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NativeJavaMethod.add is removed. It allows to assume that after NativeJavaMethod constructor methods array will remain the same, which I will use in the following patch to add caching of Method.getParameterTypes.

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Instead of calling NativeJavaMethod.add, JavaMembers assemble the method list directly and then pass it to NativeJavaMethod when done.
This commit is contained in:
igor%mir2.org 2003-07-06 18:59:30 +00:00
parent 2dd779b626
commit 32619aac8e
2 changed files with 117 additions and 73 deletions
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174
js/rhino/src/org/mozilla/javascript/JavaMembers.java
View File

@ -281,18 +281,50 @@ class JavaMembers
boolean isStatic = Modifier.isStatic(mods);
Hashtable ht = isStatic ? staticMembers : members;
String name = method.getName();
NativeJavaMethod fun = (NativeJavaMethod) ht.get(name);
if (fun == null) {
fun = new NativeJavaMethod(method, name);
if (scope != null) {
fun.setPrototype(
ScriptableObject.getFunctionPrototype(scope));
}
ht.put(name, fun);
Object value = ht.get(name);
if (value == null) {
ht.put(name, method);
} else {
fun.add(method);
ObjArray overloadedMethods;
if (value instanceof ObjArray) {
overloadedMethods = (ObjArray)value;
} else {
if (!(value instanceof Method)) Context.codeBug();
// value should be instance of Method as reflectMethods is
// called when staticMembers and members are empty
overloadedMethods = new ObjArray();
overloadedMethods.add(value);
ht.put(name, overloadedMethods);
}
overloadedMethods.add(method);
}
}
initNativeMethods(staticMembers, scope);
initNativeMethods(members, scope);
}
private static void initNativeMethods(Hashtable ht, Scriptable scope)
{
Enumeration e = ht.keys();
while (e.hasMoreElements()) {
String name = (String)e.nextElement();
Method[] methods;
Object value = ht.get(name);
if (value instanceof Method) {
methods = new Method[1];
methods[0] = (Method)value;
} else {
ObjArray overloadedMethods = (ObjArray)value;
if (overloadedMethods.size() < 2) Context.codeBug();
methods = new Method[overloadedMethods.size()];
overloadedMethods.toArray(methods);
}
NativeJavaMethod fun = new NativeJavaMethod(methods);
if (scope != null) {
fun.setPrototype(ScriptableObject.getFunctionPrototype(scope));
}
ht.put(name, fun);
}
}
private void reflectFields(Scriptable scope)
@ -371,12 +403,16 @@ class JavaMembers
// Make the bean property name.
String beanPropertyName = nameComponent;
if (Character.isUpperCase(nameComponent.charAt(0))) {
char ch0 = nameComponent.charAt(0);
if (Character.isUpperCase(ch0)) {
if (nameComponent.length() == 1) {
beanPropertyName = nameComponent.substring(0, 1).toLowerCase();
} else if (!Character.isUpperCase(nameComponent.charAt(1))) {
beanPropertyName = Character.toLowerCase(nameComponent.charAt(0)) +
nameComponent.substring(1);
beanPropertyName = nameComponent.toLowerCase();
} else {
char ch1 = nameComponent.charAt(1);
if (!Character.isUpperCase(ch1)) {
beanPropertyName = Character.toLowerCase(ch0)
+nameComponent.substring(1);
}
}
}
@ -391,61 +427,25 @@ class JavaMembers
continue;
NativeJavaMethod getJavaMethod = (NativeJavaMethod) method;
// Grab and inspect the getter method; does it have an empty parameter list,
// with a return value (eg. a getSomething() or isSomething())?
Class[] params;
Method[] getMethods = getJavaMethod.methods;
Class type;
if (getMethods != null &&
getMethods.length == 1 &&
(type = getMethods[0].getReturnType()) != null &&
(params = getMethods[0].getParameterTypes()) != null &&
params.length == 0)
{
// Make sure the method static-ness is preserved for this property.
if (isStatic && !Modifier.isStatic(getMethods[0].getModifiers()))
continue;
Method getMethod = extractGetMethod(getJavaMethod, isStatic);
if (getMethod != null) {
