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From: Mergen Imeev via Tarantool-patches <tarantool-patches@dev.tarantool.org>
To: Vladislav Shpilevoy <v.shpilevoy@tarantool.org>
Cc: tarantool-patches@dev.tarantool.org
Subject: Re: [Tarantool-patches] [PATCH v5 39/52] sql: introduce mem_to_int*() functions
Date: Wed, 14 Apr 2021 01:58:33 +0300	[thread overview]
Message-ID: <20210413225833.GA70385@tarantool.org> (raw)
In-Reply-To: <f483b1d7-aae4-8a8e-3edb-d7765f41c2db@tarantool.org>

Thank you for the review! My answers, diff and new patch below.


On Tue, Apr 13, 2021 at 01:39:01AM +0200, Vladislav Shpilevoy wrote:
> Good job on the fixes!
> 
> This is the last email for today, I will continue the review of
> the patchset tomorrow.
> 
> See 2 comments below.
> 
> > diff --git a/src/box/sql/vdbe.c b/src/box/sql/vdbe.c
> > index 71a827034..e61ad4251 100644
> > --- a/src/box/sql/vdbe.c
> > +++ b/src/box/sql/vdbe.c
> > @@ -1432,17 +1432,14 @@ case OP_AddImm: {            /* in1 */
> >   */
> >  case OP_MustBeInt: {            /* jump, in1 */
> >  	pIn1 = &aMem[pOp->p1];
> > -	if (!mem_is_int(pIn1)) {
> > -		mem_apply_type(pIn1, FIELD_TYPE_INTEGER);
> > -		if (!mem_is_int(pIn1)) {
> > -			if (pOp->p2==0) {
> > -				diag_set(ClientError, ER_SQL_TYPE_MISMATCH,
> > -					 mem_str(pIn1), "integer");
> > -				goto abort_due_to_error;
> > -			} else {
> > -				goto jump_to_p2;
> > -			}
> > -		}
> > +	if (mem_is_int(pIn1))
> 
> 1. The same check is done inside mem_to_int_precise(). You
> don't need to do it manually.
> 
Thanks, fixed.

> > +		break;
> > +	if (mem_to_int_precise(pIn1) != 0) {
> > +		if (pOp->p2 !=0 )
> 
> 2. Whitespace should be before '0', not after.
> 
Fixed.

> > +			goto jump_to_p2;
> > +		diag_set(ClientError, ER_SQL_TYPE_MISMATCH,
> > +			 mem_str(pIn1), "integer");
> > +		goto abort_due_to_error;
> >  	}
> >  	break;
> >  }
> > 


Diff:


diff --git a/src/box/sql/vdbe.c b/src/box/sql/vdbe.c
index 061f77952..c908f13c0 100644
--- a/src/box/sql/vdbe.c
+++ b/src/box/sql/vdbe.c
@@ -1435,10 +1435,8 @@ case OP_AddImm: {            /* in1 */
  */
 case OP_MustBeInt: {            /* jump, in1 */
 	pIn1 = &aMem[pOp->p1];
-	if (mem_is_int(pIn1))
-		break;
 	if (mem_to_int_precise(pIn1) != 0) {
-		if (pOp->p2 !=0 )
+		if (pOp->p2 != 0)
 			goto jump_to_p2;
 		diag_set(ClientError, ER_SQL_TYPE_MISMATCH,
 			 mem_str(pIn1), "integer");


New patch:


commit ecf63aa8a6887b3b1ac7a67a6b60fe3a62426ed9
Author: Mergen Imeev <imeevma@gmail.com>
Date:   Wed Mar 17 10:46:29 2021 +0300

    sql: introduce mem_to_int*() functions
    
    This patch introduces mem_to_int() and mem_to_int_precise() functions.
    These functions are used to convert a MEM to a MEM that contains
    integer value. These functions defines the rules that are used during
    convertion from values of all other types to INTEGER.
    
