MWCC/compiler_and_linker/unsorted/CExpr2.c

#include "compiler/CExpr.h"
#include "compiler/CABI.h"
#include "compiler/CClass.h"
#include "compiler/CDecl.h"
#include "compiler/CInt64.h"
#include "compiler/CError.h"
#include "compiler/CFunc.h"
#include "compiler/CInline.h"
#include "compiler/CMachine.h"
#include "compiler/CParser.h"
#include "compiler/CScope.h"
#include "compiler/CodeGen.h"
#include "compiler/CompilerTools.h"
#include "compiler/enode.h"
#include "compiler/objects.h"
#include "compiler/scopes.h"

#ifdef __MWERKS__
#undef va_start
#undef va_arg
#define va_start(ap, parm) ap = __va_start(parm)
#define __va_start(parm) (va_list) (&parm + 1)
//#define va_arg(ap, type) ((((type *) (ap = (va_list) (( ((long) ap + sizeof(type) - 1) & ~(sizeof(type)) ) + sizeof(type) ) ))[-1]))
#define va_arg(ap, type) (*(((type *) (ap = (char *)((((unsigned long)ap + __builtin_align(type) - 1) & ~(__builtin_align(type) - 1) ) + sizeof(type)))) - 1))
#endif

// TODO MOVE ME
extern ENode *CSOM_EnvCheck(ENode *, ENodeList *);
extern Boolean CTemplTool_IsTemplateArgumentDependentExpression(ENode *expr);
extern ENode *CTemplTool_DeduceDefaultArg(Object *func, ENode *expr);
extern Boolean CObjC_IsCompatibleType(Type *a, Type *b);

ENode *assign_node;
Boolean temp_reference_init;
static SInt32 assign_value; // type?
static ENode *firstarrayexpr;
static Match5 user_std_match;
static Boolean cexpr_hascall;
static Boolean cexpr_esearch_bool[MAXEXPR];
static Boolean cexpr_rsearch_bool[MAXEXPR];
static CExprSearchCB cexpr_esearch_callback;
static CExprReplaceCB cexpr_rsearch_callback;
static Type *cexpr_left_conversion_type;
static Type *cexpr_right_conversion_type;

// data objects, need to figure out the types
static void *diadic_arg1;
static void *diadic_arg2;
static void *mon_arg;

static void CExpr_RecSearchExprTree(ENode *expr) {
    ENodeList *list;

restart:
    if (cexpr_esearch_bool[expr->type])
        cexpr_esearch_callback(expr);

    switch (expr->type) {
        case EPOSTINC:
        case EPOSTDEC:
        case EPREINC:
        case EPREDEC:
        case EINDIRECT:
        case EMONMIN:
        case EBINNOT:
        case ELOGNOT:
        case EFORCELOAD:
        case ETYPCON:
        case EBITFIELD:
            expr = expr->data.monadic;
            goto restart;
        case EMUL:
        case EMULV:
        case EDIV:
        case EMODULO:
        case EADDV:
        case ESUBV:
        case EADD:
        case ESUB:
        case ESHL:
        case ESHR:
        case ELESS:
        case EGREATER:
        case ELESSEQU:
        case EGREATEREQU:
        case EEQU:
        case ENOTEQU:
        case EAND:
        case EXOR:
        case EOR:
        case ELAND:
        case ELOR:
        case EASS:
        case EMULASS:
        case EDIVASS:
        case EMODASS:
        case EADDASS:
        case ESUBASS:
        case ESHLASS:
        case ESHRASS:
        case EANDASS:
        case EXORASS:
        case EORASS:
        case ECOMMA:
        case EPMODULO:
        case EROTL:
        case EROTR:
        case EBCLR:
        case EBTST:
        case EBSET:
            CExpr_RecSearchExprTree(expr->data.diadic.left);
            expr = expr->data.diadic.right;
            goto restart;
        case EINTCONST:
        case EFLOATCONST:
        case ESTRINGCONST:
        case EOBJREF:
        case EPRECOMP:
        case ETEMP:
        case EARGOBJ:
        case ELOCOBJ:
        case ELABEL:
        case EOBJLIST:
        case EMEMBER:
        case EINSTRUCTION:
        case EVECTOR128CONST:
            return;
        case EFUNCCALL:
        case EFUNCCALLP:
            for (list = expr->data.funccall.args; list; list = list->next)
                CExpr_RecSearchExprTree(list->node);
            expr = expr->data.funccall.funcref;
            goto restart;
        case ENULLCHECK:
            CExpr_RecSearchExprTree(expr->data.nullcheck.nullcheckexpr);
            expr = expr->data.nullcheck.condexpr;
            goto restart;
        case EMFPOINTER:
            CExpr_RecSearchExprTree(expr->data.mfpointer.accessnode);
            expr = expr->data.mfpointer.mfpointer;
            goto restart;
        case ECOND:
            CExpr_RecSearchExprTree(expr->data.cond.cond);
            CExpr_RecSearchExprTree(expr->data.cond.expr1);
            expr = expr->data.cond.expr2;
            goto restart;
        case ENEWEXCEPTION:
        case ENEWEXCEPTIONARRAY:
            CExpr_RecSearchExprTree(expr->data.newexception.initexpr);
            expr = expr->data.newexception.tryexpr;
            goto restart;
        case EMYSTERY67:
            if (expr->data.itc.initexpr)
                CExpr_RecSearchExprTree(expr->data.itc.initexpr);
            if (expr->data.itc.tryexpr)
                CExpr_RecSearchExprTree(expr->data.itc.tryexpr);
            if (expr->data.itc.catchexpr)
                CExpr_RecSearchExprTree(expr->data.itc.catchexpr);
            if (expr->data.itc.result)
                CExpr_RecSearchExprTree(expr->data.itc.result);
            return;
        default:
#line 128
            CError_FATAL();
    }
}

void CExpr_SearchExprTree(ENode *expr, CExprSearchCB callback, int count, ...) {
    va_list ap;
    short i;

    cexpr_esearch_callback = callback;

    va_start(ap, count);
    for (i = 0; i < MAXEXPR; i++)
        cexpr_esearch_bool[i] = 0;
    i = 0;
    while ((short) i < count) {
        cexpr_esearch_bool[va_arg(ap, int)] = 1;
        ++i;
    }
    va_end(ap);

    CExpr_RecSearchExprTree(expr);
}

static ENode *CExpr_RecSearchExprTreeReplace(ENode *expr) {
    ENodeList *list;
    ENode *replaced;

    if (cexpr_rsearch_bool[expr->type]) {
        replaced = cexpr_rsearch_callback(expr);
        if (!replaced)
            return expr;
        expr = replaced;
    }

