Changeset 37 in default for trunk/de.ugoe.cs.swe.bnftools.ebnf.ui

Timestamp:

11/04/10 11:24:11 (14 years ago)

Author:

zeiss

Message:

 

Location:

trunk/de.ugoe.cs.swe.bnftools.ebnf.ui/src/de/ugoe/cs/swe/bnftools/ui/formatter

Files:

• EbnfFormatterVisitor.java (modified) (18 diffs)
• EbnfHtmlFormatterVisitor.java (modified) (2 diffs)
• MetaTextEntry.java (added)

trunk/de.ugoe.cs.swe.bnftools.ebnf.ui/src/de/ugoe/cs/swe/bnftools/ui/formatter/EbnfFormatterVisitor.java

@@ -69 +69 @@
         }
 
-        private boolean isCommentNode(LeafNode node) {
+        protected boolean isCommentNode(LeafNode node) {
                 if ((node.getText().trim().startsWith("//") || node.getText().trim().startsWith("/*")) && (node.isHidden()))
                         return true;
@@ -75 +75 @@
         }
         
-        private void collectAllComments(CompositeNode node) {
+        protected void collectAllComments(CompositeNode node) {
                 for (int i=0; i < node.getChildren().size(); i++) {
                         AbstractNode currentNode = node.getChildren().get(i);
@@ -91 +91 @@
         }
 
-        private boolean isSingleLineComment(String str) {
+        protected boolean isSingleLineComment(String str) {
                 if (str.startsWith("//"))
                         return true;
@@ -97 +97 @@
         }
         
-        private boolean isMultiLineComment(String str) {
+        protected boolean isMultiLineComment(String str) {
                 if (str.startsWith("/*"))
                         return true;
@@ -103 +103 @@
         }
 
-        private boolean isWhitespace(char ch) {
+        protected boolean isWhitespace(char ch) {
                 if ((ch==' ') || (ch == '\t') || (ch == '\n') || (ch == '\r'))
                         return true;
@@ -109 +109 @@
         }
         
-        private void skipWhitespacesOriginalText() {
+        protected void skipWhitespacesOriginalText() {
                 while (bufferPositionOriginalText < originalText.length() && isWhitespace(originalText.charAt(bufferPositionOriginalText))) {
                         bufferPositionOriginalText++;
@@ -115 +115 @@
         }
 
-        private void skipWhitespacesFormattedText(StringBuffer result) {
+        protected void skipWhitespacesFormattedText(StringBuffer result) {
                 while (bufferPositionFormattedText < formattedText.length() && isWhitespace(formattedText.charAt(bufferPositionFormattedText))) {
                         result.append(formattedText.substring(bufferPositionFormattedText, bufferPositionFormattedText+1));
@@ -122 +122 @@
         }
 
-        private boolean isSingleLineCommentNext(String str, int position) {
+        protected boolean isSingleLineCommentNext(String str, int position) {
                 if ((str.charAt(position) == '/') && (str.charAt(position) == '/'))
                         return true;
@@ -128 +128 @@
         }
         
-        private boolean isMultiLineCommentNext(String str, int position) {
+        protected boolean isMultiLineCommentNext(String str, int position) {
                 if ((str.charAt(position) == '/') && (str.charAt(position) == '*'))
                         return true;
@@ -134 +134 @@
         }
                 
-        private boolean isCommentNext(String str, int position) {
+        protected boolean isCommentNext(String str, int position) {
                 if (isSingleLineCommentNext(str, position) || isMultiLineCommentNext(str, position))
                         return true;
@@ -141 +141 @@
         }
         
-        private String scanBackWhitespaces(String str, int position) {
+        protected String scanBackWhitespaces(String str, int position) {
                 StringBuffer whiteSpaces = new StringBuffer();
                 int currentPosition = position;
@@ -151 +151 @@
         }
         
-        private String stripEndingNewline(String str) {
+        protected String stripEndingNewline(String str) {
                 int position = str.length() - 1;
                 while ((str.charAt(position) == '\n') || (str.charAt(position) == '\r')) {
@@ -159 +159 @@
         }
         
