PBasic Language Pack

A language pack for CodeMirror built using Lezer designed to provide insight into PBasic v2.5 code.

Implemented Language Features

AST Parsing

• General language syntax
  • Arithmetic expressions
  • Expression grouping
  • Significant line endings
  • Line ending stand-ins via :
  • Pattern matching
  • Compile-time if/else, select NOTE: all compile-time information is currently shoved under the 'Preprocessor' token
• VAR / CON declarations
  • general syntax
  • BIT / NIB / BYTE / WORD
  • <TYPE>(N) arrays
• .LOWBYTE / .HIGHBYTE
• AUXIO
• BRANCH
• BUTTON
• COMPARE
• CONFIGPIN
• COUNT
• DATA
  • named DATA
  • WORD-typed DATA
  • @address-ed DATA
  • reserved DATA
  • repeated DATA
  • expressions in DATA
• DEBUG / SER / I2C / LCD, IN and OUT forms
  • simple DEBUG
  • all format specifiers
  • all special cases
• DO ... LOOP
  • DO WHILE ...
  • DO UNTIL ...
  • DO ... LOOP WHILE
  • DO ... LOOP UNTIL
  • DO ... LOOP
• DTMFOUT
• END
• EXIT
• FOR ... NEXT
• FREQOUT
• GET
• GOSUB
• GOTO
• HIGH
• IF ... THEN ... ELSE
  • IF ... THEN
  • ELSEIF
  • ELSE
• INPUT
• IOTERM
• LCDCMD
• LOOKDOWN
• LOOKUP
• LOW
• MAINIO
• NAP
• ON ... GOSUB/GOTO
• OUTPUT
• OWIN
• OWOUT
• PAUSE
• POLL___
• PULSIN
• PULSOUT
• PUT
• PWM
• RANDOM
• RCTIME
• READ
• RETURN
• REVERSE
• RUN
• SELECT ... CASE
  • Simple cases
  • Multiple cases
  • Comparison cases
  • Range cases
  • Else case
• SHIFTIN
• SHIFTOUT
• SLEEP
• STOP
• STORE
• TOGGLE
• WRITE
• XOUT

Todo: test it all :D

FAQ:

• Use syntaxTree() to get the syntax tree from a editor state. THere is no obvious documentation which states this >:(
• Many of the necessary types for interfacing with the library are private, so sometimes using type PrivType = Parameters<fnWithPrivType>[0]; will be necessary