    switch (expr->type) {
        case EPOSTINC:
        case EPOSTDEC:
        case EPREINC:
        case EPREDEC:
        case EINDIRECT:
        case EMONMIN:
        case EBINNOT:
        case ELOGNOT:
        case EFORCELOAD:
        case ETYPCON:
        case EBITFIELD:
            expr->data.monadic = CExpr_RecSearchExprTreeReplace(expr->data.monadic);
            return expr;
        case EMUL:
        case EMULV:
        case EDIV:
        case EMODULO:
        case EADDV:
        case ESUBV:
        case EADD:
        case ESUB:
        case ESHL:
        case ESHR:
        case ELESS:
        case EGREATER:
        case ELESSEQU:
        case EGREATEREQU:
        case EEQU:
        case ENOTEQU:
        case EAND:
        case EXOR:
        case EOR:
        case ELAND:
        case ELOR:
        case EASS:
        case EMULASS:
        case EDIVASS:
        case EMODASS:
        case EADDASS:
        case ESUBASS:
        case ESHLASS:
        case ESHRASS:
        case EANDASS:
        case EXORASS:
        case EORASS:
        case ECOMMA:
        case EPMODULO:
        case EROTL:
        case EROTR:
        case EBCLR:
        case EBTST:
        case EBSET:
            expr->data.diadic.left = CExpr_RecSearchExprTreeReplace(expr->data.diadic.left);
            expr->data.diadic.right = CExpr_RecSearchExprTreeReplace(expr->data.diadic.right);
            return expr;
        case EINTCONST:
        case EFLOATCONST:
        case ESTRINGCONST:
        case EOBJREF:
        case EPRECOMP:
        case ETEMP:
        case EARGOBJ:
        case ELOCOBJ:
        case ELABEL:
        case EMEMBER:
        case EINSTRUCTION:
        case EVECTOR128CONST:
            return expr;
        case EFUNCCALL:
        case EFUNCCALLP:
            for (list = expr->data.funccall.args; list; list = list->next)
                list->node = CExpr_RecSearchExprTreeReplace(list->node);
            expr->data.funccall.funcref = CExpr_RecSearchExprTreeReplace(expr->data.funccall.funcref);
            return expr;
        case ENULLCHECK:
            expr->data.nullcheck.nullcheckexpr = CExpr_RecSearchExprTreeReplace(expr->data.nullcheck.nullcheckexpr);
            expr->data.nullcheck.condexpr = CExpr_RecSearchExprTreeReplace(expr->data.nullcheck.condexpr);
            return expr;
        case EMFPOINTER:
            expr->data.mfpointer.accessnode = CExpr_RecSearchExprTreeReplace(expr->data.mfpointer.accessnode);
            expr->data.mfpointer.mfpointer = CExpr_RecSearchExprTreeReplace(expr->data.mfpointer.mfpointer);
            return expr;
        case ECOND:
            expr->data.cond.cond = CExpr_RecSearchExprTreeReplace(expr->data.cond.cond);
            expr->data.cond.expr1 = CExpr_RecSearchExprTreeReplace(expr->data.cond.expr1);
            expr->data.cond.expr2 = CExpr_RecSearchExprTreeReplace(expr->data.cond.expr2);
            return expr;
        default:
#line 220
            CError_FATAL();
            return NULL;
    }
}

ENode *CExpr_SearchExprTreeReplace(ENode *expr, CExprReplaceCB callback, int count, ...) {
    va_list ap;
    short i;

    cexpr_rsearch_callback = callback;

    va_start(ap, count);
    for (i = 0; i < MAXEXPR; i++)
        cexpr_rsearch_bool[i] = 0;
    i = 0;
    while ((short) i < count) {
        cexpr_rsearch_bool[va_arg(ap, int)] = 1;
        ++i;
    }
    va_end(ap);

    return CExpr_RecSearchExprTreeReplace(expr);
}

static void CExpr_HasFuncCallCallBack(ENode *expr) {
    cexpr_hascall = 1;
}

Boolean CExpr_HasFuncCall(ENode *expr) {
    cexpr_hascall = 0;
    CExpr_SearchExprTree(expr, CExpr_HasFuncCallCallBack, 2, EFUNCCALL, EFUNCCALLP);
    return cexpr_hascall;
}

void CExpr_AliasTransform(ENode *expr) {
    ENode *n;

    Object *obj = expr->data.objref;
    if (obj->u.alias.offset) {
        n = makediadicnode(
                create_objectrefnode(obj->u.alias.object),
                intconstnode(TYPE(&stunsignedlong), obj->u.alias.offset),
                EADD);
        *expr = *n;
    } else {
        expr->data.objref = obj->u.alias.object;
    }
}

ENode *CExpr_UnaryFloatExpression(ENode *expr) {
    return expr;
}

ENode *CExpr_BinaryFloatExpression(ENode *expr) {
    return expr;
}

ENode *CExpr_NewENode(ENodeType ty) {
    ENode *expr = lalloc(sizeof(ENode));
    memclrw(expr, sizeof(ENode));
    expr->type = ty;
    return expr;
}

ENode *CExpr_NewTemplDepENode(TemplDepSubType t) {
    ENode *expr = CExpr_NewENode(ETEMPLDEP);
    expr->rtype = &sttemplexpr;
    expr->data.templdep.subtype = t;
    return expr;
}

ENode *nullnode(void) {
    ENode *expr = CExpr_NewENode(EINTCONST);
    expr->rtype = (Type *) &stsignedlong;
    return expr;
}

ENode *intconstnode(Type *type, SInt32 value) {
    ENode *expr = CExpr_NewENode(EINTCONST);
    expr->rtype = type;
    CInt64_SetLong(&expr->data.intval, value);
    return expr;
}

ENode *stringconstnode(char *str) {
    ENode *expr;
    SInt32 size;

    size = strlen(str) + 1;
    expr = CExpr_NewENode(ESTRINGCONST);
    expr->rtype = CDecl_NewArrayType((Type *) &stchar, size);
    expr->data.string.size = size;
    expr->data.string.data = str;
    expr->data.string.ispascal = 0;
    if (copts.const_strings)
        expr->flags = Q_CONST;

    expr = makemonadicnode(expr, EINDIRECT);
    expr->data.monadic->rtype = CDecl_NewPointerType(expr->rtype);
    return expr;
}

ENode *forceintegral(ENode *expr) {
    if (!IS_TYPE_ENUM(expr->rtype)) {
        CError_Error(144);
        return nullnode();
    } else {
        expr->rtype = TYPE_ENUM(expr->rtype)->enumtype;
        return expr;
    }
}

ENode *makemonadicnode(ENode *inner, ENodeType ty) {
    ENode *expr = lalloc(sizeof(ENode));
    expr->type = ty;
    if ((expr->cost = inner->cost) == 0)
        expr->cost = 1;
    expr->flags = inner->flags & ENODE_FLAG_QUALS;
    expr->rtype = inner->rtype;
    expr->data.monadic = inner;
    return expr;
}

ENode *makediadicnode(ENode *left, ENode *right, ENodeType ty) {
    ENode *expr = lalloc(sizeof(ENode));
    expr->type = ty;
    expr->rtype = left->rtype;
    expr->data.diadic.left = left;
    expr->data.diadic.right = right;

    if (left->cost != right->cost) {
        expr->cost = right->cost;
        if (left->cost > expr->cost)
            expr->cost = left->cost;
    } else {
        expr->cost = right->cost + 1;
        if (expr->cost > 200)
            expr->cost = 200;
    }

    expr->flags = (left->flags | right->flags) & ENODE_FLAG_QUALS;
    return expr;
}

ENode *makecommaexpression(ENode *left, ENode *right) {
    ENode *expr;

    if (ENODE_IS(right, EINDIRECT) && !ENODE_IS(right->data.monadic, EBITFIELD)) {
        Boolean savecpp = copts.cplusplus;
        copts.cplusplus = 1;
        expr = makediadicnode(left, getnodeaddress(right, 0), ECOMMA);
        copts.cplusplus = savecpp;
        expr->rtype = expr->data.diadic.right->rtype;
        expr = makemonadicnode(expr, EINDIRECT);
    } else {
        expr = makediadicnode(left, right, ECOMMA);
    }

    expr->rtype = right->rtype;
    expr->flags = right->flags;
    return expr;
}

short iszero(ENode *expr) {
    switch (expr->type) {
        case EINTCONST:
            return CInt64_IsZero(&expr->data.intval);
        case EFLOATCONST:
            return CMach_FloatIsZero(expr->data.floatval);
        default:
            return 0;
    }
}

short isnotzero(ENode *expr) {
    Object *obj;

    switch (expr->type) {
        case EINTCONST:
            return !CInt64_IsZero(&expr->data.intval);
        case EFLOATCONST:
            return !CMach_FloatIsZero(expr->data.floatval);
        case ESTRINGCONST:
        case ETEMP:
            return 1;
        case EOBJREF:
            obj = expr->data.objref;
            break;
        case EADD:
        case ESUB:
            if (ENODE_IS(expr->data.diadic.left, EOBJREF) && ENODE_IS(expr->data.diadic.right, EINTCONST)) {
                obj = expr->data.diadic.left->data.objref;
                break;
            }
            if (ENODE_IS(expr->data.diadic.left, EINTCONST) && ENODE_IS(expr->data.diadic.right, EOBJREF)) {
                obj = expr->data.diadic.right->data.objref;
                break;
            }
            return 0;
        default:
            return 0;
    }

    switch (obj->datatype) {
        case DLOCAL:
            return 1;
        default:
            return 0;
    }
}

Boolean CExpr_IsOne(ENode *expr) {
    if (ENODE_IS(expr, EINTCONST))
        return CInt64_Equal(expr->data.intval, cint64_one);
    else if (ENODE_IS(expr, EFLOATCONST))
        return CMach_FloatIsOne(expr->data.floatval);
    else
        return 0;
}

