Pas2JS General

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Category: Pas2JS

Published: Sunday, 28 November 2021 05:23

Written by Administrator

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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