Examples of org.eclipse.php.internal.core.ast.nodes.AST

Package org.eclipse.php.internal.core.ast.nodes

Examples of org.eclipse.php.internal.core.ast.nodes.AST

org.eclipse.php.internal.core.ast.nodes.AST
Umbrella owner and abstract syntax tree node factory. An AST instance serves as the common owner of any number of AST nodes, and as the factory for creating new AST nodes owned by that instance.
Abstract syntax trees may be hand constructed by clients, using the newTYPE factory methods to create new nodes, and the various setCHILD methods (see {@link org.eclipse.php.internal.core.ast.nodes.ASTNode} and its subclasses)to connect them together.

Each AST node belongs to a unique AST instance, called the owning AST. The children of an AST node always have the same owner as their parent node. If a node from one AST is to be added to a different AST, the subtree must be cloned first to ensures that the added nodes have the correct owning AST.

There can be any number of AST nodes owned by a single AST instance that are unparented. Each of these nodes is the root of a separate little tree of nodes. The method ASTNode.getProgramRoot() navigates from any node to the root of the tree that it is contained in. Ordinarily, an AST instance has one main tree (rooted at a Program), with newly-created nodes appearing as additional roots until they are parented somewhere under the main tree. One can navigate from any node to its AST instance, but not conversely.

The class {@link ASTParser} parses a string containing a PHP source code andreturns an abstract syntax tree for it. The resulting nodes carry source ranges relating the node back to the original source characters.

Programs created by ASTParser from a source document can be serialized after arbitrary modifications with minimal loss of original formatting. Here is an example:
```
 Document doc = new Document(""); ASTParser parser = ASTParser.newParser(AST.PHP5); parser.setSource(doc.get().toCharArray()); Program program = parser.createAST(null); program.recordModifications(); AST ast = program.getAST(); EchoStatement echo = ast.newEchoStatement(); echo.setExpression(ast.newScalar("hello world"); program.statements().add(echo); TextEdit edits = program.rewrite(document, null); UndoEdit undo = edits.apply(document); 
```
See also {@link ASTRewrite} for an alternative way to describe and serializechanges to a read-only AST.

Clients may create instances of this class using {@link #newAST(int)}, but this class is not intended to be subclassed.
@see ASTParser @see ASTNode @since 2.0

    TextEditGroup additionalInlineReplacementEdit = new TextEditGroup(Messages.format(RefactoringMessages.ExtractMethodPreviewPage_TextChangeSubsituteDuplicateStatements, fMethodName));
    anotherChange.addTextEditGroup(newMethodEdit);
    anotherChange.addTextEditGroup(inlineReplacementEdit);
    anotherChange.addTextEditGroup(additionalInlineReplacementEdit);
    
    AST ast = fProgram.getAST();
    MethodDeclaration method = ast.newMethodDeclaration();
    Block extractedMethodBody = ast.newBlock();
        
    FunctionDeclaration functionDec = ast.newFunctionDeclaration(ast.newIdentifier(fMethodName), computeArguments(ast), extractedMethodBody, false);
    method.setModifier(fModifierAccessFlag);
    method.setFunction(functionDec);
    
    ASTRewrite rewriter = ASTRewrite.create(ast);
    
    ListRewrite classListRewrite = rewriter.getListRewrite( fCoveringDeclarationFinder.getCoveringClassDeclaration().getBody(), Block.STATEMENTS_PROPERTY);
    VariableBase dispatcher = ast.newVariable(THIS_VARIABLE_NAME);
    FunctionInvocation calledExtractedMethod = ast.newFunctionInvocation(ast.newFunctionName(ast.newIdentifier(fMethodName)), computeParameters(ast));
    MethodInvocation inlineMethodCall = ast.newMethodInvocation(dispatcher, calledExtractedMethod);


    List<List<ASTNode>> Occurences = new ArrayList<List<ASTNode>>();
    
    if(fReplaceDuplicates) {
      for(Match replace : fDuplicates) {
        Occurences.add(Arrays.asList(replace.getNodes()));
      }
    } else {
      Occurences.add(fSelectedNodesFinder.getNodes());
    }
    
    boolean createdMethodBody = false;
    
    TextEditGroup inlineReplacementEditGroup = inlineReplacementEdit;
    
    for(List<ASTNode> selectedNodeOccurence : Occurences) {
    
      // this is also an indicator, whether this loop was already gone through
      if(createdMethodBody) {
        inlineReplacementEditGroup = additionalInlineReplacementEdit;
      }
      
      ASTNode parent = selectedNodeOccurence.get(0).getParent();
      
      inlineMethodCall = ASTNode.copySubtree(ast, inlineMethodCall);
      
      ListRewrite lrw;
            
      if(parent instanceof Block) {
        
        if(!createdMethodBody) {
          extractedMethodBody.statements().addAll(ASTNode.copySubtrees(ast, selectedNodeOccurence));
          addReturnStatement(ast, extractedMethodBody, fReturnStatement);
          createdMethodBody = true;
        }
        
        lrw = rewriter.getListRewrite(parent, Block.STATEMENTS_PROPERTY);
        
