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# Copyright (c) 2018 The Android Open Source Project
# Copyright (c) 2018 Google Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from .common.codegen import CodeGen
from .common.vulkantypes import \
VulkanAPI, makeVulkanTypeSimple, iterateVulkanType, VulkanTypeIterator
from .wrapperdefs import VulkanWrapperGenerator
from .wrapperdefs import STRUCT_EXTENSION_PARAM, STRUCT_EXTENSION_PARAM_FOR_WRITE, EXTENSION_SIZE_API_NAME
class DeepcopyCodegen(VulkanTypeIterator):
def __init__(self, cgen, inputVars, poolVarName, rootVarName, prefix, skipValues=False):
self.cgen = cgen
self.inputVars = inputVars
self.prefix = prefix
self.poolVarName = poolVarName
self.rootVarName = rootVarName
self.skipValues = skipValues
def makeAccess(varName, asPtr = True):
return lambda t: self.cgen.generalAccess(t, parentVarName = varName, asPtr = asPtr)
def makeLengthAccess(varName):
return lambda t: self.cgen.generalLengthAccess(t, parentVarName = varName)
def makeLengthAccessGuard(varName):
return lambda t: self.cgen.generalLengthAccessGuard(t, parentVarName=varName)
self.exprAccessorLhs = makeAccess(self.inputVars[0])
self.exprAccessorRhs = makeAccess(self.inputVars[1])
self.exprAccessorValueLhs = makeAccess(self.inputVars[0], asPtr = False)
self.exprAccessorValueRhs = makeAccess(self.inputVars[1], asPtr = False)
self.lenAccessorLhs = makeLengthAccess(self.inputVars[0])
self.lenAccessorRhs = makeLengthAccess(self.inputVars[1])
self.lenAccessorGuardLhs = makeLengthAccessGuard(self.inputVars[0])
self.lenAccessorGuardRhs = makeLengthAccessGuard(self.inputVars[1])
self.checked = False
def needSkip(self, vulkanType):
return False
def makeCastExpr(self, vulkanType):
return "(%s)" % (
self.cgen.makeCTypeDecl(vulkanType, useParamName=False))
def makeNonConstCastForCopy(self, access, vulkanType):
if vulkanType.staticArrExpr:
casted = "%s(%s)" % (self.makeCastExpr(vulkanType.getForAddressAccess().getForNonConstAccess()), access)
elif vulkanType.accessibleAsPointer():
casted = "%s(%s)" % (self.makeCastExpr(vulkanType.getForNonConstAccess()), access)
else:
casted = "%s(%s)" % (self.makeCastExpr(vulkanType.getForAddressAccess().getForNonConstAccess()), access)
return casted
def makeAllocBytesExpr(self, lenAccess, vulkanType):
sizeof = self.cgen.sizeofExpr( \
vulkanType.getForValueAccess())
if lenAccess:
bytesExpr = "%s * %s" % (lenAccess, sizeof)
else:
bytesExpr = sizeof
return bytesExpr
def onCheck(self, vulkanType):
pass
def endCheck(self, vulkanType):
pass
def onCompoundType(self, vulkanType):
if self.needSkip(vulkanType):
self.cgen.line("// TODO: Unsupported : %s" %
self.cgen.makeCTypeDecl(vulkanType))
return
accessLhs = self.exprAccessorLhs(vulkanType)
accessRhs = self.exprAccessorRhs(vulkanType)
lenAccessLhs = self.lenAccessorLhs(vulkanType)
lenAccessRhs = self.lenAccessorRhs(vulkanType)
lenAccessorGuardLhs = self.lenAccessorGuardLhs(vulkanType)
lenAccessorGuardRhs = self.lenAccessorGuardRhs(vulkanType)
isPtr = vulkanType.pointerIndirectionLevels > 0
if lenAccessorGuardLhs is not None:
self.cgen.beginIf(lenAccessorGuardLhs)
if isPtr:
self.cgen.stmt("%s = nullptr" % accessRhs)
self.cgen.beginIf(accessLhs)
self.cgen.stmt( \
"%s = %s%s->alloc(%s)" % \
(accessRhs, self.makeCastExpr(vulkanType.getForNonConstAccess()),
self.poolVarName, self.makeAllocBytesExpr(lenAccessLhs, vulkanType)))
if lenAccessLhs is not None:
loopVar = "i"
accessLhs = "%s + %s" % (accessLhs, loopVar)
forInit = "uint32_t %s = 0" % loopVar
forCond = "%s < (uint32_t)%s" % (loopVar, lenAccessLhs)
forIncr = "++%s" % loopVar
if isPtr:
