// checks (3) and (1)
private Expression genObjOperation(Context ctx, MClass srcClass, Expression srcExpr)
throws SemanticException {
Expression res = null;
// find operation
String opname = fOp.getText();
MOperation op = srcClass.operation(opname, true);
if (op != null) {
// check for isQuery operation with OCL body
if (!op.hasExpression())
throw new SemanticException(
fOp,
"Operation `"
+ srcClass.name()
+ "::"
+ op.signature()
+ "' cannot be used in OCL expression "
+ "(only side effect-free operations with a return type and an OCL expression as body may be used).");
try {
// constructor performs additional checks
res = new ExpObjOp(op, fArgExprs);
} catch (ExpInvalidException ex) {
throw new SemanticException(
fOp, "In operation call `" + srcClass.name() + "::" + opname + "': " + ex.getMessage());
}
} else {
// try standard operation
res = genStdOperation(ctx, fOp, opname, fArgExprs);
}
return res;
}
/** Handles shorthand notation for collect and expands to an explicit collect expression. */
private Expression collectShorthandWithArgs(String opname, Expression srcExpr)
throws SemanticException {
Expression res = null;
// c.op() 201 (5) with implicit (3,1)
CollectionType cType = (CollectionType) srcExpr.type();
Type elemType = cType.elemType();
if (elemType.isObjectType()) {
MClass srcClass = ((ObjectType) elemType).cls();
MOperation op = srcClass.operation(opname, true);
if (op != null) {
// check for isQuery operation with OCL body
if (!op.hasExpression())
throw new SemanticException(
fOp,
"Operation `"
+ srcClass.name()
+ "::"
+ op.signature()
+ "' cannot be used in OCL expression "
+ "(only side effect-free operations with a return type and an OCL expression as body may be used).");
// transform c.op(...) into c->collect($e | $e.op(...))
ExpVariable eVar = new ExpVariable("$e", elemType);
fArgExprs[0] = eVar;
try {
// constructor performs additional checks
res = new ExpObjOp(op, fArgExprs);
} catch (ExpInvalidException ex) {
throw new SemanticException(
fOp,
"In operation call `" + srcClass.name() + "::" + opname + "': " + ex.getMessage());
}
res = genImplicitCollect(srcExpr, res, elemType);
}
}
if (res == null) {
// try (1) predefined OCL operation
res = collectShorthandStdOp(opname, srcExpr, cType, elemType);
}
return res;
}
/** Handles shorthand notation for collect and expands to an explicit collect expression. */
private Expression collectShorthandWithOutArgs(String opname, Expression srcExpr)
throws SemanticException {
Expression res = null;
// c.op 200 (5) with implicit (2,4,1)
CollectionType cType = (CollectionType) srcExpr.type();
Type elemType = cType.elemType();
if (elemType.isObjectType()) {
MClass srcClass = ((ObjectType) elemType).cls();
MAttribute attr = srcClass.attribute(opname, true);
if (attr != null) {
// (2) attribute operation on object type (no arguments)
// transform c.a into c->collect($e | $e.a)
ExpVariable eVar = new ExpVariable("$e", elemType);
ExpAttrOp eAttr = new ExpAttrOp(attr, eVar);
res = genImplicitCollect(srcExpr, eAttr, elemType);
} else {
MAssociationEnd dstEnd = srcClass.navigableEnd(opname);
if (dstEnd != null) {
// (4) navigation operation on object type must be
// a role name
// transform c.r into c->collect($e | $e.r)
ExpVariable eVar = new ExpVariable("$e", elemType);
Expression eNav = genNavigation(fOp, srcClass, eVar, dstEnd);
