public override void CaseALocalLvalue(ALocalLvalue node)
{
if (Util.HasAncestor <AMethodDecl>(node) && //Is in a method
data.LocalLinks[node].Parent() == Util.GetAncestor <AMethodDecl>(node)) //Is a link to a formal in that method
{
if (Util.HasAncestor <AAssignmentExp>(node) && //Is in an assignement
Util.IsAncestor(node, Util.GetAncestor <AAssignmentExp>(node).GetLvalue())) //Is left side of the assignment
{
AssignedFormals.Add(data.LocalLinks[node]);
}
else if (Util.HasAncestor <ASimpleInvokeExp>(node))
{
ASimpleInvokeExp invoke = Util.GetAncestor <ASimpleInvokeExp>(node);
AMethodDecl method = data.SimpleMethodLinks[invoke];
for (int i = 0; i < invoke.GetArgs().Count; i++)
{
AALocalDecl formal = (AALocalDecl)method.GetFormals()[i];
if ((formal.GetRef() != null || formal.GetOut() != null) && Util.IsAncestor(node, (Node)invoke.GetArgs()[i]))
{
AssignedFormals.Add(data.LocalLinks[node]);
return;
}
}
}
}
}
public static List <AABlock> Inline(ASimpleInvokeExp node, FinalTransformations finalTrans)
{
/*if (Util.GetAncestor<AMethodDecl>(node) != null && Util.GetAncestor<AMethodDecl>(node).GetName().Text == "UIChatFrame_LeaveChannel")
* node = node;*/
SharedData data = finalTrans.data;
//If this node is inside the condition of a while, replace it with a new local var,
//make a clone before the while, one before each continue in the while, and one at the end of the while
//(unless the end is a return or break)
AABlock pBlock;
if (Util.HasAncestor <AWhileStm>(node))
{
AWhileStm whileStm = Util.GetAncestor <AWhileStm>(node);
if (Util.IsAncestor(node, whileStm.GetCondition()))
{
List <ASimpleInvokeExp> toInline = new List <ASimpleInvokeExp>();
//Above while
AALocalDecl replaceVarDecl = new AALocalDecl(new APublicVisibilityModifier(), null, null, null, null,
Util.MakeClone(data.ExpTypes[node], data),
new TIdentifier("whileVar"), null);
ALocalLvalue replaceVarRef = new ALocalLvalue(new TIdentifier("whileVar"));
ALvalueExp replaceVarRefExp = new ALvalueExp(replaceVarRef);
data.LocalLinks[replaceVarRef] = replaceVarDecl;
data.ExpTypes[replaceVarRefExp] = data.LvalueTypes[replaceVarRef] = replaceVarDecl.GetType();
node.ReplaceBy(replaceVarRefExp);
replaceVarDecl.SetInit(node);
pBlock = (AABlock)whileStm.Parent();
pBlock.GetStatements().Insert(pBlock.GetStatements().IndexOf(whileStm), new ALocalDeclStm(new TSemicolon(";"), replaceVarDecl));
toInline.Add(node);
//In the end of the while
PStm lastStm = whileStm.GetBody();
while (lastStm is ABlockStm)
{
AABlock block = (AABlock)((ABlockStm)lastStm).GetBlock();
if (block.GetStatements().Count == 0)
{
lastStm = null;
break;
}
lastStm = (PStm)block.GetStatements()[block.GetStatements().Count - 1];
}
if (lastStm == null || !(lastStm is AValueReturnStm || lastStm is AVoidReturnStm || lastStm is ABreakStm))
{
lastStm = whileStm.GetBody();
AABlock block;
if (lastStm is ABlockStm)
{
block = (AABlock)((ABlockStm)lastStm).GetBlock();
}
else
{
block = new AABlock(new ArrayList(), new TRBrace("}"));
block.GetStatements().Add(lastStm);
whileStm.SetBody(new ABlockStm(new TLBrace("{"), block));
}
replaceVarRef = new ALocalLvalue(new TIdentifier("whileVar"));
ASimpleInvokeExp clone = (ASimpleInvokeExp)Util.MakeClone(node, data);
toInline.Add(clone);
AAssignmentExp assignment = new AAssignmentExp(new TAssign("="), replaceVarRef, clone);
data.LocalLinks[replaceVarRef] = replaceVarDecl;
data.ExpTypes[assignment] = data.LvalueTypes[replaceVarRef] = replaceVarDecl.GetType();
block.GetStatements().Add(new AExpStm(new TSemicolon(";"), assignment));
}
//After each continue
CloneBeforeContinue cloner = new CloneBeforeContinue(node, replaceVarDecl, data);
whileStm.GetBody().Apply(cloner);
toInline.AddRange(cloner.replacementExpressions);
List <AABlock> visitBlocks = new List <AABlock>();
foreach (ASimpleInvokeExp invoke in toInline)
{
visitBlocks.AddRange(Inline(invoke, finalTrans));
}
return(visitBlocks);
}
}
AMethodDecl decl = finalTrans.data.SimpleMethodLinks[node];
FindAssignedToFormals assignedToFormalsFinder = new FindAssignedToFormals(finalTrans.data);
decl.Apply(assignedToFormalsFinder);
List <AALocalDecl> assignedToFormals = assignedToFormalsFinder.AssignedFormals;
/*
* inline int foo(int a)
* {
* int b = 2;
* int c;
* ...
