Removed runes from parser

parser/argument.go

@@ -12,7 +12,6 @@ var validArgumentStartTokens = []lexer.TokenKind {
 	lexer.TokenKindUInt,
 	lexer.TokenKindFloat,
 	lexer.TokenKindString,
-	lexer.TokenKindRune,
 	
 	lexer.TokenKindLBracket,
 	lexer.TokenKindLParen,
@@ -78,11 +77,6 @@ func (parser *ParsingOperation) parseArgument () (argument Argument, err error)
 		argument.value = parser.token.Value().(string)
 		parser.nextToken()
 		
-	case lexer.TokenKindRune:
-		argument.kind  = ArgumentKindRune
-		argument.value = parser.token.Value().(rune)
-		parser.nextToken()
-		
 	case lexer.TokenKindLBracket:
 		argument.kind  = ArgumentKindPhrase
 		argument.value, err = parser.parseArgumentLevelPhrase()

parser/tree-tostring.go

@@ -153,13 +153,7 @@ func (argument Argument) ToString (indent int, breakLine bool) (output string) {
 	case ArgumentKindString:
 		output += doIndent (
 			indent,
-			"\"" + argument.value.(string) + "\"")
-		if breakLine { output += "\n" }
-		
-	case ArgumentKindRune:
-		output += doIndent (
-			indent,
-			"'" + string(argument.value.(rune)) + "'")
+			"'" + argument.value.(string) + "'")
 		if breakLine { output += "\n" }
 	}
 

parser/tree.go

@@ -123,11 +123,8 @@ const (
 	// 0.44
 	ArgumentKindFloat
 
-	// "hello world"
+	// 'hello world'
 	ArgumentKindString
-
-	// 'S'
-	ArgumentKindRune
 )
 
 // Argument represents a value that can be placed anywhere a value goes. This