BlindingDark / tree-sitter-elixir

Tree Sitter grammar for Elixir

tree-sitter-elixir

Elixir grammar for tree-sitter, you can try it out in the playground.

References

• Elixirs parser
• Forked from by @wingyplus
• Tree sitter Erlang by @ostera
• IntelliJ Elixir plugin by @kronicdeth

Status

Current status (not mentioned parts are not implemented):

map

• empty
• with one key and value
• with many keys and values
• error

struct

• empty
• with one key and value
• with many keys and values
• error with string key

bitstring

• empty
• with integer
• with integer and type-specifier
• with integer and multiple type-specifier
• with integer and bit-pattern size
• with integer and bit-pattern size and type-specifier
• with integer and bit-pattern size and multiple type-specifiers
• with float
• with float and type-specifier
• with float and multiple type-specifier
• with float and bit-pattern size
• with float and bit-pattern size and type-specifier
• with float and bit-pattern size and multiple type-specifiers
• with string
• with many components

boolean

• Boolean

number

• Integer
• Negative
• Integer Multi Digits
• Integer With Underscore
• Binary Integer
• Binary Integer With Underscore
• Hex Integer
• Hex Integer With Underscore
• Octal Integer
• Octal Integer With Underscore
• Float
• Float large
• Float With Underscore
• Float With Underscore + Scientific Notation
• Float With Underscore + Scientific Notation 2
• Float negative
• Float with negative exponential/scientific notation

module_attribute

• moduledoc attribute

atom

• Atom - Unquoted
• Atom - Operator
• Atom - Quoted
• Atom - Unicode support (depends on tree-sitter/tree-sitter#95)

sigil

• empty
• string
• braced
• multiline
• regex with modifier
• only single char sigil

module_functions

• zero arity function
• zero arity function with parens
• single arity function
• plural arity function
• short hand function

string

• String - Single line
• String - Single line with escaped double quote
• String - Multi Line
• String - Concatenation
• String - Multi Line with internal double quotes

list

• List - Empty list
• List With Elements
• List - Error
• List - Trailing Separator

module

• Module with atom
• Module with Elixir uppercase atom

tuple

• Tuple
• Tuple - Error
• Tuple - Trailing Separator

Anonymous Functions

• without args
• multiple clauses
• multiple clauses with guard

variable

• snake_case
• camelCase
• ends in ?
• ends in !

keyword_list:

• Keyword empty list
• Keyword list shorthand syntax
• Keyword list tuple syntax
• Keyword list error - shorthand before tuple syntax
• Keyword list mixed - tuples + shorthand

charlist

• Charlist - Single line
• Single line with escaped quote
• Charlist - Multi line
• Charlist - Multi line with internal quote
• Char - Single
• Char - list

string_interpolation

• basic
• with operator
• with text
• in mutil line strings
• interpolating strings in strings
• interpolating strings in strings with operator

operators

• Unary operators
• Operators with left associativity
• op right associativity

for_comprehension

• For - list generator
• For - bistring generator
• For - filter tuple
• For - square list
• For - with options (into:, reduce: , unique: )

TODO

• tests, tests, tests
• use, import, require and other macro/function calls in module body?
• function capture (&Enum.map/2)
• pipe operator (does it need special treatment?)
• doctest (# iex> ... ) ?
• elaborate flow control (if+else, with)
• default arguments & function heads without body; def a(b, c \ [])
• records?
• fix difference between alias (Modulename) & others things like qualified function calls
• optional parens (ex. function calls)
• optional semicolon
• anonymous function calls ( fib.(4) )
• bugfixes, edge cases, bugfixes....