Added untested dereference parsing

parser/dereference.go

@@ -1,12 +1,32 @@
 package parser
 
-// import "git.tebibyte.media/arf/arf/lexer"
+import "git.tebibyte.media/arf/arf/lexer"
 // import "git.tebibyte.media/arf/arf/infoerr"
 
 func (parser *ParsingOperation) parseDereference () (
 	dereference Dereference,
 	err error,
 ) {
-	// TODO
+	err = parser.expect(lexer.TokenKindLBrace)
+	if err != nil { return }
+	dereference.location = parser.token.Location()
+	
+	// parse the value we are dereferencing
+	err = parser.nextToken(validArgumentStartTokens...)
+	if err != nil { return }
+	dereference.argument, err = parser.parseArgument()
+	if err != nil { return }
+
+	// if there is an offset, parse it
+	err = parser.expect(lexer.TokenKindUInt, lexer.TokenKindLBrace)
+	if err != nil { return }
+	if parser.token.Is(lexer.TokenKindUInt) {
+		dereference.offset = parser.token.Value().(uint64)
+	}
+	
+	err = parser.nextToken(lexer.TokenKindLBrace)
+	if err != nil { return }
+	err = parser.nextToken()
+	if err != nil { return }
 	return
 }

parser/tree.go

@@ -224,7 +224,7 @@ type Dereference struct {
 	valuable
 
 	// if a simple dereference was parsed, this should just be zero.
-	offset int
+	offset uint64
 }
 
 // PhraseKind determines what semantic role a phrase plays.