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359 lines
11 KiB
Python
Executable File
359 lines
11 KiB
Python
Executable File
#!/usr/bin/python3 -i
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#
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# Copyright 2013-2021 The Khronos Group Inc.
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#
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# SPDX-License-Identifier: Apache-2.0
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# Base class for working-group-specific style conventions,
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# used in generation.
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from enum import Enum
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# Type categories that respond "False" to isStructAlwaysValid
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# basetype is home to typedefs like ..Bool32
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CATEGORIES_REQUIRING_VALIDATION = set(('handle',
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'enum',
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'bitmask',
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'basetype',
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None))
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# These are basic C types pulled in via openxr_platform_defines.h
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TYPES_KNOWN_ALWAYS_VALID = set(('char',
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'float',
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'int8_t', 'uint8_t',
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'int32_t', 'uint32_t',
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'int64_t', 'uint64_t',
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'size_t',
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'uintptr_t',
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'int',
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))
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class ProseListFormats(Enum):
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"""A connective, possibly with a quantifier."""
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AND = 0
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EACH_AND = 1
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OR = 2
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ANY_OR = 3
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@classmethod
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def from_string(cls, s):
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if s == 'or':
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return cls.OR
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if s == 'and':
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return cls.AND
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return None
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@property
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def connective(self):
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if self in (ProseListFormats.OR, ProseListFormats.ANY_OR):
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return 'or'
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return 'and'
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def quantifier(self, n):
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"""Return the desired quantifier for a list of a given length."""
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if self == ProseListFormats.ANY_OR:
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if n > 1:
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return 'any of '
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elif self == ProseListFormats.EACH_AND:
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if n > 2:
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return 'each of '
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if n == 2:
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return 'both of '
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return ''
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class ConventionsBase:
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"""WG-specific conventions."""
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def __init__(self):
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self._command_prefix = None
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self._type_prefix = None
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def formatExtension(self, name):
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"""Mark up an extension name as a link the spec."""
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return '`apiext:{}`'.format(name)
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@property
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def null(self):
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"""Preferred spelling of NULL."""
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raise NotImplementedError
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def makeProseList(self, elements, fmt=ProseListFormats.AND, with_verb=False, *args, **kwargs):
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"""Make a (comma-separated) list for use in prose.
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Adds a connective (by default, 'and')
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before the last element if there are more than 1.
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Adds the right one of "is" or "are" to the end if with_verb is true.
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Optionally adds a quantifier (like 'any') before a list of 2 or more,
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if specified by fmt.
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Override with a different method or different call to
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_implMakeProseList if you want to add a comma for two elements,
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or not use a serial comma.
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"""
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return self._implMakeProseList(elements, fmt, with_verb, *args, **kwargs)
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@property
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def struct_macro(self):
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"""Get the appropriate format macro for a structure.
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May override.
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"""
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return 'slink:'
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@property
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def external_macro(self):
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"""Get the appropriate format macro for an external type like uint32_t.
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May override.
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"""
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return 'code:'
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def makeStructName(self, name):
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"""Prepend the appropriate format macro for a structure to a structure type name.
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Uses struct_macro, so just override that if you want to change behavior.
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"""
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return self.struct_macro + name
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def makeExternalTypeName(self, name):
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"""Prepend the appropriate format macro for an external type like uint32_t to a type name.
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Uses external_macro, so just override that if you want to change behavior.
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"""
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return self.external_macro + name
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def _implMakeProseList(self, elements, fmt, with_verb, comma_for_two_elts=False, serial_comma=True):
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"""Internal-use implementation to make a (comma-separated) list for use in prose.
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Adds a connective (by default, 'and')
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before the last element if there are more than 1,
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and only includes commas if there are more than 2
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(if comma_for_two_elts is False).
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Adds the right one of "is" or "are" to the end if with_verb is true.
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Optionally adds a quantifier (like 'any') before a list of 2 or more,
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if specified by fmt.
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Do not edit these defaults, override self.makeProseList().
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"""
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assert(serial_comma) # did not implement what we did not need
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if isinstance(fmt, str):
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fmt = ProseListFormats.from_string(fmt)
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my_elts = list(elements)
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if len(my_elts) > 1:
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my_elts[-1] = '{} {}'.format(fmt.connective, my_elts[-1])
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if not comma_for_two_elts and len(my_elts) <= 2:
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prose = ' '.join(my_elts)
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else:
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prose = ', '.join(my_elts)
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quantifier = fmt.quantifier(len(my_elts))
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parts = [quantifier, prose]
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if with_verb:
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if len(my_elts) > 1:
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parts.append(' are')
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else:
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parts.append(' is')
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return ''.join(parts)
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@property
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def file_suffix(self):
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"""Return suffix of generated Asciidoctor files"""
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raise NotImplementedError
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def api_name(self, spectype=None):
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"""Return API or specification name for citations in ref pages.
