"{ Encoding: utf8 }"

"

 COPYRIGHT (c) 2004 by eXept Software AG

              All Rights Reserved

 This software is furnished under a license and may be used

 only in accordance with the terms of that license and with the

 inclusion of the above copyright notice.   This software may not

 be provided or otherwise made available to, or used by, any

 other person.  No title to or ownership of the software is

 hereby transferred.

"

"{ Package: 'stx:libbasic' }"

"{ NameSpace: Smalltalk }"

nil subclass:#ProtoObject

	instanceVariableNames:''

	classVariableNames:''

	poolDictionaries:''

	category:'Kernel-Objects'

!

!ProtoObject class methodsFor:'documentation'!

copyright

"

 COPYRIGHT (c) 2004 by eXept Software AG

              All Rights Reserved

 This software is furnished under a license and may be used

 only in accordance with the terms of that license and with the

 inclusion of the above copyright notice.   This software may not

 be provided or otherwise made available to, or used by, any

 other person.  No title to or ownership of the software is

 hereby transferred.

"

!

documentation

"

    a minimum object without much protocol;

    Provides the minimum required to prevent inspectors from crashing,

    and debuggers from blocking.

    (i.e. instead of inheriting from nil, better inherit from this).

    Named after a similar class found in Dolphin-Smalltalk.

    [author:]

        Claus Gittinger (not much authoring, though)

"

! !

!ProtoObject class methodsFor:'helpers'!

shallowCopyOf:anObject

    "return a copy of anObject with shared subobjects (a shallow copy)

     i.e. the copy shares referenced instvars with its original."

%{  /* NOCONTEXT */

    int ninsts, spc, sz;

    OBJ theCopy;

    OBJ cls = __qClass(anObject);

    int flags = __intVal(__ClassInstPtr(cls)->c_flags);

    /*

     * bail out for special objects ..

     */

    if (((flags & ~ARRAYMASK) == 0)

     && ((flags & ARRAYMASK) != WKPOINTERARRAY)) {

        sz = __qSize(anObject);

        __PROTECT__(anObject);

        __qNew(theCopy, sz);    /* OBJECT ALLOCATION */

        __UNPROTECT__(anObject);

        if (theCopy) {

            cls = __qClass(anObject);

            spc = __qSpace(theCopy);

            theCopy->o_class = cls; __STORE_SPC(theCopy, cls, spc);

            sz = sz - OHDR_SIZE;

            if (sz) {

                char *src, *dst;

                src = (char *)(__InstPtr(anObject)->i_instvars);

                dst = (char *)(__InstPtr(theCopy)->i_instvars);

#ifdef bcopy4

                {

                    /* care for odd-number of longs */

                    int nW = sz >> 2;

                    if (sz & 3) {

                        nW++;

                    }

                    bcopy4(src, dst, nW);

                }

#else

                bcopy(src, dst, sz);

#endif

                flags &= ARRAYMASK;

                if (flags == POINTERARRAY) {

                    ninsts = __BYTES2OBJS__(sz);

                } else {

                    ninsts = __intVal(__ClassInstPtr(cls)->c_ninstvars);

                }

                if (ninsts) {

                    do {

                        OBJ el;

                        el = __InstPtr(theCopy)->i_instvars[ninsts-1];

                        __STORE_SPC(theCopy, el, spc);

                    } while (--ninsts);

                }

            }

            RETURN (theCopy);

        }

    }

%}.

    "/ fallBack for special objects & memoryAllocation failure case

    ^ self error:'ProtoObject>>#shallowCopyOf: failed'

! !

!ProtoObject methodsFor:'error handling'!

doesNotUnderstand:aMessage

    "this message is sent by the runtime system (VM) when

     a message is not understood by some object (i.e. there

     is no method for that selector). The original message has

     been packed into aMessage (i.e. the receiver, selector and

     any arguments) and the original receiver is then sent the

     #doesNotUnderstand: message.

     Here, we raise another signal which usually enters the debugger.

     You can of course redefine #doesNotUnderstand: in your classes

     to implement message delegation, 

     or handle the MessageNotUnderstood exception gracefully."

    <context: #return>

    ^ MessageNotUnderstood raiseRequestWith:aMessage

! !

