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Merge pull request #6670 from ethereum/refactorIRGen

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[SolYul] Add type helper and move some items to post visit.
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chriseth 2019-05-06 14:14:23 +02:00 committed by GitHub
commit 442742e497
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2 changed files with 25 additions and 32 deletions
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49
libsolidity/codegen/ir/IRGeneratorForStatements.cpp
View File

@ -86,7 +86,7 @@ string IRGeneratorForStatements::code() const
return m_code.str();
}
bool IRGeneratorForStatements::visit(VariableDeclarationStatement const& _varDeclStatement)
void IRGeneratorForStatements::endVisit(VariableDeclarationStatement const& _varDeclStatement)
{
for (auto const& decl: _varDeclStatement.declarations())
if (decl)
@ -96,8 +96,6 @@ bool IRGeneratorForStatements::visit(VariableDeclarationStatement const& _varDec
{
solUnimplementedAssert(_varDeclStatement.declarations().size() == 1, "");
expression->accept(*this);
VariableDeclaration const& varDecl = *_varDeclStatement.declarations().front();
m_code <<
"let " <<
@ -110,8 +108,6 @@ bool IRGeneratorForStatements::visit(VariableDeclarationStatement const& _varDec
for (auto const& decl: _varDeclStatement.declarations())
if (decl)
m_code << "let " << m_context.localVariableName(*decl) << "\n";
return false;
}
bool IRGeneratorForStatements::visit(Assignment const& _assignment)
@ -120,7 +116,7 @@ bool IRGeneratorForStatements::visit(Assignment const& _assignment)
_assignment.rightHandSide().accept(*this);
Type const* intermediateType = _assignment.rightHandSide().annotation().type->closestTemporaryType(
_assignment.leftHandSide().annotation().type
&type(_assignment.leftHandSide())
);
string intermediateValue = m_context.newYulVariable();
m_code << "let " << intermediateValue << " := " << expressionAsType(_assignment.rightHandSide(), *intermediateType) << "\n";
@ -171,7 +167,7 @@ bool IRGeneratorForStatements::visit(Break const&)
return false;
}
bool IRGeneratorForStatements::visit(Return const& _return)
void IRGeneratorForStatements::endVisit(Return const& _return)
{
if (Expression const* value = _return.expression())
{
@ -182,8 +178,6 @@ bool IRGeneratorForStatements::visit(Return const& _return)
for (auto const& retVariable: returnParameters)
types.push_back(retVariable->annotation().type);
value->accept(*this);
// TODO support tuples
solUnimplementedAssert(types.size() == 1, "Multi-returns not implemented.");
m_code <<
@ -193,7 +187,6 @@ bool IRGeneratorForStatements::visit(Return const& _return)
"\n";
}
m_code << "return_flag := 0\n" << "break\n";
return false;
}
void IRGeneratorForStatements::endVisit(BinaryOperation const& _binOp)
@ -227,7 +220,7 @@ void IRGeneratorForStatements::endVisit(BinaryOperation const& _binOp)
}
}
bool IRGeneratorForStatements::visit(FunctionCall const& _functionCall)
void IRGeneratorForStatements::endVisit(FunctionCall const& _functionCall)
{
solUnimplementedAssert(
_functionCall.annotation().kind == FunctionCallKind::FunctionCall ||
@ -235,22 +228,21 @@ bool IRGeneratorForStatements::visit(FunctionCall const& _functionCall)
"This type of function call is not yet implemented"
);
TypePointer const funcType = _functionCall.expression().annotation().type;
Type const& funcType = type(_functionCall.expression());
if (_functionCall.annotation().kind == FunctionCallKind::TypeConversion)
{
solAssert(funcType->category() == Type::Category::TypeType, "Expected category to be TypeType");
solAssert(funcType.category() == Type::Category::TypeType, "Expected category to be TypeType");
solAssert(_functionCall.arguments().size() == 1, "Expected one argument for type conversion");
_functionCall.arguments().front()->accept(*this);
defineExpression(_functionCall) <<
expressionAsType(*_functionCall.arguments().front(), *_functionCall.annotation().type) <<
