Matt Wala | eae0b7a | 2015-06-16 14:06:25 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2015, The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | #include "slang_rs_special_func.h" |
| 18 | |
| 19 | #include "clang/AST/ASTContext.h" |
| 20 | #include "clang/AST/Attr.h" |
| 21 | |
| 22 | #include "slang_assert.h" |
| 23 | #include "slang_version.h" |
| 24 | |
| 25 | namespace slang { |
| 26 | |
| 27 | bool RSSpecialFunc::isGraphicsRootRSFunc(unsigned int targetAPI, |
| 28 | const clang::FunctionDecl *FD) { |
Pirama Arumuga Nainar | b6a1435 | 2016-07-26 11:39:47 -0700 | [diff] [blame] | 29 | if (FD->hasAttr<clang::RenderScriptKernelAttr>()) { |
Matt Wala | eae0b7a | 2015-06-16 14:06:25 -0700 | [diff] [blame] | 30 | return false; |
| 31 | } |
| 32 | |
| 33 | if (!FD->getName().equals("root")) { |
| 34 | return false; |
| 35 | } |
| 36 | |
| 37 | if (FD->getNumParams() == 0) { |
| 38 | // Graphics root function |
| 39 | return true; |
| 40 | } |
| 41 | |
| 42 | // Check for legacy graphics root function (with single parameter). |
| 43 | if ((targetAPI < SLANG_ICS_TARGET_API) && (FD->getNumParams() == 1)) { |
| 44 | const clang::QualType &IntType = FD->getASTContext().IntTy; |
| 45 | if (FD->getReturnType().getCanonicalType() == IntType) { |
| 46 | return true; |
| 47 | } |
| 48 | } |
| 49 | |
| 50 | return false; |
| 51 | } |
| 52 | |
| 53 | bool |
| 54 | RSSpecialFunc::validateSpecialFuncDecl(unsigned int targetAPI, |
| 55 | slang::RSContext *Context, |
| 56 | clang::FunctionDecl const *FD) { |
| 57 | slangAssert(Context && FD); |
| 58 | bool valid = true; |
| 59 | const clang::ASTContext &C = FD->getASTContext(); |
| 60 | const clang::QualType &IntType = FD->getASTContext().IntTy; |
| 61 | |
| 62 | if (isGraphicsRootRSFunc(targetAPI, FD)) { |
| 63 | if ((targetAPI < SLANG_ICS_TARGET_API) && (FD->getNumParams() == 1)) { |
| 64 | // Legacy graphics root function |
| 65 | const clang::ParmVarDecl *PVD = FD->getParamDecl(0); |
| 66 | clang::QualType QT = PVD->getType().getCanonicalType(); |
| 67 | if (QT != IntType) { |
| 68 | Context->ReportError(PVD->getLocation(), |
| 69 | "invalid parameter type for legacy " |
| 70 | "graphics root() function: %0") |
| 71 | << PVD->getType(); |
| 72 | valid = false; |
| 73 | } |
| 74 | } |
| 75 | |
| 76 | // Graphics root function, so verify that it returns an int |
| 77 | if (FD->getReturnType().getCanonicalType() != IntType) { |
| 78 | Context->ReportError(FD->getLocation(), |
| 79 | "root() is required to return " |
| 80 | "an int for graphics usage"); |
| 81 | valid = false; |
| 82 | } |
| 83 | } else if (isInitRSFunc(FD) || isDtorRSFunc(FD)) { |
| 84 | if (FD->getNumParams() != 0) { |
| 85 | Context->ReportError(FD->getLocation(), |
| 86 | "%0(void) is required to have no " |
| 87 | "parameters") |
| 88 | << FD->getName(); |
| 89 | valid = false; |
| 90 | } |
| 91 | |
| 92 | if (FD->getReturnType().getCanonicalType() != C.VoidTy) { |
| 93 | Context->ReportError(FD->getLocation(), |
| 94 | "%0(void) is required to have a void " |
| 95 | "return type") |
| 96 | << FD->getName(); |
| 97 | valid = false; |
| 98 | } |
| 99 | } else { |
| 100 | slangAssert(false && "must be called on root, init or .rs.dtor function!"); |
| 101 | } |
| 102 | |
| 103 | return valid; |
| 104 | } |
| 105 | |
| 106 | } // namespace slang |