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9dd8c0cffe
This makes option aliases more powerful by enabling them to pass along arguments to the option they're aliasing. For example, if we have a joined option "-foo=", we can now specify a flag option "-bar" to be an alias of that, with the argument "baz". This is especially useful for the cl.exe compatible clang driver, where many options are aliases. For example, this patch enables us to alias "/Ox" to "-O3" (-O is a joined option), and "/WX" to "-Werror" (again, -W is a joined option). Differential Revision: http://llvm-reviews.chandlerc.com/D1245 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187537 91177308-0d34-0410-b5e6-96231b3b80d8
25 lines
1.1 KiB
TableGen
25 lines
1.1 KiB
TableGen
include "llvm/Option/OptParser.td"
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def OptFlag1 : OptionFlag;
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def OptFlag2 : OptionFlag;
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def OptFlag3 : OptionFlag;
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def A : Flag<["-"], "A">, HelpText<"The A option">, Flags<[OptFlag1]>;
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def B : Joined<["-"], "B">, HelpText<"The B option">, MetaVarName<"B">, Flags<[OptFlag2]>;
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def C : Separate<["-"], "C">, HelpText<"The C option">, MetaVarName<"C">, Flags<[OptFlag1]>;
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def SLASH_C : Separate<["/", "-"], "C">, HelpText<"The C option">, MetaVarName<"C">, Flags<[OptFlag3]>;
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def D : CommaJoined<["-"], "D">, HelpText<"The D option">, MetaVarName<"D">;
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def E : MultiArg<["-"], "E", 2>, Flags<[OptFlag1, OptFlag2]>;
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def F : JoinedOrSeparate<["-"], "F">, HelpText<"The F option">, MetaVarName<"F">;
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def G : JoinedAndSeparate<["-"], "G">, HelpText<"The G option">, MetaVarName<"G">;
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def Ceq : Joined<["-", "--"], "C=">, Alias<C>, Flags<[OptFlag1]>;
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def H : Flag<["-"], "H">, Flags<[HelpHidden]>;
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def my_group : OptionGroup<"my group">;
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def I : Flag<["-"], "I">, Alias<H>, Group<my_group>;
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def J : Flag<["-"], "J">, Alias<B>, AliasArgs<["foo"]>;
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def Joo : Flag<["-"], "Joo">, Alias<B>, AliasArgs<["bar"]>;
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