Literal values

PMP supports standard Pascal constant formats as well as additional ones that programmers like (sorry but octal, duodecimal and sexagesimal are not supported):

$<hex>        hexadecimal constant (8..32-bit) (TP/Delphi format)

0x<hex>        hexadecimal constant (8..32-bit) (C format)

h'<hex>'        hexadecimal constant (8..32-bit) (MPASM™ format) (note 2)

0b<binary>        binary constant (8..32-bit) (C format)

b'<binary>'        binary constant (8..32-bit) (MPASM™ format) (note 2)

%<binary>        binary constant (8..32-bit) (Some other Pascal format)

'<character>'        single character constant (ASCII), evaluated as CHAR.

#n        single character constant (ASCII), evaluated as CHAR.

#$<hex>        single character constant (ASCII), evaluated as CHAR.

'<string>'        string constant (note 1)

Note 1:        Control character literals (TP / Delphi ^n form, or C \n form) are not allowed; for concatenation use the + operator construction..

Note 2:        There is a special syntax behaviour for b'<binary>' and h'<hex>': spaces, dots, dashes and underscores are accepted inside the quoted string for improving readability; they are ignored.

NEW! (V2.0): If the $EXTENDED syntax is ON, literal numbers may also contain underscore characters for improving readability; they are ignored and cannot be at heading or trailing positions:

CONST
 MyConst = 1000_000;  // Only in extended syntax
 MyHexConst = $FBCD_AA55;  // Only in extended syntax
 MyBinConst = b'0000.0101';  // $05
 MySpecialChar = #$0d; // CR
 MySpecialStr = 'Hello'#13#10'World!'; // 'Hello' + CR + LF + 'World!'