New Mojom Parser: Make some getters and add a TODO.

mojom/mojom_parser/parser/parsing.go

 package parser
 
 import (
         "fmt"
         "math"
         "mojom/mojom_parser/lexer"
         "mojom/mojom_parser/mojom"
         "strconv"
 )
 
@@ skipping 277 matching lines @@
                 if !p.OK() {
                         return
                 }
                 if !p.match(lexer.Equals) {
                         return
                 }
 
                 var value mojom.ConcreteValue
                 if p.peekNextToken("Expecting to find an attribute value.").Kind == lexer.Name {
                         text := p.readName()
+                        // TODO(rudominer) Do not throw away the distinction between a name and a string literal.
                         value = mojom.MakeStringLiteralValue(text)
                 } else {
                         value = p.parseLiteral()
                 }
                 p.attachToken()
 
                 if !p.OK() {
                         return
                 }
                 attributes.List = append(attributes.List, mojom.MojomAttribute{key, value})
@@ skipping 1297 matching lines @@
         case lexer.ErrorUnknown, lexer.ErrorIllegalChar,
                 lexer.ErrorUnterminatedStringLiteral,
                 lexer.ErrorUnterminatedComment:
                 message = fmt.Sprintf("%s at %s.", token, token.LongLocationString()) + message
         default:
                 message = fmt.Sprintf(unexpected, token.LongLocationString(), token) + message
         }
         p.err = &ParseError{ParserErrorCodeUnexpectedToken, message}
         return message
 }