Changeset 28 in default for trunk/de.ugoe.cs.swe.bnftools.ebnf.ui/src/de/ugoe/cs/swe/bnftools/ui/formatter/EbnfFormatterVisitor.java

Timestamp:

11/02/10 16:39:02 (14 years ago)

Author:

zeiss

Message:

 

File:

• trunk/de.ugoe.cs.swe.bnftools.ebnf.ui/src/de/ugoe/cs/swe/bnftools/ui/formatter/EbnfFormatterVisitor.java (modified) (9 diffs)

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

@@ -2 +2 @@
 
 import java.util.ArrayList;
+import java.util.Stack;
 
 import org.eclipse.emf.ecore.EObject;
@@ -48 +49 @@
         private String formattedTextNoWhitespaces;
         private String originalTextNoWhitespaces;
+        private int newLineOffsetCounter = 0;
+        private int rightHandSideRuleOffset = 0;
+        private Stack<Integer> ruleSpacingStack = new Stack<Integer>();
         
         public EbnfFormatterVisitor(EObject rootNode, FormatterConfig config) {
@@ -263 +267 @@
         private void text(String str) {
                 buf.append(str);
+                newLineOffsetCounter += str.length();
         }
 
         private void space() {
                 buf.append(" ");
+                newLineOffsetCounter++;
+        }
+        
+        private void spaces(int count) {
+                for (int i=0; i < count; i++) {
+                        buf.append(" ");
+                }
         }
 
@@ -350 +362 @@
         protected void visitBefore(GroupedSequence node) {
                 text("(");
+                ruleSpacingStack.push(newLineOffsetCounter);
         }
 
         protected void visitAfter(GroupedSequence node) {
                 text(")");
+                ruleSpacingStack.pop();
         }
 
@@ -378 +392 @@
         protected void visitBefore(OptionalSequence node) {
                 text("[");
+                ruleSpacingStack.push(newLineOffsetCounter);
         }
 
         protected void visitAfter(OptionalSequence node) {
                 text("]");
+                ruleSpacingStack.pop();
         }
 
         protected void visitBefore(RepeatedSequence node) {
                 text("{");
+                ruleSpacingStack.push(newLineOffsetCounter);
         }
 
@@ -392 +409 @@
                 if (node.isMorethanonce())
                         text("+");
+                ruleSpacingStack.pop();
         }
 
@@ -400 +418 @@
                 lastWasSectionHeading=false;
 
+                newLineOffsetCounter = 0;
+
                 if (node.getRulenumber() > 0)
                         text(node.getRulenumber() + ". ");
                 
                 text(node.getName() + " ::= ");
+                
+                rightHandSideRuleOffset = newLineOffsetCounter;
+                ruleSpacingStack.push(newLineOffsetCounter);
         }
 
@@ -409 +432 @@
                 text(";");
                 newLine();
+                ruleSpacingStack.pop();
         }
 
@@ -443 +467 @@
 
         protected void visitAfter(SingleDefinition node) {
-                if (!isLastElement())
+                if (!isLastElement()) {
                         text(" | ");
-                
+                        if (config.isNewLineAfterAlternative()) {
+                                if (config.isPreventNewLineAfterAlternativeOnLessThanThreeElements()) {
+                                        DefinitionList definitionList = (DefinitionList) node.eContainer();
+                                        if (definitionList.eContents().size() > 2) {
+                                                newLine();
+                                                spaces(ruleSpacingStack.peek());
+                                        }
+                                } else {
+                                        newLine();
+                                        spaces(ruleSpacingStack.peek());
+                                }
+                        }
+                }
         }