Revision: 4285
http://vexi.svn.sourceforge.net/vexi/?rev=4285&view=rev
Author: mkpg2
Date: 2011-10-18 00:09:42 +0000 (Tue, 18 Oct 2011)
Log Message:
-----------
Comment. Explain associativity in parser.
Modified Paths:
--------------
trunk/org.vexi-library.js/src/main/java/org/ibex/js/parse/Parser.java
Modified: trunk/org.vexi-library.js/src/main/java/org/ibex/js/parse/Parser.java
===================================================================
--- trunk/org.vexi-library.js/src/main/java/org/ibex/js/parse/Parser.java
2011-10-16 04:25:28 UTC (rev 4284)
+++ trunk/org.vexi-library.js/src/main/java/org/ibex/js/parse/Parser.java
2011-10-18 00:09:42 UTC (rev 4285)
@@ -86,7 +86,16 @@
// Statics ////////////////////////////////////////////////////////////
static byte[] precedence = new byte[MAX_TOKEN + 1];
+
+ // REMARK associativity means the bracketing scheme when encountering the
same (or same precedence) operator consecutively.
+ // e.g. minus is left associative
+ // 1-1-1-1 == ((1-1)-1)-1
+ // assign is right associative
+ // a=b=c=d == a=(b=(c=d))
static boolean[] isRightAssociative = new boolean[MAX_TOKEN + 1];
+
+
+
// Use this as the precedence when we want anything up to the comma
private final static int NO_COMMA = 2;
static {
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