MWCC/compiler_and_linker/unsorted/CSOM.c

#include "compiler/CSOM.h"
#include "compiler/CClass.h"
#include "compiler/CDecl.h"
#include "compiler/CError.h"
#include "compiler/CException.h"
#include "compiler/CExpr.h"
#include "compiler/CFunc.h"
#include "compiler/CInit.h"
#include "compiler/CInt64.h"
#include "compiler/CMachine.h"
#include "compiler/CMangler.h"
#include "compiler/CParser.h"
#include "compiler/CPrep.h"
#include "compiler/CPrepTokenizer.h"
#include "compiler/CScope.h"
#include "compiler/CodeGen.h"
#include "compiler/CompilerTools.h"
#include "compiler/objects.h"
#include "compiler/scopes.h"
#include "compiler/types.h"
#include "cos.h"

// all pointers have been converted to UInt32 for the sake of maintaining 32-bit compat

typedef struct {
    SInt32 zero;
    /* struct somStaticClassInfo * */ UInt32 sci;
    /* void * */ UInt32 instanceDataToken;
    SInt32 reserved[3];
    /* void * */ UInt32 tokens[1];
} somClassDataStructure;

enum {
    mtVirtualMethod = 0,
    mtProcedure = 1,
    mtNonStatic = 2,
    mtEmpty = 3,
    mtDToken = 4
};

enum {
    pdUByte = 0,
    pdSByte = 1,
    pdUHalf = 2,
    pdSHalf = 3,
    pdULong = 4,
    pdSLong = 5,
    pdVLong = 6,
    pdVoid = 7,
    pdSFlt = 8,
    pdDFlt = 9,
    pdLFlt = 10,
    pdVSAgg = 11,
    pdNPtr = 12,
    pdLPtr = 13,
    pdSAgg = 14,
    pdLAgg = 15
};

enum {
    fgShortOrChars = 1,
    fgShortFloats = 2,
    fgAnyFloats = 4,
    fgAnyNon4Bytes = 8
};

enum {
    cfSharedStrings = 1,
    cfTempClass = 2,
    cfProxyClass = 4,
    cfClassAllocate = 0x100,
    cfClassDeallocate = 0x200,
    cfClassInit = 0x400,
    cfClassUninit = 0x800
};

typedef struct {
    UInt32 majorVersion;
    UInt32 minorVersion;
    UInt32 flags;
    UInt16 dataAlignment;
    UInt16 classTokenCount;
    UInt16 numDirectParents;
    UInt16 numMetaClasses;
    UInt16 numOverriddenAncestors;
    UInt16 numMigratedMethods;
    UInt16 numSelectInherited;
    UInt16 numUnused;
    UInt16 dummy2a[4];
} somStaticClassCounts;

typedef UInt8 somSlotUsage;
typedef UInt8 somSignatureInfo;
typedef UInt16 somOverrideData;
typedef UInt16 somMigratedMethods;
typedef UInt16 somSelectedInherited;
typedef UInt32 somParentVersions;

typedef struct {
    /* const char * */ UInt32 className;
    UInt32 instanceDataSize;
    /* const somParentVersions * */ UInt32 parentVersions;
    /* const somSlotUsage * */ UInt32 ttSlotUsage;
    /* const somSignatureInfo * */ UInt32 signatureInfo;
    /* const char * */ UInt32 methodNames;
    /* const somOverrideData * */ UInt32 overrideData;
    /* const somMigratedMethods * */ UInt32 migratedMethods;
    /* const somSelectedInherited * */ UInt32 selectedInherited;
    /* const void * */ UInt32 unused;
    /* const void * */ UInt32 dummy4b[4];
} somStaticClassDescription;

typedef struct somStaticClassInfo {
    UInt32 layoutVersion;
    /* somClassDataStructure * */ UInt32 tokenTable;
    /* somMethodPtr * */ UInt32 overrideMethods;
    /* somClassDataStructure ** */ UInt32 specifiedAncestry;
    /* somOpaque */ UInt32 DLLDesignator;
    /* somMethodPtr * */ UInt32 specialProcs;
    /* somRuntimeClassInfo * */ UInt32 runtimeClassInfo;
    SInt32 interesting;
    /* somClassDataStructure ** */ UInt32 actualAncestry;
    /* void * */ UInt32 extra[4];
    /* const somStaticClassCounts * */ UInt32 classCounts;
    somStaticClassDescription classDescription;
} somStaticClassInfo;

CSOMStub *csom_stubs;
static HashNameNode *csom_initname;
static HashNameNode *csom_uninitname;
static HashNameNode *csom_envname;
static HashNameNode *csom_selfname;

static FuncArg SOMIDT_arg1 = {
    NULL,
    NULL,
    NULL,
    TYPE(&void_ptr),
    0,
    0,
    0,
    0
};

static TypeFunc SOMIDT_type = {
    TYPEFUNC,
    0,
    &SOMIDT_arg1,
    NULL,
    TYPE(&void_ptr),
    0,
    0
};

void CSOM_Setup(Boolean flag) {
    if (!flag)
        csom_stubs = NULL;

    csom_initname = GetHashNameNodeExport("somInit");
    csom_uninitname = GetHashNameNodeExport("somUninit");
    csom_envname = GetHashNameNodeExport("Environment");
    csom_selfname = GetHashNameNodeExport("__somself");
}

void CSOM_Cleanup(void) {
    CSOMStub *stub;

    if (cparamblkptr->precompile != 1) {
        for (stub = csom_stubs; stub; stub = stub->next) {
            switch (stub->x10) {
                case 0:
                    CodeGen_SOMStub(stub->object, rt_som_glue1, stub->tclass->sominfo->classdataobject, stub->offset);
                    break;
                case 1:
                    CodeGen_SOMStub(stub->object, rt_som_glue2, stub->tclass->sominfo->classdataobject, stub->offset);
                    break;
                case 2:
                    CodeGen_SOMStub(stub->object, rt_som_glue3, stub->tclass->sominfo->classdataobject, stub->offset);
                    break;
                default:
                    CError_FATAL(132);
            }
        }
    }
}

static HashNameNode *CSOM_NameTranslate(HashNameNode *name) {
    if (name == constructor_name_node)
        name = csom_initname;
    else if (name == destructor_name_node)
        name = csom_uninitname;
    return name;
}

static Type *CSOM_FindClassType(HashNameNode *name) {
    Type *type;

    type = CScope_GetTagType(cscope_current, name);
    if (!type) {
        CPrep_ErrorName(CErrorStr281, name->name);
        type = &stvoid;
    }

    return type;
}

CW_INLINE UInt16 CSOM_GetTokenTableIndex(const Object *object) {
    CError_ASSERT(173, IS_TYPE_METHOD(object->type));
    return TYPE_METHOD(object->type)->x1E;
}

static SInt32 CSOM_GetTokenOffset(Object *object) {
    return 24 + 4 * CSOM_GetTokenTableIndex(object);
}

typedef struct TypeSig {
    UInt8 x0;
    UInt8 x1;
    UInt8 x2;
} TypeSig;

static int CSOM_GetTypeSig(TypeSig *sig, Type *type, Boolean flag) {
    if (type->size > 4)
        sig->x1 |= fgAnyNon4Bytes;

    switch (type->type) {
        case TYPEVOID:
            if (flag)
                return pdVoid;
            break;
        case TYPEINT:
        case TYPEENUM:
            if (is_unsigned(type)) {
                switch (type->size) {
                    case 1:
                        sig->x1 |= fgShortOrChars;
                        return pdUByte;
                    case 2:
                        sig->x1 |= fgShortOrChars;
                        return pdUHalf;
                    case 4:
                        return pdULong;
                    case 8:
                        return pdVLong;
                }
            } else {
                switch (type->size) {
                    case 1:
                        sig->x1 |= fgShortOrChars;
                        return pdSByte;
                    case 2:
                        sig->x1 |= fgShortOrChars;
                        return pdSHalf;
                    case 4:
                        return pdSLong;
                    case 8:
                        return pdVLong;
                }
            }
            break;
        case TYPEFLOAT:
            sig->x1 |= fgAnyFloats;
            switch (type->size) {
                case 4:
                    sig->x1 |= fgShortFloats;
                    return pdSFlt;
                case 8:
                    return pdDFlt;
                case 12:
                case 16:
                    return pdLFlt;
            }
            break;
        case TYPEPOINTER:
            return pdNPtr;
        case TYPESTRUCT:
        case TYPECLASS:
            if (flag) {
                if (type->size <= 2) {
                    sig->x1 |= fgShortOrChars;
                    return pdVSAgg;
                } else if (type->size <= 4) {
                    return pdSAgg;
                } else {
                    return pdLAgg;
                }
            }
            break;
    }

