[tarantool-patches] [PATCH v7 3/7] sql: introduce expr_len for sql_expr_compile

[Kirill Shcherbatov <kshcherbatov@tarantool.org>]

As we need to use parser in the cases with not null-terminated
strings expr_len argument for sql_expr_compile is required.

Part of #3272.
---
 src/box/alter.cc       | 1 +
 src/box/sql.h          | 4 +++-
 src/box/sql/tokenize.c | 7 ++++---
 3 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/src/box/alter.cc b/src/box/alter.cc
index e87bbce..e4780da 100644
--- a/src/box/alter.cc
+++ b/src/box/alter.cc
@@ -408,6 +408,7 @@ field_def_decode(struct field_def *field, const char **data,
 
 	if (field->default_value != NULL &&
 	    sql_expr_compile(sql_get(), field->default_value,
+			     strlen(field->default_value),
 			     &field->default_value_expr) != 0)
 		diag_raise();
 }
diff --git a/src/box/sql.h b/src/box/sql.h
index ff8ab6f..a7f2500 100644
--- a/src/box/sql.h
+++ b/src/box/sql.h
@@ -74,12 +74,14 @@ struct Table;
  * stuct Select and return it.
  * @param db SQL context handle.
  * @param expr Expression to parse.
+ * @param expr_len Expression to parse length.
  * @param[out] result Result: AST structure.
  *
  * @retval Error code if any.
  */
 int
-sql_expr_compile(struct sqlite3 *db, const char *expr, struct Expr **result);
+sql_expr_compile(struct sqlite3 *db, const char *expr, int expr_len,
+	struct Expr **result);
 
 /**
  * Store duplicate of a parsed expression into @a parser.
diff --git a/src/box/sql/tokenize.c b/src/box/sql/tokenize.c
index 9146e95..04e9801 100644
--- a/src/box/sql/tokenize.c
+++ b/src/box/sql/tokenize.c
@@ -649,16 +649,17 @@ sqlite3RunParser(Parse * pParse, const char *zSql, char **pzErrMsg)
 }
 
 int
-sql_expr_compile(sqlite3 *db, const char *expr, struct Expr **result)
+sql_expr_compile(sqlite3 *db, const char *expr, int expr_len,
+		 struct Expr **result)
 {
 	const char *outer = "SELECT ";
-	int len = strlen(outer) + strlen(expr);
+	int len = strlen(outer) + expr_len;
 	char *stmt = (char *) region_alloc(&fiber()->gc, len + 1);
 	if (stmt == NULL) {
 		diag_set(OutOfMemory, len + 1, "region_alloc", "stmt");
 		return -1;
 	}
-	sprintf(stmt, "%s%s", outer, expr);
+	sprintf(stmt, "%s%.*s", outer, expr_len, expr);
 
 	struct Parse parser;
 	sql_parser_create(&parser, db);
-- 
2.7.4