diff options
Diffstat (limited to 'libsolidity/codegen/ExpressionCompiler.cpp')
| -rw-r--r-- | libsolidity/codegen/ExpressionCompiler.cpp | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/libsolidity/codegen/ExpressionCompiler.cpp b/libsolidity/codegen/ExpressionCompiler.cpp index bb8c4a94..8e1cf019 100644 --- a/libsolidity/codegen/ExpressionCompiler.cpp +++ b/libsolidity/codegen/ExpressionCompiler.cpp @@ -1014,6 +1014,30 @@ bool ExpressionCompiler::visit(MemberAccess const& _memberAccess) _memberAccess.expression().accept(*this); return false; } + // Another special case for `this.f.selector` which does not need the address. + // There are other uses of `.selector` which do need the address, but we want this + // specific use to be a pure expression. + if ( + _memberAccess.expression().annotation().type->category() == Type::Category::Function && + member == "selector" + ) + if (auto const* expr = dynamic_cast<MemberAccess const*>(&_memberAccess.expression())) + if (auto const* exprInt = dynamic_cast<Identifier const*>(&expr->expression())) + if (exprInt->name() == "this") + if (Declaration const* declaration = expr->annotation().referencedDeclaration) + { + u256 identifier; + if (auto const* variable = dynamic_cast<VariableDeclaration const*>(declaration)) + identifier = FunctionType(*variable).externalIdentifier(); + else if (auto const* function = dynamic_cast<FunctionDefinition const*>(declaration)) + identifier = FunctionType(*function).externalIdentifier(); + else + solAssert(false, "Contract member is neither variable nor function."); + m_context << identifier; + /// need to store store it as bytes4 + utils().leftShiftNumberOnStack(224); + return false; + } _memberAccess.expression().accept(*this); switch (_memberAccess.expression().annotation().type->category()) |