    CError_Error(CErrorStr273);
    return 5;
}

static void CSOM_GetFuncSig(TypeFunc *tfunc, Boolean flag) {
    FuncArg *arg;
    Boolean pendingData;
    UInt8 work;
    TypeSig sig;

    sig.x2 = CSOM_GetTypeSig(&sig, tfunc->functype, 1);
    sig.x1 = 0;
    sig.x0 = 0;

    for (arg = tfunc->args; arg; arg = arg->next) {
        if (arg == &elipsis || arg == &oldstyle || (++sig.x0 == 0)) {
            CError_Error(CErrorStr273);
            break;
        }

        CSOM_GetTypeSig(&sig, arg->type, 0);
    }

    if (flag) {
        if ((arg = tfunc->args)) {
            if (TYPE_METHOD(tfunc)->x26 == 0)
                arg = arg->next;
            if (arg && CMach_GetFunctionResultClass(tfunc) != 0)
                arg = arg->next;
        }

        AppendGListByte(&name_mangle_list, sig.x0);
        AppendGListByte(&name_mangle_list, (sig.x1 << 4) | sig.x2);
        if (sig.x1) {
            pendingData = 0;
            work = 0;
            while (arg) {
                work = (work << 4) | CSOM_GetTypeSig(&sig, arg->type, 0);
                if (pendingData) {
                    AppendGListByte(&name_mangle_list, work);
                    pendingData = 0;
                    work = 0;
                } else {
                    pendingData = 1;
                }
                arg = arg->next;
            }

            if (pendingData)
                AppendGListByte(&name_mangle_list, work << 4);
        }
    }
}

void CSOM_CheckFuncType(TypeFunc *tfunc) {
    CSOM_GetFuncSig(tfunc, 0);
}

static Object *CSOM_MakeObject(char *name1, char *name2, SInt32 size) {
    Object *object = CParser_NewCompilerDefDataObject();
    object->name = CParser_NameConcat(name1, name2);
    object->type = CDecl_NewStructType(size, 4);
    CScope_AddObject(object->nspace, object->name, OBJ_BASE(object));
    return object;
}

void CSOM_MakeSOMClass(TypeClass *tclass) {
    ClassList *base;

    for (base = tclass->bases; base; base = base->next) {
        if (!base->base->sominfo) {
            CError_Error(CErrorStr267);
            break;
        }
    }

    if (!tclass->sominfo) {
        SOMInfo *info = galloc(sizeof(SOMInfo));
        memclrw(info, sizeof(SOMInfo));
        tclass->sominfo = info;

        info->classdataobject = CSOM_MakeObject(tclass->classname->name, "ClassData", 28);
        info->classdataobject->flags = info->classdataobject->flags | OBJECT_FLAGS_40;
    }
}

static Boolean CSOM_IsTokenListFunc(Object *object) {
    Type *type = object->type;
    if (
        IS_TYPE_FUNC(type) &&
        !(TYPE_FUNC(type)->flags & FUNC_FLAGS_20) &&
        !TYPE_METHOD(type)->x26 &&
        (!(object->qual & Q_INLINE) || object->datatype == DVFUNC)
        )
        return 1;

    return 0;
}

static Object **CSOM_GetLexicalOrderMethodArray(TypeClass *tclass, int *resultCount) {
    Object *object;
    int count;
    Object **array;
    CScopeObjectIterator iter;

    count = 0;
    CScope_InitObjectIterator(&iter, tclass->nspace);
    while (1) {
        if (!(object = OBJECT(CScope_NextObjectIteratorObject(&iter))))
            break;

        if (IS_TYPE_METHOD(object->type)) {
            if (CSOM_IsTokenListFunc(object)) {
                if (TYPE_METHOD(object->type)->x1E > count)
                    count = TYPE_METHOD(object->type)->x1E;
            } else {
                TYPE_METHOD(object->type)->x1E = 0;
            }
        }
    }

    *resultCount = ++count;

    array = lalloc(sizeof(Object *) * count);
    memclrw(array, sizeof(Object *) * count);

    CScope_InitObjectIterator(&iter, tclass->nspace);
    while (1) {
        if (!(object = OBJECT(CScope_NextObjectIteratorObject(&iter))))
            break;

        if (CSOM_IsTokenListFunc(object))
            array[TYPE_METHOD(object->type)->x1E] = object;
    }

    return array;
}

void CSOM_ClassComplete(TypeClass *tclass) {
    Object *object;
    CScopeObjectIterator iter;
    SInt32 counter;
    SOMReleaseOrder *order;

    if (tclass->sominfo->order) {
        CScope_InitObjectIterator(&iter, tclass->nspace);
        while (1) {
            if (!(object = OBJECT(CScope_NextObjectIteratorObject(&iter))))
                break;

            if (CSOM_IsTokenListFunc(object)) {
                HashNameNode *name;

                name = CSOM_NameTranslate(object->name);
                for (order = tclass->sominfo->order, counter = 0; order; order = order->next, counter++) {
                    if (order->name == name) {
                        order->state = SOMMS_Method;
                        TYPE_METHOD(object->type)->x1E = counter;
                        break;
                    }
                }

                if (!order)
                    CError_Error(CErrorStr278, object);
            }
        }

        for (order = tclass->sominfo->order; order; order = order->next) {
            if (order->state == SOMMS_Deleted) {
                SOMReleaseOrder *order2;
                VClassList *vbase;
                for (vbase = tclass->vbases; vbase; vbase = vbase->next) {
                    for (order2 = vbase->base->sominfo->order; order2; order2 = order2->next) {
                        if (order->name == order2->name && order2->state == SOMMS_Method) {
                            order->state = SOMMS_Migrated;
                            break;
                        }
                    }
                }
            }
        }
    } else {
        Object **array;
        int arrayCount;
        SInt32 i;

        array = CSOM_GetLexicalOrderMethodArray(tclass, &arrayCount);
        for (i = counter = 0; i < arrayCount; i++) {
            object = array[i];
            if (object) {
                if (counter == 0 && copts.pedantic)
                    CError_Warning(CErrorStr291);
                TYPE_METHOD(object->type)->x1E = counter++;
            }
        }
    }

    CScope_InitObjectIterator(&iter, tclass->nspace);
    while (1) {
        NameSpaceObjectList *nsol;
        if (!(nsol = CScope_NextObjectIteratorObjectList(&iter)))
            break;

        if (nsol->object->otype == OT_OBJECT && nsol->next && nsol->next->object->otype == OT_OBJECT) {
            while (nsol) {
                if (
                    nsol->object->otype == OT_OBJECT &&
                    (!(OBJECT(nsol->object)->qual & Q_INLINE) || OBJECT(nsol->object)->datatype == DVFUNC)
                    )
                    CError_Error(CErrorStr270, nsol->object);
                nsol = nsol->next;
            }
        }
    }

    CScope_InitObjectIterator(&iter, tclass->nspace);
    while (1) {
        if (!(object = OBJECT(CScope_NextObjectIteratorObject(&iter))))
            break;

        if (!(object->qual & Q_INLINE)) {
            CError_ASSERT(529, IS_TYPE_FUNC(object->type));

            TYPE_FUNC(object->type)->flags |= FUNC_FLAGS_4;
            tclass->action = 1;
            while (1) {
                if (!(object = OBJECT(CScope_NextObjectIteratorObject(&iter))))
                    break;

                if (IS_TYPE_FUNC(object->type))
                    TYPE_FUNC(object->type)->flags &= ~FUNC_FLAGS_4;
            }
            break;
        }
    }

    if (tclass->sominfo->oidl_callstyle == 0) {
        Type *envType;
        envType = CSOM_FindClassType(csom_envname);

