Java Code Examples for com.google.javascript.rhino.Node#getCharno()

/**
 * Visits a NEW node.
 */
private void visitNew(NodeTraversal t, Node n) {
  Node constructor = n.getFirstChild();
  FunctionType type = getFunctionType(constructor);
  if (type != null && type.isConstructor()) {
    visitParameterList(t, n, type);
    ensureTyped(t, n, type.getInstanceType());
  } else {
    // TODO(user): add support for namespaced objects.
    if (constructor.getType() != Token.GETPROP) {
      // TODO(user): make the constructor node have lineno/charno
      // and use constructor for a more precise error indication.
      // It seems that GETPROP nodes are missing this information.
      Node line;
      if (constructor.getLineno() < 0 || constructor.getCharno() < 0) {
        line = n;
      } else {
        line = constructor;
      }
      report(t, line, NOT_A_CONSTRUCTOR);
    }
    ensureTyped(t, n);
  }
}
 

private SourcePosition<AliasTransformation> getSourceRegion(Node n) {
  Node testNode = n;
  Node next = null;
  for (; next != null || testNode.isScript();) {
    next = testNode.getNext();
    testNode = testNode.getParent();
  }

  int endLine = next == null ? Integer.MAX_VALUE : next.getLineno();
  int endChar = next == null ? Integer.MAX_VALUE : next.getCharno();
  SourcePosition<AliasTransformation> pos =
      new SourcePosition<AliasTransformation>() {};
  pos.setPositionInformation(
      n.getLineno(), n.getCharno(), endLine, endChar);
  return pos;
}
 

private SourcePosition<AliasTransformation> getSourceRegion(Node n) {
  Node testNode = n;
  Node next = null;
  for (; next != null || testNode.isScript();) {
    next = testNode.getNext();
    testNode = testNode.getParent();
  }

  int endLine = next == null ? Integer.MAX_VALUE : next.getLineno();
  int endChar = next == null ? Integer.MAX_VALUE : next.getCharno();
  SourcePosition<AliasTransformation> pos =
      new SourcePosition<AliasTransformation>() {};
  pos.setPositionInformation(
      n.getLineno(), n.getCharno(), endLine, endChar);
  return pos;
}
 

/**
 * Split a var node such as:
 *   var a, b;
 * into individual statements:
 *   var a;
 *   var b;
 * @param n The whose children we should inspect.
 */
private void splitVarDeclarations(Node n) {
  for (Node next, c = n.getFirstChild(); c != null; c = next) {
    next = c.getNext();
    if (c.getType() == Token.VAR) {
      if (assertOnChange && !c.hasChildren()) {
        throw new IllegalStateException("Empty VAR node.");
      }

      while (c.getFirstChild() != c.getLastChild()) {
        Node name = c.getFirstChild();
        c.removeChild(name);
        Node newVar = new Node(
            Token.VAR, name, n.getLineno(), n.getCharno());
        n.addChildBefore(newVar, c);
        reportCodeChange("VAR with multiple children");
      }
    }
  }
}
 

/**
 * Rewrite the function declaration from:
 *   function x() {}
 *   FUNCTION
 *     NAME
 *     LP
 *     BLOCK
 * to:
 *   var x = function() {};
 *   VAR
 *     NAME
 *       FUNCTION
 *         NAME (w/ empty string)
 *         LP
 *         BLOCK
 */
private void rewriteFunctionDeclaration(Node n) {
  // Prepare a spot for the function.
  Node oldNameNode = n.getFirstChild();
  Node fnNameNode = oldNameNode.cloneNode();
  Node var = new Node(Token.VAR, fnNameNode, n.getLineno(), n.getCharno());
  var.copyInformationFrom(n);

  // Prepare the function
  oldNameNode.setString("");

