diff options
Diffstat (limited to 'libsolidity/codegen/ABIFunctions.h')
| -rw-r--r-- | libsolidity/codegen/ABIFunctions.h | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/libsolidity/codegen/ABIFunctions.h b/libsolidity/codegen/ABIFunctions.h index e61f68bc..855b2a11 100644 --- a/libsolidity/codegen/ABIFunctions.h +++ b/libsolidity/codegen/ABIFunctions.h @@ -66,6 +66,16 @@ public: bool _encodeAsLibraryTypes = false ); + /// @returns name of an assembly function to ABI-decode values of @a _types + /// into memory. If @a _fromMemory is true, decodes from memory instead of + /// from calldata. + /// Can allocate memory. + /// Inputs: <source_offset> <source_end> (layout reversed on stack) + /// Outputs: <value0> <value1> ... <valuen> + /// The values represent stack slots. If a type occupies more or less than one + /// stack slot, it takes exactly that number of values. + std::string tupleDecoder(TypePointers const& _types, bool _fromMemory = false); + /// @returns concatenation of all generated functions. std::string requestedFunctions(); @@ -87,6 +97,10 @@ private: /// for use in the ABI. std::string combineExternalFunctionIdFunction(); + /// @returns a function that splits the address and selector from a single value + /// for use in the ABI. + std::string splitExternalFunctionIdFunction(); + /// @returns the name of the ABI encoding function with the given type /// and queues the generation of the function to the requested functions. /// @param _fromStack if false, the input value was just loaded from storage @@ -146,6 +160,29 @@ private: bool _fromStack ); + /// @returns the name of the ABI decodinf function for the given type + /// and queues the generation of the function to the requested functions. + /// The caller has to ensure that no out of bounds access (at least to the static + /// part) can happen inside this function. + /// @param _fromMemory if decoding from memory instead of from calldata + /// @param _forUseOnStack if the decoded value is stored on stack or in memory. + std::string abiDecodingFunction( + Type const& _Type, + bool _fromMemory, + bool _forUseOnStack + ); + + /// Part of @a abiDecodingFunction for "regular" array types. + std::string abiDecodingFunctionArray(ArrayType const& _type, bool _fromMemory); + /// Part of @a abiDecodingFunction for calldata array types. + std::string abiDecodingFunctionCalldataArray(ArrayType const& _type); + /// Part of @a abiDecodingFunction for byte array types. + std::string abiDecodingFunctionByteArray(ArrayType const& _type, bool _fromMemory); + /// Part of @a abiDecodingFunction for struct types. + std::string abiDecodingFunctionStruct(StructType const& _type, bool _fromMemory); + /// Part of @a abiDecodingFunction for array types. + std::string abiDecodingFunctionFunctionType(FunctionType const& _type, bool _fromMemory, bool _forUseOnStack); + /// @returns a function that copies raw bytes of dynamic length from calldata /// or memory to memory. /// Pads with zeros and might write more than exactly length. @@ -158,6 +195,10 @@ private: std::string roundUpFunction(); std::string arrayLengthFunction(ArrayType const& _type); + /// @returns the name of a function that computes the number of bytes required + /// to store an array in memory given its length (internally encoded, not ABI encoded). + /// The function reverts for too large lengthes. + std::string arrayAllocationSizeFunction(ArrayType const& _type); /// @returns the name of a function that converts a storage slot number /// or a memory pointer to the slot number / memory pointer for the data position of an array /// which is stored in that slot / memory area. @@ -166,6 +207,12 @@ private: /// Only works for memory arrays and storage arrays that store one item per slot. std::string nextArrayElementFunction(ArrayType const& _type); + /// @returns the name of a function that allocates memory. + /// Modifies the "free memory pointer" + /// Arguments: size + /// Return value: pointer + std::string allocationFunction(); + /// Helper function that uses @a _creator to create a function and add it to /// @a m_requestedFunctions if it has not been created yet and returns @a _name in both /// cases. |