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android / platform / external / vulkan-validation-layers / android-7.1.1_r31 / . / generator.py
blob: 8e4cebafa5bda35e19906c096b2a38204249c743 [file] [log] [blame]
#!/usr/bin/python3 -i
import os,re,sys
from collections import namedtuple
from lxml import etree
def write( *args, **kwargs ):
file = kwargs.pop('file',sys.stdout)
end = kwargs.pop( 'end','\n')
file.write( ' '.join([str(arg) for arg in args]) )
file.write( end )
# noneStr - returns string argument, or "" if argument is None.
# Used in converting lxml Elements into text.
# str - string to convert
def noneStr(str):
if (str):
return str
else:
return ""
# enquote - returns string argument with surrounding quotes,
# for serialization into Python code.
def enquote(str):
if (str):
return "'" + str + "'"
else:
return None
# Primary sort key for regSortFeatures.
# Sorts by category of the feature name string:
# Core API features (those defined with a <feature> tag)
# ARB/KHR/OES (Khronos extensions)
# other (EXT/vendor extensions)
# This will need changing for Vulkan!
def regSortCategoryKey(feature):
if (feature.elem.tag == 'feature'):
return 0
elif (feature.category == 'ARB' or
feature.category == 'KHR' or
feature.category == 'OES'):
return 1
else:
return 2
# Secondary sort key for regSortFeatures.
# Sorts by extension name.
def regSortNameKey(feature):
return feature.name
# Second sort key for regSortFeatures.
# Sorts by feature version. <extension> elements all have version number "0"
def regSortFeatureVersionKey(feature):
return float(feature.version)
# Tertiary sort key for regSortFeatures.
# Sorts by extension number. <feature> elements all have extension number 0.
def regSortExtensionNumberKey(feature):
return int(feature.number)
# regSortFeatures - default sort procedure for features.
# Sorts by primary key of feature category ('feature' or 'extension')
# then by version number (for features)
# then by extension number (for extensions)
def regSortFeatures(featureList):
featureList.sort(key = regSortExtensionNumberKey)
featureList.sort(key = regSortFeatureVersionKey)
featureList.sort(key = regSortCategoryKey)
# GeneratorOptions - base class for options used during header production
# These options are target language independent, and used by
# Registry.apiGen() and by base OutputGenerator objects.
#
# Members
# filename - name of file to generate, or None to write to stdout.
# apiname - string matching <api> 'apiname' attribute, e.g. 'gl'.
# profile - string specifying API profile , e.g. 'core', or None.
# versions - regex matching API versions to process interfaces for.
# Normally '.*' or '[0-9]\.[0-9]' to match all defined versions.
# emitversions - regex matching API versions to actually emit
# interfaces for (though all requested versions are considered
# when deciding which interfaces to generate). For GL 4.3 glext.h,
# this might be '1\.[2-5]|[2-4]\.[0-9]'.
# defaultExtensions - If not None, a string which must in its
# entirety match the pattern in the "supported" attribute of
# the <extension>. Defaults to None. Usually the same as apiname.
# addExtensions - regex matching names of additional extensions
# to include. Defaults to None.
# removeExtensions - regex matching names of extensions to
# remove (after defaultExtensions and addExtensions). Defaults
# to None.
# sortProcedure - takes a list of FeatureInfo objects and sorts
# them in place to a preferred order in the generated output.
# Default is core API versions, ARB/KHR/OES extensions, all
# other extensions, alphabetically within each group.
# The regex patterns can be None or empty, in which case they match
# nothing.
class GeneratorOptions:
"""Represents options during header production from an API registry"""
def __init__(self,
filename = None,
apiname = None,
profile = None,
versions = '.*',
emitversions = '.*',
defaultExtensions = None,
addExtensions = None,
removeExtensions = None,
sortProcedure = regSortFeatures):
self.filename = filename
self.apiname = apiname
self.profile = profile
self.versions = self.emptyRegex(versions)
self.emitversions = self.emptyRegex(emitversions)
self.defaultExtensions = defaultExtensions
self.addExtensions = self.emptyRegex(addExtensions)
self.removeExtensions = self.emptyRegex(removeExtensions)
self.sortProcedure = sortProcedure
#
# Substitute a regular expression which matches no version
# or extension names for None or the empty string.
def emptyRegex(self,pat):
if (pat == None or pat == ''):
return '_nomatch_^'
else:
return pat
# CGeneratorOptions - subclass of GeneratorOptions.
#
# Adds options used by COutputGenerator objects during C language header
# generation.
#
# Additional members
# prefixText - list of strings to prefix generated header with
# (usually a copyright statement + calling convention macros).
# protectFile - True if multiple inclusion protection should be
# generated (based on the filename) around the entire header.
# protectFeature - True if #ifndef..#endif protection should be
# generated around a feature interface in the header file.
# genFuncPointers - True if function pointer typedefs should be
# generated
# protectProto - If conditional protection should be generated
# around prototype declarations, set to either '#ifdef'
# to require opt-in (#ifdef protectProtoStr) or '#ifndef'
# to require opt-out (#ifndef protectProtoStr). Otherwise
# set to None.
# protectProtoStr - #ifdef/#ifndef symbol to use around prototype
# declarations, if protectProto is set
# apicall - string to use for the function declaration prefix,
# such as APICALL on Windows.
# apientry - string to use for the calling convention macro,
# in typedefs, such as APIENTRY.
# apientryp - string to use for the calling convention macro
# in function pointer typedefs, such as APIENTRYP.
# indentFuncProto - True if prototype declarations should put each
# parameter on a separate line
# indentFuncPointer - True if typedefed function pointers should put each
# parameter on a separate line
# alignFuncParam - if nonzero and parameters are being put on a
# separate line, align parameter names at the specified column
class CGeneratorOptions(GeneratorOptions):
"""Represents options during C interface generation for headers"""
def __init__(self,
filename = None,
apiname = None,
profile = None,
versions = '.*',
emitversions = '.*',
defaultExtensions = None,
addExtensions = None,
removeExtensions = None,
sortProcedure = regSortFeatures,
prefixText = "",
genFuncPointers = True,
protectFile = True,
protectFeature = True,
protectProto = None,
protectProtoStr = None,
apicall = '',
apientry = '',
apientryp = '',
indentFuncProto = True,
indentFuncPointer = False,
alignFuncParam = 0):
GeneratorOptions.__init__(self, filename, apiname, profile,
versions, emitversions, defaultExtensions,
addExtensions, removeExtensions, sortProcedure)
self.prefixText = prefixText
self.genFuncPointers = genFuncPointers
self.protectFile = protectFile
self.protectFeature = protectFeature
self.protectProto = protectProto
self.protectProtoStr = protectProtoStr
self.apicall = apicall
self.apientry = apientry
self.apientryp = apientryp
self.indentFuncProto = indentFuncProto
self.indentFuncPointer = indentFuncPointer
self.alignFuncParam = alignFuncParam
# DocGeneratorOptions - subclass of GeneratorOptions.
#
# Shares many members with CGeneratorOptions, since
# both are writing C-style declarations:
#
# prefixText - list of strings to prefix generated header with
# (usually a copyright statement + calling convention macros).
# apicall - string to use for the function declaration prefix,
# such as APICALL on Windows.
# apientry - string to use for the calling convention macro,
# in typedefs, such as APIENTRY.
# apientryp - string to use for the calling convention macro
# in function pointer typedefs, such as APIENTRYP.
# genDirectory - directory into which to generate include files
# indentFuncProto - True if prototype declarations should put each
# parameter on a separate line
# indentFuncPointer - True if typedefed function pointers should put each
# parameter on a separate line
# alignFuncParam - if nonzero and parameters are being put on a
# separate line, align parameter names at the specified column
#
# Additional members:
#
class DocGeneratorOptions(GeneratorOptions):
"""Represents options during C interface generation for Asciidoc"""
def __init__(self,
filename = None,
apiname = None,
profile = None,
versions = '.*',
emitversions = '.*',
defaultExtensions = None,
addExtensions = None,
removeExtensions = None,
sortProcedure = regSortFeatures,
prefixText = "",
apicall = '',
apientry = '',
apientryp = '',
genDirectory = 'gen',
indentFuncProto = True,
indentFuncPointer = False,
alignFuncParam = 0,
expandEnumerants = True):
GeneratorOptions.__init__(self, filename, apiname, profile,
versions, emitversions, defaultExtensions,
addExtensions, removeExtensions, sortProcedure)
self.prefixText = prefixText
self.apicall = apicall
self.apientry = apientry
self.apientryp = apientryp
self.genDirectory = genDirectory
self.indentFuncProto = indentFuncProto
self.indentFuncPointer = indentFuncPointer
self.alignFuncParam = alignFuncParam
self.expandEnumerants = expandEnumerants
# ThreadGeneratorOptions - subclass of GeneratorOptions.
#
# Adds options used by COutputGenerator objects during C language header
# generation.
#
# Additional members
# prefixText - list of strings to prefix generated header with
# (usually a copyright statement + calling convention macros).
# protectFile - True if multiple inclusion protection should be
# generated (based on the filename) around the entire header.
# protectFeature - True if #ifndef..#endif protection should be
# generated around a feature interface in the header file.
# genFuncPointers - True if function pointer typedefs should be
# generated
# protectProto - True if #ifdef..#endif protection should be
# generated around prototype declarations
# protectProtoStr - #ifdef symbol to use around prototype
# declarations, if protected
# apicall - string to use for the function declaration prefix,
# such as APICALL on Windows.
# apientry - string to use for the calling convention macro,
# in typedefs, such as APIENTRY.
# apientryp - string to use for the calling convention macro
# in function pointer typedefs, such as APIENTRYP.
# indentFuncProto - True if prototype declarations should put each
# parameter on a separate line
# indentFuncPointer - True if typedefed function pointers should put each
# parameter on a separate line
# alignFuncParam - if nonzero and parameters are being put on a
# separate line, align parameter names at the specified column
class ThreadGeneratorOptions(GeneratorOptions):
"""Represents options during C interface generation for headers"""
def __init__(self,
filename = None,
apiname = None,
profile = None,
versions = '.*',
emitversions = '.*',
defaultExtensions = None,
addExtensions = None,
removeExtensions = None,
sortProcedure = regSortFeatures,
prefixText = "",
genFuncPointers = True,
protectFile = True,
protectFeature = True,
protectProto = True,
protectProtoStr = True,
apicall = '',
apientry = '',
apientryp = '',
indentFuncProto = True,
indentFuncPointer = False,
alignFuncParam = 0):
GeneratorOptions.__init__(self, filename, apiname, profile,
versions, emitversions, defaultExtensions,
addExtensions, removeExtensions, sortProcedure)
self.prefixText = prefixText
self.genFuncPointers = genFuncPointers
self.protectFile = protectFile
self.protectFeature = protectFeature
self.protectProto = protectProto
self.protectProtoStr = protectProtoStr
self.apicall = apicall
self.apientry = apientry
self.apientryp = apientryp
self.indentFuncProto = indentFuncProto
self.indentFuncPointer = indentFuncPointer
self.alignFuncParam = alignFuncParam
# ParamCheckerGeneratorOptions - subclass of GeneratorOptions.
#
# Adds options used by ParamCheckerOutputGenerator objects during parameter validation
# generation.
#
# Additional members
# prefixText - list of strings to prefix generated header with
# (usually a copyright statement + calling convention macros).
# protectFile - True if multiple inclusion protection should be
# generated (based on the filename) around the entire header.
# protectFeature - True if #ifndef..#endif protection should be
# generated around a feature interface in the header file.
# genFuncPointers - True if function pointer typedefs should be
# generated
# protectProto - If conditional protection should be generated
# around prototype declarations, set to either '#ifdef'
# to require opt-in (#ifdef protectProtoStr) or '#ifndef'
# to require opt-out (#ifndef protectProtoStr). Otherwise
# set to None.
# protectProtoStr - #ifdef/#ifndef symbol to use around prototype
# declarations, if protectProto is set
# apicall - string to use for the function declaration prefix,
# such as APICALL on Windows.
# apientry - string to use for the calling convention macro,
# in typedefs, such as APIENTRY.
# apientryp - string to use for the calling convention macro
# in function pointer typedefs, such as APIENTRYP.
# indentFuncProto - True if prototype declarations should put each
# parameter on a separate line
# indentFuncPointer - True if typedefed function pointers should put each
# parameter on a separate line
# alignFuncParam - if nonzero and parameters are being put on a
# separate line, align parameter names at the specified column
class ParamCheckerGeneratorOptions(GeneratorOptions):
"""Represents options during C interface generation for headers"""
def __init__(self,
filename = None,
apiname = None,
profile = None,
versions = '.*',
emitversions = '.*',
defaultExtensions = None,
addExtensions = None,
removeExtensions = None,
sortProcedure = regSortFeatures,
prefixText = "",
genFuncPointers = True,
protectFile = True,
protectFeature = True,
protectProto = None,
protectProtoStr = None,
apicall = '',
apientry = '',
apientryp = '',
indentFuncProto = True,
indentFuncPointer = False,
alignFuncParam = 0):
GeneratorOptions.__init__(self, filename, apiname, profile,
versions, emitversions, defaultExtensions,
addExtensions, removeExtensions, sortProcedure)
