// File: /workspace/github_c_makefile_star2_O2/nilyang[P]redis-tdd-annotation/src/t_zset.c
// Function: genericZrangebyscoreCommand
void genericZrangebyscoreCommand(redisClient *c, int reverse) {
    zrangespec range;
    robj *key = c->argv[1];
    robj *zobj;
    long offset = 0, limit = -1;
    int withscores = 0;
    unsigned long rangelen = 0;
    void *replylen = NULL;
    int minidx, maxidx;

    /* Parse the range arguments. */
    if (reverse) {
        /* Range is given as [max,min] */
        maxidx = 2; minidx = 3;
    } else {
        /* Range is given as [min,max] */
        minidx = 2; maxidx = 3;
    }

    // 分析并读入范围
    if (zslParseRange(c->argv[minidx],c->argv[maxidx],&range) != REDIS_OK) {
        addReplyError(c,"min or max is not a float");
        return;
    }

    /* Parse optional extra arguments. Note that ZCOUNT will exactly have
     * 4 arguments, so we'll never enter the following code path. */
    // 分析并读入可选参数
    if (c->argc > 4) {
        int remaining = c->argc - 4;
        int pos = 4;

        while (remaining) {
            if (remaining >= 1 && !strcasecmp(c->argv[pos]->ptr,"withscores")) {
                pos++; remaining--;
                withscores = 1;
            } else if (remaining >= 3 && !strcasecmp(c->argv[pos]->ptr,"limit")) {
                if ((getLongFromObjectOrReply(c, c->argv[pos+1], &offset, NULL) != REDIS_OK) ||
                    (getLongFromObjectOrReply(c, c->argv[pos+2], &limit, NULL) != REDIS_OK)) return;
                pos += 3; remaining -= 3;
            } else {
                addReply(c,shared.syntaxerr);
                return;
            }
        }
    }

    /* Ok, lookup the key and get the range */
    // 取出有序集合对象
    if ((zobj = lookupKeyReadOrReply(c,key,shared.emptymultibulk)) == NULL ||
        checkType(c,zobj,REDIS_ZSET)) return;

    if (zobj->encoding == REDIS_ENCODING_ZIPLIST) {
        unsigned char *zl = zobj->ptr;
        unsigned char *eptr, *sptr;
        unsigned char *vstr;
        unsigned int vlen;
        long long vlong;
        double score;

        /* If reversed, get the last node in range as starting point. */
        // 迭代的方向
        if (reverse) {
            eptr = zzlLastInRange(zl,&range);
        } else {
            eptr = zzlFirstInRange(zl,&range);
        }

        /* No "first" element in the specified interval. */
        // 没有元素在指定范围之内
        if (eptr == NULL) {
            addReply(c, shared.emptymultibulk);
            return;
        }

        /* Get score pointer for the first element. */
        redisAssertWithInfo(c,zobj,eptr != NULL);
        sptr = ziplistNext(zl,eptr);

        /* We don't know in advance how many matching elements there are in the
         * list, so we push this object that will represent the multi-bulk
         * length in the output buffer, and will "fix" it later */
        replylen = addDeferredMultiBulkLength(c);

        /* If there is an offset, just traverse the number of elements without
         * checking the score because that is done in the next loop. */
        // 跳过 offset 指定数量的元素
        while (eptr && offset--) {
            if (reverse) {
                zzlPrev(zl,&eptr,&sptr);
            } else {
                zzlNext(zl,&eptr,&sptr);
            }
        }

        // 遍历并返回所有在范围内的元素
        while (eptr && limit--) {

            // 分值
            score = zzlGetScore(sptr);

            /* Abort when the node is no longer in range. */
            // 检查分值是否符合范围
            if (reverse) {
                if (!zslValueGteMin(score,&range)) break;
            } else {
                if (!zslValueLteMax(score,&range)) break;
            }

            /* We know the element exists, so ziplistGet should always succeed */
            redisAssertWithInfo(c,zobj,ziplistGet(eptr,&vstr,&vlen,&vlong));

            rangelen++;
            if (vstr == NULL) {
                addReplyBulkLongLong(c,vlong);
            } else {
                addReplyBulkCBuffer(c,vstr,vlen);
            }

            if (withscores) {
                addReplyDouble(c,score);
            }

            /* Move to next node */
            if (reverse) {
                zzlPrev(zl,&eptr,&sptr);
            } else {
                zzlNext(zl,&eptr,&sptr);
            }
        }