Boolean CExpr_AllBitsSet(ENode *expr) {
    SInt32 v;

    if (ENODE_IS(expr, EINTCONST)) {
        switch (expr->rtype->size) {
            case 1:
                v = CInt64_GetULong(&expr->data.intval) & 0xFF;
                return v == 0xFF;
            case 2:
                v = CInt64_GetULong(&expr->data.intval) & 0xFFFF;
                return v == 0xFFFF;
            case 3:
                v = CInt64_GetULong(&expr->data.intval) & 0xFFFFFF;
                return v == 0xFFFFFF;
            case 4:
                v = CInt64_GetULong(&expr->data.intval) & 0xFFFFFFFF;
                return v == 0xFFFFFFFF;
            default:
                return CInt64_Equal(expr->data.intval, cint64_negone);
        }
    }

    return 0;
}

ENode *CExpr_NewETEMPNode(Type *type, Boolean assign_id) {
    ENode *expr = lalloc(sizeof(ENode));
    expr->type = ETEMP;
    expr->cost = 0;
    expr->flags = 0;
    expr->rtype = CDecl_NewPointerType(type);
    expr->data.temp.type = type;
    expr->data.temp.uniqueid = assign_id ? CParser_GetUniqueID() : 0;
    expr->data.temp.needs_dtor = 0;
    return expr;
}

static ENode *CExpr_DerefETEMPCopy(ENode *expr) {
    ENode *copy;

#line 636
    CError_ASSERT(expr->rtype->type == TYPEPOINTER);

    copy = lalloc(sizeof(ENode));
    *copy = *expr;
    copy = makemonadicnode(copy, EINDIRECT);
    copy->rtype = TYPE_POINTER(copy->rtype)->target;
}

ENode *CExpr_GetETEMPCopy(ENode *expr) {
    ENode *newnode;
    ENode *assnode;
    ENode *finalnode;

    newnode = CExpr_NewETEMPNode(expr->rtype, 1);
    newnode->flags = expr->flags;

    assnode = makediadicnode(CExpr_DerefETEMPCopy(newnode), expr, EASS);
    assnode->data.diadic.right = lalloc(sizeof(ENode));
    *assnode->data.diadic.right = *expr;
    *expr = *assnode;

    finalnode = makemonadicnode(newnode, EINDIRECT);
    finalnode->rtype = expr->rtype;
    return finalnode;
}

ENode *integralpromote(ENode *expr) {
    if (!IS_TYPE_INT(expr->rtype))
        expr = forceintegral(expr);

    if (TYPE_INTEGRAL(expr->rtype)->integral >= IT_INT)
        return expr;

    if (!ENODE_IS(expr, EINTCONST))
        expr = makemonadicnode(expr, ETYPCON);
    expr->rtype = (Type *) &stsignedint;

    return expr;
}

CInt64 CExpr_IntConstConvert(Type *a, Type *b, CInt64 val) {
    if (a == (Type *) &stbool)
        return CMach_CalcIntDiadic(b, val, TK_LOGICAL_NE, cint64_zero);
    else
        return CMach_CalcIntDiadic(a, val, '+', cint64_zero);
}

ENode *promote(ENode *expr, Type *type) {
    if (ENODE_IS(expr, EINTCONST)) {
        if (IS_TYPE_FLOAT(type)) {
            expr->type = EFLOATCONST;
            expr->data.floatval = CMach_CalcFloatConvertFromInt(expr->rtype, expr->data.intval);
        } else {
            expr->data.intval = CExpr_IntConstConvert(type, expr->rtype, expr->data.intval);
        }
        expr->rtype = type;
        return expr;
    }
    if (ENODE_IS(expr, EFLOATCONST)) {
        if (IS_TYPE_FLOAT(type)) {
            expr->data.floatval = CMach_CalcFloatConvert(type, expr->data.floatval);
            expr->rtype = type;
            return expr;
        } else if (IS_TYPE_INT(type)) {
            expr->data.intval = CMach_CalcIntConvertFromFloat(type, expr->data.floatval);
            expr->type = EINTCONST;
            expr->rtype = type;
            return expr;
        }
    }

    expr = makemonadicnode(expr, ETYPCON);
    expr->rtype = type;
    return expr;
}

void CExpr_ArithmeticConversion(ENode **left, ENode **right) {
    switch ((*left)->rtype->type) {
        case TYPEINT:
        case TYPEFLOAT:
            break;
        case TYPEENUM:
            (*left)->rtype = TYPE_ENUM((*left)->rtype)->enumtype;
            break;
        default:
            CError_Error(144);
            (*left) = nullnode();
    }

    switch ((*right)->rtype->type) {
        case TYPEINT:
        case TYPEFLOAT:
            break;
        case TYPEENUM:
            (*right)->rtype = TYPE_ENUM((*right)->rtype)->enumtype;
            break;
        default:
            CError_Error(144);
            (*right) = nullnode();
    }

    if (IS_TYPE_FLOAT((*left)->rtype) || IS_TYPE_FLOAT((*right)->rtype)) {
        if ((*left)->rtype != (*right)->rtype) {
            if (TYPE_INTEGRAL((*left)->rtype)->integral > TYPE_INTEGRAL((*right)->rtype)->integral)
                *right = promote(*right, (*left)->rtype);
            else
                *left = promote(*left, (*right)->rtype);
        }
        return;
    }

    *left = integralpromote(*left);
    *right = integralpromote(*right);
    if ((*left)->rtype != (*right)->rtype) {
        if (TYPE_INTEGRAL((*left)->rtype)->integral < TYPE_INTEGRAL((*right)->rtype)->integral) {
            ENode **tmp = left;
            left = right;
            right = tmp;
        }

        if ((*left)->rtype->size == (*right)->rtype->size && !is_unsigned((*left)->rtype) && is_unsigned((*right)->rtype)) {
            if ((*left)->rtype == (Type *) &stsignedlong) {
                *left = promote(*left, (Type *) &stunsignedlong);
            } else {
#line 838
                CError_ASSERT((*left)->rtype == (Type *) &stsignedlonglong);
                *left = promote(*left, (Type *) &stunsignedlonglong);
            }
        }

        *right = promote(*right, (*left)->rtype);
    }
}

static ENode *CExpr_GetEA(ENode *expr) {
    ENode *copy;

    for (;;) {
        switch (expr->type) {
            case EINDIRECT:
                expr = expr->data.monadic;
                for (;;) {
                    switch (expr->type) {
                        case EOBJREF:
                            copy = lalloc(sizeof(ENode));
                            *copy = *expr;
                            return copy;
                        case ECOMMA:
                            expr = expr->data.diadic.right;
                            continue;
                        default:
                            return CExpr_GetETEMPCopy(expr);
                    }
                }
                break;
            case EPOSTINC:
            case EPOSTDEC:
            case EPREINC:
            case EPREDEC:
                expr = expr->data.monadic;
                continue;
            case EASS:
            case EMULASS:
            case EDIVASS:
            case EMODASS:
            case EADDASS:
            case ESUBASS:
            case ESHLASS:
            case ESHRASS:
            case EANDASS:
            case EXORASS:
            case EORASS:
                expr = expr->data.monadic;
                continue;
            case ECOMMA:
                expr = expr->data.diadic.right;
                continue;
            default:
                return NULL;
        }
    }
}