self.prefixText = prefixText
self.genFuncPointers = genFuncPointers
self.protectFile = protectFile
self.protectFeature = protectFeature
self.protectProto = protectProto
self.protectProtoStr = protectProtoStr
self.apicall = apicall
self.apientry = apientry
self.apientryp = apientryp
self.indentFuncProto = indentFuncProto
self.indentFuncPointer = indentFuncPointer
self.alignFuncParam = alignFuncParam
# OutputGenerator - base class for generating API interfaces.
# Manages basic logic, logging, and output file control
# Derived classes actually generate formatted output.
#
# ---- methods ----
# OutputGenerator(errFile, warnFile, diagFile)
# errFile, warnFile, diagFile - file handles to write errors,
# warnings, diagnostics to. May be None to not write.
# logMsg(level, *args) - log messages of different categories
# level - 'error', 'warn', or 'diag'. 'error' will also
# raise a UserWarning exception
# *args - print()-style arguments
# setExtMap(map) - specify a dictionary map from extension names to
# numbers, used in creating values for extension enumerants.
# beginFile(genOpts) - start a new interface file
# genOpts - GeneratorOptions controlling what's generated and how
# endFile() - finish an interface file, closing it when done
# beginFeature(interface, emit) - write interface for a feature
# and tag generated features as having been done.
# interface - element for the <version> / <extension> to generate
# emit - actually write to the header only when True
# endFeature() - finish an interface.
# genType(typeinfo,name) - generate interface for a type
# typeinfo - TypeInfo for a type
# genStruct(typeinfo,name) - generate interface for a C "struct" type.
# typeinfo - TypeInfo for a type interpreted as a struct
# genGroup(groupinfo,name) - generate interface for a group of enums (C "enum")
# groupinfo - GroupInfo for a group
# genEnum(enuminfo, name) - generate interface for an enum (constant)
# enuminfo - EnumInfo for an enum
# name - enum name
# genCmd(cmdinfo) - generate interface for a command
# cmdinfo - CmdInfo for a command
# makeCDecls(cmd) - return C prototype and function pointer typedef for a
# <command> Element, as a list of two strings
# cmd - Element for the <command>
# newline() - print a newline to the output file (utility function)
#
class OutputGenerator:
"""Generate specified API interfaces in a specific style, such as a C header"""
def __init__(self,
errFile = sys.stderr,
warnFile = sys.stderr,
diagFile = sys.stdout):
self.outFile = None
self.errFile = errFile
self.warnFile = warnFile
self.diagFile = diagFile
# Internal state
self.featureName = None
self.genOpts = None
self.registry = None
# Used for extension enum value generation
self.extBase = 1000000000
self.extBlockSize = 1000
#
# logMsg - write a message of different categories to different
# destinations.
# level -
# 'diag' (diagnostic, voluminous)
# 'warn' (warning)
# 'error' (fatal error - raises exception after logging)
# *args - print()-style arguments to direct to corresponding log
def logMsg(self, level, *args):
"""Log a message at the given level. Can be ignored or log to a file"""
if (level == 'error'):
strfile = io.StringIO()
write('ERROR:', *args, file=strfile)
if (self.errFile != None):
write(strfile.getvalue(), file=self.errFile)
raise UserWarning(strfile.getvalue())
elif (level == 'warn'):
if (self.warnFile != None):
write('WARNING:', *args, file=self.warnFile)
elif (level == 'diag'):
if (self.diagFile != None):
write('DIAG:', *args, file=self.diagFile)
else:
raise UserWarning(
'*** FATAL ERROR in Generator.logMsg: unknown level:' + level)
#
# enumToValue - parses and converts an <enum> tag into a value.
# Returns a list
# first element - integer representation of the value, or None
# if needsNum is False. The value must be a legal number
# if needsNum is True.
# second element - string representation of the value
# There are several possible representations of values.
# A 'value' attribute simply contains the value.
# A 'bitpos' attribute defines a value by specifying the bit
# position which is set in that value.
# A 'offset','extbase','extends' triplet specifies a value
# as an offset to a base value defined by the specified
# 'extbase' extension name, which is then cast to the
# typename specified by 'extends'. This requires probing
# the registry database, and imbeds knowledge of the
# Vulkan extension enum scheme in this function.
def enumToValue(self, elem, needsNum):
name = elem.get('name')
numVal = None
if ('value' in elem.keys()):
value = elem.get('value')
# print('About to translate value =', value, 'type =', type(value))
if (needsNum):
numVal = int(value, 0)
# If there's a non-integer, numeric 'type' attribute (e.g. 'u' or
# 'ull'), append it to the string value.
# t = enuminfo.elem.get('type')
# if (t != None and t != '' and t != 'i' and t != 's'):
# value += enuminfo.type
self.logMsg('diag', 'Enum', name, '-> value [', numVal, ',', value, ']')
return [numVal, value]
if ('bitpos' in elem.keys()):
value = elem.get('bitpos')
numVal = int(value, 0)
numVal = 1 << numVal
value = '0x%08x' % numVal
self.logMsg('diag', 'Enum', name, '-> bitpos [', numVal, ',', value, ']')
return [numVal, value]
if ('offset' in elem.keys()):
# Obtain values in the mapping from the attributes
enumNegative = False
offset = int(elem.get('offset'),0)
extnumber = int(elem.get('extnumber'),0)
extends = elem.get('extends')
if ('dir' in elem.keys()):
enumNegative = True
self.logMsg('diag', 'Enum', name, 'offset =', offset,
'extnumber =', extnumber, 'extends =', extends,
'enumNegative =', enumNegative)
# Now determine the actual enumerant value, as defined
# in the "Layers and Extensions" appendix of the spec.
numVal = self.extBase + (extnumber - 1) * self.extBlockSize + offset
if (enumNegative):
numVal = -numVal
value = '%d' % numVal
# More logic needed!
self.logMsg('diag', 'Enum', name, '-> offset [', numVal, ',', value, ']')
return [numVal, value]
return [None, None]
#
def beginFile(self, genOpts):
self.genOpts = genOpts
#
# Open specified output file. Not done in constructor since a
# Generator can be used without writing to a file.
if (self.genOpts.filename != None):
self.outFile = open(self.genOpts.filename, 'w')
else:
self.outFile = sys.stdout
def endFile(self):
self.errFile and self.errFile.flush()
self.warnFile and self.warnFile.flush()
self.diagFile and self.diagFile.flush()
self.outFile.flush()
if (self.outFile != sys.stdout and self.outFile != sys.stderr):
self.outFile.close()
self.genOpts = None
#
def beginFeature(self, interface, emit):
self.emit = emit
self.featureName = interface.get('name')
# If there's an additional 'protect' attribute in the feature, save it
self.featureExtraProtect = interface.get('protect')
def endFeature(self):
# Derived classes responsible for emitting feature
self.featureName = None
self.featureExtraProtect = None
# Utility method to validate we're generating something only inside a
# <feature> tag
def validateFeature(self, featureType, featureName):
if (self.featureName == None):
raise UserWarning('Attempt to generate', featureType, name,
'when not in feature')
#
# Type generation
def genType(self, typeinfo, name):
self.validateFeature('type', name)
#
# Struct (e.g. C "struct" type) generation
def genStruct(self, typeinfo, name):
self.validateFeature('struct', name)
#
# Group (e.g. C "enum" type) generation
def genGroup(self, groupinfo, name):
self.validateFeature('group', name)
#
# Enumerant (really, constant) generation
def genEnum(self, enuminfo, name):
self.validateFeature('enum', name)
#
# Command generation
def genCmd(self, cmd, name):
self.validateFeature('command', name)
#
# Utility functions - turn a <proto> <name> into C-language prototype
# and typedef declarations for that name.
# name - contents of <name> tag
# tail - whatever text follows that tag in the Element
def makeProtoName(self, name, tail):
return self.genOpts.apientry + name + tail
def makeTypedefName(self, name, tail):
return '(' + self.genOpts.apientryp + 'PFN_' + name + tail + ')'
#
# makeCParamDecl - return a string which is an indented, formatted
# declaration for a <param> or <member> block (e.g. function parameter
# or structure/union member).
# param - Element (<param> or <member>) to format
# aligncol - if non-zero, attempt to align the nested <name> element
# at this column
def makeCParamDecl(self, param, aligncol):
paramdecl = ' ' + noneStr(param.text)
for elem in param:
text = noneStr(elem.text)
tail = noneStr(elem.tail)
if (elem.tag == 'name' and aligncol > 0):
self.logMsg('diag', 'Aligning parameter', elem.text, 'to column', self.genOpts.alignFuncParam)
# Align at specified column, if possible
paramdecl = paramdecl.rstrip()
oldLen = len(paramdecl)
paramdecl = paramdecl.ljust(aligncol)
newLen = len(paramdecl)
self.logMsg('diag', 'Adjust length of parameter decl from', oldLen, 'to', newLen, ':', paramdecl)
paramdecl += text + tail
return paramdecl
#
# getCParamTypeLength - return the length of the type field is an indented, formatted
# declaration for a <param> or <member> block (e.g. function parameter
# or structure/union member).
# param - Element (<param> or <member>) to identify
def getCParamTypeLength(self, param):
paramdecl = ' ' + noneStr(param.text)
for elem in param:
text = noneStr(elem.text)
tail = noneStr(elem.tail)
if (elem.tag == 'name'):
# Align at specified column, if possible
newLen = len(paramdecl.rstrip())
self.logMsg('diag', 'Identifying length of', elem.text, 'as', newLen)
paramdecl += text + tail
return newLen
#
# makeCDecls - return C prototype and function pointer typedef for a
# command, as a two-element list of strings.
# cmd - Element containing a <command> tag
def makeCDecls(self, cmd):
"""Generate C function pointer typedef for <command> Element"""
proto = cmd.find('proto')
params = cmd.findall('param')
# Begin accumulating prototype and typedef strings
pdecl = self.genOpts.apicall
tdecl = 'typedef '
#
# Insert the function return type/name.
# For prototypes, add APIENTRY macro before the name
# For typedefs, add (APIENTRY *<name>) around the name and
# use the PFN_cmdnameproc naming convention.
# Done by walking the tree for <proto> element by element.
# lxml.etree has elem.text followed by (elem[i], elem[i].tail)
# for each child element and any following text
# Leading text
pdecl += noneStr(proto.text)
tdecl += noneStr(proto.text)
# For each child element, if it's a <name> wrap in appropriate
# declaration. Otherwise append its contents and tail contents.
for elem in proto:
text = noneStr(elem.text)
tail = noneStr(elem.tail)
if (elem.tag == 'name'):
pdecl += self.makeProtoName(text, tail)
tdecl += self.makeTypedefName(text, tail)
else:
pdecl += text + tail
tdecl += text + tail
# Now add the parameter declaration list, which is identical
# for prototypes and typedefs. Concatenate all the text from
# a <param> node without the tags. No tree walking required
# since all tags are ignored.
# Uses: self.indentFuncProto
# self.indentFuncPointer
# self.alignFuncParam
# Might be able to doubly-nest the joins, e.g.
# ','.join(('_'.join([l[i] for i in range(0,len(l))])
n = len(params)
# Indented parameters
if n > 0:
indentdecl = '(\n'
for i in range(0,n):
paramdecl = self.makeCParamDecl(params[i], self.genOpts.alignFuncParam)
if (i < n - 1):
paramdecl += ',\n'
else:
paramdecl += ');'
indentdecl += paramdecl
else:
indentdecl = '(void);'
# Non-indented parameters
paramdecl = '('
if n > 0:
for i in range(0,n):
paramdecl += ''.join([t for t in params[i].itertext()])
if (i < n - 1):
paramdecl += ', '
else:
paramdecl += 'void'
paramdecl += ");";
return [ pdecl + indentdecl, tdecl + paramdecl ]
#
def newline(self):
write('', file=self.outFile)
def setRegistry(self, registry):
self.registry = registry
#
# COutputGenerator - subclass of OutputGenerator.
# Generates C-language API interfaces.
#
# ---- methods ----
# COutputGenerator(errFile, warnFile, diagFile) - args as for
# OutputGenerator. Defines additional internal state.
# ---- methods overriding base class ----
# beginFile(genOpts)
# endFile()
# beginFeature(interface, emit)
# endFeature()
# genType(typeinfo,name)
# genStruct(typeinfo,name)
# genGroup(groupinfo,name)
# genEnum(enuminfo, name)
# genCmd(cmdinfo)
class COutputGenerator(OutputGenerator):
"""Generate specified API interfaces in a specific style, such as a C header"""
# This is an ordered list of sections in the header file.
TYPE_SECTIONS = ['include', 'define', 'basetype', 'handle', 'enum',
'group', 'bitmask', 'funcpointer', 'struct']
ALL_SECTIONS = TYPE_SECTIONS + ['commandPointer', 'command']
def __init__(self,
errFile = sys.stderr,
warnFile = sys.stderr,
diagFile = sys.stdout):
OutputGenerator.__init__(self, errFile, warnFile, diagFile)
# Internal state - accumulators for different inner block text
self.sections = dict([(section, []) for section in self.ALL_SECTIONS])
#
def beginFile(self, genOpts):
OutputGenerator.beginFile(self, genOpts)
# C-specific
#
# Multiple inclusion protection & C++ wrappers.
if (genOpts.protectFile and self.genOpts.filename):
headerSym = '__' + re.sub('\.h', '_h_', os.path.basename(self.genOpts.filename))
write('#ifndef', headerSym, file=self.outFile)
write('#define', headerSym, '1', file=self.outFile)
self.newline()
write('#ifdef __cplusplus', file=self.outFile)
write('extern "C" {', file=self.outFile)
write('#endif', file=self.outFile)
self.newline()
#
# User-supplied prefix text, if any (list of strings)
if (genOpts.prefixText):
for s in genOpts.prefixText:
write(s, file=self.outFile)
#
# Some boilerplate describing what was generated - this
# will probably be removed later since the extensions
# pattern may be very long.
# write('/* Generated C header for:', file=self.outFile)
# write(' * API:', genOpts.apiname, file=self.outFile)
# if (genOpts.profile):
# write(' * Profile:', genOpts.profile, file=self.outFile)
# write(' * Versions considered:', genOpts.versions, file=self.outFile)
# write(' * Versions emitted:', genOpts.emitversions, file=self.outFile)
# write(' * Default extensions included:', genOpts.defaultExtensions, file=self.outFile)
# write(' * Additional extensions included:', genOpts.addExtensions, file=self.outFile)
# write(' * Extensions removed:', genOpts.removeExtensions, file=self.outFile)
# write(' */', file=self.outFile)
def endFile(self):
# C-specific
# Finish C++ wrapper and multiple inclusion protection
self.newline()
write('#ifdef __cplusplus', file=self.outFile)
write('}', file=self.outFile)
write('#endif', file=self.outFile)
if (self.genOpts.protectFile and self.genOpts.filename):
self.newline()
write('#endif', file=self.outFile)
# Finish processing in superclass
OutputGenerator.endFile(self)
def beginFeature(self, interface, emit):
# Start processing in superclass
OutputGenerator.beginFeature(self, interface, emit)
# C-specific
# Accumulate includes, defines, types, enums, function pointer typedefs,
# end function prototypes separately for this feature. They're only
# printed in endFeature().
self.sections = dict([(section, []) for section in self.ALL_SECTIONS])
def endFeature(self):
# C-specific
# Actually write the interface to the output file.
if (self.emit):
self.newline()
if (self.genOpts.protectFeature):
write('#ifndef', self.featureName, file=self.outFile)
# If type declarations are needed by other features based on
# this one, it may be necessary to suppress the ExtraProtect,
# or move it below the 'for section...' loop.
if (self.featureExtraProtect != None):
write('#ifdef', self.featureExtraProtect, file=self.outFile)
write('#define', self.featureName, '1', file=self.outFile)
for section in self.TYPE_SECTIONS:
contents = self.sections[section]
if contents:
write('\n'.join(contents), file=self.outFile)
self.newline()
if (self.genOpts.genFuncPointers and self.sections['commandPointer']):
write('\n'.join(self.sections['commandPointer']), file=self.outFile)
self.newline()
if (self.sections['command']):
if (self.genOpts.protectProto):
write(self.genOpts.protectProto,
self.genOpts.protectProtoStr, file=self.outFile)
write('\n'.join(self.sections['command']), end='', file=self.outFile)
if (self.genOpts.protectProto):
write('#endif', file=self.outFile)
else:
self.newline()
if (self.featureExtraProtect != None):
write('#endif /*', self.featureExtraProtect, '*/', file=self.outFile)
if (self.genOpts.protectFeature):
write('#endif /*', self.featureName, '*/', file=self.outFile)
# Finish processing in superclass
OutputGenerator.endFeature(self)
#
# Append a definition to the specified section
def appendSection(self, section, text):
# self.sections[section].append('SECTION: ' + section + '\n')
self.sections[section].append(text)
#
# Type generation
def genType(self, typeinfo, name):
OutputGenerator.genType(self, typeinfo, name)
typeElem = typeinfo.elem
# If the type is a struct type, traverse the imbedded <member> tags
# generating a structure. Otherwise, emit the tag text.
category = typeElem.get('category')
if (category == 'struct' or category == 'union'):
self.genStruct(typeinfo, name)
else:
