Add a Pair class, and pretty-wrap it into a NamespaceDescriptor class

octachoron · octachoron · commit 4d688830b29d · 2014-08-07T01:35:19.000+02:00
NamespaceDescriptor describes a gir namespace with its name and
version, which is essentially a pair of strings. The pair is
wrapped into a specific class for type safety and clarity.
diff --git a/src/gir2java/NamespaceDescriptor.java b/src/gir2java/NamespaceDescriptor.java
@@ -0,0 +1,25 @@
+package gir2java;
+
+public class NamespaceDescriptor extends Pair<String, String> {
+
+	public NamespaceDescriptor(String name, String version) {
+		super(name, version);
+	}
+
+	public String getName() {
+		return getA();
+	}
+	
+	public String getVersion() {
+		return getB();
+	}
+	
+	@Override
+	public String toString() {
+		StringBuilder sb = new StringBuilder();
+		sb.append(getName());
+		sb.append('-');
+		sb.append(getVersion());
+		return sb.toString();
+	}
+}
diff --git a/src/gir2java/Pair.java b/src/gir2java/Pair.java
@@ -0,0 +1,59 @@
+package gir2java;
+
+/**
+ * The usual Pair class. Immutable by default, but can be subclassed to make a mutable version.
+ * @author relek
+ *
+ * @param <TA>
+ * @param <TB>
+ */
+public class Pair<TA, TB> {
+	
+	protected TA a;
+	protected TB b;
+	
+	public Pair(TA a, TB b) {
+		this.a = a;
+		this.b = b;
+	}
+	
+	TA getA() {
+		return a;
+	}
+	
+	TB getB() {
+		return b;
+	}
+
+	@Override
+	public int hashCode() {
+		final int prime = 31;
+		int result = 1;
+		result = prime * result + ((a == null) ? 0 : a.hashCode());
+		result = prime * result + ((b == null) ? 0 : b.hashCode());
+		return result;
+	}
+
+	@Override
+	public boolean equals(Object obj) {
+		if (this == obj)
+			return true;
+		if (obj == null)
+			return false;
+		if (getClass() != obj.getClass())
+			return false;
+		Pair other = (Pair) obj;
+		if (a == null) {
+			if (other.a != null)
+				return false;
+		} else if (!a.equals(other.a))
+			return false;
+		if (b == null) {
+			if (other.b != null)
+				return false;
+		} else if (!b.equals(other.b))
+			return false;
+		return true;
+	}
+
+}