!ProtoObject methodsFor:'inspecting'!

inspect

    "this method is required to allow inspection of the object"

    ^ (Object compiledMethodAt:#inspect)

        valueWithReceiver:self

        arguments:nil

        selector:#inspect

!

instVarAt:index

    "this method is required to allow inspection of the object"

    ^ (Object compiledMethodAt:#instVarAt:)

        valueWithReceiver:self

        arguments:{index}

        selector:#instVarAt:

!

isKindOf:aBehavior

    "this method is required Behavior>>#allSubInstancesDo:"

    aBehavior == Object ifTrue:[^ true].

    ^ (Object compiledMethodAt:#isKindOf:)

        valueWithReceiver:self

        arguments:{aBehavior}

        selector:#isKindOf:

!

perform:aSelector

    "this method is required to allow inspection of the object"

    ^ self perform:aSelector withArguments:#().

!

perform:aSelector with:arg1 

    "this method is required to allow inspection of the object"

    ^ self perform:aSelector withArguments:{arg1}.

!

perform:aSelector with:arg1 with:arg2

    "this method is required to allow inspection of the object"

    ^ self perform:aSelector withArguments:{arg1. arg2}.

!

perform:aSelector with:arg1 with:arg2 with:arg3

    "this method is required to allow inspection of the object"

    ^ self perform:aSelector withArguments:{arg1. arg2. arg3}.

!

perform:aSelector with:arg1 with:arg2 with:arg3 with:arg4

    "this method is required to allow inspection of the object"

    ^ self perform:aSelector withArguments:{arg1. arg2. arg3. arg4}.

!

perform:aSelector with:arg1 with:arg2 with:arg3 with:arg4 with:arg5

    "this method is required to allow inspection of the object"

    ^ self perform:aSelector withArguments:{arg1. arg2. arg3. arg4. arg5}.

!

perform:aSelector with:arg1 with:arg2 with:arg3 with:arg4 with:arg5 with:arg6

    "this method is required to allow inspection of the object"

    ^ self perform:aSelector withArguments:{arg1. arg2. arg3. arg4. arg5. arg6}.

!

perform:aSelector withArguments:argArray

    "send the message aSelector with all args taken from argArray

     to the receiver.

     1-to-1 Copy from the same method in Object!!"

    |numberOfArgs a1 a2 a3 a4 a5 a6 a7 a8 a9 a10 a11 a12 a13 a14 a15|

%{

#ifdef __SCHTEAM__

    return context.PERFORM_WITH_ARGUMENTS(self, aSelector, argArray);

#else

    REGISTER OBJ *argP;

    int nargs;

    OBJ l;

    if (__isArrayLike(argArray)) {

        nargs = __arraySize(argArray);

        argP = __arrayVal(argArray);

    } else {

        if (__isNonNilObject(argArray)) {

            static struct inlineCache ilcSize = __ILC0(@line);

            int i;

            numberOfArgs = (*ilcSize.ilc_func)(argArray, @symbol(size), nil, &ilcSize);

            if (!__isSmallInteger(numberOfArgs))

                goto bad;

            nargs = __intVal(numberOfArgs);

            argP = (OBJ *)(&a1);

            for (i=1; i <= nargs; i++) {

                *argP++ = __AT_(argArray, __mkSmallInteger(i));

            }

            argP = (OBJ *)(&a1);

        } else {

            nargs = 0;

        }

    }

    switch (nargs) {

        case 0:

            if (InterruptPending == nil) {

                static OBJ last0_0 = nil; static struct inlineCache ilc0_0 = __ILCPERF0(@line);

                static OBJ last0_1 = nil; static struct inlineCache ilc0_1 = __ILCPERF0(@line);

                static OBJ last0_2 = nil; static struct inlineCache ilc0_2 = __ILCPERF0(@line);

                static OBJ last0_3 = nil; static struct inlineCache ilc0_3 = __ILCPERF0(@line);

                static int flip0 = 0;

                struct inlineCache *pIlc;

                if (aSelector == last0_0) {

                    pIlc = &ilc0_0;

                } else if (aSelector == last0_1) {

                    pIlc = &ilc0_1;

                } else if (aSelector == last0_2) {

                    pIlc = &ilc0_2;

                } else if (aSelector == last0_3) {

                    pIlc = &ilc0_3;

                } else {

                    if (flip0 == 0) {

                        pIlc = &ilc0_0;

                        flip0 = 1;

