mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
Minor code factoring to clarify for init scope extension
This commit is contained in:
parent
7280ed716a
commit
62e5ccec90
@ -344,62 +344,80 @@ void ProtoConverter::visit(BinaryOp const& _x)
|
||||
m_output << ")";
|
||||
}
|
||||
|
||||
void ProtoConverter::visit(VarDecl const& _x)
|
||||
void ProtoConverter::scopeVariables(vector<string> const& _varNames)
|
||||
{
|
||||
string varName = newVarName();
|
||||
m_output << "let " << varName << " := ";
|
||||
visit(_x.expr());
|
||||
m_output << "\n";
|
||||
// If we are inside a for-init block, there are two places
|
||||
// where the visited vardecl may have been defined:
|
||||
// - directly inside the for-init block
|
||||
// - inside a block within the for-init block
|
||||
// In the latter case, we don't scope extend.
|
||||
// In the latter case, we don't scope extend. The flag
|
||||
// m_forInitScopeExtEnabled (= true) indicates whether we are directly
|
||||
// inside a for-init block e.g., for { let x } or (= false) inside a
|
||||
// nested for-init block e.g., for { { let x } }
|
||||
bool forInitScopeExtendVariable = m_inForInitScope && m_forInitScopeExtEnabled;
|
||||
|
||||
// There are four cases that are tackled here
|
||||
// Case 1. We are inside a function definition and the variable declaration's
|
||||
// scope needs to be extended.
|
||||
// Case 2. We are inside a function definition but scope extension is disabled
|
||||
// Case 3. We are inside global scope and scope extension is required
|
||||
// Case 4. We are inside global scope but scope extension is disabled
|
||||
if (m_inFunctionDef)
|
||||
{
|
||||
// Variables declared directly in for-init block
|
||||
// are tracked separately because their scope
|
||||
// extends beyond the block they are defined in
|
||||
// to the rest of the for-loop statement.
|
||||
if (m_inForInitScope && m_forInitScopeExtEnabled)
|
||||
// Case 1
|
||||
if (forInitScopeExtendVariable)
|
||||
{
|
||||
yulAssert(
|
||||
!m_funcForLoopInitVars.empty() && !m_funcForLoopInitVars.back().empty(),
|
||||
"Proto fuzzer: Invalid operation"
|
||||
);
|
||||
!m_funcForLoopInitVars.empty() && !m_funcForLoopInitVars.back().empty(), "Proto fuzzer: Invalid operation");
|
||||
for (auto const& varName: _varNames)
|
||||
m_funcForLoopInitVars.back().back().push_back(varName);
|
||||
}
|
||||
// Case 2
|
||||
else
|
||||
{
|
||||
yulAssert(
|
||||
!m_funcVars.empty() && !m_funcVars.back().empty(),
|
||||
"Proto fuzzer: Invalid operation"
|
||||
);
|
||||
for (auto const& varName: _varNames)
|
||||
m_funcVars.back().back().push_back(varName);
|
||||
}
|
||||
|
||||
}
|
||||
// If m_inFunctionDef is false, we are in global scope
|
||||
else
|
||||
{
|
||||
if (m_inForInitScope && m_forInitScopeExtEnabled)
|
||||
// Case 3
|
||||
if (forInitScopeExtendVariable)
|
||||
{
|
||||
yulAssert(
|
||||
!m_globalForLoopInitVars.empty(),
|
||||
"Proto fuzzer: Invalid operation"
|
||||
);
|
||||
yulAssert(!m_globalForLoopInitVars.empty(), "Proto fuzzer: Invalid operation");
|
||||
|
||||
for (auto const& varName: _varNames)
|
||||
m_globalForLoopInitVars.back().push_back(varName);
|
||||
}
|
||||
// Case 4
|
||||
else
|
||||
{
|
||||
yulAssert(
|
||||
!m_globalVars.empty(),
|
||||
"Proto fuzzer: Invalid operation"
|
||||
);
|
||||
yulAssert(!m_globalVars.empty(), "Proto fuzzer: Invalid operation");
|
||||
|
||||
for (auto const& varName: _varNames)
|
||||
m_globalVars.back().push_back(varName);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
void ProtoConverter::visit(VarDecl const& _x)
|
||||
{
|
||||
string varName = newVarName();
|
||||
m_output << "let " << varName << " := ";
|
||||
visit(_x.expr());
|
||||
m_output << "\n";
|
||||
scopeVariables({varName});
|
||||
}
|
||||
|
||||
void ProtoConverter::visit(MultiVarDecl const& _x)
|
||||
{
|
||||
m_output << "let ";
|
||||
@ -417,61 +435,7 @@ void ProtoConverter::visit(MultiVarDecl const& _x)
|
||||
delimiter = ", ";
|
||||
}
|
||||
m_output << "\n";
|
||||
|
||||
// If we are inside a for-init block, there are two places
|
||||
// where the visited vardecl may have been defined:
|
||||
// - directly inside the for-init block
|
||||
// - inside a block within the for-init block
|
||||
// In the latter case, we don't scope extend.
