yuzu/externals/Vulkan-Headers/registry/reg.py

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2020-12-28 19:15:37 +04:00
#!/usr/bin/python3 -i
#
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# Copyright 2013-2021 The Khronos Group Inc.
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#
# SPDX-License-Identifier: Apache-2.0
"""Types and classes for manipulating an API registry."""
import copy
import re
import sys
import xml.etree.ElementTree as etree
from collections import defaultdict, namedtuple
from generator import OutputGenerator, GeneratorOptions, write
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import pdb
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def apiNameMatch(str, supported):
"""Return whether a required api name matches a pattern specified for an
XML <feature> 'api' attribute or <extension> 'supported' attribute.
- str - api name such as 'vulkan' or 'openxr'
- supported - comma-separated list of XML API names"""
return (str is not None and str in supported.split(','))
def matchAPIProfile(api, profile, elem):
"""Return whether an API and profile
being generated matches an element's profile
- api - string naming the API to match
- profile - string naming the profile to match
- elem - Element which (may) have 'api' and 'profile'
attributes to match to.
If a tag is not present in the Element, the corresponding API
or profile always matches.
Otherwise, the tag must exactly match the API or profile.
Thus, if 'profile' = core:
- `<remove>` with no attribute will match
- `<remove profile="core">` will match
- `<remove profile="compatibility">` will not match
Possible match conditions:
```
Requested Element
Profile Profile
--------- --------
None None Always matches
'string' None Always matches
None 'string' Does not match. Can't generate multiple APIs
or profiles, so if an API/profile constraint
is present, it must be asked for explicitly.
'string' 'string' Strings must match
```
** In the future, we will allow regexes for the attributes,
not just strings, so that `api="^(gl|gles2)"` will match. Even
this isn't really quite enough, we might prefer something
like `"gl(core)|gles1(common-lite)"`."""
# Match 'api', if present
elem_api = elem.get('api')
if elem_api:
if api is None:
raise UserWarning("No API requested, but 'api' attribute is present with value '"
+ elem_api + "'")
elif api != elem_api:
# Requested API doesn't match attribute
return False
elem_profile = elem.get('profile')
if elem_profile:
if profile is None:
raise UserWarning("No profile requested, but 'profile' attribute is present with value '"
+ elem_profile + "'")
elif profile != elem_profile:
# Requested profile doesn't match attribute
return False
return True
class BaseInfo:
"""Base class for information about a registry feature
(type/group/enum/command/API/extension).
Represents the state of a registry feature, used during API generation.
"""
def __init__(self, elem):
self.required = False
"""should this feature be defined during header generation
(has it been removed by a profile or version)?"""
self.declared = False
"has this feature been defined already?"
self.elem = elem
"etree Element for this feature"
def resetState(self):
"""Reset required/declared to initial values. Used
prior to generating a new API interface."""
self.required = False
self.declared = False
def compareKeys(self, info, key, required = False):
"""Return True if self.elem and info.elem have the same attribute
value for key.
If 'required' is not True, also returns True if neither element
has an attribute value for key."""
if required and key not in self.elem.keys():
return False
return self.elem.get(key) == info.elem.get(key)
def compareElem(self, info, infoName):
"""Return True if self.elem and info.elem have the same definition.
info - the other object
infoName - 'type' / 'group' / 'enum' / 'command' / 'feature' /
'extension'"""
if infoName == 'enum':
if self.compareKeys(info, 'extends'):
# Either both extend the same type, or no type
if (self.compareKeys(info, 'value', required = True) or
self.compareKeys(info, 'bitpos', required = True)):
# If both specify the same value or bit position,
# they're equal
return True
elif (self.compareKeys(info, 'extnumber') and
self.compareKeys(info, 'offset') and
self.compareKeys(info, 'dir')):
# If both specify the same relative offset, they're equal
return True
elif (self.compareKeys(info, 'alias')):
# If both are aliases of the same value
return True
else:
return False
else:
# The same enum can't extend two different types
return False
else:
# Non-<enum>s should never be redefined
return False
class TypeInfo(BaseInfo):
"""Registry information about a type. No additional state
beyond BaseInfo is required."""
def __init__(self, elem):
BaseInfo.__init__(self, elem)
self.additionalValidity = []
self.removedValidity = []
def getMembers(self):
"""Get a collection of all member elements for this type, if any."""
return self.elem.findall('member')
def resetState(self):
BaseInfo.resetState(self)
self.additionalValidity = []
self.removedValidity = []
class GroupInfo(BaseInfo):
"""Registry information about a group of related enums
in an <enums> block, generally corresponding to a C "enum" type."""
def __init__(self, elem):
BaseInfo.__init__(self, elem)
class EnumInfo(BaseInfo):
"""Registry information about an enum"""
def __init__(self, elem):
BaseInfo.__init__(self, elem)
self.type = elem.get('type')
"""numeric type of the value of the <enum> tag
( '' for GLint, 'u' for GLuint, 'ull' for GLuint64 )"""
if self.type is None:
self.type = ''
class CmdInfo(BaseInfo):
"""Registry information about a command"""
def __init__(self, elem):
BaseInfo.__init__(self, elem)
self.additionalValidity = []
self.removedValidity = []
def getParams(self):
"""Get a collection of all param elements for this command, if any."""
return self.elem.findall('param')
def resetState(self):
BaseInfo.resetState(self)
self.additionalValidity = []
self.removedValidity = []
class FeatureInfo(BaseInfo):
"""Registry information about an API <feature>
or <extension>."""
def __init__(self, elem):
BaseInfo.__init__(self, elem)
self.name = elem.get('name')
"feature name string (e.g. 'VK_KHR_surface')"
self.emit = False
"has this feature been defined already?"
self.sortorder = int(elem.get('sortorder', 0))
"""explicit numeric sort key within feature and extension groups.
Defaults to 0."""
