& _block,
+ solidity::assembly::AsmAnalysisInfo& _analysisInfo,
+ ExternalIdentifierAccess const& _identifierAccess = ExternalIdentifierAccess()
+ ): CodeTransform(_errors, _assembly, _block, _analysisInfo, _identifierAccess, _assembly.stackHeight())
+ {
+ }
+
+private:
+ CodeTransform(
+ solidity::ErrorList& _errors,
+ julia::AbstractAssembly& _assembly,
+ solidity::assembly::Block const& _block,
+ solidity::assembly::AsmAnalysisInfo& _analysisInfo,
+ ExternalIdentifierAccess const& _identifierAccess,
+ int _initialStackHeight
+ );
+
+public:
+ void operator()(solidity::assembly::Instruction const& _instruction);
+ void operator()(solidity::assembly::Literal const& _literal);
+ void operator()(solidity::assembly::Identifier const& _identifier);
+ void operator()(solidity::assembly::FunctionalInstruction const& _instr);
+ void operator()(solidity::assembly::FunctionCall const&);
+ void operator()(solidity::assembly::Label const& _label);
+ void operator()(solidity::assembly::StackAssignment const& _assignment);
+ void operator()(solidity::assembly::Assignment const& _assignment);
+ void operator()(solidity::assembly::VariableDeclaration const& _varDecl);
+ void operator()(solidity::assembly::Block const& _block);
+ void operator()(solidity::assembly::Switch const& _switch);
+ void operator()(solidity::assembly::FunctionDefinition const&);
+
+private:
+ void generateAssignment(solidity::assembly::Identifier const& _variableName, SourceLocation const& _location);
+
+ /// Determines the stack height difference to the given variables. Automatically generates
+ /// errors if it is not yet in scope or the height difference is too large. Returns 0 on
+ /// errors and the (positive) stack height difference otherwise.
+ int variableHeightDiff(solidity::assembly::Scope::Variable const& _var, SourceLocation const& _location, bool _forSwap);
+
+ void expectDeposit(int _deposit, int _oldHeight);
+
+ void checkStackHeight(void const* _astElement);
+
+ /// Assigns the label's id to a value taken from eth::Assembly if it has not yet been set.
+ void assignLabelIdIfUnset(solidity::assembly::Scope::Label& _label);
+
+ solidity::ErrorList& m_errors;
+ julia::AbstractAssembly& m_assembly;
+ solidity::assembly::AsmAnalysisInfo& m_info;
+ solidity::assembly::Scope& m_scope;
+ ExternalIdentifierAccess m_identifierAccess;
+ int const m_initialStackHeight;
+};
+
+}
+}