1 files changed, 89 insertions, 0 deletions
diff --git a/lib/entry/libimagentryfilter/src/builtin/header/field_istype.rs b/lib/entry/libimagentryfilter/src/builtin/header/field_istype.rs
new file mode 100644
index 00000000..889c8321
--- /dev/null
+++ b/lib/entry/libimagentryfilter/src/builtin/header/field_istype.rs
@@ -0,0 +1,89 @@
+//
+// imag - the personal information management suite for the commandline
+// Copyright (C) 2015, 2016 Matthias Beyer <mail@beyermatthias.de> and contributors
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; version
+// 2.1 of the License.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public
+// License along with this library; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+//
+
+use libimagstore::store::Entry;
+
+use builtin::header::field_path::FieldPath;
+use builtin::header::field_predicate::FieldPredicate;
+use builtin::header::field_predicate::Predicate;
+use filters::filter::Filter;
+
+use toml::Value;
+
+pub enum Type {
+    Array,
+    Boolean,
+    Float,
+    Integer,
+    None,
+    String,
+    Table,
+}
+
+impl Type {
+
+    fn matches(&self, v: &Value) -> bool {
+        match (self, v) {
+            (&Type::String,  &Value::String(_))  |
+            (&Type::Integer, &Value::Integer(_)) |
+            (&Type::Float,   &Value::Float(_))   |
+            (&Type::Boolean, &Value::Boolean(_)) |
+            (&Type::Array,   &Value::Array(_))   |
+            (&Type::Table,   &Value::Table(_))   => true,
+            _                                    => false,
+        }
+    }
+
+}
+
+struct IsTypePred {
+    ty: Type
+}
+
+impl Predicate for IsTypePred {
+
+    fn evaluate(&self, v: Value) -> bool {
+        self.ty.matches(&v)
+    }
+
+}
+
+pub struct FieldIsType {
+    filter: FieldPredicate<IsTypePred>,
+}
+
+impl FieldIsType {
+
+    pub fn new(path: FieldPath, expected_type: Type) -> FieldIsType {
+        FieldIsType {
+            filter: FieldPredicate::new(path, Box::new(IsTypePred { ty: expected_type })),
+        }
+    }
+
+}
+
+impl Filter<Entry> for FieldIsType {
+
+    fn filter(&self, e: &Entry) -> bool {
+        self.filter.filter(e)
+    }
+
+}
+
+