1 files changed, 68 insertions, 0 deletions
diff --git a/javaparser-symbol-solver-core/src/main/java/com/github/javaparser/symbolsolver/resolution/typeinference/InstantiationSet.java b/javaparser-symbol-solver-core/src/main/java/com/github/javaparser/symbolsolver/resolution/typeinference/InstantiationSet.java
new file mode 100644
index 000000000..e0bfe3e88
--- /dev/null
+++ b/javaparser-symbol-solver-core/src/main/java/com/github/javaparser/symbolsolver/resolution/typeinference/InstantiationSet.java
@@ -0,0 +1,68 @@
+package com.github.javaparser.symbolsolver.resolution.typeinference;
+
+import com.github.javaparser.resolution.types.ResolvedType;
+
+import java.util.LinkedList;
+import java.util.List;
+
+/**
+ * @author Federico Tomassetti
+ */
+public class InstantiationSet {
+
+    private List<Instantiation> instantiations;
+
+    public boolean allInferenceVariablesAreResolved(BoundSet boundSet) {
+        throw new UnsupportedOperationException();
+    }
+
+    public static InstantiationSet empty() {
+        return EMPTY;
+    }
+
+    private static final InstantiationSet EMPTY = new InstantiationSet();
+
+    private InstantiationSet() {
+        instantiations = new LinkedList<>();
+    }
+
+    public InstantiationSet withInstantiation(Instantiation instantiation) {
+        InstantiationSet newInstance = new InstantiationSet();
+        newInstance.instantiations.addAll(this.instantiations);
+        newInstance.instantiations.add(instantiation);
+        return newInstance;
+    }
+
+    public boolean isEmpty() {
+        return instantiations.isEmpty();
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+
+        InstantiationSet that = (InstantiationSet) o;
+
+        return instantiations.equals(that.instantiations);
+    }
+
+    @Override
+    public int hashCode() {
+        return instantiations.hashCode();
+    }
+
+    @Override
+    public String toString() {
+        return "InstantiationSet{" +
+                "instantiations=" + instantiations +
+                '}';
+    }
+
+    public ResolvedType apply(ResolvedType type) {
+        for (Instantiation instantiation : instantiations) {
+            type = type.replaceTypeVariables(instantiation.getInferenceVariable().getTypeParameterDeclaration(), instantiation.getProperType());
+        }
+        return type;
+    }
+}