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support for += and -= for delegates

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This commit is contained in:
Kevin Glynn 2011-05-20 13:08:11 +02:00
parent 53e2c3b8c7
commit 05c15f501a
3 changed files with 80 additions and 15 deletions
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2
CSharpTranslator/antlr3/src/CS2JTranslator/CS2JTemplate/TranslationTemplate.cs
View File

@ -2370,7 +2370,7 @@ namespace Twiglet.CS2J.Translator.TypeRep
}
#endregion
protected string mkFormattedTypeName(bool incNameSpace, string langle, string rangle)
public string mkFormattedTypeName(bool incNameSpace, string langle, string rangle)
{
StringBuilder fmt = new StringBuilder();
if (TypeName == "System.Array")

2
CSharpTranslator/antlr3/src/CS2JTranslator/CS2JTransform/JavaMaker.g
View File

@ -982,7 +982,7 @@ implicit_anonymous_function_parameter_list:
implicit_anonymous_function_parameter:
identifier;
anonymous_function_body:
expression -> OPEN_BRACE[$expression.tree.Token, "{"] ^(RETURN[$expression.tree.Token, "return"] expression) CLOSE_BRACE[$expression.tree.Token, "}"]
expression
| block ;
///////////////////////////////////////////////////////

91
CSharpTranslator/antlr3/src/CS2JTranslator/CS2JTransform/NetMaker.g
View File

@ -579,7 +579,7 @@ scope MkNonGeneric {
}
else {
delTypeRoot = (CommonTree)adaptor.BecomeRoot((CommonTree)adaptor.Create(TYPE, tok, "TYPE"), delTypeRoot);
adaptor.AddChild(delTypeRoot, (CommonTree)adaptor.Create(IDENTIFIER, tok, delType.Java));
adaptor.AddChild(delTypeRoot, (CommonTree)adaptor.Create(IDENTIFIER, tok, delType.mkFormattedTypeName(false, "<",">")));
AddToImports(delType.Imports);
}
adaptor.AddChild(retTypeRoot, delTypeRoot);
@ -664,7 +664,7 @@ scope MkNonGeneric {
else {
CommonTree delTyTree = (CommonTree)adaptor.Nil;
delTyTree = (CommonTree)adaptor.BecomeRoot((CommonTree)adaptor.Create(TYPE, tok, "TYPE"), delTyTree);
adaptor.AddChild(delTyTree, (CommonTree)adaptor.Create(IDENTIFIER, tok, delg.Java));
adaptor.AddChild(delTyTree, (CommonTree)adaptor.Create(IDENTIFIER, tok, delg.mkFormattedTypeName(false, "<",">")));
AddToImports(delg.Imports);
adaptor.AddChild(root, delTyTree);
}
@ -728,7 +728,7 @@ scope MkNonGeneric {
else {
CommonTree delTyTree = (CommonTree)adaptor.Nil;
delTyTree = (CommonTree)adaptor.BecomeRoot((CommonTree)adaptor.Create(TYPE, tok, "TYPE"), delTyTree);
adaptor.AddChild(delTyTree, (CommonTree)adaptor.Create(IDENTIFIER, tok, delg.Java));
adaptor.AddChild(delTyTree, (CommonTree)adaptor.Create(IDENTIFIER, tok, delg.mkFormattedTypeName(false, "<",">")));
AddToImports(delg.Imports);
adaptor.AddChild(root, delTyTree);
}
@ -1564,14 +1564,16 @@ assignment
ResolveResult fieldResult = null;
ResolveResult indexerResult = null;
CommonTree lhsTree = null;
}
@after {
if (ret != null)
$assignment.tree = ret;
}:
((^('.' expression[ObjectType] identifier generic_argument_list?) | identifier) assignment_operator) =>
(^('.' se=expression[ObjectType] i=identifier generic_argument_list?)
| i=identifier { isThis = true; })
(^(d0='.' se=expression[ObjectType] i=identifier generic_argument_list?) {lhsTree = dupTree($d0.tree); }
