99 lines
3.6 KiB
JavaScript
99 lines
3.6 KiB
JavaScript
#// Usage: jjs -scripting -fx astviewer.js -- <scriptfile>
|
|
|
|
/*
|
|
* Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* - Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
*
|
|
* - Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* - Neither the name of Oracle nor the names of its
|
|
* contributors may be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
|
|
* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
|
|
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
|
|
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
|
|
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
|
|
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
|
|
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
|
|
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
|
|
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
|
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
if (!$OPTIONS._fx) {
|
|
print("Usage: jjs -scripting -fx astviewer.js -- <.js file>");
|
|
exit(1);
|
|
}
|
|
|
|
// Using JavaFX from Nashorn. See also:
|
|
// http://docs.oracle.com/javase/8/docs/technotes/guides/scripting/nashorn/javafx.html
|
|
|
|
// This example shows AST of a script file as a JavaFX
|
|
// tree view in a window. If no file is specified, AST of
|
|
// this script file is shown. This script demonstrates
|
|
// 'load' function, JavaFX support by -fx, readFully function
|
|
// in scripting mode.
|
|
|
|
// JavaFX classes used
|
|
var StackPane = Java.type("javafx.scene.layout.StackPane");
|
|
var Scene = Java.type("javafx.scene.Scene");
|
|
var TreeItem = Java.type("javafx.scene.control.TreeItem");
|
|
var TreeView = Java.type("javafx.scene.control.TreeView");
|
|
|
|
// Create a javafx TreeItem to view a AST node
|
|
function treeItemForASTNode(ast, name) {
|
|
var item = new TreeItem(name);
|
|
for (var prop in ast) {
|
|
var node = ast[prop];
|
|
if (typeof node == 'object') {
|
|
if (node == null) {
|
|
// skip nulls
|
|
continue;
|
|
}
|
|
|
|
if (Array.isArray(node) && node.length == 0) {
|
|
// skip empty arrays
|
|
continue;
|
|
}
|
|
|
|
var subitem = treeItemForASTNode(node, prop);
|
|
} else {
|
|
var subitem = new TreeItem(prop + ": " + node);
|
|
}
|
|
item.children.add(subitem);
|
|
}
|
|
return item;
|
|
}
|
|
|
|
// do we have a script file passed? if not, use current script
|
|
var sourceName = arguments.length == 0? __FILE__ : arguments[0];
|
|
|
|
// load parser.js from nashorn resources
|
|
load("nashorn:parser.js");
|
|
|
|
// read the full content of the file and parse it
|
|
// to get AST of the script specified
|
|
var ast = parse(readFully(sourceName));
|
|
|
|
// JavaFX start method
|
|
function start(stage) {
|
|
stage.title = "AST Viewer";
|
|
var rootItem = treeItemForASTNode(ast, sourceName);
|
|
var tree = new TreeView(rootItem);
|
|
var root = new StackPane();
|
|
root.children.add(tree);
|
|
stage.scene = new Scene(root, 300, 450);
|
|
stage.show();
|
|
}
|