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diff graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/expression/Expression.atg @ 20169:65d29fa81397

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DSL: add support for hex, oct and binary integer literals.
author Chris Seaton <chris.seaton@oracle.com>
date Sun, 05 Apr 2015 19:51:46 +0100
parents 62c43fcf5be2
children
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--- a/graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/expression/Expression.atg	Sun Apr 05 09:45:58 2015 +0200
+++ b/graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/expression/Expression.atg	Sun Apr 05 19:51:46 2015 +0100
@@ -34,11 +34,14 @@
 letter = 'A' .. 'Z' + 'a' .. 'z' + '_' + '$'.
 nonZeroDigit = "123456789".
 digit = '0' + nonZeroDigit .
+hexDigit = "0123456789abcdefABCDEF".
+octDigit = "01234567".
+binaryDigit = "01".
 
 TOKENS
 
 identifier = letter {letter | digit}.
-numericLiteral = "0" | nonZeroDigit { digit }.
+numericLiteral = "0" ( "x" { hexDigit } | "b" { binaryDigit } | { octDigit } ) | nonZeroDigit { digit }.
 
 PRAGMAS