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Vulkan-Docs/src/spec/reg.py
Jon Leech 712755f688 Change log for July 15, 2017 Vulkan 1.0.55 spec update: 
* Bump API patch number and header version number to 55 for this update.

Github Issues:

  * Removed unintended optional parameter in +vk.xml+ from the
    pname:pWaitSemaphores member of slink:VkPresentInfoKHR, which resulted
    in the generation of an incorrect implicit valid usage clause allowing
    pname:pWaitSemaphores to be NULL even when pname:waitSemaphoreCount is
    non-zero (public issue 491).
  * Add missing attribute to +vk.xml+ documenting that
    slink:VkSwapchainCounterCreateInfoEXT extends
    slink:VkSwapchainCreateInfo (public issue 510).
  * Add const qualifier for some `VK_EXT_debug_market` extension command
    parameters that were missing it (public issue 513).
  * Fix definition of q and level~base~ in
    <<textures-image-level-selection,Image Level(s) Selection>> (public
    issue 515).
  * Clarify lifetime requirement for slink:VkRenderPass objects used in
    object creation (public issue 516).
  * Fix link to floating/normalized fixed-point conversion from
    <<interfaces-fragmentoutput,Fragment Output Interface>> (public issue
    521).

Internal Issues:

  * Update the style guide to include the general structure of a Vulkan
    command name, the specific rule for using "`Get`" vs. "`Enumerate`" in
    names, and a table of verbs commonly used in command names (spinoff of
    internal issue 753).
  * Clarified the behavior of automatic layout transitions in case of
    attachment views that are 2D or 2D array views of 3D images. In
    addition, restructured the valid usage clauses corresponding to the
    members of the slink:VkImageSubresourceRange structure and added missing
    valid usage clauses for its pname:baseMipLevel and pname:baseArrayLayer
    members (internal issues 803, 849).
  * Modify `GL_KHR_vulkan_glsl` specification to allow explicit std430 on a
    push_constant declaration (internal issue 919).

Other Commits:

  * Modify <<synchronization-framebuffer-regions, Framebuffer Region
    Dependencies>> to use synchronization scope terminology.
  * Add ename:VK_COLOR_SPACE_EXTENDED_SRGB_NONLINEAR_EXT to the
    `VK_EXT_swapchain_colorspace` extension.
  * Replace XML comments with `comment` attributes and/or tags, to enable
    tools which transform the XML without loss of information.
  * Replace `validextensionstructs` with `structextends`, which is tagged in
    the child structure instead of the parent. This makes it slightly
    simpler to add new structs to the XML, causes fewer merge conflicts, and
    the information is kept localized to the extension structures where it
    belongs. The old `validextensionstructs` attributes will be retained
    until we're certain this doesn't cause problems with known consumers of
    +vk.xml+.
2017-07-16 17:20:08 -07:00

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#!/usr/bin/python3 -i
#
# Copyright (c) 2013-2017 The Khronos Group Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import io,os,re,string,sys,copy
import xml.etree.ElementTree as etree
from collections import defaultdict
# matchAPIProfile - returns 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)".
def matchAPIProfile(api, profile, elem):
"""Match a requested API & profile name to a api & profile attributes of an Element"""
match = True
# Match 'api', if present
if ('api' in elem.attrib):
if (api == None):
raise UserWarning("No API requested, but 'api' attribute is present with value '" +
elem.get('api') + "'")
elif (api != elem.get('api')):
# Requested API doesn't match attribute
return False
if ('profile' in elem.attrib):
if (profile == None):
raise UserWarning("No profile requested, but 'profile' attribute is present with value '" +
elem.get('profile') + "'")
elif (profile != elem.get('profile')):
