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b5f8eaf8a9
▫ Signals can now be rejected by Subspace broadcasters through a specific data[] parameter. ▫ Improved the log browser. ▫ Log browsers and telecommunication monitors no longer require access to use. You do need access to delete logs, however. ▫ Intercoms need power to work. They don't drain power, they just need a constant flow of equipment power. As such, that offline intercom sprite's now finally being put to use. Scripting language: ▫ Sorry about all the files; they're all necessary! It's important to notice that the basic structure of the scripting language code is not mine; I cannibalized the base structure from some obscure BYOND project. It's pretty well documented, and I'd say easier to browse through than atmos. Here's the basic deal: A compiler datum manages the relationships between the three main subsystems of a scripting language: the Scanner, the Parser, and the Interpreter. The Scanner splits raw text into token datums that the Parser can read. The Parser transforms the otherwise random bits and strings into ordered AST Trees and nodes for the Interpreter to read. The interpreter actually executes the code and handles scope/functions/code blocks. git-svn-id: http://tgstation13.googlecode.com/svn/trunk@3193 316c924e-a436-60f5-8080-3fe189b3f50e
82 lines
3.8 KiB
Plaintext
82 lines
3.8 KiB
Plaintext
/*
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File: Options
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*/
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var/const //Ascii values of characters
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ascii_A =65
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ascii_Z =90
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ascii_a =97
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ascii_z =122
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ascii_DOLLAR = 36 // $
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ascii_ZERO=48
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ascii_NINE=57
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ascii_UNDERSCORE=95 // _
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/*
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Class: n_scriptOptions
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*/
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n_scriptOptions
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proc
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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))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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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))char=text2ascii(char)
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return CanStartID(char) || IsDigit(char)
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IsDigit(char)
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if(!isnum(char))char=text2ascii(char)
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return char in ascii_ZERO to ascii_NINE
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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(lentext(id)==1) return 1
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for(var/i=2 to lentext(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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nS_Options
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var
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list
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symbols = list("(", ")", "\[", "]", ";", ",", "{", "}") //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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keywords = list("if" = /n_Keyword/nS_Keyword/kwIf, "else" = /n_Keyword/nS_Keyword/kwElse, \
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"while" = /n_Keyword/nS_Keyword/kwWhile, "break" = /n_Keyword/nS_Keyword/kwBreak, \
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"continue" = /n_Keyword/nS_Keyword/kwContinue, \
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"return" = /n_Keyword/nS_Keyword/kwReturn, "def" = /n_Keyword/nS_Keyword/kwDef)
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list
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assign_operators=list("=" = 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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unary_operators =list("!" = /node/expression/operator/unary/LogicalNot, "~" = /node/expression/operator/unary/BitwiseNot,
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"-" = /node/expression/operator/unary/Minus)
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binary_operators=list("==" = /node/expression/operator/binary/Equal, "!=" = /node/expression/operator/binary/NotEqual,
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">" = /node/expression/operator/binary/Greater, "<" = /node/expression/operator/binary/Less,
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">=" = /node/expression/operator/binary/GreaterOrEqual,"<=" = /node/expression/operator/binary/LessOrEqual,
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"&&" = /node/expression/operator/binary/LogicalAnd, "||" = /node/expression/operator/binary/LogicalOr,
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"&" = /node/expression/operator/binary/BitwiseAnd, "|" = /node/expression/operator/binary/BitwiseOr,
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"`" = /node/expression/operator/binary/BitwiseXor, "+" = /node/expression/operator/binary/Add,
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"-" = /node/expression/operator/binary/Subtract, "*" = /node/expression/operator/binary/Multiply,
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"/" = /node/expression/operator/binary/Divide, "^" = /node/expression/operator/binary/Power,
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"%" = /node/expression/operator/binary/Modulo)
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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)) symbols+=O |