From 9a95b5d24b2b2f5111e1862875d4136964a59548 Mon Sep 17 00:00:00 2001
From: Adrian Kummerländer
Date: Sat, 19 Oct 2013 20:11:56 +0200
Subject: Improvement: Replaced "priority" with TokenType * Made implementation
 more expressive by replacing the integer priority with an strictly typed enum
 called TokenType ** Made removal of character comparisons from tree
 construction and lexer possible * As a side effect distinct numbers had to be
 assigned to each token ** Operators of same priority do not have identical
 numbers anymore

---
 src/utils.h | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

(limited to 'src/utils.h')

diff --git a/src/utils.h b/src/utils.h
index f71c835..6e43605 100644
--- a/src/utils.h
+++ b/src/utils.h
@@ -8,7 +8,18 @@
 
 namespace SimpleParser {
 
-int8_t getPriority(char);
+enum class TokenType : int8_t {
+	OPERATOR_PLUS     = 10,
+	OPERATOR_MINUS    = 11,
+	OPERATOR_DIVIDE   = 20,
+	OPERATOR_MULTIPLY = 21,
+	OPERATOR_POWER    = 30,
+	PARENTHESES_OPEN  = 90,
+	PARENTHESES_CLOSE = 91,
+	VALUE_NUMBER      = -1,
+};
+
+TokenType getTokenType(char);
 std::vector<std::string> lexer(std::string);
 
 }
-- 
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