# Determine element category (vendor). Only works
# for <extension> elements.
if elem.tag == 'feature':
# Element category (vendor) is meaningless for <feature>
self.category = 'VERSION'
"""category, e.g. VERSION or khr/vendor tag"""
self.version = elem.get('name')
"""feature name string"""
self.versionNumber = elem.get('number')
"""versionNumber - API version number, taken from the 'number'
attribute of <feature>. Extensions do not have API version
numbers and are assigned number 0."""
self.number = "0"
self.supported = None
else:
# Extract vendor portion of <APIprefix>_<vendor>_<name>
self.category = self.name.split('_', 2)[1]
self.version = "0"
self.versionNumber = "0"
self.number = elem.get('number')
"""extension number, used for ordering and for assigning
enumerant offsets. <feature> features do not have extension
numbers and are assigned number 0."""
# If there's no 'number' attribute, use 0, so sorting works
if self.number is None:
self.number = 0
self.supported = elem.get('supported')
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class SpirvInfo(BaseInfo):
"""Registry information about an API <spirvextensions>
or <spirvcapability>."""
def __init__(self, elem):
BaseInfo.__init__(self, elem)
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class Registry:
"""Object representing an API registry, loaded from an XML file."""
def __init__(self, gen=None, genOpts=None):
if gen is None:
# If not specified, give a default object so messaging will work
self.gen = OutputGenerator()
else:
self.gen = gen
"Output generator used to write headers / messages"
if genOpts is None:
self.genOpts = GeneratorOptions()
else:
self.genOpts = genOpts
"Options controlling features to write and how to format them"
self.gen.registry = self
self.gen.genOpts = self.genOpts
self.gen.genOpts.registry = self
self.tree = None
"ElementTree containing the root `<registry>`"
self.typedict = {}
"dictionary of TypeInfo objects keyed by type name"
self.groupdict = {}
"dictionary of GroupInfo objects keyed by group name"
self.enumdict = {}
"dictionary of EnumInfo objects keyed by enum name"
self.cmddict = {}
"dictionary of CmdInfo objects keyed by command name"
self.apidict = {}
"dictionary of FeatureInfo objects for `<feature>` elements keyed by API name"
self.extensions = []
"list of `<extension>` Elements"
self.extdict = {}
"dictionary of FeatureInfo objects for `<extension>` elements keyed by extension name"
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self.spirvextdict = {}
"dictionary of FeatureInfo objects for `<spirvextension>` elements keyed by spirv extension name"
self.spirvcapdict = {}
"dictionary of FeatureInfo objects for `<spirvcapability>` elements keyed by spirv capability name"
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self.emitFeatures = False
"""True to actually emit features for a version / extension,
or False to just treat them as emitted"""
self.breakPat = None
"regexp pattern to break on when generating names"
# self.breakPat = re.compile('VkFenceImportFlagBits.*')
self.requiredextensions = [] # Hack - can remove it after validity generator goes away
# ** Global types for automatic source generation **
# Length Member data
self.commandextensiontuple = namedtuple('commandextensiontuple',
['command', # The name of the command being modified
'value', # The value to append to the command
'extension']) # The name of the extension that added it
self.validextensionstructs = defaultdict(list)
self.commandextensionsuccesses = []
self.commandextensionerrors = []
self.filename = None
def loadElementTree(self, tree):
"""Load ElementTree into a Registry object and parse it."""
self.tree = tree
self.parseTree()
def loadFile(self, file):
"""Load an API registry XML file into a Registry object and parse it"""
self.filename = file
self.tree = etree.parse(file)
self.parseTree()
def setGenerator(self, gen):
"""Specify output generator object.
`None` restores the default generator."""
self.gen = gen
self.gen.setRegistry(self)
def addElementInfo(self, elem, info, infoName, dictionary):
"""Add information about an element to the corresponding dictionary.
Intended for internal use only.
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- elem - `<type>`/`<enums>`/`<enum>`/`<command>`/`<feature>`/`<extension>`/`<spirvextension>`/`<spirvcapability>` Element
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- info - corresponding {Type|Group|Enum|Cmd|Feature|Spirv}Info object
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- infoName - 'type' / 'group' / 'enum' / 'command' / 'feature' / 'extension' / 'spirvextension' / 'spirvcapability'
- dictionary - self.{type|group|enum|cmd|api|ext|spirvext|spirvcap}dict
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If the Element has an 'api' attribute, the dictionary key is the
tuple (name,api). If not, the key is the name. 'name' is an
attribute of the Element"""
# self.gen.logMsg('diag', 'Adding ElementInfo.required =',
# info.required, 'name =', elem.get('name'))
api = elem.get('api')
if api:
key = (elem.get('name'), api)
else:
key = elem.get('name')
if key in dictionary:
if not dictionary[key].compareElem(info, infoName):
self.gen.logMsg('warn', 'Attempt to redefine', key,
'(this should not happen)')
else:
True
else:
dictionary[key] = info
def lookupElementInfo(self, fname, dictionary):
"""Find a {Type|Enum|Cmd}Info object by name.
Intended for internal use only.
If an object qualified by API name exists, use that.
- fname - name of type / enum / command
- dictionary - self.{type|enum|cmd}dict"""
key = (fname, self.genOpts.apiname)
if key in dictionary:
# self.gen.logMsg('diag', 'Found API-specific element for feature', fname)
return dictionary[key]
if fname in dictionary:
# self.gen.logMsg('diag', 'Found generic element for feature', fname)
return dictionary[fname]
return None
def breakOnName(self, regexp):
"""Specify a feature name regexp to break on when generating features."""
self.breakPat = re.compile(regexp)
def parseTree(self):
"""Parse the registry Element, once created"""
# This must be the Element for the root <registry>
self.reg = self.tree.getroot()
# Create dictionary of registry types from toplevel <types> tags
# and add 'name' attribute to each <type> tag (where missing)
# based on its <name> element.
#
# There's usually one <types> block; more are OK
# Required <type> attributes: 'name' or nested <name> tag contents
self.typedict = {}
for type_elem in self.reg.findall('types/type'):
# If the <type> doesn't already have a 'name' attribute, set
# it from contents of its <name> tag.
if type_elem.get('name') is None:
type_elem.set('name', type_elem.find('name').text)
self.addElementInfo(type_elem, TypeInfo(type_elem), 'type', self.typedict)
