262 lines
9.3 KiB
Python
262 lines
9.3 KiB
Python
#!/usr/bin/python3 -i
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#
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# Copyright (c) 2013-2020 The Khronos Group Inc.
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#
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# SPDX-License-Identifier: Apache-2.0
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# Working-group-specific style conventions,
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# used in generation.
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import re
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import os
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from conventions import ConventionsBase
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# Modified from default implementation - see category_requires_validation() below
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CATEGORIES_REQUIRING_VALIDATION = set(('handle', 'enum', 'bitmask'))
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# Tokenize into "words" for structure types, approximately per spec "Implicit Valid Usage" section 2.7.2
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# This first set is for things we recognize explicitly as words,
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# as exceptions to the general regex.
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# Ideally these would be listed in the spec as exceptions, as OpenXR does.
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SPECIAL_WORDS = set((
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'16Bit', # VkPhysicalDevice16BitStorageFeatures
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'8Bit', # VkPhysicalDevice8BitStorageFeaturesKHR
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'AABB', # VkGeometryAABBNV
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'ASTC', # VkPhysicalDeviceTextureCompressionASTCHDRFeaturesEXT
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'D3D12', # VkD3D12FenceSubmitInfoKHR
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'Float16', # VkPhysicalDeviceShaderFloat16Int8FeaturesKHR
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'ImagePipe', # VkImagePipeSurfaceCreateInfoFUCHSIA
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'Int64', # VkPhysicalDeviceShaderAtomicInt64FeaturesKHR
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'Int8', # VkPhysicalDeviceShaderFloat16Int8FeaturesKHR
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'MacOS', # VkMacOSSurfaceCreateInfoMVK
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'Uint8', # VkPhysicalDeviceIndexTypeUint8FeaturesEXT
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'Win32', # VkWin32SurfaceCreateInfoKHR
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))
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# A regex to match any of the SPECIAL_WORDS
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EXCEPTION_PATTERN = r'(?P<exception>{})'.format(
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'|'.join('(%s)' % re.escape(w) for w in SPECIAL_WORDS))
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MAIN_RE = re.compile(
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# the negative lookahead is to prevent the all-caps pattern from being too greedy.
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r'({}|([0-9]+)|([A-Z][a-z]+)|([A-Z][A-Z]*(?![a-z])))'.format(EXCEPTION_PATTERN))
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class VulkanConventions(ConventionsBase):
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@property
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def null(self):
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"""Preferred spelling of NULL."""
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return '`NULL`'
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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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Primarily affects generated valid usage statements.
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"""
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return 'slink:'
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@property
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def constFlagBits(self):
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"""Returns True if static const flag bits should be generated, False if an enumerated type should be generated."""
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return False
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@property
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def structtype_member_name(self):
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"""Return name of the structure type member"""
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return 'sType'
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@property
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def nextpointer_member_name(self):
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"""Return name of the structure pointer chain member"""
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return 'pNext'
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@property
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def valid_pointer_prefix(self):
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"""Return prefix to pointers which must themselves be valid"""
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return 'valid'
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def is_structure_type_member(self, paramtype, paramname):
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"""Determine if member type and name match the structure type member."""
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return paramtype == 'VkStructureType' and paramname == self.structtype_member_name
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def is_nextpointer_member(self, paramtype, paramname):
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"""Determine if member type and name match the next pointer chain member."""
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return paramtype == 'void' and paramname == self.nextpointer_member_name
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def generate_structure_type_from_name(self, structname):
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"""Generate a structure type name, like VK_STRUCTURE_TYPE_CREATE_INSTANCE_INFO"""
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structure_type_parts = []
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# Tokenize into "words"
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for elem in MAIN_RE.findall(structname):
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word = elem[0]
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if word == 'Vk':
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structure_type_parts.append('VK_STRUCTURE_TYPE')
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else:
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structure_type_parts.append(word.upper())
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return '_'.join(structure_type_parts)
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@property
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def warning_comment(self):
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"""Return warning comment to be placed in header of generated Asciidoctor files"""
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return '// WARNING: DO NOT MODIFY! This file is automatically generated from the vk.xml registry'
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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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return '.txt'
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def api_name(self, spectype='api'):
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"""Return API or specification name for citations in ref pages.ref
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pages should link to for
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spectype is the spec this refpage is for: 'api' is the Vulkan API
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Specification. Defaults to 'api'. If an unrecognized spectype is
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given, returns None.
