b/finn-lang
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Added function calls and bindings to grammar

Browse Source
This commit is contained in:
Brandon Dyck 2023-06-29 11:33:32 -06:00
parent df0c370059
commit f1b373c7e6
1 changed files with 11 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
grammar.txt
View File

@ -1,12 +1,12 @@
expression -> expression ->
| sequence | sequence
// | apply | apply
| unary | unary
| binary | binary
| let | let
| compound | compound
| control | control
| field | selector
| index | index
| identifier | identifier
| primary | primary
@ -19,22 +19,25 @@ operator ->
| "+" | "-" | "*" | "/" | "+" | "-" | "*" | "/"
| "|>" | "<|" | ">>" | "<<" | "|>" | "<|" | ">>" | "<<"
| "++" ; | "++" ;
pattern -> "_" | record_pattern | variant_pattern | identifier ; pattern -> "_" | record_pattern | variant_pattern ;
record_pattern -> "{" ( identifier ( "=" pattern )? ( "," identifier ( "=" pattern )? )* ) ( "|" identifier ) "}" record_pattern -> "{" ( identifier ( "=" pattern )? ( "," identifier ( "=" pattern )? )* ) ( "|" identifier ) "}"
variant_pattern -> "`" identifier ( "(" ( "_" | compound_pattern | identifier ) ")" )? ; variant_pattern -> "`" identifier ( "(" ( "_" | compound_pattern | identifier ) ")" )? ;
let -> "let" pattern "=" expression ( "and" pattern "=" expression )* "in" expression ; parameters -> "(" ( identifier ( "," identifier )* )?")"
let -> "let" ( identifier parameters? | pattern ) "=" expression ( "and" ( identifier parameters? | pattern ) "=" expression )* "in" expression ;
control -> control ->
| if | if
| when | when
if -> "if" expression "then" expression "else" expression ; if -> "if" expression "then" expression "else" expression ;
when -> "when" expression "is" ( pattern "=>" expression )+ ; when -> "when" expression "is" ( ( identifier | pattern ) "=>" expression )+ ;
compound -> variant | record | list ; compound -> variant | record | list ;
variant -> "`" identifier ( "(" expression ")" )? ; variant -> "`" identifier ( "(" expression ")" )? ;
base_record -> expression ( "with" identifier "=" expression ( "," "with" identifier "=" expression )* )? base_record -> expression ( "with" identifier "=" expression ( "," "with" identifier "=" expression )* )?
record -> record ->
"{" ( identifier ("=" expression)? ( "," identifier ("=" expression)? )* )? ( "|" base_record )* "}" ; "{" ( identifier ("=" expression)? ( "," identifier ("=" expression)? )* )? ( "|" base_record )* "}" ;
list -> "[" ( expression ( "," expression )* )? "]" ; list -> "[" ( expression ( "," expression )* )? "]" ;
field -> expression "." identifier ;
index -> expression "[" expression "]" ;
identifier -> IDENTIFIER | "@" STRING ; identifier -> IDENTIFIER | "@" STRING ;
primary -> NUMBER | STRING | identifier | "(" expression ")" ; operand -> ( NUMBER | STRING | identifier | "(" expression ")" ) ;
selector -> "." identifier ;
index -> "[" expression "]" ;
arguments -> "(" ( "_" | expression ( "," ( "_" | expression ) )* )? ")" ;
primary -> operand ( selector | index | arguments ) ;