* while(...)
* {
* ...
* break;
* ...
* return c;
* }
* ...
* return 2;
* }
*
* bar(foo(<arg for a>));
* ->
*
* {
* bool inlineMethodReturned = false;
* int inlineReturner;
* int a = <arg for a>;
* while (!inlineMethodReturned)
* {
* int b = 2;
* int c;
* ...
* while(...)
* {
* ...
* break
* ...
* inlineReturner = c;
* inlineMethodReturned = true;
* break;
* }
* if (inlineMethodReturned)
* {
* break;
* }
* ...
* inlineReturner = 2;
* inlineMethodReturned = true;
* break;
* break;
* }
* bar(inlineReturner);
* }
*
*
*/
AABlock outerBlock = new AABlock();
PExp exp = new ABooleanConstExp(new AFalseBool());
finalTrans.data.ExpTypes[exp] = new ANamedType(new TIdentifier("bool"), null);
AALocalDecl hasMethodReturnedVar = new AALocalDecl(new APublicVisibilityModifier(), null, null, null, null, new ANamedType(new TIdentifier("bool"), null),
new TIdentifier("hasInlineReturned"), exp);
finalTrans.data.GeneratedVariables.Add(hasMethodReturnedVar);
PStm stm = new ALocalDeclStm(new TSemicolon(";"), hasMethodReturnedVar);
outerBlock.GetStatements().Add(stm);
AALocalDecl methodReturnerVar = null;
if (!(decl.GetReturnType() is AVoidType))
{
methodReturnerVar = new AALocalDecl(new APublicVisibilityModifier(), null, null, null, null, Util.MakeClone(decl.GetReturnType(), finalTrans.data),
new TIdentifier("inlineReturner"), null);
stm = new ALocalDeclStm(new TSemicolon(";"), methodReturnerVar);
outerBlock.GetStatements().Add(stm);
}
AABlock afterBlock = new AABlock();
//A dictionary from the formals of the inline method to a cloneable replacement lvalue
Dictionary <AALocalDecl, PLvalue> Parameters = new Dictionary <AALocalDecl, PLvalue>();
Dictionary <AALocalDecl, PExp> ParameterExps = new Dictionary <AALocalDecl, PExp>();
for (int i = 0; i < decl.GetFormals().Count; i++)
{
AALocalDecl formal = (AALocalDecl)decl.GetFormals()[i];
PExp arg = (PExp)node.GetArgs()[0];
PLvalue lvalue;
//if ref, dont make a new var
if (formal.GetRef() != null && arg is ALvalueExp)
{
arg.Apply(new MoveMethodDeclsOut("inlineVar", finalTrans.data));
arg.Parent().RemoveChild(arg);
lvalue = ((ALvalueExp)arg).GetLvalue();
}
else if (!assignedToFormals.Contains(formal) && Util.IsLocal(arg, finalTrans.data))
{
lvalue = new ALocalLvalue(new TIdentifier("I hope I dont make it"));
finalTrans.data.LvalueTypes[lvalue] = formal.GetType();
finalTrans.data.LocalLinks[(ALocalLvalue)lvalue] = formal;
ParameterExps[formal] = arg;
arg.Parent().RemoveChild(arg);
}
else
{
AAssignmentExp assExp = null;
if (formal.GetOut() != null)
{
//Dont initialize with arg, but assign arg after
arg.Apply(new MoveMethodDeclsOut("inlineVar", finalTrans.data));
lvalue = ((ALvalueExp)arg).GetLvalue();
assExp = new AAssignmentExp(new TAssign("="), lvalue, null);
finalTrans.data.ExpTypes[assExp] = finalTrans.data.LvalueTypes[lvalue];
arg.Parent().RemoveChild(arg);
arg = null;
}