# Create dictionary of registry enum groups from <enums> tags.
#
# Required <enums> attributes: 'name'. If no name is given, one is
# generated, but that group can't be identified and turned into an
# enum type definition - it's just a container for <enum> tags.
self.groupdict = {}
for group in self.reg.findall('enums'):
self.addElementInfo(group, GroupInfo(group), 'group', self.groupdict)
# Create dictionary of registry enums from <enum> tags
#
# <enums> tags usually define different namespaces for the values
# defined in those tags, but the actual names all share the
# same dictionary.
# Required <enum> attributes: 'name', 'value'
# For containing <enums> which have type="enum" or type="bitmask",
# tag all contained <enum>s are required. This is a stopgap until
# a better scheme for tagging core and extension enums is created.
self.enumdict = {}
for enums in self.reg.findall('enums'):
required = (enums.get('type') is not None)
for enum in enums.findall('enum'):
enumInfo = EnumInfo(enum)
enumInfo.required = required
self.addElementInfo(enum, enumInfo, 'enum', self.enumdict)
# Create dictionary of registry commands from <command> tags
# and add 'name' attribute to each <command> tag (where missing)
# based on its <proto><name> element.
#
# There's usually only one <commands> block; more are OK.
# Required <command> attributes: 'name' or <proto><name> tag contents
self.cmddict = {}
# List of commands which alias others. Contains
# [ aliasName, element ]
# for each alias
cmdAlias = []
for cmd in self.reg.findall('commands/command'):
# If the <command> doesn't already have a 'name' attribute, set
# it from contents of its <proto><name> tag.
name = cmd.get('name')
if name is None:
name = cmd.set('name', cmd.find('proto/name').text)
ci = CmdInfo(cmd)
self.addElementInfo(cmd, ci, 'command', self.cmddict)
alias = cmd.get('alias')
if alias:
cmdAlias.append([name, alias, cmd])
# Now loop over aliases, injecting a copy of the aliased command's
# Element with the aliased prototype name replaced with the command
# name - if it exists.
for (name, alias, cmd) in cmdAlias:
if alias in self.cmddict:
aliasInfo = self.cmddict[alias]
cmdElem = copy.deepcopy(aliasInfo.elem)
cmdElem.find('proto/name').text = name
cmdElem.set('name', name)
cmdElem.set('alias', alias)
ci = CmdInfo(cmdElem)
# Replace the dictionary entry for the CmdInfo element
self.cmddict[name] = ci
# @ newString = etree.tostring(base, encoding="unicode").replace(aliasValue, aliasName)
# @elem.append(etree.fromstring(replacement))
else:
self.gen.logMsg('warn', 'No matching <command> found for command',
cmd.get('name'), 'alias', alias)
# Create dictionaries of API and extension interfaces
# from toplevel <api> and <extension> tags.
self.apidict = {}
for feature in self.reg.findall('feature'):
featureInfo = FeatureInfo(feature)
self.addElementInfo(feature, featureInfo, 'feature', self.apidict)
# Add additional enums defined only in <feature> tags
# to the corresponding enumerated type.
# When seen here, the <enum> element, processed to contain the
# numeric enum value, is added to the corresponding <enums>
# element, as well as adding to the enum dictionary. It is no
# longer removed from the <require> element it is introduced in.
# Instead, generateRequiredInterface ignores <enum> elements
# that extend enumerated types.
#
# For <enum> tags which are actually just constants, if there's
# no 'extends' tag but there is a 'value' or 'bitpos' tag, just
# add an EnumInfo record to the dictionary. That works because
# output generation of constants is purely dependency-based, and
# doesn't need to iterate through the XML tags.
for elem in feature.findall('require'):
for enum in elem.findall('enum'):
addEnumInfo = False
groupName = enum.get('extends')
if groupName is not None:
# self.gen.logMsg('diag', 'Found extension enum',
# enum.get('name'))
# Add version number attribute to the <enum> element
enum.set('version', featureInfo.version)
# Look up the GroupInfo with matching groupName
if groupName in self.groupdict:
# self.gen.logMsg('diag', 'Matching group',
# groupName, 'found, adding element...')
gi = self.groupdict[groupName]
gi.elem.append(copy.deepcopy(enum))
else:
self.gen.logMsg('warn', 'NO matching group',
groupName, 'for enum', enum.get('name'), 'found.')
addEnumInfo = True
elif enum.get('value') or enum.get('bitpos') or enum.get('alias'):
# self.gen.logMsg('diag', 'Adding extension constant "enum"',
# enum.get('name'))
addEnumInfo = True
if addEnumInfo:
enumInfo = EnumInfo(enum)
self.addElementInfo(enum, enumInfo, 'enum', self.enumdict)
self.extensions = self.reg.findall('extensions/extension')
self.extdict = {}
for feature in self.extensions:
featureInfo = FeatureInfo(feature)
self.addElementInfo(feature, featureInfo, 'extension', self.extdict)
# Add additional enums defined only in <extension> tags
# to the corresponding core type.
# Algorithm matches that of enums in a "feature" tag as above.
#
# This code also adds a 'extnumber' attribute containing the
# extension number, used for enumerant value calculation.
for elem in feature.findall('require'):
for enum in elem.findall('enum'):
addEnumInfo = False
groupName = enum.get('extends')
if groupName is not None:
# self.gen.logMsg('diag', 'Found extension enum',
# enum.get('name'))
# Add <extension> block's extension number attribute to
# the <enum> element unless specified explicitly, such
# as when redefining an enum in another extension.
extnumber = enum.get('extnumber')
if not extnumber:
enum.set('extnumber', featureInfo.number)
enum.set('extname', featureInfo.name)
enum.set('supported', featureInfo.supported)
# Look up the GroupInfo with matching groupName
if groupName in self.groupdict:
# self.gen.logMsg('diag', 'Matching group',
# groupName, 'found, adding element...')
gi = self.groupdict[groupName]
gi.elem.append(copy.deepcopy(enum))
else:
self.gen.logMsg('warn', 'NO matching group',
groupName, 'for enum', enum.get('name'), 'found.')
