Basic-js-interpreter NPM

BASIC-JS-Interpreter

BASIC-JS-Interpretor is a Basic to Javascript Interpretor can be used in FORMULA parsing.

Written in Typescript
Runs on Netsuite's Rhino
Amd Module support
Supports MultiLine Script Parsing
Supports Function
Supports Loop statements
Advanced syntax validator

New Features!

Netusite Suitescript 2.0 Import support added
greater than less than syntax error has been fixed
Runs on Netsuite's Rhino Chrome Firefox

Tech

Basic-JS uses a number of open source projects to work properly:

Typescript - A Superset of javascript
VisualStudio Code - awesome windows-based text editor and light ide

Installation

Basic-Js requires Rhino to run.

Netsuite Copy the dist scripts to FileCabinet and in Scripts

require(["./basic"],function(interpretor){
  var basic = new interpreter.basic();
  var result = basic.run("test","2+3");
  log.debug("output",result.value.elements);
})

Browser Reference Require for loading the modules. Copy the dist scripts to root directory of the application and in html file

require(["./basic"],function(interpreter){
  var basic = new interpreter.basic();
  var result = basic.run("test","2+3");
  console.log("output",result.value.elements);
})

Language Grammer

statements  : NEWLINE* statement (NEWLINE+ statement)* NEWLINE*

statement		: KEYWORD:RETURN expr?
						: KEYWORD:CONTINUE
						: KEYWORD:BREAK
						: expr

expr        : KEYWORD:VAR IDENTIFIER EQ expr
            : comp-expr ((KEYWORD:AND|KEYWORD:OR) comp-expr)*

comp-expr   : NOT comp-expr
            : arith-expr ((EE|LT|GT|LTE|GTE) arith-expr)*

arith-expr  :	term ((PLUS|MINUS) term)*

term        : factor ((MUL|DIV) factor)*

factor      : (PLUS|MINUS) factor
            : power

power       : call (POW factor)*

call        : atom (LPAREN (expr (COMMA expr)*)? RPAREN)?

atom        : INT|FLOAT|STRING|IDENTIFIER
            : LPAREN expr RPAREN
            : list-expr
            : if-expr
            : for-expr
            : while-expr
            : func-def

list-expr   : LSQUARE (expr (COMMA expr)*)? RSQUARE

if-expr     : KEYWORD:IF expr KEYWORD:THEN
              (statement if-expr-b|if-expr-c?)
            | (NEWLINE statements KEYWORD:END|if-expr-b|if-expr-c)

if-expr-b   : KEYWORD:ELIF expr KEYWORD:THEN
              (statement if-expr-b|if-expr-c?)
            | (NEWLINE statements KEYWORD:END|if-expr-b|if-expr-c)

if-expr-c   : KEYWORD:ELSE
              statement
            | (NEWLINE statements KEYWORD:END)

for-expr    : KEYWORD:FOR IDENTIFIER EQ expr KEYWORD:TO expr 
              (KEYWORD:STEP expr)? KEYWORD:THEN
              statement
            | (NEWLINE statements KEYWORD:END)

while-expr  : KEYWORD:WHILE expr KEYWORD:THEN
              statement
            | (NEWLINE statements KEYWORD:END)

func-def    : KEYWORD:FUN IDENTIFIER?
              LPAREN (IDENTIFIER (COMMA IDENTIFIER)*)? RPAREN
              (ARROW expr)
            | (NEWLINE statements KEYWORD:END)