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# ==================================================================================================================== #
# Authors: #
# Patrick Lehmann #
# #
# License: #
# ==================================================================================================================== #
# Copyright 2017-2023 Patrick Lehmann - Boetzingen, Germany #
# Copyright 2016-2017 Patrick Lehmann - Dresden, Germany #
# #
# Licensed under the Apache License, Version 2.0 (the "License"); #
# you may not use this file except in compliance with the License. #
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# http://www.apache.org/licenses/LICENSE-2.0 #
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# distributed under the License is distributed on an "AS IS" BASIS, #
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. #
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# limitations under the License. #
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# SPDX-License-Identifier: Apache-2.0 #
# ==================================================================================================================== #
#
"""
This module contains parts of an abstract document language model for VHDL.
Design units are contexts, entities, architectures, packages and their bodies as well as configurations.
"""
from typing import List, Dict, Union, Iterable, Optional as Nullable
from pyTooling.Decorators import export
from pyTooling.Graph import Vertex
from pyVHDLModel.Exception import VHDLModelException
from pyVHDLModel.Base import ModelEntity, NamedEntityMixin, DocumentedEntityMixin
from pyVHDLModel.Namespace import Namespace
from pyVHDLModel.Symbol import Symbol, PackageSymbol, EntitySymbol
from pyVHDLModel.Interface import GenericInterfaceItem, PortInterfaceItem
from pyVHDLModel.Subprogram import Procedure, Function
from pyVHDLModel.Object import Constant, Variable, Signal
from pyVHDLModel.Type import Type, Subtype
from pyVHDLModel.Concurrent import ConcurrentStatement, ConcurrentStatements, ConcurrentDeclarations
ContextUnion = Union[
'LibraryClause',
'UseClause',
'ContextReference'
]
@export
class Reference(ModelEntity):
_symbols: List[Symbol]
def __init__(self, symbols: Iterable[Symbol]):
super().__init__()
self._symbols = [s for s in symbols]
@property
def Symbols(self) -> List[Symbol]:
return self._symbols
@export
class LibraryClause(Reference):
pass
@export
class UseClause(Reference):
pass
@export
class ContextReference(Reference):
# TODO: rename to ContextClause?
pass
@export
class DesignUnitWithContextMixin: # (metaclass=ExtendedType, useSlots=True):
pass
@export
class DesignUnit(ModelEntity, NamedEntityMixin, DocumentedEntityMixin):
"""A ``DesignUnit`` is a base-class for all design units."""
_library: 'Library' #: The VHDL library, the design unit was analyzed into.
# Either written as statements before (e.g. entity, architecture, package, ...), or as statements inside (context)
_contextItems: List['ContextUnion'] #: List of all context items (library, use and context clauses).
_libraryReferences: List['LibraryClause'] #: List of library clauses.
_packageReferences: List['UseClause'] #: List of use clauses.
_contextReferences: List['ContextReference'] #: List of context clauses.
_referencedLibraries: Dict[str, 'Library'] #: Referenced libraries based on explicit library clauses or implicit inheritance
_referencedPackages: Dict[str, Dict[str, 'Package']] #: Referenced packages based on explicit use clauses or implicit inheritance
_referencedContexts: Dict[str, 'Context'] #: Referenced contexts based on explicit context references or implicit inheritance
_dependencyVertex: Vertex[str, 'DesignUnit', None, None] #: The vertex in the dependency graph
_hierarchyVertex: Vertex[str, 'DesignUnit', None, None] #: The vertex in the hierarchy graph
_namespace: 'Namespace'
def __init__(self, identifier: str, contextItems: Iterable['ContextUnion'] = None, documentation: str = None):
"""
Initializes a design unit.
:param identifier: Identifier (name) of the design unit.
:param contextItems: A sequence of library, use or context clauses.
:param documentation: Associated documentation of the design unit.