ENode *CExpr_TempModifyExpr(ENode *expr) {
    // register issues
    Type *type;
    ENode *tempnode;
    ENode *eanode;
    ENode *assnode2;
    ENode *left;
    ENode *right;
    ENode *work;

    type = expr->rtype;
    tempnode = CExpr_NewETEMPNode(type, 1);
    eanode = CExpr_GetEA(expr);
    if (!eanode) {
        CError_Error(142);
        return expr;
    }

    left = makemonadicnode(tempnode, EINDIRECT);
    left->rtype = type;
    work = makediadicnode(left, expr, EASS);

    left = makemonadicnode(eanode, EINDIRECT);
    left->rtype = type;
    right = nullnode();
    right->rtype = (Type *) &stbool;
    CInt64_SetLong(&right->data.intval, 1);
    assnode2 = makediadicnode(left, right, EASS);

    work = makediadicnode(work, assnode2, ECOMMA);
    right = makemonadicnode(tempnode, EINDIRECT);
    right->rtype = type;
    work = makediadicnode(work, right, ECOMMA);

    return work;
}

Boolean CExpr_IsLValue(ENode *expr) {
    while (!ENODE_IS(expr, EINDIRECT)) {
        switch (expr->type) {
            case EPREINC:
            case EPREDEC:
                return copts.cplusplus;
            case EASS:
            case EMULASS:
            case EDIVASS:
            case EMODASS:
            case EADDASS:
            case ESUBASS:
            case ESHLASS:
            case ESHRASS:
            case EANDASS:
            case EXORASS:
            case EORASS:
                if (!copts.cplusplus)
                    return 0;
                expr = expr->data.diadic.left;
                continue;
            case ECOMMA:
                if (!copts.cplusplus)
                    return 0;
                expr = expr->data.diadic.right;
                continue;
            case ECOND:
                if (
                        copts.cplusplus &&
                        is_typesame(expr->data.cond.expr1->rtype, expr->data.cond.expr2->rtype) &&
                        (expr->data.cond.expr1->rtype->type != TYPEPOINTER || (UInt32) (expr->data.cond.expr1->flags & ENODE_FLAG_QUALS) == (expr->data.cond.expr2->flags & ENODE_FLAG_QUALS))
                        ) {
                    return CExpr_IsLValue(expr->data.cond.expr1) && CExpr_IsLValue(expr->data.cond.expr2);
                }
                return 0;
            default:
                return 0;
        }
    }

    expr = expr->data.monadic;
    switch (expr->type) {
        case ETEMP:
            return 0;
        case EFUNCCALL:
            if (expr->data.funccall.functype->functype->type != TYPEPOINTER || (expr->data.funccall.functype->flags & FUNC_FLAGS_1000))
                return 0;
        default:
            return 1;
    }
}

ENode *CExpr_LValue(ENode *expr, Boolean flag1, Boolean flag2) {
    ENode *eanode;
    ENode *tmpnode;

loop:
    switch (expr->type) {
        case ETYPCON:
            if (copts.pointercast_lvalue || !copts.ANSI_strict) {
                if (expr->rtype->type == TYPEPOINTER && expr->data.monadic->rtype->type == TYPEPOINTER) {
                    switch (expr->data.monadic->type) {
                        case EINDIRECT:
                        case ETYPCON:
                            expr->data.monadic->rtype = expr->rtype;
                            expr->data.monadic->flags = expr->flags;
                            expr = expr->data.monadic;
                            goto loop;
                    }
                }
            }
            break;
        case EINDIRECT:
            if (flag2) {
                if (!CExpr_IsLValue(expr))
                    CError_Warning(142);

                if (
                        ENODE_IS(expr->data.monadic, EOBJREF) &&
                        expr->data.monadic->data.objref->name == this_name_node &&
                        cscope_currentfunc &&
                        cscope_currentclass &&
                        expr->data.monadic->data.objref == CClass_ThisSelfObject())
                    CError_Error(189);
            }
            if (flag1) {
                if (CParser_IsConst(expr->rtype, expr->flags & ENODE_FLAG_QUALS))
                    CError_Error(179);
            }
            return expr;
        case EPREINC:
        case EPREDEC:
        case EASS:
        case EMULASS:
        case EDIVASS:
        case EMODASS:
        case EADDASS:
        case ESUBASS:
        case ESHLASS:
        case ESHRASS:
        case EANDASS:
        case EXORASS:
        case EORASS:
        case ECOMMA:
            if (copts.cplusplus) {
                if ((eanode = CExpr_GetEA(expr))) {
                    tmpnode = makediadicnode(expr, eanode, ECOMMA);
                    tmpnode->rtype = tmpnode->data.diadic.right->rtype;
                    tmpnode = makemonadicnode(tmpnode, EINDIRECT);
                    tmpnode->rtype = expr->rtype;
                    return tmpnode;
                }
                CError_Error(190);
                return expr;
            }
            break;
        case ECOND:
            if (
                    copts.cplusplus &&
                    is_typesame(expr->data.cond.expr1->rtype, expr->data.cond.expr2->rtype) &&
                    (expr->data.cond.expr1->rtype->type != TYPEPOINTER || (UInt32) (expr->data.cond.expr1->flags & ENODE_FLAG_QUALS) == (expr->data.cond.expr2->flags & ENODE_FLAG_QUALS))
                    ) {
                expr->data.cond.expr1 = CExpr_LValue(expr->data.cond.expr1, flag1, flag2);
                expr->data.cond.expr2 = CExpr_LValue(expr->data.cond.expr2, flag1, flag2);
                if (ENODE_IS(expr->data.cond.expr1, EINDIRECT) && ENODE_IS(expr->data.cond.expr2, EINDIRECT)) {
                    if (!ENODE_IS(expr->data.cond.expr1->data.monadic, EBITFIELD) && !ENODE_IS(expr->data.cond.expr2->data.monadic, EBITFIELD)) {
                        expr->data.cond.expr1 = getnodeaddress(expr->data.cond.expr1, 0);
                        expr->data.cond.expr2 = getnodeaddress(expr->data.cond.expr2, 0);
                        expr->rtype = expr->data.cond.expr1->rtype;
                        tmpnode = makemonadicnode(expr, EINDIRECT);
                        tmpnode->rtype = TYPE_POINTER(tmpnode->rtype)->target;
                        return tmpnode;
                    }
                }
            }
            break;
    }

    if (flag2)
        CError_Error(142);
    return expr;
}

ENode *CExpr_MakeObjRefNode(Object *obj, Boolean flag) {
    ENode *expr;

    if (obj->sclass == OBJECT_SCLASS_104) {
        CError_Error(141);
        return intconstnode((Type *) &void_ptr, 0);
    }

    expr = lalloc(sizeof(ENode));
    memclrw(expr, sizeof(ENode));
    expr->type = EOBJREF;
    expr->data.objref = obj;
    expr->rtype = CDecl_NewPointerType(obj->type);

    if (!IS_TYPE_FUNC(obj->type))
        expr->flags = obj->qual & ENODE_FLAG_QUALS;
    if (flag)
        obj->flags |= OBJECT_FLAGS_UNUSED;

    return expr;
}

ENode *create_objectrefnode(Object *obj) {
    if (name_obj_check && !name_obj_check(NULL, obj))
        return intconstnode((Type *) &void_ptr, 0);
    return CExpr_MakeObjRefNode(obj, 1);
}

ENode *create_objectnode2(Object *obj) {
    ENode *expr;

    if (name_obj_check && !name_obj_check(NULL, obj))
        return nullnode();

    expr = makemonadicnode(CExpr_MakeObjRefNode(obj, 1), EINDIRECT);
    expr->rtype = TYPE_POINTER(expr->rtype)->target;
    return expr;
}

ENode *create_objectnode(Object *obj) {
    return checkreference(create_objectnode2(obj));
}

static ENode *CExpr_ExpandArg(ENode *expr, Type *type) {
    if (ENODE_IS(expr, ETYPCON) && IS_TYPE_FLOAT(type)) {
        expr->rtype = type;
        return expr;
    } else {
        return promote(expr, type);
    }
}

ENode *CExpr_IsTempConstruction(ENode *expr, Type *type, ENode **resultexpr) {
    ENodeList *args;
    ENode *funccall;
    ENode *funcref;

    if (!ENODE_IS(expr, EINDIRECT) || expr->rtype != type || !ENODE_IS((funccall = expr->data.monadic), EFUNCCALL) || !(args = funccall->data.funccall.args))
        return NULL;

    if (!ENODE_IS((funcref = funccall->data.funccall.funcref), EOBJREF) || !CClass_IsConstructor(funcref->data.objref)) {
        if (expr->data.monadic->data.funccall.functype->functype != type)
            return NULL;
        if (CABI_GetStructResultArgumentIndex() == 1) {
            args = args->next;
#line 1277
            CError_ASSERT(args);
        }
    }

    if (resultexpr)
        *resultexpr = args->node;
    return expr->data.monadic;
}

