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20 lines
896 B
Text
20 lines
896 B
Text
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WHITESPACE = _{ " " | "\t" }
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char = { ASCII_ALPHANUMERIC | "." | "_" | "/" | "-" | "=" | ">" | "<" | "!" | "'" | "#" | "\"" }
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text = @{ char+ | WHITESPACE | NEWLINE }
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env_variable_char = { 'A'..'Z' | '0'..'9' }
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macro_parameter = @{char+}
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macro_name = @{char+}
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macro_parameters = _{ ("," | macro_parameter)* }
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spec_macro_without_parameters = _{"%{" ~ macro_name ~ "}" | "%" ~ macro_name}
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spec_macro_with_parameters = _{"%{" ~ macro_name ~ "("~macro_parameters~")" ~ "}" | "%" ~ macro_name ~ "("~macro_parameters~")"}
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spec_macro = { (spec_macro_with_parameters|spec_macro_without_parameters) }
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spec_optional_macro = @{ "%{?" ~ char+ ~ "}" }
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function = { "%(" ~ (spec_macro | spec_optional_macro | text)* ~ ")" }
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text_with_macros = { function | spec_macro | spec_optional_macro }
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file = {SOI ~ text* ~ (text | text_with_macros)+ ~ text* ~ EOI}
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env_variable = @{"$" ~ (env_variable_char | "_")+}
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