From 767ec1d670808cd479ac74780bff51a1f1900f04 Mon Sep 17 00:00:00 2001
From: Alex Beregszaszi <alex@rtfs.hu>
Date: Thu, 1 Dec 2016 12:12:10 +0000
Subject: Support explicit conversion of external function type to address

---
 libsolidity/ast/Types.cpp | 11 +++++++++++
 libsolidity/ast/Types.h   |  1 +
 2 files changed, 12 insertions(+)

(limited to 'libsolidity/ast')

diff --git a/libsolidity/ast/Types.cpp b/libsolidity/ast/Types.cpp
index dbabc8db..4a64b4c8 100644
--- a/libsolidity/ast/Types.cpp
+++ b/libsolidity/ast/Types.cpp
@@ -2158,6 +2158,17 @@ bool FunctionType::operator==(Type const& _other) const
 	return true;
 }
 
+bool FunctionType::isExplicitlyConvertibleTo(Type const& _convertTo) const
+{
+	if (m_location == Location::External && _convertTo.category() == Category::Integer)
+	{
+		IntegerType const& convertTo = dynamic_cast<IntegerType const&>(_convertTo);
+		if (convertTo.isAddress())
+			return true;
+	}
+	return _convertTo.category() == category();
+}
+
 TypePointer FunctionType::unaryOperatorResult(Token::Value _operator) const
 {
 	if (_operator == Token::Value::Delete)
diff --git a/libsolidity/ast/Types.h b/libsolidity/ast/Types.h
index a5147f17..3917dca2 100644
--- a/libsolidity/ast/Types.h
+++ b/libsolidity/ast/Types.h
@@ -922,6 +922,7 @@ public:
 
 	virtual std::string identifier() const override;
 	virtual bool operator==(Type const& _other) const override;
+	virtual bool isExplicitlyConvertibleTo(Type const& _convertTo) const override;
 	virtual TypePointer unaryOperatorResult(Token::Value _operator) const override;
 	virtual std::string canonicalName(bool /*_addDataLocation*/) const override;
 	virtual std::string toString(bool _short) const override;
-- 
cgit