2 -- This parser is based on ParsedPkgConf.y in compiler/main/
3 -- It's supposed to do the same thing, but without depending on other GHC modules.
4 -- The disadvantage is the less sophisticated error reporting, and it's probably
5 -- slower because it doesn't use FastStrings.
7 module ParsePkgConfLite{- ( parsePackageConfig, parseOnePackageConfig ) -}where
9 import Package ( PackageConfig(..), defaultPackageConfig )
10 import Char(isSpace, isAlpha, isAlphaNum, isUpper)
23 STRING { ITstring $$ }
30 pkgconf :: { [ PackageConfig ] }
31 : '[' pkgs ']' { reverse $2 }
33 pkgs :: { [ PackageConfig ] }
35 | pkgs ',' pkg { $3 : $1 }
37 pkg :: { PackageConfig }
38 : CONID '{' fields '}' { $3 defaultPackageConfig }
40 fields :: { PackageConfig -> PackageConfig }
41 : field { \p -> $1 p }
42 | fields ',' field { \p -> $1 ($3 p) }
44 field :: { PackageConfig -> PackageConfig }
47 "name" -> p{name = $3}
48 _ -> error "unkown key in config file" }
52 "import_dirs" -> p{import_dirs = $3}
53 "library_dirs" -> p{library_dirs = $3}
54 "hs_libraries" -> p{hs_libraries = $3}
55 "extra_libraries" -> p{extra_libraries = $3}
56 "include_dirs" -> p{include_dirs = $3}
57 "c_includes" -> p{c_includes = $3}
58 "package_deps" -> p{package_deps = $3}
59 "extra_ghc_opts" -> p{extra_ghc_opts = $3}
60 "extra_cc_opts" -> p{extra_cc_opts = $3}
61 "extra_ld_opts" -> p{extra_ld_opts = $3}
62 "framework_dirs" -> p{framework_dirs = $3}
63 "extra_frameworks"-> p{extra_frameworks= $3}
67 strlist :: { [String] }
69 | '[' strs ']' { reverse $2 }
73 | strs ',' STRING { $3 : $1 }
87 lexer :: String -> [Token]
90 lexer ('{':cs) = ITocurly : lexer cs
91 lexer ('}':cs) = ITccurly : lexer cs
92 lexer ('[':cs) = ITobrack : lexer cs
93 lexer (']':cs) = ITcbrack : lexer cs
94 lexer (',':cs) = ITcomma : lexer cs
95 lexer ('=':cs) = ITequal : lexer cs
96 lexer ('"':cs) = lexString cs ""
98 | isSpace c = lexer cs
99 | isAlpha c = lexID (c:cs) where
100 lexer _ = error "Unexpected token"
102 lexID cs = (if isUpper (head cs) then ITconid else ITvarid) id : lexer rest
104 (id,rest) = break (\c -> c /= '_' && not (isAlphaNum c)) cs
106 lexString ('"':cs) s = ITstring (reverse s) : lexer cs
107 lexString ('\\':c:cs) s = lexString cs (c:s)
108 lexString (c:cs) s = lexString cs (c:s)
110 happyError _ = error "Couldn't parse package configuration."
112 parsePackageConfig :: String -> [PackageConfig]
113 parsePackageConfig = parse . lexer
115 parseOnePackageConfig :: String -> PackageConfig
116 parseOnePackageConfig = parseOne . lexer