addEnumInfo = True
elif enum.get('value') or enum.get('bitpos') or enum.get('alias'):
# self.gen.logMsg('diag', 'Adding extension constant "enum"',
# enum.get('name'))
addEnumInfo = True
if addEnumInfo:
enumInfo = EnumInfo(enum)
self.addElementInfo(enum, enumInfo, 'enum', self.enumdict)
# Construct a "validextensionstructs" list for parent structures
# based on "structextends" tags in child structures
disabled_types = []
for disabled_ext in self.reg.findall('extensions/extension[@supported="disabled"]'):
for type_elem in disabled_ext.findall("*/type"):
disabled_types.append(type_elem.get('name'))
for type_elem in self.reg.findall('types/type'):
if type_elem.get('name') not in disabled_types:
parentStructs = type_elem.get('structextends')
if parentStructs is not None:
for parent in parentStructs.split(','):
# self.gen.logMsg('diag', type.get('name'), 'extends', parent)
self.validextensionstructs[parent].append(type_elem.get('name'))
# Sort the lists so they don't depend on the XML order
for parent in self.validextensionstructs:
self.validextensionstructs[parent].sort()
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# Parse out all spirv tags in dictionaries
# Use addElementInfo to catch duplicates
for spirv in self.reg.findall('spirvextensions/spirvextension'):
spirvInfo = SpirvInfo(spirv)
self.addElementInfo(spirv, spirvInfo, 'spirvextension', self.spirvextdict)
for spirv in self.reg.findall('spirvcapabilities/spirvcapability'):
spirvInfo = SpirvInfo(spirv)
self.addElementInfo(spirv, spirvInfo, 'spirvcapability', self.spirvcapdict)
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def dumpReg(self, maxlen=120, filehandle=sys.stdout):
"""Dump all the dictionaries constructed from the Registry object.
Diagnostic to dump the dictionaries to specified file handle (default stdout).
Truncates type / enum / command elements to maxlen characters (default 120)"""
write('***************************************', file=filehandle)
write(' ** Dumping Registry contents **', file=filehandle)
write('***************************************', file=filehandle)
write('// Types', file=filehandle)
for name in self.typedict:
tobj = self.typedict[name]
write(' Type', name, '->', etree.tostring(tobj.elem)[0:maxlen], file=filehandle)
write('// Groups', file=filehandle)
for name in self.groupdict:
gobj = self.groupdict[name]
write(' Group', name, '->', etree.tostring(gobj.elem)[0:maxlen], file=filehandle)
write('// Enums', file=filehandle)
for name in self.enumdict:
eobj = self.enumdict[name]
write(' Enum', name, '->', etree.tostring(eobj.elem)[0:maxlen], file=filehandle)
write('// Commands', file=filehandle)
for name in self.cmddict:
cobj = self.cmddict[name]
write(' Command', name, '->', etree.tostring(cobj.elem)[0:maxlen], file=filehandle)
write('// APIs', file=filehandle)
for key in self.apidict:
write(' API Version ', key, '->',
etree.tostring(self.apidict[key].elem)[0:maxlen], file=filehandle)
write('// Extensions', file=filehandle)
for key in self.extdict:
write(' Extension', key, '->',
etree.tostring(self.extdict[key].elem)[0:maxlen], file=filehandle)
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write('// SPIR-V', file=filehandle)
for key in self.spirvextdict:
write(' SPIR-V Extension', key, '->',
etree.tostring(self.spirvextdict[key].elem)[0:maxlen], file=filehandle)
for key in self.spirvcapdict:
write(' SPIR-V Capability', key, '->',
etree.tostring(self.spirvcapdict[key].elem)[0:maxlen], file=filehandle)
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def markTypeRequired(self, typename, required):
"""Require (along with its dependencies) or remove (but not its dependencies) a type.
- typename - name of type
- required - boolean (to tag features as required or not)
"""
self.gen.logMsg('diag', 'tagging type:', typename, '-> required =', required)
# Get TypeInfo object for <type> tag corresponding to typename
typeinfo = self.lookupElementInfo(typename, self.typedict)
if typeinfo is not None:
if required:
# Tag type dependencies in 'alias' and 'required' attributes as
# required. This does not un-tag dependencies in a <remove>
# tag. See comments in markRequired() below for the reason.
for attrib_name in ['requires', 'alias']:
depname = typeinfo.elem.get(attrib_name)
if depname:
self.gen.logMsg('diag', 'Generating dependent type',
depname, 'for', attrib_name, 'type', typename)
# Don't recurse on self-referential structures.
if typename != depname:
self.markTypeRequired(depname, required)
else:
self.gen.logMsg('diag', 'type', typename, 'is self-referential')
# Tag types used in defining this type (e.g. in nested
# <type> tags)
# Look for <type> in entire <command> tree,
# not just immediate children
for subtype in typeinfo.elem.findall('.//type'):
self.gen.logMsg('diag', 'markRequired: type requires dependent <type>', subtype.text)
if typename != subtype.text:
self.markTypeRequired(subtype.text, required)
else:
self.gen.logMsg('diag', 'type', typename, 'is self-referential')
# Tag enums used in defining this type, for example in
# <member><name>member</name>[<enum>MEMBER_SIZE</enum>]</member>
for subenum in typeinfo.elem.findall('.//enum'):
self.gen.logMsg('diag', 'markRequired: type requires dependent <enum>', subenum.text)
self.markEnumRequired(subenum.text, required)
# Tag type dependency in 'bitvalues' attributes as
# required. This ensures that the bit values for a flag
# are emitted
depType = typeinfo.elem.get('bitvalues')
if depType:
self.gen.logMsg('diag', 'Generating bitflag type',
depType, 'for type', typename)
self.markTypeRequired(depType, required)
group = self.lookupElementInfo(depType, self.groupdict)
if group is not None:
group.flagType = typeinfo
typeinfo.required = required
elif '.h' not in typename:
self.gen.logMsg('warn', 'type:', typename, 'IS NOT DEFINED')
def markEnumRequired(self, enumname, required):
"""Mark an enum as required or not.
