Add error checking to aapt for split generation

Change-Id: Ica627db6a671f6a6c35f98bfd9c03598ffe103ce
diff --git a/tools/aapt/Symbol.h b/tools/aapt/Symbol.h
new file mode 100644
index 0000000..e157541
--- /dev/null
+++ b/tools/aapt/Symbol.h
@@ -0,0 +1,95 @@
+/*
+ * Copyright (C) 2014 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_SYMBOL_H
+#define AAPT_SYMBOL_H
+
+#include <utils/String8.h>
+#include <utils/String16.h>
+
+#include "ConfigDescription.h"
+#include "SourcePos.h"
+
+/**
+ * A resource symbol, not attached to any configuration or context.
+ */
+struct Symbol {
+    inline Symbol();
+    inline Symbol(const android::String16& p, const android::String16& t, const android::String16& n, uint32_t i);
+    inline android::String8 toString() const;
+    inline bool operator<(const Symbol& rhs) const;
+
+    android::String16 package;
+    android::String16 type;
+    android::String16 name;
+    uint32_t id;
+
+};
+
+/**
+ * A specific defintion of a symbol, defined with a configuration and a definition site.
+ */
+struct SymbolDefinition {
+    inline SymbolDefinition();
+    inline SymbolDefinition(const Symbol& s, const ConfigDescription& c, const SourcePos& src);
+    inline bool operator<(const SymbolDefinition& rhs) const;
+
+    Symbol symbol;
+    ConfigDescription config;
+    SourcePos source;
+};
+
+//
+// Implementations
+//
+
+Symbol::Symbol() {
+}
+
+Symbol::Symbol(const android::String16& p, const android::String16& t, const android::String16& n, uint32_t i)
+    : package(p)
+    , type(t)
+    , name(n)
+    , id(i) {
+}
+
+android::String8 Symbol::toString() const {
+    return android::String8::format("%s:%s/%s (0x%08x)",
+            android::String8(package).string(),
+            android::String8(type).string(),
+            android::String8(name).string(),
+            (int) id);
+}
+
+bool Symbol::operator<(const Symbol& rhs) const {
+    return (package < rhs.package) || (type < rhs.type) || (name < rhs.name) || (id < rhs.id);
+}
+
+SymbolDefinition::SymbolDefinition() {
+}
+
+SymbolDefinition::SymbolDefinition(const Symbol& s, const ConfigDescription& c, const SourcePos& src)
+    : symbol(s)
+    , config(c)
+    , source(src) {
+}
+
+bool SymbolDefinition::operator<(const SymbolDefinition& rhs) const {
+    return (symbol < rhs.symbol) || (config < rhs.config) || (source < rhs.source);
+}
+
+#endif // AAPT_SYMBOL_H
+