-- File: Format.mesa  last edit by Johnsson on 26-Jan-81 10:40:00
  
DIRECTORY
  LongString USING [SubStringDescriptor],
  String USING [SubString],
  Time USING [Packed];

Format: DEFINITIONS =
  BEGIN OPEN LString: LongString;

-- Format various types into strings and call procedure.

-- Types
  
  StringProc: TYPE = PROCEDURE [s: STRING];
  DateFormat: TYPE = {dateOnly, noSeconds, dateTime, full};
  NumberFormat: TYPE = RECORD [
    base: [2..36], zerofill, unsigned: BOOLEAN, columns: [0..255]];
  LongSubStringDescriptor: TYPE = LString.SubStringDescriptor;
  LongSubString: TYPE = POINTER TO LongSubStringDescriptor;

-- Constants
  
  OctalFormat: NumberFormat = [ -- 0 columns means use as many as needed.
    base: 8, zerofill: FALSE, unsigned: TRUE, columns: 0];
  DecimalFormat: NumberFormat = [
    base: 10, zerofill: FALSE, unsigned: FALSE, columns: 0];

-- Format procedures
  
  Char: PROCEDURE [c: CHARACTER, proc: StringProc];
  Date: PROCEDURE [pt: Time.Packed, format: DateFormat _ noSeconds, proc: StringProc];
  Decimal: PROCEDURE [n: INTEGER, proc: StringProc] =
    INLINE BEGIN Number[n, DecimalFormat, proc] END;
  LongDecimal: PROCEDURE [n: LONG INTEGER, proc: StringProc] =
    INLINE BEGIN LongNumber[n, DecimalFormat, proc]; END;
  LongNumber: PROCEDURE [n: LONG UNSPECIFIED,
    format: NumberFormat, proc: StringProc];
  LongOctal: PROCEDURE [n: LONG UNSPECIFIED, proc: StringProc];
    -- Adds 'B after number.
  LongString: PROCEDURE [s: LONG STRING, proc: StringProc];
  LongSubStringItem: PROCEDURE [ss: LongSubString, proc: StringProc];
    -- Repeatedly calls proc with strings filled from ss
  Number: PROCEDURE [n: UNSPECIFIED, format: NumberFormat, proc: StringProc];
  Octal: PROCEDURE[n: UNSPECIFIED, proc: StringProc];
    -- Adds 'B after number.
  SubString: PROCEDURE [ss: String.SubString, proc: StringProc];
    -- Repeatedly calls proc with strings filled from ss

END. -- Format.mesa