        CScope_InitObjectIterator(&iter, tclass->nspace);
        while (1) {
            if (!(object = OBJECT(CScope_NextObjectIteratorObject(&iter))))
                break;

            if (
                IS_TYPE_FUNC(object->type) &&
                TYPE_METHOD(object->type)->x26 == 0 &&
                !(TYPE_FUNC(object->type)->flags & FUNC_FLAGS_20) &&
                !(
                    TYPE_FUNC(object->type)->args &&
                    TYPE_FUNC(object->type)->args->next &&
                    IS_TYPE_POINTER_ONLY(TYPE_FUNC(object->type)->args->next->type) &&
                    TPTR_TARGET(TYPE_FUNC(object->type)->args->next->type) == envType
                    )
                )
            {
                CError_Error(CErrorStr282, object);
            }
        }
    }

    if (tclass->action == 0)
        CError_Error(CErrorStr280);
}

#ifdef __MWERKS__
#pragma options align=mac68k
#endif
typedef struct SOMOverride {
    struct SOMOverride *next;
    Object *a;
    Object *b;
} SOMOverride;

typedef struct SOMAncestor {
    struct SOMAncestor *next;
    TypeClass *tclass;
    SOMOverride *overrides;
    Boolean xC;
    Boolean xD;
} SOMAncestor;

typedef struct SOMMethod {
    struct SOMMethod *next;
    HashNameNode *name;
    union {
        Object *object;
        struct {
            UInt16 a;
            UInt16 b;
        } pair;
    } u;
    SOMMethodState state;
} SOMMethod;

typedef struct SOMGenerator {
    SOMMethod *methods;
    SOMAncestor *ancestors;
    Object *sciObj;
    Object *classAncestorsObj;
    Object *overrideProcsObj;
    Object *dlldFunc;
    Object *specialProcsObj;
    somStaticClassCounts counts;
    int overrideProcsCount;
    Boolean hasNew;
    Boolean hasDelete;
} SOMGenerator;
#ifdef __MWERKS__
#pragma options align=reset
#endif

static SOMAncestor *CSOM_FindAddAncestor(SOMGenerator *gen, TypeClass *tclass, TypeClass *ancestorClass, UInt16 *resultIndex) {
    SOMAncestor *ancestor;
    SOMAncestor *scan;
    UInt16 index;

    ancestor = gen->ancestors;
    for (scan = ancestor, index = 0; scan; scan = scan->next, index++) {
        if (scan->tclass == ancestorClass) {
            if (resultIndex)
                *resultIndex = index;
            return scan;
        }
    }

    if (ancestor) {
        index = 1;
        while (ancestor->next) {
            index++;
            ancestor = ancestor->next;
        }

        ancestor->next = lalloc(sizeof(SOMAncestor));
        memclrw(ancestor->next, sizeof(SOMAncestor));
        ancestor = ancestor->next;
    } else {
        index = 0;
        ancestor = lalloc(sizeof(SOMAncestor));
        memclrw(ancestor, sizeof(SOMAncestor));
        gen->ancestors = ancestor;
    }

    ancestor->tclass = ancestorClass;
    if (resultIndex)
        *resultIndex = index;
    return ancestor;
}

static void CSOM_GenerateOverrideIntroLists(SOMGenerator *gen, TypeClass *tclass) {
    Object *object;
    VClassList *vbase;
    ClassList *base;
    SOMMethod *method;
    SOMMethod **ptr;
    CScopeObjectIterator iter;

    for (base = tclass->bases; base; base = base->next) {
        SOMAncestor *ancestor = CSOM_FindAddAncestor(gen, tclass, base->base, NULL);
        ancestor->xD = 1;
        gen->counts.numDirectParents++;
    }

    if (tclass->sominfo->metaclass && tclass->sominfo->metaclass->sominfo) {
        SOMAncestor *ancestor = CSOM_FindAddAncestor(gen, tclass, tclass->sominfo->metaclass, NULL);
        ancestor->xC = 1;
        gen->counts.numMetaClasses++;
    }

    CScope_InitObjectIterator(&iter, tclass->nspace);
    while (1) {
        if (!(object = OBJECT(CScope_NextObjectIteratorObject(&iter))))
            break;

        if (IS_TYPE_FUNC(object->type) && (TYPE_FUNC(object->type)->flags & FUNC_FLAGS_20)) {
            for (vbase = tclass->vbases; vbase; vbase = vbase->next) {
                Object *object2;
                CScopeObjectIterator iter2;
                CScope_InitObjectIterator(&iter2, vbase->base->nspace);
                while (1) {
                    if (!(object2 = OBJECT(CScope_NextObjectIteratorObject(&iter2))))
                        break;

                    if (
                        IS_TYPE_FUNC(object2->type) &&
                        object->name == object2->name &&
                        object2->datatype == DVFUNC &&
                        !(TYPE_FUNC(object2->type)->flags & FUNC_FLAGS_20) &&
                        CClass_GetOverrideKind(TYPE_FUNC(object->type), TYPE_FUNC(object2->type), 0) != 0
                        )
                    {
                        SOMAncestor *ancestor;
                        SOMOverride *override;
                        ancestor = CSOM_FindAddAncestor(gen, tclass, vbase->base, NULL);
                        if (ancestor->overrides) {
                            override = lalloc(sizeof(SOMOverride));
                            memclrw(override, sizeof(SOMOverride));
                            override->next = ancestor->overrides;
                            ancestor->overrides = override;
                        } else {
                            override = lalloc(sizeof(SOMOverride));
                            memclrw(override, sizeof(SOMOverride));
                            ancestor->overrides = override;
                            gen->counts.numOverriddenAncestors++;
                        }
                        override->a = object;
                        override->b = object2;
                        break;
                    }
                }
            }
            gen->overrideProcsCount++;
        }
    }

    ptr = &gen->methods;
    if (tclass->sominfo->order) {
        SOMReleaseOrder *order;
        SOMReleaseOrder *order2;
        SInt32 index;
        UInt16 index2;

        for (order = tclass->sominfo->order, index = 0; order; order = order->next, index++) {
            method = lalloc(sizeof(SOMMethod));
            memclrw(method, sizeof(SOMMethod));
            *ptr = method;
            ptr = &method->next;

            method->name = order->name;
            method->state = order->state;
            switch (order->state) {
                case SOMMS_Migrated:
                    for (vbase = tclass->vbases; vbase; vbase = vbase->next) {
                        for (order2 = vbase->base->sominfo->order, index2 = 0; order2; order2 = order2->next, index2++) {
                            if (order->name == order2->name && order2->state == SOMMS_Method) {
                                CSOM_FindAddAncestor(gen, tclass, vbase->base, &method->u.pair.a);
                                method->u.pair.b = index2;
                                break;
                            }
                        }

                        if (order2)
                            break;
                    }
                    gen->counts.numMigratedMethods++;
                    break;

                case SOMMS_Method:
                    CScope_InitObjectIterator(&iter, tclass->nspace);
                    while (1) {
                        if (!(object = OBJECT(CScope_NextObjectIteratorObject(&iter))))
                            break;

                        if (
                            IS_TYPE_FUNC(object->type) &&
                            CSOM_NameTranslate(object->name) == order->name
                            )
                        {
                            CError_ASSERT(733, TYPE_METHOD(object->type)->x1E == index);
                            method->u.object = object;
                            break;
                        }
                    }

                    CError_ASSERT(737, object != NULL);
                    break;
            }

            gen->counts.classTokenCount++;
        }
    } else {
        Object **array;
        int arrayCount;
        SInt32 i;

        array = CSOM_GetLexicalOrderMethodArray(tclass, &arrayCount);
        for (i = 0; i < arrayCount; i++) {
            object = array[i];
            if (object) {
                method = lalloc(sizeof(SOMMethod));
                memclrw(method, sizeof(SOMMethod));
                *ptr = method;
                ptr = &method->next;

                method->u.object = object;
                method->name = object->name;
                method->state = SOMMS_Method;
                gen->counts.classTokenCount++;
            }
        }
    }
}

static void CSOM_GenerateClassAncestors(SOMGenerator *gen, TypeClass *tclass) {
    SOMAncestor *ancestor;
    Object *object;
    OLinkList *relocs;
    SInt32 size;
    char *buf;

    if (gen->ancestors) {
        object = CSOM_MakeObject(tclass->classname->name, "ClassAncestors", 4);
        object->sclass = TK_STATIC;

        relocs = NULL;
        size = 0;
        for (ancestor = gen->ancestors; ancestor; ancestor = ancestor->next) {
            OLinkList *reloc = lalloc(sizeof(OLinkList));
            reloc->next = relocs;
            relocs = reloc;
            reloc->obj = ancestor->tclass->sominfo->classdataobject;
            reloc->offset = size;
            reloc->somevalue = 0;
            size += 4;
        }