- enumname - name of enum
- required - boolean (to tag features as required or not)"""
self.gen.logMsg('diag', 'tagging enum:', enumname, '-> required =', required)
enum = self.lookupElementInfo(enumname, self.enumdict)
if enum is not None:
# If the enum is part of a group, and is being removed, then
# look it up in that <group> tag and remove it there, so that it
# isn't visible to generators (which traverse the <group> tag
# elements themselves).
# This isn't the most robust way of doing this, since a removed
# enum that's later required again will no longer have a group
# element, but it makes the change non-intrusive on generator
# code.
if required is False:
groupName = enum.elem.get('extends')
if groupName is not None:
# Look up the Info with matching groupName
if groupName in self.groupdict:
gi = self.groupdict[groupName]
gienum = gi.elem.find("enum[@name='" + enumname + "']")
if gienum is not None:
# Remove copy of this enum from the group
gi.elem.remove(gienum)
else:
self.gen.logMsg('warn', 'Cannot remove enum',
enumname, 'not found in group',
groupName)
else:
self.gen.logMsg('warn', 'Cannot remove enum',
enumname, 'from nonexistent group',
groupName)
enum.required = required
# Tag enum dependencies in 'alias' attribute as required
depname = enum.elem.get('alias')
if depname:
self.gen.logMsg('diag', 'Generating dependent enum',
depname, 'for alias', enumname, 'required =', enum.required)
self.markEnumRequired(depname, required)
else:
self.gen.logMsg('warn', 'enum:', enumname, 'IS NOT DEFINED')
def markCmdRequired(self, cmdname, required):
"""Mark a command as required or not.
- cmdname - name of command
- required - boolean (to tag features as required or not)"""
self.gen.logMsg('diag', 'tagging command:', cmdname, '-> required =', required)
cmd = self.lookupElementInfo(cmdname, self.cmddict)
if cmd is not None:
cmd.required = required
# Tag command dependencies in 'alias' attribute as required
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depname = cmd.elem.get('alias')
if depname:
self.gen.logMsg('diag', 'Generating dependent command',
depname, 'for alias', cmdname)
self.markCmdRequired(depname, required)
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# Tag all parameter types of this command as required.
# This DOES NOT remove types of commands in a <remove>
# tag, because many other commands may use the same type.
# We could be more clever and reference count types,
# instead of using a boolean.
if required:
# Look for <type> in entire <command> tree,
# not just immediate children
for type_elem in cmd.elem.findall('.//type'):
self.gen.logMsg('diag', 'markRequired: command implicitly requires dependent type', type_elem.text)
self.markTypeRequired(type_elem.text, required)
else:
self.gen.logMsg('warn', 'command:', cmdname, 'IS NOT DEFINED')
def markRequired(self, featurename, feature, required):
"""Require or remove features specified in the Element.
- featurename - name of the feature
- feature - Element for `<require>` or `<remove>` tag
- required - boolean (to tag features as required or not)"""
self.gen.logMsg('diag', 'markRequired (feature = <too long to print>, required =', required, ')')
# Loop over types, enums, and commands in the tag
# @@ It would be possible to respect 'api' and 'profile' attributes
# in individual features, but that's not done yet.
for typeElem in feature.findall('type'):
self.markTypeRequired(typeElem.get('name'), required)
for enumElem in feature.findall('enum'):
self.markEnumRequired(enumElem.get('name'), required)
for cmdElem in feature.findall('command'):
self.markCmdRequired(cmdElem.get('name'), required)
# Extensions may need to extend existing commands or other items in the future.
# So, look for extend tags.
for extendElem in feature.findall('extend'):
extendType = extendElem.get('type')
if extendType == 'command':
commandName = extendElem.get('name')
successExtends = extendElem.get('successcodes')
if successExtends is not None:
for success in successExtends.split(','):
self.commandextensionsuccesses.append(self.commandextensiontuple(command=commandName,
value=success,
extension=featurename))
errorExtends = extendElem.get('errorcodes')
if errorExtends is not None:
for error in errorExtends.split(','):
self.commandextensionerrors.append(self.commandextensiontuple(command=commandName,
value=error,
extension=featurename))
else:
self.gen.logMsg('warn', 'extend type:', extendType, 'IS NOT SUPPORTED')
def getAlias(self, elem, dict):
"""Check for an alias in the same require block.
- elem - Element to check for an alias"""
# Try to find an alias
alias = elem.get('alias')
if alias is None:
name = elem.get('name')
typeinfo = self.lookupElementInfo(name, dict)
alias = typeinfo.elem.get('alias')
return alias
def checkForCorrectionAliases(self, alias, require, tag):
"""Check for an alias in the same require block.
- alias - String name of the alias
- require - `<require>` block from the registry
- tag - tag to look for in the require block"""
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if alias and require.findall(tag + "[@name='" + alias + "']"):
return True
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return False
def fillFeatureDictionary(self, interface, featurename, api, profile):
"""Capture added interfaces for a `<version>` or `<extension>`.
- interface - Element for `<version>` or `<extension>`, containing
`<require>` and `<remove>` tags
- featurename - name of the feature
- api - string specifying API name being generated
- profile - string specifying API profile being generated"""
# Explicitly initialize known types - errors for unhandled categories
self.gen.featureDictionary[featurename] = {
"enumconstant": {},
"command": {},
"enum": {},
"struct": {},
"handle": {},
"basetype": {},
"include": {},
"define": {},
"bitmask": {},
"union": {},
"funcpointer": {},
}
# <require> marks things that are required by this version/profile
for require in interface.findall('require'):
if matchAPIProfile(api, profile, require):
# Determine the required extension or version needed for a require block
# Assumes that only one of these is specified
required_key = require.get('feature')
if required_key is None:
required_key = require.get('extension')
# Loop over types, enums, and commands in the tag
for typeElem in require.findall('type'):
typename = typeElem.get('name')
typeinfo = self.lookupElementInfo(typename, self.typedict)
if typeinfo:
# Remove aliases in the same extension/feature; these are always added as a correction. Don't need the original to be visible.
alias = self.getAlias(typeElem, self.typedict)
if not self.checkForCorrectionAliases(alias, require, 'type'):
# Resolve the type info to the actual type, so we get an accurate read for 'structextends'
while alias:
typeinfo = self.lookupElementInfo(alias, self.typedict)
alias = typeinfo.elem.get('alias')
typecat = typeinfo.elem.get('category')
typeextends = typeinfo.elem.get('structextends')
if not required_key in self.gen.featureDictionary[featurename][typecat]:
self.gen.featureDictionary[featurename][typecat][required_key] = {}
if not typeextends in self.gen.featureDictionary[featurename][typecat][required_key]:
self.gen.featureDictionary[featurename][typecat][required_key][typeextends] = []
self.gen.featureDictionary[featurename][typecat][required_key][typeextends].append(typename)
for enumElem in require.findall('enum'):
enumname = enumElem.get('name')
typeinfo = self.lookupElementInfo(enumname, self.enumdict)
# Remove aliases in the same extension/feature; these are always added as a correction. Don't need the original to be visible.