# Requested profile doesn't match attribute
return False
return True
# BaseInfo - base class for information about a registry feature
# (type/group/enum/command/API/extension).
# required - should this feature be defined during header generation
# (has it been removed by a profile or version)?
# declared - has this feature been defined already?
# elem - etree Element for this feature
# resetState() - reset required/declared to initial values. Used
# prior to generating a new API interface.
class BaseInfo:
"""Represents the state of a registry feature, used during API generation"""
def __init__(self, elem):
self.required = False
self.declared = False
self.elem = elem
def resetState(self):
self.required = False
self.declared = False
# TypeInfo - registry information about a type. No additional state
# beyond BaseInfo is required.
class TypeInfo(BaseInfo):
"""Represents the state of a registry type"""
def __init__(self, elem):
BaseInfo.__init__(self, elem)
self.additionalValidity = []
self.removedValidity = []
def resetState(self):
BaseInfo.resetState(self)
self.additionalValidity = []
self.removedValidity = []
# GroupInfo - registry information about a group of related enums
# in an <enums> block, generally corresponding to a C "enum" type.
class GroupInfo(BaseInfo):
"""Represents the state of a registry <enums> group"""
def __init__(self, elem):
BaseInfo.__init__(self, elem)
# EnumInfo - registry information about an enum
# type - numeric type of the value of the <enum> tag
# ( '' for GLint, 'u' for GLuint, 'ull' for GLuint64 )
class EnumInfo(BaseInfo):
"""Represents the state of a registry enum"""
def __init__(self, elem):
BaseInfo.__init__(self, elem)
self.type = elem.get('type')
if (self.type == None):
self.type = ''
# CmdInfo - registry information about a command
class CmdInfo(BaseInfo):
"""Represents the state of a registry command"""
def __init__(self, elem):
BaseInfo.__init__(self, elem)
self.additionalValidity = []
self.removedValidity = []
def resetState(self):
BaseInfo.resetState(self)
self.additionalValidity = []
self.removedValidity = []
# FeatureInfo - registry information about an API <feature>
# or <extension>
# name - feature name string (e.g. 'VK_KHR_surface')
# version - feature version number (e.g. 1.2). <extension>
# features are unversioned and assigned version number 0.
# ** This is confusingly taken from the 'number' attribute of <feature>.
# Needs fixing.
# number - extension number, used for ordering and for
# assigning enumerant offsets. <feature> features do
# not have extension numbers and are assigned number 0.
# category - category, e.g. VERSION or khr/vendor tag
# emit - has this feature been defined already?
class FeatureInfo(BaseInfo):
"""Represents the state of an API feature (version/extension)"""
def __init__(self, elem):
BaseInfo.__init__(self, elem)
self.name = elem.get('name')
# Determine element category (vendor). Only works
# for <extension> elements.
if (elem.tag == 'feature'):
self.category = 'VERSION'
self.version = elem.get('number')
self.number = "0"
self.supported = None
else:
self.category = self.name.split('_', 2)[1]
self.version = "0"
self.number = elem.get('number')
self.supported = elem.get('supported')
