* optionally generate type prefixes and suffixes for python code
* fix codegen error when qualified name is empty
* WIP: Python typing
* more progress towards python typing
* Further iterate on Python generated code typing
* clang-format
* Regenerate code
* add documentation for Python type annotations option
* generate code with Python type annotations
* handle forward references
* clang-format
* Add Ref.AsStringBytes to flatbuffers.flexbuffers Python API
* Append Bytes to AsStringBytes return value
Co-authored-by: Jared Junyoung Lim <jaredlim@google.com>
* Add support for metadata attributes for enum values (#7567)
* Fix path lookup in flatc test
* Try a fix for Windows paths
* Convert path to string to fix Windows error
* feat: Added support for fixed sized arrays to python
Problem:
We encountered that using fixed arrays from C++ to python that python would
not read those arrays correctly due to no size information being encoded in the byte
array itself.
Fix:
Encode the sizes within the generated python file during code generation.
Specfically we add GetArrayAsNumpy to the python version of table, which takes as input
the length of the vector. When generating the python message files we include this length
from the VectorType().fixed_length.
* fix: added digit support for camel case to snake case conversion
Problem:
When including a number in the message name we would encounter cases where SnakeCase would
not add the appropirate breaks. e.g. Int32Stamped -> int_32stamped rather than int_32_stamped.
Fix:
To fix this we can add the condition that we check if the current character is not lower and
not a digit, that we check if the previous character was a lower or digit. If it was a lower
or digit then we add the break.
* fix: Array support for structures
Problem:
The python generated code for handling non-struct and struct vectors
and arrays was inconsistent. The calls to populate the obj api was
creating incorrect code.
Solution:
To fix this the VectorOfStruct and VectorOfNonStruct was rewritten
to handle array cases and bring the two methods in line which each
other.
Testing:
PythonTesting.sh now correctly runs and generates the code for
array_test.fbs.
Minor modifications were done on the test to use the new index
accessor for struct arrays and the script correctly sources the
location of the python code.
* chore: clang format changes
* Added code generated by scripts/generate_code. Modified GetArrayOfNonStruct slightly
to allow for function overloading allowing the user to get a single element of an array
or the whole array.
* Added new_line parameter to OffsetPrefix to allow optional new lines to be added.
This allows us to use the GenIndents method that automatically adds new lines instead.
* Reupload of generated code from the scripts/generate_code.py
* Removed new line in GetVectorAsNumpy.
* Updated Array lengths to use Length methods where possible. Added fallthrough for GenTypePointer. Added digit check to CamelToSnake method. Added and modified tests for ToSnakeCase and CamelToSnake.
* Added range check on the getter methods for vector and array types. Renamed == as is for python
* Implement optional scalars for Python
* Use == for integer comparison, remove empty line
* Fix optional type hint
Co-authored-by: Caleb Zulawski <caleb.zulawski@caci.com>
We already have the reflection.fbs file and the flatbuffers
python language support.
Adding this feature would give the python developers the
ability to parse the flatbuffers schema and write some tools.
Co-authored-by: Derek Bailey <derekbailey@google.com>
* Add vectorNumElements attribute to Builder for simpler vector creation.
This adds a default to EndVector which should simplify its use.
* Update tutorial to reflect new default arg in Python EndVector.
* Remove optional argument to Python EndVector.
* Add generated files.
* Unset Builder.vectorNumElems when not in use.
* Add forceDefaults opt to python Builder
* Add test functions for force_default option for python builder
* Simplify
* Add force default test for UOffsetTFlags
* Python: Added support for file_identifiers
* Added tests. Fixed file_identifier code.
* Python: Fixed excessive padding of file_identifier. Repaired tests.
* Python: Made code compatible with python2.7
* Python: Typo fix in @endcond
* whitespace normaalization
* Stylistic change from if(not X is None) to if(X is not None). Added comment to type string.
* Python: Added support for automatic code generation of file_identifiers. Added tests for said code generation.
* converted sprintf to snprintf
* Bugfix, added snprint deffinition for MSVC
* changed snprint deffinition for MSVC to sprint_s
* changed scanf to IntToStringHex. Renamed HasFileIdentifier to GenHasFileIdentifier.
* Added updated genereated code to commit
* Python bugix: flatc no longer produces HasFileIdentfier for shcemas with no file identifier
* Added tests to verify `MonsterBufferHasIdentifier` returns false on no Identifier
* Python: added tests for GetBufferIdentifier and BufferHasIdentifier
Python: removed unessasary parenethesis in if statements
Minor format changes.
* Python : correceted instances of keyword arguments being called as positional arguments
* fixed typos and grammer in comments
* Minor style fixes
* Indentation fix
* Equals style changes
* Python: Fixed Alignment Issues. Changed test code to test against atual output
* Ran make(forgot to run make last commit)
* Python: Style changes
* Style changes
* indentation and style
* readded CONTRIBUTING.md
* Formatting tweak
Mostly to make CI run again
* More formatting fixes
* More formatting fixes
* More formatting fixes
* More formatting fixes
* Formatting fix
* More formatting fixes
* Formatting
* ran generate_code.sh
* Use a hash table to index existing vtables
This allows for quick deduplication even in situations where there
might be thousands of vtables due to 'combinatoric explosion'.
