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Literal    ::= ERR | TRUE | FALSE | Text | Integer


Eval( ERR    , C) = err
Eval( TRUE   , C) = true
Eval( FALSE  , C) = false
Eval( Text   , C) = the corresponding t_text value
Eval( Integer, C) = the corresponding t_int value

In the Text evaluation rule, the C++ interpretation of escape characters is used. In the Integer evaluation rule, evaluation halts with a runtime error if the integer is too large or small to be represented by the implementation.

Allan Heydon, Roy Levin, Timothy Mann, Yuan Yu