From Modula-2 Reloaded

WiP: Output Format For Type BOOLEAN

Types

BOOLEAN

Syntax

The EBNF for the textual representation of boolean values is

Values and Value Lists

booleanValue :
    booleanNotation;

booleanValueList :
    booleanValue ( listSeparator booleanValue )* ;

listSeparator :
    defaultListSeparator | userDefinedListSeparator | newline ;

defaultListSeparator :
    ',' whitespace ;

userDefinedListSeparator :
    character whitespace? ;

Arrays and Array Lists

booleanArray :
     openingArrayDelimiter booleanValueList closingArrayDelimiter ;

booleanArrayList :
    booleanArray ( listSeparator booleanArray )* ;

openingArrayDelimiter :
    ( defaultOpeningArrayDelimiter | userDefinedOpeningArrayDelimiter ) whitespace ;

closingArrayDelimiter :
    whitespace ( defaultClosingArrayDelimiter | userDefinedOpeningArrayDelimiter ) ;

defaultOpeningArrayDelimiter :
    '{' ;

defaultClosingArrayDelimiter :
    '}' ;

userDefinedOpeningArrayDelimiter :
    '(' | '[' ;

userDefinedClosingArrayDelimiter :
    ')' | ']' ;

Boolean Notation

booleanNotation :
    unpaddedBooleanValue | leftPaddedBooleanValue | rightPaddedBooleanValue ;

leftPaddedBooleanValue :
    whitespace+ unpaddedBooleanValue ;

rightPaddedBooleanValue :
    unpaddedBooleanValue whitespace+ ;

whitespace :
    ' ' ;

unpaddedBooleanValue :
    simpleFormat | yesNoFormat ;

simpleFormat :
    'TRUE' | 'FALSE' ;

yesNoFormat :
    'YES' | 'NO' ;

newline :
    <runtime host dependent ASCII control sequence for new line> ;

Static Semantics

• all values in a list are shown with identical formatting.