public void PostWalk(AugAssignStatement node)
{
PostProcess(node);
}
// AugAssignStatement
public bool Walk(AugAssignStatement node)
{
return Process(node);
}
public override void PostWalk(AugAssignStatement node)
{
node.Left.Walk(fdef);
}
// AugAssignStmt
public override bool Walk(AugAssignStatement node)
{
return true;
}
public override bool Walk(AugAssignStatement node)
{
Emit(node); return false;
}
public virtual void PostWalk(AugAssignStatement node)
{
}
// AugAssignStatement
public virtual bool Walk(AugAssignStatement node)
{
return true;
}
// AugAssignStmt
public override bool Walk(AugAssignStatement node)
{
node.Left.Walk(define);
return true;
}
//expr_stmt: testlist (augassign testlist | ('=' testlist)*)
//augassign: '+=' | '-=' | '*=' | '/=' | '%=' | '&=' | '|=' | '^=' | '<<=' | '>>=' | '**=' | '//='
private Statement ParseExprStmt()
{
Expression lhs = ParseTestListAsExpr(false);
if (MaybeEat(TokenKind.Assign)) {
List<Expression> l = new List<Expression>();
l.Add(lhs);
do {
Expression e = ParseTestListAsExpr(false);
l.Add(e);
} while (MaybeEat(TokenKind.Assign));
int last = l.Count - 1;
Expression rhs = (Expression)l[last];
l.RemoveAt(last);
Expression[] lhss = l.ToArray();
//We check for legal assignment targets during code generation rather than parsing
Statement ret = new AssignStatement(lhss, rhs);
ret.SetLoc(GetExternal(), lhs.Start, GetEnd());
return ret;
} else {
BinaryOperator op = GetAssignOp(PeekToken());
if (op == null) {
Statement ret = new ExpressionStatement(lhs);
ret.SetLoc(GetExternal(), lhs.Start, GetEnd());
return ret;
} else {
NextToken();
Expression rhs = ParseTestListAsExpr(false);
Statement ret = new AugAssignStatement(op, lhs, rhs);
ret.SetLoc(GetExternal(), lhs.Start, GetEnd());
return ret;
}
}
}
