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Fixing http://bugzilla.mozilla.org/show_bug.cgi?id=192105 :

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The reason for the bug is that emitDirectConstructor generates code to call
setPrototype twice instead of setPrototype/setParentScope pair during new JS
object construction. The fix replaces that setup by a single call to
BaseFunction.createObject which is used by Interpreter as well.
This commit is contained in:
igor%mir2.org 2003-02-14 22:38:49 +00:00
parent a89b24e960
commit 485f42581c
1 changed files with 14 additions and 42 deletions
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56
js/rhino/src/org/mozilla/javascript/optimizer/Codegen.java
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@ -271,15 +271,8 @@ public class Codegen extends Interpreter {
/*
we generate ..
Scriptable directConstruct(<directCallArgs>) {
Scriptable newInstance = new NativeObject();
newInstance.setPrototype(getClassPrototype());
newInstance.setParentScope(getParentScope());
Object val = callDirect(<directCallArgs>);
// except that the incoming thisArg is discarded
// and replaced by newInstance
//
Scriptable newInstance = createObject(cx, scope);
Object val = callDirect(cx, scope, newInstance, <directCallArgs>);
if (val != null && val != Undefined.instance &&
val instanceof Scriptable)
{
@ -296,43 +289,22 @@ public class Codegen extends Interpreter {
flags);
int argCount = fnNode.getVariableTable().getParameterCount();
short firstLocal = (short)((4 + argCount * 3) + 1);
addByteCode(ByteCode.NEW, "org/mozilla/javascript/NativeObject");
addByteCode(ByteCode.DUP);
classFile.add(ByteCode.INVOKESPECIAL,
"org/mozilla/javascript/NativeObject",
"<init>", "()", "V");
astore(firstLocal);
aload(firstLocal);
aload((short)0);
addVirtualInvoke("org/mozilla/javascript/NativeFunction",
"getClassPrototype",
"()", "Lorg/mozilla/javascript/Scriptable;");
classFile.add(ByteCode.INVOKEINTERFACE,
"org/mozilla/javascript/Scriptable",
"setPrototype",
"(Lorg/mozilla/javascript/Scriptable;)",
"V");
aload(firstLocal);
aload((short)0);
addVirtualInvoke("org/mozilla/javascript/NativeFunction",
"getParentScope",
"()", "Lorg/mozilla/javascript/Scriptable;");
classFile.add(ByteCode.INVOKEINTERFACE,
"org/mozilla/javascript/Scriptable",
"setPrototype",
"(Lorg/mozilla/javascript/Scriptable;)",
"V");
int firstLocal = (4 + argCount * 3) + 1;
aload((short)0); // this
aload((short)1); // cx
aload((short)2); // scope
addVirtualInvoke("org/mozilla/javascript/BaseFunction",
"createObject",
"(Lorg/mozilla/javascript/Context;"
+"Lorg/mozilla/javascript/Scriptable;)",
"Lorg/mozilla/javascript/Scriptable;");
astore((short)firstLocal);
aload((short)0);
aload((short)1);
aload((short)2);
aload(firstLocal);
aload((short)firstLocal);
for (int i = 0; i < argCount; i++) {
aload((short)(4 + (i * 3)));
dload((short)(5 + (i * 3)));
@ -358,7 +330,7 @@ public class Codegen extends Interpreter {
addByteCode(ByteCode.ARETURN);
markLabel(exitLabel);
aload(firstLocal);
aload((short)firstLocal);
addByteCode(ByteCode.ARETURN);
classFile.stopMethod((short)(firstLocal + 2), null);