libbinder: Add support for Value, Map, and IpPrefix types

Change-Id: I4cd06c7c65f69e6b787111573b29c4ff22f57981

1 files changed, 123 insertions, 0 deletions

diff --git a/libs/binder/Parcel.cpp b/libs/binder/Parcel.cpp
index a6ccb53852..da943051a6 100644
--- a/libs/binder/Parcel.cpp
+++ b/libs/binder/Parcel.cpp
@@ -37,6 +37,7 @@
 #include <binder/ProcessState.h>
 #include <binder/Status.h>
 #include <binder/TextOutput.h>
+#include <binder/Value.h>
 
 #include <cutils/ashmem.h>
 #include <utils/Debug.h>
@@ -1106,6 +1107,10 @@ status_t Parcel::writeParcelable(const Parcelable& parcelable) {
     return parcelable.writeToParcel(this);
 }
 
+status_t Parcel::writeValue(const binder::Value& value) {
+    return value.writeToParcel(this);
+}
+
 status_t Parcel::writeNativeHandle(const native_handle* handle)
 {
     if (!handle || handle->version != sizeof(native_handle))
@@ -1330,6 +1335,120 @@ status_t Parcel::writeNoException()
     return status.writeToParcel(this);
 }
 
+status_t Parcel::writeMap(const ::android::binder::Map& map_in)
+{
+    using ::std::map;
+    using ::android::binder::Value;
+    using ::android::binder::Map;
+
+    Map::const_iterator iter;
+    status_t ret;
+
+    ret = writeInt32(map_in.size());
+
+    if (ret != NO_ERROR) {
+        return ret;
+    }
+
+    for (iter = map_in.begin(); iter != map_in.end(); ++iter) {
+        ret = writeValue(Value(iter->first));
+        if (ret != NO_ERROR) {
+            return ret;
+        }
+
+        ret = writeValue(iter->second);
+        if (ret != NO_ERROR) {
+            return ret;
+        }
+    }
+
+    return ret;
+}
+
+status_t Parcel::writeNullableMap(const std::unique_ptr<binder::Map>& map)
+{
+    if (map == NULL) {
+        return writeInt32(-1);
+    }
+
+    return writeMap(*map.get());
+}
+
+status_t Parcel::readMap(::android::binder::Map* map_out)const
+{
+    using ::std::map;
+    using ::android::String16;
+    using ::android::String8;
+    using ::android::binder::Value;
+    using ::android::binder::Map;
+
+    status_t ret = NO_ERROR;
+    int32_t count;
+
+    ret = readInt32(&count);
+    if (ret != NO_ERROR) {
+        return ret;
+    }
+
+    if (count < 0) {
+        ALOGE("readMap: Unexpected count: %d", count);
+        return (count == -1)
+            ? UNEXPECTED_NULL
+            : BAD_VALUE;
+    }
+
+    map_out->clear();
+
+    while (count--) {
+        Map::key_type key;
+        Value value;
+
+        ret = readValue(&value);
+        if (ret != NO_ERROR) {
+            return ret;
+        }
+
+        if (!value.getString(&key)) {
+            ALOGE("readMap: Key type not a string (parcelType = %d)", value.parcelType());
+            return BAD_VALUE;
+        }
+
+        ret = readValue(&value);
+        if (ret != NO_ERROR) {
+            return ret;
+        }
+
+        (*map_out)[key] = value;
+    }
+
+    return ret;
+}
+
+status_t Parcel::readNullableMap(std::unique_ptr<binder::Map>* map) const
+{
+    const size_t start = dataPosition();
+    int32_t count;
+    status_t status = readInt32(&count);
+    map->reset();
+
+    if (status != OK || count == -1) {
+        return status;
+    }
+
+    setDataPosition(start);
+    map->reset(new binder::Map());
+
+    status = readMap(map->get());
+
+    if (status != OK) {
+        map->reset();
+    }
+
+    return status;
+}
+
+
+
 void Parcel::remove(size_t /*start*/, size_t /*amt*/)
 {
     LOG_ALWAYS_FATAL("Parcel::remove() not yet implemented!");
@@ -1950,6 +2069,10 @@ status_t Parcel::readParcelable(Parcelable* parcelable) const {
     return parcelable->readFromParcel(this);
 }
 
+status_t Parcel::readValue(binder::Value* value) const {
+    return value->readFromParcel(this);
+}
+
 int32_t Parcel::readExceptionCode() const
 {
     binder::Status status;