# Avoid generating a self-assign.
if lenAccessRhs != lenAccessLhs:
self.cgen.stmt("%s = %s" % (lenAccessRhs, lenAccessLhs))
accessRhs = "%s + %s" % (accessRhs, loopVar)
self.cgen.beginFor(forInit, forCond, forIncr)
accessRhsCasted = self.makeNonConstCastForCopy(accessRhs, vulkanType)
self.cgen.funcCall(None, self.prefix + vulkanType.typeName,
[self.poolVarName, self.rootVarName, accessLhs, accessRhsCasted])
if lenAccessLhs is not None:
self.cgen.endFor()
if isPtr:
self.cgen.endIf()
if lenAccessorGuardLhs is not None:
self.cgen.endIf()
def onString(self, vulkanType):
accessLhs = self.exprAccessorLhs(vulkanType)
accessRhs = self.exprAccessorRhs(vulkanType)
self.cgen.stmt("%s = nullptr" % accessRhs)
self.cgen.beginIf(accessLhs)
self.cgen.stmt( \
"%s = %s->strDup(%s)" % \
(accessRhs,
self.poolVarName,
accessLhs))
self.cgen.endIf()
def onStringArray(self, vulkanType):
accessLhs = self.exprAccessorLhs(vulkanType)
accessRhs = self.exprAccessorRhs(vulkanType)
lenAccessLhs = self.lenAccessorLhs(vulkanType)
self.cgen.stmt("%s = nullptr" % accessRhs)
self.cgen.beginIf("%s && %s" % (accessLhs, lenAccessLhs))
self.cgen.stmt( \
"%s = %s->strDupArray(%s, %s)" % \
(accessRhs,
self.poolVarName,
accessLhs,
lenAccessLhs))
self.cgen.endIf()
def onStaticArr(self, vulkanType):
accessLhs = self.exprAccessorValueLhs(vulkanType)
accessRhs = self.exprAccessorValueRhs(vulkanType)
lenAccessLhs = self.lenAccessorLhs(vulkanType)
bytesExpr = self.makeAllocBytesExpr(lenAccessLhs, vulkanType)
self.cgen.stmt("memcpy(%s, %s, %s)" % (accessRhs, accessLhs, bytesExpr))
def onStructExtension(self, vulkanType):
lhs = self.exprAccessorLhs(vulkanType)
rhs = self.exprAccessorRhs(vulkanType)
rhsExpr = "(%s)(%s)" % ("void*", rhs)
nextVar = "from_%s" % vulkanType.paramName
sizeVar = "%s_size" % vulkanType.paramName
self.cgen.beginIf("%s == VK_STRUCTURE_TYPE_MAX_ENUM" %
self.rootVarName)
self.cgen.stmt("%s = from->sType" % self.rootVarName)
self.cgen.endIf()
self.cgen.stmt("const void* %s = %s" % (nextVar, self.inputVars[0]))
self.cgen.stmt("size_t %s = 0u" % sizeVar)
self.cgen.beginWhile("!%s && %s" % (sizeVar, nextVar))
self.cgen.stmt("%s = static_cast<const vk_struct_common*>(%s)->%s" % (
nextVar, nextVar, vulkanType.paramName
))
self.cgen.stmt("%s = %s(%s, %s)" % (
sizeVar, EXTENSION_SIZE_API_NAME, self.rootVarName, nextVar))
self.cgen.endWhile()
self.cgen.stmt("%s = nullptr" % rhs)
self.cgen.beginIf(sizeVar)
self.cgen.stmt( \
"%s = %s%s->alloc(%s)" % \
(rhs, self.makeCastExpr(vulkanType.getForNonConstAccess()), self.poolVarName, sizeVar))
self.cgen.funcCall(None, self.prefix + "extension_struct",
[self.poolVarName, self.rootVarName, nextVar, rhsExpr])
self.cgen.endIf()
def onPointer(self, vulkanType):
accessLhs = self.exprAccessorLhs(vulkanType)
accessRhs = self.exprAccessorRhs(vulkanType)
if self.needSkip(vulkanType):
self.cgen.stmt("%s = nullptr" % accessRhs)
return
lenAccessLhs = self.lenAccessorLhs(vulkanType)
self.cgen.stmt("%s = nullptr" % accessRhs)
self.cgen.beginIf(accessLhs)
bytesExpr = self.makeAllocBytesExpr(lenAccessLhs, vulkanType)
self.cgen.stmt( \
"%s = %s%s->dupArray(%s, %s)" % \
(accessRhs,
self.makeCastExpr(vulkanType.getForNonConstAccess()),
self.poolVarName,
accessLhs,
bytesExpr))
self.cgen.endIf()
def onValue(self, vulkanType):
if self.skipValues:
return
accessLhs = self.exprAccessorValueLhs(vulkanType)
