diff options
Diffstat (limited to 'libjulia')
| -rw-r--r-- | libjulia/backends/evm/EVMCodeTransform.cpp | 43 | ||||
| -rw-r--r-- | libjulia/backends/evm/EVMCodeTransform.h | 7 |
2 files changed, 27 insertions, 23 deletions
diff --git a/libjulia/backends/evm/EVMCodeTransform.cpp b/libjulia/backends/evm/EVMCodeTransform.cpp index 64e13f94..e313e69c 100644 --- a/libjulia/backends/evm/EVMCodeTransform.cpp +++ b/libjulia/backends/evm/EVMCodeTransform.cpp @@ -33,24 +33,6 @@ using namespace dev::julia; using namespace dev::solidity; using namespace dev::solidity::assembly; -void CodeTransform::run(Block const& _block) -{ - m_scope = m_info.scopes.at(&_block).get(); - - int blockStartStackHeight = m_assembly.stackHeight(); - std::for_each(_block.statements.begin(), _block.statements.end(), boost::apply_visitor(*this)); - - m_assembly.setSourceLocation(_block.location); - - // pop variables - for (size_t i = 0; i < m_scope->numberOfVariables(); ++i) - m_assembly.appendInstruction(solidity::Instruction::POP); - - int deposit = m_assembly.stackHeight() - blockStartStackHeight; - solAssert(deposit == 0, "Invalid stack height at end of block."); - checkStackHeight(&_block); -} - void CodeTransform::operator()(ForLoop const&) { @@ -319,7 +301,7 @@ void CodeTransform::operator()(FunctionDefinition const& _function) } CodeTransform(m_assembly, m_info, m_evm15, m_identifierAccess, localStackAdjustment, m_context) - .run(_function.body); + (_function.body); { // The stack layout here is: @@ -364,7 +346,14 @@ void CodeTransform::operator()(FunctionDefinition const& _function) void CodeTransform::operator()(Block const& _block) { - CodeTransform(m_assembly, m_info, m_evm15, m_identifierAccess, m_stackAdjustment, m_context).run(_block); + Scope* originalScope = m_scope; + m_scope = m_info.scopes.at(&_block).get(); + + int blockStartStackHeight = m_assembly.stackHeight(); + std::for_each(_block.statements.begin(), _block.statements.end(), boost::apply_visitor(*this)); + + finalizeBlock(_block, blockStartStackHeight); + m_scope = originalScope; } AbstractAssembly::LabelID CodeTransform::labelFromIdentifier(Identifier const& _identifier) @@ -405,6 +394,20 @@ void CodeTransform::visitExpression(Statement const& _expression) expectDeposit(1, height); } +void CodeTransform::finalizeBlock(Block const& _block, int blockStartStackHeight) +{ + m_assembly.setSourceLocation(_block.location); + + // pop variables + solAssert(m_info.scopes.at(&_block).get() == m_scope, ""); + for (size_t i = 0; i < m_scope->numberOfVariables(); ++i) + m_assembly.appendInstruction(solidity::Instruction::POP); + + int deposit = m_assembly.stackHeight() - blockStartStackHeight; + solAssert(deposit == 0, "Invalid stack height at end of block."); + checkStackHeight(&_block); +} + void CodeTransform::generateAssignment(Identifier const& _variableName) { solAssert(m_scope, ""); diff --git a/libjulia/backends/evm/EVMCodeTransform.h b/libjulia/backends/evm/EVMCodeTransform.h index 7824247a..57bd4ca5 100644 --- a/libjulia/backends/evm/EVMCodeTransform.h +++ b/libjulia/backends/evm/EVMCodeTransform.h @@ -61,9 +61,6 @@ public: { } - /// Processes the block and appends the resulting code to the assembly. - void run(solidity::assembly::Block const& _block); - protected: struct Context { @@ -113,6 +110,10 @@ private: /// Generates code for an expression that is supposed to return a single value. void visitExpression(solidity::assembly::Statement const& _expression); + /// Pops all variables declared in the block and checks that the stack height is equal + /// to @a _blackStartStackHeight. + void finalizeBlock(solidity::assembly::Block const& _block, int _blockStartStackHeight); + void generateAssignment(solidity::assembly::Identifier const& _variableName); /// Determines the stack height difference to the given variables. Throws |