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| author | Wei-Ning Huang <w@dexon.org> | 2018-10-18 11:38:05 +0800 |
|---|---|---|
| committer | Jimmy Hu <jimmy.hu@dexon.org> | 2018-11-09 13:31:14 +0800 |
| commit | 433aebb7c91acf6d364acd76f6018dc1b4f847af (patch) | |
| tree | 755cb38bb4ec4c873cc86c537200d4cfa1b1b83f /libsolidity | |
| parent | 91c1c3ada94f983f71938fba5abb570207acc248 (diff) | |
| download | dexon-solidity-0.4.25.tar dexon-solidity-0.4.25.tar.gz dexon-solidity-0.4.25.tar.bz2 dexon-solidity-0.4.25.tar.lz dexon-solidity-0.4.25.tar.xz dexon-solidity-0.4.25.tar.zst dexon-solidity-0.4.25.zip | |
Add opcode RAND supportv0.4.25
DEXON has a built-in on chain random oracle that allow one to retrieve a
random variable. Add `rand` solidity variable is introduced to load the
random variable onto the stack.
Diffstat (limited to 'libsolidity')
| -rw-r--r-- | libsolidity/analysis/GlobalContext.cpp | 1 | ||||
| -rw-r--r-- | libsolidity/analysis/ViewPureChecker.cpp | 2 | ||||
| -rw-r--r-- | libsolidity/codegen/ExpressionCompiler.cpp | 8 |
3 files changed, 9 insertions, 2 deletions
diff --git a/libsolidity/analysis/GlobalContext.cpp b/libsolidity/analysis/GlobalContext.cpp index 756bb540..347cf943 100644 --- a/libsolidity/analysis/GlobalContext.cpp +++ b/libsolidity/analysis/GlobalContext.cpp @@ -51,6 +51,7 @@ m_magicVariables(vector<shared_ptr<MagicVariableDeclaration const>>{ make_shared<MagicVariableDeclaration>("msg", make_shared<MagicType>(MagicType::Kind::Message)), make_shared<MagicVariableDeclaration>("mulmod", make_shared<FunctionType>(strings{"uint256", "uint256", "uint256"}, strings{"uint256"}, FunctionType::Kind::MulMod, false, StateMutability::Pure)), make_shared<MagicVariableDeclaration>("now", make_shared<IntegerType>(256)), + make_shared<MagicVariableDeclaration>("rand", make_shared<IntegerType>(256)), make_shared<MagicVariableDeclaration>("require", make_shared<FunctionType>(strings{"bool"}, strings{}, FunctionType::Kind::Require, false, StateMutability::Pure)), make_shared<MagicVariableDeclaration>("require", make_shared<FunctionType>(strings{"bool", "string memory"}, strings{}, FunctionType::Kind::Require, false, StateMutability::Pure)), make_shared<MagicVariableDeclaration>("revert", make_shared<FunctionType>(strings(), strings(), FunctionType::Kind::Revert, false, StateMutability::Pure)), diff --git a/libsolidity/analysis/ViewPureChecker.cpp b/libsolidity/analysis/ViewPureChecker.cpp index d9843012..610ba617 100644 --- a/libsolidity/analysis/ViewPureChecker.cpp +++ b/libsolidity/analysis/ViewPureChecker.cpp @@ -210,7 +210,7 @@ void ViewPureChecker::endVisit(Identifier const& _identifier) mutability = StateMutability::View; break; case Type::Category::Integer: - solAssert(_identifier.name() == "now", ""); + solAssert(_identifier.name() == "now" || _identifier.name() == "rand", ""); mutability = StateMutability::View; break; default: diff --git a/libsolidity/codegen/ExpressionCompiler.cpp b/libsolidity/codegen/ExpressionCompiler.cpp index f38c1e67..0a6ce940 100644 --- a/libsolidity/codegen/ExpressionCompiler.cpp +++ b/libsolidity/codegen/ExpressionCompiler.cpp @@ -1265,6 +1265,8 @@ bool ExpressionCompiler::visit(MemberAccess const& _memberAccess) m_context << Instruction::COINBASE; else if (member == "timestamp") m_context << Instruction::TIMESTAMP; + else if (member == "rand") + m_context << Instruction::RAND; else if (member == "difficulty") m_context << Instruction::DIFFICULTY; else if (member == "number") @@ -1491,7 +1493,11 @@ void ExpressionCompiler::endVisit(Identifier const& _identifier) break; case Type::Category::Integer: // "now" - m_context << Instruction::TIMESTAMP; + if (_identifier.name() == "now") { + m_context << Instruction::TIMESTAMP; + } else if (_identifier.name() == "rand") { + m_context << Instruction::RAND; + } break; default: break; |