alias = self.getAlias(enumElem, self.enumdict)
if not self.checkForCorrectionAliases(alias, require, 'enum'):
enumextends = enumElem.get('extends')
if not required_key in self.gen.featureDictionary[featurename]['enumconstant']:
self.gen.featureDictionary[featurename]['enumconstant'][required_key] = {}
if not enumextends in self.gen.featureDictionary[featurename]['enumconstant'][required_key]:
self.gen.featureDictionary[featurename]['enumconstant'][required_key][enumextends] = []
self.gen.featureDictionary[featurename]['enumconstant'][required_key][enumextends].append(enumname)
for cmdElem in require.findall('command'):
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# Remove aliases in the same extension/feature; these are always added as a correction. Don't need the original to be visible.
alias = self.getAlias(cmdElem, self.cmddict)
if not self.checkForCorrectionAliases(alias, require, 'command'):
if not required_key in self.gen.featureDictionary[featurename]['command']:
self.gen.featureDictionary[featurename]['command'][required_key] = []
self.gen.featureDictionary[featurename]['command'][required_key].append(cmdElem.get('name'))
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def requireAndRemoveFeatures(self, interface, featurename, api, profile):
"""Process `<require>` and `<remove>` tags for a `<version>` or `<extension>`.
- interface - Element for `<version>` or `<extension>`, containing
`<require>` and `<remove>` tags
- featurename - name of the feature
- api - string specifying API name being generated
- profile - string specifying API profile being generated"""
# <require> marks things that are required by this version/profile
for feature in interface.findall('require'):
if matchAPIProfile(api, profile, feature):
self.markRequired(featurename, feature, True)
# <remove> marks things that are removed by this version/profile
for feature in interface.findall('remove'):
if matchAPIProfile(api, profile, feature):
self.markRequired(featurename, feature, False)
def assignAdditionalValidity(self, interface, api, profile):
# Loop over all usage inside all <require> tags.
for feature in interface.findall('require'):
if matchAPIProfile(api, profile, feature):
for v in feature.findall('usage'):
if v.get('command'):
self.cmddict[v.get('command')].additionalValidity.append(copy.deepcopy(v))
if v.get('struct'):
self.typedict[v.get('struct')].additionalValidity.append(copy.deepcopy(v))
# Loop over all usage inside all <remove> tags.
for feature in interface.findall('remove'):
if matchAPIProfile(api, profile, feature):
for v in feature.findall('usage'):
if v.get('command'):
self.cmddict[v.get('command')].removedValidity.append(copy.deepcopy(v))
if v.get('struct'):
self.typedict[v.get('struct')].removedValidity.append(copy.deepcopy(v))
def generateFeature(self, fname, ftype, dictionary):
"""Generate a single type / enum group / enum / command,
and all its dependencies as needed.
- fname - name of feature (`<type>`/`<enum>`/`<command>`)
- ftype - type of feature, 'type' | 'enum' | 'command'
- dictionary - of *Info objects - self.{type|enum|cmd}dict"""
self.gen.logMsg('diag', 'generateFeature: generating', ftype, fname)
f = self.lookupElementInfo(fname, dictionary)
if f is None:
# No such feature. This is an error, but reported earlier
self.gen.logMsg('diag', 'No entry found for feature', fname,
'returning!')
return
# If feature isn't required, or has already been declared, return
if not f.required:
self.gen.logMsg('diag', 'Skipping', ftype, fname, '(not required)')
return
if f.declared:
self.gen.logMsg('diag', 'Skipping', ftype, fname, '(already declared)')
return
# Always mark feature declared, as though actually emitted
f.declared = True
# Determine if this is an alias, and of what, if so
alias = f.elem.get('alias')
if alias:
self.gen.logMsg('diag', fname, 'is an alias of', alias)
# Pull in dependent declaration(s) of the feature.
# For types, there may be one type in the 'requires' attribute of
# the element, one in the 'alias' attribute, and many in
# embedded <type> and <enum> tags within the element.
# For commands, there may be many in <type> tags within the element.
# For enums, no dependencies are allowed (though perhaps if you
# have a uint64 enum, it should require that type).
genProc = None
followupFeature = None
if ftype == 'type':
genProc = self.gen.genType
# Generate type dependencies in 'alias' and 'requires' attributes
if alias:
self.generateFeature(alias, 'type', self.typedict)
requires = f.elem.get('requires')
if requires:
self.gen.logMsg('diag', 'Generating required dependent type',
requires)
self.generateFeature(requires, 'type', self.typedict)
# Generate types used in defining this type (e.g. in nested
# <type> tags)
# Look for <type> in entire <command> tree,
# not just immediate children
for subtype in f.elem.findall('.//type'):
self.gen.logMsg('diag', 'Generating required dependent <type>',
subtype.text)
self.generateFeature(subtype.text, 'type', self.typedict)
# Generate enums used in defining this type, for example in
# <member><name>member</name>[<enum>MEMBER_SIZE</enum>]</member>
for subtype in f.elem.findall('.//enum'):
self.gen.logMsg('diag', 'Generating required dependent <enum>',
subtype.text)
self.generateFeature(subtype.text, 'enum', self.enumdict)
# If the type is an enum group, look up the corresponding
# group in the group dictionary and generate that instead.
if f.elem.get('category') == 'enum':
self.gen.logMsg('diag', 'Type', fname, 'is an enum group, so generate that instead')
group = self.lookupElementInfo(fname, self.groupdict)
if alias is not None:
# An alias of another group name.
# Pass to genGroup with 'alias' parameter = aliased name
self.gen.logMsg('diag', 'Generating alias', fname,
'for enumerated type', alias)
# Now, pass the *aliased* GroupInfo to the genGroup, but
# with an additional parameter which is the alias name.
genProc = self.gen.genGroup
f = self.lookupElementInfo(alias, self.groupdict)
elif group is None:
self.gen.logMsg('warn', 'Skipping enum type', fname,
': No matching enumerant group')
return
else:
