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Pascal Script: Types

TODOTODO: Review

This page lists and explains all supported types in Pascal Script used within ReNamer.

Integer types

Type Size Minimum Value Maximum Value Byte 1 byte 0 255 ShortInt 1 byte -128 127 Word 2 bytes 0 65,535 SmallInt 2 bytes -32,768 32,767 Cardinal 4 bytes 0 4,294,967,295 Integer 4 bytes -2,147,483,648 2,147,483,647 Int64 8 bytes -9,223,372,036,854,775,808 9,223,372,036,854,775,807

Floating point types

Type Size Smallest Number Largest Number Single 4 bytes 1.5 x 10-45 3.4 x 1038 Double 8 bytes 5.0 x 10-324 1.7 x 10308 Extended 10 bytes 3.6 x 10-4951 1.1 x 104932

String types

Type Description Char Stores a single 8-bit character. String Holds a sequence of 8-bit characters. Commonly used for ANSI or UTF-8 encoded text. AnsiChar Alias for Char type. AnsiString Alias for String type. WideChar Stores a single 16-bit character. WideString Holds a sequence of 16-bit characters. Commonly used for UCS-2 or UTF-16 encoded text. UnicodeChar Alias for WideChar type. UnicodeString Alias for WideString type.

The default encoding for String/AnsiString type and the conversion process to/from UnicodeString/WideString type differ between versions of ReNamer.

ReNamer version Default encoding for AnsiString type Conversion between WideString and AnsiString types 7.0 and later UTF8 Automatic, on assignment Prior to 7.0 Active system code page Manual, using conversion functions

The Unicode article highlights the differences between various encodings.

Mixed types

Type Description Boolean Logical value which can be either True and False.. Array Single and multi dimensional indexable sequence of data. Record A structure that holds a set of different data types. Variant Flexible type which can hold any data. PChar Pointer to a Char value, and can also be used to point to characters within a string.

Extra types

Several extra types have been defined to simplify the use of some functions.

Type Declared as Description TDateTime Double Represents a date and time. TStringsArray Array of WideString Indexed list of WideString values.

Deprecated in v5.74.4 Beta. Please use TWideStringArray instead. TWideStringArray Array of WideString Indexed list of WideString values.

Added in v5.74.4 Beta. Replaces ambiguous TStringsArray type. TAnsiStringArray Array of AnsiString Indexed list of AnsiString values.

Added in v5.74.4 Beta. TIntegerArray Array of Integer Indexed list of Integer values.

Added in v7.3.0.4 Beta.

Enumerations and Sets

An enumeration is simply a fixed range of named values.

For example, the fundamental Boolean data type can be considered as an enumeration consisting of two values: True and False.

A variable of an enumeration type can be assigned a single value from the enumeration.

type
  TDay = (Mon, Tue, Wed, Thu, Fri, Sat, Sun);
var
  Day: TDay;
begin
  Day := Mon;
  if Day <> Tue then
    Day := Wed;
end.

Sets allow you to defined variables which can hold multiple values out of the enumeration.

type
  TDay = (Mon, Tue, Wed, Thu, Fri, Sat, Sun);
  TDays = set of TDay;
var
  Days: TDays;
begin
  Days := [Mon, Tue, Wed];
  if Sun in Days then
    Days := Days - [Sun];
end.
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