// We have a getter. Now, do we have a setter?
Method setMethod = null;
String setter = "set" + nameComponent;
String setter = "set".concat(nameComponent);
if (ht.containsKey(setter)) {
// Is this value a method?
method = ht.get(setter);
if (method instanceof NativeJavaMethod) {
//
// Note: it may be preferable to allow NativeJavaMethod.findFunction()
// to find the appropriate setter; unfortunately, it requires an
// instance of the target arg to determine that.
//
// Make two passes: one to find a method with direct type assignment,
// and one to find a widening conversion.
NativeJavaMethod setJavaMethod = (NativeJavaMethod) method;
Method[] setMethods = setJavaMethod.methods;
for (int pass = 1; pass <= 2 && setMethod == null; ++pass) {
for (int i = 0; i < setMethods.length; ++i) {
if (setMethods[i].getReturnType() == Void.TYPE &&
(!isStatic || Modifier.isStatic(setMethods[i].getModifiers())) &&
(params = setMethods[i].getParameterTypes()) != null &&
params.length == 1 ) {
if ((pass == 1 && params[0] == type) ||
(pass == 2 && params[0].isAssignableFrom(type))) {
setMethod = setMethods[i];
break;
}
}
}
}
NativeJavaMethod njm = (NativeJavaMethod) method;
Class type = getMethod.getReturnType();
setMethod = extractSetMethod(type, njm, isStatic);
}
}
// Make the property.
BeanProperty bp = new BeanProperty(getMethods[0], setMethod);
BeanProperty bp = new BeanProperty(getMethod, setMethod);
toAdd.put(beanPropertyName, bp);
}
}
@ -459,6 +459,66 @@ class JavaMembers
}
}
private static Method extractGetMethod(NativeJavaMethod njm,
boolean isStatic)
{
// Grab and inspect the getter method; does it have an empty parameter
// list with a return value (eg. a getSomething() or isSomething())?
Method[] methods = njm.methods;
if (methods.length == 1) {
Method method = methods[0];
// Make sure the method static-ness is preserved for this property.
if (!isStatic || Modifier.isStatic(method.getModifiers())) {
Class[] params = method.getParameterTypes();
if (params != null && params.length == 0) {
Class type = method.getReturnType();
if (type != null && type != Void.TYPE) {
return method;
}
}
}
}
return null;
}
private static Method extractSetMethod(Class type,
NativeJavaMethod njm,
boolean isStatic)
{
//
// Note: it may be preferable to allow NativeJavaMethod.findFunction()
// to find the appropriate setter; unfortunately, it requires an
// instance of the target arg to determine that.
//
// Make two passes: one to find a method with direct type assignment,
// and one to find a widening conversion.
Method[] methods = njm.methods;
for (int pass = 1; pass <= 2; ++pass) {
for (int i = 0; i < methods.length; ++i) {
Method method = methods[i];
if (!isStatic || Modifier.isStatic(method.getModifiers())) {
if (method.getReturnType() == Void.TYPE) {
Class[] params = method.getParameterTypes();
if (params != null && params.length == 1) {
if (pass == 1) {
if (params[0] == type) {
return method;
}
} else {
if (pass != 2) Context.codeBug();
if (params[0].isAssignableFrom(type)) {
return method;
}
}
}
}
}
}
}
return null;
}
Hashtable getFieldAndMethodsObjects(Scriptable scope, Object javaObject,
boolean isStatic)
{

16
js/rhino/src/org/mozilla/javascript/NativeJavaMethod.java
View File

@ -68,22 +68,6 @@ public class NativeJavaMethod extends BaseFunction
this.functionName = name;
}
public void add(Method method)
{
if (functionName == null) {
functionName = method.getName();
} else if (!functionName.equals(method.getName())) {
throw new RuntimeException("internal method name mismatch");
}
// XXX a more intelligent growth algorithm would be nice
int len = methods == null ? 0 : methods.length;
Method[] newMeths = new Method[len + 1];
for (int i = 0; i < len; i++)
newMeths[i] = methods[i];
newMeths[len] = method;
methods = newMeths;
}
private static String scriptSignature(Object value)
{
if (value == null) {