self.emit = False
from generator import write, GeneratorOptions, OutputGenerator
# Registry - object representing an API registry, loaded from an XML file
# Members
# tree - ElementTree containing the root <registry>
# typedict - dictionary of TypeInfo objects keyed by type name
# groupdict - dictionary of GroupInfo objects keyed by group name
# enumdict - dictionary of EnumInfo objects keyed by enum name
# cmddict - dictionary of CmdInfo objects keyed by command name
# apidict - dictionary of <api> Elements keyed by API name
# extensions - list of <extension> Elements
# extdict - dictionary of <extension> Elements keyed by extension name
# gen - OutputGenerator object used to write headers / messages
# genOpts - GeneratorOptions object used to control which
# fetures to write and how to format them
# emitFeatures - True to actually emit features for a version / extension,
# or False to just treat them as emitted
# Public methods
# loadElementTree(etree) - load registry from specified ElementTree
# loadFile(filename) - load registry from XML file
# setGenerator(gen) - OutputGenerator to use
# parseTree() - parse the registry once loaded & create dictionaries
# dumpReg(maxlen, filehandle) - diagnostic to dump the dictionaries
# to specified file handle (default stdout). Truncates type /
# enum / command elements to maxlen characters (default 80)
# generator(g) - specify the output generator object
# apiGen(apiname, genOpts) - generate API headers for the API type
# and profile specified in genOpts, but only for the versions and
# extensions specified there.
# apiReset() - call between calls to apiGen() to reset internal state
# Private methods
# addElementInfo(elem,info,infoName,dictionary) - add feature info to dict
# lookupElementInfo(fname,dictionary) - lookup feature info in dict
class Registry:
"""Represents an API registry loaded from XML"""
def __init__(self):
self.tree = None
self.typedict = {}
self.groupdict = {}
self.enumdict = {}
self.cmddict = {}
self.apidict = {}
self.extensions = []
self.requiredextensions = [] # Hack - can remove it after validity generator goes away
self.validextensionstructs = defaultdict(list)
self.extdict = {}
# A default output generator, so commands prior to apiGen can report
# errors via the generator object.
self.gen = OutputGenerator()
self.genOpts = None
self.emitFeatures = False
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.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)
# addElementInfo - add information about an element to the
# corresponding dictionary
# elem - <type>/<enums>/<enum>/<command>/<feature>/<extension> Element
# info - corresponding {Type|Group|Enum|Cmd|Feature}Info object
# infoName - 'type' / 'group' / 'enum' / 'command' / 'feature' / 'extension'
# dictionary - self.{type|group|enum|cmd|api|ext}dict
# 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
def addElementInfo(self, elem, info, infoName, dictionary):
if ('api' in elem.attrib):
key = (elem.get('name'),elem.get('api'))
else:
key = elem.get('name')
if key in dictionary:
self.gen.logMsg('warn', '*** Attempt to redefine',
infoName, 'with key:', key)
else:
dictionary[key] = info
#
# lookupElementInfo - find a {Type|Enum|Cmd}Info object by name.
# If an object qualified by API name exists, use that.
# fname - name of type / enum / command
# dictionary - self.{type|enum|cmd}dict
def lookupElementInfo(self, fname, dictionary):
key = (fname, self.genOpts.apiname)
if (key in dictionary):
# self.gen.logMsg('diag', 'Found API-specific element for feature', fname)
return dictionary[key]
elif (fname in dictionary):
# self.gen.logMsg('diag', 'Found generic element for feature', fname)
return dictionary[fname]
else:
return None
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 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.get('name') == None):
type.attrib['name'] = type.find('name').text
self.addElementInfo(type, TypeInfo(type), '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') != 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 = {}
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.
if (cmd.get('name') == None):
cmd.attrib['name'] = cmd.find('proto/name').text
ci = CmdInfo(cmd)
self.addElementInfo(cmd, ci, 'command', self.cmddict)
#
# 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)
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.
# 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
# *removed* from the <require> element it is introduced in.
# Not doing this will cause spurious genEnum()
# calls to be made in output generation, and it's easier
# to handle here than in genEnum().
#
# In lxml.etree, an Element can have only one parent, so the
# append() operation also removes the element. But in Python's
# ElementTree package, an Element can have multiple parents. So
# it must be explicitly removed from the <require> tag, leading
# to the nested loop traversal of <require>/<enum> elements
# below.
#
# This code also adds a 'extnumber' attribute containing the
# extension number, used for enumerant value calculation.
#
# 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.
#
# Something like this will need to be done for 'feature's up
# above, if we use the same mechanism for adding to the core
# API in 1.1.
#
for elem in feature.findall('require'):
for enum in elem.findall('enum'):
addEnumInfo = False
groupName = enum.get('extends')
if (groupName != None):
# self.gen.logMsg('diag', '*** Found extension enum',
# enum.get('name'))
# Add extension number attribute to the <enum> element
enum.attrib['extnumber'] = featureInfo.number
enum.attrib['extname'] = featureInfo.name
enum.attrib['supported'] = featureInfo.supported
# Look up the GroupInfo with matching groupName
if (groupName in self.groupdict.keys()):
# self.gen.logMsg('diag', '*** Matching group',
# groupName, 'found, adding element...')
gi = self.groupdict[groupName]
gi.elem.append(enum)
# Remove element from parent <require> tag
# This should be a no-op in lxml.etree
elem.remove(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')):
# 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
for type in self.reg.findall('types/type'):
parentStructs = type.get('structextends')
if (parentStructs != None):
for parent in parentStructs.split(','):
# self.gen.logMsg('diag', type.get('name'), 'extends', parent)
self.validextensionstructs[parent].append(type.get('name'))
# Sort the lists so they don't depend on the XML order
for parent in self.validextensionstructs:
self.validextensionstructs[parent].sort()
def dumpReg(self, maxlen = 40, filehandle = sys.stdout):
"""Dump all the dictionaries constructed from the Registry object"""
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)
# write('***************************************', file=filehandle)
# write(' ** Dumping XML ElementTree **', file=filehandle)
# write('***************************************', file=filehandle)
# write(etree.tostring(self.tree.getroot(),pretty_print=True), file=filehandle)
#
# typename - name of type
# required - boolean (to tag features as required or not)
def markTypeRequired(self, typename, required):
"""Require (along with its dependencies) or remove (but not its dependencies) a type"""
self.gen.logMsg('diag', '*** tagging type:', typename, '-> required =', required)
# Get TypeInfo object for <type> tag corresponding to typename
type = self.lookupElementInfo(typename, self.typedict)
if (type != None):
if (required):
