Pas2JS General

Details: Category: Pas2JS; Published: Sunday, 28 November 2021 05:23; Written by Administrator; Hits: 9277

Pas2JS is a source-to-source compiler (S2S Compiler).
Convert Pascal source to JavaScript source.

It's a part of FreePascal Compiler.

With Pas2JS compiler, CT can build from Pascal source code, JavaScript applications.
These JavaScript applications are ECMAScript 5 and should run in any browser or in Node.js.

CodeTyphon Studio support Pas2JS to ALL Host OSes,
you can build Pas2JS Web Applications on:

Windows
Linux
MacOS
FreeBSD
NetBSD
OpenBSD
DragonFly
OpenIndiana
Solaris

Supported pascal syntax elements

A significant amount of Object Pascal syntax is supported, including RTTI. A more detailed list can be found in the translation file in the sources.

Delphi and ObjFPC mode
Program, Units, namespaces
unit initialization, but not finalization
Var, Const, Type
string (unicodestring), char (widechar), Boolean, Double, Byte, Shortint, Word, Smallint, longword, Longint, nativeint(int53), nativeuint(int52), currency
resourcestrings
Pointer (as a reference to a class, array, record, pointer of record, interface, but no pointer arithmetic)
Record (but no variant records), advanced records
Functions, Procedures, nested, anonymous functions
function types, of object, reference to (closures)
function arguments: default, const, var, out
If-then-else
For-do
Repeat-until
While-do
With-do
try-finally
try-except
enums
sets
arrays static, dynamic, open, multi dimensionals, array of const
String like array operations: a:=[1,2,3]+[1,1];
class type, visibility, virtual, override, abstract, overload, properties, class properties, class var, class const, constructor, destructor, class constructor
class-of
nested classes
interfaces: CORBA, COM, delegations, method resolution, reference counting, TVirtualInterface
external classes, vars, const
class helpers, record helpers, type helpers
Enumeration for..in..do
Type alias, e.g. type TTranslateString = type string;
RTTI
asm block for embedding JavaScript directly
compiler directives (e.g. $ifdef, $if, $define, $modeswitch, $R+)
compile time and run time range checking. Overflow checking
attributes
$linklib directive to link modules.
generics
Resources

Unimplemented pascal features

Array of interface
Enums with custom values
Finalization sections, class destructors
Futures
Global properties
Inline
Library
Objects
Pointer arithmetic
Record field interface
Variants