"""
super().__init__()
NamedEntityMixin.__init__(self, identifier)
DocumentedEntityMixin.__init__(self, documentation)
self._library = None
self._contextItems = []
self._libraryReferences = []
self._packageReferences = []
self._contextReferences = []
if contextItems is not None:
for item in contextItems:
self._contextItems.append(item)
if isinstance(item, UseClause):
self._packageReferences.append(item)
elif isinstance(item, LibraryClause):
self._libraryReferences.append(item)
elif isinstance(item, ContextReference):
self._contextReferences.append(item)
self._referencedLibraries = {}
self._referencedPackages = {}
self._referencedContexts = {}
self._dependencyVertex = None
self._hierarchyVertex = None
self._namespace = Namespace(self._normalizedIdentifier)
@property
def Document(self) -> 'Document':
return self._parent
@Document.setter
def Document(self, document: 'Document') -> None:
self._parent = document
@property
def Library(self) -> 'Library':
return self._library
@Library.setter
def Library(self, library: 'Library') -> None:
self._library = library
@property
def ContextItems(self) -> List['ContextUnion']:
"""
Read-only property to access the sequence of all context items comprising library, use and context clauses
(:py:attr:`_contextItems`).
:returns: Sequence of context items.
"""
return self._contextItems
@property
def ContextReferences(self) -> List['ContextReference']:
"""
Read-only property to access the sequence of context clauses (:py:attr:`_contextReferences`).
:returns: Sequence of context clauses.
"""
return self._contextReferences
@property
def LibraryReferences(self) -> List['LibraryClause']:
"""
Read-only property to access the sequence of library clauses (:py:attr:`_libraryReferences`).
:returns: Sequence of library clauses.
"""
return self._libraryReferences
@property
def PackageReferences(self) -> List['UseClause']:
"""
Read-only property to access the sequence of use clauses (:py:attr:`_packageReferences`).
:returns: Sequence of use clauses.
"""
return self._packageReferences
@property
def ReferencedLibraries(self) -> Dict[str, 'Library']:
return self._referencedLibraries
@property
def ReferencedPackages(self) -> Dict[str, 'Package']:
return self._referencedPackages
@property
def ReferencedContexts(self) -> Dict[str, 'Context']:
return self._referencedContexts
@property
def DependencyVertex(self) -> Vertex:
return self._dependencyVertex
@property
def HierarchyVertex(self) -> Vertex:
return self._hierarchyVertex
@export
class PrimaryUnit(DesignUnit):
"""A ``PrimaryUnit`` is a base-class for all primary units."""
@export
class SecondaryUnit(DesignUnit):
"""A ``SecondaryUnit`` is a base-class for all secondary units."""
@export
class Context(PrimaryUnit):
_references: List[ContextUnion]
_libraryReferences: List[LibraryClause]
_packageReferences: List[UseClause]
_contextReferences: List[ContextReference]
def __init__(self, identifier: str, references: Iterable[ContextUnion] = None, documentation: str = None):
super().__init__(identifier, documentation)
self._references = []
self._libraryReferences = []
self._packageReferences = []
self._contextReferences = []
if references is not None:
for reference in references:
self._references.append(reference)
reference._parent = self
if isinstance(reference, LibraryClause):
self._libraryReferences.append(reference)
elif isinstance(reference, UseClause):
self._packageReferences.append(reference)
elif isinstance(reference, ContextReference):
self._contextReferences.append(reference)
else:
raise VHDLModelException()
@property
def LibraryReferences(self) -> List[LibraryClause]:
return self._libraryReferences
@property
def PackageReferences(self) -> List[UseClause]:
return self._packageReferences
@property
def ContextReferences(self) -> List[ContextReference]:
return self._contextReferences
[docs] def __str__(self):
lib = self._library.Identifier + "?" if self._library is not None else ""
return f"Context: {lib}.{self.Identifier}"
@export
class Package(PrimaryUnit, DesignUnitWithContextMixin):
_genericItems: List[GenericInterfaceItem]
_declaredItems: List
_types: Dict[str, Union[Type, Subtype]]
_objects: Dict[str, Union[Constant, Variable, Signal]]
_constants: Dict[str, Constant]
_functions: Dict[str, Dict[str, Function]]
_procedures: Dict[str, Dict[str, Procedure]]
_components: Dict[str, 'Component']
def __init__(self, identifier: str, contextItems: Iterable['Context'] = None, genericItems: Iterable[GenericInterfaceItem] = None, declaredItems: Iterable = None, documentation: str = None):
super().__init__(identifier, contextItems, documentation)
DesignUnitWithContextMixin.__init__(self)
# TODO: extract to mixin
self._genericItems = [] # TODO: convert to dict
if genericItems is not None:
for generic in genericItems:
self._genericItems.append(generic)
generic._parent = self
# TODO: extract to mixin
self._declaredItems = [] # TODO: convert to dict
if declaredItems is not None:
for item in declaredItems:
self._declaredItems.append(item)
item._parent = self
self._types = {}
self._objects = {}
self._constants = {}
self._functions = {}
self._procedures = {}
self._components = {}
@property
def GenericItems(self) -> List[GenericInterfaceItem]:
return self._genericItems
@property
def DeclaredItems(self) -> List:
