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 
  24 package com.sun.tools.jextract;
  25 
  26 import com.sun.tools.jextract.parser.Parser;
  27 import com.sun.tools.jextract.tree.Tree;
  28 
  29 import java.nio.file.Path;
  30 import java.util.Collection;
  31 import java.util.LinkedHashMap;
  32 import java.util.List;
  33 import java.util.Map;
  34 import java.util.function.Function;
  35 import java.util.stream.Collectors;
  36 
  37 public class JextractTool {
  38     private final HeaderResolver headerResolver;
  39     private final SymbolFilter symbolFilter;
  40     private final Parser parser;
  41     private final Function<HeaderFile, AsmCodeFactory> codeFactory;
  42     private final Collection<String> clangArgs;
  43     private final Collection<Path> sources;
  44 
  45     public JextractTool(Context ctx) {
  46         this.headerResolver = new HeaderResolver(ctx);
  47         this.parser = new Parser(ctx, Main.INCLUDE_MACROS);
  48         this.symbolFilter = new SymbolFilter(ctx);
  49         this.codeFactory = ctx.genStaticForwarder ?
  50                 hf -> new AsmCodeFactoryExt(ctx, hf) :
  51                 hf -> new AsmCodeFactory(ctx, hf);
  52         this.clangArgs = ctx.clangArgs;
  53         this.sources = ctx.sources;
  54     }
  55 
  56     /** This is the main jextract entry point */
  57     public Writer processHeaders() {
  58         Map<HeaderFile, List<Tree>> headerMap = parser.parse(sources, clangArgs).stream()
  59                 .map(symbolFilter)
  60                 .map(new TypedefHandler())
  61                 .map(new EmptyNameHandler())
  62                 .map(new DuplicateDeclarationHandler())
  63                 .flatMap(h -> h.declarations().stream())
  64                 .distinct()
  65                 .collect(Collectors.groupingBy(this::headerFromDecl));
  66 
  67         //generate classes
  68         Map<String, byte[]> results = new LinkedHashMap<>();
  69         headerMap.forEach((hf, decls) -> generateHeader(hf, decls, results));
  70         return new Writer(results);
  71     }
  72 
  73     private void generateHeader(HeaderFile hf, List<Tree> decls, Map<String, byte[]> results) {
  74         TypeEnter enter = new TypeEnter(hf.dictionary());
  75         decls.forEach(t -> t.accept(enter, null));
  76         AsmCodeFactory cf = codeFactory.apply(hf);
  77         results.putAll(cf.generateNativeHeader(decls));
  78     }
  79 
  80     private HeaderFile headerFromDecl(Tree tree) {
  81         Path path = tree.cursor().getSourceLocation().getFileLocation().path();
  82         return headerResolver.headerFor(path);
  83     }
  84 }