-/**\r
- * Copyright winterwell Mathematics Ltd.\r
- * @author Daniel Winterstein\r
- * 11 Jan 2007\r
- */\r
-package winterwell.markdown.editors;\r
-\r
-import org.eclipse.core.runtime.Assert;\r
-import org.eclipse.jface.text.rules.ICharacterScanner;\r
-import org.eclipse.jface.text.rules.IRule;\r
-import org.eclipse.jface.text.rules.IToken;\r
-import org.eclipse.jface.text.rules.MultiLineRule;\r
-import org.eclipse.jface.text.rules.Token;\r
-\r
-/**\r
- * \r
- *\r
- * @author Daniel Winterstein\r
- */\r
-public class EmphasisRule implements IRule {\r
- private static char[][] fDelimiters = null;\r
- private char[] fSequence;\r
- protected IToken fToken;\r
-\r
-\r
- public EmphasisRule(String marker, IToken token) {\r
- assert marker.equals("*") || marker.equals("_") || marker.equals("**")\r
- || marker.equals("***") || marker.equals("`") || marker.equals("``");\r
- Assert.isNotNull(token);\r
- fSequence = marker.toCharArray();\r
- fToken = token;\r
- }\r
- \r
- // Copied from org.eclipse.jface.text.rules.PatternRule\r
- protected boolean sequenceDetected(ICharacterScanner scanner, char[] sequence, boolean eofAllowed) {\r
- for (int i = 1; i < sequence.length; i++) {\r
- int c = scanner.read();\r
- if (c == ICharacterScanner.EOF && eofAllowed) {\r
- return true;\r
- } else if (c != sequence[i]) {\r
- // Non-matching character detected, rewind the scanner back to\r
- // the start.\r
- // Do not unread the first character.\r
- for (int j = i; j > 0; j--)\r
- scanner.unread();\r
- return false;\r
- }\r
- }\r
- return true;\r
- }\r
-\r
- /*\r
- * @see IRule#evaluate(ICharacterScanner)\r
- * \r
- * @since 2.0\r
- */\r
- public IToken evaluate(ICharacterScanner scanner) {\r
- // Should be connected only on the right side\r
- scanner.unread();\r
- boolean sawSpaceBefore = Character.isWhitespace(scanner.read());\r
- if (!sawSpaceBefore && scanner.getColumn() != 0) {\r
- return Token.UNDEFINED;\r
- }\r
-\r
- int c = scanner.read();\r
- // Should be connected only on right side\r
- if (c != fSequence[0] || !sequenceDetected(scanner, fSequence, false)) {\r
- scanner.unread();\r
- return Token.UNDEFINED;\r
- }\r
- int readCount = fSequence.length;\r
- if (fDelimiters == null) {\r
- fDelimiters = scanner.getLegalLineDelimiters();\r
- }\r
- // Start sequence detected\r
- int delimiterFound = 0;\r
- // Is it a list item marker, or just a floating *?\r
- if (sawSpaceBefore) {\r
- boolean after = Character.isWhitespace(scanner.read());\r
- scanner.unread();\r
- if (after)\r
- delimiterFound = 2;\r
- }\r
-\r
- while (delimiterFound < 2\r
- && (c = scanner.read()) != ICharacterScanner.EOF) {\r
- readCount++;\r
-\r
- if (!sawSpaceBefore && c == fSequence[0]\r
- && sequenceDetected(scanner, fSequence, false)) {\r
- return fToken;\r
- }\r
-\r
- int i;\r
- for (i = 0; i < fDelimiters.length; i++) {\r
- if (c == fDelimiters[i][0]\r
- && sequenceDetected(scanner, fDelimiters[i], true)) {\r
- delimiterFound++;\r
- break;\r
- }\r
- }\r
- if (i == fDelimiters.length)\r
- delimiterFound = 0;\r
- sawSpaceBefore = Character.isWhitespace(c);\r
- }\r
- // Reached ICharacterScanner.EOF\r
- for (; readCount > 0; readCount--)\r
- scanner.unread();\r
- return Token.UNDEFINED;\r
- }\r
- \r
-}\r
+/**
+ * Copyright winterwell Mathematics Ltd.
