Completely changed the structure and switched to Eclipse Plugin.

[Mograsim.git] / net.mograsim.plugin.core / src / net / mograsim / plugin / asm / editor / AsmDocumentValidator.java

diff --git a/net.mograsim.plugin.core/src/net/mograsim/plugin/asm/editor/AsmDocumentValidator.java b/net.mograsim.plugin.core/src/net/mograsim/plugin/asm/editor/AsmDocumentValidator.java
new file mode 100644 (file)
index 0000000..91946bc
--- /dev/null
+++ b/net.mograsim.plugin.core/src/net/mograsim/plugin/asm/editor/AsmDocumentValidator.java
@@ -0,0 +1,77 @@
+package net.mograsim.plugin.asm.editor;
+
+import java.io.StringReader;
+
+import javax.xml.parsers.DocumentBuilder;
+import javax.xml.parsers.DocumentBuilderFactory;
+
+import org.eclipse.core.resources.IFile;
+import org.eclipse.core.resources.IMarker;
+import org.eclipse.core.runtime.CoreException;
+import org.eclipse.jface.text.DocumentEvent;
+import org.eclipse.jface.text.IDocumentListener;
+import org.xml.sax.InputSource;
+import org.xml.sax.SAXParseException;
+
+public class AsmDocumentValidator implements IDocumentListener
+{
+
+       private final IFile file;
+       private IMarker marker;
+
+       AsmDocumentValidator(IFile file)
+       {
+               this.file = file;
+       }
+
+       @Override
+       public void documentChanged(DocumentEvent event)
+       {
+               if (this.marker != null)
+               {
+                       try
+                       {
+                               this.marker.delete();
+                       }
+                       catch (CoreException e)
+                       {
+                               e.printStackTrace();
+                       }
+                       this.marker = null;
+               }
+               try (StringReader reader = new StringReader(event.getDocument().get());)
+               {
+                       DocumentBuilder documentBuilder = DocumentBuilderFactory.newInstance().newDocumentBuilder();
+                       documentBuilder.parse(new InputSource(reader));
+               }
+               catch (Exception ex)
+               {
+                       try
+                       {
+                               this.marker = file.createMarker(IMarker.PROBLEM);
+                               this.marker.setAttribute(IMarker.SEVERITY, IMarker.SEVERITY_ERROR);
+                               this.marker.setAttribute(IMarker.MESSAGE, ex.getMessage());
+                               if (ex instanceof SAXParseException)
+                               {
+                                       SAXParseException saxParseException = (SAXParseException) ex;
+                                       int lineNumber = saxParseException.getLineNumber();
+                                       int offset = event.getDocument().getLineInformation(lineNumber - 1).getOffset() + saxParseException.getColumnNumber()
+                                                       - 1;
+                                       this.marker.setAttribute(IMarker.LINE_NUMBER, lineNumber);
+                                       this.marker.setAttribute(IMarker.CHAR_START, offset);
+                                       this.marker.setAttribute(IMarker.CHAR_END, offset + 1);
+                               }
+                       }
+                       catch (Exception e)
+                       {
+                               e.printStackTrace();
+                       }
+               }
+       }
+
+       @Override
+       public void documentAboutToBeChanged(DocumentEvent event)
+       {
+       }
+
+}