    } else if (zobj->encoding == REDIS_ENCODING_SKIPLIST) {
        zset *zs = zobj->ptr;
        zskiplist *zsl = zs->zsl;
        zskiplistNode *ln;

        /* If reversed, get the last node in range as starting point. */
        // 方向
        if (reverse) {
            ln = zslLastInRange(zsl,&range);
        } else {
            ln = zslFirstInRange(zsl,&range);
        }

        /* No "first" element in the specified interval. */
        // 没有值在指定范围之内
        if (ln == NULL) {
            addReply(c, shared.emptymultibulk);
            return;
        }

        /* We don't know in advance how many matching elements there are in the
         * list, so we push this object that will represent the multi-bulk
         * length in the output buffer, and will "fix" it later */
        replylen = addDeferredMultiBulkLength(c);

        /* If there is an offset, just traverse the number of elements without
         * checking the score because that is done in the next loop. */
        // 跳过 offset 参数指定的元素数量
        while (ln && offset--) {
            if (reverse) {
                ln = ln->backward;
            } else {
                ln = ln->level[0].forward;
            }
        }

        // 遍历并返回所有在范围内的元素
        while (ln && limit--) {
            /* Abort when the node is no longer in range. */
            if (reverse) {
                if (!zslValueGteMin(ln->score,&range)) break;
            } else {
                if (!zslValueLteMax(ln->score,&range)) break;
            }

            rangelen++;
            addReplyBulk(c,ln->obj);

            if (withscores) {
                addReplyDouble(c,ln->score);
            }

            /* Move to next node */
            if (reverse) {
                ln = ln->backward;
            } else {
                ln = ln->level[0].forward;
            }
        }
    } else {
        redisPanic("Unknown sorted set encoding");
    }