# Replace <apientry /> tags with an APIENTRY-style string
# (from self.genOpts). Copy other text through unchanged.
# If the resulting text is an empty string, don't emit it.
s = noneStr(typeElem.text)
for elem in typeElem:
if (elem.tag == 'apientry'):
s += self.genOpts.apientry + noneStr(elem.tail)
else:
s += noneStr(elem.text) + noneStr(elem.tail)
if s:
# Add extra newline after multi-line entries.
if '\n' in s:
s += '\n'
self.appendSection(category, s)
#
# Struct (e.g. C "struct" type) generation.
# This is a special case of the <type> tag where the contents are
# interpreted as a set of <member> tags instead of freeform C
# C type declarations. The <member> tags are just like <param>
# tags - they are a declaration of a struct or union member.
# Only simple member declarations are supported (no nested
# structs etc.)
def genStruct(self, typeinfo, typeName):
OutputGenerator.genStruct(self, typeinfo, typeName)
body = 'typedef ' + typeinfo.elem.get('category') + ' ' + typeName + ' {\n'
# paramdecl = self.makeCParamDecl(typeinfo.elem, self.genOpts.alignFuncParam)
targetLen = 0;
for member in typeinfo.elem.findall('.//member'):
targetLen = max(targetLen, self.getCParamTypeLength(member))
for member in typeinfo.elem.findall('.//member'):
body += self.makeCParamDecl(member, targetLen + 4)
body += ';\n'
body += '} ' + typeName + ';\n'
self.appendSection('struct', body)
#
# Group (e.g. C "enum" type) generation.
# These are concatenated together with other types.
def genGroup(self, groupinfo, groupName):
OutputGenerator.genGroup(self, groupinfo, groupName)
groupElem = groupinfo.elem
# See if this group needs min/max/num/padding at end
expand = 'expand' in groupElem.keys()
if (expand):
expandPrefix = groupElem.get('expand')
# Prefix
body = "\ntypedef enum " + groupName + " {\n"
# Loop over the nested 'enum' tags. Keep track of the minimum and
# maximum numeric values, if they can be determined; but only for
# core API enumerants, not extension enumerants. This is inferred
# by looking for 'extends' attributes.
minName = None
for elem in groupElem.findall('enum'):
# Convert the value to an integer and use that to track min/max.
# Values of form -(number) are accepted but nothing more complex.
# Should catch exceptions here for more complex constructs. Not yet.
(numVal,strVal) = self.enumToValue(elem, True)
name = elem.get('name')
body += " " + name + " = " + strVal + ",\n"
if (expand and elem.get('extends') is None):
if (minName == None):
minName = maxName = name
minValue = maxValue = numVal
elif (numVal < minValue):
minName = name
minValue = numVal
elif (numVal > maxValue):
maxName = name
maxValue = numVal
# Generate min/max value tokens and a range-padding enum. Need some
# additional padding to generate correct names...
if (expand):
body += " " + expandPrefix + "_BEGIN_RANGE = " + minName + ",\n"
body += " " + expandPrefix + "_END_RANGE = " + maxName + ",\n"
body += " " + expandPrefix + "_RANGE_SIZE = (" + maxName + " - " + minName + " + 1),\n"
body += " " + expandPrefix + "_MAX_ENUM = 0x7FFFFFFF\n"
# Postfix
body += "} " + groupName + ";"
if groupElem.get('type') == 'bitmask':
section = 'bitmask'
else:
section = 'group'
self.appendSection(section, body)
# Enumerant generation
# <enum> tags may specify their values in several ways, but are usually
# just integers.
def genEnum(self, enuminfo, name):
OutputGenerator.genEnum(self, enuminfo, name)
(numVal,strVal) = self.enumToValue(enuminfo.elem, False)
body = '#define ' + name.ljust(33) + ' ' + strVal
self.appendSection('enum', body)
#
# Command generation
def genCmd(self, cmdinfo, name):
OutputGenerator.genCmd(self, cmdinfo, name)
#
decls = self.makeCDecls(cmdinfo.elem)
self.appendSection('command', decls[0] + '\n')
if (self.genOpts.genFuncPointers):
self.appendSection('commandPointer', decls[1])
# DocOutputGenerator - subclass of OutputGenerator.
# Generates AsciiDoc includes with C-language API interfaces, for reference
# pages and the Vulkan specification. Similar to COutputGenerator, but
# each interface is written into a different file as determined by the
# options, only actual C types are emitted, and none of the boilerplate
# preprocessor code is emitted.
#
# ---- methods ----
# DocOutputGenerator(errFile, warnFile, diagFile) - args as for
# OutputGenerator. Defines additional internal state.
# ---- methods overriding base class ----
# beginFile(genOpts)
# endFile()
# beginFeature(interface, emit)
# endFeature()
# genType(typeinfo,name)
# genStruct(typeinfo,name)
# genGroup(groupinfo,name)
# genEnum(enuminfo, name)
# genCmd(cmdinfo)
class DocOutputGenerator(OutputGenerator):
"""Generate specified API interfaces in a specific style, such as a C header"""
def __init__(self,
errFile = sys.stderr,
warnFile = sys.stderr,
diagFile = sys.stdout):
OutputGenerator.__init__(self, errFile, warnFile, diagFile)
#
def beginFile(self, genOpts):
OutputGenerator.beginFile(self, genOpts)
def endFile(self):
OutputGenerator.endFile(self)
def beginFeature(self, interface, emit):
# Start processing in superclass
OutputGenerator.beginFeature(self, interface, emit)
def endFeature(self):
# Finish processing in superclass
OutputGenerator.endFeature(self)
#
# Generate an include file
#
# directory - subdirectory to put file in
# basename - base name of the file
# contents - contents of the file (Asciidoc boilerplate aside)
def writeInclude(self, directory, basename, contents):
# Create file
filename = self.genOpts.genDirectory + '/' + directory + '/' + basename + '.txt'
self.logMsg('diag', '# Generating include file:', filename)
fp = open(filename, 'w')
# Asciidoc anchor
write('[[{0},{0}]]'.format(basename), file=fp)
write('["source","{basebackend@docbook:c++:cpp}",title=""]', file=fp)
write('------------------------------------------------------------------------------', file=fp)
write(contents, file=fp)
write('------------------------------------------------------------------------------', file=fp)
fp.close()
#
# Type generation
def genType(self, typeinfo, name):
OutputGenerator.genType(self, typeinfo, name)
typeElem = typeinfo.elem
# If the type is a struct type, traverse the imbedded <member> tags
# generating a structure. Otherwise, emit the tag text.
category = typeElem.get('category')
if (category == 'struct' or category == 'union'):
self.genStruct(typeinfo, name)
else:
# Replace <apientry /> tags with an APIENTRY-style string
# (from self.genOpts). Copy other text through unchanged.
# If the resulting text is an empty string, don't emit it.
s = noneStr(typeElem.text)
for elem in typeElem:
if (elem.tag == 'apientry'):
s += self.genOpts.apientry + noneStr(elem.tail)
else:
s += noneStr(elem.text) + noneStr(elem.tail)
if (len(s) > 0):
if (category == 'bitmask'):
self.writeInclude('flags', name, s + '\n')
elif (category == 'enum'):
self.writeInclude('enums', name, s + '\n')
elif (category == 'funcpointer'):
self.writeInclude('funcpointers', name, s+ '\n')
else:
self.logMsg('diag', '# NOT writing include file for type:',
name, 'category: ', category)
else:
self.logMsg('diag', '# NOT writing empty include file for type', name)
#
# Struct (e.g. C "struct" type) generation.
# This is a special case of the <type> tag where the contents are
# interpreted as a set of <member> tags instead of freeform C
# C type declarations. The <member> tags are just like <param>
# tags - they are a declaration of a struct or union member.
# Only simple member declarations are supported (no nested
# structs etc.)
def genStruct(self, typeinfo, typeName):
OutputGenerator.genStruct(self, typeinfo, typeName)
s = 'typedef ' + typeinfo.elem.get('category') + ' ' + typeName + ' {\n'
# paramdecl = self.makeCParamDecl(typeinfo.elem, self.genOpts.alignFuncParam)
targetLen = 0;
for member in typeinfo.elem.findall('.//member'):
targetLen = max(targetLen, self.getCParamTypeLength(member))
for member in typeinfo.elem.findall('.//member'):
s += self.makeCParamDecl(member, targetLen + 4)
s += ';\n'
s += '} ' + typeName + ';'
self.writeInclude('structs', typeName, s)
#
# Group (e.g. C "enum" type) generation.
# These are concatenated together with other types.
def genGroup(self, groupinfo, groupName):
OutputGenerator.genGroup(self, groupinfo, groupName)
groupElem = groupinfo.elem
# See if this group needs min/max/num/padding at end
expand = self.genOpts.expandEnumerants and ('expand' in groupElem.keys())
if (expand):
expandPrefix = groupElem.get('expand')
# Prefix
s = "typedef enum " + groupName + " {\n"
# Loop over the nested 'enum' tags. Keep track of the minimum and
# maximum numeric values, if they can be determined.
minName = None
for elem in groupElem.findall('enum'):
# Convert the value to an integer and use that to track min/max.
# Values of form -(number) are accepted but nothing more complex.
# Should catch exceptions here for more complex constructs. Not yet.
(numVal,strVal) = self.enumToValue(elem, True)
name = elem.get('name')
s += " " + name + " = " + strVal + ",\n"
if (expand and elem.get('extends') is None):
if (minName == None):
minName = maxName = name
minValue = maxValue = numVal
elif (numVal < minValue):
minName = name
minValue = numVal
elif (numVal > maxValue):
maxName = name
maxValue = numVal
# Generate min/max value tokens and a range-padding enum. Need some
# additional padding to generate correct names...
if (expand):
s += "\n"
s += " " + expandPrefix + "_BEGIN_RANGE = " + minName + ",\n"
s += " " + expandPrefix + "_END_RANGE = " + maxName + ",\n"
s += " " + expandPrefix + "_NUM = (" + maxName + " - " + minName + " + 1),\n"
s += " " + expandPrefix + "_MAX_ENUM = 0x7FFFFFFF\n"
# Postfix
s += "} " + groupName + ";"
self.writeInclude('enums', groupName, s)
# Enumerant generation
# <enum> tags may specify their values in several ways, but are usually
# just integers.
def genEnum(self, enuminfo, name):
OutputGenerator.genEnum(self, enuminfo, name)
(numVal,strVal) = self.enumToValue(enuminfo.elem, False)
s = '#define ' + name.ljust(33) + ' ' + strVal
self.logMsg('diag', '# NOT writing compile-time constant', name)
# self.writeInclude('consts', name, s)
#
# Command generation
def genCmd(self, cmdinfo, name):
OutputGenerator.genCmd(self, cmdinfo, name)
#
decls = self.makeCDecls(cmdinfo.elem)
self.writeInclude('protos', name, decls[0])
# PyOutputGenerator - subclass of OutputGenerator.
# Generates Python data structures describing API names.
# Similar to DocOutputGenerator, but writes a single
# file.
#
# ---- methods ----
# PyOutputGenerator(errFile, warnFile, diagFile) - args as for
# OutputGenerator. Defines additional internal state.
# ---- methods overriding base class ----
# beginFile(genOpts)
# endFile()
# genType(typeinfo,name)
# genStruct(typeinfo,name)
# genGroup(groupinfo,name)
# genEnum(enuminfo, name)
# genCmd(cmdinfo)
class PyOutputGenerator(OutputGenerator):
"""Generate specified API interfaces in a specific style, such as a C header"""
def __init__(self,
errFile = sys.stderr,
warnFile = sys.stderr,
diagFile = sys.stdout):
OutputGenerator.__init__(self, errFile, warnFile, diagFile)
#
def beginFile(self, genOpts):
OutputGenerator.beginFile(self, genOpts)
for dict in [ 'flags', 'enums', 'structs', 'consts', 'enums',
'consts', 'protos', 'funcpointers' ]:
write(dict, '= {}', file=self.outFile)
def endFile(self):
OutputGenerator.endFile(self)
#
# Add a name from the interface
#
# dict - type of name (see beginFile above)
# name - name to add
# value - A serializable Python value for the name
def addName(self, dict, name, value=None):
write(dict + "['" + name + "'] = ", value, file=self.outFile)
#
# Type generation
# For 'struct' or 'union' types, defer to genStruct() to
# add to the dictionary.
# For 'bitmask' types, add the type name to the 'flags' dictionary,
# with the value being the corresponding 'enums' name defining
# the acceptable flag bits.
# For 'enum' types, add the type name to the 'enums' dictionary,
# with the value being '@STOPHERE@' (because this case seems
# never to happen).
# For 'funcpointer' types, add the type name to the 'funcpointers'
# dictionary.
# For 'handle' and 'define' types, add the handle or #define name
# to the 'struct' dictionary, because that's how the spec sources
# tag these types even though they aren't structs.
def genType(self, typeinfo, name):
OutputGenerator.genType(self, typeinfo, name)
typeElem = typeinfo.elem
# If the type is a struct type, traverse the imbedded <member> tags
# generating a structure. Otherwise, emit the tag text.
category = typeElem.get('category')
if (category == 'struct' or category == 'union'):
self.genStruct(typeinfo, name)
else:
# Extract the type name
# (from self.genOpts). Copy other text through unchanged.
# If the resulting text is an empty string, don't emit it.
count = len(noneStr(typeElem.text))
for elem in typeElem:
count += len(noneStr(elem.text)) + len(noneStr(elem.tail))
if (count > 0):
if (category == 'bitmask'):
requiredEnum = typeElem.get('requires')
self.addName('flags', name, enquote(requiredEnum))
elif (category == 'enum'):
# This case never seems to come up!
# @enums C 'enum' name Dictionary of enumerant names
self.addName('enums', name, enquote('@STOPHERE@'))
elif (category == 'funcpointer'):
self.addName('funcpointers', name, None)
elif (category == 'handle' or category == 'define'):
self.addName('structs', name, None)
else:
write('# Unprocessed type:', name, 'category:', category, file=self.outFile)
else:
write('# Unprocessed type:', name, file=self.outFile)
#
# Struct (e.g. C "struct" type) generation.
#
# Add the struct name to the 'structs' dictionary, with the
# value being an ordered list of the struct member names.
def genStruct(self, typeinfo, typeName):
OutputGenerator.genStruct(self, typeinfo, typeName)
members = [member.text for member in typeinfo.elem.findall('.//member/name')]
self.addName('structs', typeName, members)