return self._declaredItems
# TODO: move into __init__ ?
# TODO: share with architecture and block statement?
def IndexPackage(self):
for item in self._declaredItems:
if isinstance(item, Type):
print(item)
elif isinstance(item, Subtype):
print(item)
elif isinstance(item, Function):
print(item)
elif isinstance(item, Procedure):
print(item)
elif isinstance(item, Constant):
for identifier in item.Identifiers:
normalizedIdentifier = identifier.lower()
self._constants[normalizedIdentifier] = item
self._objects[normalizedIdentifier] = item
elif isinstance(item, Variable):
for identifier in item.Identifiers:
self._objects[identifier.lower()] = item
elif isinstance(item, Signal):
for identifier in item.Identifiers:
self._objects[identifier.lower()] = item
elif isinstance(item, Component):
self._components[item.NormalizedIdentifier] = item
else:
print(item)
[docs] def __str__(self) -> str:
lib = self._library.Identifier + "?" if self._library is not None else ""
return f"Package: {lib}.{self.Identifier}"
[docs] def __repr__(self) -> str:
lib = self._library.Identifier + "?" if self._library is not None else ""
return f"{lib}.{self.Identifier}"
@export
class PackageBody(SecondaryUnit, DesignUnitWithContextMixin):
_package: PackageSymbol
_declaredItems: List
def __init__(self, packageSymbol: PackageSymbol, contextItems: Iterable['Context'] = None, declaredItems: Iterable = None, documentation: str = None):
super().__init__(packageSymbol.Identifier, contextItems, documentation)
DesignUnitWithContextMixin.__init__(self)
self._package = packageSymbol
packageSymbol._parent = self
# TODO: extract to mixin
self._declaredItems = [] # TODO: convert to dict
if declaredItems is not None:
for item in declaredItems:
self._declaredItems.append(item)
item._parent = self
@property
def Package(self) -> PackageSymbol:
return self._package
@property
def DeclaredItems(self) -> List:
return self._declaredItems
def IndexPackageBody(self):
pass
def LinkDeclaredItemsToPackage(self):
pass
[docs] def __str__(self) -> str:
lib = self._library.Identifier + "?" if self._library is not None else ""
return f"Package Body: {lib}.{self.Identifier}(body)"
[docs] def __repr__(self) -> str:
lib = self._library.Identifier + "?" if self._library is not None else ""
return f"{lib}.{self.Identifier}(body)"
@export
class Entity(PrimaryUnit, DesignUnitWithContextMixin, ConcurrentDeclarations, ConcurrentStatements):
_genericItems: List[GenericInterfaceItem]
_portItems: List[PortInterfaceItem]
_architectures: Dict[str, 'Architecture']
def __init__(
self,
identifier: str,
contextItems: Iterable[ContextUnion] = None,
genericItems: Iterable[GenericInterfaceItem] = None,
portItems: Iterable[PortInterfaceItem] = None,
declaredItems: Iterable = None,
statements: Iterable[ConcurrentStatement] = None,
documentation: str = None
):
super().__init__(identifier, contextItems, documentation)
DesignUnitWithContextMixin.__init__(self)
ConcurrentDeclarations.__init__(self, declaredItems)
ConcurrentStatements.__init__(self, statements)
# TODO: extract to mixin
self._genericItems = []
if genericItems is not None:
for item in genericItems:
self._genericItems.append(item)
item._parent = self
# TODO: extract to mixin
self._portItems = []
if portItems is not None:
for item in portItems:
self._portItems.append(item)
item._parent = self
self._architectures = {}
@property
def GenericItems(self) -> List[GenericInterfaceItem]:
return self._genericItems
@property
def PortItems(self) -> List[PortInterfaceItem]:
