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src/jdk.jextract/share/classes/com/sun/tools/jextract/EmptyNameHandler.java

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  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 package com.sun.tools.jextract;
  24 
  25 import java.nio.file.Path;
  26 import java.nio.file.Paths;
  27 import java.util.ArrayList;
  28 import java.util.Arrays;
  29 import java.util.List;
  30 import java.util.stream.Collectors;
  31 import com.sun.tools.jextract.parser.Parser;
  32 import com.sun.tools.jextract.tree.EnumTree;
  33 import com.sun.tools.jextract.tree.FieldTree;
  34 import com.sun.tools.jextract.tree.LayoutUtils;
  35 import com.sun.tools.jextract.tree.HeaderTree;
  36 import com.sun.tools.jextract.tree.SimpleTreeVisitor;
  37 import com.sun.tools.jextract.tree.StructTree;
  38 import com.sun.tools.jextract.tree.Tree;
  39 import com.sun.tools.jextract.tree.TreeMaker;

  40 import com.sun.tools.jextract.tree.TreePrinter;
  41 import jdk.internal.clang.Cursor;
  42 
  43 /**
  44  * This tree visitor handles the tree empty names encountered in the tree
  45  * so that subsequent passes need not check tree.name() for empty string.
  46  *
  47  * 1. Names are generated & set for anonymous structs & unions.
  48  * 2. Anonymous (bit) FieldTree instances are removed.
  49  */
  50 final class EmptyNameHandler extends SimpleTreeVisitor<Tree, Void> {

  51     private final TreeMaker treeMaker = new TreeMaker();
  52 
  53     HeaderTree transform(HeaderTree ht) {

  54         return (HeaderTree)ht.accept(this, null);
  55     }
  56 
  57     // generate unique name for an empty name
  58     private String generateName(Tree tree) {
  59         return LayoutUtils.getName(tree);
  60     }
  61 
  62     @Override
  63     public Tree defaultAction(Tree tree, Void v) {
  64         return tree;
  65     }
  66 
  67     @Override
  68     public Tree visitHeader(HeaderTree ht, Void v) {
  69         List<Tree> decls =  ht.declarations().stream().
  70             map(decl -> decl.accept(this, null)).
  71             collect(Collectors.toList());
  72         return treeMaker.createHeader(ht.cursor(), ht.path(), decls);
  73     }




  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 package com.sun.tools.jextract;
  24 
  25 import java.nio.file.Path;
  26 import java.nio.file.Paths;
  27 import java.util.ArrayList;
  28 import java.util.Arrays;
  29 import java.util.List;
  30 import java.util.stream.Collectors;
  31 import com.sun.tools.jextract.parser.Parser;
  32 import com.sun.tools.jextract.tree.EnumTree;
  33 import com.sun.tools.jextract.tree.FieldTree;
  34 import com.sun.tools.jextract.tree.LayoutUtils;
  35 import com.sun.tools.jextract.tree.HeaderTree;
  36 import com.sun.tools.jextract.tree.SimpleTreeVisitor;
  37 import com.sun.tools.jextract.tree.StructTree;
  38 import com.sun.tools.jextract.tree.Tree;
  39 import com.sun.tools.jextract.tree.TreeMaker;
  40 import com.sun.tools.jextract.tree.TreePhase;
  41 import com.sun.tools.jextract.tree.TreePrinter;
  42 import jdk.internal.clang.Cursor;
  43 
  44 /**
  45  * This tree visitor handles the tree empty names encountered in the tree
  46  * so that subsequent passes need not check tree.name() for empty string.
  47  *
  48  * 1. Names are generated & set for anonymous structs & unions.
  49  * 2. Anonymous (bit) FieldTree instances are removed.
  50  */
  51 final class EmptyNameHandler extends SimpleTreeVisitor<Tree, Void>
  52         implements TreePhase {
  53     private final TreeMaker treeMaker = new TreeMaker();
  54 
  55     @Override
  56     public HeaderTree transform(HeaderTree ht) {
  57         return (HeaderTree)ht.accept(this, null);
  58     }
  59 
  60     // generate unique name for an empty name
  61     private String generateName(Tree tree) {
  62         return LayoutUtils.getName(tree);
  63     }
  64 
  65     @Override
  66     public Tree defaultAction(Tree tree, Void v) {
  67         return tree;
  68     }
  69 
  70     @Override
  71     public Tree visitHeader(HeaderTree ht, Void v) {
  72         List<Tree> decls =  ht.declarations().stream().
  73             map(decl -> decl.accept(this, null)).
  74             collect(Collectors.toList());
  75         return treeMaker.createHeader(ht.cursor(), ht.path(), decls);
  76     }


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