        buf = lalloc(size);
        memclrw(buf, size);
        object->type->size = size;
        CInit_DeclareData(object, buf, relocs, object->type->size);
        gen->classAncestorsObj = object;
    }
}

static void CSOM_GenerateOverrideProcs(SOMGenerator *gen, TypeClass *tclass) {
    SOMOverride *override;
    SOMAncestor *ancestor;
    Object *object;
    OLinkList *relocs;
    SInt32 size;
    SInt32 offset;
    char *buf;

    if (gen->overrideProcsCount) {
        size = gen->overrideProcsCount * 4;
        object = CSOM_MakeObject(tclass->classname->name, "OverrideProcs", size);
        object->sclass = TK_STATIC;

        relocs = NULL;
        offset = 0;
        for (ancestor = gen->ancestors; ancestor; ancestor = ancestor->next) {
            if (ancestor->overrides) {
                for (override = ancestor->overrides; override; override = override->next) {
                    OLinkList *reloc = lalloc(sizeof(OLinkList));
                    reloc->next = relocs;
                    relocs = reloc;
                    reloc->obj = override->a;
                    reloc->offset = offset;
                    reloc->somevalue = 0;
                    offset += 4;
                }
            }
        }

        buf = lalloc(size);
        memclrw(buf, size);
        CInit_DeclareData(object, buf, relocs, object->type->size);
        gen->overrideProcsObj = object;
    }
}

static Object *CSOM_GenerateOverrideData(SOMGenerator *gen) {
    SOMAncestor *ancestor;
    Object *object;
    short ancestorIndex;

    name_mangle_list.size = 0;
    for (ancestor = gen->ancestors, ancestorIndex = 0; ancestor; ancestor = ancestor->next, ancestorIndex++) {
        if (ancestor->overrides) {
            SOMOverride *override;
            short overrideCount;

            AppendGListWord(&name_mangle_list, CTool_EndianConvertWord16(ancestorIndex));

            override = ancestor->overrides;
            overrideCount = 0;
            while (override) {
                overrideCount++;
                override = override->next;
            }
            AppendGListWord(&name_mangle_list, CTool_EndianConvertWord16(overrideCount));

            for (override = ancestor->overrides; override; override = override->next) {
                AppendGListWord(&name_mangle_list, CTool_EndianConvertWord16(CSOM_GetTokenTableIndex(override->b)));
            }
        }
    }

    COS_LockHandle(name_mangle_list.data);
    object = CInit_DeclareString(*name_mangle_list.data, name_mangle_list.size, 0, 0);
    COS_UnlockHandle(name_mangle_list.data);
    return object;
}

static Object *CSOM_GenerateMigrateData(SOMGenerator *gen) {
    SOMMethod *method;
    Object *object;
    int index;

    name_mangle_list.size = 0;
    for (method = gen->methods, index = 0; method; method = method->next, index++) {
        if (method->state == SOMMS_Migrated) {
            AppendGListWord(&name_mangle_list, CTool_EndianConvertWord16(method->u.pair.a));
            AppendGListWord(&name_mangle_list, CTool_EndianConvertWord16(method->u.pair.b));
            AppendGListWord(&name_mangle_list, CTool_EndianConvertWord16(index));
        }
    }

    COS_LockHandle(name_mangle_list.data);
    object = CInit_DeclareString(*name_mangle_list.data, name_mangle_list.size, 0, 0);
    COS_UnlockHandle(name_mangle_list.data);
    return object;
}

static void CSOM_GenerateDLLDFunc(SOMGenerator *gen, TypeClass *tclass) {
    TypeFunc *tfunc;
    Object *object;

    tfunc = galloc(sizeof(TypeFunc));
    memclrw(tfunc, sizeof(TypeFunc));
    tfunc->type = TYPEFUNC;
    tfunc->functype = &stvoid;

    object = CParser_NewCompilerDefFunctionObject();
    object->type = TYPE(tfunc);
    object->sclass = TK_STATIC;
    object->name = CParser_NameConcat(tclass->classname->name, "DLLD");

    if (CScope_GetLocalObject(cscope_root, object->name))
        CError_Error(CErrorStr333, object);

    gen->dlldFunc = object;
    CFunc_GenerateDummyFunction(object);
}

static void CSOM_GenerateSpecialProcs(SOMGenerator *gen, TypeClass *tclass) {
    Object *newFunc;
    Object *deleteFunc;
    Object *object;
    OLinkList *relocs;
    SInt32 size;
    CScopeObjectIterator iter;
    char buf[16];

    newFunc = deleteFunc = NULL;
    CScope_InitObjectIterator(&iter, tclass->nspace);
    while (1) {
        if (!(object = OBJECT(CScope_NextObjectIteratorObject(&iter))))
            break;

        if (IS_TYPE_FUNC(object->type)) {
            if (object->name == CMangler_OperatorName(TK_NEW)) {
                newFunc = object;
                gen->hasNew = 1;
            } else if (object->name == CMangler_OperatorName(TK_DELETE)) {
                deleteFunc = object;
                gen->hasDelete = 1;
            }
        }
    }

    if (newFunc || deleteFunc) {
        object = CSOM_MakeObject(tclass->classname->name, "SpecialProcs", 4);
        object->sclass = TK_STATIC;

        relocs = NULL;
        size = 0;

        if (newFunc) {
            OLinkList *reloc = lalloc(sizeof(OLinkList));
            reloc->next = relocs;
            relocs = reloc;
            reloc->obj = newFunc;
            reloc->offset = size;
            reloc->somevalue = 0;
            size += 4;
        }

        if (deleteFunc) {
            OLinkList *reloc = lalloc(sizeof(OLinkList));
            reloc->next = relocs;
            relocs = reloc;
            reloc->obj = deleteFunc;
            reloc->offset = size;
            reloc->somevalue = 0;
            size += 4;
        }

        memclrw(buf, sizeof(buf));
        object->type->size = size;
        CInit_DeclareData(object, buf, relocs, object->type->size);
        gen->specialProcsObj = object;
    }
}

static Object *CSOM_GenerateParentVersion(SOMGenerator *gen) {
    SInt32 size;
    UInt32 *buf;
    SOMAncestor *ancestor;
    SInt32 offset;

    size = 8 * (gen->counts.numDirectParents + gen->counts.numMetaClasses);
    buf = lalloc(size);

    for (ancestor = gen->ancestors, offset = 0; ancestor; ancestor = ancestor->next) {
        if (ancestor->xC || ancestor->xD) {
            buf[offset++] = CTool_EndianConvertWord32(ancestor->tclass->sominfo->majorversion);
            buf[offset++] = CTool_EndianConvertWord32(ancestor->tclass->sominfo->minorversion);
        }
    }

    return CInit_DeclareString((char *) buf, size, 0, 0);
}

static void CSOM_SetNibble(char *buf, int offset, UInt8 value) {
    int i = offset >> 1;
    if (offset & 1) {
        int left = buf[i] & 0xF0;
        int right = value & 0xF;
        buf[i] = left | right;
    } else {
        int left = value << 4;
        int right = buf[i] & 0xF;
        buf[i] = left | right;
    }
}

static Object *CSOM_GenerateSlotUsage(SOMGenerator *gen) {
    SInt32 size;
    SOMMethod *method;
    char *buf;
    int offset;

    size = (gen->counts.classTokenCount + 1) / 2;
    buf = lalloc(size);
    memclrw(buf, size);

    for (method = gen->methods, offset = 0; method; method = method->next, offset++) {
        switch (method->state) {
            case SOMMS_Deleted:
            case SOMMS_Migrated:
                CSOM_SetNibble(buf, offset, mtEmpty);
                break;
            case SOMMS_Method:
                CSOM_SetNibble(buf, offset, mtVirtualMethod);
                break;
            default:
                CError_FATAL(1048);
        }
    }

    return CInit_DeclareString(buf, size, 0, 0);
}

static Object *CSOM_GenerateSignature(SOMGenerator *gen) {
    Object *object;
    SOMMethod *method;

    name_mangle_list.size = 0;

    for (method = gen->methods; method; method = method->next) {
        if (method->state == SOMMS_Method)
            CSOM_GetFuncSig(TYPE_FUNC(method->u.object->type), 1);
    }

