add keywords
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1 changed files with 52 additions and 33 deletions
85
lib.nix
85
lib.nix
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@ -32,10 +32,23 @@ let
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if isString expr || isPath expr then toString expr
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else error "Value '${toString expr}' is not a valid string";
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validFuncName = fnName:
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if isString fnName && builtins.stringLength fnName > 0 then raw fnName
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else error "Value '${toString fnName}' is not a valid function name";
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################################################################################
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# Low-Level
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################################################################################
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isRaw = expr: getType expr == "raw";
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raw = expr:
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if isRaw expr then
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{ _type = "raw"; raw = expr.raw; }
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else if isString expr then
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{ _type = "raw"; raw = expr; }
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else
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error "Value '${toString expr}' is not supported for a raw type";
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isJoin = expr: getType expr == "_join";
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join = sep: expr:
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if isList expr then { _type = "_join"; sep = validString sep; parts = expr; }
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@ -51,7 +64,37 @@ let
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pipe = join ".";
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spaceBetween = join " ";
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op = operation: left: right: concat [ (raw "(") (join " ${operation} " [ left right ]) (raw ")") ];
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wrap = start: end: expr:
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concat [ (raw start) expr (raw end) ];
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wrapParen = wrap "(" ")";
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call = fnName: args:
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concat [ (validFuncName fnName) (wrapParen (join ", " args)) ];
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require = name: call "require" [ name ];
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kw_and = raw "and";
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kw_or = raw "or";
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kw_not = raw "not";
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kw_function = raw "function";
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kw_end = raw "end";
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kw_break = raw "break";
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kw_return = raw "return";
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kw_if = raw "if";
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kw_in = raw "in";
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kw_then = raw "then";
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kw_else = raw "else";
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kw_elseif = raw "elseif";
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kw_local = raw "local";
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kw_for = raw "for";
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kw_do = raw "do";
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kw_until = raw "until";
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kw_while = raw "while";
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kw_repeat = raw "repeat";
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# kw_false = raw "false";
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# kw_true = raw "true";
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# kw_nil = raw "nil";
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op = operation: left: right: wrapParen (join " ${operation} " [ left right ]);
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add = op "+";
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sub = op "-";
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@ -67,46 +110,22 @@ let
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gte = op ">=";
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lte = op "<=";
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and = op "and";
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or = op "or";
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not = expr: spaceBetween [ (raw "not") expr ];
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and = op kw_and;
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or = op kw_or;
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not = expr: spaceBetween [ kw_not expr ];
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isRaw = expr: getType expr == "raw";
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raw = expr:
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if isRaw expr then
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{ _type = "raw"; raw = expr.raw; }
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else if isString expr then
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{ _type = "raw"; raw = expr; }
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else
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error "Value '${toString expr}' is not supported for a raw type";
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call = fnName: args:
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let
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luaFn =
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if isString fnName && builtins.stringLength fnName > 0 then raw fnName
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else error "Value '${toString fnName}' is not a valid function name";
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in
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concat (
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[ luaFn (raw "(") ]
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++ [ (join ", " args) ]
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++ [ (raw ")") ]
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);
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require = name: call "require" [ name ];
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local = expr: spaceBetween [ (raw "local") expr ];
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local = expr: spaceBetween [ kw_local expr ];
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set = variable: value: join " = " [ (raw variable) value ];
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func = name: params: body:
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func = fnName: params: body:
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(concatLines
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([
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(concat [
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(spaceBetween (map raw [ "function" name ]))
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(raw "(")
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(join ", " (map raw params))
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(raw ")")
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(spaceBetween [ kw_function (validFuncName fnName) ])
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(wrapParen (join ", " (map raw params)))
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])
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]
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++ body
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++ [ (raw "end") ])
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++ [ kw_end ])
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);
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isLuaNil = expr: getType expr == "nil";
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