ENode *CExpr_AdjustFunctionCall(ENode *expr) {
    ENodeList *list;

    switch (expr->data.funccall.functype->functype->type) {
        case TYPECLASS:
            CDecl_CompleteType(expr->data.funccall.functype->functype);
        case TYPESTRUCT:
            if (!expr->data.funccall.functype->functype->size)
                CError_Error(136, expr->data.funccall.functype->functype, 0);
    }

    if (CMach_GetFunctionResultClass(expr->data.funccall.functype)) {
        list = lalloc(sizeof(ENodeList));
        if (IS_TYPE_CLASS(expr->data.funccall.functype->functype)) {
            CDecl_CompleteType(expr->data.funccall.functype->functype);
            if (CClass_Destructor(TYPE_CLASS(expr->data.funccall.functype->functype)))
                list->node = create_temp_node2(expr->rtype);
            else
                list->node = create_temp_node(expr->rtype);
        } else {
            list->node = create_temp_node(expr->rtype);
        }
        list->next = expr->data.funccall.args;
        expr->data.funccall.args = list;

        if (expr->data.funccall.funcref->flags & ENODE_FLAG_10)
            expr = CSOM_EnvCheck(expr, list);

        expr = makemonadicnode(expr, EINDIRECT);
        expr->data.monadic->rtype = CDecl_NewPointerType(expr->rtype);
        return expr;
    }

    if (expr->data.funccall.funcref->flags & ENODE_FLAG_10)
        expr = CSOM_EnvCheck(expr, NULL);
    return expr;
}

ENode *funccallexpr(Object *func, ENode *arg1, ENode *arg2, ENode *arg3, ENode *arg4) {
    ENode *expr;
    TypeFunc *tfunc;
    ENodeList *list;

    tfunc = TYPE_FUNC(func->type);
#line 1411
    CError_ASSERT(IS_TYPE_FUNC(tfunc));

    expr = lalloc(sizeof(ENode));
    expr->type = EFUNCCALL;
    expr->cost = 4;
    expr->rtype = tfunc->functype;
    expr->flags = tfunc->qual & ENODE_FLAG_QUALS;
    expr->data.funccall.funcref = create_objectrefnode(func);
    expr->data.funccall.functype = tfunc;

    if (arg1) {
        list = lalloc(sizeof(ENodeList));
        expr->data.funccall.args = list;
        list->node = arg1;
        if (arg2) {
            list->next = lalloc(sizeof(ENodeList));
            list = list->next;
            list->node = arg2;
            if (arg3) {
                list->next = lalloc(sizeof(ENodeList));
                list = list->next;
                list->node = arg3;
                if (arg4) {
                    list->next = lalloc(sizeof(ENodeList));
                    list = list->next;
                    list->node = arg4;
                }
            }
        }
        list->next = NULL;
    } else {
        expr->data.funccall.args = NULL;
    }

    return CExpr_AdjustFunctionCall(expr);
}

ENode *CExpr_FuncCallSix(Object *func, ENode *arg1, ENode *arg2, ENode *arg3, ENode *arg4, ENode *arg5, ENode *arg6) {
    ENode *expr;
    TypeFunc *tfunc;
    ENodeList *list;

    tfunc = TYPE_FUNC(func->type);
#line 1460
    CError_ASSERT(IS_TYPE_FUNC(tfunc));

    expr = lalloc(sizeof(ENode));
    expr->type = EFUNCCALL;
    expr->cost = 4;
    expr->rtype = tfunc->functype;
    expr->flags = tfunc->qual & ENODE_FLAG_QUALS;
    expr->data.funccall.funcref = create_objectrefnode(func);
    expr->data.funccall.functype = tfunc;

    list = lalloc(sizeof(ENodeList));
    expr->data.funccall.args = list;
    list->node = arg1;
    list->next = lalloc(sizeof(ENodeList));
    list = list->next;
    list->node = arg2;
    list->next = lalloc(sizeof(ENodeList));
    list = list->next;
    list->node = arg3;
    list->next = lalloc(sizeof(ENodeList));
    list = list->next;
    list->node = arg4;
    list->next = lalloc(sizeof(ENodeList));
    list = list->next;
    list->node = arg5;
    if (arg6) {
        list->next = lalloc(sizeof(ENodeList));
        list = list->next;
        list->node = arg6;
    }
    list->next = NULL;

    return CExpr_AdjustFunctionCall(expr);
}

static void CExpr_CalcStdAssign(short checkresult, Match5 *match, Type *t1, UInt32 q1, Type *t2, UInt32 q2, Boolean flag) {
    memclrw(match, sizeof(Match5));
    switch (checkresult) {
        case CheckResult1:
            match->x0++;
            break;
        case CheckResult2:
            match->x2++;
            break;
        case CheckResult3:
            match->x4++;
            match->x6 += assign_value;
            break;
        default:
#line 1504
            CError_FATAL();
    }

    if (flag || (IS_TYPE_POINTER_ONLY(t2) && (IS_TYPE_POINTER_ONLY(t1) || IS_TYPEPOINTER_REFERENCE(TYPE_POINTER(t2))) != 0)) {
        if ((q2 & Q_CONST) == (q1 & Q_CONST))
            match->x8++;
        if ((q2 & Q_VOLATILE) == (q1 & Q_VOLATILE))
            match->x8++;
    }
}

void CExpr_MatchCV(Type *t1, UInt32 q1, Type *t2, UInt32 q2, Match13 *match) {
    Boolean r8;

    if (IS_TYPEPOINTER_REFERENCE(TYPE_POINTER(t2))) {
        t2 = TYPE_POINTER(t2)->target;
        r8 = 1;
    } else {
        r8 = 0;
    }

    while (IS_TYPE_POINTER_ONLY(t2) && IS_TYPE_POINTER_ONLY(t1)) {
        if (r8) {
            if ((TYPE_POINTER(t1)->qual & Q_CONST) != (TYPE_POINTER(t2)->qual & Q_CONST))
                match->xC--;
            if ((TYPE_POINTER(t1)->qual & Q_VOLATILE) != (TYPE_POINTER(t2)->qual & Q_VOLATILE))
                match->xC--;
        }
        t2 = TYPE_POINTER(t2)->target;
        t1 = TYPE_POINTER(t1)->target;
        r8 = 1;
    }

    if ((q1 & Q_CONST) != (q2 & Q_CONST))
        match->xC--;
    if ((q1 & Q_VOLATILE) != (q2 & Q_VOLATILE))
        match->xC--;
}

Boolean CExpr_MatchAssign(Type *type, UInt32 qual, ENode *expr, Match13 *match) {
    switch (assign_check(expr, type, qual, 0, 0, 1)) {
        case CheckResult0:
            return 0;
        case CheckResult1:
            match->x4++;
            break;
        case CheckResult2:
            match->x6++;
            break;
        case CheckResult3:
            match->x8++;
            match->xA += assign_value;
            break;
        case CheckResult4:
            match->xE++;
            match->match5.x0 += user_std_match.x0;
            match->match5.x2 += user_std_match.x2;
            match->match5.x4 += user_std_match.x4;
            match->match5.x6 += user_std_match.x6;
            match->match5.x8 += user_std_match.x8;
            break;
        default:
#line 1585
            CError_FATAL();
    }

    if (IS_TYPE_POINTER_ONLY(type))
        CExpr_MatchCV(expr->rtype, expr->flags & ENODE_FLAG_QUALS, type, qual, match);

    return 1;
}

static short CExpr_StdMatchCompare(Match5 *a, Match5 *b, Boolean flag) {
    if (a->x0 > b->x0) return 1;
    if (a->x0 == b->x0) {
        if (a->x2 > b->x2) return 1;
        if (a->x2 == b->x2) {
            if (a->x4 > b->x4) return 1;
            if (a->x4 == b->x4) {
                if (a->x6 > b->x6) return 1;
                if (a->x6 == b->x6) {
                    if (!flag)
                        return 0;
                    if (a->x8 > b->x8) return 1;
                    if (a->x8 == b->x8) return 0;
                }
            }
        }
    }
    return -1;
}

static short CExpr2_MemberPointerConversion(Type *type, ENode *expr, Boolean flag1) {
    // returns CheckResult
}