#
# Group (e.g. C "enum" type) generation.
# These are concatenated together with other types.
#
# Add the enum type name to the 'enums' dictionary, with
# the value being an ordered list of the enumerant names.
# Add each enumerant name to the 'consts' dictionary, with
# the value being the enum type the enumerant is part of.
def genGroup(self, groupinfo, groupName):
OutputGenerator.genGroup(self, groupinfo, groupName)
groupElem = groupinfo.elem
# @enums C 'enum' name Dictionary of enumerant names
# @consts C enumerant/const name Name of corresponding 'enums' key
# Loop over the nested 'enum' tags. Keep track of the minimum and
# maximum numeric values, if they can be determined.
enumerants = [elem.get('name') for elem in groupElem.findall('enum')]
for name in enumerants:
self.addName('consts', name, enquote(groupName))
self.addName('enums', groupName, enumerants)
# Enumerant generation (compile-time constants)
#
# Add the constant name to the 'consts' dictionary, with the
# value being None to indicate that the constant isn't
# an enumeration value.
def genEnum(self, enuminfo, name):
OutputGenerator.genEnum(self, enuminfo, name)
# @consts C enumerant/const name Name of corresponding 'enums' key
self.addName('consts', name, None)
#
# Command generation
#
# Add the command name to the 'protos' dictionary, with the
# value being an ordered list of the parameter names.
def genCmd(self, cmdinfo, name):
OutputGenerator.genCmd(self, cmdinfo, name)
params = [param.text for param in cmdinfo.elem.findall('param/name')]
self.addName('protos', name, params)
# ValidityOutputGenerator - subclass of OutputGenerator.
# Generates AsciiDoc includes of valid usage information, for reference
# pages and the Vulkan specification. Similar to DocOutputGenerator.
#
# ---- methods ----
# ValidityOutputGenerator(errFile, warnFile, diagFile) - args as for
# OutputGenerator. Defines additional internal state.
# ---- methods overriding base class ----
# beginFile(genOpts)
# endFile()
# beginFeature(interface, emit)
# endFeature()
# genCmd(cmdinfo)
class ValidityOutputGenerator(OutputGenerator):
"""Generate specified API interfaces in a specific style, such as a C header"""
def __init__(self,
errFile = sys.stderr,
warnFile = sys.stderr,
diagFile = sys.stdout):
OutputGenerator.__init__(self, errFile, warnFile, diagFile)
def beginFile(self, genOpts):
OutputGenerator.beginFile(self, genOpts)
def endFile(self):
OutputGenerator.endFile(self)
def beginFeature(self, interface, emit):
# Start processing in superclass
OutputGenerator.beginFeature(self, interface, emit)
def endFeature(self):
# Finish processing in superclass
OutputGenerator.endFeature(self)
def makeParameterName(self, name):
return 'pname:' + name
def makeStructName(self, name):
return 'sname:' + name
def makeBaseTypeName(self, name):
return 'basetype:' + name
def makeEnumerationName(self, name):
return 'elink:' + name
def makeEnumerantName(self, name):
return 'ename:' + name
def makeFLink(self, name):
return 'flink:' + name
#
# Generate an include file
#
# directory - subdirectory to put file in
# basename - base name of the file
# contents - contents of the file (Asciidoc boilerplate aside)
def writeInclude(self, directory, basename, validity, threadsafety, commandpropertiesentry, successcodes, errorcodes):
# Create file
filename = self.genOpts.genDirectory + '/' + directory + '/' + basename + '.txt'
self.logMsg('diag', '# Generating include file:', filename)
fp = open(filename, 'w')
# Asciidoc anchor
# Valid Usage
if validity is not None:
write('.Valid Usage', file=fp)
write('*' * 80, file=fp)
write(validity, file=fp, end='')
write('*' * 80, file=fp)
write('', file=fp)
# Host Synchronization
if threadsafety is not None:
write('.Host Synchronization', file=fp)
write('*' * 80, file=fp)
write(threadsafety, file=fp, end='')
write('*' * 80, file=fp)
write('', file=fp)
# Command Properties - contained within a block, to avoid table numbering
if commandpropertiesentry is not None:
write('.Command Properties', file=fp)
write('*' * 80, file=fp)
write('[options="header", width="100%"]', file=fp)
write('|=====================', file=fp)
write('|Command Buffer Levels|Render Pass Scope|Supported Queue Types', file=fp)
write(commandpropertiesentry, file=fp)
write('|=====================', file=fp)
write('*' * 80, file=fp)
write('', file=fp)
# Success Codes - contained within a block, to avoid table numbering
if successcodes is not None or errorcodes is not None:
write('.Return Codes', file=fp)
write('*' * 80, file=fp)
if successcodes is not None:
write('<<fundamentals-successcodes,Success>>::', file=fp)
write(successcodes, file=fp)
if errorcodes is not None:
write('<<fundamentals-errorcodes,Failure>>::', file=fp)
write(errorcodes, file=fp)
write('*' * 80, file=fp)
write('', file=fp)
fp.close()
#
# Check if the parameter passed in is a pointer
def paramIsPointer(self, param):
ispointer = False
paramtype = param.find('type')
if paramtype.tail is not None and '*' in paramtype.tail:
ispointer = True
return ispointer
#
# Check if the parameter passed in is a static array
def paramIsStaticArray(self, param):
if param.find('name').tail is not None:
if param.find('name').tail[0] == '[':
return True
#
# Get the length of a parameter that's been identified as a static array
def staticArrayLength(self, param):
paramname = param.find('name')
paramenumsize = param.find('enum')
if paramenumsize is not None:
return paramenumsize.text
else:
return paramname.tail[1:-1]
#
# Check if the parameter passed in is a pointer to an array
def paramIsArray(self, param):
return param.attrib.get('len') is not None
#
# Get the parent of a handle object
def getHandleParent(self, typename):
types = self.registry.findall("types/type")
for elem in types:
if (elem.find("name") is not None and elem.find('name').text == typename) or elem.attrib.get('name') == typename:
return elem.attrib.get('parent')
#
# Check if a parent object is dispatchable or not
def isHandleTypeDispatchable(self, handlename):
handle = self.registry.find("types/type/[name='" + handlename + "'][@category='handle']")
if handle is not None and handle.find('type').text == 'VK_DEFINE_HANDLE':
return True
else:
return False
def isHandleOptional(self, param, params):
# See if the handle is optional
isOptional = False
# Simple, if it's optional, return true
if param.attrib.get('optional') is not None:
return True
# If no validity is being generated, it usually means that validity is complex and not absolute, so let's say yes.
if param.attrib.get('noautovalidity') is not None:
return True
# If the parameter is an array and we haven't already returned, find out if any of the len parameters are optional
if self.paramIsArray(param):
lengths = param.attrib.get('len').split(',')
for length in lengths:
if (length) != 'null-terminated' and (length) != '1':
for otherparam in params:
if otherparam.find('name').text == length:
if otherparam.attrib.get('optional') is not None:
return True
return False
#
# Get the category of a type
def getTypeCategory(self, typename):
types = self.registry.findall("types/type")
for elem in types:
if (elem.find("name") is not None and elem.find('name').text == typename) or elem.attrib.get('name') == typename:
return elem.attrib.get('category')
#
# Make a chunk of text for the end of a parameter if it is an array
def makeAsciiDocPreChunk(self, param, params):
paramname = param.find('name')
paramtype = param.find('type')
# General pre-amble. Check optionality and add stuff.
asciidoc = '* '
if self.paramIsStaticArray(param):
asciidoc += 'Any given element of '
elif self.paramIsArray(param):
lengths = param.attrib.get('len').split(',')
# Find all the parameters that are called out as optional, so we can document that they might be zero, and the array may be ignored
optionallengths = []
for length in lengths:
if (length) != 'null-terminated' and (length) != '1':
for otherparam in params:
if otherparam.find('name').text == length:
if otherparam.attrib.get('optional') is not None:
if self.paramIsPointer(otherparam):
optionallengths.append('the value referenced by ' + self.makeParameterName(length))
else:
optionallengths.append(self.makeParameterName(length))
# Document that these arrays may be ignored if any of the length values are 0
if len(optionallengths) != 0 or param.attrib.get('optional') is not None:
asciidoc += 'If '
if len(optionallengths) != 0:
if len(optionallengths) == 1:
asciidoc += optionallengths[0]
asciidoc += ' is '
else:
asciidoc += ' or '.join(optionallengths)
asciidoc += ' are '
asciidoc += 'not `0`, '
if len(optionallengths) != 0 and param.attrib.get('optional') is not None:
asciidoc += 'and '
if param.attrib.get('optional') is not None:
asciidoc += self.makeParameterName(paramname.text)
asciidoc += ' is not `NULL`, '
elif param.attrib.get('optional') is not None:
# Don't generate this stub for bitflags
if self.getTypeCategory(paramtype.text) != 'bitmask':
if param.attrib.get('optional').split(',')[0] == 'true':
asciidoc += 'If '
asciidoc += self.makeParameterName(paramname.text)
asciidoc += ' is not '
if self.paramIsArray(param) or self.paramIsPointer(param) or self.isHandleTypeDispatchable(paramtype.text):
asciidoc += '`NULL`'
elif self.getTypeCategory(paramtype.text) == 'handle':
asciidoc += 'sname:VK_NULL_HANDLE'
else:
asciidoc += '`0`'
asciidoc += ', '
return asciidoc
#
# Make the generic asciidoc line chunk portion used for all parameters.
# May return an empty string if nothing to validate.
def createValidationLineForParameterIntroChunk(self, param, params, typetext):
asciidoc = ''
paramname = param.find('name')
paramtype = param.find('type')
asciidoc += self.makeAsciiDocPreChunk(param, params)
asciidoc += self.makeParameterName(paramname.text)
asciidoc += ' must: be '
if self.paramIsArray(param):
# Arrays. These are hard to get right, apparently
lengths = param.attrib.get('len').split(',')
if (lengths[0]) == 'null-terminated':
asciidoc += 'a null-terminated '
elif (lengths[0]) == '1':
asciidoc += 'a pointer to '
else:
asciidoc += 'a pointer to an array of '
# Handle equations, which are currently denoted with latex
if 'latexmath:' in lengths[0]:
asciidoc += lengths[0]
else:
asciidoc += self.makeParameterName(lengths[0])
asciidoc += ' '
for length in lengths[1:]:
if (length) == 'null-terminated': # This should always be the last thing. If it ever isn't for some bizarre reason, then this will need some massaging.
asciidoc += 'null-terminated '
elif (length) == '1':
asciidoc += 'pointers to '
else:
asciidoc += 'pointers to arrays of '
# Handle equations, which are currently denoted with latex
if 'latex:' in length:
asciidoc += length
else:
asciidoc += self.makeParameterName(length)
asciidoc += ' '
# Void pointers don't actually point at anything - remove the word "to"
if paramtype.text == 'void':
if lengths[-1] == '1':
if len(lengths) > 1:
asciidoc = asciidoc[:-5] # Take care of the extra s added by the post array chunk function. #HACK#
else:
asciidoc = asciidoc[:-4]
else:
# An array of void values is a byte array.
asciidoc += 'byte'
elif paramtype.text == 'char':
# A null terminated array of chars is a string
if lengths[-1] == 'null-terminated':
asciidoc += 'string'
else:
# Else it's just a bunch of chars
asciidoc += 'char value'
elif param.text is not None:
# If a value is "const" that means it won't get modified, so it must be valid going into the function.
if 'const' in param.text:
typecategory = self.getTypeCategory(paramtype.text)
if (typecategory != 'struct' and typecategory != 'union' and typecategory != 'basetype' and typecategory is not None) or not self.isStructAlwaysValid(paramtype.text):
asciidoc += 'valid '
asciidoc += typetext
# pluralize
if len(lengths) > 1 or (lengths[0] != '1' and lengths[0] != 'null-terminated'):
asciidoc += 's'
elif self.paramIsPointer(param):
# Handle pointers - which are really special case arrays (i.e. they don't have a length)
pointercount = paramtype.tail.count('*')
# Could be multi-level pointers (e.g. ppData - pointer to a pointer). Handle that.
for i in range(0, pointercount):
asciidoc += 'a pointer to '
if paramtype.text == 'void':
# If there's only one pointer, it's optional, and it doesn't point at anything in particular - we don't need any language.
if pointercount == 1 and param.attrib.get('optional') is not None:
return '' # early return
else:
# Pointer to nothing in particular - delete the " to " portion
asciidoc = asciidoc[:-4]
else:
# Add an article for English semantic win
asciidoc += 'a '
# If a value is "const" that means it won't get modified, so it must be valid going into the function.
if param.text is not None and paramtype.text != 'void':
if 'const' in param.text:
asciidoc += 'valid '
asciidoc += typetext
else:
# Non-pointer, non-optional things must be valid
asciidoc += 'a valid '
asciidoc += typetext
if asciidoc != '':
asciidoc += '\n'
# Add additional line for non-optional bitmasks
if self.getTypeCategory(paramtype.text) == 'bitmask':
if param.attrib.get('optional') is None:
asciidoc += '* '
if self.paramIsArray(param):
asciidoc += 'Each element of '
asciidoc += 'pname:'
asciidoc += paramname.text
asciidoc += ' mustnot: be `0`'
asciidoc += '\n'
return asciidoc
def makeAsciiDocLineForParameter(self, param, params, typetext):
if param.attrib.get('noautovalidity') is not None:
return ''
asciidoc = self.createValidationLineForParameterIntroChunk(param, params, typetext)
return asciidoc
# Try to do check if a structure is always considered valid (i.e. there's no rules to its acceptance)
def isStructAlwaysValid(self, structname):
struct = self.registry.find("types/type[@name='" + structname + "']")
params = struct.findall('member')
validity = struct.find('validity')
if validity is not None:
return False
for param in params:
paramname = param.find('name')
paramtype = param.find('type')
typecategory = self.getTypeCategory(paramtype.text)
if paramname.text == 'pNext':
return False
if paramname.text == 'sType':
return False
if paramtype.text == 'void' or paramtype.text == 'char' or self.paramIsArray(param) or self.paramIsPointer(param):
if self.makeAsciiDocLineForParameter(param, params, '') != '':
return False
elif typecategory == 'handle' or typecategory == 'enum' or typecategory == 'bitmask' or param.attrib.get('returnedonly') == 'true':
return False
elif typecategory == 'struct' or typecategory == 'union':
if self.isStructAlwaysValid(paramtype.text) is False:
return False
return True
#
# Make an entire asciidoc line for a given parameter
def createValidationLineForParameter(self, param, params, typecategory):
asciidoc = ''
paramname = param.find('name')
paramtype = param.find('type')
if paramtype.text == 'void' or paramtype.text == 'char':