accessRhs = self.exprAccessorValueRhs(vulkanType)
self.cgen.stmt("%s = %s" % (accessRhs, accessLhs))
class VulkanDeepcopy(VulkanWrapperGenerator):
def __init__(self, module, typeInfo):
VulkanWrapperGenerator.__init__(self, module, typeInfo)
self.codegen = CodeGen()
self.deepcopyPrefix = "deepcopy_"
self.deepcopyVars = ["from", "to"]
self.deepcopyAllocatorVarName = "alloc"
self.deepcopyAllocatorParam = \
makeVulkanTypeSimple(False, "Allocator", 1,
self.deepcopyAllocatorVarName)
self.deepcopyRootVarName = "rootType"
self.deepcopyRootParam = \
makeVulkanTypeSimple(False, "VkStructureType",
0, self.deepcopyRootVarName)
self.voidType = makeVulkanTypeSimple(False, "void", 0)
self.deepcopyCodegen = \
DeepcopyCodegen(
None,
self.deepcopyVars,
self.deepcopyAllocatorVarName,
self.deepcopyRootVarName,
self.deepcopyPrefix,
skipValues=True)
self.knownDefs = {}
self.extensionDeepcopyPrototype = \
VulkanAPI(self.deepcopyPrefix + "extension_struct",
self.voidType,
[self.deepcopyAllocatorParam,
self.deepcopyRootParam,
STRUCT_EXTENSION_PARAM,
STRUCT_EXTENSION_PARAM_FOR_WRITE])
def onBegin(self,):
VulkanWrapperGenerator.onBegin(self)
self.module.appendImpl(self.codegen.makeFuncDecl(
self.extensionDeepcopyPrototype))
def onGenType(self, typeXml, name, alias):
VulkanWrapperGenerator.onGenType(self, typeXml, name, alias)
if name in self.knownDefs:
return
category = self.typeInfo.categoryOf(name)
if category in ["struct", "union"] and alias:
self.module.appendHeader(
self.codegen.makeFuncAlias(self.deepcopyPrefix + name,
self.deepcopyPrefix + alias))
if category in ["struct", "union"] and not alias:
structInfo = self.typeInfo.structs[name]
typeFromName = \
lambda varname: \
makeVulkanTypeSimple(varname == "from", name, 1, varname)
deepcopyParams = \
[self.deepcopyAllocatorParam, self.deepcopyRootParam] + \
list(map(typeFromName, self.deepcopyVars))
deepcopyPrototype = \
VulkanAPI(self.deepcopyPrefix + name,
self.voidType,
deepcopyParams)
def structDeepcopyDef(cgen):
self.deepcopyCodegen.cgen = cgen
canSimplyAssign = True
for member in structInfo.members:
if not member.isSimpleValueType(self.typeInfo):
canSimplyAssign = False
cgen.stmt("(void)%s" % self.deepcopyAllocatorVarName)
cgen.stmt("(void)%s" % self.deepcopyRootVarName)
cgen.stmt("*to = *from")
if canSimplyAssign:
pass
else:
for member in structInfo.members:
iterateVulkanType(self.typeInfo, member,
self.deepcopyCodegen)
self.module.appendHeader(
self.codegen.makeFuncDecl(deepcopyPrototype))
self.module.appendImpl(
self.codegen.makeFuncImpl(deepcopyPrototype, structDeepcopyDef))
def onGenCmd(self, cmdinfo, name, alias):
VulkanWrapperGenerator.onGenCmd(self, cmdinfo, name, alias)
def onEnd(self,):
VulkanWrapperGenerator.onEnd(self)
def deepcopyDstExpr(cgen, typeName):
return cgen.makeReinterpretCast( \
STRUCT_EXTENSION_PARAM_FOR_WRITE.paramName,
typeName, const=False)
def forEachExtensionDeepcopy(ext, castedAccess, cgen):
cgen.funcCall(None, self.deepcopyPrefix + ext.name,
[self.deepcopyAllocatorVarName,
self.deepcopyRootVarName,
castedAccess, deepcopyDstExpr(cgen, ext.name)])
self.module.appendImpl(
self.codegen.makeFuncImpl(
self.extensionDeepcopyPrototype,
lambda cgen: self.emitForEachStructExtension(
cgen,
self.voidType,
STRUCT_EXTENSION_PARAM,
forEachExtensionDeepcopy,
rootTypeVar=self.deepcopyRootParam)))
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