| i=identifier { isThis = true; lhsTree = dupTree($i.tree); })
{
TypeRepTemplate varType = SymTabLookup($i.thetext);
if (isThis && varType != null) {
@ -1594,12 +1596,70 @@ assignment
}
a=assignment_operator rhs=expression[lhsType]
{
CommonTree assignmentOp = $a.tree;
CommonTree rhsTree = $rhs.tree;
TypeRepTemplate rhsType = $rhs.dotNetType ?? ObjectType;
// Is lhs a delegate and assignment one of += -=?
if (lhsType is DelegateRepTemplate && (assignmentOp.Token.Type == PLUS_ASSIGN || assignmentOp.Token.Type == MINUS_ASSIGN)) {
// rewrite to lhs = <op>(lhs,rhs)
// First calculate new rhs
CommonTree lhsGetter = lhsTree;
// Do we have a getter for lhs
if (isLocalVar && lhsType.IsWrapped) {
Dictionary<string,CommonTree> myMap = new Dictionary<string,CommonTree>();
myMap["this"] = wrapExpression($i.tree, $i.tree.Token);
lhsGetter = mkJavaWrapper("${this}.getValue()", myMap, $i.tree.Token);
}
else if (expType != null) {
// Is lhs a property?
ResolveResult readFieldResult = expType.Resolve($i.thetext, false, AppEnv);
if (readFieldResult.Result is PropRepTemplate) {
if (!String.IsNullOrEmpty(readFieldResult.Result.Warning)) Warning($i.tree.Token.Line, readFieldResult.Result.Warning);
PropRepTemplate readPropRep = readFieldResult.Result as PropRepTemplate;
if (!String.IsNullOrEmpty(readPropRep.JavaGet)) {
// need to translate to setProp(getProp <op> rhs)
Dictionary<string,CommonTree> rhsMap = new Dictionary<string,CommonTree>();
if (!isThis)
rhsMap["this"] = wrapExpression($se.tree, $i.tree.Token);
lhsGetter = mkJavaWrapper(readPropRep.JavaGet, rhsMap, assignmentOp.Token);
lhsType = readFieldResult.ResultType;
}
}
}
// OK, lhsGetter is good for use.
List<TypeRepTemplate> args = new List<TypeRepTemplate>();
args.Add(lhsType);
args.Add(rhsType == null ? lhsType : rhsType);
ResolveResult calleeResult = lhsType.Resolve(assignmentOp.Token.Type == PLUS_ASSIGN ? "Combine" : "Remove", args, AppEnv);
if (calleeResult != null) {
if (!String.IsNullOrEmpty(calleeResult.Result.Warning)) Warning(assignmentOp.Token.Line, calleeResult.Result.Warning);
Dictionary<string,CommonTree> myMap = new Dictionary<string,CommonTree>();
MethodRepTemplate calleeMethod = calleeResult.Result as MethodRepTemplate;
myMap[calleeMethod.Params[0].Name] = wrapArgument(lhsGetter, assignmentOp.token);
myMap[calleeMethod.Params[1].Name] = wrapArgument(rhsTree, assignmentOp.token);
rhsTree = mkJavaWrapper(calleeMethod.Java, myMap, assignmentOp.token);
AddToImports(calleeMethod.Imports);
rhsType = calleeResult.ResultType;
assignmentOp = (CommonTree)adaptor.Create(ASSIGN, assignmentOp.Token, "=");
// set up a default ret
ret = (CommonTree)adaptor.Nil;
adaptor.AddChild(ret, dupTree(lhsTree));
adaptor.AddChild(ret, dupTree(assignmentOp));
adaptor.AddChild(ret, dupTree(rhsTree));
}
else {
WarningFailedResolve(assignmentOp.Token.Line, "Could not resolve method application of " + (assignmentOp.Token.Type == PLUS_ASSIGN ? "Combine" : "Remove") + " against " + lhsType.TypeName);
}
}
if (isLocalVar) {
// Is this a wrapped parameter?
if (lhsType.IsWrapped) {
Dictionary<string,CommonTree> myMap = new Dictionary<string,CommonTree>();
myMap["this"] = wrapExpression($i.tree, $i.tree.Token);
myMap["value"] = wrapExpression($rhs.tree, $rhs.tree.Token);