# Chars and void are special cases - needs care inside the generator functions
# A null-terminated char array is a string, else it's chars.
# An array of void values is a byte array, a void pointer is just a pointer to nothing in particular
asciidoc += self.makeAsciiDocLineForParameter(param, params, '')
elif typecategory == 'bitmask':
bitsname = paramtype.text.replace('Flags', 'FlagBits')
if self.registry.find("enums[@name='" + bitsname + "']") is None:
asciidoc += '* '
asciidoc += self.makeParameterName(paramname.text)
asciidoc += ' must: be `0`'
asciidoc += '\n'
else:
if self.paramIsArray(param):
asciidoc += self.makeAsciiDocLineForParameter(param, params, 'combinations of ' + self.makeEnumerationName(bitsname) + ' value')
else:
asciidoc += self.makeAsciiDocLineForParameter(param, params, 'combination of ' + self.makeEnumerationName(bitsname) + ' values')
elif typecategory == 'handle':
asciidoc += self.makeAsciiDocLineForParameter(param, params, self.makeStructName(paramtype.text) + ' handle')
elif typecategory == 'enum':
asciidoc += self.makeAsciiDocLineForParameter(param, params, self.makeEnumerationName(paramtype.text) + ' value')
elif typecategory == 'struct':
if (self.paramIsArray(param) or self.paramIsPointer(param)) or not self.isStructAlwaysValid(paramtype.text):
asciidoc += self.makeAsciiDocLineForParameter(param, params, self.makeStructName(paramtype.text) + ' structure')
elif typecategory == 'union':
if (self.paramIsArray(param) or self.paramIsPointer(param)) or not self.isStructAlwaysValid(paramtype.text):
asciidoc += self.makeAsciiDocLineForParameter(param, params, self.makeStructName(paramtype.text) + ' union')
elif self.paramIsArray(param) or self.paramIsPointer(param):
asciidoc += self.makeAsciiDocLineForParameter(param, params, self.makeBaseTypeName(paramtype.text) + ' value')
return asciidoc
#
# Make an asciidoc validity entry for a handle's parent object
def makeAsciiDocHandleParent(self, param, params):
asciidoc = ''
paramname = param.find('name')
paramtype = param.find('type')
# Deal with handle parents
handleparent = self.getHandleParent(paramtype.text)
if handleparent is not None:
parentreference = None
for otherparam in params:
if otherparam.find('type').text == handleparent:
parentreference = otherparam.find('name').text
if parentreference is not None:
asciidoc += '* '
if self.isHandleOptional(param, params):
if self.paramIsArray(param):
asciidoc += 'Each element of '
asciidoc += self.makeParameterName(paramname.text)
asciidoc += ' that is a valid handle'
else:
asciidoc += 'If '
asciidoc += self.makeParameterName(paramname.text)
asciidoc += ' is a valid handle, it'
else:
if self.paramIsArray(param):
asciidoc += 'Each element of '
asciidoc += self.makeParameterName(paramname.text)
asciidoc += ' must: have been created, allocated or retrieved from '
asciidoc += self.makeParameterName(parentreference)
asciidoc += '\n'
return asciidoc
#
# Generate an asciidoc validity line for the sType value of a struct
def makeStructureType(self, blockname, param):
asciidoc = '* '
paramname = param.find('name')
paramtype = param.find('type')
asciidoc += self.makeParameterName(paramname.text)
asciidoc += ' must: be '
structuretype = ''
for elem in re.findall(r'(([A-Z][a-z]+)|([A-Z][A-Z]+))', blockname):
if elem[0] == 'Vk':
structuretype += 'VK_STRUCTURE_TYPE_'
else:
structuretype += elem[0].upper()
structuretype += '_'
asciidoc += self.makeEnumerantName(structuretype[:-1])
asciidoc += '\n'
return asciidoc
#
# Generate an asciidoc validity line for the pNext value of a struct
def makeStructureExtensionPointer(self, param):
asciidoc = '* '
paramname = param.find('name')
paramtype = param.find('type')
asciidoc += self.makeParameterName(paramname.text)
validextensionstructs = param.attrib.get('validextensionstructs')
if validextensionstructs is None:
asciidoc += ' must: be `NULL`'
else:
extensionstructs = validextensionstructs.split(',')
asciidoc += ' must: point to one of ' + extensionstructs[:-1].join(', ') + ' or ' + extensionstructs[-1] + 'if the extension that introduced them is enabled '
asciidoc += '\n'
return asciidoc
#
# Generate all the valid usage information for a given struct or command
def makeValidUsageStatements(self, cmd, blockname, params, usages):
# Start the asciidoc block for this
asciidoc = ''
handles = []
anyparentedhandlesoptional = False
parentdictionary = {}
arraylengths = set()
for param in params:
paramname = param.find('name')
paramtype = param.find('type')
# Get the type's category
typecategory = self.getTypeCategory(paramtype.text)
# Generate language to independently validate a parameter
if paramtype.text == 'VkStructureType' and paramname.text == 'sType':
asciidoc += self.makeStructureType(blockname, param)
elif paramtype.text == 'void' and paramname.text == 'pNext':
asciidoc += self.makeStructureExtensionPointer(param)
else:
asciidoc += self.createValidationLineForParameter(param, params, typecategory)
# Ensure that any parenting is properly validated, and list that a handle was found
if typecategory == 'handle':
# Don't detect a parent for return values!
if not self.paramIsPointer(param) or (param.text is not None and 'const' in param.text):
parent = self.getHandleParent(paramtype.text)
if parent is not None:
handles.append(param)
# If any param is optional, it affects the output
if self.isHandleOptional(param, params):
anyparentedhandlesoptional = True
# Find the first dispatchable parent
ancestor = parent
while ancestor is not None and not self.isHandleTypeDispatchable(ancestor):
ancestor = self.getHandleParent(ancestor)
# If one was found, add this parameter to the parent dictionary
if ancestor is not None:
if ancestor not in parentdictionary:
parentdictionary[ancestor] = []
if self.paramIsArray(param):
parentdictionary[ancestor].append('the elements of ' + self.makeParameterName(paramname.text))
else:
parentdictionary[ancestor].append(self.makeParameterName(paramname.text))
# Get the array length for this parameter
arraylength = param.attrib.get('len')
if arraylength is not None:
for onelength in arraylength.split(','):
arraylengths.add(onelength)
# For any vkQueue* functions, there might be queue type data
if 'vkQueue' in blockname:
# The queue type must be valid
queuetypes = cmd.attrib.get('queues')
if queuetypes is not None:
queuebits = []
for queuetype in re.findall(r'([^,]+)', queuetypes):
queuebits.append(queuetype.replace('_',' '))
asciidoc += '* '
asciidoc += 'The pname:queue must: support '
if len(queuebits) == 1:
asciidoc += queuebits[0]
else:
asciidoc += (', ').join(queuebits[:-1])
asciidoc += ' or '
asciidoc += queuebits[-1]
asciidoc += ' operations'
asciidoc += '\n'
if 'vkCmd' in blockname:
# The commandBuffer parameter must be being recorded
asciidoc += '* '
asciidoc += 'pname:commandBuffer must: be in the recording state'
asciidoc += '\n'
# The queue type must be valid
queuetypes = cmd.attrib.get('queues')
queuebits = []
for queuetype in re.findall(r'([^,]+)', queuetypes):
queuebits.append(queuetype.replace('_',' '))
asciidoc += '* '
asciidoc += 'The sname:VkCommandPool that pname:commandBuffer was allocated from must: support '
if len(queuebits) == 1:
asciidoc += queuebits[0]
else:
asciidoc += (', ').join(queuebits[:-1])
asciidoc += ' or '
asciidoc += queuebits[-1]
asciidoc += ' operations'
asciidoc += '\n'
# Must be called inside/outside a renderpass appropriately
renderpass = cmd.attrib.get('renderpass')
if renderpass != 'both':
asciidoc += '* This command must: only be called '
asciidoc += renderpass
asciidoc += ' of a render pass instance'
asciidoc += '\n'
# Must be in the right level command buffer
cmdbufferlevel = cmd.attrib.get('cmdbufferlevel')
if cmdbufferlevel != 'primary,secondary':
asciidoc += '* pname:commandBuffer must: be a '
asciidoc += cmdbufferlevel
asciidoc += ' sname:VkCommandBuffer'
asciidoc += '\n'
# Any non-optional arraylengths should specify they must be greater than 0
for param in params:
paramname = param.find('name')
for arraylength in arraylengths:
if paramname.text == arraylength and param.attrib.get('optional') is None:
# Get all the array dependencies
arrays = cmd.findall("param/[@len='" + arraylength + "'][@optional='true']")
# Get all the optional array dependencies, including those not generating validity for some reason
optionalarrays = cmd.findall("param/[@len='" + arraylength + "'][@optional='true']")
optionalarrays.extend(cmd.findall("param/[@len='" + arraylength + "'][@noautovalidity='true']"))
asciidoc += '* '
# Allow lengths to be arbitrary if all their dependents are optional
if len(optionalarrays) == len(arrays) and len(optionalarrays) != 0:
asciidoc += 'If '
if len(optionalarrays) > 1:
asciidoc += 'any of '
for array in optionalarrays[:-1]:
asciidoc += self.makeParameterName(optionalarrays.find('name').text)
asciidoc += ', '
if len(optionalarrays) > 1:
asciidoc += 'and '
asciidoc += self.makeParameterName(optionalarrays[-1].find('name').text)
asciidoc += ' are '
else:
asciidoc += self.makeParameterName(optionalarrays[-1].find('name').text)
asciidoc += ' is '
asciidoc += 'not `NULL`, '
if self.paramIsPointer(param):
asciidoc += 'the value referenced by '
else:
asciidoc += 'the value of '
elif self.paramIsPointer(param):
asciidoc += 'The value referenced by '
else:
asciidoc += 'The value of '
asciidoc += self.makeParameterName(arraylength)
asciidoc += ' must: be greater than `0`'
asciidoc += '\n'
# Find the parents of all objects referenced in this command
for param in handles:
asciidoc += self.makeAsciiDocHandleParent(param, params)
# Find the common ancestors of objects
noancestorscount = 0
while noancestorscount < len(parentdictionary):
noancestorscount = 0
oldparentdictionary = parentdictionary.copy()
for parent in oldparentdictionary.items():
ancestor = self.getHandleParent(parent[0])
while ancestor is not None and ancestor not in parentdictionary:
ancestor = self.getHandleParent(ancestor)
if ancestor is not None:
parentdictionary[ancestor] += parentdictionary.pop(parent[0])
else:
# No ancestors possible - so count it up
noancestorscount += 1
# Add validation language about common ancestors
for parent in parentdictionary.items():
if len(parent[1]) > 1:
parentlanguage = '* '
parentlanguage += 'Each of '
parentlanguage += ", ".join(parent[1][:-1])
parentlanguage += ' and '
parentlanguage += parent[1][-1]
if anyparentedhandlesoptional is True:
parentlanguage += ' that are valid handles'
parentlanguage += ' must: have been created, allocated or retrieved from the same '
parentlanguage += self.makeStructName(parent[0])
parentlanguage += '\n'
# Capitalize and add to the main language
asciidoc += parentlanguage
# Add in any plain-text validation language that's in the xml
for usage in usages:
asciidoc += '* '
asciidoc += usage.text
asciidoc += '\n'
# In case there's nothing to report, return None
if asciidoc == '':
return None
# Delimit the asciidoc block
return asciidoc
def makeThreadSafetyBlock(self, cmd, paramtext):
"""Generate C function pointer typedef for <command> Element"""
paramdecl = ''
# For any vkCmd* functions, the commandBuffer parameter must be being recorded
if cmd.find('proto/name') is not None and 'vkCmd' in cmd.find('proto/name'):
paramdecl += '* '
paramdecl += 'The sname:VkCommandPool that pname:commandBuffer was created from'
paramdecl += '\n'
# Find and add any parameters that are thread unsafe
explicitexternsyncparams = cmd.findall(paramtext + "[@externsync]")
if (explicitexternsyncparams is not None):
for param in explicitexternsyncparams:
externsyncattribs = param.attrib.get('externsync')
paramname = param.find('name')
for externsyncattrib in externsyncattribs.split(','):
paramdecl += '* '
paramdecl += 'Host access to '
if externsyncattrib == 'true':
if self.paramIsArray(param):
paramdecl += 'each member of ' + self.makeParameterName(paramname.text)
elif self.paramIsPointer(param):
paramdecl += 'the object referenced by ' + self.makeParameterName(paramname.text)
else:
paramdecl += self.makeParameterName(paramname.text)
else:
paramdecl += 'pname:'
paramdecl += externsyncattrib
paramdecl += ' must: be externally synchronized\n'
# Find and add any "implicit" parameters that are thread unsafe
implicitexternsyncparams = cmd.find('implicitexternsyncparams')
if (implicitexternsyncparams is not None):
for elem in implicitexternsyncparams:
paramdecl += '* '
paramdecl += 'Host access to '
paramdecl += elem.text
paramdecl += ' must: be externally synchronized\n'
if (paramdecl == ''):
return None
else:
return paramdecl
def makeCommandPropertiesTableEntry(self, cmd, name):
if 'vkCmd' in name:
# Must be called inside/outside a renderpass appropriately
cmdbufferlevel = cmd.attrib.get('cmdbufferlevel')
cmdbufferlevel = (' + \n').join(cmdbufferlevel.title().split(','))
renderpass = cmd.attrib.get('renderpass')
renderpass = renderpass.capitalize()
queues = cmd.attrib.get('queues')
queues = (' + \n').join(queues.upper().split(','))
return '|' + cmdbufferlevel + '|' + renderpass + '|' + queues
elif 'vkQueue' in name:
# Must be called inside/outside a renderpass appropriately
queues = cmd.attrib.get('queues')
if queues is None:
queues = 'Any'
else:
queues = (' + \n').join(queues.upper().split(','))
return '|-|-|' + queues
return None
def makeSuccessCodes(self, cmd, name):
successcodes = cmd.attrib.get('successcodes')
if successcodes is not None:
successcodeentry = ''
successcodes = successcodes.split(',')
return '* ' + '\n* '.join(successcodes)
return None
def makeErrorCodes(self, cmd, name):
errorcodes = cmd.attrib.get('errorcodes')
if errorcodes is not None:
errorcodeentry = ''
errorcodes = errorcodes.split(',')
return '* ' + '\n* '.join(errorcodes)
return None
#
# Command generation
def genCmd(self, cmdinfo, name):
OutputGenerator.genCmd(self, cmdinfo, name)
#
# Get all thh parameters
params = cmdinfo.elem.findall('param')
usages = cmdinfo.elem.findall('validity/usage')
validity = self.makeValidUsageStatements(cmdinfo.elem, name, params, usages)
threadsafety = self.makeThreadSafetyBlock(cmdinfo.elem, 'param')
commandpropertiesentry = self.makeCommandPropertiesTableEntry(cmdinfo.elem, name)
successcodes = self.makeSuccessCodes(cmdinfo.elem, name)
errorcodes = self.makeErrorCodes(cmdinfo.elem, name)
self.writeInclude('validity/protos', name, validity, threadsafety, commandpropertiesentry, successcodes, errorcodes)
#
# Struct Generation
def genStruct(self, typeinfo, typename):
OutputGenerator.genStruct(self, typeinfo, typename)
# Anything that's only ever returned can't be set by the user, so shouldn't have any validity information.
if typeinfo.elem.attrib.get('returnedonly') is None:
params = typeinfo.elem.findall('member')
usages = typeinfo.elem.findall('validity/usage')
validity = self.makeValidUsageStatements(typeinfo.elem, typename, params, usages)
threadsafety = self.makeThreadSafetyBlock(typeinfo.elem, 'member')
self.writeInclude('validity/structs', typename, validity, threadsafety, None, None, None)
else:
# Still generate files for return only structs, in case this state changes later
self.writeInclude('validity/structs', typename, None, None, None, None, None)
#
# Type Generation
def genType(self, typeinfo, typename):
OutputGenerator.genType(self, typeinfo, typename)
category = typeinfo.elem.get('category')
if (category == 'struct' or category == 'union'):
self.genStruct(typeinfo, typename)
