private Computation ConvertNode(AST.VariableDeclaration node, ILabel after)
{
var result = this.labelFactory.WithLabel(
writeLabel =>
{
var nodeValue = node.Value ?? new AST.IntegerLiteral(node.InputRange, 0);
var value = this.GenerateExpression(nodeValue, writeLabel);
var write = this.readWriteGenerator.GenerateWrite(
this.function,
node.IntermediateVariable,
value.Result);
return(new Tree(write, new UnconditionalJump(after)), value);
});
return(new Computation(result.Start));
}
/// <summary>
/// Creates a new variable instnace
/// </summary>
/// <param name="source">The source item</param>
public Variable(AST.VariableDeclaration source)
{
Source = source ?? throw new ArgumentNullException(nameof(source));
}
private ILocation ReserveLocation(Function function, IReadOnlyDictionary <AST.VariableDeclaration, HashSet <AST.FunctionDeclaration> > variableUsages, AST.VariableDeclaration variable)
{
if (variableUsages[variable].Count > 1)
{
return(function.ReserveClosureLocation(variable.Identifier, variable.VariableType));
}
else if (variable.VariableType.IsHeapType())
{
return(function.ReserveStackFrameLocation(variable.VariableType));
}
else
{
return(new VirtualRegister());
}
}
