Add result objects

1 files changed, 44 insertions, 0 deletions

diff --git a/src/main/java/org/zwobble/mammoth/docx/ReadResult.java b/src/main/java/org/zwobble/mammoth/docx/ReadResult.java
new file mode 100644
index 0000000..f3eb7ce
--- /dev/null
+++ b/src/main/java/org/zwobble/mammoth/docx/ReadResult.java
@@ -0,0 +1,44 @@
+package org.zwobble.mammoth.docx;
+
+import com.google.common.collect.ImmutableList;
+import org.zwobble.mammoth.Result;
+import org.zwobble.mammoth.documents.DocumentElement;
+
+import java.util.List;
+import java.util.function.Function;
+
+import static org.zwobble.mammoth.util.MammothLists.list;
+
+public class ReadResult {
+    public static final ReadResult EMPTY_SUCCESS = success(list());
+
+    public static ReadResult concat(Iterable<ReadResult> results) {
+        ImmutableList.Builder<DocumentElement> elements = ImmutableList.builder();
+        for (ReadResult result : results) {
+            elements.addAll(result.elements);
+        }
+        return new ReadResult(elements.build());
+    }
+
+    public static ReadResult success(DocumentElement element) {
+        return success(list(element));
+    }
+
+    public static ReadResult success(List<DocumentElement> elements) {
+        return new ReadResult(elements);
+    }
+
+    private final List<DocumentElement> elements;
+
+    public ReadResult(List<DocumentElement> elements) {
+        this.elements = elements;
+    }
+
+    public ReadResult map(Function<List<DocumentElement>, DocumentElement> function) {
+        return new ReadResult(list(function.apply(elements)));
+    }
+
+    public Result<List<DocumentElement>> toResult() {
+        return new Result<>(elements);
+    }
+}