        ExpressionStatement inlineReplacement;
        if (fReturnStatement != null) {
          inlineReplacement = ast.newExpressionStatement(ast.newAssignment(
              ast.newVariable(fReturnStatement.getParameterName()),
              Assignment.OP_EQUAL, inlineMethodCall));
        } else {
          inlineReplacement = ast.newExpressionStatement(inlineMethodCall);
        }
        
        lrw.replace(selectedNodeOccurence.get(0),inlineReplacement, inlineReplacementEditGroup);
  
        for (int i = 1; i < selectedNodeOccurence.size(); ++i) {

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      StringReader stringReader = new StringReader(new String());
      ASTParser previewParser = ASTParser.newParser(stringReader, ProjectOptions.getPhpVersion(fSourceModule), false);
      Program previewProgram = previewParser.createAST(null);
      
      previewProgram.recordModifications();
      AST previewAST = previewProgram.getAST();
      
      FunctionDeclaration function = previewAST.newFunctionDeclaration(previewAST.newIdentifier(fMethodName), computeArguments(previewAST), previewAST.newBlock(), false);
      MethodDeclaration method = previewAST.newMethodDeclaration(fModifierAccessFlag, function);
      previewProgram.statements().add(method);
      
      Document myDoc = new Document();
      previewProgram.rewrite(myDoc, null).apply(myDoc);

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    TextEditGroup editGroup = new TextEditGroup(ASSIGN_TO_LOCAL_ID);
  
    ExpressionStatement statement = getStatement(context);
    Expression expression = statement.getExpression();
    
    AST ast = statement.getAST();
    ASTRewrite astRewrite = ASTRewrite.create(ast);
    String[] names = possibleNames(expression);
    for (int i = 0; i < names.length; i++) {
      linkedModel.getPositionGroup(KEY_NAME, true).addProposal(names[0], null, 10);
    }
    Variable variable = ast.newVariable(names[0]);
    
    Assignment assign = ast.newAssignment(variable, Assignment.OP_EQUAL, (Expression) astRewrite.createCopyTarget(expression));
    astRewrite.replace(expression, assign, editGroup);


    linkedModel.getPositionGroup(KEY_NAME, true).addPosition(astRewrite.track(variable.getName()), true);
    linkedModel.setEndPosition(astRewrite.track(statement));

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    String str = "<?php\n class A { \n\tpublic function foo(int $a){}\n }?> ";
    initialize(str);


    List<Block> blocks = getAllOfType(program, Block.class);
    Assert.assertTrue("Unexpected list size.", blocks.size() == 2);
    AST astRoot = program.getAST();
    ASTRewrite rewrite = ASTRewrite.create(astRoot);
    Block block = blocks.get(0);
    ListRewrite listRewrite = rewrite.getListRewrite(block,
        Block.STATEMENTS_PROPERTY);
    ASTNode placeHolder = rewrite.createStringPlaceholder("//mycomment",

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  /* (non-Javadoc)
   * @see org.eclipse.php.astview.views.ASTAttribute#getChildren()
   */
  public Object[] getChildren() {
    AST ast= fRoot.getAST();
    
    Binding[] res= new Binding[WELL_KNOWN_TYPES.length];
    for (int i= 0; i < WELL_KNOWN_TYPES.length; i++) {
      String type= WELL_KNOWN_TYPES[i];
      res[i]= new Binding(this, type, ast.resolveWellKnownType(type), true);
    }
    return res;
  }

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      Program program;
      try {
        program = parser.createAST(null);
        program.recordModifications();


        AST ast = program.getAST();
        IDocument document = ((PHPStructuredEditor) targetEditor)
            .getDocument();
        for (int i = 0; i < fileNames.length; ++i) {


          // resolve the relative path from include path
          String relativeLocationFromIncludePath = getFileName(
              fileNames[i], sourceModule);


          if (relativeLocationFromIncludePath != null) {
            Include include = ast.newInclude(ast.newScalar("'" //$NON-NLS-1$
                + relativeLocationFromIncludePath.toString()
                + "'"), Include.IT_REQUIRE_ONCE); //$NON-NLS-1$
            program.statements().add(i,
                ast.newExpressionStatement(include));
            TextEdit edits = program.rewrite(document, null);
            edits.apply(document);
          }


        }

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  /* (non-Javadoc)
   * @see org.eclipse.php.astview.views.ASTAttribute#getChildren()
   */
  public Object[] getChildren() {
    AST ast= fRoot.getAST();
    Object[] res= {
        new GeneralAttribute(this, "apiLevel", String.valueOf(ast.apiLevel())),
        new GeneralAttribute(this, "hasResolvedBindings", String.valueOf(ast.hasResolvedBindings())),
    };
    return res;
  }

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