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diff --git a/tools/aapt2/Source.h b/tools/aapt2/Source.h
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+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef AAPT_SOURCE_H
+#define AAPT_SOURCE_H
+
+#include <ostream>
+#include <string>
+
+namespace aapt {
+
+struct SourceLineColumn;
+struct SourceLine;
+
+/**
+ * Represents a file on disk. Used for logging and
+ * showing errors.
+ */
+struct Source {
+    std::string path;
+
+    inline SourceLine line(size_t line) const;
+};
+
+/**
+ * Represents a file on disk and a line number in that file.
+ * Used for logging and showing errors.
+ */
+struct SourceLine {
+    std::string path;
+    size_t line;
+
+    inline SourceLineColumn column(size_t column) const;
+};
+
+/**
+ * Represents a file on disk and a line:column number in that file.
+ * Used for logging and showing errors.
+ */
+struct SourceLineColumn {
+    std::string path;
+    size_t line;
+    size_t column;
+};
+
+//
+// Implementations
+//
+
+SourceLine Source::line(size_t line) const {
+    return SourceLine{ path, line };
+}
+
+SourceLineColumn SourceLine::column(size_t column) const {
+    return SourceLineColumn{ path, line, column };
+}
+
+inline ::std::ostream& operator<<(::std::ostream& out, const Source& source) {
+    return out << source.path;
+}
+
+inline ::std::ostream& operator<<(::std::ostream& out, const SourceLine& source) {
+    return out << source.path << ":" << source.line;
+}
+
+inline ::std::ostream& operator<<(::std::ostream& out, const SourceLineColumn& source) {
+    return out << source.path << ":" << source.line << ":" << source.column;
+}
+
+} // namespace aapt
+
+#endif // AAPT_SOURCE_H