mirror of
https://github.com/m-labs/artiq.git
synced 2024-12-25 03:08:27 +08:00
parent
42609d057e
commit
f4e6b18690
@ -1,2 +1,3 @@
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from .constness import Constness
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from .domination import DominatorTree
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from .devirtualization import Devirtualization
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30
artiq/compiler/analyses/constness.py
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30
artiq/compiler/analyses/constness.py
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@ -0,0 +1,30 @@
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"""
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:class:`Constness` checks that no attribute marked
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as constant is ever set.
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"""
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from pythonparser import algorithm, diagnostic
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from .. import types
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class Constness(algorithm.Visitor):
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def __init__(self, engine):
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self.engine = engine
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self.in_assign = False
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def visit_Assign(self, node):
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self.visit(node.value)
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self.in_assign = True
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self.visit(node.targets)
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self.in_assign = False
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def visit_AttributeT(self, node):
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self.generic_visit(node)
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if self.in_assign:
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typ = node.value.type.find()
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if types.is_instance(typ) and node.attr in typ.constant_attributes:
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diag = diagnostic.Diagnostic("error",
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"cannot assign to constant attribute '{attr}' of class '{class}'",
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{"attr": node.attr, "class": typ.name},
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node.loc)
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self.engine.process(diag)
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return
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@ -137,6 +137,9 @@ class ASTSynthesizer:
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instance_type = types.TInstance("{}.{}".format(typ.__module__, typ.__qualname__),
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OrderedDict())
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instance_type.attributes['__objectid__'] = builtins.TInt32()
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if hasattr(typ, 'kernel_constant_attributes'):
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assert isinstance(typ.kernel_constant_attributes, set)
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instance_type.constant_attributes = typ.kernel_constant_attributes
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constructor_type = types.TConstructor(instance_type)
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constructor_type.attributes['__objectid__'] = builtins.TInt32()
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@ -56,6 +56,7 @@ class Module:
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escape_validator = validators.EscapeValidator(engine=self.engine)
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iodelay_estimator = transforms.IODelayEstimator(engine=self.engine,
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ref_period=ref_period)
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constness = analyses.Constness(engine=self.engine)
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artiq_ir_generator = transforms.ARTIQIRGenerator(engine=self.engine,
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module_name=src.name,
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ref_period=ref_period)
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@ -71,6 +72,7 @@ class Module:
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monomorphism_validator.visit(src.typedtree)
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escape_validator.visit(src.typedtree)
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iodelay_estimator.visit_fixpoint(src.typedtree)
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constness.visit(src.typedtree)
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devirtualization.visit(src.typedtree)
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self.artiq_ir = artiq_ir_generator.visit(src.typedtree)
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artiq_ir_generator.annotate_calls(devirtualization)
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@ -443,6 +443,7 @@ class TInstance(TMono):
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assert isinstance(attributes, OrderedDict)
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super().__init__(name)
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self.attributes = attributes
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self.constant_attributes = set()
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def __repr__(self):
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return "artiq.compiler.types.TInstance({}, {})".format(
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18
artiq/test/lit/embedding/error_attr_constant.py
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18
artiq/test/lit/embedding/error_attr_constant.py
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# RUN: %python -m artiq.compiler.testbench.embedding +diag %s >%t
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# RUN: OutputCheck %s --file-to-check=%t
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from artiq.language.core import *
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from artiq.language.types import *
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class c:
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kernel_constant_attributes = {'a'}
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def __init__(self):
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self.a = 1
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i = c()
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@kernel
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def entrypoint():
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# CHECK-L: ${LINE:+1}: error: cannot assign to constant attribute 'a' of class 'testbench.c'
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i.a = 1
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