    Part of #5818

diff --git a/src/box/sql/mem.c b/src/box/sql/mem.c
index 3930067e1..fd68acd6e 100644
--- a/src/box/sql/mem.c
+++ b/src/box/sql/mem.c
@@ -492,6 +492,90 @@ mem_set_null_clear(struct Mem *mem)
 	mem->flags = MEM_Null | MEM_Cleared;
 }
 
+static inline int
+bytes_to_int(struct Mem *mem)
+{
+	bool is_neg;
+	int64_t i;
+	if (sql_atoi64(mem->z, &i, &is_neg, mem->n) != 0)
+		return -1;
+	mem_set_int(mem, i, is_neg);
+	return 0;
+}
+
+static inline int
+double_to_int(struct Mem *mem)
+{
+	double d = mem->u.r;
+	if (d < 0 && d >= (double)INT64_MIN) {
+		mem->u.i = (int64_t)d;
+		mem->flags = MEM_Int;
+		mem->field_type = FIELD_TYPE_INTEGER;
+		return 0;
+	}
+	if (d >= 0 && d < (double)UINT64_MAX) {
+		mem->u.u = (uint64_t)d;
+		mem->flags = MEM_UInt;
+		mem->field_type = FIELD_TYPE_UNSIGNED;
+		return 0;
+	}
+	return -1;
+}
+
+static inline int
+double_to_int_precise(struct Mem *mem)
+{
+	double d = mem->u.r;
+	if (d < 0 && d >= (double)INT64_MIN && (double)(int64_t)d == d) {
+		mem->u.i = (int64_t)d;
+		mem->flags = MEM_Int;
+		mem->field_type = FIELD_TYPE_INTEGER;
+		return 0;
+	}
+	if (d >= 0 && d < (double)UINT64_MAX && (double)(uint64_t)d == d) {
+		mem->u.u = (uint64_t)d;
+		mem->flags = MEM_UInt;
+		mem->field_type = FIELD_TYPE_UNSIGNED;
+		return 0;
+	}
+	return -1;
+}
+
+static inline int
+bool_to_int(struct Mem *mem)
+{
+	mem->u.u = (uint64_t)mem->u.b;
+	mem->flags = MEM_UInt;
+	mem->field_type = FIELD_TYPE_UNSIGNED;
+	return 0;
+}
+
+int
+mem_to_int(struct Mem *mem)
+{
+	if ((mem->flags & (MEM_Int | MEM_UInt)) != 0)
+		return 0;
+	if ((mem->flags & (MEM_Str | MEM_Blob)) != 0)
+		return bytes_to_int(mem);
+	if ((mem->flags & MEM_Real) != 0)
+		return double_to_int(mem);
+	if ((mem->flags & MEM_Bool) != 0)
+		return bool_to_int(mem);
+	return -1;
+}
+
+int
+mem_to_int_precise(struct Mem *mem)
+{
+	if ((mem->flags & (MEM_Int | MEM_UInt)) != 0)
+		return 0;
+	if ((mem->flags & MEM_Str) != 0)
+		return bytes_to_int(mem);
+	if ((mem->flags & MEM_Real) != 0)
+		return double_to_int_precise(mem);
+	return -1;
+}
+
 int
 mem_copy(struct Mem *to, const struct Mem *from)
 {
@@ -1694,26 +1778,6 @@ sqlVdbeMemCast(Mem * pMem, enum field_type type)
 	}
 }
 
-/*
- * The MEM structure is already a MEM_Real.  Try to also make it a
- * MEM_Int if we can.
- */
-int
-mem_apply_integer_type(Mem *pMem)
-{
-	int rc;
-	i64 ix;
-	assert(pMem->flags & MEM_Real);
-	assert(EIGHT_BYTE_ALIGNMENT(pMem));
-
-	if ((rc = doubleToInt64(pMem->u.r, (int64_t *) &ix)) == 0) {
-		pMem->u.i = ix;
-		pMem->flags = pMem->u.r <= -1 ? MEM_Int : MEM_UInt;
-		pMem->field_type = FIELD_TYPE_INTEGER;
-	}
-	return rc;
-}
-
 /*
  * Add MEM_Str to the set of representations for the given Mem.  Numbers
  * are converted using sql_snprintf().  Converting a BLOB to a string
@@ -1985,34 +2049,6 @@ mem_convert_to_unsigned(struct Mem *mem)
 	return 0;
 }
 
