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| author | Alex Beregszaszi <alex@rtfs.hu> | 2017-07-05 04:53:05 +0800 |
|---|---|---|
| committer | Alex Beregszaszi <alex@rtfs.hu> | 2018-11-21 23:50:45 +0800 |
| commit | 7c051f1e321a406c1a57870f75106151ad70047b (patch) | |
| tree | 3991f67a382b2b8b0fa1349108a01e6cac840087 /liblll | |
| parent | dcfa5f4ea02f785a0354f145a78f039da25ca485 (diff) | |
| download | dexon-solidity-7c051f1e321a406c1a57870f75106151ad70047b.tar.gz dexon-solidity-7c051f1e321a406c1a57870f75106151ad70047b.tar.zst dexon-solidity-7c051f1e321a406c1a57870f75106151ad70047b.zip | |
LLL: implement WITH keyword
Diffstat (limited to 'liblll')
| -rw-r--r-- | liblll/CodeFragment.cpp | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/liblll/CodeFragment.cpp b/liblll/CodeFragment.cpp index c6ab86f5..b32f14e9 100644 --- a/liblll/CodeFragment.cpp +++ b/liblll/CodeFragment.cpp @@ -285,6 +285,35 @@ void CodeFragment::constructOperation(sp::utree const& _t, CompilerState& _s) m_asm.append((u256)varAddress(firstAsString())); m_asm.append(Instruction::MLOAD); } + else if (us == "WITH") + { + if (_t.size() != 4) + error<IncorrectParameterCount>(); + string key = firstAsString(); + if (_s.vars.find(key) != _s.vars.end()) + error<InvalidName>(string("Symbol already used: ") + key); + + // Create variable + // TODO: move this to be a stack variable (and not a memory variable) + size_t c = 0; + for (auto const& i: _t) + if (c++ == 2) + m_asm.append(CodeFragment(i, _s, m_readFile, false).m_asm); + m_asm.append((u256)varAddress(key, true)); + m_asm.append(Instruction::MSTORE); + + // Insert sub with variable access, but new state + CompilerState ns = _s; + c = 0; + for (auto const& i: _t) + if (c++ == 3) + m_asm.append(CodeFragment(i, _s, m_readFile, false).m_asm); + + // Remove variable + auto it = _s.vars.find(key); + if (it != _s.vars.end()) + _s.vars.erase(it); + } else if (us == "REF") m_asm.append((u256)varAddress(firstAsString())); else if (us == "DEF") |