    if (withscores) {
        rangelen *= 2;
    }

    setDeferredMultiBulkLength(c, replylen, rangelen);
}

// Assembly:
pushq %rbp
pushq %r15
pushq %r14
pushq %r13
pushq %r12
pushq %rbx
subq $0x88, %rsp
movq %rdi, %rbx
movq 0x38(%rdi), %rax
movq 0x8(%rax), %r14
andq $0x0, 0x28(%rsp)
orq $-0x1, 0x58(%rsp)
movl %esi, %ebp
xorl %ecx, %ecx
testl %esi, %esi
sete %cl
movq 0x10(%rax,%rcx,8), %rsi
xorl $0x3, %ecx
movq (%rax,%rcx,8), %rdi
leaq 0x30(%rsp), %rdx
callq 0x3c9cf
testl %eax, %eax
je 0x3de72
leaq 0x51556(%rip), %rsi     # 0x8f3af
movq %rbx, %rdi
addq $0x88, %rsp
popq %rbx
popq %r12
popq %r13
popq %r14
popq %r15
popq %rbp
jmp 0x2c2da
movl %ebp, 0x4(%rsp)
movl 0x30(%rbx), %r12d
movq $0x0, 0x10(%rsp)
cmpl $0x5, %r12d
movq %rbx, %r13
jl 0x3df6e
movq %r14, 0x18(%rsp)
addl $-0x4, %r12d
movq $0x0, 0x10(%rsp)
pushq $0x4
popq %r14
testl %r12d, %r12d
je 0x3df69
movq 0x38(%rbx), %rbx
movl %r14d, %r15d
movq (%rbx,%r15,8), %rax
movq 0x8(%rax), %rbp
movq %rbp, %rdi
leaq 0x51626(%rip), %rsi     # 0x8f4ee
callq 0x1f2e0
pushq $0x1
popq %rcx
movl %ecx, %edx
pushq $-0x1
popq %rsi
testl %eax, %eax
je 0x3df39
cmpl $0x3, %r12d
jl 0x3df4e
movq %rbp, %rdi
leaq 0x51a5f(%rip), %rsi     # 0x8f948
callq 0x1f2e0
testl %eax, %eax
jne 0x3df4e
movq 0x8(%rbx,%r15,8), %rsi
movq %r13, %rdi
leaq 0x28(%rsp), %rdx
xorl %ecx, %ecx
callq 0x2f672
testl %eax, %eax
jne 0x3e2b6
movq %r13, %rdi
movq 0x38(%r13), %rax
movq 0x10(%rax,%r15,8), %rsi
leaq 0x58(%rsp), %rdx
xorl %ecx, %ecx
callq 0x2f672
pushq $0x3
popq %rdx
pushq $-0x3
popq %rsi
movq 0x10(%rsp), %rcx
testl %eax, %eax
jne 0x3e2b6
addl %edx, %r14d
addl %esi, %r12d
movl %ecx, %eax
movq %rax, 0x10(%rsp)
movq %r13, %rbx
jmp 0x3dea6
leaq 0x898ab(%rip), %rax     # 0xc7800
movq 0x80(%rax), %rsi
movq %r13, %rdi
callq 0x2c10d
jmp 0x3e2b6
movq 0x18(%rsp), %r14
leaq 0x8988b(%rip), %r12     # 0xc7800
movq 0x68(%r12), %rdx
movq %rbx, %rdi
movq %r14, %rsi
callq 0x2f9a9
testq %rax, %rax
je 0x3e2b6
movq %rax, %r15
pushq $0x3
popq %rdx
movq %r13, %rdi
movq %rax, %rsi
callq 0x2eec6
testl %eax, %eax
jne 0x3e2b6
movl (%r15), %eax
shrl $0x4, %eax
andl $0xf, %eax
cmpl $0x7, %eax
je 0x3dfe5
cmpl $0x5, %eax
jne 0x3e2fe
movq %r13, %rbx
movq 0x8(%r15), %rbp
movl 0x4(%rsp), %r13d
leaq 0x30(%rsp), %rsi
movq %rbp, %rdi
testl %r13d, %r13d
je 0x3e109
callq 0x3b4e3
jmp 0x3e10e
movq 0x8(%r15), %rax
movq 0x8(%rax), %rdi
cmpl $0x0, 0x4(%rsp)
je 0x3e000
leaq 0x30(%rsp), %rsi
callq 0x3a9e1
jmp 0x3e00a
leaq 0x30(%rsp), %rsi
callq 0x3a92b
movq %rax, %r14
testq %rax, %rax
je 0x3e0ff
xorl %ebx, %ebx
cmpl $0x0, 0x4(%rsp)
sete %bl
movq %r13, %rdi
callq 0x2c506
movq %rax, 0x68(%rsp)
movq 0x28(%rsp), %rax
leaq 0x10(,%rbx,8), %r15
decq %rax
testq %r14, %r14
je 0x3e053
movq %rax, 0x28(%rsp)
cmpq $-0x1, %rax
je 0x3e053
movq (%r14,%r15), %r14
jmp 0x3e03a
movl 0x40(%rsp), %ebp
movsd 0x30(%rsp), %xmm0
movsd %xmm0, 0x18(%rsp)
movsd 0x38(%rsp), %xmm0
movsd %xmm0, 0x8(%rsp)
movl 0x44(%rsp), %eax
