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[Sol->Yul] Implement _slot/_offset suffix for storage variables

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This commit is contained in:
Mathias Baumann 2019-06-20 14:50:39 +02:00
parent fc64de6d90
commit 346c512cd7
1 changed files with 32 additions and 2 deletions
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34
libsolidity/codegen/ir/IRGeneratorForStatements.cpp
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@ -56,6 +56,35 @@ struct CopyTranslate: public yul::ASTCopier
using ASTCopier::operator(); using ASTCopier::operator();
yul::Expression operator()(yul::Identifier const& _identifier) override
{
if (m_references.count(&_identifier))
{
auto const& reference = m_references.at(&_identifier);
auto const varDecl = dynamic_cast<VariableDeclaration const*>(reference.declaration);
solUnimplementedAssert(varDecl, "");
if (reference.isOffset || reference.isSlot)
{
solAssert(reference.isOffset != reference.isSlot, "");
pair<u256, unsigned> slot_offset = m_context.storageLocationOfVariable(*varDecl);
string const value = reference.isSlot ?
slot_offset.first.str() :
to_string(slot_offset.second);
return yul::Literal{
_identifier.location,
yul::LiteralKind::Number,
yul::YulString{value},
yul::YulString{"uint256"}
};
}
}
return ASTCopier::operator()(_identifier);
}
yul::YulString translateIdentifier(yul::YulString _name) override yul::YulString translateIdentifier(yul::YulString _name) override
{ {
// Strictly, the dialect used by inline assembly (m_dialect) could be different // Strictly, the dialect used by inline assembly (m_dialect) could be different
@ -76,9 +105,10 @@ struct CopyTranslate: public yul::ASTCopier
auto const& reference = m_references.at(&_identifier); auto const& reference = m_references.at(&_identifier);
auto const varDecl = dynamic_cast<VariableDeclaration const*>(reference.declaration); auto const varDecl = dynamic_cast<VariableDeclaration const*>(reference.declaration);
solUnimplementedAssert(varDecl, ""); solUnimplementedAssert(varDecl, "");
solUnimplementedAssert(
solAssert(
reference.isOffset == false && reference.isSlot == false, reference.isOffset == false && reference.isSlot == false,
"" "Should not be called for offset/slot"
); );
return yul::Identifier{ return yul::Identifier{