sf-formula-ast v0.0.1

SF-FORMULA-AST

SF-FORMULA-AST is a parser for Salesforce Formulas based on Formulon grammar. The parser only build properly AST (abstract symantic tree).

Usage

Install

npm install sf-formula-ast

Example

const build = require('sf-formula-ast');

try {
  let ast = build('IF( DAY( DATE(2017, 12, 10) ) = 10, true, false )');  
}

Result

{ type: 'callExpression',
  id: 'if',
  arguments:
   [ { type: 'callExpression',
       id: 'equal',
       arguments:
        [ { type: 'callExpression',
            id: 'day',
            arguments:
             [ { type: 'callExpression',
                 id: 'date',
                 arguments:
                  [ { type: 'literal',
                      value: 2017,
                      dataType: 'number',
                      options: { length: 4, scale: 0 } },
                    { type: 'literal',
                      value: 12,
                      dataType: 'number',
                      options: { length: 2, scale: 0 } },
                    { type: 'literal',
                      value: 10,
                      dataType: 'number',
                      options: { length: 2, scale: 0 } } ] } ] },
          { type: 'literal',
            value: 10,
            dataType: 'number',
            options: { length: 2, scale: 0 } } ] },
     { type: 'literal',
       value: true,
       dataType: 'checkbox',
       options: {} },
     { type: 'literal',
       value: false,
       dataType: 'checkbox',
       options: {} } ] }

Data Types

Currently the following data types are supported:

• number (Integer or Float)
• text
• checkbox (TRUE or FALSE)
• null

Number options:

• Length: Number of digits to the left of the decimal point
• Scale: Number of digits to the right of the decimal point

Text options:

• Length: Number of characters

Checkbox options:

no options