38 lines
1.2 KiB
Plaintext
38 lines
1.2 KiB
Plaintext
expression ->
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| sequence
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// | apply
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| unary
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| binary
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// | let
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| compound
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| control
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| field
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| index
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| identifier
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| primary
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grouping -> "(" expression ")" ;
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unary -> ( "-" | "!" ) expression ;
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binary -> expression operator expression ;
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operator ->
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| "==" | "!=" | "<" | "<=" | ">" | ">="
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| "+" | "-" | "*" | "/"
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// | "|>" | "<|" | ">>" | "<<"
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| "++" ;
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control ->
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| if
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| when
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if -> "if" expression "then" expression "else" expression ;
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variant_pattern -> "`" identifier ( "(" ( ( "_" | identifier ) ( "," ( "_" | identifier )* )? ) ")" )? ;
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when -> "when" expression "is" ( variant_pattern "=>" expression )+ ;
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compound -> variant | record | list ;
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variant -> "`" identifier ( "(" ( expression ( "," expression)* )? ")" )? ;
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base_record -> expression ( "with" identifier "=" expression ( "," "with" identifier "=" expression )* )?
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record ->
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"{" ( identifier ("=" expression)? ( "," identifier ("=" expression)? )* )? ( "|" base_record )* "}" ;
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list -> "[" ( expression ( "," expression )* )? "]" ;
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field -> expression "." identifier ;
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index -> expression "[" expression "]" ;
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identifier -> IDENTIFIER | "@" STRING ;
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primary -> NUMBER | STRING | identifier | "(" expression ")" ;
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