  // Move the function
  Node parent = n.getParent();
  parent.replaceChild(n, var);
  fnNameNode.addChildToFront(n);

  reportCodeChange("Function declaration");
}
 

/**
 * Visits a NEW node.
 */
private void visitNew(NodeTraversal t, Node n) {
  Node constructor = n.getFirstChild();
  FunctionType type = getFunctionType(constructor);
  if (type != null && type.isConstructor()) {
    visitParameterList(t, n, type);
    ensureTyped(t, n, type.getInstanceType());
  } else {
    // TODO(user): add support for namespaced objects.
    if (constructor.getType() != Token.GETPROP) {
      // TODO(user): make the constructor node have lineno/charno
      // and use constructor for a more precise error indication.
      // It seems that GETPROP nodes are missing this information.
      Node line;
      if (constructor.getLineno() < 0 || constructor.getCharno() < 0) {
        line = n;
      } else {
        line = constructor;
      }
      report(t, line, NOT_A_CONSTRUCTOR);
    }
    ensureTyped(t, n);
  }
}
 

/**
 * Rewrite the function declaration from:
 *   function x() {}
 *   FUNCTION
 *     NAME
 *     LP
 *     BLOCK
 * to:
 *   var x = function() {};
 *   VAR
 *     NAME
 *       FUNCTION
 *         NAME (w/ empty string)
 *         LP
 *         BLOCK
 */
private void rewriteFunctionDeclaration(Node n) {
  // Prepare a spot for the function.
  Node oldNameNode = n.getFirstChild();
  Node fnNameNode = oldNameNode.cloneNode();
  Node var = new Node(Token.VAR, fnNameNode, n.getLineno(), n.getCharno());
  var.copyInformationFrom(n);

  // Prepare the function
  oldNameNode.setString("");

  // Move the function
  Node parent = n.getParent();
  parent.replaceChild(n, var);
  fnNameNode.addChildToFront(n);

  reportCodeChange("Function declaration");
}
 

/**
 * Visits a NEW node.
 */
private void visitNew(NodeTraversal t, Node n) {
  Node constructor = n.getFirstChild();
  FunctionType type = getFunctionType(constructor);
  if (type != null && type.isConstructor()) {
    visitParameterList(t, n, type);
    ensureTyped(t, n, type.getInstanceType());
  } else {
    // TODO(user): add support for namespaced objects.
    if (constructor.getType() != Token.GETPROP) {
      // TODO(user): make the constructor node have lineno/charno
      // and use constructor for a more precise error indication.
      // It seems that GETPROP nodes are missing this information.
      Node line;
      if (constructor.getLineno() < 0 || constructor.getCharno() < 0) {
        line = n;
      } else {
        line = constructor;
      }
      report(t, line, NOT_A_CONSTRUCTOR);
    }
    ensureTyped(t, n);
  }
}
 

/**
 * Visits a NEW node.
 */
private void visitNew(NodeTraversal t, Node n) {
  Node constructor = n.getFirstChild();
  FunctionType type = getFunctionType(constructor);
  if (type != null && type.isConstructor()) {
    visitParameterList(t, n, type);
    ensureTyped(t, n, type.getInstanceType());
  } else {
    // TODO(user): add support for namespaced objects.
    if (constructor.getType() != Token.GETPROP) {
      // TODO(user): make the constructor node have lineno/charno
      // and use constructor for a more precise error indication.
      // It seems that GETPROP nodes are missing this information.
      Node line;
      if (constructor.getLineno() < 0 || constructor.getCharno() < 0) {
        line = n;
      } else {
        line = constructor;
      }
      report(t, line, NOT_A_CONSTRUCTOR);
    }
    ensureTyped(t, n);
  }
}
 

private SourcePosition<AliasTransformation> getSourceRegion(Node n) {
  Node testNode = n;
  Node next = null;
  for (; next != null || testNode.isScript();) {
    next = testNode.getNext();
    testNode = testNode.getParent();
  }

  int endLine = next == null ? Integer.MAX_VALUE : next.getLineno();
  int endChar = next == null ? Integer.MAX_VALUE : next.getCharno();
  SourcePosition<AliasTransformation> pos =
      new SourcePosition<AliasTransformation>() {};
  pos.setPositionInformation(
      n.getLineno(), n.getCharno(), endLine, endChar);
  return pos;
}
 

