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Non-Blocking Language Recognition
/**
* Copyright 2015 Santhosh Kumar Tekuri
*
* The JLibs authors license this file to you under the Apache License,
* version 2.0 (the "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*/
package jlibs.nblr.editor;
import jlibs.core.lang.JavaUtil;
import jlibs.core.lang.OS;
import jlibs.nblr.Syntax;
import jlibs.nblr.editor.debug.Debugger;
import jlibs.nblr.matchers.Matcher;
import jlibs.nblr.rules.Edge;
import jlibs.nblr.rules.Node;
import jlibs.nblr.rules.Routes;
import jlibs.nblr.rules.Rule;
import org.netbeans.api.visual.action.EditProvider;
import org.netbeans.api.visual.action.TwoStateHoverProvider;
import org.netbeans.api.visual.widget.Widget;
import javax.swing.*;
import javax.swing.event.AncestorEvent;
import javax.swing.event.AncestorListener;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.InputEvent;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.io.File;
import java.util.ArrayDeque;
import java.util.Deque;
import java.util.List;
import static jlibs.nblr.matchers.Matcher.*;
/**
* @author Santhosh Kumar T
*/
public class NBLREditor extends JFrame{
private Syntax syntax;
private RuleScene scene;
private JComboBox combo;
private JLabel message = new JLabel();
Debugger debugger;
public NBLREditor(Syntax syntax){
super("Untitled");
JMenuBar menubar = new JMenuBar();
JMenu fileMenu = new JMenu("File");
int ctrl = Toolkit.getDefaultToolkit().getMenuShortcutKeyMask();
fileMenu.add(newAction).setAccelerator(KeyStroke.getKeyStroke('N', ctrl));
fileMenu.add(openAction).setAccelerator(KeyStroke.getKeyStroke('O', ctrl));
fileMenu.add(saveAction).setAccelerator(KeyStroke.getKeyStroke('S', ctrl));
fileMenu.add(saveAsAction).setAccelerator(KeyStroke.getKeyStroke('S', ctrl|InputEvent.SHIFT_DOWN_MASK));
menubar.add(fileMenu);
setJMenuBar(menubar);
combo = createRulesCombo();
if(OS.get()!=OS.MAC)
combo.setPreferredSize(new Dimension(10, 5));
combo.setFont(Util.FIXED_WIDTH_FONT);
scene = new RuleScene(new TwoStateHoverProvider() {
@Override
public void unsetHovering(Widget widget){
String msg = "";
Rule rule = scene.getRule();
if(rule!=null){
List usages = scene.getSyntax().usages(rule);
if(usages.size()==0)
msg = "this is primary rule";
else if(usages.size()==1){
if(usages.get(0)!=rule)
msg = "this rule can be inlined in "+usages.get(0).name;
}
// for(Rule r: scene.getSyntax().rules.values())
// r.computeIDS();
// System.out.println("=============================================");
// SyntaxClass syntaxClass = new SyntaxClass(scene.getSyntax());
// System.out.println(new RuleMethod(syntaxClass, rule));
}
message.setText(msg);
}
@Override
public void setHovering(Widget widget){
String msg = "";
Object model = Util.model(widget);
if(model instanceof Node){
Node node = (Node)model;
try{
msg = new Routes(scene.getRule(), node, true).toString();
}catch(IllegalStateException ex){
msg = ex.getMessage();
}
}else if(model instanceof Edge){
Edge edge = (Edge)model;
if(edge.matcher!=null)
msg = edge.matcher.toString();
}
message.setText(msg);
}
}, new EditProvider(){
@Override
public void edit(Widget widget){
Edge edge = Util.edge(widget);
if(edge.ruleTarget!=null){
history.push(new SceneState(scene));
upAction.setEnabled(true);
userRuleSelection = false;
combo.setSelectedItem(edge.ruleTarget.rule);
userRuleSelection = true;
}
}
}){
@Override
public void setRule(Syntax syntax, Rule rule){
super.setRule(syntax, rule);
if(rule!=null && rule.id0)
rule = syntax.rules.values().iterator().next();
scene.setRule(syntax, rule);
}
/*-------------------------------------------------[ Actions ]---------------------------------------------------*/
private ImageIcon icon(String name){
return new ImageIcon(getClass().getResource(name));
}