-/**
- * Convert the numeric value contained in MEM to integer.
- *
- * @param mem The MEM that contains the numeric value.
- * @retval 0 if the conversion was successful, -1 otherwise.
- */
-static int
-mem_convert_to_integer(struct Mem *mem)
-{
-	if ((mem->flags & (MEM_UInt | MEM_Int)) != 0)
-		return 0;
-	if ((mem->flags & MEM_Real) == 0)
-		return -1;
-	double d = mem->u.r;
-	if (d >= (double)UINT64_MAX || d < (double)INT64_MIN)
-		return -1;
-	if (d < 0.) {
-		mem->u.i = (int64_t)d;
-		mem->flags = MEM_Int;
-		mem->field_type = FIELD_TYPE_INTEGER;
-	} else {
-		mem->u.u = (uint64_t)d;
-		mem->flags = MEM_UInt;
-		mem->field_type = FIELD_TYPE_UNSIGNED;
-	}
-	return 0;
-}
-
 int
 mem_convert_to_numeric(struct Mem *mem, enum field_type type)
 {
@@ -2023,7 +2059,7 @@ mem_convert_to_numeric(struct Mem *mem, enum field_type type)
 	if (type == FIELD_TYPE_UNSIGNED)
 		return mem_convert_to_unsigned(mem);
 	assert(type == FIELD_TYPE_INTEGER);
-	return mem_convert_to_integer(mem);
+	return mem_to_int(mem);
 }
 
 static int
diff --git a/src/box/sql/mem.h b/src/box/sql/mem.h
index 9890762e0..5aabcc1fd 100644
--- a/src/box/sql/mem.h
+++ b/src/box/sql/mem.h
@@ -683,6 +683,24 @@ mem_cmp_str(const struct Mem *left, const struct Mem *right, int *result,
 int
 mem_cmp_num(const struct Mem *a, const struct Mem *b, int *result);
 
+/**
+ * Convert the given MEM to INTEGER. This function and the function below define
+ * the rules that are used to convert values of all other types to INTEGER. In
+ * this function, the conversion from double to integer may result in loss of
+ * precision.
+ */
+int
+mem_to_int(struct Mem *mem);
+
+/**
+ * Convert the given MEM to INTEGER. This function and the function above define
+ * the rules that are used to convert values of all other types to INTEGER. In
+ * this function, the conversion from double to integer is only possible if it
+ * is lossless.
+ */
+int
+mem_to_int_precise(struct Mem *mem);
+
 /**
  * Simple type to str convertor. It is used to simplify
  * error reporting.
@@ -743,7 +761,6 @@ int
 vdbe_mem_numerify(struct Mem *mem);
 
 int sqlVdbeMemCast(struct Mem *, enum field_type type);
-int mem_apply_integer_type(struct Mem *);
 int sqlVdbeMemStringify(struct Mem *);
 int sqlVdbeMemNulTerminate(struct Mem *);
 int sqlVdbeMemExpandBlob(struct Mem *);
diff --git a/src/box/sql/vdbe.c b/src/box/sql/vdbe.c
index e07ff1be9..c908f13c0 100644
--- a/src/box/sql/vdbe.c
+++ b/src/box/sql/vdbe.c
@@ -1435,17 +1435,12 @@ case OP_AddImm: {            /* in1 */
  */
 case OP_MustBeInt: {            /* jump, in1 */
 	pIn1 = &aMem[pOp->p1];
-	if (!mem_is_int(pIn1)) {
-		mem_apply_type(pIn1, FIELD_TYPE_INTEGER);
-		if (!mem_is_int(pIn1)) {
-			if (pOp->p2==0) {
-				diag_set(ClientError, ER_SQL_TYPE_MISMATCH,
-					 mem_str(pIn1), "integer");
-				goto abort_due_to_error;
-			} else {
-				goto jump_to_p2;
-			}
-		}
+	if (mem_to_int_precise(pIn1) != 0) {
+		if (pOp->p2 != 0)
+			goto jump_to_p2;
+		diag_set(ClientError, ER_SQL_TYPE_MISMATCH,
+			 mem_str(pIn1), "integer");
+		goto abort_due_to_error;
 	}
 	break;
 }

  reply	other threads:[~2021-04-13 22:58 UTC|newest]

