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| author | chriseth <c@ethdev.com> | 2015-11-17 22:15:00 +0800 |
|---|---|---|
| committer | chriseth <c@ethdev.com> | 2015-11-26 20:10:12 +0800 |
| commit | 879844dd0a9137602373c8f67f283a5895913732 (patch) | |
| tree | ea084fcbf268c0a1644f62364c6d9713ed119604 /libsolidity/codegen/CompilerUtils.cpp | |
| parent | bf55aa6ae2b9aeec09bb8cf1e3715afd7dd59b7e (diff) | |
| download | dexon-solidity-879844dd0a9137602373c8f67f283a5895913732.tar.gz dexon-solidity-879844dd0a9137602373c8f67f283a5895913732.tar.zst dexon-solidity-879844dd0a9137602373c8f67f283a5895913732.zip | |
Code generation for creating arrays.
Diffstat (limited to 'libsolidity/codegen/CompilerUtils.cpp')
| -rw-r--r-- | libsolidity/codegen/CompilerUtils.cpp | 24 |
1 files changed, 15 insertions, 9 deletions
diff --git a/libsolidity/codegen/CompilerUtils.cpp b/libsolidity/codegen/CompilerUtils.cpp index 2ebf5b64..357013e6 100644 --- a/libsolidity/codegen/CompilerUtils.cpp +++ b/libsolidity/codegen/CompilerUtils.cpp @@ -266,6 +266,19 @@ void CompilerUtils::encodeToMemory( popStackSlots(argSize + dynPointers + 1); } +void CompilerUtils::zeroInitialiseMemoryArray(ArrayType const& _type) +{ + auto repeat = m_context.newTag(); + m_context << repeat; + pushZeroValue(*_type.baseType()); + storeInMemoryDynamic(*_type.baseType()); + m_context << eth::Instruction::SWAP1 << u256(1) << eth::Instruction::SWAP1; + m_context << eth::Instruction::SUB << eth::Instruction::SWAP1; + m_context << eth::Instruction::DUP2; + m_context.appendConditionalJumpTo(repeat); + m_context << eth::Instruction::SWAP1 << eth::Instruction::POP; +} + void CompilerUtils::memoryCopy() { // Stack here: size target source @@ -646,15 +659,8 @@ void CompilerUtils::pushZeroValue(Type const& _type) { m_context << arrayType->length() << eth::Instruction::SWAP1; // stack: items_to_do memory_pos - auto repeat = m_context.newTag(); - m_context << repeat; - pushZeroValue(*arrayType->baseType()); - storeInMemoryDynamic(*arrayType->baseType()); - m_context << eth::Instruction::SWAP1 << u256(1) << eth::Instruction::SWAP1; - m_context << eth::Instruction::SUB << eth::Instruction::SWAP1; - m_context << eth::Instruction::DUP2; - m_context.appendConditionalJumpTo(repeat); - m_context << eth::Instruction::SWAP1 << eth::Instruction::POP; + zeroInitialiseMemoryArray(*arrayType); + // stack: updated_memory_pos } } else |