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| author | chriseth <chris@ethereum.org> | 2017-09-21 22:56:16 +0800 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2017-09-21 22:56:16 +0800 |
| commit | bdeb9e52a2211510644fb53df93fb98258b40a65 (patch) | |
| tree | d8fb917e7dc27b937cb4505029bbc3c8c1bc1a67 /libsolidity/codegen/CompilerUtils.h | |
| parent | d7661dd97460250b4e1127b9e7ea91e116143780 (diff) | |
| parent | a14fc5ffa1f03d5aa312396a39633d720b04c90a (diff) | |
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Merge pull request #2947 from ethereum/develop
Merge develop into release for 0.4.17.
Diffstat (limited to 'libsolidity/codegen/CompilerUtils.h')
| -rw-r--r-- | libsolidity/codegen/CompilerUtils.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/libsolidity/codegen/CompilerUtils.h b/libsolidity/codegen/CompilerUtils.h index 18b70250..5e45699b 100644 --- a/libsolidity/codegen/CompilerUtils.h +++ b/libsolidity/codegen/CompilerUtils.h @@ -38,14 +38,20 @@ public: /// Stores the initial value of the free-memory-pointer at its position; void initialiseFreeMemoryPointer(); /// Copies the free memory pointer to the stack. + /// Stack pre: + /// Stack post: <mem_start> void fetchFreeMemoryPointer(); /// Stores the free memory pointer from the stack. + /// Stack pre: <mem_end> + /// Stack post: void storeFreeMemoryPointer(); /// Allocates a number of bytes in memory as given on the stack. /// Stack pre: <size> /// Stack post: <mem_start> void allocateMemory(); /// Appends code that transforms memptr to (memptr - free_memptr) memptr + /// Stack pre: <mem_end> + /// Stack post: <size> <mem_start> void toSizeAfterFreeMemoryPointer(); /// Loads data from memory to the stack. @@ -105,6 +111,8 @@ public: /// Special case of @a encodeToMemory which assumes that everything is padded to words /// and dynamic data is not copied in place (i.e. a proper ABI encoding). + /// Stack pre: <value0> <value1> ... <valueN-1> <head_start> + /// Stack post: <mem_ptr> void abiEncode( TypePointers const& _givenTypes, TypePointers const& _targetTypes, @@ -185,9 +193,13 @@ public: static unsigned sizeOnStack(std::vector<std::shared_ptr<Type const>> const& _variableTypes); /// Helper function to shift top value on the stack to the left. + /// Stack pre: <value> <shift_by_bits> + /// Stack post: <shifted_value> void leftShiftNumberOnStack(unsigned _bits); /// Helper function to shift top value on the stack to the right. + /// Stack pre: <value> <shift_by_bits> + /// Stack post: <shifted_value> void rightShiftNumberOnStack(unsigned _bits, bool _isSigned = false); /// Appends code that computes tha Keccak-256 hash of the topmost stack element of 32 byte type. |