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Added (nested) FlexBuffer JSON parsing and output.

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FlexBuffer parser is just 40 lines of code (on top of existing parser!).

Change-Id: Idebebadafb661ca5333f5621139031f6df3c3e1a
Tested: on Linux.
This commit is contained in:
Wouter van Oortmerssen
2017-06-05 17:45:44 -07:00
parent dddd0865cb
commit 8f864aad7b
10 changed files with 332 additions and 192 deletions
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36
tests/test.cpp
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@@ -309,12 +309,11 @@ void AccessFlatBufferTest(const uint8_t *flatbuf, size_t length,
// Test flexbuffer if available:
auto flex = monster->flex();
if (flex) {
// flex is a vector of bytes you can memcpy. However, if you
// actually want to access the nested data, this is a convenient
// accessor that directly gives you the root value:
TEST_EQ(monster->flex_flexbuffer_root().AsInt16(), 1234);
}
// flex is a vector of bytes you can memcpy etc.
TEST_EQ(flex->size(), 4); // Encoded FlexBuffer bytes.
// However, if you actually want to access the nested data, this is a
// convenient accessor that directly gives you the root value:
TEST_EQ(monster->flex_flexbuffer_root().AsInt16(), 1234);
// Since Flatbuffers uses explicit mechanisms to override the default
// compiler alignment, double check that the compiler indeed obeys them:
@@ -919,7 +918,8 @@ void FuzzTest2() {
AddToSchemaAndInstances((" " + field_name + ":").c_str(),
deprecated ? "" : (field_name + ": ").c_str());
// Pick random type:
int base_type = lcg_rand() % (flatbuffers::BASE_TYPE_UNION + 1);
auto base_type = static_cast<flatbuffers::BaseType>(
lcg_rand() % (flatbuffers::BASE_TYPE_UNION + 1));
switch (base_type) {
case flatbuffers::BASE_TYPE_STRING:
if (is_struct) {
@@ -970,7 +970,9 @@ void FuzzTest2() {
// We want each instance to use its own random value.
for (int inst = 0; inst < instances_per_definition; inst++)
definitions[definition].instances[inst] +=
flatbuffers::NumToString(lcg_rand() % 128).c_str();
flatbuffers::IsFloat(base_type)
? flatbuffers::NumToString<double>(lcg_rand() % 128).c_str()
: flatbuffers::NumToString<int>(lcg_rand() % 128).c_str();
}
}
AddToSchemaAndInstances(
@@ -1548,7 +1550,7 @@ void FlexBuffersTest() {
TEST_EQ(vec[2].AsDouble(), 4.0);
TEST_EQ(vec[2].AsString().IsTheEmptyString(), true); // Wrong Type.
TEST_EQ_STR(vec[2].AsString().c_str(), ""); // This still works though.
TEST_EQ_STR(vec[2].ToString().c_str(), "4"); // Or have it converted.
TEST_EQ_STR(vec[2].ToString().c_str(), "4.0"); // Or have it converted.
auto tvec = map["bar"].AsTypedVector();
TEST_EQ(tvec.size(), 3);
TEST_EQ(tvec[2].AsInt8(), 3);
@@ -1570,6 +1572,22 @@ void FlexBuffersTest() {
TEST_EQ(vec[2].MutateFloat(2.0f), true);
TEST_EQ(vec[2].AsFloat(), 2.0f);
TEST_EQ(vec[2].MutateFloat(3.14159), false); // Double does not fit in float.
// Parse from JSON:
flatbuffers::Parser parser;
slb.Clear();
auto jsontest = "{ a: [ 123, 456.0 ], b: \"hello\" }";
TEST_EQ(parser.ParseFlexBuffer(jsontest, nullptr, &slb),
true);
auto jroot = flexbuffers::GetRoot(slb.GetBuffer());
auto jmap = jroot.AsMap();
auto jvec = jmap["a"].AsVector();
TEST_EQ(jvec[0].AsInt64(), 123);
TEST_EQ(jvec[1].AsDouble(), 456.0);
TEST_EQ_STR(jmap["b"].AsString().c_str(), "hello");
// And from FlexBuffer back to JSON:
auto jsonback = jroot.ToString();
TEST_EQ_STR(jsontest, jsonback.c_str());
}
int main(int /*argc*/, const char * /*argv*/[]) {