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comparison 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
comparison
equal deleted inserted replaced
20168:f0f725496f2a 20169:65d29fa81397
32 CHARACTERS 32 CHARACTERS
33 33
34 letter = 'A' .. 'Z' + 'a' .. 'z' + '_' + '$'. 34 letter = 'A' .. 'Z' + 'a' .. 'z' + '_' + '$'.
35 nonZeroDigit = "123456789". 35 nonZeroDigit = "123456789".
36 digit = '0' + nonZeroDigit . 36 digit = '0' + nonZeroDigit .
37 hexDigit = "0123456789abcdefABCDEF".
38 octDigit = "01234567".
39 binaryDigit = "01".
37 40
38 TOKENS 41 TOKENS
39 42
40 identifier = letter {letter | digit}. 43 identifier = letter {letter | digit}.
41 numericLiteral = "0" | nonZeroDigit { digit }. 44 numericLiteral = "0" ( "x" { hexDigit } | "b" { binaryDigit } | { octDigit } ) | nonZeroDigit { digit }.
42 45
43 PRAGMAS 46 PRAGMAS
44 47
45 PRODUCTIONS 48 PRODUCTIONS
46 49