internal void Render(LuaAssignmentExpressionSyntax node)
{
node.Left.Render(this);
WriteSpace();
Write(node.OperatorToken);
WriteSpace();
node.Right.Render(this);
}
public override LuaSyntaxNode VisitConditionalAccessExpression(ConditionalAccessExpressionSyntax node)
{
bool isEmpty = functions_.Count == 0;
if (isEmpty)
{
LuaFunctionExpressionSyntax function = new LuaFunctionExpressionSyntax();
PushFunction(function);
blocks_.Push(function.Body);
}
var temp = GetTempIdentifier(node.Expression);
conditionalTemps_.Push(temp);
var expression = (LuaExpressionSyntax)node.Expression.Accept(this);
CurBlock.Statements.Add(new LuaLocalVariableDeclaratorSyntax(temp, expression));
LuaBinaryExpressionSyntax condition = new LuaBinaryExpressionSyntax(temp, LuaSyntaxNode.Tokens.NotEquals, LuaIdentifierNameSyntax.Nil);
LuaIfStatementSyntax ifStatement = new LuaIfStatementSyntax(condition);
CurBlock.Statements.Add(ifStatement);
blocks_.Push(ifStatement.Body);
var whenNotNull = (LuaExpressionSyntax)node.WhenNotNull.Accept(this);
blocks_.Pop();
conditionalTemps_.Pop();
if (node.Parent.IsKind(SyntaxKind.ExpressionStatement))
{
if (isEmpty)
{
throw new InvalidOperationException();
}
ifStatement.Body.Statements.Add(new LuaExpressionStatementSyntax(whenNotNull));
return(LuaExpressionSyntax.EmptyExpression);
}
else
{
LuaAssignmentExpressionSyntax assignment = new LuaAssignmentExpressionSyntax(temp, whenNotNull);
ifStatement.Body.Statements.Add(new LuaExpressionStatementSyntax(assignment));
if (isEmpty)
{
var function = CurFunction;
function.AddStatement(new LuaReturnStatementSyntax(temp));
blocks_.Pop();
PopFunction();
return(new LuaInvocationExpressionSyntax(new LuaParenthesizedExpressionSyntax(function)));
}
else
{
return(temp);
}
}
}