return self._portItems
@property
def Architectures(self) -> Dict[str, 'Architecture']:
return self._architectures
[docs] def __str__(self) -> str:
lib = self._library.Identifier + "?" if self._library is not None else ""
return f"Entity: {lib}.{self.Identifier}({', '.join(self._architectures.keys())})"
[docs] def __repr__(self) -> str:
lib = self._library.Identifier + "?" if self._library is not None else ""
return f"{lib}.{self.Identifier}({', '.join(self._architectures.keys())})"
@export
class Architecture(SecondaryUnit, DesignUnitWithContextMixin, ConcurrentDeclarations, ConcurrentStatements):
_library: 'Library' = None
_entity: EntitySymbol
def __init__(self, identifier: str, entity: EntitySymbol, contextItems: Iterable[Context] = None, declaredItems: Iterable = None, statements: Iterable['ConcurrentStatement'] = None, documentation: str = None):
super().__init__(identifier, contextItems, documentation)
DesignUnitWithContextMixin.__init__(self)
ConcurrentDeclarations.__init__(self, declaredItems)
ConcurrentStatements.__init__(self, statements)
self._entity = entity
entity._parent = self
@property
def Entity(self) -> EntitySymbol:
return self._entity
# TODO: move to Design Unit
@property
def Library(self) -> 'Library':
return self._library
@Library.setter
def Library(self, library: 'Library') -> None:
self._library = library
[docs] def __str__(self) -> str:
lib = self._library.Identifier + "?" if self._library is not None else ""
ent = self._entity.Identifier + "?" if self._entity is not None else ""
return f"Architecture: {lib}.{ent}({self.Identifier})"
[docs] def __repr__(self) -> str:
lib = self._library.Identifier + "?" if self._library is not None else ""
ent = self._entity.Identifier + "?" if self._entity is not None else ""
return f"{lib}.{ent}({self.Identifier})"
@export
class Component(ModelEntity, NamedEntityMixin, DocumentedEntityMixin):
_genericItems: List[GenericInterfaceItem]
_portItems: List[PortInterfaceItem]
_entity: Nullable[Entity]
def __init__(self, identifier: str, genericItems: Iterable[GenericInterfaceItem] = None, portItems: Iterable[PortInterfaceItem] = None, documentation: str = None):
super().__init__()
NamedEntityMixin.__init__(self, identifier)
DocumentedEntityMixin.__init__(self, documentation)
# TODO: extract to mixin
self._genericItems = []
if genericItems is not None:
for item in genericItems:
self._genericItems.append(item)
item._parent = self
# TODO: extract to mixin
self._portItems = []
if portItems is not None:
for item in portItems:
self._portItems.append(item)
item._parent = self
@property
def GenericItems(self) -> List[GenericInterfaceItem]:
return self._genericItems
@property
def PortItems(self) -> List[PortInterfaceItem]:
return self._portItems
@property
def Entity(self) -> Nullable[Entity]:
return self._entity
@Entity.setter
def Entity(self, value: Entity) -> None:
self._entity = value
@export
class Configuration(PrimaryUnit, DesignUnitWithContextMixin):
def __init__(self, identifier: str, contextItems: Iterable[Context] = None, documentation: str = None):
super().__init__(identifier, contextItems, documentation)
DesignUnitWithContextMixin.__init__(self)
[docs] def __str__(self) -> str:
lib = self._library.Identifier + "?" if self._library is not None else ""
return f"Configuration: {lib}.{self.Identifier}"
[docs] def __repr__(self) -> str:
lib = self._library.Identifier + "?" if self._library is not None else ""
return f"{lib}.{self.Identifier}"