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- Moved registration mechanism from BaseFunction into ASTNode / Statement / Expression
- Added more details about statements/expressions to the output trace (including if's)
- Fixed wrong locations
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MOS_MIGRATED_REVID=102841164
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Make Environment-s freezable: Introduce a class Mutability
as a revokable capability to mutate objects in an Environment.
For now, only Environment-s carry this capability.
Make sure that every Mutability is revoked in the same function that create...
This reinstates a change that previously rolled-back because it broke the
serializability of SkylarkLookupValue. Bad news: serializing it succeeds for the
wrong reason, because a SkylarkEnvironment was stored as a result (now an
Environment.Extension) that was Serializable but inherited its bindings from an Environment (now an Environment.BaseExtension) which wasn't Serializable.
Apparently, Java doesn't try to serialize the bindings then (or at least doesn't
error out when it fails), because these bindings map variable names to pretty
arbitrary objects, and a lot of those we find in practice aren't Serializable.
Thus the current code passes the same tests as the previous code, but obviously
the serialization is just as ineffective as it used to be.
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MOS_MIGRATED_REVID=102776694
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*** Reason for rollback ***
Breaks serialization of SkyValues.
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MOS_MIGRATED_REVID=102457225
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Make Environment-s freezable: Introduce a class Mutability
as a revokable capability to mutate objects in an Environment.
For now, only Environment-s carry this capability.
Make sure that every Mutability is revoked in the same function that creates it,
so no Environment is left open for modification after being created and exported;
exceptions for tests, the shell and initialization contexts.
Unify Environment, SkylarkEnvironment and EvaluationContext into Environment.
Have a notion of Frame for the bindings + parent + mutability.
Replace the updateAndPropagate mechanism by a dynamicFrame.
Simplify ValidationEnvironment, that is now always deduced from the Environment.
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MOS_MIGRATED_REVID=102363438
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MOS_MIGRATED_REVID=102330569
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methods.
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MOS_MIGRATED_REVID=98922811
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MOS_MIGRATED_REVID=93515487
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MOS_MIGRATED_REVID=91216722
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MOS_MIGRATED_REVID=91175430
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There are still some static checks (check existence of variable/function,
readonly variables, etc.). More cleanup will come later.
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MOS_MIGRATED_REVID=90979748
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* New hierarchy BaseFunction > UserModeFunction, BuiltinFunction.
The old hierarchy still exists for now, to be deleted after migration:
Function > AbstractFunction > MixedModeFunction >
(UserModeFunction, SkylarkFunction > SimpleSkylarkFunction)
(UserModeFunction is already migrated, and
BaseFunction implements Function, for now.)
* Function supports *args and **kwargs when calling functions, and
mandatory named-only parameters in the style of Python 3.
Notable difference with Python: *args binds the variable to a tuple,
because a Skylark list would have to be monomorphic.
* A better, simpler, safer FFI using reflection with BuiltinFunction.
Handles typechecking, passes parameters in a more Java style.
(Not used for now, will be used later.)
* A new annotation @SkylarkSignature, intended to replace @SkylarkBuiltin,
supports the full function call protocol, including default arguments.
* Support for annotating function Factory-s rather than functions.
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MOS_MIGRATED_REVID=88958581
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MOS_MIGRATED_REVID=87821306
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This is the first meaty cl in a series to refactor the Skylark function call protocol.
1- We introduce a first-class notion of FunctionSignature, that supports positional and named-only arguments, mandatory and optional, default values, type-checking, *stararg and **kwarg;
2- To keep things clean, we distinguish two different kinds of Argument's: Argument.Passed that appears in function calls, and Parameter, that appears in function definitions.
3- We refactor the Parser so it uses this infrastructure, and make minimal changes to MixedModeFunction so that it works with it (but don't actually implement *starparam and **kwparam yet).
4- As we modify FuncallExpression, we ensure that the args and kwargs arguments it passes to the underlying function are immutable, as a prerequisite to upcoming implementation of *starparam and **kwparam as being provided directly from a skylark list or dict.
Further changes under review will take advantage of this FunctionSignature to redo all our function call protocol, to be used uniformly for both UserDefinedFunction's and builtin function. The result will be a simpler inheritance model, with better type-checking, builtin functions that are both simpler and better documented, and many redundant competing functionality-limited codepaths being merged and replaced by something better.
NB: The changes to MixedModeFunction, SkylarkFunction and MethodLibrary are temporary hacks to be done away with in an upcoming CL. The rest is the actual changes.
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MOS_MIGRATED_REVID=86704072
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MOE_MIGRATED_REVID=85702957
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Florian Weikert
Francois-Rene Rideau
Janak Ramakrishnan
Laurent Le Brun
Ulf Adams
Han-Wen Nienhuys