    COS_LockHandle(name_mangle_list.data);
    object = CInit_DeclareString(*name_mangle_list.data, name_mangle_list.size, 0, 0);
    COS_UnlockHandle(name_mangle_list.data);
    return object;
}

static Object *CSOM_GenerateMethodNames(SOMGenerator *gen) {
    Object *object;
    SOMMethod *method;
    HashNameNode *name;

    name_mangle_list.size = 0;

    for (method = gen->methods; method; method = method->next) {
        if (method->name) {
            name = CSOM_NameTranslate(method->name);
            AppendGListID(&name_mangle_list, name->name);
        }
    }

    COS_LockHandle(name_mangle_list.data);
    object = CInit_DeclareString(*name_mangle_list.data, name_mangle_list.size, 0, 0);
    COS_UnlockHandle(name_mangle_list.data);
    return object;
}

static void CSOM_SetupClassCounts(SOMGenerator *gen, TypeClass *tclass, somStaticClassCounts *counts) {
    gen->counts.majorVersion = tclass->sominfo->majorversion;
    gen->counts.minorVersion = tclass->sominfo->minorversion;
    gen->counts.flags = cfSharedStrings;
    if (gen->hasNew)
        gen->counts.flags |= cfClassAllocate;
    if (gen->hasDelete)
        gen->counts.flags |= cfClassDeallocate;

    switch (tclass->align) {
        case 1:
            gen->counts.dataAlignment = 0;
            break;
        case 2:
            gen->counts.dataAlignment = 1;
            break;
        case 4:
            gen->counts.dataAlignment = 2;
            break;
        case 8:
            gen->counts.dataAlignment = 3;
            break;
        default:
            gen->counts.dataAlignment = 4;
            break;
    }

    gen->counts.numSelectInherited = 0;

    memclrw(counts, sizeof(somStaticClassCounts));
    counts->majorVersion = CTool_EndianConvertWord32(gen->counts.majorVersion);
    counts->minorVersion = CTool_EndianConvertWord32(gen->counts.minorVersion);
    counts->flags = CTool_EndianConvertWord32(gen->counts.flags);
    counts->dataAlignment = CTool_EndianConvertWord16(gen->counts.dataAlignment);
    counts->classTokenCount = CTool_EndianConvertWord16(gen->counts.classTokenCount);
    counts->numDirectParents = CTool_EndianConvertWord16(gen->counts.numDirectParents);
    counts->numMetaClasses = CTool_EndianConvertWord16(gen->counts.numMetaClasses);
    counts->numOverriddenAncestors = CTool_EndianConvertWord16(gen->counts.numOverriddenAncestors);
    counts->numMigratedMethods = CTool_EndianConvertWord16(gen->counts.numMigratedMethods);
    counts->numSelectInherited = CTool_EndianConvertWord16(gen->counts.numSelectInherited);
}

static void CSOM_GenerateSCIObject(SOMGenerator *gen, TypeClass *tclass) {
    Object *object;
    OLinkList *relocs;
    OLinkList *reloc;
    somStaticClassInfo sci;
    somStaticClassCounts classCounts;

    object = CSOM_MakeObject(tclass->classname->name, "SCI", sizeof(sci));
    object->sclass = TK_STATIC;

    memclrw(&sci, sizeof(sci));
    sci.layoutVersion = CTool_EndianConvertWord32(70);

    reloc = lalloc(sizeof(OLinkList));
    reloc->next = NULL;
    relocs = reloc;
    reloc->obj = tclass->sominfo->classdataobject;
    reloc->offset = 4;
    reloc->somevalue = 0;

    if (gen->overrideProcsObj) {
        reloc = lalloc(sizeof(OLinkList));
        reloc->next = relocs;
        relocs = reloc;
        reloc->obj = gen->overrideProcsObj;
        reloc->offset = 8;
        reloc->somevalue = 0;
    }

    if (gen->classAncestorsObj) {
        reloc = lalloc(sizeof(OLinkList));
        reloc->next = relocs;
        relocs = reloc;
        reloc->obj = gen->classAncestorsObj;
        reloc->offset = 12;
        reloc->somevalue = 0;
    }

    if (gen->dlldFunc) {
        reloc = lalloc(sizeof(OLinkList));
        reloc->next = relocs;
        relocs = reloc;
        reloc->obj = gen->dlldFunc;
        reloc->offset = 16;
        reloc->somevalue = 0;
    }

    if (gen->specialProcsObj) {
        reloc = lalloc(sizeof(OLinkList));
        reloc->next = relocs;
        relocs = reloc;
        reloc->obj = gen->specialProcsObj;
        reloc->offset = 20;
        reloc->somevalue = 0;
    }

    CSOM_SetupClassCounts(gen, tclass, &classCounts);

    reloc = lalloc(sizeof(OLinkList));
    reloc->next = relocs;
    relocs = reloc;
    reloc->obj = CInit_DeclareString((char *) &classCounts, sizeof(classCounts), 0, 0);
    reloc->offset = 52;
    reloc->somevalue = 0;

    reloc = lalloc(sizeof(OLinkList));
    reloc->next = relocs;
    relocs = reloc;
    reloc->obj = CInit_DeclareString(tclass->classname->name, strlen(tclass->classname->name) + 1, 0, 0);
    reloc->offset = 56;
    reloc->somevalue = 0;

    sci.classDescription.instanceDataSize = CTool_EndianConvertWord32(tclass->size);

    reloc = lalloc(sizeof(OLinkList));
    reloc->next = relocs;
    relocs = reloc;
    reloc->obj = CSOM_GenerateParentVersion(gen);
    reloc->offset = 64;
    reloc->somevalue = 0;

    if (gen->methods) {
        reloc = lalloc(sizeof(OLinkList));
        reloc->next = relocs;
        relocs = reloc;
        reloc->obj = CSOM_GenerateSlotUsage(gen);
        reloc->offset = 68;
        reloc->somevalue = 0;

        reloc = lalloc(sizeof(OLinkList));
        reloc->next = relocs;
        relocs = reloc;
        reloc->obj = CSOM_GenerateSignature(gen);
        reloc->offset = 72;
        reloc->somevalue = 0;

        reloc = lalloc(sizeof(OLinkList));
        reloc->next = relocs;
        relocs = reloc;
        reloc->obj = CSOM_GenerateMethodNames(gen);
        reloc->offset = 76;
        reloc->somevalue = 0;
    }

    if (gen->overrideProcsObj) {
        reloc = lalloc(sizeof(OLinkList));
        reloc->next = relocs;
        relocs = reloc;
        reloc->obj = CSOM_GenerateOverrideData(gen);
        reloc->offset = 80;
        reloc->somevalue = 0;
    }

    if (gen->counts.numMigratedMethods) {
        reloc = lalloc(sizeof(OLinkList));
        reloc->next = relocs;
        relocs = reloc;
        reloc->obj = CSOM_GenerateMigrateData(gen);
        reloc->offset = 84;
        reloc->somevalue = 0;
    }

    sci.classDescription.selectedInherited = 0;

    CInit_DeclareData(object, &sci, relocs, object->type->size);
    gen->sciObj = object;
}

static void CSOM_GenerateClassDataObject(SOMGenerator *gen, TypeClass *tclass) {
    void *buf;
    OLinkList *relocs;
    OLinkList *reloc;
    SInt32 size;
    SOMMethod *method;

    relocs = NULL;
    for (size = 24, method = gen->methods; method; method = method->next) {
        if (method->state == SOMMS_Method) {
            reloc = lalloc(sizeof(OLinkList));
            reloc->next = relocs;
            relocs = reloc;
            reloc->obj = method->u.object;
            reloc->offset = size;
            reloc->somevalue = 0;
        }
        size += 4;
    }

    buf = lalloc(size);
    memclrw(buf, size);

    reloc = lalloc(sizeof(OLinkList));
    reloc->next = relocs;
    relocs = reloc;
    reloc->obj = gen->sciObj;
    reloc->offset = 4;
    reloc->somevalue = 0;

    tclass->sominfo->classdataobject->type->size = size;
    CInit_DeclareData(tclass->sominfo->classdataobject, buf, relocs, tclass->sominfo->classdataobject->type->size);
}

void CSOM_GenerateClassStructures(TypeClass *tclass) {
    SOMGenerator gen;

    memclrw(&gen, sizeof(gen));
    CSOM_GenerateOverrideIntroLists(&gen, tclass);
    CSOM_GenerateClassAncestors(&gen, tclass);
    CSOM_GenerateOverrideProcs(&gen, tclass);
    CSOM_GenerateDLLDFunc(&gen, tclass);
    CSOM_GenerateSpecialProcs(&gen, tclass);
    CSOM_GenerateSCIObject(&gen, tclass);
    CSOM_GenerateClassDataObject(&gen, tclass);
}

static TypeClass *CSOM_GetCurrentSOMClass(void) {
    if (cscope_current->theclass && cscope_current->theclass->sominfo)
        return cscope_current->theclass;