                        last0_0 = aSelector;

                    } else if (flip0 == 1) {

                        pIlc = &ilc0_1;

                        flip0 = 2;

                        last0_1 = aSelector;

                    } else if (flip0 == 2) {

                        pIlc = &ilc0_2;

                        flip0 = 3;

                        last0_2 = aSelector;

                    } else {

                        pIlc = &ilc0_3;

                        flip0 = 0;

                        last0_3 = aSelector;

                    }

                    pIlc->ilc_func = __SEND0ADDR__;

                    if (pIlc->ilc_poly) {

                        __flushPolyCache(pIlc->ilc_poly);

                        pIlc->ilc_poly = 0;

                    }

                }

                RETURN ((*pIlc->ilc_func)(self, aSelector, nil, pIlc));

            } else {

                static struct inlineCache ilc0 = __DUMMYILCSELF0(@line+1);

                RETURN (_SEND0(self, aSelector, nil, &ilc0));

            }

        case 1:

            if (InterruptPending == nil) {

                static OBJ last1_0 = nil; static struct inlineCache ilc1_0 = __ILCPERF1(@line);

                static OBJ last1_1 = nil; static struct inlineCache ilc1_1 = __ILCPERF1(@line);

                static OBJ last1_2 = nil; static struct inlineCache ilc1_2 = __ILCPERF1(@line);

                static OBJ last1_3 = nil; static struct inlineCache ilc1_3 = __ILCPERF1(@line);

                static int flip1 = 0;

                struct inlineCache *pIlc;

                if (aSelector == last1_0) {

                    pIlc = &ilc1_0;

                } else if (aSelector == last1_1) {

                    pIlc = &ilc1_1;

                } else if (aSelector == last1_2) {

                    pIlc = &ilc1_2;

                } else if (aSelector == last1_3) {

                    pIlc = &ilc1_3;

                } else {

                    if (flip1 == 0) {

                        pIlc = &ilc1_0;

                        flip1 = 1;

                        last1_0 = aSelector;

                    } else if (flip1 == 1) {

                        pIlc = &ilc1_1;

                        flip1 = 2;

                        last1_1 = aSelector;

                    } else if (flip1 == 2) {

                        pIlc = &ilc1_2;

                        flip1 = 3;

                        last1_2 = aSelector;

                    } else {

                        pIlc = &ilc1_3;

                        flip1 = 0;

                        last1_3 = aSelector;

                    }

                    pIlc->ilc_func = __SEND1ADDR__;

                    if (pIlc->ilc_poly) {

                        __flushPolyCache(pIlc->ilc_poly);

                        pIlc->ilc_poly = 0;

                    }

                }

                RETURN ((*pIlc->ilc_func)(self, aSelector, nil, pIlc, argP[0]));

            } else {

                static struct inlineCache ilc1 = __DUMMYILCSELF1(@line+1);

                RETURN (_SEND1(self, aSelector, nil, &ilc1, argP[0]));

            }

        case 2:

            if (InterruptPending == nil) {

                static OBJ last2_0 = nil; static struct inlineCache ilc2_0 = __ILCPERF2(@line);

                static OBJ last2_1 = nil; static struct inlineCache ilc2_1 = __ILCPERF2(@line);

                static int flip2 = 0;

                struct inlineCache *pIlc;

                if (aSelector == last2_0) {

                    pIlc = &ilc2_0;

                } else if (aSelector == last2_1) {

                    pIlc = &ilc2_1;

                } else {

                    if (flip2 == 0) {

                        pIlc = &ilc2_0;

                        flip2 = 1;

                        last2_0 = aSelector;

                    } else {

                        pIlc = &ilc2_1;

                        flip2 = 0;

                        last2_1 = aSelector;

                    }

                    pIlc->ilc_func = __SEND2ADDR__;

                    if (pIlc->ilc_poly) {

                        __flushPolyCache(pIlc->ilc_poly);

                        pIlc->ilc_poly = 0;

                    }

                }

                RETURN ((*pIlc->ilc_func)(self, aSelector, nil, pIlc, argP[0], argP[1]));

            } else {

                static struct inlineCache ilc2 = __DUMMYILCSELF2(@line+1);

                RETURN (_SEND2(self, aSelector, nil, &ilc2, argP[0], argP[1]));

