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122 lines
3.9 KiB
Plaintext
122 lines
3.9 KiB
Plaintext
/*
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File: Options
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*/
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// Ascii values of characters
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/var/const/ascii_A = 65
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/var/const/ascii_Z = 90
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/var/const/ascii_a = 97
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/var/const/ascii_z = 122
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/var/const/ascii_DOLLAR = 36 // $
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/var/const/ascii_ZERO = 48
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/var/const/ascii_NINE = 57
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/var/const/ascii_UNDERSCORE = 95 // _
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/*
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Class: n_scriptOptions
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*/
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/datum/n_scriptOptions/proc/CanStartID(char) //returns true if the character can start a variable, function, or keyword name (by default letters or an underscore)
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if(!isnum(char))
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char = text2ascii(char)
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return (char in ascii_A to ascii_Z) || (char in ascii_a to ascii_z) || char == ascii_UNDERSCORE || char == ascii_DOLLAR
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/datum/n_scriptOptions/proc/IsValidIDChar(char) //returns true if the character can be in the body of a variable, function, or keyword name (by default letters, numbers, and underscore)
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if(!isnum(char))
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char = text2ascii(char)
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return CanStartID(char) || IsDigit(char)
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/datum/n_scriptOptions/proc/IsDigit(char)
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if(!isnum(char))
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char = text2ascii(char)
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return char in ascii_ZERO to ascii_NINE
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/datum/n_scriptOptions/proc/IsValidID(id) //returns true if all the characters in the string are okay to be in an identifier name
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if(!CanStartID(id)) //don't need to grab first char in id, since text2ascii does it automatically
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return 0
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if(length(id) == 1)
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return 1
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for(var/i=2 to length(id))
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if(!IsValidIDChar(copytext(id, i, i + 1)))
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return 0
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return 1
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/*
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Class: nS_Options
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An implementation of <n_scriptOptions> for the n_Script language.
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*/
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/datum/n_scriptOptions/nS_Options
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var/list/symbols = list(
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"(",
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")",
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"\[",
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"]",
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";",
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",",
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"{",
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"}"
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) //scanner - Characters that can be in symbols
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/*
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Var: keywords
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An associative list used by the parser to parse keywords. Indices are strings which will trigger the keyword when parsed and the
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associated values are <nS_Keyword> types of which the <n_Keyword.Parse()> proc will be called.
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*/
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var/list/keywords = list(
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"if" = /datum/n_Keyword/nS_Keyword/kwIf,
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"else" = /datum/n_Keyword/nS_Keyword/kwElse,
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"elseif" = /datum/n_Keyword/nS_Keyword/kwElseIf,
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"while" = /datum/n_Keyword/nS_Keyword/kwWhile,
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"break" = /datum/n_Keyword/nS_Keyword/kwBreak,
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"continue" = /datum/n_Keyword/nS_Keyword/kwContinue,
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"return" = /datum/n_Keyword/nS_Keyword/kwReturn,
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"def" = /datum/n_Keyword/nS_Keyword/kwDef
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)
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var/list/assign_operators = list(
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"=" = null,
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"&=" = "&",
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"|=" = "|",
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"`=" = "`",
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"+=" = "+",
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"-=" = "-",
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"*=" = "*",
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"/=" = "/",
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"^=" = "^",
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"%=" = "%"
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)
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var/list/unary_operators = list(
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"!" = /datum/node/expression/operation/unary/LogicalNot,
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"~" = /datum/node/expression/operation/unary/BitwiseNot,
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"-" = /datum/node/expression/operation/unary/Minus
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)
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var/list/binary_operators = list(
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"==" = /datum/node/expression/operation/binary/Equal,
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"!=" = /datum/node/expression/operation/binary/NotEqual,
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">" = /datum/node/expression/operation/binary/Greater,
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"<" = /datum/node/expression/operation/binary/Less,
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">=" = /datum/node/expression/operation/binary/GreaterOrEqual,
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"<=" = /datum/node/expression/operation/binary/LessOrEqual,
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"&&" = /datum/node/expression/operation/binary/LogicalAnd,
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"||" = /datum/node/expression/operation/binary/LogicalOr,
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"&" = /datum/node/expression/operation/binary/BitwiseAnd,
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"|" = /datum/node/expression/operation/binary/BitwiseOr,
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"`" = /datum/node/expression/operation/binary/BitwiseXor,
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"+" = /datum/node/expression/operation/binary/Add,
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"-" = /datum/node/expression/operation/binary/Subtract,
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"*" = /datum/node/expression/operation/binary/Multiply,
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"/" = /datum/node/expression/operation/binary/Divide,
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"^" = /datum/node/expression/operation/binary/Power,
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"%" = /datum/node/expression/operation/binary/Modulo
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)
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/datum/n_scriptOptions/nS_Options/New()
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. = ..()
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for(var/O in assign_operators + binary_operators + unary_operators)
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if(!symbols.Find(O))
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symbols += O
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