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| author | chriseth <chris@ethereum.org> | 2017-06-24 00:37:15 +0800 |
|---|---|---|
| committer | chriseth <chris@ethereum.org> | 2017-06-26 22:30:36 +0800 |
| commit | f47e6e90fb55066ff602a1448fc2d3f650449559 (patch) | |
| tree | 253a144ad17a27acd3095f1f3dbcb77265026e87 /libsolidity/ast | |
| parent | d2445dfdced2d4e1fccdd873963e02663c0116c1 (diff) | |
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Disallow comparisons between some types.
Diffstat (limited to 'libsolidity/ast')
| -rw-r--r-- | libsolidity/ast/Types.cpp | 10 | ||||
| -rw-r--r-- | libsolidity/ast/Types.h | 9 |
2 files changed, 14 insertions, 5 deletions
diff --git a/libsolidity/ast/Types.cpp b/libsolidity/ast/Types.cpp index bd3346f9..0234f842 100644 --- a/libsolidity/ast/Types.cpp +++ b/libsolidity/ast/Types.cpp @@ -2248,6 +2248,16 @@ TypePointer FunctionType::unaryOperatorResult(Token::Value _operator) const return TypePointer(); } +TypePointer FunctionType::binaryOperatorResult(Token::Value _operator, TypePointer const& _other) const +{ + if (_other->category() != category() || !Token::isCompareOp(_operator)) + return TypePointer(); + FunctionType const& other = dynamic_cast<FunctionType const&>(*_other); + if (kind() == Kind::Internal && other.kind() == Kind::Internal && sizeOnStack() == 1 && other.sizeOnStack() == 1) + return commonType(shared_from_this(), _other); + return TypePointer(); +} + string FunctionType::canonicalName(bool) const { solAssert(m_kind == Kind::External, ""); diff --git a/libsolidity/ast/Types.h b/libsolidity/ast/Types.h index c4ffc44c..f7a73ab5 100644 --- a/libsolidity/ast/Types.h +++ b/libsolidity/ast/Types.h @@ -933,6 +933,7 @@ public: 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 TypePointer binaryOperatorResult(Token::Value, TypePointer const&) const override; virtual std::string canonicalName(bool /*_addDataLocation*/) const override; virtual std::string toString(bool _short) const override; virtual unsigned calldataEncodedSize(bool _padded) const override; @@ -1038,6 +1039,7 @@ public: virtual std::string toString(bool _short) const override; virtual std::string canonicalName(bool _addDataLocation) const override; virtual bool canLiveOutsideStorage() const override { return false; } + virtual TypePointer binaryOperatorResult(Token::Value, TypePointer const&) const override { return TypePointer(); } virtual TypePointer encodingType() const override { return std::make_shared<IntegerType>(256); @@ -1116,11 +1118,7 @@ public: explicit ModuleType(SourceUnit const& _source): m_sourceUnit(_source) {} - virtual TypePointer binaryOperatorResult(Token::Value, TypePointer const&) const override - { - return TypePointer(); - } - + virtual TypePointer binaryOperatorResult(Token::Value, TypePointer const&) const override { return TypePointer(); } virtual std::string identifier() const override; virtual bool operator==(Type const& _other) const override; virtual bool canBeStored() const override { return false; } @@ -1178,6 +1176,7 @@ public: virtual std::string identifier() const override { return "t_inaccessible"; } virtual bool isImplicitlyConvertibleTo(Type const&) const override { return false; } virtual bool isExplicitlyConvertibleTo(Type const&) const override { return false; } + virtual TypePointer binaryOperatorResult(Token::Value, TypePointer const&) const override { return TypePointer(); } virtual unsigned calldataEncodedSize(bool _padded) const override { (void)_padded; return 32; } virtual bool canBeStored() const override { return false; } virtual bool canLiveOutsideStorage() const override { return false; } |