* Fix generate_code script path
* [Python] Make StartVector public
Make StartVector vector public since it is already being used in
generated code
* [Python] Improve vector creation for Python API
Makes Python API for vectors cleaner like Rust and Swift
---------
Co-authored-by: Derek Bailey <derekbailey@google.com>
* [Python] Sync PythonTest.sh flags with generate_code.py
* [Python] Update generated code to latest flatc version for tests
* [Python] Fix test support for numpy newer than 2.0.0
* [Python] Remove unused variable
* [Python] Fix __eq__ for numpy arrays
* [Python] Run clang-format over the entire file
Comparing short strings, small integers, and Booleans by identity
(memory address) can work due to optimizations in the Python
interpreter, but it is neither formally correct nor reliable. Use
equality comparisons instead.
Co-authored-by: Derek Bailey <derekbailey@google.com>
It is deprecated in favour of importlib and slated for removal in Python
3.12. Since the return value of imp.find_module('numpy') is unused, the
only effect of calling this function is to raise an ImportError when
numpy is not available; importing numpy directly is already sufficient
to do this.
The imp package is still used in python/flatbuffers/compat.py, but only
on Python 2, where it is not deprecated and will not be removed.
Co-authored-by: Derek Bailey <derekbailey@google.com>
* feat: Fixed the issue with nested unions relying on InitFromBuf.
Problem: Issue #7569
Nested Unions were broken with the introduction of parsing buffers with an initial encoding offset.
Fix:
Revert the InitFromBuf method to the previous version and introduction of InitFromPackedBuf that allows
users to read types from packed buffers applying the offset automatically.
Test:
Added in TestNestedUnionTables to test the encoding and decoding ability using a nested table with a
union field.
* fix: Uncommented generate code command
* 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>
* Enable --gen-onefile in Python
Made it possible to generate all python code in one file. Modified
py_test.py so that it can switch between the multi-file code and
the one-file code.
Updated PythonTest.sh and py_test.py so that the multi-file code
and the one-file code can be tested based on the same test code.
* Sync with google/flatbuffers
* Add --gen-onefile to generate_code.py
* Remove a lot of redundancy from the Python generated code.
Update tutorial to reflect new Python generated code.
* Add aliases for newly deprecated Python generated methods.
This should help with backwards compatibility.
* Fix incorrect names in deprecated comments.
* 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.
* Flatbuffers Python Object API
Implement the logic to generate the Python object API that can
unpack the data from a buf class into an object class, and pack
the data of an object class to a buf class.
* Fix the build issues
Remove unused parameters and replace auto in the for-loop statement
with std::string to make it compatible with VS2010.
* Fix the build issues.
* Add support for Array type
Added logic to handle Array type in Python Object API. Updated the
generated code accordingly.
* Fix the old style casting from int to char
* Fixed another conversion from int to char
* Fixed the import for typing
Importing typing may cause errors when a machine do not have the
moduel typing installed. This PR fixes the issue by guarding
"import typing" with the "try/except" statement.
* Fix issue of iterating the vector of import list
* Update the generated examples using generate_code.sh
* Fix the import order for typing
The import list was stored in unordered_set, so that each generated
codes may have different import order. Therefore, it failed in the
consistency test where two generated copies need to have exactly the
same apperance.
* Optimize unpack using numpy
Use numpy to unpack vector whenever it is possible to improve unpack
performance.
Also, added codegen command for Python specificly in generate_code.sh,
because --no-includes cannot be turn on for Python.
* Fix the import order
* Update generate_code.bat for windows accordingly
* Replace error message with pass
Avoid printing error message for every Python2 users about typing.
Replace it with pass.
* 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
* Extend the test of MonsterExtra
- Extend C++ test of MonsterExtra
- Add conversion of fbs/json NaNs to unsigned quiet-NaN
- Update documentation (cross-platform interoperability)
* Fix declaration of infinity constants int the test
* 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
* Fix issue #4389, if field is ommitted the return type is the same for python generator
* Fix issue #4389, bytes is returned when field is omitted
* Fix issue #4389, added generated python code after generator modification
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
Test was testing for a field to be None, even though it is populated
in one particular instance.
Change-Id: Id19848d01498d4c0a684efdb2bf49ff12c5b6758
Tested: on Linux.
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.
+ 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.
Implement code generation and self-contained runtime library for Python.
The test suite verifies:
- Correctness of generated Python code by comparing output to that of
the other language ports.
- The exact bytes in the Builder buffer during many scenarios.
- Vtable deduplication correctness.
- Edge cases for table construction, via a fuzzer derived from the Go
implementation.
- All code is simultaneously valid in Python 2.6, 2.7, and 3.4.
The test suite includes benchmarks for:
- Building 'gold' data.
- Parsing 'gold' data.
- Deduplicating vtables.
All tests pass on this author's system for the following Python
implementations:
- CPython 2.6.7
- CPython 2.7.8
- CPython 3.4.2
- PyPy 2.5.0 (CPython 2.7.8 compatible)