            }

        case 3:

            if (InterruptPending == nil) {

                static OBJ last3_0 = nil; static struct inlineCache ilc3_0 = __ILCPERF3(@line);

                static OBJ last3_1 = nil; static struct inlineCache ilc3_1 = __ILCPERF3(@line);

                static int flip3 = 0;

                struct inlineCache *pIlc;

                if (aSelector == last3_0) {

                    pIlc = &ilc3_0;

                } else if (aSelector == last3_1) {

                    pIlc = &ilc3_1;

                } else {

                    if (flip3 == 0) {

                        pIlc = &ilc3_0;

                        flip3 = 1;

                        last3_0 = aSelector;

                    } else {

                        pIlc = &ilc3_1;

                        flip3 = 0;

                        last3_1 = aSelector;

                    }

                    pIlc->ilc_func = __SEND3ADDR__;

                    if (pIlc->ilc_poly) {

                        __flushPolyCache(pIlc->ilc_poly);

                        pIlc->ilc_poly = 0;

                    }

                }

                RETURN ((*pIlc->ilc_func)(self, aSelector, nil, pIlc, argP[0], argP[1], argP[2]));

            } else {

                static struct inlineCache ilc3 = __DUMMYILCSELF3(@line+1);

                RETURN (_SEND3(self, aSelector, nil, &ilc3, argP[0], argP[1], argP[2]));

            }

        case 4:

            {

                static OBJ last4 = nil; static struct inlineCache ilc4 = __ILCPERF4(@line);

                if ((InterruptPending != nil) || (aSelector != last4)) {

                    ilc4.ilc_func = __SEND4ADDR__;

                    if (ilc4.ilc_poly) {

                        __flushPolyCache(ilc4.ilc_poly);

                        ilc4.ilc_poly = 0;

                    }

                    last4 = aSelector;

                }

                RETURN ( (*ilc4.ilc_func)(self, aSelector, nil, &ilc4,

                                                argP[0], argP[1], argP[2], argP[3]));

            }

        case 5:

            {

                static OBJ last5 = nil; static struct inlineCache ilc5 = __ILCPERF5(@line);

                if ((InterruptPending != nil) || (aSelector != last5)) {

                    ilc5.ilc_func = __SEND5ADDR__;

                    if (ilc5.ilc_poly) {

                        __flushPolyCache(ilc5.ilc_poly);

                        ilc5.ilc_poly = 0;

                    }

                    last5 = aSelector;

                }

                RETURN ( (*ilc5.ilc_func)(self, aSelector, nil, &ilc5,

                                                argP[0], argP[1], argP[2], argP[3], argP[4]));

            }

        case 6:

            {

                static OBJ last6 = nil; static struct inlineCache ilc6 = __ILCPERF6(@line);

                if ((InterruptPending != nil) || (aSelector != last6)) {

                    ilc6.ilc_func = __SEND6ADDR__;

                    if (ilc6.ilc_poly) {

                        __flushPolyCache(ilc6.ilc_poly);

                        ilc6.ilc_poly = 0;

                    }

                    last6 = aSelector;

                }

                RETURN ( (*ilc6.ilc_func)(self, aSelector, nil, &ilc6,

                                                argP[0], argP[1], argP[2], argP[3], argP[4],

                                                argP[5]));

            }

        case 7:

            {

                static OBJ last7 = nil; static struct inlineCache ilc7 = __ILCPERF7(@line);

                if ((InterruptPending != nil) || (aSelector != last7)) {

                    ilc7.ilc_func = __SEND7ADDR__;

                    if (ilc7.ilc_poly) {

                        __flushPolyCache(ilc7.ilc_poly);

                        ilc7.ilc_poly = 0;

                    }

                    last7 = aSelector;

                }

                RETURN ( (*ilc7.ilc_func)(self, aSelector, nil, &ilc7,

                                                argP[0], argP[1], argP[2], argP[3], argP[4],

                                                argP[5], argP[6]));

            }

        case 8:

            {

                static OBJ last8 = nil; static struct inlineCache ilc8 = __ILCPERF8(@line);

                if ((InterruptPending != nil) || (aSelector != last8)) {

                    ilc8.ilc_func = __SEND8ADDR__;

                    if (ilc8.ilc_poly) {

                        __flushPolyCache(ilc8.ilc_poly);

                        ilc8.ilc_poly = 0;

                    }