ENode *CExpr_ClassPointerCast(BClassList *cls, ENode *origexpr, Boolean nullcheckflag) {
    ENode *expr;
    ClassList *base;
    Boolean do_nullcheck;
    TypeClass *tclass;
    SInt32 offset;
    ENode *tmp;

    expr = origexpr;
    tclass = TYPE_CLASS(cls->type);
    do_nullcheck = 0;
#line 1691
    CError_ASSERT(cls);

    if (!IS_TYPE_POINTER_ONLY(origexpr->rtype)) {
        CError_Error(CErrorStr141);
        return origexpr;
    }

    cls = cls->next;
    while (cls) {
        for (base = tclass->bases; base; base = base->next) {
            if (base->base == TYPE_CLASS(cls->type))
                break;
        }

        if (!base) {
            CError_Error(CErrorStr221);
            while (cls->next)
                cls = cls->next;

            tmp = nullnode();
            tmp->rtype = CDecl_NewPointerType(cls->type);
            return tmp;
        }

        if (base->is_virtual) {
            if (!base->base->sominfo) {
                do_nullcheck = 1;
                if ((offset = base->offset) && !canadd(expr, offset)) {
                    expr = makediadicnode(expr, intconstnode(TYPE(&stunsignedlong), offset), EADD);
                    optimizecomm(expr);
                }
                expr->rtype = CDecl_NewPointerType(CDecl_NewPointerType(TYPE(base->base)));
                expr = makemonadicnode(expr, EINDIRECT);
            }
        } else {
            if ((offset = base->offset)) {
                do_nullcheck = 1;
                if (!canadd(expr, offset)) {
                    expr = makediadicnode(expr, intconstnode(TYPE(&stunsignedlong), offset), EADD);
                    optimizecomm(expr);
                }
            }
        }

        switch (expr->type) {
            case EPOSTINC:
            case EPOSTDEC:
            case EPREINC:
            case EPREDEC:
                expr = makemonadicnode(expr, ETYPCON);
        }

        expr->rtype = CDecl_NewPointerType(TYPE(base->base));
        tclass = TYPE_CLASS(cls->type);
        cls = cls->next;
    }

    if (nullcheckflag && do_nullcheck)
        expr = do_castnullcheck(expr, origexpr);
    return expr;
}

ENode *CExpr_GetClassAccessNode(BClassList *a, BClassList *b, ENode *expr, Object *obj, AccessType access, Boolean flag) {
    TypeClass *tclass;
    ENode *tmp;

    if (!expr) {
        if (!cscope_currentfunc || !cscope_currentclass || !cscope_is_member_func || !(expr = CClass_CreateThisSelfExpr())) {
            CError_Error(CErrorStr221);
            return NULL;
        }
        expr = makemonadicnode(expr, EINDIRECT);
        expr->rtype = TYPE(cscope_currentclass);
    }

#line 1786
    CError_ASSERT(a);
#line 1787
    CError_ASSERT(IS_TYPE_CLASS(expr->rtype));

    tclass = TYPE_CLASS(expr->rtype);
    a = CScope_GetClassAccessPath(a, tclass);
    if (!a || a->type != TYPE(tclass)) {
        CError_Error(CErrorStr221);
        return NULL;
    }

    if (flag)
        CClass_CheckPathAccess(a, obj, access);

    if (!TYPE_CLASS(a->type)->sominfo) {
        if (b)
            a = CClass_AppendPath(a, b);

        if (!ENODE_IS(expr, EINDIRECT))
            expr = CExpr_LValue(expr, 0, 0);

        if (ENODE_IS(expr, EINDIRECT)) {
            expr->data.monadic->flags = expr->flags;
            tmp = expr->data.monadic;
            switch (tmp->type) {
                case EPOSTINC:
                case EPOSTDEC:
                case EPREINC:
                case EPREDEC:
                    tmp = makemonadicnode(tmp, ETYPCON);
            }
            expr = makemonadicnode(CExpr_ClassPointerCast(a, tmp, 0), EINDIRECT);
            expr->rtype = TYPE(tclass);
        }
    }

    return expr;
}

static short std_assign_check_overload(NameSpaceObjectList *list, TemplArg *templargs, Type *type, Boolean flag1) {
}

ENode *CExpr_ConvertToBool(ENode *expr, Boolean flag) {
    if (IS_TYPE_MEMBERPOINTER(expr->rtype))
        expr = CExpr_ConvertToCondition(expr);

    switch (expr->rtype->type) {
        case TYPEINT:
        case TYPEFLOAT:
        case TYPEENUM:
        case TYPEPOINTER:
            if (IS_TYPE_ENUM(expr->rtype))
                expr = forceintegral(expr);
            switch (expr->type) {
                case EINTCONST:
                    CInt64_SetLong(&expr->data.intval, !CInt64_IsZero(&expr->data.intval));
                    break;
                case EFLOATCONST:
                    CInt64_SetLong(&expr->data.intval, !CMach_FloatIsZero(expr->data.floatval));
                    expr->type = EINTCONST;
                    break;
                default:
                    expr = makemonadicnode(expr, ELOGNOT);
                    expr->rtype = TYPE(&stbool);
                    expr = makemonadicnode(expr, ELOGNOT);
            }
            break;
        default:
            CError_Error(
                    flag ? CErrorStr247 : CErrorStr209,
                    expr->rtype,
                    expr->flags & ENODE_FLAG_QUALS,
                    &stbool,
                    0);
            expr = nullnode();
    }

    expr->rtype = TYPE(&stbool);
    return expr;
}

static short std_assign_check(ENode *expr, Type *type, Boolean flag1, Boolean flag2) {
    short result;

    if (copts.cplusplus) {
        illegalimplicitconversion = 0;

        if ((result = iscpp_typeequal(expr->rtype, type))) {
            assign_node = expr;
            if (result == -1) {
                assign_value = 1;
                return CheckResult3;
            } else {
                return CheckResult1;
            }
        }

        if (flag1 && illegalimplicitconversion) {
            CError_Error(CErrorStr209, expr->rtype, expr->flags & ENODE_FLAG_QUALS, type, 0);
            return CheckResult0;
        }
    } else {
        if (is_typeequal(expr->rtype, type)) {
            assign_node = expr;
            return CheckResult1;
        }
    }

    if (type == TYPE(&stbool)) {
        switch (expr->rtype->type) {
            case TYPEPOINTER:
            case TYPEMEMBERPOINTER:
                assign_value = 0;
            case TYPEINT:
            case TYPEFLOAT:
            case TYPEENUM:
                if (flag1)
                    assign_node = CExpr_ConvertToBool(expr, 0);
                return CheckResult3;
            default:
                return CheckResult0;
        }
    }

    if (IS_TYPE_ENUM(expr->rtype) && (IS_TYPE_INT(type) || IS_TYPE_FLOAT(type))) {
        result = CheckResult3;
        if (IS_TYPE_INT(type)) {
            if (TYPE_ENUM(expr->rtype)->enumtype == type) {
                result = CheckResult2;
            } else if (TYPE_INTEGRAL(TYPE_ENUM(expr->rtype)->enumtype)->integral < IT_INT) {
                switch (TYPE_INTEGRAL(type)->integral) {
                    case IT_INT:
                        if (expr->rtype->size < stsignedint.size || TYPE_ENUM(expr->rtype)->enumtype == TYPE(&stsignedshort))
                            result = CheckResult2;
                        break;
                    case IT_UINT:
                        if (expr->rtype->size >= stsignedint.size && TYPE_ENUM(expr->rtype)->enumtype != TYPE(&stsignedshort))
                            result = CheckResult2;
                        break;
                }
            }
        }
        if (flag1) {
            expr->rtype = TYPE_ENUM(expr->rtype)->enumtype;
            assign_node = promote(expr, type);
        }
        return result;
    }

    if (IS_TYPE_INT(expr->rtype) && (IS_TYPE_INT(type) || IS_TYPE_FLOAT(type))) {
        result = CheckResult3;
        if (TYPE_INTEGRAL(expr->rtype)->integral <= IT_INT) {
            if (type == TYPE(&stsignedint) || type == TYPE(&stunsignedint)) {
                switch (TYPE_INTEGRAL(type)->integral) {
                    case IT_INT:
                        if (expr->rtype->size < stsignedint.size || type != TYPE(&stunsignedshort))
                            result = CheckResult2;
                        break;
                    case IT_UINT:
                        if (expr->rtype->size == stsignedint.size && type == TYPE(&stunsignedshort))
                            result = CheckResult2;
                        break;
                }
            }
        }