-        private int scanBackNewlinesCount(String str, int position) {
+        protected int scanBackNewlinesCount(String str, int position) {
                 int newLinesCount = 0;
                 int currentPosition = position;
@@ -179 +179 @@
         }
         
-        private void weaveComments() {
+        protected void weaveComments() {
                 bufferPositionOriginalText = 0;
                 bufferPositionFormattedTextNoWhitespaces = 0;
@@ -255 +255 @@
         }
 
-        private void newLine() {
+        protected void newLine() {
                 buf.append("\n");
                 if ((ruleSpacingStack != null) && (!ruleSpacingStack.empty())) {
@@ -264 +264 @@
         }
         
-        private void text(String str) {
+        protected void text(String str) {
                 buf.append(str);
                 newLineOffsetCounter += str.length();
         }
 
-        private void space() {
+        protected void space() {
                 buf.append(" ");
                 newLineOffsetCounter++;
         }
         
-        private void spaces(int count) {
+        protected void spaces(int count) {
                 for (int i=0; i < count; i++) {
                         buf.append(" ");
@@ -280 +280 @@
         }
 
-        private boolean lastIsClosingParentheses() {
+        protected boolean lastIsClosingParentheses() {
                 char ch = buf.toString().charAt(buf.toString().length()-1);
                 if ((ch == ')') || (ch == ']') || (ch == '}'))
@@ -287 +287 @@
         }
 
-        private void wrap() {
+        protected void wrap() {
                 if ((config.isWrapAfterThreshold()) && (newLineOffsetCounter > config.getWrapThreshold())) {
                         char last = buf.toString().charAt(buf.toString().length()-1);

trunk/de.ugoe.cs.swe.bnftools.ebnf.ui/src/de/ugoe/cs/swe/bnftools/ui/formatter/EbnfHtmlFormatterVisitor.java

@@ -1 +1 @@
 package de.ugoe.cs.swe.bnftools.ui.formatter;
 
+import java.util.ArrayList;
+import java.util.Iterator;
+
 import org.eclipse.emf.ecore.EObject;
+import org.eclipse.xtext.parsetree.LeafNode;
+
+import de.ugoe.cs.swe.bnftools.ebnf.EtsiBnf;
+import de.ugoe.cs.swe.bnftools.ebnf.SectionHeading;
 
 public class EbnfHtmlFormatterVisitor extends EbnfFormatterVisitor {
 
+        private ArrayList<MetaTextEntry> metaTexts = new ArrayList<MetaTextEntry>();
+        
         public EbnfHtmlFormatterVisitor(EObject rootNode, FormatterConfig config) {
                 super(rootNode, config);
@@ -11 +20 @@
         }
 
+        protected void weaveComments() {
+                bufferPositionOriginalText = 0;
+                bufferPositionFormattedTextNoWhitespaces = 0;
+                bufferPositionFormattedText = 0;
+                
+                StringBuffer result = new StringBuffer();
+                formattedTextNoWhitespaces = buf.toString().replaceAll("[ \t\n\r]", "");
+                formattedText = buf.toString();
 
