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Syntax for meta type information.

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This commit is contained in:
chriseth
2019-01-17 20:36:48 +01:00
parent 44237211d1
commit 2fcfb216b5
11 changed files with 116 additions and 14 deletions
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libsolidity/analysis/TypeChecker.cpp
+40
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@@ -199,6 +199,38 @@ TypePointers TypeChecker::typeCheckABIDecodeAndRetrieveReturnType(FunctionCall c
return components;
}
TypePointers TypeChecker::typeCheckMetaTypeFunctionAndRetrieveReturnType(FunctionCall const& _functionCall)
{
vector<ASTPointer<Expression const>> arguments = _functionCall.arguments();
if (arguments.size() != 1)
{
m_errorReporter.typeError(
_functionCall.location(),
"This function takes one argument, but " +
toString(arguments.size()) +
" were provided."
);
return {};
}
TypePointer firstArgType = type(*arguments.front());
if (
firstArgType->category() != Type::Category::TypeType ||
dynamic_cast<TypeType const&>(*firstArgType).actualType()->category() != TypeType::Category::Contract
)
{
m_errorReporter.typeError(
arguments.front()->location(),
"Invalid type for argument in function call. "
"Contract type required, but " +
type(*arguments.front())->toString(true) +
" provided."
);
return {};
}
return {MagicType::metaType(dynamic_cast<TypeType const&>(*firstArgType).actualType())};
}
void TypeChecker::endVisit(InheritanceSpecifier const& _inheritance)
{
auto base = dynamic_cast<ContractDefinition const*>(&dereference(_inheritance.name()));
@@ -1822,6 +1854,9 @@ bool TypeChecker::visit(FunctionCall const& _functionCall)
returnTypes = functionType->returnParameterTypes();
break;
}
case FunctionType::Kind::MetaType:
returnTypes = typeCheckMetaTypeFunctionAndRetrieveReturnType(_functionCall);
break;
default:
{
typeCheckFunctionCall(_functionCall, functionType);
@@ -2062,8 +2097,13 @@ bool TypeChecker::visit(MemberAccess const& _memberAccess)
if (tt->actualType()->category() == Type::Category::Enum)
annotation.isPure = true;
if (auto magicType = dynamic_cast<MagicType const*>(exprType.get()))
{
if (magicType->kind() == MagicType::Kind::ABI)
annotation.isPure = true;
else if (magicType->kind() == MagicType::Kind::MetaType)
if (memberName == "creationCode" || memberName == "runtimeCode")
annotation.isPure = true;
}
return false;
}