Basic

Jfol interpret some character to symbol.

• $
• $$
• (, )
• [, ]
• .
• \

Syntax

Literal

Jfol has 4 literal type.

• String Literal
  • alike some programming language, enclosed by ""
• Number Literal
  • alike some programming language number, but Numerical range is implementation-dependent
• Boolean Literal
  • true or false
• Null Literal
  • null

Field

$(identifiers)[fieldBodies]
$identifier[fieldBodies]

• identifiers are to connect with .
  • example:
  • $(identifier1.identifier2)[fieldBodies]
• fieldBodies can omit
  • example:
  • $(identifiers)
  • $identifier

Function

$$(identifiers.functionName)(functionArguments)[functionBodies]

$$functionName(functionArguments)[functionBodies]

• identifiers are to connect with .
• functionArguments are to separate by , and can omit
  • example:
  • $$functionName(functionArgument1,functionArgument2)[functionBodies]
  • $$functionName[functionBodies]
• functionBodies can omit
  • example:
  • $$functionName(functionArguments)

Escape

If write raw character, must escape it by \.

Escapable characters:

• $
• (
• )
• [
• ]
• \
• "

Escape Sequence

If use special character, you can use escaping sequence.

• \0: Null
• \b: Backslash
• \f: Form feed
• \n: New line
• \r: Carriage return
• \t: Horizontal tab
• \v: Vertical tab