/**
 * Split a var node such as:
 *   var a, b;
 * into individual statements:
 *   var a;
 *   var b;
 * @param n The whose children we should inspect.
 */
private void splitVarDeclarations(Node n) {
  for (Node next, c = n.getFirstChild(); c != null; c = next) {
    next = c.getNext();
    if (c.getType() == Token.VAR) {
      if (assertOnChange && !c.hasChildren()) {
        throw new IllegalStateException("Empty VAR node.");
      }

      while (c.getFirstChild() != c.getLastChild()) {
        Node name = c.getFirstChild();
        c.removeChild(name);
        Node newVar = new Node(Token.VAR, name, n.getLineno(), n.getCharno());
        n.addChildBefore(newVar, c);
        reportCodeChange("VAR with multiple children");
      }
    }
  }
}
 

/**
 * Split a var node such as:
 *   var a, b;
 * into individual statements:
 *   var a;
 *   var b;
 * @param n The whose children we should inspect.
 */
private void splitVarDeclarations(Node n) {
  for (Node next, c = n.getFirstChild(); c != null; c = next) {
    next = c.getNext();
    if (c.getType() == Token.VAR) {
      if (assertOnChange && !c.hasChildren()) {
        throw new IllegalStateException("Empty VAR node.");
      }

      while (c.getFirstChild() != c.getLastChild()) {
        Node name = c.getFirstChild();
        c.removeChild(name);
        Node newVar = new Node(Token.VAR, name, n.getLineno(), n.getCharno());
        n.addChildBefore(newVar, c);
        reportCodeChange("VAR with multiple children");
      }
    }
  }
}
 

private SourcePosition<AliasTransformation> getSourceRegion(Node n) {
  Node testNode = n;
  Node next = null;
  for (; next != null || testNode.isScript();) {
    next = testNode.getNext();
    testNode = testNode.getParent();
  }

  int endLine = next == null ? Integer.MAX_VALUE : next.getLineno();
  int endChar = next == null ? Integer.MAX_VALUE : next.getCharno();
  SourcePosition<AliasTransformation> pos =
      new SourcePosition<AliasTransformation>() {};
  pos.setPositionInformation(
      n.getLineno(), n.getCharno(), endLine, endChar);
  return pos;
}
 

/**
 * Visits a NEW node.
 */
private void visitNew(NodeTraversal t, Node n) {
  Node constructor = n.getFirstChild();
  FunctionType type = getFunctionType(constructor);
  if (type != null && type.isConstructor()) {
    visitParameterList(t, n, type);
    ensureTyped(t, n, type.getInstanceType());
  } else {
    // TODO(user): add support for namespaced objects.
    if (constructor.getType() != Token.GETPROP) {
      // TODO(user): make the constructor node have lineno/charno
      // and use constructor for a more precise error indication.
      // It seems that GETPROP nodes are missing this information.
      Node line;
      if (constructor.getLineno() < 0 || constructor.getCharno() < 0) {
        line = n;
      } else {
        line = constructor;
      }
      report(t, line, NOT_A_CONSTRUCTOR);
    }
    ensureTyped(t, n);
  }
}
 

