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UtilGeneral.jrag
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UtilGeneral.jrag
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/*
* DominoJ is an extension to Java for supporting method slots,
* and this project is an implementation of its compiler built on top of JastAddJ.
*
* Copyright (c) 2011-, YungYu Zhuang. All rights reserved.
*
* The contents of this file are licensed under the modified BSD License
* (please see the LICENSE file for the full text).
*/
/*
* Utilities for general purpose.
*/
import java.util.logging.*;
aspect UtilGeneral {
public class Pair<A, B> {
private A first;
private B second;
public Pair(A f, B s) {
first = f;
second = s;
};
public A getFirst() {
return first;
};
public B getSecond() {
return second;
};
}
/*
* allow using the annotation to specify a method should be transformed or not.
*/
public boolean Modifiers.hasAnnotation(TypeDecl type) {
return annotation(type) != null;
}
public boolean Modifiers.getAnnotation(TypeDecl type) {
Annotation a = annotation(type);
if(a != null && a.getNumElementValuePair() == 1 && a.getElementValuePair(0).getName().equals("value")) {
ElementValue value = a.getElementValuePair(0).getElementValue();
if(value instanceof ElementConstantValue) {
if(value.type().isBoolean())
return ((ElementConstantValue)value).getExpr().constant().booleanValue();
if(value.type().isInt())
return ((ElementConstantValue)value).getExpr().constant().intValue()==1;
}
}
return false;
}
public void Modifiers.setAnnotation(TypeDecl type, boolean b) {
Annotation a = new Annotation();
a.setID("annotation");
a.setAccess(type.createQualifiedAccess());
a.addElementValuePair(new ElementValuePair("value", new ElementConstantValue(new BooleanLiteral(b))));
insertModifier(a, 0);
}
public boolean MethodDecl.hasAnnotation(TypeDecl type) { return getModifiers().hasAnnotation(type); }
public boolean ConstructorDecl.hasAnnotation(TypeDecl type) { return getModifiers().hasAnnotation(type); }
public boolean MethodDecl.getAnnotation(TypeDecl type) { return getModifiers().getAnnotation(type); }
public boolean ConstructorDecl.getAnnotation(TypeDecl type) { return getModifiers().getAnnotation(type); }
public void MethodDecl.setAnnotation(TypeDecl type, boolean b) { getModifiers().setAnnotation(type, b); }
public void ConstructorDecl.setAnnotation(TypeDecl type, boolean b) { getModifiers().setAnnotation(type, b); }
public void Modifiers.insertModifier(Modifier m, int i) {
List<Modifier> list = getModifierList();
list.insertChild(m, i);
flushCache();
}
public void Modifiers.removeModifier(String id) {
int index = -1;
List<Modifier> list = getModifierList();
for(int i=0; i<list.getNumChild(); i++) {
if(list.getChild(i).getID().equals(id)) {
index = i;
}
}
if(index > -1) {
list.removeChild(index);
flushCaches();
}
}
/* for MethodDecl */
static public Access MethodDecl.getPrimitiveAccess(TypeDecl type) {
Access p = null;
if(type.isByte()) p = type.lookupType("java.lang", "Byte").createQualifiedAccess();
else if(type.isShort()) p = type.lookupType("java.lang", "Short").createQualifiedAccess();
else if(type.isInt()) p = type.lookupType("java.lang", "Integer").createQualifiedAccess();
else if(type.isLong()) p = type.lookupType("java.lang", "Long").createQualifiedAccess();
else if(type.isFloat()) p = type.lookupType("java.lang", "Float").createQualifiedAccess();
else if(type.isDouble()) p = type.lookupType("java.lang", "Double").createQualifiedAccess();
else if(type.isBoolean()) p = type.lookupType("java.lang", "Boolean").createQualifiedAccess();
else if(type.isChar()) p = type.lookupType("java.lang", "Character").createQualifiedAccess();
else System.out.println("cannot match primitive type " + type.name());
return p;
}
public Expr TypeDecl.getDefaultValue() {
if(isChar()) return new CharacterLiteral("\u0000");
else if(isNumericType()) return isPrimitiveType() ? new CastExpr(createQualifiedAccess(),
new IntegerLiteral(0))
: new IntegerLiteral(0);
else if(isBoolean()) return new BooleanLiteral(false);
else return new NullLiteral("null");
}
public void MethodDecl.insertParameter(ParameterDeclaration node, int i) {
List<ParameterDeclaration> list = (parent == null || state == null) ? getParameterListNoTransform() : getParameterList();
list.insertChild(node, i);
}
private int MethodDecl.closureIdIndex = 0;
public int MethodDecl.getClosureId() {
return closureIdIndex++;
}
/* done() */
/*
private boolean FieldDeclaration.done = false;
public boolean FieldDeclaration.done() {
if(done) return true;
done = true;
return false;
}
*/
private boolean MethodDecl.done = false;
public boolean MethodDecl.done() {
if(done) return true;
done = true;
return false;
}
private boolean ConstructorDecl.done = false;
public boolean ConstructorDecl.done() {
if(done) return true;
done = true;
return false;
}
/* for ClassDecl */
public void ClassDecl.createEmptyConstructor() {
Modifiers mods = new Modifiers();
mods.addModifier(new Modifier("public"));
ConstructorDecl cons = new ConstructorDecl(mods, name(), new List(), new List(), new Opt(), new Block());
addBodyDecl(cons);
flushCache();
//System.out.println("createEmptyConstructor: " + cons);
}
public ConstructorDecl ClassDecl.getConstructor() {
for(int i = 0; i < getNumBodyDecl(); i++) {
if(getBodyDecl(i) instanceof ConstructorDecl) {
return (ConstructorDecl)getBodyDecl(i);
}
}
return null;
}
public void ClassDecl.generateMethodsByConstructors() {
if(fakeGenerated) return;
//System.out.println("generateMethodsByConstructors for " + name());
Iterator iter = constructors().iterator();
while(iter.hasNext()) {
ConstructorDecl c = (ConstructorDecl)iter.next();
// generate fake methods
MethodDecl m = c.generateMethodDecl();
addMethodDecl(m);
}
flushCache();
fakeGenerated = true;
}
public boolean ClassDecl.fakeGenerated = false;
/* for TypeDecl */
public MethodDecl TypeDecl.createMemberMethod(String name, Access type, List<ParameterDeclaration> params, Block b, boolean is) {
Modifiers mods = new Modifiers();
mods.addModifier(new Modifier("public"));
if(is) mods.addModifier(new Modifier("static"));
if(b == null && isClassDecl()) mods.addModifier(new Modifier("abstract"));
MethodDecl md = new MethodDecl(mods, type, name, new List(), new List(), new Opt());
// print the name of the method created by the compiler.