# HostSynchronizationOutputGenerator - subclass of OutputGenerator.
# Generates AsciiDoc includes of the externsync parameter table for the
# fundamentals chapter of the Vulkan specification. Similar to
# DocOutputGenerator.
#
# ---- methods ----
# HostSynchronizationOutputGenerator(errFile, warnFile, diagFile) - args as for
# OutputGenerator. Defines additional internal state.
# ---- methods overriding base class ----
# genCmd(cmdinfo)
class HostSynchronizationOutputGenerator(OutputGenerator):
# Generate Host Synchronized Parameters in a table at the top of the spec
def __init__(self,
errFile = sys.stderr,
warnFile = sys.stderr,
diagFile = sys.stdout):
OutputGenerator.__init__(self, errFile, warnFile, diagFile)
threadsafety = {'parameters': '', 'parameterlists': '', 'implicit': ''}
def makeParameterName(self, name):
return 'pname:' + name
def makeFLink(self, name):
return 'flink:' + name
#
# Generate an include file
#
# directory - subdirectory to put file in
# basename - base name of the file
# contents - contents of the file (Asciidoc boilerplate aside)
def writeInclude(self):
if self.threadsafety['parameters'] is not None:
# Create file
filename = self.genOpts.genDirectory + '/' + self.genOpts.filename + '/parameters.txt'
self.logMsg('diag', '# Generating include file:', filename)
fp = open(filename, 'w')
# Host Synchronization
write('.Externally Synchronized Parameters', file=fp)
write('*' * 80, file=fp)
write(self.threadsafety['parameters'], file=fp, end='')
write('*' * 80, file=fp)
write('', file=fp)
if self.threadsafety['parameterlists'] is not None:
# Create file
filename = self.genOpts.genDirectory + '/' + self.genOpts.filename + '/parameterlists.txt'
self.logMsg('diag', '# Generating include file:', filename)
fp = open(filename, 'w')
# Host Synchronization
write('.Externally Synchronized Parameter Lists', file=fp)
write('*' * 80, file=fp)
write(self.threadsafety['parameterlists'], file=fp, end='')
write('*' * 80, file=fp)
write('', file=fp)
if self.threadsafety['implicit'] is not None:
# Create file
filename = self.genOpts.genDirectory + '/' + self.genOpts.filename + '/implicit.txt'
self.logMsg('diag', '# Generating include file:', filename)
fp = open(filename, 'w')
# Host Synchronization
write('.Implicit Externally Synchronized Parameters', file=fp)
write('*' * 80, file=fp)
write(self.threadsafety['implicit'], file=fp, end='')
write('*' * 80, file=fp)
write('', file=fp)
fp.close()
#
# Check if the parameter passed in is a pointer to an array
def paramIsArray(self, param):
return param.attrib.get('len') is not None
# Check if the parameter passed in is a pointer
def paramIsPointer(self, param):
ispointer = False
paramtype = param.find('type')
if paramtype.tail is not None and '*' in paramtype.tail:
ispointer = True
return ispointer
# Turn the "name[].member[]" notation into plain English.
def makeThreadDereferenceHumanReadable(self, dereference):
matches = re.findall(r"[\w]+[^\w]*",dereference)
stringval = ''
for match in reversed(matches):
if '->' in match or '.' in match:
stringval += 'member of '
if '[]' in match:
stringval += 'each element of '
stringval += 'the '
stringval += self.makeParameterName(re.findall(r"[\w]+",match)[0])
stringval += ' '
stringval += 'parameter'
return stringval[0].upper() + stringval[1:]
def makeThreadSafetyBlocks(self, cmd, paramtext):
protoname = cmd.find('proto/name').text
# Find and add any parameters that are thread unsafe
explicitexternsyncparams = cmd.findall(paramtext + "[@externsync]")
if (explicitexternsyncparams is not None):
for param in explicitexternsyncparams:
externsyncattribs = param.attrib.get('externsync')
paramname = param.find('name')
for externsyncattrib in externsyncattribs.split(','):
tempstring = '* '
if externsyncattrib == 'true':
if self.paramIsArray(param):
tempstring += 'Each element of the '
elif self.paramIsPointer(param):
tempstring += 'The object referenced by the '
else:
tempstring += 'The '
tempstring += self.makeParameterName(paramname.text)
tempstring += ' parameter'
else:
tempstring += self.makeThreadDereferenceHumanReadable(externsyncattrib)
tempstring += ' in '
tempstring += self.makeFLink(protoname)
tempstring += '\n'
if ' element of ' in tempstring:
self.threadsafety['parameterlists'] += tempstring
else:
self.threadsafety['parameters'] += tempstring
# Find and add any "implicit" parameters that are thread unsafe
implicitexternsyncparams = cmd.find('implicitexternsyncparams')
if (implicitexternsyncparams is not None):
for elem in implicitexternsyncparams:
self.threadsafety['implicit'] += '* '
self.threadsafety['implicit'] += elem.text[0].upper()
self.threadsafety['implicit'] += elem.text[1:]
self.threadsafety['implicit'] += ' in '
self.threadsafety['implicit'] += self.makeFLink(protoname)
self.threadsafety['implicit'] += '\n'
# For any vkCmd* functions, the commandBuffer parameter must be being recorded
if protoname is not None and 'vkCmd' in protoname:
self.threadsafety['implicit'] += '* '
self.threadsafety['implicit'] += 'The sname:VkCommandPool that pname:commandBuffer was allocated from, in '
self.threadsafety['implicit'] += self.makeFLink(protoname)
self.threadsafety['implicit'] += '\n'
#
# Command generation
def genCmd(self, cmdinfo, name):
OutputGenerator.genCmd(self, cmdinfo, name)
#
# Get all thh parameters
params = cmdinfo.elem.findall('param')
usages = cmdinfo.elem.findall('validity/usage')
self.makeThreadSafetyBlocks(cmdinfo.elem, 'param')
self.writeInclude()
# ThreadOutputGenerator - subclass of OutputGenerator.
# Generates Thread checking framework
#
# ---- methods ----
# ThreadOutputGenerator(errFile, warnFile, diagFile) - args as for
# OutputGenerator. Defines additional internal state.
# ---- methods overriding base class ----
# beginFile(genOpts)
# endFile()
# beginFeature(interface, emit)
# endFeature()
# genType(typeinfo,name)
# genStruct(typeinfo,name)
# genGroup(groupinfo,name)
# genEnum(enuminfo, name)
# genCmd(cmdinfo)
class ThreadOutputGenerator(OutputGenerator):
"""Generate specified API interfaces in a specific style, such as a C header"""
# This is an ordered list of sections in the header file.
TYPE_SECTIONS = ['include', 'define', 'basetype', 'handle', 'enum',
'group', 'bitmask', 'funcpointer', 'struct']
ALL_SECTIONS = TYPE_SECTIONS + ['command']
def __init__(self,
errFile = sys.stderr,
warnFile = sys.stderr,
diagFile = sys.stdout):
OutputGenerator.__init__(self, errFile, warnFile, diagFile)
# Internal state - accumulators for different inner block text
self.sections = dict([(section, []) for section in self.ALL_SECTIONS])
self.intercepts = []
# Check if the parameter passed in is a pointer to an array
def paramIsArray(self, param):
return param.attrib.get('len') is not None
# Check if the parameter passed in is a pointer
def paramIsPointer(self, param):
ispointer = False
for elem in param:
#write('paramIsPointer '+elem.text, file=sys.stderr)
#write('elem.tag '+elem.tag, file=sys.stderr)
#if (elem.tail is None):
# write('elem.tail is None', file=sys.stderr)
#else:
# write('elem.tail '+elem.tail, file=sys.stderr)
if ((elem.tag is not 'type') and (elem.tail is not None)) and '*' in elem.tail:
ispointer = True
# write('is pointer', file=sys.stderr)
return ispointer
def makeThreadUseBlock(self, cmd, functionprefix):
"""Generate C function pointer typedef for <command> Element"""
paramdecl = ''
thread_check_dispatchable_objects = [
"VkCommandBuffer",
"VkDevice",
"VkInstance",
"VkQueue",
]
thread_check_nondispatchable_objects = [
"VkBuffer",
"VkBufferView",
"VkCommandPool",
"VkDescriptorPool",
"VkDescriptorSetLayout",
"VkDeviceMemory",
"VkEvent",
"VkFence",
"VkFramebuffer",
"VkImage",
"VkImageView",
"VkPipeline",
"VkPipelineCache",
"VkPipelineLayout",
"VkQueryPool",
"VkRenderPass",
"VkSampler",
"VkSemaphore",
"VkShaderModule",
]
# Find and add any parameters that are thread unsafe
params = cmd.findall('param')
for param in params:
paramname = param.find('name')
if False: # self.paramIsPointer(param):
paramdecl += ' // not watching use of pointer ' + paramname.text + '\n'
else:
externsync = param.attrib.get('externsync')
if externsync == 'true':
if self.paramIsArray(param):
paramdecl += ' for (int index=0;index<' + param.attrib.get('len') + ';index++) {\n'
paramdecl += ' ' + functionprefix + 'WriteObject(my_data, ' + paramname.text + '[index]);\n'
paramdecl += ' }\n'
else:
paramdecl += ' ' + functionprefix + 'WriteObject(my_data, ' + paramname.text + ');\n'
elif (param.attrib.get('externsync')):
if self.paramIsArray(param):
# Externsync can list pointers to arrays of members to synchronize
paramdecl += ' for (int index=0;index<' + param.attrib.get('len') + ';index++) {\n'
for member in externsync.split(","):
# Replace first empty [] in member name with index
element = member.replace('[]','[index]',1)
if '[]' in element:
# Replace any second empty [] in element name with
# inner array index based on mapping array names like
# "pSomeThings[]" to "someThingCount" array size.
# This could be more robust by mapping a param member
# name to a struct type and "len" attribute.
limit = element[0:element.find('s[]')] + 'Count'
dotp = limit.rfind('.p')
limit = limit[0:dotp+1] + limit[dotp+2:dotp+3].lower() + limit[dotp+3:]
paramdecl += ' for(int index2=0;index2<'+limit+';index2++)'
element = element.replace('[]','[index2]')
paramdecl += ' ' + functionprefix + 'WriteObject(my_data, ' + element + ');\n'
paramdecl += ' }\n'
else:
# externsync can list members to synchronize
for member in externsync.split(","):
paramdecl += ' ' + functionprefix + 'WriteObject(my_data, ' + member + ');\n'
else:
paramtype = param.find('type')
if paramtype is not None:
paramtype = paramtype.text
else:
paramtype = 'None'
if paramtype in thread_check_dispatchable_objects or paramtype in thread_check_nondispatchable_objects:
if self.paramIsArray(param) and ('pPipelines' != paramname.text):
paramdecl += ' for (int index=0;index<' + param.attrib.get('len') + ';index++) {\n'
paramdecl += ' ' + functionprefix + 'ReadObject(my_data, ' + paramname.text + '[index]);\n'
paramdecl += ' }\n'
elif not self.paramIsPointer(param):
# Pointer params are often being created.
# They are not being read from.
paramdecl += ' ' + functionprefix + 'ReadObject(my_data, ' + paramname.text + ');\n'
explicitexternsyncparams = cmd.findall("param[@externsync]")
if (explicitexternsyncparams is not None):
for param in explicitexternsyncparams:
externsyncattrib = param.attrib.get('externsync')
paramname = param.find('name')
paramdecl += '// Host access to '
if externsyncattrib == 'true':
if self.paramIsArray(param):
paramdecl += 'each member of ' + paramname.text
elif self.paramIsPointer(param):
paramdecl += 'the object referenced by ' + paramname.text
else:
paramdecl += paramname.text
else:
paramdecl += externsyncattrib
paramdecl += ' must be externally synchronized\n'
# Find and add any "implicit" parameters that are thread unsafe
implicitexternsyncparams = cmd.find('implicitexternsyncparams')
if (implicitexternsyncparams is not None):
for elem in implicitexternsyncparams:
paramdecl += ' // '
paramdecl += elem.text
paramdecl += ' must be externally synchronized between host accesses\n'
if (paramdecl == ''):
return None
else:
return paramdecl
def beginFile(self, genOpts):
OutputGenerator.beginFile(self, genOpts)
# C-specific
#
# Multiple inclusion protection & C++ wrappers.
if (genOpts.protectFile and self.genOpts.filename):
headerSym = '__' + re.sub('\.h', '_h_', os.path.basename(self.genOpts.filename))
write('#ifndef', headerSym, file=self.outFile)
write('#define', headerSym, '1', file=self.outFile)
self.newline()
write('#ifdef __cplusplus', file=self.outFile)
write('extern "C" {', file=self.outFile)
write('#endif', file=self.outFile)
self.newline()
#
# User-supplied prefix text, if any (list of strings)
if (genOpts.prefixText):
for s in genOpts.prefixText:
write(s, file=self.outFile)
def endFile(self):
# C-specific
# Finish C++ wrapper and multiple inclusion protection
self.newline()
# record intercepted procedures
write('// intercepts', file=self.outFile)
write('struct { const char* name; PFN_vkVoidFunction pFunc;} procmap[] = {', file=self.outFile)
write('\n'.join(self.intercepts), file=self.outFile)
write('};\n', file=self.outFile)
self.newline()
write('#ifdef __cplusplus', file=self.outFile)
write('}', file=self.outFile)
write('#endif', file=self.outFile)
if (self.genOpts.protectFile and self.genOpts.filename):
self.newline()
write('#endif', file=self.outFile)
# Finish processing in superclass
OutputGenerator.endFile(self)
def beginFeature(self, interface, emit):
#write('// starting beginFeature', file=self.outFile)
# Start processing in superclass
OutputGenerator.beginFeature(self, interface, emit)
# C-specific
# Accumulate includes, defines, types, enums, function pointer typedefs,
# end function prototypes separately for this feature. They're only
# printed in endFeature().
self.sections = dict([(section, []) for section in self.ALL_SECTIONS])
#write('// ending beginFeature', file=self.outFile)
def endFeature(self):
