experimental/hash
adding primop function calculating hash of a string Signed-off-by: Marc Weber <marco-oweber@gmx.de>
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		|  | @ -1107,6 +1107,30 @@ static void prim_unsafeDiscardOutputDependency(EvalState & state, Value * * args | ||||||
| } | } | ||||||
| 
 | 
 | ||||||
| 
 | 
 | ||||||
|  | static void prim_hash(EvalState & state, Value * * args, Value & v) | ||||||
|  | { | ||||||
|  |     PathSet context; | ||||||
|  | 
 | ||||||
|  |     string type = state.forceStringNoCtx(*args[0]); | ||||||
|  |     string s = state.forceStringNoCtx(*args[1]); | ||||||
|  | 
 | ||||||
|  |     HashType ht; | ||||||
|  |     if (type == "md5"){ | ||||||
|  |       ht = htMD5; | ||||||
|  |     } else if (type == "sha256"){ | ||||||
|  |       ht = htSHA256; | ||||||
|  |     } else { | ||||||
|  |       throw Error(format("bad hash type `%1%'") % type); | ||||||
|  |     } | ||||||
|  | 
 | ||||||
|  |     Hash h = hashString(ht, s); | ||||||
|  | 
 | ||||||
|  |     string hash = printHash(h); | ||||||
|  | 
 | ||||||
|  |     mkString(v, hash, context); | ||||||
|  | }; | ||||||
|  | 
 | ||||||
|  | 
 | ||||||
| /*************************************************************
 | /*************************************************************
 | ||||||
|  * Versions |  * Versions | ||||||
|  *************************************************************/ |  *************************************************************/ | ||||||
|  | @ -1235,6 +1259,8 @@ void EvalState::createBaseEnv() | ||||||
|     addPrimOp("__unsafeDiscardStringContext", 1, prim_unsafeDiscardStringContext); |     addPrimOp("__unsafeDiscardStringContext", 1, prim_unsafeDiscardStringContext); | ||||||
|     addPrimOp("__unsafeDiscardOutputDependency", 1, prim_unsafeDiscardOutputDependency); |     addPrimOp("__unsafeDiscardOutputDependency", 1, prim_unsafeDiscardOutputDependency); | ||||||
| 
 | 
 | ||||||
|  |     addPrimOp("__hash", 2, prim_hash); | ||||||
|  | 
 | ||||||
|     // Versions
 |     // Versions
 | ||||||
|     addPrimOp("__parseDrvName", 1, prim_parseDrvName); |     addPrimOp("__parseDrvName", 1, prim_parseDrvName); | ||||||
|     addPrimOp("__compareVersions", 2, prim_compareVersions); |     addPrimOp("__compareVersions", 2, prim_compareVersions); | ||||||
|  |  | ||||||
							
								
								
									
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								tests/lang/eval-okay-hash.exp
									
										
									
									
									
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								tests/lang/eval-okay-hash.exp
									
										
									
									
									
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							|  | @ -0,0 +1 @@ | ||||||
|  | [ "6c69ee7f211c640419d5366cc076ae46" "bb3438fbabd460ea6dbd27d153e2233b" "900a4469df00ccbfd0c145c6d1e4b7953dd0afafadd7534e3a4019e8d38fc663" "ad0387b3bd8652f730ca46d25f9c170af0fd589f42e7f23f5a9e6412d97d7e56" ] | ||||||
							
								
								
									
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								tests/lang/eval-okay-hash.nix
									
										
									
									
									
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								tests/lang/eval-okay-hash.nix
									
										
									
									
									
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							|  | @ -0,0 +1,6 @@ | ||||||
|  | let | ||||||
|  |   md5 = builtins.hash "md5"; | ||||||
|  |   sha256 = builtins.hash "sha256"; | ||||||
|  |   strings = [ "text 1" "text 2" ]; | ||||||
|  | in | ||||||
|  |   (builtins.map md5 strings) ++ (builtins.map sha256 strings) | ||||||
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