+                MetaTextEntry currentMetaText = null;
+                if (metaTexts.iterator().hasNext())
+                        currentMetaText = metaTexts.iterator().next();
+
+                while (bufferPositionFormattedTextNoWhitespaces <= formattedTextNoWhitespaces.length()) {
+                        skipWhitespacesOriginalText();
+                        skipWhitespacesFormattedText(result);
+                        
+                        if (!(bufferPositionOriginalText < originalText.length()))
+                                break;
+                        
+                        char formattedPositionNoWhitespaces;
+                        if (bufferPositionFormattedTextNoWhitespaces == formattedTextNoWhitespaces.length()) {
+                                formattedPositionNoWhitespaces = ' ';
+                        } else {
+                                formattedPositionNoWhitespaces = formattedTextNoWhitespaces.charAt(bufferPositionFormattedTextNoWhitespaces);
+                        }
+                        char originalPosition = originalText.charAt(bufferPositionOriginalText);
+                        
+                        if (formattedPositionNoWhitespaces != originalPosition) {
+                                if (formattedPositionNoWhitespaces == ';') { // formatted text always outputs the optional semicolon, skip it if necessary
+                                        bufferPositionFormattedTextNoWhitespaces++;
+                                        bufferPositionFormattedText++;
+                                } else if (isCommentNext(originalText, bufferPositionOriginalText)) {
+                                        LeafNode currentComment = allComments.get(allCommentsPosition); 
+                                        if (currentComment.getTotalOffset() == bufferPositionOriginalText) {
+                                                if (isMultiLineComment(currentComment.getText())) {
+                                                        int newLinesCount = scanBackNewlinesCount(originalText, bufferPositionOriginalText-1);
+                                                        if (newLinesCount > 0) {
+                                                                if (scanBackNewlinesCount(result.toString(), result.toString().length()-1) == 0) {
+                                                                        result.append("\n\n");
+                                                                }
+                                                                
+                                                                result.append(currentComment.getText());
+                                                                result.append("\n");
+                                                        } else {
+                                                                String lastWhiteSpaces = scanBackWhitespaces(result.toString(), result.toString().length()-1);
+                                                                result.delete(result.toString().length() - lastWhiteSpaces.length(), result.toString().length());
+                                                                result.append(" " + stripEndingNewline(currentComment.getText()));
+                                                                result.append(lastWhiteSpaces);
+                                                        }
+                                                } else if (isSingleLineComment(currentComment.getText())) {
+                                                        int newLinesCount = scanBackNewlinesCount(originalText, bufferPositionOriginalText-1);
+                                                        String lastWhiteSpaces = scanBackWhitespaces(result.toString(), result.toString().length()-1);
+                                                        result.delete(result.toString().length() - lastWhiteSpaces.length(), result.toString().length());
+                                                        if (newLinesCount > 0) {
+                                                                result.append("\n\n" + stripEndingNewline(currentComment.getText()));
+                                                        } else {
+                                                                result.append(" " + stripEndingNewline(currentComment.getText()));
+                                                        }
+                                                        result.append(lastWhiteSpaces);
+                                                }
+                                                bufferPositionOriginalText+=currentComment.getLength();
+                                                allCommentsPosition++;
+                                        }
+                                } else { // disaster handling: return original unformatted text!
+                                        System.err.println("Disaster Recovery: returning original text!!");
+                                        buf = new StringBuffer();
+                                        buf.append(originalText);
+                                        return;
+                                }
+                        } else {
+                                if ((currentMetaText != null) && (bufferPositionFormattedText >= currentMetaText.getOffset())) {
+                                        result.append(currentMetaText.getText());
+                                        metaTexts.remove(currentMetaText);
+                                        if (metaTexts.iterator().hasNext())
+                                                currentMetaText = metaTexts.iterator().next();
+                                        else
+                                                currentMetaText = null;
+                                }
+                                
+                                result.append(formattedText.substring(bufferPositionFormattedText, bufferPositionFormattedText+1));
+                                bufferPositionOriginalText++;
+                                bufferPositionFormattedText++;
+                                bufferPositionFormattedTextNoWhitespaces++;
+                                
+                                if ((currentMetaText != null) && (bufferPositionFormattedText >= currentMetaText.getOffset())) {
+                                        result.append(currentMetaText.getText());
+                                        metaTexts.remove(currentMetaText);
+                                        if (metaTexts.iterator().hasNext())
+                                                currentMetaText = metaTexts.iterator().next();
+                                        else
+                                                currentMetaText = null;
+                                }
+                        }
+                }
+                buf = result;
+        }
+        
+        protected void metaText(String str) {
+                MetaTextEntry metaTextEntry = new MetaTextEntry(str, buf.length());
+                metaTexts.add(metaTextEntry);
+        }
+
+        // -----------------------------------------------------------------------------
+        
+        protected void visitBefore(SectionHeading node) {
+                if (!lastWasSectionHeading && !buf.substring(buf.length()-2).equals("\n\n"))
+                        newLine();
+                
+                lastWasSectionHeading=true;
+                
+                metaText("<h1>");
+                text(node.getSectionHeader().replaceAll("[\n\r]", ""));
+                metaText("</h1>");
+        }
+
+        protected void visitAfter(SectionHeading node) {
+        }
+
+        protected void visitAfter(EtsiBnf node) {
+                weaveComments();
+        }
 }