43 lines
1.1 KiB
Plaintext
43 lines
1.1 KiB
Plaintext
# Tokenizer
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DIGIT = [0-9]
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ID = [a-zA-Z_]
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CHAR = ... \ '"'
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PITCH = 'c' | 'd' | 'e' | 'f' | 'g' | 'a' | 'h'
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PITCH_MODIFIER = 'b' | '#'
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integer := '-' DIGIT+ | DIGIT+
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string := '"' CHAR* '"'
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note := '@' PITCH PITCH_MODIFIER? DIGIT? ['.' DIGIT+ 'd'?]?
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identifier := ID [ID|DIGIT]*
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percent := DIGIT+ '%'
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# Parser
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expr := integer accessTail | integer
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expr := percent accessTail | percent
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expr := string accessTail | string
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expr := note accessTail | note
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expr := identifier accessTail | identifier '=' expr | functionCall | identifier
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expr := list accessTail | list
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expr := functionCall accessTail | functionCall
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functionCall := identifier list
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accessTail := '.' expr accessTail | e
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list := '[' ']' | '[' expr listTail
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listTail := expr ', ' listTail | ']'
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argList := '(' ')' | '(' expr argListTail
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argListTail := expr ', ' argListTail | ')'
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block := '{' stmt* '}'
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stmt := expr asteriskTail | expr #nie wiem czy zamiast 'expr asteriskTail' nie powinno być wprost co może wyprodukować iterator dla asterisk
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asteriskTail := '*' stmt | e
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stmt := block
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stmt := 'return' expr
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stmt := 'function' identifier list block
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program := stmt*
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