This fixes issue #5301.
* Refactor 0-offset trimming
* Improve deduplication benchmark
The routine now generates a set of realistic logical layouts and
uses a timer function that randomly picks a layout for each iteration.
The benchmark runs in batches of # of logical layouts = 1, 10, 100, 1000.
(Note that due to alignment, the actual number of vtables is usually slightly
higher.)
* initial changes to support size prefixed buffers in Java
* add slice equivalent to CSharp ByteBuffer
* resolve TODO for slicing in CSharp code generation
* add newly generated Java and CSharp test sources
* fix typo in comment
* add FinishSizePrefixed methods to CSharp FlatBufferBuilder as well
* add option to allow writing the prefix as well
* generate size-prefixed monster binary as well
* extend JavaTest to test the size prefixed binary as well
* use constants for size prefix length
* fuse common code for getRootAs and getSizePrefixedRootAs
* pulled file identifier out of if
* add FinishSizePrefixed, GetSizePrefixedRootAs support for Python
* Revert "extend JavaTest to test the size prefixed binary as well"
This reverts commit 68be4420dd.
* Revert "generate size-prefixed monster binary as well"
This reverts commit 2939516fdf.
* fix ByteBuffer.cs Slice() method; add proper CSharp and Java tests
* fix unused parameter
* increment version number
* pulled out generated methods into separate utility class
* pulled out generated methods into separate utility class for Python
* fix indentation
* remove unnecessary comment
* fix newline and copyright
* add ByteBufferUtil to csproj compilation
* hide ByteBuffer's internal data; track offset into parent's array
* test unsafe versions as well; compile and run in debug mode
* clarify help text for size prefix
* move ByteBuffer slicing behavior to subclass
* fix protection levels
* add size prefix support for text generation
* add ByteBufferSlice to csproj compilation
* revert size prefix handling for nested buffers
* use duplicate instead of slice for removing size prefix
* remove slice subclass and use duplicate for removing size prefix
* remove slice specific tests
* remove superfluous command line option
This is something the format supports, but none of the builders
were doing. Can save 10-20% on FlatBuffer binary size!
Also fixed the Go tests.
Change-Id: I616c56ce9bbcfcaee23aa24f0532fcb60b6a8c75
Tested: on Linux.
* Add numpy accessor to python flatbuffers scalar vectors
* Update python tests to test numpy vector accessor
* Update appveyor CI to run Python tests, save generated code as artifact
* Update example generated python code
* Add numpy info to python usage docs
* Update test schema and python tests w/ multi-byte vector
* did not mean to push profiling code
* adding float64 numpy tests
There was no way to pass an already-encoded string to
`builder.CreateString` in Python 2.7:
- Passing a `bytearray` raised a TypeError because `bytearray` was not
recognized as an instance of `compat.binary_type`.
- Passing a utf-8 encoded `str` would cause the string to be
double-encoded, because `compat.string_types = (basestring,)` and
`basestring` is the base class of `str` and `unicode`, so the logic
would never reach the `elif isinstance(s, compat.binary_type)` case.
- Converting a utf-8 encoded bytearray to `bytes` like
`builder.CreateString(bytes(encoded_string))` does not work because
in Python 2.7, bytes is just an alias for `str` so it behaves as
above.
This change allows either `bytes` or `bytearray` as an already-encoded
string to be passed to `CreateString` in versions of Python that support
`bytearray`, and falls back to `str` in older versions.
In Python 2, it restricts unencoded string types to `unicode`, so `str`
can be used as an encoded, binary representaiton.
Adding an API reference for the supported languages.
General docs cleanup, including a new `tutorial` section that
supports all of the supported languages.
Added samples for each supported language to mirror the new
tutorial page.
Cleaned up all the links by making them `@ref` style links,
instead of referencing the names of the generated `.html` files.
Removed all generated files that were unnecessarily committed.
Also fixed the C# tests (two were failing due to a missing file).
Bug: b/25801305
Tested: Tested all samples on Ubuntu, Mac, and Android. Docs were
generated using doxygen and viewed on Chrome.
Change-Id: I2acaba6e332a15ae2deff5f26a4a25da7bd2c954
When passing a unicode string to builder.CreateString, the
default encoding assumed all characters can be encoded
using ascii. Added a fix so a user can specify the
encoding and how to handle errors when creating strings.
Fix for Issue 1741
Minor bug where python versions 2.7.x where x < 5 do not support
unpacking from memoryview objects. Versions 2.7.5 and above will
use memoryview while 2.7 versions below 2.7.5 will use buffer
objects.
Manual testing was performed on versions 2.7.5 and 2.7.2 to
confirm both worked correctly.
+ Add state to the Builder object to track if we are inside a table,
and if we are finished building the buffer.
+ Use this data to check that a buffer is being built correctly.
+ Raise an exception if a buffer is not being built correctly.
+ Test that the exceptions happen as expected.
Based on d236dea.