AALocalDecl parameter = new AALocalDecl(new APublicVisibilityModifier(), null, null, null, null, Util.MakeClone(formal.GetType(), finalTrans.data),
new TIdentifier(formal.GetName().Text),
arg);
stm = new ALocalDeclStm(new TSemicolon(";"), parameter);
outerBlock.GetStatements().Add(stm);
lvalue = new ALocalLvalue(new TIdentifier(parameter.GetName().Text));
finalTrans.data.LvalueTypes[lvalue] = parameter.GetType();
finalTrans.data.LocalLinks[(ALocalLvalue)lvalue] = parameter;
if (formal.GetOut() != null)
{
//Dont initialize with arg, but assign arg after
ALvalueExp lvalueExp = new ALvalueExp(Util.MakeClone(lvalue, finalTrans.data));
finalTrans.data.ExpTypes[lvalueExp] = finalTrans.data.LvalueTypes[lvalue];
assExp.SetExp(lvalueExp);
afterBlock.GetStatements().Add(new AExpStm(new TSemicolon(";"), assExp));
}
}
Parameters.Add(formal, lvalue);
}
AABlock innerBlock = (AABlock)decl.GetBlock().Clone();
exp = new ABooleanConstExp(new ATrueBool());
finalTrans.data.ExpTypes[exp] = new ANamedType(new TIdentifier("bool"), null);
ABlockStm innerBlockStm = new ABlockStm(new TLBrace("{"), innerBlock);
bool needWhile = CheckIfWhilesIsNeeded.IsWhileNeeded(decl.GetBlock());
if (needWhile)
{
stm = new AWhileStm(new TLParen("("), exp, innerBlockStm);
}
else
{
stm = innerBlockStm;
}
outerBlock.GetStatements().Add(stm);
outerBlock.GetStatements().Add(new ABlockStm(new TLBrace("{"), afterBlock));
//Clone method contents to inner block.
CloneMethod cloneFixer = new CloneMethod(finalTrans, Parameters, ParameterExps, innerBlockStm);
decl.GetBlock().Apply(cloneFixer);
foreach (KeyValuePair <PLvalue, PExp> pair in cloneFixer.ReplaceUsAfter)
{
PLvalue lvalue = pair.Key;
PExp replacement = Util.MakeClone(pair.Value, finalTrans.data);
ALvalueExp lvalueParent = (ALvalueExp)lvalue.Parent();
lvalueParent.ReplaceBy(replacement);
}
innerBlockStm.Apply(new FixTypes(finalTrans.data));
innerBlock.Apply(new FixReturnsAndWhiles(hasMethodReturnedVar, methodReturnerVar, finalTrans.data, needWhile));
GetNonBlockStm stmFinder = new GetNonBlockStm(false);
innerBlock.Apply(stmFinder);
if (needWhile && (stmFinder.Stm == null || !(stmFinder.Stm is ABreakStm)))
{
innerBlock.GetStatements().Add(new ABreakStm(new TBreak("break")));
}
//Insert before current statement
ABlockStm outerBlockStm = new ABlockStm(new TLBrace("{"), outerBlock);
PStm pStm = Util.GetAncestor <PStm>(node);
pBlock = (AABlock)pStm.Parent();
pBlock.GetStatements().Insert(pBlock.GetStatements().IndexOf(pStm), outerBlockStm);
if (node.Parent() == pStm && pStm is AExpStm)
{
pBlock.RemoveChild(pStm);
}
else
{
PLvalue lvalue = new ALocalLvalue(new TIdentifier(methodReturnerVar.GetName().Text));
finalTrans.data.LvalueTypes[lvalue] = methodReturnerVar.GetType();
finalTrans.data.LocalLinks[(ALocalLvalue)lvalue] = methodReturnerVar;
exp = new ALvalueExp(lvalue);
finalTrans.data.ExpTypes[exp] = methodReturnerVar.GetType();
node.ReplaceBy(exp);
}
return(new List <AABlock>()
{
outerBlock
});
}