Add filter generation helper: filter by version constraint

Signed-off-by: Matthias Beyer <mail@beyermatthias.de>

1 files changed, 8 insertions, 0 deletions

diff --git a/src/util/filters.rs b/src/util/filters.rs
index 143aaa9..613a600 100644
--- a/src/util/filters.rs
+++ b/src/util/filters.rs
@@ -5,6 +5,7 @@ use resiter::Map;
 
 use crate::package::Package;
 use crate::package::PackageName;
+use crate::package::PackageVersionConstraint;
 use crate::package::ParseDependency;
 
 /// Helper function to build a package filter based on some flags and the package version
@@ -100,6 +101,13 @@ pub fn build_package_filter_by_name(name: PackageName) -> impl filters::filter::
 }
 
 
+pub fn build_package_filter_by_version_constraint(constraint: PackageVersionConstraint) -> impl filters::filter::Filter<Package> {
+    move |p: &Package| {
+        trace!("Checking {:?} -> version matches {:?}", p, constraint);
+        constraint.matches(p.version())
+    }
+}
+
 #[cfg(test)]
 mod tests {
     use super::*;