genProc = self.gen.genGroup
f = group
# @ The enum group is not ready for generation. At this
# @ point, it contains all <enum> tags injected by
# @ <extension> tags without any verification of whether
# @ they're required or not. It may also contain
# @ duplicates injected by multiple consistent
# @ definitions of an <enum>.
# @ Pass over each enum, marking its enumdict[] entry as
# @ required or not. Mark aliases of enums as required,
# @ too.
enums = group.elem.findall('enum')
self.gen.logMsg('diag', 'generateFeature: checking enums for group', fname)
# Check for required enums, including aliases
# LATER - Check for, report, and remove duplicates?
enumAliases = []
for elem in enums:
name = elem.get('name')
required = False
extname = elem.get('extname')
version = elem.get('version')
if extname is not None:
# 'supported' attribute was injected when the <enum> element was
# moved into the <enums> group in Registry.parseTree()
if self.genOpts.defaultExtensions == elem.get('supported'):
required = True
elif re.match(self.genOpts.addExtensions, extname) is not None:
required = True
elif version is not None:
required = re.match(self.genOpts.emitversions, version) is not None
else:
required = True
self.gen.logMsg('diag', '* required =', required, 'for', name)
if required:
# Mark this element as required (in the element, not the EnumInfo)
elem.set('required', 'true')
# If it's an alias, track that for later use
enumAlias = elem.get('alias')
if enumAlias:
enumAliases.append(enumAlias)
for elem in enums:
name = elem.get('name')
if name in enumAliases:
elem.set('required', 'true')
self.gen.logMsg('diag', '* also need to require alias', name)
if f.elem.get('category') == 'bitmask':
followupFeature = f.elem.get('bitvalues')
elif ftype == 'command':
# Generate command dependencies in 'alias' attribute
if alias:
self.generateFeature(alias, 'command', self.cmddict)
genProc = self.gen.genCmd
for type_elem in f.elem.findall('.//type'):
depname = type_elem.text
self.gen.logMsg('diag', 'Generating required parameter type',
depname)
self.generateFeature(depname, 'type', self.typedict)
elif ftype == 'enum':
# Generate enum dependencies in 'alias' attribute
if alias:
self.generateFeature(alias, 'enum', self.enumdict)
genProc = self.gen.genEnum
# Actually generate the type only if emitting declarations
if self.emitFeatures:
self.gen.logMsg('diag', 'Emitting', ftype, 'decl for', fname)
genProc(f, fname, alias)
else:
self.gen.logMsg('diag', 'Skipping', ftype, fname,
'(should not be emitted)')
if followupFeature:
self.gen.logMsg('diag', 'Generating required bitvalues <enum>',
followupFeature)
self.generateFeature(followupFeature, "type", self.typedict)
def generateRequiredInterface(self, interface):
"""Generate all interfaces required by an API version or extension.
- interface - Element for `<version>` or `<extension>`"""
# Loop over all features inside all <require> tags.
for features in interface.findall('require'):
for t in features.findall('type'):
self.generateFeature(t.get('name'), 'type', self.typedict)
for e in features.findall('enum'):
# If this is an enum extending an enumerated type, don't
# generate it - this has already been done in reg.parseTree,
# by copying this element into the enumerated type.
enumextends = e.get('extends')
if not enumextends:
self.generateFeature(e.get('name'), 'enum', self.enumdict)
for c in features.findall('command'):
self.generateFeature(c.get('name'), 'command', self.cmddict)
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def generateSpirv(self, spirv, dictionary):
if spirv is None:
self.gen.logMsg('diag', 'No entry found for element', name,
'returning!')
return
name = spirv.elem.get('name')
# No known alias for spirv elements
alias = None
if spirv.emit:
genProc = self.gen.genSpirv
genProc(spirv, name, alias)
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def apiGen(self):
"""Generate interface for specified versions using the current
generator and generator options"""
self.gen.logMsg('diag', '*******************************************')
self.gen.logMsg('diag', ' Registry.apiGen file:', self.genOpts.filename,
'api:', self.genOpts.apiname,
'profile:', self.genOpts.profile)
self.gen.logMsg('diag', '*******************************************')
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# Reset required/declared flags for all features
self.apiReset()
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# Compile regexps used to select versions & extensions
regVersions = re.compile(self.genOpts.versions)
regEmitVersions = re.compile(self.genOpts.emitversions)
regAddExtensions = re.compile(self.genOpts.addExtensions)
regRemoveExtensions = re.compile(self.genOpts.removeExtensions)
regEmitExtensions = re.compile(self.genOpts.emitExtensions)
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regEmitSpirv = re.compile(self.genOpts.emitSpirv)
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# Get all matching API feature names & add to list of FeatureInfo
# Note we used to select on feature version attributes, not names.
features = []
apiMatch = False
for key in self.apidict:
fi = self.apidict[key]
api = fi.elem.get('api')
if apiNameMatch(self.genOpts.apiname, api):
apiMatch = True
if regVersions.match(fi.name):
# Matches API & version #s being generated. Mark for
# emission and add to the features[] list .
# @@ Could use 'declared' instead of 'emit'?
fi.emit = (regEmitVersions.match(fi.name) is not None)
features.append(fi)
if not fi.emit:
self.gen.logMsg('diag', 'NOT tagging feature api =', api,
'name =', fi.name, 'version =', fi.version,
'for emission (does not match emitversions pattern)')
else:
self.gen.logMsg('diag', 'Including feature api =', api,
'name =', fi.name, 'version =', fi.version,
'for emission (matches emitversions pattern)')
else:
self.gen.logMsg('diag', 'NOT including feature api =', api,
'name =', fi.name, 'version =', fi.version,
'(does not match requested versions)')
else:
self.gen.logMsg('diag', 'NOT including feature api =', api,
'name =', fi.name,
'(does not match requested API)')
if not apiMatch:
self.gen.logMsg('warn', 'No matching API versions found!')