/**
 * Visits a NEW node.
 */
private void visitNew(NodeTraversal t, Node n) {
  Node constructor = n.getFirstChild();
  FunctionType type = getFunctionType(constructor);
  if (type != null && type.isConstructor()) {
    visitParameterList(t, n, type);
    ensureTyped(t, n, type.getInstanceType());
  } else {
    // TODO(user): add support for namespaced objects.
    if (constructor.getType() != Token.GETPROP) {
      // TODO(user): make the constructor node have lineno/charno
      // and use constructor for a more precise error indication.
      // It seems that GETPROP nodes are missing this information.
      Node line;
      if (constructor.getLineno() < 0 || constructor.getCharno() < 0) {
        line = n;
      } else {
        line = constructor;
      }
      report(t, line, NOT_A_CONSTRUCTOR);
    }
    ensureTyped(t, n);
  }
}
 

String getIdForGeneratorNode(boolean consistent, Node n) {
  Preconditions.checkState(n.isString());
  if (consistent) {
    return n.getString();
  } else {
    return n.getSourceFileName() + ':' + n.getLineno() + ":" + n.getCharno();
  }
}
 

/**
 * Creates a JSError for a source file location.  Private to avoid
 * any entanglement with code outside of the compiler.
 */
private JSError(String sourceName, @Nullable Node node,
                DiagnosticType type, String... arguments) {
  this(sourceName,
       node,
       (node != null) ? node.getLineno() : -1,
       (node != null) ? node.getCharno() : -1,
       type, null, arguments);
}
 

private String formatNodePosition(Node n) {
  if (n == null) {
    return MISSING_SOURCE + "\n";
  }

  int lineNumber = n.getLineno();
  int columnNumber = n.getCharno();
  String src = compiler.getSourceLine(sourceName, lineNumber);
  if (src == null) {
    src = MISSING_SOURCE;
  }
  return sourceName + ":" + lineNumber + ":" + columnNumber + "\n"
      + src + "\n";
}
 

@Override
public final boolean shouldTraverse(NodeTraversal nodeTraversal, Node n, Node parent) {
  if (isDone()) {
    return false;
  }
  // Ignore top level block
  if (n.isScript() || n.isModuleBody()) {
    return true;
  }

  int line = n.getLineno();
  // Comment is AFTER this line
  if (getLastLineOfCurrentComment() > line) {
    return true;
  }

  boolean outputCommentAfterLine = false;
  while (hasRemainingComments() && !isCommentAdjacentToLine(line)) {
    // Comment is AFTER this line
    if (getLastLineOfCurrentComment() > line) {
      return true;
    }

    // If the new comment is separated from the current one by at least a line,
    // output the current group of comments.
    if (getFirstLineOfNextComment() - getLastLineOfCurrentComment() > 1) {
      outputFloatingCommentFromBuffer(n);
    }
    addNextCommentToBuffer();
    outputCommentAfterLine = true;
  }

  if (getLastLineOfCurrentComment() == line) {
    // Comment on same line as code -- we have to make sure this is the node we should attach
    // it to.
    if (parent.isCall()) {
      // We're inside a function call, we have to be careful about which node to attach to,
      // since comments
      // can go before or after an argument.
      if (linkFunctionArgs(n, line)) return true;
    } else if (getCurrentComment().location.end.column < n.getCharno()) {
      // comment is before this node, so attach it
      linkCommentBufferToNode(n);
    } else {
      return true;
    }
  } else if (getLastLineOfCurrentComment() == line - 1) {
    // Comment ends just before code
    linkCommentBufferToNode(n);
  } else if (!hasRemainingComments() && !outputCommentAfterLine) {
    // Exhausted all comments, output floating comment.
    outputFloatingCommentFromBuffer(n);
  }

  if (!outputCommentAfterLine) {
    addNextCommentToBuffer();
  }
  return true;
}
 

/**
 * Creates a JSError from a file and Node position.
 *
 * @param sourceName The source file name
 * @param n Determines the line and char position within the source file name
 * @param type The DiagnosticType
 * @param arguments Arguments to be incorporated into the message
 */
public static JSError make(String sourceName, Node n, CheckLevel level,
    DiagnosticType type, String... arguments) {

  return new JSError(sourceName, n, n.getLineno(), n.getCharno(), type, level,
      arguments);
}