@SuppressWarnings({"FieldCanBeLocal"})
private Action newAction = new AbstractAction("New"){
public void actionPerformed(ActionEvent ae){
scene.file = null;
Syntax syntax = new Syntax();
syntax.add("ANY", any());
Rule rule = new Rule();
rule.node = new Node();
syntax.add("RULE1", rule);
showSyntax(syntax);
getRootPane().putClientProperty("Window.documentFile", null);
setTitle("Untitled");
}
};
@SuppressWarnings({"FieldCanBeLocal"})
private Action openAction = new AbstractAction("Open..."){
public void actionPerformed(ActionEvent ae){
JFileChooser chooser = new JFileChooser();
if(scene.file!=null)
chooser.setCurrentDirectory(scene.file.getParentFile());
if(chooser.showOpenDialog(NBLREditor.this)==JFileChooser.APPROVE_OPTION){
File selected = chooser.getSelectedFile();
try{
showSyntax(Syntax.loadFrom(selected));
scene.file = selected;
getRootPane().putClientProperty("Window.documentFile", scene.file);
setTitle(scene.file.getName());
}catch(Exception ex){
ex.printStackTrace();
JOptionPane.showMessageDialog(NBLREditor.this, ex.getMessage(), ex.getClass().getSimpleName(), JOptionPane.ERROR_MESSAGE);
}
}
}
};
private void saveTo(File file){
if(file==null){
JFileChooser chooser = new JFileChooser();
if(scene.file!=null)
chooser.setCurrentDirectory(scene.file.getParentFile());
if(chooser.showSaveDialog(NBLREditor.this)==JFileChooser.APPROVE_OPTION)
file = chooser.getSelectedFile();
else
return;
}
try{
syntax.saveTo(file);
scene.file = file;
}catch(Exception ex){
ex.printStackTrace();
JOptionPane.showMessageDialog(NBLREditor.this, ex.getMessage(), ex.getClass().getSimpleName(), JOptionPane.ERROR_MESSAGE);
}
}
@SuppressWarnings({"FieldCanBeLocal"})
private Action saveAction = new AbstractAction("Save"){
public void actionPerformed(ActionEvent ae){
saveTo(scene.file);
}
};
@SuppressWarnings({"FieldCanBeLocal"})
private Action saveAsAction = new AbstractAction("Save As..."){
public void actionPerformed(ActionEvent ae){
saveTo(null);
}
};
@SuppressWarnings({"FieldCanBeLocal"})
private Action newRuleAction = new AbstractAction("New Rule...", icon("newRule.png")){
public void actionPerformed(ActionEvent ae){
String ruleName = JOptionPane.showInputDialog("Rule Name");
if(ruleName!=null){
if(syntax.rules.get(ruleName)!=null){
JOptionPane.showMessageDialog(NBLREditor.this, "Rule with name '"+ruleName+"' already exists");
return;
}
if(JavaUtil.KEYWORDS.contains(ruleName)){
JOptionPane.showMessageDialog(NBLREditor.this, "Rule name cannot be java keyword");
return;
}
Rule rule = new Rule();
rule.node = new Node();
syntax.add(ruleName, rule);
combo.setModel(new DefaultComboBoxModel(syntax.rules.values().toArray()));
if(combo.getItemCount()==1)
scene.setRule(syntax, rule);
else
combo.setSelectedIndex(combo.getItemCount()-1);
}
}
};
@SuppressWarnings({"FieldCanBeLocal"})
private Action renameRuleAction = new AbstractAction("Rename Rule...", icon("renameRule.png")){
public void actionPerformed(ActionEvent ae){
Rule rule = (Rule)combo.getSelectedItem();
if(rule==null)
JOptionPane.showMessageDialog(NBLREditor.this, "No Rule to rename");
else{
String newName = JOptionPane.showInputDialog("Rule Name", rule.name);
if(newName!=null){
if(newName.equals(rule.name))
return;
if(syntax.rules.get(newName)!=null){
JOptionPane.showMessageDialog(NBLREditor.this, "Rule with name '"+newName+"' already exists");
return;
}
if(JavaUtil.KEYWORDS.contains(newName)){
JOptionPane.showMessageDialog(NBLREditor.this, "Rule name cannot be java keyword");
return;
}
rule.name = newName;
Rule rules[] = syntax.rules.values().toArray(new Rule[syntax.rules.size()]);
syntax.rules.clear();
for(Rule r: rules)
syntax.add(r.name, r);
combo.repaint();
}
}
}
};
@SuppressWarnings({"FieldCanBeLocal"})
private Action deleteRuleAction = new AbstractAction("Delete Rule...", icon("deleteRule.png")){
