| /* |
| * Copyright 2015, The Android Open Source Project |
| * |
| * 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. |
| */ |
| |
| #include "slang_rs_special_func.h" |
| |
| #include "clang/AST/ASTContext.h" |
| #include "clang/AST/Attr.h" |
| |
| #include "slang_assert.h" |
| #include "slang_version.h" |
| |
| namespace slang { |
| |
| bool RSSpecialFunc::isGraphicsRootRSFunc(unsigned int targetAPI, |
| const clang::FunctionDecl *FD) { |
| if (FD->hasAttr<clang::RenderScriptKernelAttr>()) { |
| return false; |
| } |
| |
| if (!FD->getName().equals("root")) { |
| return false; |
| } |
| |
| if (FD->getNumParams() == 0) { |
| // Graphics root function |
| return true; |
| } |
| |
| // Check for legacy graphics root function (with single parameter). |
| if ((targetAPI < SLANG_ICS_TARGET_API) && (FD->getNumParams() == 1)) { |
| const clang::QualType &IntType = FD->getASTContext().IntTy; |
| if (FD->getReturnType().getCanonicalType() == IntType) { |
| return true; |
| } |
| } |
| |
| return false; |
| } |
| |
| bool |
| RSSpecialFunc::validateSpecialFuncDecl(unsigned int targetAPI, |
| slang::RSContext *Context, |
| clang::FunctionDecl const *FD) { |
| slangAssert(Context && FD); |
| bool valid = true; |
| const clang::ASTContext &C = FD->getASTContext(); |
| const clang::QualType &IntType = FD->getASTContext().IntTy; |
| |
| if (isGraphicsRootRSFunc(targetAPI, FD)) { |
| if ((targetAPI < SLANG_ICS_TARGET_API) && (FD->getNumParams() == 1)) { |
| // Legacy graphics root function |
| const clang::ParmVarDecl *PVD = FD->getParamDecl(0); |
| clang::QualType QT = PVD->getType().getCanonicalType(); |
| if (QT != IntType) { |
| Context->ReportError(PVD->getLocation(), |
| "invalid parameter type for legacy " |
| "graphics root() function: %0") |
| << PVD->getType(); |
| valid = false; |
| } |
| } |
| |
| // Graphics root function, so verify that it returns an int |
| if (FD->getReturnType().getCanonicalType() != IntType) { |
| Context->ReportError(FD->getLocation(), |
| "root() is required to return " |
| "an int for graphics usage"); |
| valid = false; |
| } |
| } else if (isInitRSFunc(FD) || isDtorRSFunc(FD)) { |
| if (FD->getNumParams() != 0) { |
| Context->ReportError(FD->getLocation(), |
| "%0(void) is required to have no " |
| "parameters") |
| << FD->getName(); |
| valid = false; |
| } |
| |
| if (FD->getReturnType().getCanonicalType() != C.VoidTy) { |
| Context->ReportError(FD->getLocation(), |
| "%0(void) is required to have a void " |
| "return type") |
| << FD->getName(); |
| valid = false; |
| } |
| } else { |
| slangAssert(false && "must be called on root, init or .rs.dtor function!"); |
| } |
| |
| return valid; |
| } |
| |
| } // namespace slang |