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spectype is the spec this refpage is for.
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'api' (the default value) is the main API Specification.
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If an unrecognized spectype is given, returns None.
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Must implement."""
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raise NotImplementedError
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def should_insert_may_alias_macro(self, genOpts):
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"""Return true if we should insert a "may alias" macro in this file.
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Only used by OpenXR right now."""
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return False
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@property
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def command_prefix(self):
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"""Return the expected prefix of commands/functions.
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Implemented in terms of api_prefix."""
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if not self._command_prefix:
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self._command_prefix = self.api_prefix[:].replace('_', '').lower()
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return self._command_prefix
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@property
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def type_prefix(self):
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"""Return the expected prefix of type names.
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Implemented in terms of command_prefix (and in turn, api_prefix)."""
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if not self._type_prefix:
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self._type_prefix = ''.join(
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(self.command_prefix[0:1].upper(), self.command_prefix[1:]))
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return self._type_prefix
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@property
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def api_prefix(self):
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"""Return API token prefix.
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Typically two uppercase letters followed by an underscore.
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Must implement."""
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raise NotImplementedError
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@property
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def api_version_prefix(self):
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"""Return API core version token prefix.
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Implemented in terms of api_prefix.
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May override."""
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return self.api_prefix + 'VERSION_'
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@property
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def KHR_prefix(self):
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"""Return extension name prefix for KHR extensions.
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Implemented in terms of api_prefix.
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May override."""
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return self.api_prefix + 'KHR_'
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@property
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def EXT_prefix(self):
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"""Return extension name prefix for EXT extensions.
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Implemented in terms of api_prefix.
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May override."""
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return self.api_prefix + 'EXT_'
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def writeFeature(self, featureExtraProtect, filename):
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"""Return True if OutputGenerator.endFeature should write this feature.
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Defaults to always True.
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Used in COutputGenerator.
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May override."""
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return True
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def requires_error_validation(self, return_type):
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"""Return True if the return_type element is an API result code
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requiring error validation.
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Defaults to always False.
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May override."""
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return False
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@property
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def required_errors(self):
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"""Return a list of required error codes for validation.
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Defaults to an empty list.
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May override."""
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return []
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def is_voidpointer_alias(self, tag, text, tail):
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"""Return True if the declaration components (tag,text,tail) of an
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element represents a void * type.
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Defaults to a reasonable implementation.
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May override."""
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return tag == 'type' and text == 'void' and tail.startswith('*')
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def make_voidpointer_alias(self, tail):
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"""Reformat a void * declaration to include the API alias macro.
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Defaults to a no-op.
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Must override if you actually want to use this feature in your project."""
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return tail
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def category_requires_validation(self, category):
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"""Return True if the given type 'category' always requires validation.
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Defaults to a reasonable implementation.
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May override."""
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return category in CATEGORIES_REQUIRING_VALIDATION
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def type_always_valid(self, typename):
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"""Return True if the given type name is always valid (never requires validation).
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This is for things like integers.
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Defaults to a reasonable implementation.
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May override."""
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return typename in TYPES_KNOWN_ALWAYS_VALID
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@property
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def should_skip_checking_codes(self):
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"""Return True if more than the basic validation of return codes should
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be skipped for a command."""
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return False
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@property
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def generate_index_terms(self):
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"""Return True if asiidoctor index terms should be generated as part
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of an API interface from the docgenerator."""
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return False
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@property
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def generate_enum_table(self):
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"""Return True if asciidoctor tables describing enumerants in a
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group should be generated as part of group generation."""
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return False
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@property
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def generate_max_enum_in_docs(self):
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"""Return True if MAX_ENUM tokens should be generated in
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documentation includes."""
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return False
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def extension_include_string(self, ext):
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"""Return format string for include:: line for an extension appendix
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file. ext is an object with the following members:
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- name - extension string string
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- vendor - vendor portion of name
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- barename - remainder of name
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Must implement."""
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raise NotImplementedError
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@property
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def refpage_generated_include_path(self):
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"""Return path relative to the generated reference pages, to the
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generated API include files.
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Must implement."""
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raise NotImplementedError
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def valid_flag_bit(self, bitpos):
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"""Return True if bitpos is an allowed numeric bit position for
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an API flag.
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Behavior depends on the data type used for flags (which may be 32
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or 64 bits), and may depend on assumptions about compiler
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handling of sign bits in enumerated types, as well."""
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return True
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