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- -type matchExpression() :: [ matchFunction(), ... ].
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- -type matchFunction() :: { matchHead(), matchConditions(), matchBody()}.
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- -type matchHead() :: matchVariable() | '_' | { matchHeadPart(), ...}.
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- -type matchHeadPart() :: term() | matchVariable() | '_'.
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- -type matchVariable() :: '$<number>'.
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- -type matchConditions() :: [ matchCondition(), ...] | [].
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- -type matchCondition() :: { guardFunction() } | { guardFunction(), conditionExpression(), ... }.
- -type boolFunction() :: is_atom | is_float | is_integer | is_list | is_number | is_pid | is_port | is_reference | is_tuple | is_map | map_is_key | is_binary | is_function | is_record | 'and' | 'or' | 'not' | 'xor' | 'andalso' | 'orelse'.
- -type conditionExpression() :: exprMatchVariable() | { guardFunction() } | { guardFunction(), conditionExpression(), ... } | termConstruct().
- -type exprMatchVariable() :: matchVariable() (bound in the MatchHead) | '$_' | '$$'
- -type termConstruct():: {{}} | {{ conditionExpression(), ... }} | [] | [conditionExpression(), ...] | #{} | #{term() => conditionExpression(), ...} | nonCompositeTerm() | constant().
- -type nonCompositeTerm() :: term(). %% (not list or tuple or map)
- -type constant() :: {const, term()}.
- -type guardFunction() :: boolFunction() | abs | element | hd | length | map_get | map_size | node | round | size | bit_size | tl | trunc | '+' | '-' | '*' | 'div' | 'rem' | 'band' | 'bor' | 'bxor' | 'bnot' | 'bsl' | 'bsr' | '>' | '>=' | '<' | '=<' | '=:=' | '==' | '=/=' | '/=' | self.
- -type matchBody() :: [ conditionExpression(), ... ].
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