|
||||
if (m_inFunctionDef)
|
||||
{
|
||||
// Variables declared directly in for-init block
|
||||
// are tracked separately because their scope
|
||||
// extends beyond the block they are defined in
|
||||
// to the rest of the for-loop statement.
|
||||
if (m_inForInitScope && m_forInitScopeExtEnabled)
|
||||
{
|
||||
yulAssert(
|
||||
!m_funcForLoopInitVars.empty() && !m_funcForLoopInitVars.back().empty(),
|
||||
"Proto fuzzer: Invalid operation"
|
||||
);
|
||||
for (auto const& varName: varNames)
|
||||
m_funcForLoopInitVars.back().back().push_back(varName);
|
||||
}
|
||||
else
|
||||
{
|
||||
yulAssert(
|
||||
!m_funcVars.empty() && !m_funcVars.back().empty(),
|
||||
"Proto fuzzer: Invalid operation"
|
||||
);
|
||||
for (auto const& varName: varNames)
|
||||
m_funcVars.back().back().push_back(varName);
|
||||
}
|
||||
|
||||
}
|
||||
else
|
||||
{
|
||||
if (m_inForInitScope && m_forInitScopeExtEnabled)
|
||||
{
|
||||
yulAssert(
|
||||
!m_globalForLoopInitVars.empty(),
|
||||
"Proto fuzzer: Invalid operation"
|
||||
);
|
||||
|
||||
for (auto const& varName: varNames)
|
||||
m_globalForLoopInitVars.back().push_back(varName);
|
||||
}
|
||||
else
|
||||
{
|
||||
yulAssert(
|
||||
!m_globalVars.empty(),
|
||||
"Proto fuzzer: Invalid operation"
|
||||
);
|
||||
|
||||
for (auto const& varName: varNames)
|
||||
m_globalVars.back().push_back(varName);
|
||||
}
|
||||
}
|
||||
scopeVariables(varNames);
|
||||
}
|
||||
|
||||
void ProtoConverter::visit(TypedVarDecl const& _x)
|
||||
@ -1824,7 +1788,7 @@ void ProtoConverter::createFunctionDefAndCall(
|
||||
|
||||
yulAssert(
|
||||
!m_inForInitScope,
|
||||
"Proto fuzzer: Trying to create function call inside for-init block"
|
||||
"Proto fuzzer: Trying to create function call inside a for-init block"
|
||||
);
|
||||
if (_x.force_call())
|
||||
createFunctionCall(funcName, _numInParams, _numOutParams);
|
||||
|
@ -236,6 +236,11 @@ private:
|
||||
/// @return A vector of strings containing the printed variable names.
|
||||
std::vector<std::string> createVars(unsigned _startIdx, unsigned _endIdx);
|
||||
|
||||
/// Manages scope of yul variables
|
||||
/// @param _varNames is a list of yul variable names whose scope needs
|
||||
/// to be tracked according to yul scoping rules.
|
||||
void scopeVariables(std::vector<std::string> const& _varNames);
|
||||
|
||||
/// Print the yul syntax to make a call to a function named @a _funcName to
|
||||
/// the output stream.
|
||||
/// @param _funcName Name of the function to be called
|
||||
|
Loading…
Reference in New Issue
Block a user