Merge pull request #777 from Liyw979/feat_getmethod

New API: get method by name

sootup.core/src/main/java/sootup/core/model/AbstractClass.java

@@ -25,6 +25,7 @@
 import com.google.common.collect.Iterables;
 import java.util.Optional;
 import java.util.Set;
+import java.util.stream.Collectors;
 import javax.annotation.Nonnull;
 import sootup.core.frontend.AbstractClassSource;
 import sootup.core.frontend.ResolveException;
@@ -122,4 +123,18 @@ public Optional<? extends SootMethod> getMethod(
                   getClassSource().getSourcePath());
             });
   }
+
+  /**
+   * Attempts to retrieve the method with the given name. This method will return an empty Set if
+   * there is no method with the given name.
+   *
+   * @param name the name of the method
+   * @return a set of methods that have the given name
+   */
+  @Nonnull
+  public Set<? extends SootMethod> getMethodsByName(@Nonnull String name) {
+    return this.getMethods().stream()
+        .filter(m -> m.getSignature().getName().equals(name))
+        .collect(Collectors.toSet());
+  }
 }

sootup.java.core/src/main/java/sootup/java/core/JavaSootClass.java

@@ -124,6 +124,12 @@ public Optional<JavaSootMethod> getMethod(
     return (Optional<JavaSootMethod>) super.getMethod(name, parameterTypes);
   }
 
+  @Nonnull
+  @Override
+  public Set<JavaSootMethod> getMethodsByName(@Nonnull String name) {
+    return (Set<JavaSootMethod>) super.getMethodsByName(name);
+  }
+
   @Nonnull
   @Override
   public Optional<JavaSootMethod> getMethod(@Nonnull MethodSubSignature subSignature) {