Thread overview: 107+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-09 16:51 [Tarantool-patches] [PATCH v5 00/52] Move mem-related functions to mem.c/mem.h Mergen Imeev via Tarantool-patches
2021-04-09 16:51 ` [Tarantool-patches] [PATCH v5 01/52] sql: enhance vdbe_decode_msgpack_into_mem() Mergen Imeev via Tarantool-patches
2021-04-11 17:42   ` Vladislav Shpilevoy via Tarantool-patches
2021-04-13 12:01     ` Mergen Imeev via Tarantool-patches
2021-04-13 12:12       ` Mergen Imeev via Tarantool-patches
2021-04-13 23:22       ` Vladislav Shpilevoy via Tarantool-patches
2021-04-13 23:34         ` Mergen Imeev via Tarantool-patches
2021-04-09 16:51 ` [Tarantool-patches] [PATCH v5 02/52] sql: disable unused code in sql/analyze.c Mergen Imeev via Tarantool-patches
2021-04-09 16:51 ` [Tarantool-patches] [PATCH v5 03/52] sql: disable unused code in sql/legacy.c Mergen Imeev via Tarantool-patches
2021-04-09 16:51 ` [Tarantool-patches] [PATCH v5 04/52] sql: remove NULL-termination in OP_ResultRow Mergen Imeev via Tarantool-patches
2021-04-14 22:23   ` Vladislav Shpilevoy via Tarantool-patches
2021-04-14 22:37     ` Mergen Imeev via Tarantool-patches
2021-04-09 16:51 ` [Tarantool-patches] [PATCH v5 05/52] sql: move MEM-related functions to mem.c/mem.h Mergen Imeev via Tarantool-patches
2021-04-09 16:59 ` [Tarantool-patches] [PATCH v5 06/52] sql: refactor port_vdbemem_*() functions Mergen Imeev via Tarantool-patches
2021-04-09 16:59 ` [Tarantool-patches] [PATCH v5 07/52] sql: remove unused MEM-related functions Mergen Imeev via Tarantool-patches
2021-04-09 16:59 ` [Tarantool-patches] [PATCH v5 08/52] sql: disable unused code in sql/vdbemem.c Mergen Imeev via Tarantool-patches
2021-04-09 16:59 ` [Tarantool-patches] [PATCH v5 09/52] sql: introduce mem_str() Mergen Imeev via Tarantool-patches
2021-04-11 17:44   ` Vladislav Shpilevoy via Tarantool-patches
2021-04-13 12:36     ` Mergen Imeev via Tarantool-patches
2021-04-14 22:23       ` Vladislav Shpilevoy via Tarantool-patches
2021-04-14 22:42         ` Mergen Imeev via Tarantool-patches
2021-04-09 16:59 ` [Tarantool-patches] [PATCH v5 10/52] sql: introduce mem_create() Mergen Imeev via Tarantool-patches
2021-04-09 17:36 ` [Tarantool-patches] [PATCH v5 11/52] sql: introduce mem_destroy() Mergen Imeev via Tarantool-patches
2021-04-11 17:46   ` Vladislav Shpilevoy via Tarantool-patches
2021-04-13 12:42     ` Mergen Imeev via Tarantool-patches
2021-04-09 17:36 ` [Tarantool-patches] [PATCH v5 12/52] sql: introduce mem_is_*() functions() Mergen Imeev via Tarantool-patches
2021-04-11 17:59   ` Vladislav Shpilevoy via Tarantool-patches
2021-04-13 16:09     ` Mergen Imeev via Tarantool-patches
2021-04-14 22:48       ` Vladislav Shpilevoy via Tarantool-patches
2021-04-14 23:07         ` Mergen Imeev via Tarantool-patches
2021-04-09 17:36 ` [Tarantool-patches] [PATCH v5 13/52] sql: introduce mem_copy() Mergen Imeev via Tarantool-patches
2021-04-11 18:06   ` Vladislav Shpilevoy via Tarantool-patches
2021-04-13 16:18     ` Mergen Imeev via Tarantool-patches
2021-04-09 17:36 ` [Tarantool-patches] [PATCH v5 14/52] sql: introduce mem_copy_as_ephemeral() Mergen Imeev via Tarantool-patches