# Get all matching extensions, in order by their extension number,
# and add to the list of features.
# Start with extensions tagged with 'api' pattern matching the API
# being generated. Add extensions matching the pattern specified in
# regExtensions, then remove extensions matching the pattern
# specified in regRemoveExtensions
for (extName, ei) in sorted(self.extdict.items(), key=lambda x: x[1].number if x[1].number is not None else '0'):
extName = ei.name
include = False
# Include extension if defaultExtensions is not None and is
# exactly matched by the 'supported' attribute.
if apiNameMatch(self.genOpts.defaultExtensions,
ei.elem.get('supported')):
self.gen.logMsg('diag', 'Including extension',
extName, "(defaultExtensions matches the 'supported' attribute)")
include = True
# Include additional extensions if the extension name matches
# the regexp specified in the generator options. This allows
# forcing extensions into an interface even if they're not
# tagged appropriately in the registry.
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# However we still respect the 'supported' attribute.
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if regAddExtensions.match(extName) is not None:
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if not apiNameMatch(self.genOpts.apiname, ei.elem.get('supported')):
self.gen.logMsg('diag', 'NOT including extension',
extName, '(matches explicitly requested, but does not match the \'supported\' attribute)')
include = False
else:
self.gen.logMsg('diag', 'Including extension',
extName, '(matches explicitly requested extensions to add)')
include = True
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# Remove extensions if the name matches the regexp specified
# in generator options. This allows forcing removal of
# extensions from an interface even if they're tagged that
# way in the registry.
if regRemoveExtensions.match(extName) is not None:
self.gen.logMsg('diag', 'Removing extension',
extName, '(matches explicitly requested extensions to remove)')
include = False
# If the extension is to be included, add it to the
# extension features list.
if include:
ei.emit = (regEmitExtensions.match(extName) is not None)
features.append(ei)
if not ei.emit:
self.gen.logMsg('diag', 'NOT tagging extension',
extName,
'for emission (does not match emitextensions pattern)')
# Hack - can be removed when validity generator goes away
# (Jon) I'm not sure what this does, or if it should respect
# the ei.emit flag above.
self.requiredextensions.append(extName)
else:
self.gen.logMsg('diag', 'NOT including extension',
extName, '(does not match api attribute or explicitly requested extensions)')
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# Add all spirv elements to list
# generators decide to emit them all or not
# Currently no filtering as no client of these elements needs filtering
spirvexts = []
for key in self.spirvextdict:
si = self.spirvextdict[key]
si.emit = (regEmitSpirv.match(key) is not None)
spirvexts.append(si)
spirvcaps = []
for key in self.spirvcapdict:
si = self.spirvcapdict[key]
si.emit = (regEmitSpirv.match(key) is not None)
spirvcaps.append(si)
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# Sort the features list, if a sort procedure is defined
if self.genOpts.sortProcedure:
self.genOpts.sortProcedure(features)
# print('sortProcedure ->', [f.name for f in features])
# Pass 1: loop over requested API versions and extensions tagging
# types/commands/features as required (in an <require> block) or no
# longer required (in an <remove> block). It is possible to remove
# a feature in one version and restore it later by requiring it in
# a later version.
# If a profile other than 'None' is being generated, it must
# match the profile attribute (if any) of the <require> and
# <remove> tags.
self.gen.logMsg('diag', 'PASS 1: TAG FEATURES')
for f in features:
self.gen.logMsg('diag', 'PASS 1: Tagging required and removed features for',
f.name)
self.fillFeatureDictionary(f.elem, f.name, self.genOpts.apiname, self.genOpts.profile)
self.requireAndRemoveFeatures(f.elem, f.name, self.genOpts.apiname, self.genOpts.profile)
self.assignAdditionalValidity(f.elem, self.genOpts.apiname, self.genOpts.profile)
# Pass 2: loop over specified API versions and extensions printing
# declarations for required things which haven't already been
# generated.
self.gen.logMsg('diag', 'PASS 2: GENERATE INTERFACES FOR FEATURES')
self.gen.beginFile(self.genOpts)
for f in features:
self.gen.logMsg('diag', 'PASS 2: Generating interface for',
f.name)
emit = self.emitFeatures = f.emit
if not emit:
self.gen.logMsg('diag', 'PASS 2: NOT declaring feature',
f.elem.get('name'), 'because it is not tagged for emission')
# Generate the interface (or just tag its elements as having been
# emitted, if they haven't been).
self.gen.beginFeature(f.elem, emit)
self.generateRequiredInterface(f.elem)
self.gen.endFeature()
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# Generate spirv elements
for s in spirvexts:
self.generateSpirv(s, self.spirvextdict)
for s in spirvcaps:
self.generateSpirv(s, self.spirvcapdict)
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self.gen.endFile()
def apiReset(self):
"""Reset type/enum/command dictionaries before generating another API.
Use between apiGen() calls to reset internal state."""
for datatype in self.typedict:
self.typedict[datatype].resetState()
for enum in self.enumdict:
self.enumdict[enum].resetState()
for cmd in self.cmddict:
self.cmddict[cmd].resetState()
for cmd in self.apidict:
self.apidict[cmd].resetState()
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def validateGroups(self):
"""Validate `group=` attributes on `<param>` and `<proto>` tags.
Check that `group=` attributes match actual groups"""
# Keep track of group names not in <group> tags
badGroup = {}
self.gen.logMsg('diag', 'VALIDATING GROUP ATTRIBUTES')
for cmd in self.reg.findall('commands/command'):
proto = cmd.find('proto')
# funcname = cmd.find('proto/name').text
group = proto.get('group')
if group is not None and group not in self.groupdict:
# self.gen.logMsg('diag', '*** Command ', funcname, ' has UNKNOWN return group ', group)
if group not in badGroup:
badGroup[group] = 1
else:
badGroup[group] = badGroup[group] + 1
for param in cmd.findall('param'):
pname = param.find('name')
if pname is not None:
pname = pname.text
else:
pname = param.get('name')
group = param.get('group')
if group is not None and group not in self.groupdict:
# self.gen.logMsg('diag', '*** Command ', funcname, ' param ', pname, ' has UNKNOWN group ', group)
if group not in badGroup:
badGroup[group] = 1
else:
badGroup[group] = badGroup[group] + 1
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if badGroup:
self.gen.logMsg('diag', 'SUMMARY OF UNRECOGNIZED GROUPS')
for key in sorted(badGroup.keys()):
self.gen.logMsg('diag', ' ', key, ' occurred ', badGroup[key], ' times')