Ticket #42: string-termin2.patch

Source/BackEndClr/SharpGenerator.cobra

@@ -3749 +3749 @@
 
     get asSharp as String is override
         return Utils.sharpStringLiteralFor(_string)
+        
+    def writeSharpDef(sw as CurlyWriter, parens as bool) is override
+        if _string.contains(sharp'"\u2028"') # unicode line seperator
+            _expandPlatformNewline(sw)
+            return
 
-
+        s = .asSharp
+        sw.write(s)
+    
+    def _expandPlatformNewline(sw as CurlyWriter)
+        ucodeLineSep as char = sharp"'\u2028'"
+        l = List<of String>(_string.split( @[ucodeLineSep] ))
+        if l.count == 1     # false alarm no \N
+            sw.write(.asSharp)
+            return
+            
+        sep = ''
+        sw.write('CobraLangInternal.CobraImp.MakeString(')
+        for s0 in l[:-1]
+            sw.write(sep)
+            sw.write(Utils.sharpStringLiteralFor(s0))
+            sw.write(',CobraLangInternal.CobraImp._printStringMaker.MakeString(Cobra.Lang.CobraCore.NewLine)')
+            sep = ','
+        sw.write(sep)   
+        sw.write(Utils.sharpStringLiteralFor(l.last))
+        sw.write(')')
+            
 class StringSubstLit
     is partial
 

Source/CobraTokenizer.cobra

@@ -705 +705 @@
                             # cannot have `last` being a backslash anymore--it's considered consumed now
                             last = c'\0'
                             continue
+                        on c'N'         # platfrom indep line termin 
+                            #chars.append(Environment.newLine)
+                            chars.append(sharp"'\u2028'") # unicode line separator
                         else, next = c # TODO: should probably be error: Invalid escape sequence
                 else if c<>'\\'
                     next = c

Tests/100-basics/068-string-termin.cobra

@@ +1 @@
+# Test for platform independent line terminator in strings 
+class Test 
+    def main is shared 
+        assert "\N" == Environment.newLine 
+        assert '\N' == Environment.newLine 
+        s = "\\N" 
+        assert not s == Environment.newLine 
+        assert s.length == 2 
+        assert s == r'\N' 
+        assert not r'\N' == Environment.newLine 
+        
+        n=0
+        nl = Environment.newLine
+        assert '=[n]\N' == '=0[nl]'
+        assert '=[n]=[n+1]=\N' == '=0=1=[nl]'

Developer/IntermediateReleaseNotes.text

@@ -48 +48 @@
 
 * Sets with duplicate members such as `{1, 0, 1}` now generate a warning.
 
+* Add support for \N metacharacter in strings for platform-sensitive line terminator. ticket:42
+
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