%YAML 1.2

---

name: Octo

scope: source.octo

file_extensions: [8o]

contexts:

main:

# Single line comments

- scope: comment.line.number-sign.octo

match: \#.*

# Data registers

- scope: variable.language.vreg.octo

match: (?<=^|\s)(?i:v\h)(?=$|\s)

# Address register

- scope: variable.language.ireg.octo

match: (?<=^|\s)i(?=$|\s)

# Assignment operators

- scope: keyword.operator.assignment.octo

match: (?<=^|\s)(?:\:=|\+=|\-=|=\-|\|=|&=|\^=|<<=|>>=)(?=$|\s)

# Comparison operators

- scope: keyword.operator.comparison.octo

match: (?<=^|\s)(?:==|!=)(?=$|\s)

# Relational operators

- scope: keyword.operator.relational.octo

match: (?<=^|\s)(?:<=|>=|<|>)(?=$|\s)

# Control flow keywords

- scope: keyword.control.octo

match: (?<=^|\s)(?:return|if|then|begin|else|end|loop|again|while|jump|jump0|\:call|\;)(?=$|\s)

# alias and const directives

- scope: storage.type.octo

match: (?<=^|\s)(?:\:alias|\:const)(?=$|\s)

# Self-modifying code commands

- scope: support.function.octo

match: (?<=^|\s)(?:\:unpack|\:next|\:org)(?=$|\s)

# Metaprogramming commands

- scope: support.function.octo

match: (?<=^|\s)(?:\:macro|\:calc|\:byte|\:pointer|\:stringmode)(?=$|\s)

# Breakpoint command

- scope: support.function.octo

match: (?<=^|\s)(?:\:breakpoint)(?=$|\s)

# Assertion command

- scope: support.function.octo

match: (?<=^|\s)(?:\:assert)(?=$|\s)

# Memory monitor command

- scope: support.function.octo

match: (?<=^|\s)(?:\:monitor)(?=$|\s)

# Deprecated commands

- scope: invalid.deprecated.octo

match: (?<=^|\s)(\:proto)(?=$|\s)

# Statement keywords (standard)

- scope: keyword.other.octo

match: (?<=^|\s)(?:clear|bcd|save|load|sprite|hex|random|delay|pitch|key|-key|buzzer|native)(?=$|\s)

# Statement keywords (SCHIP)

- scope: keyword.other.octo

match: (?<=^|\s)(?:hires|lores|scroll-down|scroll-left|scroll-right|bighex|exit|saveflags|loadflags)(?=$|\s)

# Statement keywords (XO-Chip)

- scope: keyword.other.octo

match: (?<=^|\s)(?:long|plane|audio|scroll-up)(?=$|\s)

# Binary numbers

- scope: constant.numeric.binary.octo

match: (?<=^|\s)[+\-]?0b[01]+(?=$|\s)

# Hexadecimal numbers

- scope: constant.numeric.hexadecimal.octo

match: (?<=^|\s)[+\-]?0x\h+(?=$|\s)

# Decimal numbers

- scope: constant.numeric.decimal.octo

match: (?<=^|\s)[+\-]?\d+(?=$|\s)

# Subroutine scopes

- scope: entity.name.function.octo

match: (?<=^|\s):\s+\S+(?=$|\s)

- match: '"'

push: string

string:

- meta_scope: string.quoted.double.octo

- match: \\[tnrv0\\"]

scope: constant.character.escape.octo

- match: '"'

pop: true