expressionAsType(*_functionCall.arguments().front(), type(_functionCall)) <<
"\n";
return false;
return;
}
FunctionTypePointer functionType = dynamic_cast<FunctionType const*>(funcType);
FunctionTypePointer functionType = dynamic_cast<FunctionType const*>(&funcType);
TypePointers parameterTypes = functionType->parameterTypes();
vector<ASTPointer<Expression const>> const& callArguments = _functionCall.arguments();
@ -281,14 +273,10 @@ bool IRGeneratorForStatements::visit(FunctionCall const& _functionCall)
{
vector<string> args;
for (unsigned i = 0; i < arguments.size(); ++i)
{
arguments[i]->accept(*this);
if (functionType->takesArbitraryParameters())
args.emplace_back(m_context.variable(*arguments[i]));
else
args.emplace_back(expressionAsType(*arguments[i], *parameterTypes[i]));
}
if (auto identifier = dynamic_cast<Identifier const*>(&_functionCall.expression()))
{
@ -301,12 +289,10 @@ bool IRGeneratorForStatements::visit(FunctionCall const& _functionCall)
"(" <<
joinHumanReadable(args) <<
")\n";
return false;
return;
}
}
_functionCall.expression().accept(*this);
// @TODO The function can very well return multiple vars.
args = vector<string>{m_context.variable(_functionCall.expression())} + args;
defineExpression(_functionCall) <<
@ -319,7 +305,6 @@ bool IRGeneratorForStatements::visit(FunctionCall const& _functionCall)
default:
solUnimplemented("");
}
return false;
}
bool IRGeneratorForStatements::visit(InlineAssembly const& _inlineAsm)
@ -362,14 +347,14 @@ bool IRGeneratorForStatements::visit(Identifier const& _identifier)
bool IRGeneratorForStatements::visit(Literal const& _literal)
{
TypePointer type = _literal.annotation().type;
Type const& literalType = type(_literal);
switch (type->category())
switch (literalType.category())
{
case Type::Category::RationalNumber:
case Type::Category::Bool:
case Type::Category::Address:
defineExpression(_literal) << toCompactHexWithPrefix(type->literalValue(&_literal)) << "\n";
defineExpression(_literal) << toCompactHexWithPrefix(literalType.literalValue(&_literal)) << "\n";
break;
case Type::Category::StringLiteral:
solUnimplemented("");
@ -382,7 +367,7 @@ bool IRGeneratorForStatements::visit(Literal const& _literal)
string IRGeneratorForStatements::expressionAsType(Expression const& _expression, Type const& _to)
{
Type const& from = *_expression.annotation().type;
Type const& from = type(_expression);
string varName = m_context.variable(_expression);
if (from == _to)
@ -406,3 +391,9 @@ void IRGeneratorForStatements::setLValue(Expression const& _expression, unique_p
else
defineExpression(_expression) << _lvalue->retrieveValue() << "\n";
}
Type const& IRGeneratorForStatements::type(Expression const& _expression)
{
solAssert(_expression.annotation().type, "Type of expression not set.");
return *_expression.annotation().type;
}

8
libsolidity/codegen/ir/IRGeneratorForStatements.h
View File

@ -45,14 +45,14 @@ public:
std::string code() const;
bool visit(VariableDeclarationStatement const& _variableDeclaration) override;
void endVisit(VariableDeclarationStatement const& _variableDeclaration) override;
bool visit(Assignment const& _assignment) override;
bool visit(ForStatement const& _forStatement) override;
bool visit(Continue const& _continueStatement) override;
bool visit(Break const& _breakStatement) override;
bool visit(Return const& _return) override;
void endVisit(Return const& _return) override;
void endVisit(BinaryOperation const& _binOp) override;
bool visit(FunctionCall const& _funCall) override;
void endVisit(FunctionCall const& _funCall) override;
bool visit(InlineAssembly const& _inlineAsm) override;
bool visit(Identifier const& _identifier) override;
bool visit(Literal const& _literal) override;
@ -65,6 +65,8 @@ private:
void setLValue(Expression const& _expression, std::unique_ptr<IRLValue> _lvalue);
static Type const& type(Expression const& _expression);
std::ostringstream m_code;
IRGenerationContext& m_context;
YulUtilFunctions& m_utils;