myMap["value"] = wrapExpression(rhsTree, rhsTree.Token);
ret = mkJavaWrapper("${this}.setValue(${value})", myMap, $i.tree.Token);
}
// a simple variable assignment
@ -1610,10 +1670,10 @@ assignment
if (fieldResult.Result is PropRepTemplate) {
PropRepTemplate propRep = fieldResult.Result as PropRepTemplate;
if (!String.IsNullOrEmpty(propRep.JavaSet)) {
CommonTree newRhsExp = $rhs.tree;
CommonTree newRhsExp = rhsTree;
// if assignment operator is a short cut operator then only translate if we also have JavaGet
bool goodTx = true;
if ($a.tree.Token.Type != ASSIGN) {
if (assignmentOp.Token.Type != ASSIGN) {
// We have to resolve property reads and writes separately, because they may come from
// different parent classes
ResolveResult readFieldResult = expType.Resolve($i.thetext, false, AppEnv);
@ -1627,8 +1687,8 @@ assignment
Dictionary<string,CommonTree> rhsMap = new Dictionary<string,CommonTree>();
if (!isThis)
rhsMap["this"] = wrapExpression($se.tree, $i.tree.Token);
CommonTree rhsPropTree = mkJavaWrapper(readPropRep.JavaGet, rhsMap, $a.tree.Token);
newRhsExp = mkOpExp(mkOpExp($a.tree), rhsPropTree, $rhs.tree);
CommonTree rhsPropTree = mkJavaWrapper(readPropRep.JavaGet, rhsMap, assignmentOp.Token);
newRhsExp = mkOpExp(mkOpExp(assignmentOp), rhsPropTree, rhsTree);
}
else {
goodTx = false;
@ -1640,7 +1700,7 @@ assignment
valMap["this"] = wrapExpression($se.tree, $i.tree.Token);
valMap["value"] = wrapExpression(newRhsExp, $i.tree.Token);
if (goodTx) {
ret = mkJavaWrapper(propRep.JavaSet, valMap, $a.tree.Token);
ret = mkJavaWrapper(propRep.JavaSet, valMap, assignmentOp.Token);
AddToImports(propRep.Imports);
}
}
@ -1997,13 +2057,13 @@ lambda_expression[TypeRepTemplate typeCtxt] returns [TypeRepTemplate dotNetType]
if (ret != null)
$lambda_expression.tree = ret;
}:
anonymous_function_signature[$typeCtxt]? d='=>' block
anonymous_function_signature[$typeCtxt]? d='=>' anonymous_function_body
{
if ($typeCtxt != null && $typeCtxt is DelegateRepTemplate && $anonymous_function_signature.isTypedParams) {
// use an anonymous inner class to generate a delegate object (object wih an Invoke with appropriate arguments)
// new <delegate_name>() { public void Invoke(<formal args>) throw exception <block> }
DelegateRepTemplate delType = $typeCtxt as DelegateRepTemplate;
ret = mkDelegateObject((CommonTree)$typeCtxt.Tree, $anonymous_function_signature.tree, $block.tree, delType, $d.token);
ret = mkDelegateObject((CommonTree)$typeCtxt.Tree, $anonymous_function_signature.tree, $anonymous_function_body.tree, delType, $d.token);
$dotNetType = $typeCtxt;
}
}
@ -2029,6 +2089,11 @@ anonymous_function_signature[TypeRepTemplate typeCtxt] returns [bool isTypedPara
}
}
;
anonymous_function_body:
expression[ObjectType]
-> {$expression.dotNetType != null && $expression.dotNetType.IsA(VoidType, AppEnv)}? OPEN_BRACE[$expression.tree.Token, "{"] expression SEMI[$expression.tree.Token, ";"] CLOSE_BRACE[$expression.tree.Token, "}"]
-> OPEN_BRACE[$expression.tree.Token, "{"] ^(RETURN[$expression.tree.Token, "return"] expression) CLOSE_BRACE[$expression.tree.Token, "}"]
| block ;
///////////////////////////////////////////////////////
// LINQ Section