        if (flag1 && type != expr->rtype)
            assign_node = promote(expr, type);
        else
            assign_node = expr;
        return result;
    }

    if (IS_TYPE_FLOAT(expr->rtype) && (IS_TYPE_INT(type) || IS_TYPE_FLOAT(type))) {
        if (type == TYPE(&stdouble) && (expr->rtype == TYPE(&stfloat) || expr->rtype == TYPE(&stshortdouble)))
            result = CheckResult2;
        else
            result = CheckResult3;

        if (flag1 && (!IS_TYPE_FLOAT(type) || type->size != expr->rtype->size))
            assign_node = promote(expr, type);
        else
            assign_node = expr;
        return result;
    }

    if (IS_TYPE_POINTER_ONLY(type)) {
        if (ENODE_IS(expr, EINTCONST) && CInt64_IsZero(&expr->data.intval) && (IS_TYPE_INT(expr->rtype) || (!copts.cplusplus && IS_TYPE_ENUM(expr->rtype)))) {
            if (flag1)
                expr->rtype = TYPE(&stunsignedlong);
            assign_node = expr;
            return CheckResult3;
        }
        if (ENODE_IS(expr, EOBJLIST)) {
            return std_assign_check_overload(expr->data.objlist.list, expr->data.objlist.templargs, type, flag1);
        }
        if (IS_TYPE_POINTER_ONLY(expr->rtype)) {
            if (ENODE_IS(expr, EOBJREF) && IS_TYPE_FUNC(expr->data.objref->type) && (TYPE_FUNC(expr->data.objref->type)->flags & FUNC_FLAGS_100000)) {
                NameSpaceObjectList list;
                list.next = NULL;
                list.object = OBJ_BASE(expr->data.objref);
                return std_assign_check_overload(&list, NULL, type, flag1);
            }
            if (copts.objective_c && CObjC_IsCompatibleType(expr->rtype, type)) {
                assign_value = 1;
                return CheckResult3;
            }
            if (IS_TYPE_CLASS(TYPE_POINTER(expr->rtype)->target) && IS_TYPE_CLASS(TYPE_POINTER(type)->target)) {
                short depth;
                Boolean isambig;
                BClassList *path;
                path = CClass_GetBasePath(
                        TYPE_CLASS(TYPE_POINTER(expr->rtype)->target),
                        TYPE_CLASS(TYPE_POINTER(type)->target),
                        &depth, &isambig
                        );
                if (path) {
                    assign_value = 1000 - depth;
                    if (flag1) {
                        if (isambig)
                            CError_Error(CErrorStr188);
                        if (flag2)
                            CClass_CheckPathAccess(path, NULL, ACCESSPUBLIC);
                        assign_node = CExpr_ClassPointerCast(path, expr, 1);
                    }
                    return CheckResult3;
                } else {
                    if (flag1) {
                        if (isambig)
                            CError_Error(CErrorStr188);
                        else
                            CError_Error(
                                    CErrorStr244,
                                    expr->rtype,
                                    expr->flags & ENODE_FLAG_QUALS,
                                    type,
                                    0);
                    }
                    return CheckResult0;
                }
            }
        }
    }

    if (IS_TYPE_MEMBERPOINTER(type) && !IS_TYPE_CLASS(expr->rtype)) {
        return CExpr2_MemberPointerConversion(type, expr, flag1);
    }

    if (IS_TYPE_CLASS(expr->rtype) && IS_TYPE_CLASS(type)) {
        short depth;
        Boolean isambig;
        BClassList *path;
        path = CClass_GetBasePath(
                TYPE_CLASS(expr->rtype),
                TYPE_CLASS(type),
                &depth, &isambig
        );
        if (path) {
            assign_value = 1000 - depth;
            if (flag1) {
                if (isambig)
                    CError_Error(CErrorStr188);
                CClass_CheckPathAccess(path, NULL, ACCESSPUBLIC);
                assign_node = getnodeaddress(expr, 0);
                assign_node = CExpr_ClassPointerCast(path, assign_node, 0);
                assign_node = makemonadicnode(assign_node, EINDIRECT);
                assign_node->rtype = type;
            }
            return CheckResult3;
        }
    }

    if (IS_TYPE_ENUM(type)) {
        switch (expr->rtype->type) {
            case TYPEINT:
            case TYPEFLOAT:
            case TYPEENUM:
                if (!copts.cplusplus) {
                    if (flag1) {
                        if (copts.pedantic)
                            CError_Warning(CErrorStr217, expr->rtype, expr->flags & ENODE_FLAG_QUALS, type, 0);
                        assign_node = do_typecast(expr, type, 0);
                        assign_node->flags = expr->flags;
                    }
                    return CheckResult2;
                } else {
                    if (flag1)
                        CError_Error(CErrorStr217, expr->rtype, expr->flags & ENODE_FLAG_QUALS, type, 0);
                }
        }
    }

    return CodeGen_AssignCheck(expr, type, flag1, flag2);
}

static short is_compatible_conversion(Type *a, Type *b) {
    if (IS_TYPE_REFERENCE(a))
        a = TYPE_POINTER(a)->target;
    if (IS_TYPE_REFERENCE(b))
        b = TYPE_POINTER(b)->target;
    return iscpp_typeequal(b, a);
}

static void CExpr_ConIteratorInit(ConIterator *iter) {
    ClassList *base;
    ConIterator *subiter;
    ConIteratorList *list;

    for (base = iter->tclass->bases; base; base = base->next) {
        if (base->base->flags & CLASS_FLAGS_40) {
            subiter = galloc(sizeof(ConIterator));
            memclrw(subiter, sizeof(ConIterator));
            subiter->parent = iter;
            subiter->tclass = base->base;
            CExpr_ConIteratorInit(subiter);

            list = galloc(sizeof(ConIteratorList));
            memclrw(list, sizeof(ConIteratorList));
            list->iter = subiter;
            list->next = iter->children;
            iter->children = list;
        }
    }
}

void CExpr_ConversionIteratorInit(ConversionIterator *iter, TypeClass *tclass) {
    memclrw(iter, sizeof(ConversionIterator));
    if (tclass->flags & CLASS_FLAGS_40) {
        iter->coniter = &iter->myconiter;
        iter->myconiter.tclass = tclass;
        CExpr_ConIteratorInit(&iter->myconiter);
        CScope_InitObjectIterator(&iter->objiter, tclass->nspace);
    }
}

static Boolean CExpr_ConversionIteratorIsHidden(ConIterator *iter, TypeFunc *tfunc) {
    CScopeObjectIterator objiter;
    ObjBase *obj;
    TypeFunc *objtfunc;

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

            objtfunc = TYPE_FUNC(OBJECT(obj)->type);
            if (
                    IS_TYPE_FUNC(objtfunc) &&
                    (objtfunc->flags & FUNC_FLAGS_40) &&
                    is_compatible_conversion(tfunc->functype, objtfunc->functype) &&
                            (tfunc->args->qual & Q_CONST) == (objtfunc->args->qual & Q_CONST) &&
                            (tfunc->qual & Q_CONST) == (objtfunc->qual & Q_CONST)
                    )
                return 1;
        }
        iter = iter->parent;
    }

    return 0;
}

Object *CExpr_ConversionIteratorNext(ConversionIterator *iter) {
    ConIterator *ci;
    Object *obj;

    ci = iter->coniter;
    if (!ci)
        return NULL;

restart:
    if ((obj = OBJECT(CScope_NextObjectIteratorObject(&iter->objiter)))) {
        if (
                IS_TYPE_FUNC(obj->type) &&
                (TYPE_FUNC(obj->type)->flags & FUNC_FLAGS_40) &&
                !CExpr_ConversionIteratorIsHidden(ci->parent, TYPE_FUNC(obj->type))
                ) {
            return obj;
        }
        goto restart;
    }

    do {
        if (ci->children) {
            iter->coniter = ci->children->iter;
            ci->children = ci->children->next;
            ci = iter->coniter;
            CScope_InitObjectIterator(&iter->objiter, ci->tclass->nspace);
            goto restart;
        }
    } while ((ci = ci->parent));

