[tarantool-patches] [PATCH v7 3/7] sql: introduce expr_len for sql_expr_compile
Kirill Shcherbatov
kshcherbatov at tarantool.org
Wed May 23 17:05:30 MSK 2018
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
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