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Use .slot and .offest to access storage items.

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This commit is contained in:
chriseth
2020-07-13 14:59:22 +02:00
parent 8eee3ed3a2
commit fc2e9ec2ff
60 changed files with 158 additions and 133 deletions
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libsolidity/analysis/ReferencesResolver.cpp
+23 -18
View File
@@ -33,6 +33,7 @@
#include <liblangutil/Exceptions.h>
#include <libsolutil/StringUtils.h>
#include <libsolutil/CommonData.h>
#include <boost/algorithm/string.hpp>
@@ -195,9 +196,10 @@ void ReferencesResolver::operator()(yul::FunctionDefinition const& _function)
void ReferencesResolver::operator()(yul::Identifier const& _identifier)
{
bool isSlot = boost::algorithm::ends_with(_identifier.name.str(), "_slot");
bool isOffset = boost::algorithm::ends_with(_identifier.name.str(), "_offset");
bool isSlot = boost::algorithm::ends_with(_identifier.name.str(), ".slot");
bool isOffset = boost::algorithm::ends_with(_identifier.name.str(), ".offset");
// Could also use `pathFromCurrentScope`, split by '.'
auto declarations = m_resolver.nameFromCurrentScope(_identifier.name.str());
if (isSlot || isOffset)
{
@@ -207,19 +209,22 @@ void ReferencesResolver::operator()(yul::Identifier const& _identifier)
return;
string realName = _identifier.name.str().substr(0, _identifier.name.str().size() - (
isSlot ?
string("_slot").size() :
string("_offset").size()
string(".slot").size() :
string(".offset").size()
));
if (realName.empty())
{
m_errorReporter.declarationError(
4794_error,
_identifier.location,
"In variable names _slot and _offset can only be used as a suffix."
"In variable names .slot and .offset can only be used as a suffix."
);
return;
}
declarations = m_resolver.nameFromCurrentScope(realName);
if (!declarations.empty())
// To support proper path resolution, we have to use pathFromCurrentScope.
solAssert(!util::contains(realName, '.'), "");
}
if (declarations.size() > 1)
{
@@ -231,7 +236,18 @@ void ReferencesResolver::operator()(yul::Identifier const& _identifier)
return;
}
else if (declarations.size() == 0)
{
if (
boost::algorithm::ends_with(_identifier.name.str(), "_slot") ||
boost::algorithm::ends_with(_identifier.name.str(), "_offset")
)
m_errorReporter.declarationError(
9467_error,
_identifier.location,
"Identifier not found. Use ``.slot`` and ``.offset`` to access storage variables."
);
return;
}
if (auto var = dynamic_cast<VariableDeclaration const*>(declarations.front()))
if (var->isLocalVariable() && m_yulInsideFunction)
{
@@ -254,18 +270,9 @@ void ReferencesResolver::operator()(yul::VariableDeclaration const& _varDecl)
{
validateYulIdentifierName(identifier.name, identifier.location);
bool isSlot = boost::algorithm::ends_with(identifier.name.str(), "_slot");
bool isOffset = boost::algorithm::ends_with(identifier.name.str(), "_offset");
string namePrefix = identifier.name.str().substr(0, identifier.name.str().find('.'));
if (isSlot || isOffset)
m_errorReporter.declarationError(
9155_error,
identifier.location,
"In variable declarations _slot and _offset can not be used as a suffix."
);
else if (
auto declarations = m_resolver.nameFromCurrentScope(namePrefix);
if (
auto declarations = m_resolver.nameFromCurrentScope(identifier.name.str());
!declarations.empty()
)
{
@@ -277,8 +284,6 @@ void ReferencesResolver::operator()(yul::VariableDeclaration const& _varDecl)
3859_error,
identifier.location,
ssl,
namePrefix.size() < identifier.name.str().size() ?
"The prefix of this declaration conflicts with a declaration outside the inline assembly block." :
"This declaration shadows a declaration outside the inline assembly block."
);
}
libsolidity/analysis/TypeChecker.cpp
+6 -6
View File
@@ -767,7 +767,7 @@ bool TypeChecker::visit(InlineAssembly const& _inlineAssembly)
}
else if (requiresStorage)
{
m_errorReporter.typeError(6617_error, _identifier.location, "The suffixes _offset and _slot can only be used on non-constant storage variables.");
m_errorReporter.typeError(6617_error, _identifier.location, "The suffixes .offset and .slot can only be used on non-constant storage variables.");
return false;
}
else if (var && var->value() && !var->value()->annotation().type && !dynamic_cast<Literal const*>(var->value().get()))
@@ -795,7 +795,7 @@ bool TypeChecker::visit(InlineAssembly const& _inlineAssembly)
{
if (!var->isStateVariable() && !var->type()->dataStoredIn(DataLocation::Storage))
{
m_errorReporter.typeError(3622_error, _identifier.location, "The suffixes _offset and _slot can only be used on storage variables.");
m_errorReporter.typeError(3622_error, _identifier.location, "The suffixes .offset and .slot can only be used on storage variables.");
return false;
}
else if (_context == yul::IdentifierContext::LValue)
@@ -807,7 +807,7 @@ bool TypeChecker::visit(InlineAssembly const& _inlineAssembly)
}
else if (identifierInfo.isOffset)
{
m_errorReporter.typeError(9739_error, _identifier.location, "Only _slot can be assigned to.");
m_errorReporter.typeError(9739_error, _identifier.location, "Only .slot can be assigned to.");
return false;
}
else
@@ -816,12 +816,12 @@ bool TypeChecker::visit(InlineAssembly const& _inlineAssembly)
}
else if (!var->isConstant() && var->isStateVariable())
{
m_errorReporter.typeError(1408_error, _identifier.location, "Only local variables are supported. To access storage variables, use the _slot and _offset suffixes.");
m_errorReporter.typeError(1408_error, _identifier.location, "Only local variables are supported. To access storage variables, use the .slot and .offset suffixes.");
return false;
}
else if (var->type()->dataStoredIn(DataLocation::Storage))
{
m_errorReporter.typeError(9068_error, _identifier.location, "You have to use the _slot or _offset suffix to access storage reference variables.");
m_errorReporter.typeError(9068_error, _identifier.location, "You have to use the .slot or .offset suffix to access storage reference variables.");
return false;
}
else if (var->type()->sizeOnStack() != 1)
@@ -835,7 +835,7 @@ bool TypeChecker::visit(InlineAssembly const& _inlineAssembly)
}
else if (requiresStorage)
{
m_errorReporter.typeError(7944_error, _identifier.location, "The suffixes _offset and _slot can only be used on storage variables.");
m_errorReporter.typeError(7944_error, _identifier.location, "The suffixes .offset and .slot can only be used on storage variables.");
return false;
}
else if (_context == yul::IdentifierContext::LValue)