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In ScriptableObject.callMethod use object itself as possible top scope source for to support of dynamic scoping.

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igor%mir2.org 2004-09-27 12:08:24 +00:00
parent 2490dd1652
commit e75e7213d3
2 changed files with 25 additions and 14 deletions
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31
js/rhino/src/org/mozilla/javascript/ScriptRuntime.java
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@ -1739,7 +1739,7 @@ public class ScriptRuntime {
String name)
{
if (cx.useDynamicScope) {
scope = locateDynamicScope(cx, scope);
scope = checkDynamicScope(cx.topCallScope, scope);
}
return ScriptableObject.getProperty(scope, name);
}
@ -1798,7 +1798,7 @@ public class ScriptRuntime {
}
// scope here is top scope
if (cx.useDynamicScope) {
scope = locateDynamicScope(cx, scope);
scope = checkDynamicScope(cx.topCallScope, scope);
}
if (ScriptableObject.hasProperty(scope, id)) {
return scope;
@ -1828,7 +1828,7 @@ public class ScriptRuntime {
// Find the top scope by walking up the scope chain.
bound = ScriptableObject.getTopLevelScope(scope);
if (cx.useDynamicScope) {
bound = locateDynamicScope(cx, bound);
bound = checkDynamicScope(cx.topCallScope, bound);
}
bound.put(id, bound, value);
}
@ -2854,22 +2854,27 @@ public class ScriptRuntime {
return result;
}
private static Scriptable locateDynamicScope(Context cx, Scriptable scope)
/**
* Return <tt>possibleDynamicScope</tt> if <tt>staticTopScope</tt>
* is present on its prototype chain and return <tt>staticTopScope</tt>
* otherwise.
* Should only be called when <tt>staticTopScope</tt> is top scope.
*/
static Scriptable checkDynamicScope(Scriptable possibleDynamicScope,
Scriptable staticTopScope)
{
// Return cx.topCallScope if scope is present on its prototype chain
// and return scope otherwise.
// Should only be called when scope is top scope.
if (cx.topCallScope == scope) {
return scope;
// Return cx.topCallScope if scope
if (possibleDynamicScope == staticTopScope) {
return possibleDynamicScope;
}
Scriptable proto = cx.topCallScope;
Scriptable proto = possibleDynamicScope;
for (;;) {
proto = proto.getPrototype();
if (proto == scope) {
return cx.topCallScope;
if (proto == staticTopScope) {
return possibleDynamicScope;
}
if (proto == null) {
return scope;
return staticTopScope;
}
}
}

8
js/rhino/src/org/mozilla/javascript/ScriptableObject.java
View File

@ -1482,7 +1482,13 @@ public abstract class ScriptableObject implements Scriptable, Serializable,
throw ScriptRuntime.notFunctionError(obj, methodName);
}
Function fun = (Function)funObj;
Scriptable scope = fun.getParentScope();
Scriptable scope = ScriptableObject.getTopLevelScope(fun);
// XXX: The following is only necessary for dynamic scope setup,
// but to check for that Context instance is required.
// Since it should not harm non-dynamic scope setup, do it always
// for now.
Scriptable dynamicScope = ScriptableObject.getTopLevelScope(obj);
scope = ScriptRuntime.checkDynamicScope(dynamicScope, scope);
if (cx != null) {
return fun.call(cx, scope, obj, args);
} else {