# C-specific
# Actually write the interface to the output file.
#write('// starting endFeature', file=self.outFile)
if (self.emit):
self.newline()
if (self.genOpts.protectFeature):
write('#ifndef', self.featureName, file=self.outFile)
# If type declarations are needed by other features based on
# this one, it may be necessary to suppress the ExtraProtect,
# or move it below the 'for section...' loop.
#write('// endFeature looking at self.featureExtraProtect', file=self.outFile)
if (self.featureExtraProtect != None):
write('#ifdef', self.featureExtraProtect, file=self.outFile)
#write('#define', self.featureName, '1', file=self.outFile)
for section in self.TYPE_SECTIONS:
#write('// endFeature writing section'+section, file=self.outFile)
contents = self.sections[section]
if contents:
write('\n'.join(contents), file=self.outFile)
self.newline()
#write('// endFeature looking at self.sections[command]', file=self.outFile)
if (self.sections['command']):
write('\n'.join(self.sections['command']), end='', file=self.outFile)
self.newline()
if (self.featureExtraProtect != None):
write('#endif /*', self.featureExtraProtect, '*/', file=self.outFile)
if (self.genOpts.protectFeature):
write('#endif /*', self.featureName, '*/', file=self.outFile)
# Finish processing in superclass
OutputGenerator.endFeature(self)
#write('// ending endFeature', file=self.outFile)
#
# Append a definition to the specified section
def appendSection(self, section, text):
# self.sections[section].append('SECTION: ' + section + '\n')
self.sections[section].append(text)
#
# Type generation
def genType(self, typeinfo, name):
pass
#
# Struct (e.g. C "struct" type) generation.
# This is a special case of the <type> tag where the contents are
# interpreted as a set of <member> tags instead of freeform C
# C type declarations. The <member> tags are just like <param>
# tags - they are a declaration of a struct or union member.
# Only simple member declarations are supported (no nested
# structs etc.)
def genStruct(self, typeinfo, typeName):
OutputGenerator.genStruct(self, typeinfo, typeName)
body = 'typedef ' + typeinfo.elem.get('category') + ' ' + typeName + ' {\n'
# paramdecl = self.makeCParamDecl(typeinfo.elem, self.genOpts.alignFuncParam)
for member in typeinfo.elem.findall('.//member'):
body += self.makeCParamDecl(member, self.genOpts.alignFuncParam)
body += ';\n'
body += '} ' + typeName + ';\n'
self.appendSection('struct', body)
#
# Group (e.g. C "enum" type) generation.
# These are concatenated together with other types.
def genGroup(self, groupinfo, groupName):
pass
# Enumerant generation
# <enum> tags may specify their values in several ways, but are usually
# just integers.
def genEnum(self, enuminfo, name):
pass
#
# Command generation
def genCmd(self, cmdinfo, name):
special_functions = [
'vkGetDeviceProcAddr',
'vkGetInstanceProcAddr',
'vkCreateDevice',
'vkDestroyDevice',
'vkCreateInstance',
'vkDestroyInstance',
'vkEnumerateInstanceLayerProperties',
'vkEnumerateInstanceExtensionProperties',
'vkAllocateCommandBuffers',
'vkFreeCommandBuffers',
'vkCreateDebugReportCallbackEXT',
'vkDestroyDebugReportCallbackEXT',
]
if name in special_functions:
self.intercepts += [ ' {"%s", reinterpret_cast<PFN_vkVoidFunction>(%s)},' % (name,name) ]
return
if "KHR" in name:
self.appendSection('command', '// TODO - not wrapping KHR function ' + name)
return
# Determine first if this function needs to be intercepted
startthreadsafety = self.makeThreadUseBlock(cmdinfo.elem, 'start')
if startthreadsafety is None:
return
finishthreadsafety = self.makeThreadUseBlock(cmdinfo.elem, 'finish')
# record that the function will be intercepted
if (self.featureExtraProtect != None):
self.intercepts += [ '#ifdef %s' % self.featureExtraProtect ]
self.intercepts += [ ' {"%s", reinterpret_cast<PFN_vkVoidFunction>(%s)},' % (name,name) ]
if (self.featureExtraProtect != None):
self.intercepts += [ '#endif' ]
OutputGenerator.genCmd(self, cmdinfo, name)
#
decls = self.makeCDecls(cmdinfo.elem)
self.appendSection('command', '')
self.appendSection('command', decls[0][:-1])
self.appendSection('command', '{')
# setup common to call wrappers
# first parameter is always dispatchable
dispatchable_type = cmdinfo.elem.find('param/type').text
dispatchable_name = cmdinfo.elem.find('param/name').text
self.appendSection('command', ' dispatch_key key = get_dispatch_key('+dispatchable_name+');')
self.appendSection('command', ' layer_data *my_data = get_my_data_ptr(key, layer_data_map);')
if dispatchable_type in ["VkPhysicalDevice", "VkInstance"]:
self.appendSection('command', ' VkLayerInstanceDispatchTable *pTable = my_data->instance_dispatch_table;')
else:
self.appendSection('command', ' VkLayerDispatchTable *pTable = my_data->device_dispatch_table;')
# Declare result variable, if any.
resulttype = cmdinfo.elem.find('proto/type')
if (resulttype != None and resulttype.text == 'void'):
resulttype = None
if (resulttype != None):
self.appendSection('command', ' ' + resulttype.text + ' result;')
assignresult = 'result = '
else:
assignresult = ''
self.appendSection('command', str(startthreadsafety))
params = cmdinfo.elem.findall('param/name')
paramstext = ','.join([str(param.text) for param in params])
API = cmdinfo.elem.attrib.get('name').replace('vk','pTable->',1)
self.appendSection('command', ' ' + assignresult + API + '(' + paramstext + ');')
self.appendSection('command', str(finishthreadsafety))
# Return result variable, if any.
if (resulttype != None):
self.appendSection('command', ' return result;')
self.appendSection('command', '}')
# ParamCheckerOutputGenerator - subclass of OutputGenerator.
# Generates param checker layer code.
#
# ---- methods ----
# ParamCheckerOutputGenerator(errFile, warnFile, diagFile) - args as for
# OutputGenerator. Defines additional internal state.
# ---- methods overriding base class ----
# beginFile(genOpts)
# endFile()
# beginFeature(interface, emit)
# endFeature()
# genType(typeinfo,name)
# genStruct(typeinfo,name)
# genGroup(groupinfo,name)
# genEnum(enuminfo, name)
# genCmd(cmdinfo)
class ParamCheckerOutputGenerator(OutputGenerator):
"""Generate ParamChecker code based on XML element attributes"""
# This is an ordered list of sections in the header file.
ALL_SECTIONS = ['command']
def __init__(self,
errFile = sys.stderr,
warnFile = sys.stderr,
diagFile = sys.stdout):
OutputGenerator.__init__(self, errFile, warnFile, diagFile)
self.INDENT_SPACES = 4
# Commands to ignore
self.blacklist = [
'vkGetInstanceProcAddr',
'vkGetDeviceProcAddr',
'vkEnumerateInstanceLayerProperties',
'vkEnumerateInstanceExtensionsProperties',
'vkEnumerateDeviceLayerProperties',
'vkEnumerateDeviceExtensionsProperties',
'vkCreateDebugReportCallbackEXT',
'vkDebugReportMessageEXT']
# Internal state - accumulators for different inner block text
self.sections = dict([(section, []) for section in self.ALL_SECTIONS])
self.structNames = [] # List of Vulkan struct typenames
self.stypes = [] # Values from the VkStructureType enumeration
self.structTypes = dict() # Map of Vulkan struct typename to required VkStructureType
self.commands = [] # List of CommandData records for all Vulkan commands
self.structMembers = [] # List of StructMemberData records for all Vulkan structs
self.validatedStructs = set() # Set of structs containing members that require validation
# Named tuples to store struct and command data
self.StructType = namedtuple('StructType', ['name', 'value'])
self.CommandParam = namedtuple('CommandParam', ['type', 'name', 'ispointer', 'isstaticarray', 'isoptional', 'iscount', 'len', 'extstructs', 'cdecl'])
self.CommandData = namedtuple('CommandData', ['name', 'params', 'cdecl'])
self.StructMemberData = namedtuple('StructMemberData', ['name', 'members'])
#
def incIndent(self, indent):
inc = ' ' * self.INDENT_SPACES
if indent:
return indent + inc
return inc
#
def decIndent(self, indent):
if indent and (len(indent) > self.INDENT_SPACES):
return indent[:-self.INDENT_SPACES]
return ''
#
def beginFile(self, genOpts):
OutputGenerator.beginFile(self, genOpts)
# C-specific
#
# User-supplied prefix text, if any (list of strings)
if (genOpts.prefixText):
for s in genOpts.prefixText:
write(s, file=self.outFile)
#
# Multiple inclusion protection & C++ wrappers.
if (genOpts.protectFile and self.genOpts.filename):
headerSym = re.sub('\.h', '_H', os.path.basename(self.genOpts.filename)).upper()
write('#ifndef', headerSym, file=self.outFile)
write('#define', headerSym, '1', file=self.outFile)
self.newline()
#
# Headers
write('#include "vulkan/vulkan.h"', file=self.outFile)
write('#include "vk_layer_extension_utils.h"', file=self.outFile)
write('#include "parameter_validation_utils.h"', file=self.outFile)
#
# Macros
self.newline()
write('#ifndef UNUSED_PARAMETER', file=self.outFile)
write('#define UNUSED_PARAMETER(x) (void)(x)', file=self.outFile)
write('#endif // UNUSED_PARAMETER', file=self.outFile)
def endFile(self):
# C-specific
# Finish C++ wrapper and multiple inclusion protection
self.newline()
if (self.genOpts.protectFile and self.genOpts.filename):
self.newline()
write('#endif', file=self.outFile)
# Finish processing in superclass
OutputGenerator.endFile(self)
def beginFeature(self, interface, emit):
# Start processing in superclass
OutputGenerator.beginFeature(self, interface, emit)
# C-specific
# Accumulate includes, defines, types, enums, function pointer typedefs,
# end function prototypes separately for this feature. They're only
# printed in endFeature().
self.sections = dict([(section, []) for section in self.ALL_SECTIONS])
self.structNames = []
self.stypes = []
self.structTypes = dict()
self.commands = []
self.structMembers = []
self.validatedStructs = set()
def endFeature(self):
# C-specific
# Actually write the interface to the output file.
if (self.emit):
self.newline()
# If type declarations are needed by other features based on
# this one, it may be necessary to suppress the ExtraProtect,
# or move it below the 'for section...' loop.
if (self.featureExtraProtect != None):
write('#ifdef', self.featureExtraProtect, file=self.outFile)
# Generate the struct member checking code from the captured data
self.prepareStructMemberData()
self.processStructMemberData()
# Generate the command parameter checking code from the captured data
self.processCmdData()
if (self.sections['command']):
if (self.genOpts.protectProto):
write(self.genOpts.protectProto,
self.genOpts.protectProtoStr, file=self.outFile)
write('\n'.join(self.sections['command']), end='', file=self.outFile)
if (self.featureExtraProtect != None):
write('#endif /*', self.featureExtraProtect, '*/', file=self.outFile)
else:
self.newline()
# Finish processing in superclass
OutputGenerator.endFeature(self)
#
# Append a definition to the specified section
def appendSection(self, section, text):
# self.sections[section].append('SECTION: ' + section + '\n')
self.sections[section].append(text)
#
# Type generation
def genType(self, typeinfo, name):
OutputGenerator.genType(self, typeinfo, name)
typeElem = typeinfo.elem
# If the type is a struct type, traverse the imbedded <member> tags
# generating a structure. Otherwise, emit the tag text.
category = typeElem.get('category')
if (category == 'struct' or category == 'union'):
self.structNames.append(name)
self.genStruct(typeinfo, name)
#
# Struct parameter check generation.
# This is a special case of the <type> tag where the contents are
# interpreted as a set of <member> tags instead of freeform C
# C type declarations. The <member> tags are just like <param>
# tags - they are a declaration of a struct or union member.
# Only simple member declarations are supported (no nested
# structs etc.)
def genStruct(self, typeinfo, typeName):
OutputGenerator.genStruct(self, typeinfo, typeName)
members = typeinfo.elem.findall('.//member')
#
# Iterate over members once to get length parameters for arrays
lens = set()
for member in members:
len = self.getLen(member)
if len:
lens.add(len)
#
# Generate member info
membersInfo = []
for member in members:
# Get the member's type and name
info = self.getTypeNameTuple(member)
type = info[0]
name = info[1]
stypeValue = ''
# Process VkStructureType
if type == 'VkStructureType':
# Extract the required struct type value from the comments
# embedded in the original text defining the 'typeinfo' element
rawXml = etree.tostring(typeinfo.elem).decode('ascii')
result = re.search(r'VK_STRUCTURE_TYPE_\w+', rawXml)
if result:
value = result.group(0)
# Make sure value is valid
#if value not in self.stypes:
# print('WARNING: {} is not part of the VkStructureType enumeration [{}]'.format(value, typeName))
else:
value = '<ERROR>'
# Store the required type value
self.structTypes[typeName] = self.StructType(name=name, value=value)
#
# Store pointer/array/string info
# Check for parameter name in lens set
iscount = False
if name in lens:
iscount = True
# The pNext members are not tagged as optional, but are treated as
# optional for parameter NULL checks. Static array members
# are also treated as optional to skip NULL pointer validation, as
# they won't be NULL.
isstaticarray = self.paramIsStaticArray(member)
isoptional = False
if self.paramIsOptional(member) or (name == 'pNext') or (isstaticarray):
isoptional = True
membersInfo.append(self.CommandParam(type=type, name=name,
ispointer=self.paramIsPointer(member),
isstaticarray=isstaticarray,
isoptional=isoptional,
iscount=iscount,
len=self.getLen(member),
extstructs=member.attrib.get('validextensionstructs') if name == 'pNext' else None,
cdecl=self.makeCParamDecl(member, 0)))
self.structMembers.append(self.StructMemberData(name=typeName, members=membersInfo))
