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78 lines
3.5 KiB
78 lines
3.5 KiB
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PROGRAM <- _ STATEMENTS
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STATEMENTS <- (STATEMENT (';' _)?)*
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STATEMENT <- DEBUGGER / RETURN / EXPRESSION
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DEBUGGER <- debugger
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RETURN <- return End _ / return EXPRESSION
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EXPRESSION <- ASSIGNMENT / LOGICAL_OR
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ASSIGNMENT <- MUTABLE PRIMARY (ARGUMENTS / INDEX / DOT)* '=' _ EXPRESSION
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LOGICAL_OR <- LOGICAL_AND ('||' _ LOGICAL_AND)*
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LOGICAL_AND <- CONDITION ('&&' _ CONDITION)*
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CONDITION <- ADDITIVE (CONDITION_OPERATOR ADDITIVE)*
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ADDITIVE <- UNARY_PLUS (ADDITIVE_OPERATOR UNARY_PLUS)*
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UNARY_PLUS <- UNARY_PLUS_OPERATOR? UNARY_MINUS
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UNARY_MINUS <- UNARY_MINUS_OPERATOR? UNARY_NOT
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UNARY_NOT <- UNARY_NOT_OPERATOR? MULTIPLICATIVE
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MULTIPLICATIVE <- CALL (MULTIPLICATIVE_OPERATOR CALL)*
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CALL <- PRIMARY (ARGUMENTS / INDEX / DOT)*
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ARGUMENTS <- '(' _ (EXPRESSION (',' _ EXPRESSION)*)? ')' _
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INDEX <- '[' _ EXPRESSION ']' _
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DOT <- '.' _ IDENTIFIER
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WHILE <- while EXPRESSION BLOCK
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IF <- if EXPRESSION BLOCK (else if EXPRESSION BLOCK)* (else BLOCK)?
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PRIMARY <- WHILE / IF / FUNCTION / OBJECT / ARRAY / UNDEFINED / BOOLEAN / NUMBER / IDENTIFIER / STRING / INTERPOLATED_STRING / '(' _ EXPRESSION ')' _
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FUNCTION <- fn PARAMETERS BLOCK
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PARAMETERS <- '(' _ (PARAMETER (',' _ PARAMETER)*)? ')' _
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PARAMETER <- MUTABLE IDENTIFIER
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BLOCK <- '{' _ STATEMENTS '}' _
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CONDITION_OPERATOR <- < ('==' / '!=' / '<=' / '<' / '>=' / '>') > _
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ADDITIVE_OPERATOR <- < [-+] > _
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UNARY_PLUS_OPERATOR <- < '+' > _
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UNARY_MINUS_OPERATOR <- < '-' > _
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UNARY_NOT_OPERATOR <- < '!' > _
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MULTIPLICATIVE_OPERATOR <- < [*/%] > _
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IDENTIFIER <- < IdentInitChar IdentChar* > _
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OBJECT <- '{' _ (OBJECT_PROPERTY (',' _ OBJECT_PROPERTY)*)? '}' _
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OBJECT_PROPERTY <- MUTABLE IDENTIFIER ':' _ EXPRESSION
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ARRAY <- '[' _ (EXPRESSION (',' _ EXPRESSION)*)? ']' _
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UNDEFINED <- < 'undefined' > __
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BOOLEAN <- < ('true' / 'false') > __
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MUTABLE <- (< 'mut' > __)?
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~debugger <- 'debugger' __
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~return <- 'return' !IdentInitChar Space*
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~while <- 'while' __
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~if <- 'if' __
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~else <- 'else' __
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~fn <- 'fn' __
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NUMBER <- < [0-9]+ > _
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STRING <- ['] < (!['] .)* > ['] _
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INTERPOLATED_STRING <- '"' ('{' _ EXPRESSION '}' / INTERPOLATED_CONTENT)* '"' _
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INTERPOLATED_CONTENT <- (!["{] .) (!["{] .)*
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~_ <- (Space / End)*
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__ <- !IdentInitChar (Space / End)*
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~Space <- ' ' / '\t' / Comment
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~End <- EndOfLine / EndOfFile
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Comment <- '/*' (!'*/' .)* '*/' / ('#' / '//') (!End .)* &End
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EndOfLine <- '\r\n' / '\n' / '\r'
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EndOfFile <- !.
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IdentInitChar <- [a-zA-Z_]
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IdentChar <- [a-zA-Z0-9_]
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