res = genImplicitCollect(srcExpr, eNav, elemType);
}
}
}
if (res == null) {
// ! objectType || ! (attr || navigation)
// try (1) predefined OCL operation
res = collectShorthandStdOp(opname, srcExpr, cType, elemType);
}
return res;
}
private Expression gen1(Context ctx, Expression srcExpr) throws SemanticException {
Expression res = null;
String opname = fOp.getText();
Type srcType = srcExpr.type();
// generate argument expressions
fArgExprs = new Expression[fArgs.size() + 1];
fArgExprs[0] = srcExpr;
Iterator it = fArgs.iterator();
int i = 1;
while (it.hasNext()) {
ASTExpression astExpr = (ASTExpression) it.next();
fArgExprs[i++] = astExpr.gen(ctx);
}
// flags for various cases
final int SRC_SIMPLE_TYPE = 0x100;
final int SRC_OBJECT_TYPE = 0x200;
final int SRC_COLLECTION_TYPE = 0x400;
final int DOT = 0x010;
final int ARROW = 0x020;
final int NO_PARENTHESES = 0x000;
final int PARENTHESES = 0x001;
int opcase;
if (srcType.isObjectType()) opcase = SRC_OBJECT_TYPE;
else if (srcType.isCollection()) opcase = SRC_COLLECTION_TYPE;
else opcase = SRC_SIMPLE_TYPE;
opcase += fFollowsArrow ? ARROW : DOT;
opcase += fHasParentheses ? PARENTHESES : NO_PARENTHESES;
switch (opcase) {
case SRC_SIMPLE_TYPE + DOT + NO_PARENTHESES:
case SRC_SIMPLE_TYPE + DOT + PARENTHESES:
case SRC_COLLECTION_TYPE + ARROW + PARENTHESES:
case SRC_COLLECTION_TYPE + ARROW + NO_PARENTHESES:
// (1) predefined OCL operation
res = genStdOperation(ctx, fOp, opname, fArgExprs);
break;
case SRC_SIMPLE_TYPE + ARROW + NO_PARENTHESES:
case SRC_SIMPLE_TYPE + ARROW + PARENTHESES:
ctx.reportWarning(
fOp,
"application of `"
+ opname
+ "' to a single value should be done with `.' "
+ "instead of `->'.");
// (1) predefined OCL operation
res = genStdOperation(ctx, fOp, opname, fArgExprs);
break;
case SRC_OBJECT_TYPE + DOT + NO_PARENTHESES:
MClass srcClass = ((ObjectType) srcType).cls();
MAttribute attr = srcClass.attribute(opname, true);
if (attr != null) {
// (2) attribute operation on object type (no arguments)
res = new ExpAttrOp(attr, srcExpr);
} else {
// (4) navigation operation on object type
// must be a role name
MAssociationEnd dstEnd = srcClass.navigableEnd(opname);
if (dstEnd != null) res = genNavigation(fOp, srcClass, srcExpr, dstEnd);
else {
// (1) predefined OCL operation
res = genStdOperation(ctx, fOp, opname, fArgExprs);
}
}
break;
case SRC_OBJECT_TYPE + DOT + PARENTHESES:
// (3) "isQuery" operation on object type (possibly with
// arguments) or (1)
MClass srcClass2 = ((ObjectType) srcType).cls();
res = genObjOperation(ctx, srcClass2, srcExpr);
break;
case SRC_OBJECT_TYPE + ARROW + NO_PARENTHESES:
case SRC_OBJECT_TYPE + ARROW + PARENTHESES:
// (6) set operation on single object resulting from
// navigation over associations with multiplicity zero
// or one (p. 7-13 of OMG UML 1.3)
if (srcExpr instanceof ExpNavigation) {
// first map object to set with internal operation
Expression mappedSrcExpr = new ExpObjAsSet(srcExpr);
// replace receiver in arg list
fArgExprs[0] = mappedSrcExpr;
try {
// lookup collection operation
res = ExpStdOp.create(opname, fArgExprs);
} catch (ExpInvalidException ex) {
throw new SemanticException(fOp, ex);
}
} else {
throw new SemanticException(
fOp,
"An arrow operation treating a single object as a "
+ "set may only be applied, if the object results "
+ "from a navigation to an association end with "
+ "multiplicity 0..1.");