# Tag type dependencies in 'required' attributes as
# required. This DOES NOT un-tag dependencies in a <remove>
# tag. See comments in markRequired() below for the reason.
if ('requires' in type.elem.attrib):
depType = type.elem.get('requires')
self.gen.logMsg('diag', '*** Generating dependent type',
depType, 'for type', typename)
self.markTypeRequired(depType, required)
# 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 type.elem.findall('.//type'):
self.gen.logMsg('diag', '*** markRequired: type requires dependent <type>', subtype.text)
self.markTypeRequired(subtype.text, required)
# Tag enums used in defining this type, for example in
# <member><name>member</name>[<enum>MEMBER_SIZE</enum>]</member>
for subenum in type.elem.findall('.//enum'):
self.gen.logMsg('diag', '*** markRequired: type requires dependent <enum>', subenum.text)
self.markEnumRequired(subenum.text, required)
type.required = required
else:
self.gen.logMsg('warn', '*** type:', typename , 'IS NOT DEFINED')
#
# enumname - name of enum
# required - boolean (to tag features as required or not)
def markEnumRequired(self, enumname, required):
self.gen.logMsg('diag', '*** tagging enum:', enumname, '-> required =', required)
enum = self.lookupElementInfo(enumname, self.enumdict)
if (enum != None):
enum.required = required
else:
self.gen.logMsg('warn', '*** enum:', enumname , 'IS NOT DEFINED')
#
# features - Element for <require> or <remove> tag
# required - boolean (to tag features as required or not)
def markRequired(self, features, required):
"""Require or remove features specified in the Element"""
self.gen.logMsg('diag', '*** markRequired (features = <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 features.findall('type'):
self.markTypeRequired(typeElem.get('name'), required)
for enumElem in features.findall('enum'):
self.markEnumRequired(enumElem.get('name'), required)
for cmdElem in features.findall('command'):
name = cmdElem.get('name')
self.gen.logMsg('diag', '*** tagging command:', name, '-> required =', required)
cmd = self.lookupElementInfo(name, self.cmddict)
if (cmd != None):
cmd.required = required
# 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 in cmd.elem.findall('.//type'):
self.gen.logMsg('diag', '*** markRequired: command implicitly requires dependent type', type.text)
self.markTypeRequired(type.text, required)
else:
self.gen.logMsg('warn', '*** command:', name, 'IS NOT DEFINED')
#
# interface - Element for <version> or <extension>, containing
# <require> and <remove> tags
# api - string specifying API name being generated
# profile - string specifying API profile being generated
def requireAndRemoveFeatures(self, interface, api, profile):
"""Process <recquire> and <remove> tags for a <version> or <extension>"""
# <require> marks things that are required by this version/profile
for feature in interface.findall('require'):
if (matchAPIProfile(api, profile, feature)):
self.markRequired(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(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))
#
# generateFeature - 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
def generateFeature(self, fname, ftype, dictionary):
f = self.lookupElementInfo(fname, dictionary)
if (f == 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
#
# Pull in dependent declaration(s) of the feature.
# For types, there may be one type in the 'required' attribute of
# the element, as well as many in imbedded <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
if (ftype == 'type'):
genProc = self.gen.genType
if ('requires' in f.elem.attrib):
depname = f.elem.get('requires')
self.gen.logMsg('diag', '*** Generating required dependent type',
depname)
self.generateFeature(depname, 'type', self.typedict)
for subtype in f.elem.findall('.//type'):
self.gen.logMsg('diag', '*** Generating required dependent <type>',
subtype.text)
self.generateFeature(subtype.text, 'type', self.typedict)
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 (group == None):
# Unless this is tested for, it's probably fatal to call below
genProc = None
self.logMsg('warn', '*** NO MATCHING ENUM GROUP FOUND!!!')
