sql keywords highlighting done

Author: EliasHdzR

.idea/inspectionProfiles/Project_Default.xml

@@ -1,11 +1,12 @@
 package edu.upvictoria.javasqlide;
 
-import edu.upvictoria.javasqlide.controllers.IDEController;
 import javafx.application.Application;
 import javafx.fxml.FXMLLoader;
 import javafx.scene.Scene;
 import javafx.stage.Stage;
 
+import java.util.Objects;
+
 public class App extends Application {
     @Override
     public void start(Stage stage) {
@@ -14,6 +15,7 @@ public void start(Stage stage) {
 
             Scene scene = new Scene(fxmlLoader.load(), 1280, 800);
             stage.setTitle("Java SQL Developer");
+            scene.getStylesheets().add(Objects.requireNonNull(App.class.getResource("/edu/upvictoria/javasqlide/sql-keywords.css")).toExternalForm());
             stage.setScene(scene);
             stage.show();
         } catch (Exception e){

src/main/java/edu/upvictoria/javasqlide/App.java

@@ -15,14 +15,19 @@
 import javafx.stage.FileChooser;
 import org.fxmisc.richtext.CodeArea;
 import org.fxmisc.richtext.LineNumberFactory;
+import org.fxmisc.richtext.model.StyleSpans;
+import org.fxmisc.richtext.model.StyleSpansBuilder;
 
 import java.io.BufferedReader;
 import java.io.File;
 import java.io.FileReader;
 import java.nio.charset.Charset;
 import java.nio.charset.StandardCharsets;
 import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
 import java.util.Objects;
+import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
 public class IDEController {
@@ -42,15 +47,17 @@ public class IDEController {
     private static final String CONSTRAINTS_PATTERN = "\\b(" + String.join("|", Analyzer.getConstraints()) + ")\\b";
     private static final String FUNCTIONS_PATTERN = "\\b(" + String.join("|", Analyzer.getFunctions()) + ")\\b";
     private static final String PAREN_PATTERN = "\\(|\\)";
+    private static final String COMPARATORS_PATTERN = "\\b(" + String.join("|", Analyzer.getComparators()) + ")\\b";
     private static final String SEMICOLON_PATTERN = "\\;";
-    private static final String STRING_PATTERN = "\"([^'\\\\]|\\\\.)*'";
+    private static final String STRING_PATTERN = "'([^'\\\\]|\\\\.)*'";
 
     private static final Pattern PATTERN = Pattern.compile(
             "(?<KEYWORD>" + KEYWORD_PATTERN + ")"
+                    + "|(?<PAREN>" + PAREN_PATTERN + ")"
                     + "|(?<DATATYPE>" + DATATYPES_PATTERN + ")"
                     + "|(?<CONSTRAINT>" + CONSTRAINTS_PATTERN + ")"
                     + "|(?<FUNCTION>" + FUNCTIONS_PATTERN + ")"
-                    + "|(?<PAREN>" + PAREN_PATTERN + ")"
+                    + "|(?<COMPARATOR>" + COMPARATORS_PATTERN + ")"
                     + "|(?<SEMICOLON>" + SEMICOLON_PATTERN + ")"
                     + "|(?<STRING>" + STRING_PATTERN + ")"
     );
@@ -67,6 +74,12 @@ protected void initialize() {
             }
         });
 
+        codeArea.richChanges()
+                .filter(ch -> !ch.getInserted().equals(ch.getRemoved()))
+                .subscribe(change -> {
+                    codeArea.setStyleSpans(0, computeHighlighting(codeArea.getText()));
+                });
+        codeArea.getStyleClass().add("area");
     }
 
     @FXML
@@ -163,6 +176,32 @@ protected void executeSelectedStatement(ActionEvent event) {
         }
     }
 
+    private StyleSpans<Collection<String>> computeHighlighting(String text) {
+        text = text.toUpperCase();
+        Matcher matcher = PATTERN.matcher(text);
+        int lastKwEnd = 0;
+        StyleSpansBuilder<Collection<String>> spansBuilder = new StyleSpansBuilder<>();
+
+        while(matcher.find()) {
+            String styleClass =
+                    matcher.group("KEYWORD") != null ? "keyword" :
+                    matcher.group("DATATYPE") != null ? "datatype" :
+                    matcher.group("CONSTRAINT") != null ? "constraint" :
+                    matcher.group("FUNCTION") != null ? "function" :
+                    matcher.group("COMPARATOR") != null ? "comparator" :
+                    matcher.group("PAREN") != null ? "paren" :
+                    matcher.group("SEMICOLON") != null ? "semicolon" :
+                    matcher.group("STRING") != null ? "string" :
+                    null; /* never happens */ assert styleClass != null;
+            spansBuilder.add(Collections.emptyList(), matcher.start() - lastKwEnd);
+            spansBuilder.add(Collections.singleton(styleClass), matcher.end() - matcher.start());
+            lastKwEnd = matcher.end();
+        }
+        spansBuilder.add(Collections.emptyList(), text.length() - lastKwEnd);
+        return spansBuilder.create();
+    }
+
+
     /**
      * Aquí mando toda la basura de mensajes de excepciones para que se impriman en el tab de logs
      * @param errorMessage

src/main/java/edu/upvictoria/javasqlide/controllers/IDEController.java

@@ -5,6 +5,7 @@
     requires ExceptionFramework;
     requires java.sql;
     requires org.fxmisc.richtext;
+    requires reactfx;
 
     opens edu.upvictoria.javasqlide.controllers to javafx.fxml;
     exports edu.upvictoria.javasqlide;

src/main/java/module-info.java

@@ -0,0 +1,30 @@
+.keyword {
+    -fx-fill: purple;
+    -fx-font-weight: bold;
+}
+.semicolon {
+    -fx-font-weight: bold;
+}
+.comparator {
+    -fx-fill: firebrick;
+    -fx-font-weight: bold;
+}
+.paren {
+    -fx-fill: firebrick;
+    -fx-font-weight: bold;
+}
+.datatype {
+    -fx-fill: darkgreen;
+    -fx-font-weight: bold;
+}
+.constraint {
+    -fx-fill: teal;
+    -fx-font-weight: bold;
+}
+.string {
+    -fx-fill: blue;
+}
+
+.function {
+    -fx-fill: cadetblue;
+}