}
break;
case SRC_COLLECTION_TYPE + DOT + NO_PARENTHESES:
// c.op 200 (5) with implicit (2,4,1)
if (Options.disableCollectShorthand)
throw new SemanticException(fOp, MSG_DISABLE_COLLECT_SHORTHAND);
res = collectShorthandWithOutArgs(opname, srcExpr);
break;
case SRC_COLLECTION_TYPE + DOT + PARENTHESES:
// c.op() 201 (5) with implicit (3,1)
if (Options.disableCollectShorthand)
throw new SemanticException(fOp, MSG_DISABLE_COLLECT_SHORTHAND);
res = collectShorthandWithArgs(opname, srcExpr);
break;
// throw new SemanticException(fOp,
// "If you want to apply an operation to a collection, please use an `->' instead of a
// `.'. If you are trying to apply the shorthand notation for `collect' - sorry, this is not
// yet supported. Please use the explicit notation.");
default:
throw new RuntimeException("case " + Integer.toHexString(opcase) + " not handled");
}
if (fIsPre) res.setIsPre();
return res;
}
/**
* Create a new link between the (source or target) domain and the corr object
*
* @throws org.tzi.use.uml.sys.MSystemException
*/
public MLink createMLink(
Context ctx, MObject corrObject, MClass domainClass, MObject domainObject)
throws MSystemException {
MLink link = null;
MAssociation assoc = null;
String roleName = "";
MClass corrClass = ctx.model().getClass(corrObject.cls().name());
Set tmpClasses = new HashSet();
if (domainObject.name().equals(fSourceObject.getText()))
if (fSourceRole != null) roleName = fSourceRole.getText();
else roleName = fSourceObject.getClass().getName().toLowerCase();
else if (fTargetRole != null) roleName = fTargetRole.getText();
else roleName = fTargetObject.getClass().getName().toLowerCase();
tmpClasses.add(corrClass);
tmpClasses.add(domainClass);
Set<MAssociation> assocs = ctx.model().getAssociationsBetweenClasses(tmpClasses);
if (assocs.size() == 0) {
ModelFactory mf = new ModelFactory();
List<VarDecl> emptyQualifiers = Collections.emptyList();
try {
assoc = mf.createAssociation(domainClass.name() + "_" + corrClass.name());
assoc.addAssociationEnd(
mf.createAssociationEnd(
domainClass,
roleName,
new MMultiplicity(1, 1),
MAggregationKind.NONE,
false,
emptyQualifiers));
assoc.addAssociationEnd(
mf.createAssociationEnd(
corrClass,
"cp" + "_" + assoc.name(),
MMultiplicity.ZERO_MANY,
MAggregationKind.NONE,
false,
emptyQualifiers));
ctx.model().addAssociation(assoc);
MSystem system = new MSystem(ctx.model());
MSystemState temp = system.state();
// copy object, link from ctx.systemState -> temp
// Objects
for (Iterator iter = ctx.systemState().allObjects().iterator(); iter.hasNext(); ) {
MObject obj = (MObject) iter.next();
temp.createObject(obj.cls(), obj.name());
}
// Links
for (Iterator iter = ctx.systemState().allLinks().iterator(); iter.hasNext(); ) {
MLink obj = (MLink) iter.next();
temp.insertLink(obj);
}
ctx.setfCurrentSystemState(system.state());
} catch (MInvalidModelException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
} else {
Iterator it = assocs.iterator();
if (!it.hasNext()) throw new MSystemException();
assoc = (MAssociation) it.next();
}
List tmpList = new ArrayList<MObject>();
tmpList.add(domainObject);
tmpList.add(corrObject);
if (!ctx.systemState().hasLink(assoc, tmpList, null)) {
link = ctx.systemState().createLink(assoc, tmpList, null);
} else {
link = ctx.systemState().linkBetweenObjects(assoc, tmpList).iterator().next();
}
return link;
}