Initial Arduino IDE based on Processing.

app/syntax/SyntaxUtilities.java

@@ -0,0 +1,163 @@
+/*
+ * SyntaxUtilities.java - Utility functions used by syntax colorizing
+ * Copyright (C) 1999 Slava Pestov
+ *
+ * You may use and modify this package for any purpose. Redistribution is
+ * permitted, in both source and binary form, provided that this notice
+ * remains intact in all source distributions of this package.
+ */
+
+package processing.app.syntax;
+
+import javax.swing.text.*;
+import java.awt.*;
+
+
+/**
+ * Class with several utility functions used by jEdit's syntax colorizing
+ * subsystem.
+ *
+ * @author Slava Pestov
+ * @version $Id: SyntaxUtilities.java,v 1.1 2005/04/09 02:30:37 benfry Exp $
+ */
+public class SyntaxUtilities
+{
+  /**
+   * Checks if a subregion of a <code>Segment</code> is equal to a
+   * string.
+   * @param ignoreCase True if case should be ignored, false otherwise
+   * @param text The segment
+   * @param offset The offset into the segment
+   * @param match The string to match
+   */
+  public static boolean regionMatches(boolean ignoreCase, Segment text,
+                                      int offset, String match)
+  {
+    int length = offset + match.length();
+    char[] textArray = text.array;
+    if(length > text.offset + text.count)
+      return false;
+    for(int i = offset, j = 0; i < length; i++, j++)
+      {
+        char c1 = textArray[i];
+        char c2 = match.charAt(j);
+        if(ignoreCase)
+          {
+            c1 = Character.toUpperCase(c1);
+            c2 = Character.toUpperCase(c2);
+          }
+        if(c1 != c2)
+          return false;
+      }
+    return true;
+  }
+
+
+  /**
+   * Checks if a subregion of a <code>Segment</code> is equal to a
+   * character array.
+   * @param ignoreCase True if case should be ignored, false otherwise
+   * @param text The segment
+   * @param offset The offset into the segment
+   * @param match The character array to match
+   */
+  public static boolean regionMatches(boolean ignoreCase, Segment text,
+                                      int offset, char[] match)
+  {
+    int length = offset + match.length;
+    char[] textArray = text.array;
+    if(length > text.offset + text.count)
+      return false;
+    for(int i = offset, j = 0; i < length; i++, j++)
+      {
+        char c1 = textArray[i];
+        char c2 = match[j];
+        if(ignoreCase)
+          {
+            c1 = Character.toUpperCase(c1);
+            c2 = Character.toUpperCase(c2);
+          }
+        if(c1 != c2)
+          return false;
+      }
+    return true;
+  }
+
+
+  /**
+   * Returns the default style table. This can be passed to the
+   * <code>setStyles()</code> method of <code>SyntaxDocument</code>
+   * to use the default syntax styles.
+   */
+  public static SyntaxStyle[] getDefaultSyntaxStyles()
+  {
+    SyntaxStyle[] styles = new SyntaxStyle[Token.ID_COUNT];
+
+    styles[Token.COMMENT1] = new SyntaxStyle(Color.black,true,false);
+    styles[Token.COMMENT2] = new SyntaxStyle(new Color(0x990033),true,false);
+    styles[Token.KEYWORD1] = new SyntaxStyle(Color.black,false,true);
+    styles[Token.KEYWORD2] = new SyntaxStyle(Color.magenta,false,false);
+    styles[Token.KEYWORD3] = new SyntaxStyle(new Color(0x009600),false,false);
+    styles[Token.LITERAL1] = new SyntaxStyle(new Color(0x650099),false,false);
+    styles[Token.LITERAL2] = new SyntaxStyle(new Color(0x650099),false,true);
+    styles[Token.LABEL] = new SyntaxStyle(new Color(0x990033),false,true);
+    styles[Token.OPERATOR] = new SyntaxStyle(Color.black,false,true);
+    styles[Token.INVALID] = new SyntaxStyle(Color.red,false,true);
+
+    return styles;
+  }
+
+
+  /**
+   * Paints the specified line onto the graphics context. Note that this
+   * method munges the offset and count values of the segment.
+   * @param line The line segment
+   * @param tokens The token list for the line
+   * @param styles The syntax style list
+   * @param expander The tab expander used to determine tab stops. May
+   * be null
+   * @param gfx The graphics context
+   * @param x The x co-ordinate
+   * @param y The y co-ordinate
+   * @return The x co-ordinate, plus the width of the painted string
+   */
+  public static int paintSyntaxLine(Segment line, Token tokens,
+                                    SyntaxStyle[] styles,
+                                    TabExpander expander, Graphics gfx,
+                                    int x, int y)
+  {
+    Font defaultFont = gfx.getFont();
+    Color defaultColor = gfx.getColor();
+
+    int offset = 0;
+    for(;;)
+      {
+        byte id = tokens.id;
+        if(id == Token.END)
+          break;
+
+        int length = tokens.length;
+        if(id == Token.NULL)
+          {
+            if(!defaultColor.equals(gfx.getColor()))
+              gfx.setColor(defaultColor);
+            if(!defaultFont.equals(gfx.getFont()))
+              gfx.setFont(defaultFont);
+          }
+        else
+          styles[id].setGraphicsFlags(gfx,defaultFont);
+
+        line.count = length;
+        x = Utilities.drawTabbedText(line,x,y,gfx,expander,0);
+        line.offset += length;
+        offset += length;
+
+        tokens = tokens.next;
+      }
+
+    return x;
+  }
+
+  // private members
+  private SyntaxUtilities() {}
+}