private JCExpression getTypedParameter(
Parameter param, int argIndex, boolean varargs, java.util.List<ProducedType> parameterTypes) {
JCExpression argExpr;
if (!varargs) {
// The Callable has overridden one of the non-varargs call()
// methods
argExpr = gen.make().Ident(makeParamName(gen, argIndex));
} else {
// The Callable has overridden the varargs call() method
// so we need to index into the varargs array
argExpr =
gen.make().Indexed(gen.make().Ident(makeParamName(gen, 0)), gen.make().Literal(argIndex));
}
// make sure we unbox it if required
argExpr =
gen.expressionGen()
.applyErasureAndBoxing(
argExpr,
gen.typeFact().getObjectDeclaration().getType(), // it came in as Object
true, // it's completely erased
true, // it came in boxed
CodegenUtil.getBoxingStrategy(param), // see if we need to box
parameterTypes.get(argIndex), // see what type we need
0); // no flags
return argExpr;
}
private JCTree makeDefaultedCall(
int i, boolean isVariadic, java.util.List<ProducedType> parameterTypes) {
// collect every parameter
int a = 0;
ListBuffer<JCStatement> stmts = new ListBuffer<JCStatement>();
for (Parameter param : paramLists.getParameters()) {
// don't read default parameter values for forwarded calls
if (forwardCallTo != null && i == a) break;
// read the value
JCExpression paramExpression = getTypedParameter(param, a, i > 3, parameterTypes);
JCExpression varInitialExpression;
if (param.isDefaulted() || param.isSequenced()) {
if (i > 3) {
// must check if it's defined
JCExpression test =
gen.make()
.Binary(JCTree.GT, gen.makeSelect(getParamName(0), "length"), gen.makeInteger(a));
JCExpression elseBranch = makeDefaultValueCall(param, a);
varInitialExpression = gen.make().Conditional(test, paramExpression, elseBranch);
} else if (a >= i) {
// get its default value because we don't have it
varInitialExpression = makeDefaultValueCall(param, a);
} else {
// we must have it
varInitialExpression = paramExpression;
}
} else {
varInitialExpression = paramExpression;
}
// store it in a local var
JCStatement var =
gen.make()
.VarDef(
gen.make().Modifiers(Flags.FINAL),
gen.naming.makeUnquotedName(getCallableTempVarName(param)),
gen.makeJavaType(
parameterTypes.get(a),
CodegenUtil.isUnBoxed(param) ? 0 : gen.JT_NO_PRIMITIVES),
varInitialExpression);
stmts.append(var);
a++;
}
if (forwardCallTo != null) {
InvocationBuilder invocationBuilder =
InvocationBuilder.forCallableInvocation(gen, forwardCallTo, paramLists, i);
boolean prevCallableInv = gen.expressionGen().withinCallableInvocation(true);
try {
stmts.append(gen.make().Return(invocationBuilder.build()));
} finally {
gen.expressionGen().withinCallableInvocation(prevCallableInv);
}
} else if (isVariadic) {
// chain to n param typed method
List<JCExpression> args = List.nil();
// pass along the parameters
for (a = paramLists.getParameters().size() - 1; a >= 0; a--) {
Parameter param = paramLists.getParameters().get(a);
args = args.prepend(gen.makeUnquotedIdent(getCallableTempVarName(param)));
}
JCMethodInvocation chain =
gen.make().Apply(null, gen.makeUnquotedIdent(Naming.getCallableTypedMethodName()), args);
stmts.append(gen.make().Return(chain));
} else {
// insert the method body directly
stmts.appendList(this.body);
}
List<JCStatement> body = stmts.toList();
return makeCallMethod(body, i);
}