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"""
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if spectype == 'api' or spectype is None:
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return 'Vulkan'
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else:
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return None
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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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return 'VK_'
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@property
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def write_contacts(self):
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"""Return whether contact list should be written to extension appendices"""
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return True
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@property
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def write_refpage_include(self):
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"""Return whether refpage include should be written to extension appendices"""
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return True
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@property
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def member_used_for_unique_vuid(self):
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"""Return the member name used in the VUID-...-...-unique ID."""
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return self.structtype_member_name
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def is_externsync_command(self, protoname):
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"""Returns True if the protoname element is an API command requiring
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external synchronization
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"""
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return protoname is not None and 'vkCmd' in protoname
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def is_api_name(self, name):
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"""Returns True if name is in the reserved API namespace.
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For Vulkan, these are names with a case-insensitive 'vk' prefix, or
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a 'PFN_vk' function pointer type prefix.
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"""
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return name[0:2].lower() == 'vk' or name[0:6] == 'PFN_vk'
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def specURL(self, spectype='api'):
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"""Return public registry URL which ref pages should link to for the
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current all-extensions HTML specification, so xrefs in the
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asciidoc source that aren't to ref pages can link into it
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instead. N.b. this may need to change on a per-refpage basis if
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there are multiple documents involved.
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"""
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return 'https://www.khronos.org/registry/vulkan/specs/1.2-extensions/html/vkspec.html'
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@property
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def xml_api_name(self):
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"""Return the name used in the default API XML registry for the default API"""
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return 'vulkan'
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@property
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def registry_path(self):
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"""Return relpath to the default API XML registry in this project."""
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return 'xml/vk.xml'
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@property
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def specification_path(self):
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"""Return relpath to the Asciidoctor specification sources in this project."""
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return '{generated}/meta'
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@property
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def special_use_section_anchor(self):
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"""Return asciidoctor anchor name in the API Specification of the
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section describing extension special uses in detail."""
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return 'extendingvulkan-compatibility-specialuse'
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@property
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def extra_refpage_headers(self):
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"""Return any extra text to add to refpage headers."""
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return 'include::{config}/attribs.txt[]'
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@property
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def extension_index_prefixes(self):
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"""Return a list of extension prefixes used to group extension refpages."""
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return ['VK_KHR', 'VK_EXT', 'VK']
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@property
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def unified_flag_refpages(self):
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"""Return True if Flags/FlagBits refpages are unified, False if
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they're separate.
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"""
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return False
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@property
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def spec_reflow_path(self):
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"""Return the path to the spec source folder to reflow"""
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return os.getcwd()
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@property
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def spec_no_reflow_dirs(self):
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"""Return a set of directories not to automatically descend into
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when reflowing spec text
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"""
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return ('scripts', 'style')
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@property
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def zero(self):
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return '`0`'
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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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Overridden because Vulkan doesn't require "valid" text for basetype in the spec right now."""
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return category in CATEGORIES_REQUIRING_VALIDATION
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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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Vulkan mostly relies on the validation layers rather than API
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builtin error checking, so these checks are not appropriate.
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For example, passing in a VkFormat parameter will not potentially
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generate a VK_ERROR_FORMAT_NOT_SUPPORTED code."""
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return True
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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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return 'include::{{appendices}}/{name}{suffix}[]'.format(
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name=ext.name, suffix=self.file_suffix)
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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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return "{generated}"
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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 bit.
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Vulkan uses 32 bit Vk*Flags types, and assumes C compilers may
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cause Vk*FlagBits values with bit 31 set to result in a 64 bit
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enumerated type, so disallows such flags."""
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return bitpos >= 0 and bitpos < 31
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