public void actionPerformed(ActionEvent ae){
Rule rule = (Rule)combo.getSelectedItem();
if(rule==null)
JOptionPane.showMessageDialog(NBLREditor.this, "No Rule to delete");
else{
for(Rule r: syntax.rules.values()){
if(r!=rule){
for(Edge edge: r.edges()){
if(edge.ruleTarget!=null && edge.ruleTarget.rule==rule){
JOptionPane.showMessageDialog(NBLREditor.this, "This rule is used by Rule '"+r.name+",");
return;
}
}
}
}
if(JOptionPane.showConfirmDialog(NBLREditor.this, "Are you sure, you want to delete this rule?", "Confirm", JOptionPane.YES_NO_OPTION)==JOptionPane.YES_OPTION){
syntax.delete(rule);
combo.setModel(new DefaultComboBoxModel(syntax.rules.values().toArray()));
scene.setRule(syntax, (Rule)combo.getSelectedItem());
}
}
}
};
@SuppressWarnings({"FieldCanBeLocal"})
private Action upAction = new AbstractAction("Up", icon("up.png")){
public void actionPerformed(ActionEvent ae){
SceneState sceneState = history.pop();
userRuleSelection = false;
combo.setSelectedItem(sceneState.rule);
((JViewport)scene.getView().getParent()).setViewPosition(sceneState.position);
userRuleSelection = true;
setEnabled(!history.isEmpty());
}
};
private final Deque history = new ArrayDeque();
private boolean userRuleSelection = true;
static class SceneState{
Rule rule;
Point position;
SceneState(RuleScene scene){
rule = scene.getRule();
position = ((JViewport)scene.getView().getParent()).getViewPosition();
}
}
/*-------------------------------------------------[ Test ]---------------------------------------------------*/
@SuppressWarnings({"UnusedDeclaration"})
public static void main(String[] args){
Syntax syntax = new Syntax();
Matcher Q = syntax.add("Q", ch('\''));
Matcher DIGIT = syntax.add("DIGIT", range("0-9"));
Matcher PUBID_CHAR = syntax.add("PUBID_CHAR", or(any(" \r\n"), range("A-Z"), range("a-z"), DIGIT, any("-'()+,./:=?;!*#@$_%")));
Matcher PUBID_CHAR_NQ = syntax.add("PUBID_CHAR_NQ", minus(PUBID_CHAR, Q));
Matcher SPECIAL_CHAR = syntax.add("SPECIAL_CHAR", any("^[]-^&\\<"));
Matcher NON_SPECIAL_CHAR = syntax.add("NON_SPECIAL_CHAR", not(SPECIAL_CHAR));
// Matcher GT = syntax.add("GT", ch('>'));
// Matcher BRACKET_CLOSE = syntax.add("BRACKET_CLOSE", ch(']'));
// Matcher DQ = syntax.add("DQ", ch('"'));
// Matcher HEX_DIGIT = syntax.add("HEX_DIGIT", or(DIGIT, range("a-f"), range("A-F")));
// Matcher WS = syntax.add("WS", any(" \t\n\r"));
// Matcher ENCODING_START = syntax.add("ENCODING_START", or(range("A-Z"), range("a-z")));
// Matcher ENCODING_PART = syntax.add("ENCODING_PART", or(ENCODING_START, DIGIT, any("._-")));
// Matcher CHAR = syntax.add("CHAR", or(any("\t\n\r"), range(" -\uD7FF"), range("\uE000-\uFFFD")/*, range("\u10000-\u10FFFF")*/));
// Matcher DASH = syntax.add("DASH", ch('-'));
// Matcher NDASH = syntax.add("NDASH", minus(CHAR, ch('-')));
// Matcher NAME_START = syntax.add("NAME_START", or(ch(':'), range("A-Z"), ch('_'), range("a-z"), range("\u00C0-\u00D6"), range("\u00D8-\u00F6"), range("\u00F8-\u02FF"), range("\u0370-\u037D"), range("\u037F-\u1FFF"), range("\u200C-\u200D"), range("\u2070-\u218F"), range("\u2C00-\u2FEF"), range("\u3001-\uD7FF"), range("\uF900-\uFDCF"), range("\uFDF0-\uFFFD")/*, range("\u10000-\uEFFFF")*/));
// Matcher NAME_PART = syntax.add("NAME_PART", or(NAME_START, ch('-'), ch('.'), DIGIT, ch('\u00B7'), range("\u0300-\u036F"), range("\u203F-\u2040")));
// Matcher NCNAME_START = syntax.add("NCNAME_START", minus(NAME_START, ch(':')));
// Matcher NCNAME_PART = syntax.add("NCNAME_PART", minus(NAME_PART, ch(':')));
// Rule rule = new Rule();
// rule.node = new Node();
// syntax.add("Rule1", rule);
NBLREditor editor = new NBLREditor(syntax);
editor.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
editor.setVisible(true);
}
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