From 1e4b5886d61328d951fc03dc88cfc3dd722a3a00 Mon Sep 17 00:00:00 2001
From: Daniel Kirchner <daniel@ekpyron.org>
Date: Fri, 3 Aug 2018 16:22:03 +0200
Subject: Allow assignments to local variables of mapping types.
---
libsolidity/analysis/TypeChecker.cpp | 10 +++++++++-
1 file changed, 9 insertions(+), 1 deletion(-)
(limited to 'libsolidity')
diff --git a/libsolidity/analysis/TypeChecker.cpp b/libsolidity/analysis/TypeChecker.cpp
index f9604794..1d30881c 100644
--- a/libsolidity/analysis/TypeChecker.cpp
+++ b/libsolidity/analysis/TypeChecker.cpp
@@ -1332,7 +1332,15 @@ void TypeChecker::checkExpressionAssignment(Type const& _type, Expression const&
checkExpressionAssignment(_type, *tupleExpression->components().front());
}
else if (_type.category() == Type::Category::Mapping)
- m_errorReporter.typeError(_expression.location(), "Mappings cannot be assigned to.");
+ {
+ bool isLocalOrReturn = false;
+ if (auto const* identifier = dynamic_cast<Identifier const*>(&_expression))
+ if (auto const *variableDeclaration = dynamic_cast<VariableDeclaration const*>(identifier->annotation().referencedDeclaration))
+ if (variableDeclaration->isLocalOrReturn())
+ isLocalOrReturn = true;
+ if (!isLocalOrReturn)
+ m_errorReporter.typeError(_expression.location(), "Mappings cannot be assigned to.");
+ }
}
bool TypeChecker::visit(Assignment const& _assignment)
--
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