    return NULL;
}

void user_assign_check() {}

ENode *CExpr_ConvertToCondition(ENode *expr) {
    switch (expr->rtype->type) {
        case TYPEINT:
        case TYPEFLOAT:
        case TYPEPOINTER:
            return expr;
        case TYPEENUM:
            expr->rtype = TYPE_ENUM(expr->rtype)->enumtype;
            return expr;
        case TYPEMEMBERPOINTER:
            return memberpointercompare(ENOTEQU, expr, nullnode());
        case TYPECLASS:
            return CExpr_Convert(expr, TYPE(&stbool), 0, 0, 1);
        default:
            CError_Error(376, expr->rtype, expr->flags & ENODE_FLAG_QUALS);
            return nullnode();
    }
}

void CExpr_ConvertToIntegral() {}
void CExpr_CheckArithmConversion() {}
void get_address_of_temp_copy() {}

short assign_check(ENode *expr, Type *type, UInt32 qual, Boolean flag1, Boolean flag2, Boolean flag3) {
}

void CExpr_MatchCompare() {}
static void MatchOverloadFunc() {}
void CExpr_GetFuncMatchArgs() {}

static NameSpaceObjectList *CExpr_CopyNameSpaceObjectList(NameSpaceObjectList *list) {
    NameSpaceObjectList *first;
    NameSpaceObjectList *work;

    first = work = lalloc(sizeof(NameSpaceObjectList));
    while (1) {
        work->object = list->object;
        list = list->next;
        if (!list) {
            work->next = NULL;
            break;
        } else {
            work->next = lalloc(sizeof(NameSpaceObjectList));
            work = work->next;
        }
    }
    return first;
}

static void CExpr_MatchArgList() {}

ENode *CExpr_GetDefaultArgument(ENode *funcexpr, FuncArg *arg) {
    ENode *tmp;

    if (CTemplTool_IsTemplateArgumentDependentExpression(arg->dexpr)) {
#line 3264
        CError_ASSERT(ENODE_IS(funcexpr, EOBJREF));
        tmp = CTemplTool_DeduceDefaultArg(
                funcexpr->data.objref,
                CInline_CopyExpression(arg->dexpr, CopyMode0)
                );
        return argumentpromotion(tmp, arg->type, arg->qual, 1);
    }

    return CInline_CopyExpression(arg->dexpr, CopyMode0);
}

static ENode *CExpr_GenericCall(ENode *funcexpr, ENodeList *argexprs, TypeFunc *tfunc, FuncArg *args) {
    ENodeList *list;
    ENode *callexpr;

    while (args) {
        if (args->dexpr) {
            if (argexprs) {
                list = argexprs;
                while (list->next)
                    list = list->next;
                list->next = lalloc(sizeof(ENodeList));
                list = list->next;
            } else {
                list = argexprs = lalloc(sizeof(ENodeList));
            }
            list->next = NULL;
            list->node = CExpr_GetDefaultArgument(funcexpr, args);
        }
        args = args->next;
    }

    callexpr = lalloc(sizeof(ENode));
    callexpr->type = EFUNCCALL;
    callexpr->cost = 4;
    callexpr->rtype = tfunc->functype;
    callexpr->flags = tfunc->qual & ENODE_FLAG_QUALS;
    callexpr->data.funccall.funcref = funcexpr;
    callexpr->data.funccall.funcref->rtype = CDecl_NewPointerType(TYPE(tfunc));
    callexpr->data.funccall.args = argexprs;
    callexpr->data.funccall.functype = tfunc;
    funcexpr->data.objref->flags |= OBJECT_FLAGS_UNUSED;
    return CExpr_AdjustFunctionCall(callexpr);
}

static Boolean CExpr_IsObjrefPlusX(ENode *expr) {
    Type *type;

    if (ENODE_IS(expr, EOBJREF)) {
        type = expr->data.objref->type;
        while (IS_TYPE_ARRAY(type))
            type = TYPE_POINTER(type)->target;
        return IS_TYPE_CLASS(type);
    }

    if (ENODE_IS2(expr, EADD, ESUB)) {
        if (CExpr_IsObjrefPlusX(expr->data.diadic.left))
            return 1;
        if (CExpr_IsObjrefPlusX(expr->data.diadic.right))
            return 1;
    }

    return 0;
}

static Boolean CExpr_IsStaticType(ENode *expr) {
    return ENODE_IS(expr, EINDIRECT) && CExpr_IsObjrefPlusX(expr->data.monadic);
}

ENode *CExpr_VarArgPromotion(ENode *expr, Boolean flag) {
    if (!copts.old_argmatch)
        expr = pointer_generation(expr);

    switch (expr->rtype->type) {
        case TYPEVOID:
        case TYPEFUNC:
            CError_Error(CErrorStr353);
            expr = nullnode();
            break;
        case TYPEINT:
        case TYPEENUM:
            expr = integralpromote(expr);
            break;
        case TYPEFLOAT:
            if (TYPE_INTEGRAL(expr->rtype)->integral < IT_DOUBLE)
                expr = promote(expr, TYPE(&stdouble));
            break;
        case TYPECLASS:
            expr = classargument(expr);
            break;
    }

    if (!flag && copts.warn_largeargs) {
        if ((IS_TYPE_INT(expr->rtype) && TYPE_INTEGRAL(expr->rtype)->integral >= IT_LONGLONG) || IS_TYPE_FLOAT(expr->rtype))
            CError_Warning(CErrorStr316);
    }

    return expr;
}

void CExpr_GenericFuncCall() {}
void CExpr_GenericPtmfCall() {}
static void CExpr_ConvertEMember() {}
void CExpr_MakeFunctionCall() {}
static void accept_conversion_type() {}
static void CExpr_OperatorConversion() {}
static void wild_conversion_check() {}
static void monadic_conversion_check() {}
static void is_legal_type_combination() {}
static void match_class_type_conversion() {}
static void match_type_class_conversion() {}
static void match_class_class_conversion() {}
void CExpr_CheckOperatorConversion() {}
void CExpr_CheckOperator() {}

ENode *CExpr_ConstructObject(TypeClass *tclass, ENode *addr_expr, ENodeList *args, Boolean flag1, Boolean flag2, Boolean flag3, Boolean flag4, Boolean flag5) {
    ENode *expr;
    Object *ctor;

#line 4595
    CError_ASSERT(IS_TYPE_POINTER_ONLY(addr_expr->rtype));

    addr_expr = makemonadicnode(addr_expr, EINDIRECT);
    addr_expr->rtype = TYPE(tclass);

    if (!flag3 && args && !args->next && args->node->rtype == TYPE(tclass) && !CClass_CopyConstructor(tclass)) {
#line 4605
        CError_ASSERT(IS_TYPE_CLASS(addr_expr->rtype));
        expr = makediadicnode(addr_expr, args->node, EASS);
        if (!flag1)
            expr = getnodeaddress(expr, 0);
        return expr;
    }

    if ((ctor = CClass_Constructor(tclass))) {
        if (tclass->flags & CLASS_FLAGS_20) {
            ENodeList *list = lalloc(sizeof(ENodeList));
            list->next = args;
            args = list;
            list->node = intconstnode(TYPE(&stsignedshort), flag2 != 0);
        }
        // TODO: 12CE80 call to genericfunccall
    } else {
        if (args) {
            if (!args->next && ENODE_IS(addr_expr, EINDIRECT)) {
                return makediadicnode(
                        addr_expr,
                        CExpr_AssignmentPromotion(args->node, TYPE(tclass), 0, 1),
                        EASS);
            }
            CError_Error(174);
        }
        return addr_expr;
    }
}

static void CExpr_DeleteFuncCall() {}
static void CExpr_CopyPlacementNewArg() {}
static void CExpr_PlacementDeleteCall() {}
static void scan_type_name() {}
static void cv_qualifier_list() {}
static void scan_new_declarator() {}
static void scan_new_type_name() {}
static void CExpr_NewAlloc() {}
static void CExpr_NewExceptionSafeAlloc() {}
static void CExpr_NewExceptionSafeInit() {}
static void CExpr_NewArray() {}
static void CExpr_NewSimpleClass() {}
static void CExpr_NewClass() {}
void scannew() {}
static void CExpr_DeleteArray() {}
void scandelete() {}