public CodeGenAnalyser(ISyntaxTreeNode astRoot, bool optimize)
{
_astRoot = astRoot;
_currentLocalIdx = 0;
_previousVarKind = VariableDeclaration.Kind.Class;
_optimize = optimize;
}
public override void Visit(VariableDeclaration node)
{
if (_pass != 1) return;
if (_previousVarKind != node.VariableKind)
{
_currentLocalIdx = 0;
}
if (node.VariableKind == VariableDeclaration.Kind.Formal)
{
// Note: this does not take static methods into account
// since the only static method in MiniJava is the main
// method and it cannot have parameters.
node.LocalIndex = (short) (1 + _currentLocalIdx++);
}
else if (node.VariableKind == VariableDeclaration.Kind.Local &&
(!_optimize || node.Used))
{
node.LocalIndex = _currentLocalIdx++;
}
_previousVarKind = node.VariableKind;
}