else:
genProc = self.gen.genGroup
f = group
elif (ftype == 'command'):
genProc = self.gen.genCmd
for type in f.elem.findall('.//type'):
depname = type.text
self.gen.logMsg('diag', '*** Generating required parameter type',
depname)
self.generateFeature(depname, 'type', self.typedict)
elif (ftype == 'enum'):
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)
else:
self.gen.logMsg('diag', '*** Skipping', ftype, fname,
'(not emitting this feature)')
#
# generateRequiredInterface - generate all interfaces required
# by an API version or extension
# interface - Element for <version> or <extension>
def generateRequiredInterface(self, interface):
"""Generate required C interface for specified API version/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'):
self.generateFeature(e.get('name'), 'enum', self.enumdict)
for c in features.findall('command'):
self.generateFeature(c.get('name'), 'command', self.cmddict)
#
# apiGen(genOpts) - generate interface for specified versions
# genOpts - GeneratorOptions object with parameters used
# by the Generator object.
def apiGen(self, genOpts):
"""Generate interfaces for the specified API type and range of versions"""
#
self.gen.logMsg('diag', '*******************************************')
self.gen.logMsg('diag', ' Registry.apiGen file:', genOpts.filename,
'api:', genOpts.apiname,
'profile:', genOpts.profile)
self.gen.logMsg('diag', '*******************************************')
#
self.genOpts = genOpts
# Reset required/declared flags for all features
self.apiReset()
#
# 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)
#
# Get all matching API versions & add to list of FeatureInfo
features = []
apiMatch = False
for key in self.apidict:
fi = self.apidict[key]
api = fi.elem.get('api')
if (api == self.genOpts.apiname):
apiMatch = True
if (regVersions.match(fi.version)):
# 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.version) != 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', '*** 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):
extName = ei.name
include = False
#
# Include extension if defaultExtensions is not None and if the
# 'supported' attribute matches defaultExtensions. The regexp in
# 'supported' must exactly match defaultExtensions, so bracket
# it with ^(pat)$.
pat = '^(' + ei.elem.get('supported') + ')$'
if (self.genOpts.defaultExtensions and
re.match(pat, self.genOpts.defaultExtensions)):
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.
if (regAddExtensions.match(extName) != None):
self.gen.logMsg('diag', '*** Including extension',
extName, '(matches explicitly requested extensions to add)')
include = True
# 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) != 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 = True
features.append(ei)
# Hack - can be removed when validity generator goes away
self.requiredextensions.append(extName)
else:
self.gen.logMsg('diag', '*** NOT including extension',
extName, '(does not match api attribute or explicitly requested extensions)')
#
# Sort the extension features list, if a sort procedure is defined
if (self.genOpts.sortProcedure):
self.genOpts.sortProcedure(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.requireAndRemoveFeatures(f.elem, 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()
self.gen.endFile()
#
# apiReset - use between apiGen() calls to reset internal state
#
def apiReset(self):
"""Reset type/enum/command dictionaries before generating another API"""
for type in self.typedict:
self.typedict[type].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()
#
# validateGroups - check that group= attributes match actual groups
#
def validateGroups(self):
"""Validate group= attributes on <param> and <proto> tags"""
# 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
if ('group' in proto.attrib.keys()):
group = proto.get('group')
# self.gen.logMsg('diag', '*** Command ', funcname, ' has return group ', group)
if (group not in self.groupdict.keys()):
# self.gen.logMsg('diag', '*** Command ', funcname, ' has UNKNOWN return group ', group)
if (group not in badGroup.keys()):
badGroup[group] = 1
else:
badGroup[group] = badGroup[group] + 1
for param in cmd.findall('param'):
pname = param.find('name')
if (pname != None):
pname = pname.text
else:
pname = type.get('name')
if ('group' in param.attrib.keys()):
group = param.get('group')
if (group not in self.groupdict.keys()):
# self.gen.logMsg('diag', '*** Command ', funcname, ' param ', pname, ' has UNKNOWN group ', group)
if (group not in badGroup.keys()):
badGroup[group] = 1
else:
badGroup[group] = badGroup[group] + 1
if (len(badGroup.keys()) > 0):
self.gen.logMsg('diag', '*** SUMMARY OF UNRECOGNIZED GROUPS ***')
for key in sorted(badGroup.keys()):
self.gen.logMsg('diag', ' ', key, ' occurred ', badGroup[key], ' times')
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