#
# Capture group (e.g. C "enum" type) info to be used for
# param check code generation.
# These are concatenated together with other types.
def genGroup(self, groupinfo, groupName):
OutputGenerator.genGroup(self, groupinfo, groupName)
if groupName == 'VkStructureType':
groupElem = groupinfo.elem
for elem in groupElem.findall('enum'):
name = elem.get('name')
self.stypes.append(name)
#
# Capture command parameter info to be used for param
# check code generation.
def genCmd(self, cmdinfo, name):
OutputGenerator.genCmd(self, cmdinfo, name)
if name not in self.blacklist:
params = cmdinfo.elem.findall('param')
# Get list of array lengths
lens = set()
for param in params:
len = self.getLen(param)
if len:
lens.add(len)
# Get param info
paramsInfo = []
for param in params:
paramInfo = self.getTypeNameTuple(param)
# Check for parameter name in lens set
iscount = False
if paramInfo[1] in lens:
iscount = True
paramsInfo.append(self.CommandParam(type=paramInfo[0], name=paramInfo[1],
ispointer=self.paramIsPointer(param),
isstaticarray=self.paramIsStaticArray(param),
isoptional=self.paramIsOptional(param),
iscount=iscount,
len=self.getLen(param),
extstructs=None,
cdecl=self.makeCParamDecl(param, 0)))
self.commands.append(self.CommandData(name=name, params=paramsInfo, cdecl=self.makeCDecls(cmdinfo.elem)[0]))
#
# Check if the parameter passed in is a pointer
def paramIsPointer(self, param):
ispointer = 0
paramtype = param.find('type')
if (paramtype.tail is not None) and ('*' in paramtype.tail):
ispointer = paramtype.tail.count('*')
elif paramtype.text[:4] == 'PFN_':
# Treat function pointer typedefs as a pointer to a single value
ispointer = 1
return ispointer
#
# Check if the parameter passed in is a static array
def paramIsStaticArray(self, param):
isstaticarray = 0
paramname = param.find('name')
if (paramname.tail is not None) and ('[' in paramname.tail):
isstaticarray = paramname.tail.count('[')
return isstaticarray
#
# Check if the parameter passed in is optional
# Returns a list of Boolean values for comma separated len attributes (len='false,true')
def paramIsOptional(self, param):
# See if the handle is optional
isoptional = False
# Simple, if it's optional, return true
optString = param.attrib.get('optional')
if optString:
if optString == 'true':
isoptional = True
elif ',' in optString:
opts = []
for opt in optString.split(','):
val = opt.strip()
if val == 'true':
opts.append(True)
elif val == 'false':
opts.append(False)
else:
print('Unrecognized len attribute value',val)
isoptional = opts
return isoptional
#
# Retrieve the value of the len tag
def getLen(self, param):
result = None
len = param.attrib.get('len')
if len and len != 'null-terminated':
# For string arrays, 'len' can look like 'count,null-terminated',
# indicating that we have a null terminated array of strings. We
# strip the null-terminated from the 'len' field and only return
# the parameter specifying the string count
if 'null-terminated' in len:
result = len.split(',')[0]
else:
result = len
return result
#
# Retrieve the type and name for a parameter
def getTypeNameTuple(self, param):
type = ''
name = ''
for elem in param:
if elem.tag == 'type':
type = noneStr(elem.text)
elif elem.tag == 'name':
name = noneStr(elem.text)
return (type, name)
#
# Find a named parameter in a parameter list
def getParamByName(self, params, name):
for param in params:
if param.name == name:
return param
return None
#
# Get the length paramater record for the specified parameter name
def getLenParam(self, params, name):
lenParam = None
if name:
if '->' in name:
# The count is obtained by dereferencing a member of a struct parameter
lenParam = self.CommandParam(name=name, iscount=True, ispointer=False, isoptional=False, type=None, len=None, isstaticarray=None, extstructs=None, cdecl=None)
elif 'latexmath' in name:
result = re.search('mathit\{(\w+)\}', name)
lenParam = self.getParamByName(params, result.group(1))
elif '/' in name:
# Len specified as an equation such as dataSize/4
lenParam = self.getParamByName(params, name.split('/')[0])
else:
lenParam = self.getParamByName(params, name)
return lenParam
#
# Convert a vulkan.h command declaration into a parameter_validation.h definition
def getCmdDef(self, cmd):
#
# Strip the trailing ';' and split into individual lines
lines = cmd.cdecl[:-1].split('\n')
# Replace Vulkan prototype
lines[0] = 'static VkBool32 parameter_validation_' + cmd.name + '('
# Replace the first argument with debug_report_data, when the first
# argument is a handle (not vkCreateInstance)
reportData = ' debug_report_data*'.ljust(self.genOpts.alignFuncParam) + 'report_data,'
if cmd.name != 'vkCreateInstance':
lines[1] = reportData
else:
lines.insert(1, reportData)
return '\n'.join(lines)
#
# Generate the code to check for a NULL dereference before calling the
# validation function
def genCheckedLengthCall(self, indent, name, expr):
count = name.count('->')
if count:
checkedExpr = ''
localIndent = indent
elements = name.split('->')
# Open the if expression blocks
for i in range(0, count):
checkedExpr += localIndent + 'if ({} != NULL) {{\n'.format('->'.join(elements[0:i+1]))
localIndent = self.incIndent(localIndent)
# Add the validation expression
checkedExpr += localIndent + expr
# Close the if blocks
for i in range(0, count):
localIndent = self.decIndent(localIndent)
checkedExpr += localIndent + '}\n'
return checkedExpr
# No if statements were required
return indent + expr
#
# Generate the parameter checking code
def genFuncBody(self, indent, name, values, valuePrefix, variablePrefix, structName):
funcBody = ''
unused = []
for value in values:
checkExpr = '' # Code to check the current parameter
#
# Check for NULL pointers, ignore the inout count parameters that
# will be validated with their associated array
if (value.ispointer or value.isstaticarray) and not value.iscount:
#
# Generate the full name of the value, which will be printed in
# the error message, by adding the variable prefix to the
# value name
valueDisplayName = '(std::string({}) + std::string("{}")).c_str()'.format(variablePrefix, value.name) if variablePrefix else '"{}"'.format(value.name)
#
# Parameters for function argument generation
req = 'VK_TRUE' # Paramerter can be NULL
cpReq = 'VK_TRUE' # Count pointer can be NULL
cvReq = 'VK_TRUE' # Count value can be 0
lenParam = None
#
# Generate required/optional parameter strings for the pointer and count values
if value.isoptional:
req = 'VK_FALSE'
if value.len:
# The parameter is an array with an explicit count parameter
lenParam = self.getLenParam(values, value.len)
if not lenParam: print(value.len)
if lenParam.ispointer:
# Count parameters that are pointers are inout
if type(lenParam.isoptional) is list:
if lenParam.isoptional[0]:
cpReq = 'VK_FALSE'
if lenParam.isoptional[1]:
cvReq = 'VK_FALSE'
else:
if lenParam.isoptional:
cpReq = 'VK_FALSE'
else:
if lenParam.isoptional:
cvReq = 'VK_FALSE'
#
# If this is a pointer to a struct with an sType field, verify the type
if value.type in self.structTypes:
stype = self.structTypes[value.type]
if lenParam:
# This is an array
if lenParam.ispointer:
# When the length parameter is a pointer, there is an extra Boolean parameter in the function call to indicate if it is required
checkExpr = 'skipCall |= validate_struct_type_array(report_data, {}, "{ln}", {dn}, "{sv}", {pf}{ln}, {pf}{vn}, {sv}, {}, {}, {});\n'.format(name, cpReq, cvReq, req, ln=lenParam.name, dn=valueDisplayName, vn=value.name, sv=stype.value, pf=valuePrefix)
else:
checkExpr = 'skipCall |= validate_struct_type_array(report_data, {}, "{ln}", {dn}, "{sv}", {pf}{ln}, {pf}{vn}, {sv}, {}, {});\n'.format(name, cvReq, req, ln=lenParam.name, dn=valueDisplayName, vn=value.name, sv=stype.value, pf=valuePrefix)
else:
checkExpr = 'skipCall |= validate_struct_type(report_data, {}, {}, "{sv}", {}{vn}, {sv}, {});\n'.format(name, valueDisplayName, valuePrefix, req, vn=value.name, sv=stype.value)
elif value.name == 'pNext':
# We need to ignore VkDeviceCreateInfo and VkInstanceCreateInfo, as the loader manipulates them in a way that is not documented in vk.xml
if not structName in ['VkDeviceCreateInfo', 'VkInstanceCreateInfo']:
# Generate an array of acceptable VkStructureType values for pNext
extStructCount = 0
extStructVar = 'NULL'
extStructNames = 'NULL'
if value.extstructs:
structs = value.extstructs.split(',')
checkExpr = 'const VkStructureType allowedStructs[] = {' + ', '.join([self.structTypes[s].value for s in structs]) + '};\n' + indent
extStructCount = 'ARRAY_SIZE(allowedStructs)'
extStructVar = 'allowedStructs'
extStructNames = '"' + ', '.join(structs) + '"'
checkExpr += 'skipCall |= validate_struct_pnext(report_data, {}, {}, {}, {}{vn}, {}, {});\n'.format(name, valueDisplayName, extStructNames, valuePrefix, extStructCount, extStructVar, vn=value.name)
else:
if lenParam:
# This is an array
if lenParam.ispointer:
# If count and array parameters are optional, there
# will be no validation
if req == 'VK_TRUE' or cpReq == 'VK_TRUE' or cvReq == 'VK_TRUE':
# When the length parameter is a pointer, there is an extra Boolean parameter in the function call to indicate if it is required
checkExpr = 'skipCall |= validate_array(report_data, {}, "{ln}", {dn}, {pf}{ln}, {pf}{vn}, {}, {}, {});\n'.format(name, cpReq, cvReq, req, ln=lenParam.name, dn=valueDisplayName, vn=value.name, pf=valuePrefix)
else:
# If count and array parameters are optional, there
# will be no validation
if req == 'VK_TRUE' or cvReq == 'VK_TRUE':
funcName = 'validate_array' if value.type != 'char' else 'validate_string_array'
checkExpr = 'skipCall |= {}(report_data, {}, "{ln}", {dn}, {pf}{ln}, {pf}{vn}, {}, {});\n'.format(funcName, name, cvReq, req, ln=lenParam.name, dn=valueDisplayName, vn=value.name, pf=valuePrefix)
elif not value.isoptional:
# Function pointers need a reinterpret_cast to void*
if value.type[:4] == 'PFN_':
checkExpr = 'skipCall |= validate_required_pointer(report_data, {}, {}, reinterpret_cast<const void*>({}{vn}));\n'.format(name, valueDisplayName, valuePrefix, vn=value.name)
else:
checkExpr = 'skipCall |= validate_required_pointer(report_data, {}, {}, {}{vn});\n'.format(name, valueDisplayName, valuePrefix, vn=value.name)
#
# If this is a pointer to a struct, see if it contains members
# that need to be checked
if value.type in self.validatedStructs:
if checkExpr:
checkExpr += '\n' + indent
#
# The name prefix used when reporting an error with a struct member (eg. the 'pCreateInfor->' in 'pCreateInfo->sType')
prefix = '(std::string({}) + std::string("{}->")).c_str()'.format(variablePrefix, value.name) if variablePrefix else '"{}->"'.format(value.name)
checkExpr += 'skipCall |= parameter_validation_{}(report_data, {}, {}, {}{});\n'.format(value.type, name, prefix, valuePrefix, value.name)
elif value.type in self.validatedStructs:
# The name prefix used when reporting an error with a struct member (eg. the 'pCreateInfor->' in 'pCreateInfo->sType')
prefix = '(std::string({}) + std::string("{}.")).c_str()'.format(variablePrefix, value.name) if variablePrefix else '"{}."'.format(value.name)
checkExpr += 'skipCall |= parameter_validation_{}(report_data, {}, {}, &({}{}));\n'.format(value.type, name, prefix, valuePrefix, value.name)
#
# Append the parameter check to the function body for the current command
if checkExpr:
funcBody += '\n'
if lenParam and ('->' in lenParam.name):
# Add checks to ensure the validation call does not dereference a NULL pointer to obtain the count
funcBody += self.genCheckedLengthCall(indent, lenParam.name, checkExpr)
else:
funcBody += indent + checkExpr
elif not value.iscount:
# The parameter is not checked (counts will be checked with
# their associated array)
unused.append(value.name)
return funcBody, unused
#
# Post-process the collected struct member data to create a list of structs
# with members that need to be validated
def prepareStructMemberData(self):
for struct in self.structMembers:
for member in struct.members:
if not member.iscount:
lenParam = self.getLenParam(struct.members, member.len)
# The sType needs to be validated
# An required array/count needs to be validated
# A required pointer needs to be validated
validated = False
if member.type in self.structTypes:
validated = True
elif member.ispointer and lenParam: # This is an array
# Make sure len is not optional
if lenParam.ispointer:
if not lenParam.isoptional[0] or not lenParam.isoptional[1] or not member.isoptional:
validated = True
else:
if not lenParam.isoptional or not member.isoptional:
validated = True
elif member.ispointer and not member.isoptional:
validated = True
#
if validated:
self.validatedStructs.add(struct.name)
# Second pass to check for struct members that are structs
# requiring validation
for member in struct.members:
if member.type in self.validatedStructs:
self.validatedStructs.add(struct.name)
#
# Generate the struct member check code from the captured data
def processStructMemberData(self):
indent = self.incIndent(None)
for struct in self.structMembers:
# The string returned by genFuncBody will be nested in an if check
# for a NULL pointer, so needs its indent incremented
funcBody, unused = self.genFuncBody(self.incIndent(indent), 'pFuncName', struct.members, 'pStruct->', 'pVariableName', struct.name)
if funcBody:
cmdDef = 'static VkBool32 parameter_validation_{}(\n'.format(struct.name)
cmdDef += ' debug_report_data*'.ljust(self.genOpts.alignFuncParam) + ' report_data,\n'
cmdDef += ' const char*'.ljust(self.genOpts.alignFuncParam) + ' pFuncName,\n'
cmdDef += ' const char*'.ljust(self.genOpts.alignFuncParam) + ' pVariableName,\n'
cmdDef += ' const {}*'.format(struct.name).ljust(self.genOpts.alignFuncParam) + ' pStruct)\n'
cmdDef += '{\n'
cmdDef += indent + 'VkBool32 skipCall = VK_FALSE;\n'
cmdDef += '\n'
cmdDef += indent + 'if (pStruct != NULL) {'
cmdDef += funcBody
cmdDef += indent +'}\n'
cmdDef += '\n'
cmdDef += indent + 'return skipCall;\n'
cmdDef += '}\n'
self.appendSection('command', cmdDef)
#
# Generate the command param check code from the captured data
def processCmdData(self):
indent = self.incIndent(None)
for command in self.commands:
cmdBody, unused = self.genFuncBody(indent, '"{}"'.format(command.name), command.params, '', None, None)
if cmdBody:
cmdDef = self.getCmdDef(command) + '\n'
cmdDef += '{\n'
# Process unused parameters
# Ignore the first dispatch handle parameter, which is not
# processed by parameter_validation (except for vkCreateInstance, which
# does not have a handle as its first parameter)
startIndex = 1
if command.name == 'vkCreateInstance':
startIndex = 0
for name in unused[startIndex:]:
cmdDef += indent + 'UNUSED_PARAMETER({});\n'.format(name)
if len(unused) > 1:
cmdDef += '\n'
cmdDef += indent + 'VkBool32 skipCall = VK_FALSE;\n'
cmdDef += cmdBody
cmdDef += '\n'
cmdDef += indent + 'return skipCall;\n'
cmdDef += '}\n'
self.appendSection('command', cmdDef)