Initial project import

tools/v/vlib/semver/compare.v

@@ -0,0 +1,41 @@
+module semver
+
+// * Private functions.
+@[inline]
+fn version_satisfies(ver Version, input string) bool {
+	range := parse_range(input) or { return false }
+	return range.satisfies(ver)
+}
+
+fn compare_eq(v1 Version, v2 Version) bool {
+	return v1.major == v2.major && v1.minor == v2.minor && v1.patch == v2.patch
+		&& v1.prerelease == v2.prerelease
+}
+
+fn compare_gt(v1 Version, v2 Version) bool {
+	return match true {
+		v1.major < v2.major { false }
+		v1.major > v2.major { true }
+		v1.minor < v2.minor { false }
+		v1.minor > v2.minor { true }
+		else { v1.patch > v2.patch }
+	}
+}
+
+fn compare_lt(v1 Version, v2 Version) bool {
+	return match true {
+		v1.major > v2.major { false }
+		v1.major < v2.major { true }
+		v1.minor > v2.minor { false }
+		v1.minor < v2.minor { true }
+		else { v1.patch < v2.patch }
+	}
+}
+
+fn compare_ge(v1 Version, v2 Version) bool {
+	return if compare_eq(v1, v2) { true } else { compare_gt(v1, v2) }
+}
+
+fn compare_le(v1 Version, v2 Version) bool {
+	return if compare_eq(v1, v2) { true } else { compare_lt(v1, v2) }
+}