2021-04-11 18:10   ` Vladislav Shpilevoy via Tarantool-patches
2021-04-13 16:31     ` Mergen Imeev via Tarantool-patches
2021-04-09 17:37 ` [Tarantool-patches] [PATCH v5 15/52] sql: rework mem_move() Mergen Imeev via Tarantool-patches
2021-04-11 18:10   ` Vladislav Shpilevoy via Tarantool-patches
2021-04-13 16:38     ` Mergen Imeev via Tarantool-patches
2021-04-09 17:57 ` [Tarantool-patches] [PATCH v5 16/52] sql: rework vdbe_decode_msgpack_into_mem() Mergen Imeev via Tarantool-patches
2021-04-09 17:57 ` [Tarantool-patches] [PATCH v5 17/52] sql: remove sql_column_to_messagepack() Mergen Imeev via Tarantool-patches
2021-04-14 22:58   ` Vladislav Shpilevoy via Tarantool-patches
2021-04-14 23:14     ` Mergen Imeev via Tarantool-patches
2021-04-09 17:57 ` [Tarantool-patches] [PATCH v5 18/52] sql: introduce mem_concat() Mergen Imeev via Tarantool-patches
2021-04-11 18:11   ` Vladislav Shpilevoy via Tarantool-patches
2021-04-13 16:57     ` Mergen Imeev via Tarantool-patches
2021-04-14 23:04       ` Vladislav Shpilevoy via Tarantool-patches
2021-04-14 23:22         ` Mergen Imeev via Tarantool-patches
2021-04-09 17:57 ` [Tarantool-patches] [PATCH v5 19/52] sql: introduce arithmetic operations for MEM Mergen Imeev via Tarantool-patches
2021-04-11 18:13   ` Vladislav Shpilevoy via Tarantool-patches
2021-04-13 17:06     ` Mergen Imeev via Tarantool-patches
2021-04-14 23:10       ` Vladislav Shpilevoy via Tarantool-patches
2021-04-14 23:33         ` Mergen Imeev via Tarantool-patches
2021-04-09 17:57 ` [Tarantool-patches] [PATCH v5 20/52] sql: introduce mem_compare() Mergen Imeev via Tarantool-patches
2021-04-11 18:16   ` Vladislav Shpilevoy via Tarantool-patches
2021-04-13 18:33     ` Mergen Imeev via Tarantool-patches
2021-04-14 23:20       ` Vladislav Shpilevoy via Tarantool-patches
2021-04-14 23:40         ` Mergen Imeev via Tarantool-patches
2021-04-09 18:11 ` [Tarantool-patches] [PATCH v5 21/52] sql: introduce bitwise operations for MEM Mergen Imeev via Tarantool-patches
2021-04-12 23:31   ` Vladislav Shpilevoy via Tarantool-patches
2021-04-13 20:49     ` Mergen Imeev via Tarantool-patches
2021-04-09 18:11 ` [Tarantool-patches] [PATCH v5 22/52] sql: Initialize MEM in sqlVdbeAllocUnpackedRecord() Mergen Imeev via Tarantool-patches
2021-04-09 18:11 ` [Tarantool-patches] [PATCH v5 23/52] sql: introduce mem_set_null() Mergen Imeev via Tarantool-patches
2021-04-09 18:11 ` [Tarantool-patches] [PATCH v5 24/52] sql: introduce mem_set_int() Mergen Imeev via Tarantool-patches
2021-04-12 23:32   ` Vladislav Shpilevoy via Tarantool-patches
2021-04-13 20:56     ` Mergen Imeev via Tarantool-patches
2021-04-09 18:11 ` [Tarantool-patches] [PATCH v5 25/52] sql: introduce mem_set_uint() Mergen Imeev via Tarantool-patches
2021-04-09 19:45 ` [Tarantool-patches] [PATCH v5 26/52] sql: move mem_set_bool() and mem_set_double() Mergen Imeev via Tarantool-patches
2021-04-09 19:45 ` [Tarantool-patches] [PATCH v5 27/52] sql: introduce mem_set_str_*() functions Mergen Imeev via Tarantool-patches
2021-04-12 23:34   ` Vladislav Shpilevoy via Tarantool-patches
2021-04-13 21:36     ` Mergen Imeev via Tarantool-patches