    CError_Error(CErrorStr277);
    return NULL;
}

void CSOM_PragmaReleaseOrder(void) {
    TypeClass *tclass;
    SOMReleaseOrder *firstOrder;
    SOMReleaseOrder *order;
    SOMReleaseOrder **ptr;
    Boolean flag;
    short token;

    if (!(tclass = CSOM_GetCurrentSOMClass()))
        return;

    token = CPrep_PragmaLex(0);
    if (token != '(') {
        if (token != TK_IDENTIFIER) {
            CPrep_Error(CErrorStr114);
            return;
        }

        if (!strcmp(tkidentifier->name, "list")) {
            token = CPrep_PragmaLex(0);
            if (token != TK_IDENTIFIER) {
                CPrep_Error(CErrorStr107);
                return;
            }
        }

        flag = 1;
    } else {
        flag = 0;
        token = CPrep_PragmaLex(0);
    }

    firstOrder = NULL;
    if (flag || token != ')') {
        ptr = &firstOrder;
        while (1) {
            if (token != TK_IDENTIFIER) {
                CPrep_Error(CErrorStr107);
                return;
            }

            for (order = firstOrder; order; order = order->next) {
                if (order->name == tkidentifier) {
                    CError_Error(CErrorStr122, tkidentifier->name);
                    return;
                }
            }

            order = galloc(sizeof(SOMReleaseOrder));
            *ptr = order;
            ptr = &order->next;

            order->next = NULL;
            order->name = tkidentifier;
            order->state = SOMMS_Deleted;

            if (flag) {
                token = CPrep_PragmaLex(1);
                if (!token)
                    break;
            } else {
                token = CPrep_PragmaLex(0);
                if (token == ')')
                    break;
            }

            if (token != ',') {
                CPrep_Error(CErrorStr116);
                return;
            }

            token = CPrep_PragmaLex(flag);
        }
    }

    tclass->sominfo->order = firstOrder;
}

void CSOM_PragmaClassVersion(void) {
    Type *type;

    if (CPrep_PragmaLex(0) != '(') {
        CPrep_Error(CErrorStr114);
        return;
    }

    if (CPrep_PragmaLex(0) != TK_IDENTIFIER) {
        CPrep_Error(CErrorStr107);
        return;
    }

    type = CScope_GetTagType(cscope_current, tkidentifier);
    if (!(type && IS_TYPE_CLASS(type) && TYPE_CLASS(type)->sominfo)) {
        CPrep_ErrorName(CErrorStr276, tkidentifier->name);
        return;
    }

    if (CPrep_PragmaLex(0) != ',') {
        CPrep_Error(CErrorStr116);
        return;
    }

    if (CPrep_PragmaLex(0) != TK_INTCONST) {
        CPrep_Error(CErrorStr186);
        return;
    }

    TYPE_CLASS(type)->sominfo->majorversion = CInt64_GetULong(&tkintconst);

    if (CPrep_PragmaLex(0) != ',') {
        CPrep_Error(CErrorStr116);
        return;
    }

    if (CPrep_PragmaLex(0) != TK_INTCONST) {
        CPrep_Error(CErrorStr186);
        return;
    }

    TYPE_CLASS(type)->sominfo->minorversion = CInt64_GetULong(&tkintconst);

    if (CPrep_PragmaLex(0) != ')') {
        CPrep_Error(CErrorStr115);
        return;
    }
}

void CSOM_PragmaMetaClass(void) {
    Type *type;
    Type *type2;

    if (CPrep_PragmaLex(0) != '(') {
        CPrep_Error(CErrorStr114);
        return;
    }

    if (CPrep_PragmaLex(0) != TK_IDENTIFIER) {
        CPrep_Error(CErrorStr107);
        return;
    }

    type = CScope_GetTagType(cscope_current, tkidentifier);
    if (!(type && IS_TYPE_CLASS(type) && TYPE_CLASS(type)->sominfo)) {
        CPrep_ErrorName(CErrorStr276, tkidentifier->name);
        return;
    }

    if (CPrep_PragmaLex(0) != ',') {
        CPrep_Error(CErrorStr116);
        return;
    }

    if (CPrep_PragmaLex(0) != TK_IDENTIFIER) {
        CPrep_Error(CErrorStr107);
        return;
    }

    type2 = CScope_GetTagType(cscope_current, tkidentifier);
    if (!(type2 && IS_TYPE_CLASS(type2) && TYPE_CLASS(type2)->sominfo)) {
        CPrep_ErrorName(CErrorStr276, tkidentifier->name);
        return;
    }

    TYPE_CLASS(type)->sominfo->metaclass = TYPE_CLASS(type2);

    if (CPrep_PragmaLex(0) != ')') {
        CPrep_Error(CErrorStr115);
        return;
    }
}

void CSOM_PragmaCallStyle(void) {
    TypeClass *tclass;

    if (!(tclass = CSOM_GetCurrentSOMClass()))
        return;

    if (CPrep_PragmaLex(0) != TK_IDENTIFIER) {
        CPrep_Error(CErrorStr107);
        return;
    }

    if (!strcmp(tkidentifier->name, "IDL")) {
        tclass->sominfo->oidl_callstyle = 0;
        return;
    }

    if (!strcmp(tkidentifier->name, "OIDL")) {
        tclass->sominfo->oidl_callstyle = 1;
        return;
    }

    CPrep_Error(CErrorStr186);
}

void CSOM_FixNewDeleteFunctype(TypeFunc *tfunc) {
    FuncArg *arg = CParser_NewFuncArg();
    arg->name = GetHashNameNodeExport("__theclass");
    arg->type = CDecl_NewPointerType(CSOM_FindClassType(GetHashNameNodeExport("SOMClass")));
    arg->next = tfunc->args;
    tfunc->args = arg;
}

static Object *CSOM_FindRTFunc(char *namestr, char *sig) {
    NameSpaceObjectList *nsol;
    Object *object;
    FuncArg *arg;

    if (
        (nsol = CScope_GetLocalObject(cscope_root, GetHashNameNodeExport(namestr))) &&
        nsol->object->otype == OT_OBJECT
        )
    {
        object = OBJECT(nsol->object);
        if (
            IS_TYPE_FUNC(object->type) &&
            *(sig++) == 'p' &&
            IS_TYPE_POINTER_ONLY(TYPE_FUNC(object->type)->functype)
            )
        {
            for (arg = TYPE_FUNC(object->type)->args; arg; arg = arg->next) {
                switch (*(sig++)) {
                    case 'p':
                        if (IS_TYPE_POINTER_ONLY(arg->type))
                            continue;
                        break;
                    case 'i':
                        if (arg->type == TYPE(&stsignedint))
                            continue;
                        break;
                    case 'I':
                        if (arg->type == TYPE(&stunsignedint))
                            continue;
                        break;
                    case 'l':
                        if (arg->type == TYPE(&stsignedlong))
                            continue;
                        break;
                    case 'L':
                        if (arg->type == TYPE(&stunsignedlong))
                            continue;
                        break;
                }
                break;
            }

            if (arg == NULL && *sig == 0)
                return object;
        }

        CError_Error(CErrorStr275, namestr);
    } else {
        CError_Error(CErrorStr274, namestr);
    }

    return NULL;
}

static ENode *CSOM_MakeTempCondition(ENode *left, ENode *cond, ENode *expr1, ENode *right) {
    ENode *expr;

    expr = lalloc(sizeof(ENode));
    expr->type = ECOND;
    expr->cost = 0;
    expr->flags = 0;
    expr->rtype = &stvoid;
    expr->data.cond.cond = cond;
    expr->data.cond.expr1 = expr1;
    expr->data.cond.expr2 = nullnode();
    expr->data.cond.expr2->rtype = &stvoid;

    if (left)
        expr = makediadicnode(left, expr, ECOMMA);

