1 /* 2 * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 package com.sun.tools.jextract.tree; 24 25 import java.nio.file.Path; 26 import java.util.Collections; 27 import java.util.List; 28 import java.util.ArrayList; 29 import java.util.Objects; 30 import java.util.Optional; 31 import java.util.stream.Stream; 32 import java.util.stream.Collectors; 33 import jdk.internal.clang.Cursor; 34 import jdk.internal.clang.CursorKind; 35 import jdk.internal.clang.Type; 36 37 public class TreeMaker { 38 public TreeMaker() {} 39 40 public Tree createTree(Cursor c) { 41 switch (Objects.requireNonNull(c).kind()) { 42 case EnumDecl: 43 return createEnum(c); 44 case EnumConstantDecl: 45 case FieldDecl: 46 return createField(c); 47 case FunctionDecl: 48 return createFunction(c); 49 case TypedefDecl: 50 return createTypedef(c); 51 case StructDecl: 52 case UnionDecl: 53 return createStruct(c); 54 case VarDecl: 55 return createVar(c); 56 default: 57 return new Tree(c); 58 } 59 } 60 61 private static Stream<Cursor> enumConstants(Cursor c) { 62 return c.children().filter(cx -> cx.kind() == CursorKind.EnumConstantDecl); 63 } 64 65 public EnumTree createEnum(Cursor c) { 66 checkCursor(c, CursorKind.EnumDecl); 67 List<FieldTree> consts = new ArrayList<>(); 68 enumConstants(c).forEachOrdered(cx -> consts.add((FieldTree)createTree(cx))); 69 return createEnumCommon(c, consts); 70 } 71 72 public EnumTree createEnum(Cursor c, List<FieldTree> fields) { 73 checkCursor(c, CursorKind.EnumDecl); 74 return createEnumCommon(c, fields); 75 } 76 77 private EnumTree createEnumCommon(Cursor c, List<FieldTree> fields) { 78 return new EnumTree(c, fields); 79 } 80 81 public FieldTree createField(Cursor c) { 82 checkCursorAny(c, CursorKind.EnumConstantDecl, CursorKind.FieldDecl); 83 return new FieldTree(c); 84 } 85 86 public FunctionTree createFunction(Cursor c) { 87 checkCursorAny(c, CursorKind.FunctionDecl); 88 return new FunctionTree(c); 89 } 90 91 public MacroTree createMacro(Cursor c, Optional<Object> value) { 92 checkCursorAny(c, CursorKind.MacroDefinition); 93 return new MacroTree(c, value); 94 } 95 96 public HeaderTree createHeader(Cursor c, Path path, List<Tree> decls) { 97 return new HeaderTree(c, path, decls); 98 } 99 100 public StructTree createStruct(Cursor c) { 101 checkCursorAny(c, CursorKind.StructDecl, CursorKind.UnionDecl); 102 List<Tree> decls = c.children().map(this::createTree).collect(Collectors.toList()); 103 return createStructCommon(c, decls); 104 } 105 106 public StructTree createStruct(Cursor c, List<Tree> declarations) { 107 checkCursorAny(c, CursorKind.StructDecl, CursorKind.UnionDecl); 108 return createStructCommon(c, declarations); 109 } 110 111 private StructTree createStructCommon(Cursor c, List<Tree> declarations) { 112 return new StructTree(c, declarations); 113 } 114 115 public TypedefTree createTypedef(Cursor c) { 116 checkCursor(c, CursorKind.TypedefDecl); 117 return new TypedefTree(c); 118 } 119 120 public VarTree createVar(Cursor c) { 121 checkCursor(c, CursorKind.VarDecl); 122 return new VarTree(c); 123 } 124 125 private void checkCursor(Cursor c, CursorKind k) { 126 if (c.kind() != k) { 127 throw new IllegalArgumentException("Invalid cursor kind"); 128 } 129 } 130 131 private void checkCursorAny(Cursor c, CursorKind... kinds) { 132 CursorKind expected = Objects.requireNonNull(c.kind()); 133 for (CursorKind k : kinds) { 134 if (k == expected) { 135 return; 136 } 137 } 138 throw new IllegalArgumentException("Invalid cursor kind"); 139 } 140 }