movl %eax, 0x48(%rsp)
xorl %r12d, %r12d
movq %r13, %rbx
movl 0x4(%rsp), %r13d
testq %r14, %r14
je 0x3e29b
subq $0x1, 0x58(%rsp)
jb 0x3e29b
movsd 0x8(%r14), %xmm0
xorl %eax, %eax
xorl %ecx, %ecx
testl %r13d, %r13d
je 0x3e0b6
ucomisd 0x18(%rsp), %xmm0
setbe %al
setb %cl
testl %ebp, %ebp
jmp 0x3e0cb
movsd 0x8(%rsp), %xmm1
ucomisd %xmm0, %xmm1
setbe %al
setb %cl
cmpl $0x0, 0x48(%rsp)
cmovel %ecx, %eax
testb %al, %al
jne 0x3e29b
movq (%r14), %rsi
movq %rbx, %rdi
callq 0x2c84a
cmpl $0x0, 0x10(%rsp)
je 0x3e0f6
movsd 0x8(%r14), %xmm0
movq %rbx, %rdi
callq 0x2c607
movq (%r14,%r15), %r14
incq %r12
jmp 0x3e082
movq 0x68(%r12), %rsi
jmp 0x3df5c
callq 0x3b41a
movq %rax, %r14
movq %rax, 0x20(%rsp)
testq %rax, %rax
je 0x3e2c8
movq %rbx, 0x8(%rsp)
movq %rbp, %rbx
movq %rbp, %rdi
movq %r14, %rsi
callq 0x2ae0d
leaq 0x50(%rsp), %r12
movq %rax, (%r12)
movq 0x8(%rsp), %rdi
callq 0x2c506
movq %rax, 0x68(%rsp)
leaq 0x20(%rsp), %rbp
testq %r14, %r14
je 0x3e17d
subq $0x1, 0x28(%rsp)
jb 0x3e17d
movq %rbx, %rdi
movq %rbp, %rsi
movq %r12, %rdx
testl %r13d, %r13d
je 0x3e171
callq 0x3b2e1
jmp 0x3e176
callq 0x3b25c
movq 0x20(%rsp), %r14
jmp 0x3e14f
movl 0x40(%rsp), %ebp
movsd 0x30(%rsp), %xmm0
movsd %xmm0, 0x48(%rsp)
movsd 0x38(%rsp), %xmm0
movsd %xmm0, 0x70(%rsp)
movl 0x44(%rsp), %eax
movl %eax, 0x60(%rsp)
xorl %r12d, %r12d
testq %r14, %r14
je 0x3e296
subq $0x1, 0x58(%rsp)
jb 0x3e296
movq 0x50(%rsp), %rdi
callq 0x3b09e
movapd %xmm0, %xmm1
xorl %eax, %eax
xorl %ecx, %ecx
testl %r13d, %r13d
je 0x3e1e0
ucomisd 0x48(%rsp), %xmm1
setbe %al
setb %cl
testl %ebp, %ebp
jmp 0x3e1f5
movsd 0x70(%rsp), %xmm0
ucomisd %xmm1, %xmm0
setbe %al
setb %cl
cmpl $0x0, 0x60(%rsp)
cmovel %ecx, %eax
testb %al, %al
jne 0x3e296
movsd %xmm1, 0x18(%rsp)
movq %r14, %rdi
leaq 0x80(%rsp), %rsi
leaq 0x64(%rsp), %rdx
leaq 0x78(%rsp), %rcx
callq 0x2aea9
testl %eax, %eax
je 0x3e2d5
movq 0x80(%rsp), %rsi
testq %rsi, %rsi
je 0x3e245
movl 0x64(%rsp), %edx
movq 0x8(%rsp), %rdi
callq 0x2c87d
jmp 0x3e254
movq 0x78(%rsp), %rsi
movq 0x8(%rsp), %rdi
callq 0x2c8bb
cmpl $0x0, 0x10(%rsp)
movsd 0x18(%rsp), %xmm0
je 0x3e26b
movq 0x8(%rsp), %rdi
callq 0x2c607
movq %rbx, %rdi
leaq 0x20(%rsp), %rsi
leaq 0x50(%rsp), %rdx
testl %r13d, %r13d
je 0x3e284
callq 0x3b2e1
jmp 0x3e289
callq 0x3b25c
movq 0x20(%rsp), %r14
incq %r12
jmp 0x3e1a4
movq 0x8(%rsp), %rbx
cmpl $0x0, 0x10(%rsp)
setne %cl
shlq %cl, %r12
movq %rbx, %rdi
movq 0x68(%rsp), %rsi
movq %r12, %rdx
callq 0x2c542
addq $0x88, %rsp
popq %rbx
popq %r12
popq %r13
popq %r14
popq %r15
popq %rbp
retq
movq 0x68(%r12), %rsi
movq %rbx, %rdi
jmp 0x3df5f
leaq 0x50f1e(%rip), %rdx     # 0x8f1fa
leaq 0x50ee0(%rip), %rcx     # 0x8f1c3
movq 0x8(%rsp), %rdi
movq %r15, %rsi
movl $0xc82, %r8d            # imm = 0xC82
callq 0x4980c
pushq $0x1
popq %rdi
callq 0x1f3b0
leaq 0x4f0a2(%rip), %rdi     # 0x8d3a7
leaq 0x50eb7(%rip), %rsi     # 0x8f1c3
movl $0xcd3, %edx            # imm = 0xCD3
callq 0x490e8
jmp 0x3e2f6