//Access sys = hostType().lookupType("java.lang", "System").createQualifiedAccess();
//MethodAccess print = new MethodAccess("println", new List());
//print.addArg(new StringLiteral(name));
//b.insertStmt(new ExprStmt(new Dot(sys, new Dot(new VarAccess("out"), print))), 0);
md.setParameterList(params);
if(b == null) md.setBlockOpt(new Opt());
else md.setBlock(b);
addMethodDecl(md);
flushCache();
//System.out.println("createMemberMethod: " + b);
return md;
}
public boolean TypeDecl.hasMemberMethod(String name) {
Iterator iter = methodsIterator();
while(iter.hasNext()) {
MethodDecl m = (MethodDecl)iter.next();
if(m.name().equals(name)) return true;
}
return false;
}
public ArrayList<MethodDecl> TypeDecl.getMemberMethods(String name) {
ArrayList<MethodDecl> list = new ArrayList<MethodDecl>();
if(name.equals("constructor")) name = name();
Iterator iter = methodsIterator();
while(iter.hasNext()) {
MethodDecl m = (MethodDecl)iter.next();
if(m.name().equals(name)) list.add(m);
}
return list;
}
public boolean FieldDeclaration.generated = false;
public void TypeDecl.createMemberField(String name, String pkg, String cls, Modifiers mods, Expr init) {
createMemberField(name, lookupType(pkg, cls), mods, init);
}
public void TypeDecl.createMemberField(String name, TypeDecl type, Modifiers mods, Expr init) {
FieldDeclaration f = new FieldDeclaration(mods.fullCopy(), type.createQualifiedAccess(), name, new Opt(init));
f.generated = true;
getBodyDeclList().insertChild(f, 0);
flushCache();
//System.out.println("createMemberField: " + name);
}
public void TypeDecl.importPkgs() {
CompilationUnit cu = hostType().compilationUnit();
if(cu.importedTypes("ArrayList").size() <= 0 && cu.importedTypesOnDemand("ArrayList").size() <= 0) {
Access arraylist = hostType().lookupType("java.util", "ArrayList").createQualifiedAccess();
cu.addImportDecl(new SingleTypeImportDecl(arraylist));
cu.flushCache();
}
if(cu.importedTypes("Closure").size() <= 0 && cu.importedTypesOnDemand("Closure").size() <= 0) {
Access closure = hostType().lookupType("dominoj", "Closure").createQualifiedAccess();
cu.addImportDecl(new SingleTypeImportDecl(closure));
cu.flushCache();
}
if(cu.importedTypes("ClosureNoException").size() <= 0 && cu.importedTypesOnDemand("ClosureNoException").size() <= 0) {
Access cne = hostType().lookupType("dominoj", "ClosureNoException").createQualifiedAccess();
cu.addImportDecl(new SingleTypeImportDecl(cne));
cu.flushCache();
}
if(cu.importedTypes("MethodSlot").size() <= 0 && cu.importedTypesOnDemand("MethodSlot").size() <= 0) {
Access methodslot = hostType().lookupType("dominoj", "MethodSlot").createQualifiedAccess();
cu.addImportDecl(new SingleTypeImportDecl(methodslot));
cu.flushCache();
}
}
public void MethodAccess.insertArg(Expr node, int i) {
List<Expr> list = (parent == null || state == null) ? getArgListNoTransform() : getArgList();
list.insertChild(node, i);
}
public void Block.insertStmt(Stmt node, int index) {
List<Stmt> list = (parent == null || state == null) ? getStmtListNoTransform() : getStmtList();
list.insertChild(node, index);
}
public void Access.bottomupFlushCache() {
// bottom-up flushCache. otherwise, its parent such as AddExpr will be UnknownType.
ASTNode parent = this;
while(!(parent instanceof CompilationUnit)) {
parent.flushCache();
parent = parent.getParent();
}
//System.out.println("flushCache up to " + ((CompilationUnit)parent).pathName());
}
public boolean ASTNode.removeChild(ASTNode node) {
int found = -1;
for(int i=0; i<getNumChild(); i++) {
if(getChild(i) == node) {
found = i;
break;
}
}
if(found >= 0) {
removeChild(found);
flushCache();
return true;
}
return false;
}
}