+ * @author Daniel Winterstein
+ * 11 Jan 2007
+ */
+package winterwell.markdown.editors;
+
+import org.eclipse.core.runtime.Assert;
+import org.eclipse.jface.text.rules.ICharacterScanner;
+import org.eclipse.jface.text.rules.IRule;
+import org.eclipse.jface.text.rules.IToken;
+import org.eclipse.jface.text.rules.MultiLineRule;
+import org.eclipse.jface.text.rules.Token;
+
+/**
+ *
+ *
+ * @author Daniel Winterstein
+ */
+public class EmphasisRule implements IRule {
+ private static char[][] fDelimiters = null;
+ private char[] fSequence;
+ protected IToken fToken;
+
+
+ public EmphasisRule(String marker, IToken token) {
+ assert marker.equals("*") || marker.equals("_") || marker.equals("**")
+ || marker.equals("***") || marker.equals("`") || marker.equals("``");
+ Assert.isNotNull(token);
+ fSequence = marker.toCharArray();
+ fToken = token;
+ }
+
+ // Copied from org.eclipse.jface.text.rules.PatternRule
+ protected boolean sequenceDetected(ICharacterScanner scanner, char[] sequence, boolean eofAllowed) {
+ for (int i = 1; i < sequence.length; i++) {
+ int c = scanner.read();
+ if (c == ICharacterScanner.EOF && eofAllowed) {
+ return true;
+ } else if (c != sequence[i]) {
+ // Non-matching character detected, rewind the scanner back to
+ // the start.
+ // Do not unread the first character.
+ for (int j = i; j > 0; j--)
+ scanner.unread();
+ return false;
+ }
+ }
+ return true;
+ }
+
+ /*
+ * @see IRule#evaluate(ICharacterScanner)
+ *
+ * @since 2.0
+ */
+ public IToken evaluate(ICharacterScanner scanner) {
+ // Should be connected only on the right side
+ scanner.unread();
+ boolean sawSpaceBefore = Character.isWhitespace(scanner.read());
+ if (!sawSpaceBefore && scanner.getColumn() != 0) {
+ return Token.UNDEFINED;
+ }
+
+ int c = scanner.read();
+ // Should be connected only on right side
+ if (c != fSequence[0] || !sequenceDetected(scanner, fSequence, false)) {
+ scanner.unread();
+ return Token.UNDEFINED;
+ }
+ int readCount = fSequence.length;
+ if (fDelimiters == null) {
+ fDelimiters = scanner.getLegalLineDelimiters();
+ }
+ // Start sequence detected
+ int delimiterFound = 0;
+ // Is it a list item marker, or just a floating *?
+ if (sawSpaceBefore) {
+ boolean after = Character.isWhitespace(scanner.read());
+ scanner.unread();
+ if (after)
+ delimiterFound = 2;
+ }
+
+ while (delimiterFound < 2
+ && (c = scanner.read()) != ICharacterScanner.EOF) {
+ readCount++;
+
+ if (!sawSpaceBefore && c == fSequence[0]
+ && sequenceDetected(scanner, fSequence, false)) {
+ return fToken;
+ }
+
+ int i;
+ for (i = 0; i < fDelimiters.length; i++) {
+ if (c == fDelimiters[i][0]
+ && sequenceDetected(scanner, fDelimiters[i], true)) {
+ delimiterFound++;
+ break;
+ }
+ }
+ if (i == fDelimiters.length)
+ delimiterFound = 0;
+ sawSpaceBefore = Character.isWhitespace(c);
+ }
+ // Reached ICharacterScanner.EOF
+ for (; readCount > 0; readCount--)
+ scanner.unread();
+ return Token.UNDEFINED;
+ }
+
+}
Code Review / simantics / platform.git / blobdiff