    if (right) {
        expr = makediadicnode(expr, right, ECOMMA);
        expr->rtype = right->rtype;
    }

    return expr;
}

ENode *CSOM_New(TypeClass *tclass) {
    Object *newFunc;
    ENode *expr;

    if (tk == '(') {
        if ((tk = lex()) == ')') {
            tk = lex();
        } else {
            CError_Error(CErrorStr272);
        }
    }

    if (!copts.som_env_check || !copts.som_call_optimize) {
        newFunc = CSOM_FindRTFunc("somNewObjectInstance", "ppll");
        if (!newFunc)
            return nullnode();
    } else {
        newFunc = rt_som_new;
    }

    expr = funccallexpr(
        newFunc,
        create_objectrefnode(tclass->sominfo->classdataobject),
        intconstnode(TYPE(&stunsignedlong), tclass->sominfo->majorversion),
        intconstnode(TYPE(&stunsignedlong), tclass->sominfo->minorversion),
        NULL
        );
    expr->rtype = CDecl_NewPointerType(TYPE(tclass));

    if (copts.som_env_check && !copts.som_call_optimize) {
        ENode *tempExpr;
        ENode *checkExpr;
        ENode *notExpr;
        tempExpr = CExpr_GetETEMPCopy(expr);
        checkExpr = funccallexpr(rt_som_newcheck, nullnode(), NULL, NULL, NULL);
        notExpr = makemonadicnode(tempExpr, ELOGNOT);
        notExpr->rtype = CParser_GetBoolType();
        expr = CSOM_MakeTempCondition(NULL, notExpr, checkExpr, tempExpr);
    }

    return expr;
}

ENode *CSOM_Delete(TypeClass *tclass, ENode *objExpr) {
    Object *func;

    if ((func = CSOM_FindRTFunc("somReleaseObjectReference", "pp")))
        return funccallexpr(func, objExpr, NULL, NULL, NULL);

    return nullnode();
}

void CSOM_InitAutoClass(Object *object) {
    Type *type;
    Statement *stmt;
    Object *func;

    if ((func = CSOM_FindRTFunc("somReleaseObjectReference", "pp"))) {
        type = object->type;
        object->type = CDecl_NewPointerType(type);
        TPTR_QUAL(object->type) = Q_REFERENCE;

        stmt = CFunc_AppendStatement(ST_EXPRESSION);
        stmt->expr = makediadicnode(create_objectnode2(object), CSOM_New(TYPE_CLASS(type)), EASS);
        CExcept_RegisterDeleteObject(stmt, object, func);
    }
}

static void CSOM_FindIntroClassOffset(TypeClass *tclass, Object *func, TypeClass **resultClass, SInt32 *resultOffset) {
    Object *scan;
    VClassList *vbase;
    CScopeObjectIterator iter;

    if (!(TYPE_FUNC(func->type)->flags & FUNC_FLAGS_20)) {
        CScope_InitObjectIterator(&iter, tclass->nspace);
        while (1) {
            if (!(scan = OBJECT(CScope_NextObjectIteratorObject(&iter))))
                break;

            if (scan == func) {
                *resultClass = tclass;
                *resultOffset = CSOM_GetTokenOffset(scan);
                return;
            }
        }

        for (vbase = tclass->vbases; vbase; vbase = vbase->next) {
            CScope_InitObjectIterator(&iter, vbase->base->nspace);
            while (1) {
                if (!(scan = OBJECT(CScope_NextObjectIteratorObject(&iter))))
                    break;

                if (scan == func) {
                    *resultClass = vbase->base;
                    *resultOffset = CSOM_GetTokenOffset(scan);
                    return;
                }
            }
        }
    } else {
        for (vbase = tclass->vbases; vbase; vbase = vbase->next) {
            CScope_InitObjectIterator(&iter, vbase->base->nspace);
            while (1) {
                if (!(scan = OBJECT(CScope_NextObjectIteratorObject(&iter))))
                    break;

                if (scan->name == func->name) {
                    if (
                        IS_TYPE_FUNC(scan->type) &&
                        scan->datatype == DVFUNC &&
                        !(TYPE_FUNC(scan->type)->flags & FUNC_FLAGS_20) &&
                        CClass_GetOverrideKind(TYPE_FUNC(func->type), TYPE_FUNC(scan->type), 0)
                        )
                    {
                        *resultClass = vbase->base;
                        *resultOffset = CSOM_GetTokenOffset(scan);
                        return;
                    }
                    break;
                }
            }
        }
    }

    CError_FATAL(1731);
}

static ENode *CSOM_ComputeSOMSelf(TypeClass *tclass, ENode *selfExpr) {
    ENode *expr;
    Object obj;

    expr = create_objectrefnode(tclass->sominfo->classdataobject);
    expr = makediadicnode(expr, intconstnode(TYPE(&stsignedlong), 8), EADD);
    expr->rtype = CDecl_NewPointerType(TYPE(&SOMIDT_type));
    expr = makemonadicnode(expr, EINDIRECT);

    memclrw(&obj, sizeof(Object));
    obj.otype = OT_OBJECT;
    obj.type = TYPE(&SOMIDT_type);
    obj.name = no_name_node;
    obj.datatype = DFUNC;
    selfExpr = funccallexpr(&obj, selfExpr, NULL, NULL, NULL);

    CError_ASSERT(1761, ENODE_IS(selfExpr, EFUNCCALL));

    selfExpr->data.funccall.funcref = expr;

    return selfExpr;
}

ENode *CSOM_SOMSelfObjectExpr(TypeClass *tclass) {
    ObjectList *list;
    Object *obj;

    for (list = locals; list; list = list->next) {
        if (list->object->name == csom_selfname)
            return create_objectnode(list->object);
    }

    obj = CParser_NewLocalDataObject(NULL, 1);
    obj->name = csom_selfname;
    obj->type = CDecl_NewPointerType(TYPE(tclass));
    CFunc_SetupLocalVarInfo(obj);
    return create_objectnode(obj);
}

void CSOM_InitSOMSelf(TypeClass *tclass, Statement *stmt) {
    ObjectList *list;
    HashNameNode *name;
    ENode *selfExpr;

    name = GetHashNameNodeExport("__somself");
    for (list = locals; list; list = list->next) {
        if (list->object->name == name) {
            selfExpr = CClass_CreateThisSelfExpr();
            CError_ASSERT(1811, selfExpr);

            selfExpr = CSOM_ComputeSOMSelf(tclass, selfExpr);

            stmt = CFunc_InsertStatement(ST_EXPRESSION, stmt);
            stmt->expr = makediadicnode(create_objectnode(list->object), selfExpr, EASS);
            break;
        }
    }
}

ENode *CSOM_EnvCheck(ENode *funccall, ENodeList *checkArg) {
    ENodeList *arg; // r26
    ENodeList *arg2; // r28
    ENode *expr26; // r26
    ENode *expr27; // r27
    ENode *expr28; // r28
    Type *returnType; // r31

    returnType = funccall->rtype;
    CError_ASSERT(1842, arg = funccall->data.funccall.args);

    if (arg == checkArg)
        CError_ASSERT(1845, arg = arg->next);

    CError_ASSERT(1847, arg2 = arg->next);

    if (arg2 == checkArg)
        CError_ASSERT(1850, arg2 = arg2->next);

