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Replace boost::variant by std::variant in libyul

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This commit is contained in:
Leonardo Alt
2019-11-19 17:23:18 +01:00
parent 6d85b63f87
commit be849b3c47
75 changed files with 371 additions and 372 deletions
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libyul/backends/evm/EVMCodeTransform.cpp
+19 -17
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@@ -29,6 +29,8 @@
#include <boost/range/adaptor/reversed.hpp>
#include <variant>
using namespace std;
using namespace dev;
using namespace yul;
@@ -146,9 +148,9 @@ void CodeTransform::freeUnusedVariables()
return;
for (auto const& identifier: m_scope->identifiers)
if (identifier.second.type() == typeid(Scope::Variable))
if (holds_alternative<Scope::Variable>(identifier.second))
{
Scope::Variable const& var = boost::get<Scope::Variable>(identifier.second);
Scope::Variable const& var = std::get<Scope::Variable>(identifier.second);
if (m_variablesScheduledForDeletion.count(&var))
deleteVariable(var);
}
@@ -179,7 +181,7 @@ void CodeTransform::operator()(VariableDeclaration const& _varDecl)
int height = m_assembly.stackHeight();
if (_varDecl.value)
{
boost::apply_visitor(*this, *_varDecl.value);
std::visit(*this, *_varDecl.value);
expectDeposit(numVariables, height);
}
else
@@ -193,7 +195,7 @@ void CodeTransform::operator()(VariableDeclaration const& _varDecl)
for (int varIndex = numVariables - 1; varIndex >= 0; --varIndex)
{
YulString varName = _varDecl.variables[varIndex].name;
auto& var = boost::get<Scope::Variable>(m_scope->identifiers.at(varName));
auto& var = std::get<Scope::Variable>(m_scope->identifiers.at(varName));
m_context->variableStackHeights[&var] = height + varIndex;
if (!m_allowStackOpt)
continue;
@@ -242,7 +244,7 @@ void CodeTransform::stackError(StackTooDeepError _error, int _targetStackHeight)
void CodeTransform::operator()(Assignment const& _assignment)
{
int height = m_assembly.stackHeight();
boost::apply_visitor(*this, *_assignment.value);
std::visit(*this, *_assignment.value);
expectDeposit(_assignment.variableNames.size(), height);
m_assembly.setSourceLocation(_assignment.location);
@@ -261,7 +263,7 @@ void CodeTransform::operator()(StackAssignment const& _assignment)
void CodeTransform::operator()(ExpressionStatement const& _statement)
{
m_assembly.setSourceLocation(_statement.location);
boost::apply_visitor(*this, _statement.expression);
std::visit(*this, _statement.expression);
checkStackHeight(&_statement);
}
@@ -271,7 +273,7 @@ void CodeTransform::operator()(Label const& _label)
m_assembly.setSourceLocation(_label.location);
solAssert(m_scope, "");
solAssert(m_scope->identifiers.count(_label.name), "");
Scope::Label& label = boost::get<Scope::Label>(m_scope->identifiers.at(_label.name));
Scope::Label& label = std::get<Scope::Label>(m_scope->identifiers.at(_label.name));
m_assembly.appendLabel(labelID(label));
checkStackHeight(&_label);
}
@@ -340,7 +342,7 @@ void CodeTransform::operator()(FunctionalInstruction const& _instruction)
solAssert(_instruction.arguments.size() == 1, "");
}
m_assembly.setSourceLocation(_instruction.location);
auto label = labelFromIdentifier(boost::get<Identifier>(_instruction.arguments.at(0)));
auto label = labelFromIdentifier(std::get<Identifier>(_instruction.arguments.at(0)));
if (isJumpI)
m_assembly.appendJumpToIf(label);
else
@@ -476,7 +478,7 @@ void CodeTransform::operator()(FunctionDefinition const& _function)
{
solAssert(m_scope, "");
solAssert(m_scope->identifiers.count(_function.name), "");
Scope::Function& function = boost::get<Scope::Function>(m_scope->identifiers.at(_function.name));
Scope::Function& function = std::get<Scope::Function>(m_scope->identifiers.at(_function.name));
int const localStackAdjustment = m_evm15 ? 0 : 1;
int height = localStackAdjustment;
@@ -485,7 +487,7 @@ void CodeTransform::operator()(FunctionDefinition const& _function)
solAssert(varScope, "");
for (auto const& v: _function.parameters | boost::adaptors::reversed)
{
auto& var = boost::get<Scope::Variable>(varScope->identifiers.at(v.name));
auto& var = std::get<Scope::Variable>(varScope->identifiers.at(v.name));
m_context->variableStackHeights[&var] = height++;
}
@@ -503,7 +505,7 @@ void CodeTransform::operator()(FunctionDefinition const& _function)
for (auto const& v: _function.returnVariables)
{
auto& var = boost::get<Scope::Variable>(varScope->identifiers.at(v.name));
auto& var = std::get<Scope::Variable>(varScope->identifiers.at(v.name));
m_context->variableStackHeights[&var] = height++;
// Preset stack slots for return variables to zero.
m_assembly.appendConstant(u256(0));
@@ -717,7 +719,7 @@ AbstractAssembly::LabelID CodeTransform::functionEntryID(YulString _name, Scope:
void CodeTransform::visitExpression(Expression const& _expression)
{
int height = m_assembly.stackHeight();
boost::apply_visitor(*this, _expression);
std::visit(*this, _expression);
expectDeposit(1, height);
}
@@ -728,7 +730,7 @@ void CodeTransform::visitStatements(vector<Statement> const& _statements)
for (auto const& statement: _statements)
{
freeUnusedVariables();
auto const* functionDefinition = boost::get<FunctionDefinition>(&statement);
auto const* functionDefinition = std::get_if<FunctionDefinition>(&statement);
if (functionDefinition && !jumpTarget)
{
m_assembly.setSourceLocation(locationOf(statement));
@@ -741,7 +743,7 @@ void CodeTransform::visitStatements(vector<Statement> const& _statements)
jumpTarget = std::nullopt;
}
boost::apply_visitor(*this, statement);
std::visit(*this, statement);
}
// we may have a leftover jumpTarget
if (jumpTarget)
@@ -759,9 +761,9 @@ void CodeTransform::finalizeBlock(Block const& _block, int blockStartStackHeight
// pop variables
solAssert(m_info.scopes.at(&_block).get() == m_scope, "");
for (auto const& id: m_scope->identifiers)
if (id.second.type() == typeid(Scope::Variable))
if (holds_alternative<Scope::Variable>(id.second))
{
Scope::Variable const& var = boost::get<Scope::Variable>(id.second);
Scope::Variable const& var = std::get<Scope::Variable>(id.second);
if (m_allowStackOpt)
{
solAssert(!m_context->variableStackHeights.count(&var), "");
@@ -789,7 +791,7 @@ void CodeTransform::generateAssignment(Identifier const& _variableName)
solAssert(m_scope, "");
if (auto var = m_scope->lookup(_variableName.name))
{
Scope::Variable const& _var = boost::get<Scope::Variable>(*var);
Scope::Variable const& _var = std::get<Scope::Variable>(*var);
if (int heightDiff = variableHeightDiff(_var, _variableName.name, true))
m_assembly.appendInstruction(dev::eth::swapInstruction(heightDiff - 1));
m_assembly.appendInstruction(dev::eth::Instruction::POP);