2021-04-14 23:49       ` Vladislav Shpilevoy via Tarantool-patches
2021-04-15  1:25         ` Mergen Imeev via Tarantool-patches
2021-04-09 19:45 ` [Tarantool-patches] [PATCH v5 28/52] sql: introduce mem_copy_str() and mem_copy_str0() Mergen Imeev via Tarantool-patches
2021-04-12 23:35   ` Vladislav Shpilevoy via Tarantool-patches
2021-04-13 22:00     ` Mergen Imeev via Tarantool-patches
2021-04-14 23:54       ` Vladislav Shpilevoy via Tarantool-patches
2021-04-15  0:30         ` Mergen Imeev via Tarantool-patches
2021-04-09 19:45 ` [Tarantool-patches] [PATCH v5 29/52] sql: introduce mem_set_bin_*() functions Mergen Imeev via Tarantool-patches
2021-04-09 19:45 ` [Tarantool-patches] [PATCH v5 30/52] sql: introduce mem_copy_bin() Mergen Imeev via Tarantool-patches
2021-04-12 23:36   ` Vladislav Shpilevoy via Tarantool-patches
2021-04-13 22:06     ` Mergen Imeev via Tarantool-patches
2021-04-09 20:05 ` [Tarantool-patches] [PATCH v5 31/52] sql: introduce mem_set_zerobin() Mergen Imeev via Tarantool-patches
2021-04-09 20:05 ` [Tarantool-patches] [PATCH v5 32/52] sql: introduce mem_set_*() for map and array Mergen Imeev via Tarantool-patches
2021-04-12 23:36   ` Vladislav Shpilevoy via Tarantool-patches
2021-04-13 22:08     ` Mergen Imeev via Tarantool-patches
2021-04-09 20:05 ` [Tarantool-patches] [PATCH v5 33/52] sql: introduce mem_set_invalid() Mergen Imeev via Tarantool-patches
2021-04-09 20:05 ` [Tarantool-patches] [PATCH v5 34/52] sql: refactor mem_set_ptr() Mergen Imeev via Tarantool-patches
2021-04-09 20:05 ` [Tarantool-patches] [PATCH v5 35/52] sql: introduce mem_set_frame() Mergen Imeev via Tarantool-patches
2021-04-12 23:37   ` Vladislav Shpilevoy via Tarantool-patches
2021-04-13 22:19     ` Mergen Imeev via Tarantool-patches
2021-04-09 20:25 ` [Tarantool-patches] [PATCH v5 36/52] sql: introduce mem_set_agg() Mergen Imeev via Tarantool-patches
2021-04-12 23:37   ` Vladislav Shpilevoy via Tarantool-patches
2021-04-13 22:46     ` Mergen Imeev via Tarantool-patches
2021-04-09 20:25 ` [Tarantool-patches] [PATCH v5 37/52] sql: introduce mem_set_null_clear() Mergen Imeev via Tarantool-patches
2021-04-12 23:38   ` Vladislav Shpilevoy via Tarantool-patches
2021-04-13 22:50     ` Mergen Imeev via Tarantool-patches
2021-04-09 20:25 ` [Tarantool-patches] [PATCH v5 38/52] sql: move MEM flags to mem.c Mergen Imeev via Tarantool-patches
2021-04-13 20:42   ` Mergen Imeev via Tarantool-patches
2021-04-09 20:25 ` [Tarantool-patches] [PATCH v5 39/52] sql: introduce mem_to_int*() functions Mergen Imeev via Tarantool-patches
2021-04-12 23:39   ` Vladislav Shpilevoy via Tarantool-patches
2021-04-13 22:58     ` Mergen Imeev via Tarantool-patches [this message]
2021-04-13 23:10       ` Mergen Imeev via Tarantool-patches
2021-04-09 20:26 ` [Tarantool-patches] [PATCH v5 40/52] sql: introduce mem_to_double() Mergen Imeev via Tarantool-patches
2021-04-13 23:21   ` Mergen Imeev via Tarantool-patches
2021-04-15  0:39 ` [Tarantool-patches] [PATCH v5 00/52] Move mem-related functions to mem.c/mem.h Vladislav Shpilevoy via Tarantool-patches
2021-04-15  6:49 ` Kirill Yukhin via Tarantool-patches

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