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From: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>
To: linux-sparse@vger.kernel.org
Cc: Ben Dooks <ben.dooks@codethink.co.uk>,
	Luc Van Oostenryck <luc.vanoostenryck@gmail.com>
Subject: [PATCH 03/13] format-check: add helper type_class()
Date: Wed, 14 Oct 2020 01:22:21 +0200
Message-ID: <20201013232231.10349-4-luc.vanoostenryck@gmail.com> (raw)
In-Reply-To: <20201013232231.10349-1-luc.vanoostenryck@gmail.com>

This will help the next patch to verify the types.

Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>
---
 verify-format.c | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/verify-format.c b/verify-format.c
index ae5bb2e6e985..fd5a9ed821e1 100644
--- a/verify-format.c
+++ b/verify-format.c
@@ -70,6 +70,35 @@ struct format_state {
 	unsigned int		used_position: 1;
 };
 
+enum {
+	CLASS_OTHER,
+	CLASS_INT,
+	CLASS_BITWISE,
+	CLASS_FLOAT,
+	CLASS_PTR,
+};
+
+static inline int type_class(struct symbol *type, struct symbol **base)
+{
+	if (type->type == SYM_NODE)
+		type = type->ctype.base_type;
+	if (type->type == SYM_ENUM)
+		type = type->ctype.base_type;
+	*base = type;
+	if (type->type == SYM_BASETYPE) {
+		struct symbol *kind = type->ctype.base_type;
+		if (kind == &int_type)
+			return CLASS_INT;
+		if (kind == &fp_type)
+			return CLASS_FLOAT;
+	}
+	if (type->type == SYM_PTR)
+		return CLASS_PTR;
+	if (type->type == SYM_RESTRICT)
+		return CLASS_BITWISE;
+	return CLASS_OTHER;
+}
+
 static int printf_fmt_numtype(struct format_type *fmt,
 			      struct expression **expr,
 			      struct symbol *ctype,
-- 
2.28.0


  parent reply index

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-13 23:22 [PATCH 00/13] format-check: add specific type checking Luc Van Oostenryck
2020-10-13 23:22 ` [PATCH 01/13] format-check: void * is not OK for strings, fix the test Luc Van Oostenryck
2020-10-13 23:22 ` [PATCH 02/13] format-check: more complete parsing of the length & type modifiers Luc Van Oostenryck
2020-10-13 23:22 ` Luc Van Oostenryck [this message]
2020-10-13 23:22 ` [PATCH 04/13] format-check: merge 'fmt_string' & 'string' Luc Van Oostenryck
2020-10-13 23:22 ` [PATCH 05/13] format-check: remove unneeded member: target Luc Van Oostenryck
2020-10-13 23:22 ` [PATCH 06/13] format-check: add a function to check to type of strings Luc Van Oostenryck
2020-10-13 23:22 ` [PATCH 07/13] format-check: add a function to check to type of 'n' arguments Luc Van Oostenryck
2020-10-13 23:22 ` [PATCH 08/13] format-check: add a function to check to type of pointers Luc Van Oostenryck
2020-10-13 23:22 ` [PATCH 09/13] format-check: remove printf_fmt_print_pointer() Luc Van Oostenryck
2020-10-13 23:22 ` [PATCH 10/13] format-check: add a function to check the type of floats Luc Van Oostenryck
2020-10-13 23:22 ` [PATCH 11/13] format-check: add a function to check the type of integers Luc Van Oostenryck
2020-10-13 23:22 ` [PATCH 12/13] format-check: remove wrappers around type checking methods Luc Van Oostenryck
2020-10-13 23:22 ` [PATCH 13/13] format-check: simplify calling of parse_printf_get_fmt() Luc Van Oostenryck

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