    CError_ASSERT(1852, IS_TYPE_POINTER_ONLY(arg2->node->rtype));

    if (!IS_TYPE_VOID(funccall->data.funccall.functype->functype)) {
        if (checkArg) {
            if (ENODE_IS(checkArg->node, ETEMP)) {
                if (checkArg->node->data.temp.uniqueid == 0)
                    checkArg->node->data.temp.uniqueid = CParser_GetUniqueID();

                expr26 = lalloc(sizeof(ENode));
                *expr26 = *checkArg->node;
                expr26->data.temp.needs_dtor = 0;
            } else {
                expr26 = CExpr_GetETEMPCopy(checkArg->node);
            }
        } else {
            expr26 = CExpr_GetETEMPCopy(funccall);
        }
    } else {
        expr26 = NULL;
    }

    if (!ENODE_IS(arg2->node, EOBJREF)) {
        if (ENODE_IS_INDIRECT_TO(arg2->node, EOBJREF) && arg2->node->data.monadic->data.objref->datatype == DLOCAL) {
            expr27 = lalloc(sizeof(ENode));
            *expr27 = *arg2->node;
        } else {
            expr27 = CExpr_GetETEMPCopy(arg2->node);
        }
    } else {
        expr27 = lalloc(sizeof(ENode));
        *expr27 = *arg2->node;
    }

    if (copts.som_call_optimize) {
        funccall = makediadicnode(funccall, funccallexpr(rt_som_check, expr27, NULL, NULL, NULL), ECOMMA);
        if (expr26)
            funccall = makediadicnode(funccall, expr26, ECOMMA);
    } else {
        expr28 = lalloc(sizeof(ENode));
        *expr28 = *expr27;
        expr28 = makemonadicnode(expr28, EINDIRECT);
        expr28->rtype = TYPE(&stsignedlong);

        funccall = CSOM_MakeTempCondition(
            funccall,
            expr28,
            funccallexpr(rt_som_check, expr27, NULL, NULL, NULL),
            expr26);
    }

    funccall->rtype = returnType;
    return funccall;
}

static Boolean CSOM_CanUseGlueCall(TypeFunc *tfunc) {
    int gprCounter;
    int fprCounter;
    FuncArg *arg;

    gprCounter = 8;
    fprCounter = 13;
    if (CMach_GetFunctionResultClass(tfunc) != 0)
        gprCounter = 7;

    for (arg = tfunc->args; arg; arg = arg->next) {
        if (arg == &elipsis || arg == &oldstyle)
            return 0;

        switch (arg->type->type) {
            case TYPEINT:
            case TYPEENUM:
            case TYPEPOINTER:
                if (--gprCounter < 0)
                    return 0;
                break;
            case TYPEFLOAT:
                if (--fprCounter < 0)
                    return 0;
                break;
            default:
                return 0;
        }
    }

    return 1;
}

static char *CSOM_AppendString(char *dst, char *src) {
    int ch;
    while ((ch = *(src++)))
        *(dst++) = ch;
    return dst;
}

static ENode *CSOM_SOMGlueCall(TypeClass *tclass, SInt32 offset, Object *object) {
    UInt8 funcResultClass;
    UInt32 bufsize;
    char *buf;
    char *ptr;
    Object *stubObj;
    CSOMStub *stub;
    ENode *expr;
    char mybuf[256];
    char numberbuf[16];

    for (stub = csom_stubs; stub; stub = stub->next) {
        if (stub->tclass == tclass && stub->offset == offset)
            break;
    }

    if (!stub) {
        funcResultClass = CMach_GetFunctionResultClass(TYPE_FUNC(object->type));

        bufsize = strlen(tclass->sominfo->classdataobject->name->name) + 32;
        buf = (bufsize > sizeof(mybuf)) ? lalloc(bufsize) : mybuf;

        ptr = CSOM_AppendString(buf, "___glue_");
        if (tclass->sominfo->oidl_callstyle == 0) {
            if (funcResultClass == 0) {
                *(ptr++) = '4';
            } else {
                *(ptr++) = '5';
            }
        } else {
            *(ptr++) = '_';
        }
        *(ptr++) = '_';

        sprintf(numberbuf, "%ld", strlen(tclass->sominfo->classdataobject->name->name));
        ptr = CSOM_AppendString(ptr, numberbuf);
        ptr = CSOM_AppendString(ptr, tclass->sominfo->classdataobject->name->name);
        *(ptr++) = '_';
        sprintf(numberbuf, "%" PRId32, offset);
        ptr = CSOM_AppendString(ptr, numberbuf);
        *ptr = 0;

        stubObj = CParser_NewCompilerDefFunctionObject();
        stubObj->nspace = cscope_root;
        stubObj->name = GetHashNameNodeExport(buf);
        stubObj->u.func.linkname = stubObj->name;
        stubObj->type = object->type;
        stubObj->qual = object->qual | Q_20000;
        stubObj->flags = OBJECT_FLAGS_10;
        CScope_AddObject(stubObj->nspace, stubObj->name, OBJ_BASE(stubObj));

        stub = galloc(sizeof(CSOMStub));
        stub->next = csom_stubs;
        stub->object = stubObj;
        stub->tclass = tclass;
        stub->offset = offset;
        csom_stubs = stub;

        if (tclass->sominfo->oidl_callstyle == 0) {
            if (funcResultClass == 0)
                stub->x10 = 0;
            else
                stub->x10 = 1;
        } else {
            stub->x10 = 2;
        }
    }

    expr = create_objectrefnode(stub->object);
    expr->rtype = CDecl_NewPointerType(object->type);
    return expr;
}

ENode *CSOM_MemberVarAccess(BClassList *path, ObjMemberVar *ivar, ENode *thisExpr) {
    if (!thisExpr) {
        if (
            !cscope_currentfunc ||
            !cscope_currentclass ||
            !cscope_is_member_func ||
            !(thisExpr = CClass_CreateThisSelfExpr())
            )
        {
            CError_Error(CErrorStr221);
            return NULL;
        }
    }

    CError_ASSERT(2069, ENODE_IS(thisExpr, EINDIRECT));

    thisExpr = thisExpr->data.monadic;

    if (
        path->next == NULL &&
        cscope_currentclass == TYPE_CLASS(path->type) &&
        ENODE_IS(thisExpr, EOBJREF) &&
        thisExpr->data.objref->name == this_name_node
        )
    {
        thisExpr = CSOM_SOMSelfObjectExpr(cscope_currentclass);
    }
    else
    {
        CClass_CheckPathAccess(path, NULL, ivar->access);
        if (ivar->has_path)
            path = OBJ_MEMBER_VAR_PATH(ivar)->path;
        while (path->next)
            path = path->next;
        thisExpr = CSOM_ComputeSOMSelf(TYPE_CLASS(path->type), thisExpr);
    }

    thisExpr = makemonadicnode(thisExpr, EINDIRECT);
    thisExpr->rtype = path->type;
    return CClass_AccessMember(thisExpr, ivar->type, ivar->qual, ivar->offset);
}

ENode *CSOM_MethodAccess(BClassList *path, Object *func, Boolean flag) {
    TypeClass *tclass;
    TypeClass *tclass2;
    TypeClass *tclass3;
    ENode *expr;
    SInt32 offset;
    ClassList *base;

    CError_ASSERT(2107, path != NULL);

    tclass = TYPE_CLASS(path->type);
    if (path->next)
        path = path->next;
    tclass2 = TYPE_CLASS(path->type);

    if (flag) {
        SInt32 counter;
        ENode *indirectExpr;
        Object *resolveFunc;

        counter = 0;
        if (tclass != tclass2) {
            for (base = tclass->bases; base; base = base->next) {
                counter++;
                if (base->base == tclass2)
                    break;
            }

            if (!base)
                CError_Error(CErrorStr279);
        }

        CSOM_FindIntroClassOffset(tclass2, func, &tclass3, &offset);
        expr = create_objectrefnode(tclass3->sominfo->classdataobject);
        expr = makediadicnode(expr, intconstnode(TYPE(&stsignedlong), offset), EADD);
        indirectExpr = makemonadicnode(expr, EINDIRECT);
        indirectExpr->rtype = CDecl_NewPointerType(func->type);

        resolveFunc = CSOM_FindRTFunc("somParentNumResolve", "ppip");
        if (!resolveFunc)
            return nullnode();

        expr = funccallexpr(
            resolveFunc,
            create_objectrefnode(tclass->sominfo->classdataobject),
            intconstnode(TYPE(&stsignedint), counter),
            indirectExpr,
            NULL);
        expr->rtype = indirectExpr->rtype;
        if (copts.som_env_check && tclass3->sominfo->oidl_callstyle == 0)
            expr->flags = expr->flags | ENODE_FLAG_10;
    } else {
        CSOM_FindIntroClassOffset(tclass2, func, &tclass3, &offset);
        if (copts.som_call_optimize && CSOM_CanUseGlueCall(TYPE_FUNC(func->type)))
            return CSOM_SOMGlueCall(tclass3, offset, func);

        expr = create_objectrefnode(tclass3->sominfo->classdataobject);
        expr = makediadicnode(expr, intconstnode(TYPE(&stsignedlong), offset), EADD);
        expr = makemonadicnode(expr, EINDIRECT);
        expr->rtype = CDecl_NewPointerType(func->type);
        if (copts.som_env_check && tclass3->sominfo->oidl_callstyle == 0)
            expr->flags = expr->flags | ENODE_FLAG_10;
    }

    return expr;
}