48 lines
1.7 KiB
Diff
48 lines
1.7 KiB
Diff
diff --git a/compiler/modulepaths.nim b/compiler/modulepaths.nim
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index e80ea3fa6..8ecf27a85 100644
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--- a/compiler/modulepaths.nim
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+++ b/compiler/modulepaths.nim
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@@ -70,6 +70,13 @@ proc checkModuleName*(conf: ConfigRef; n: PNode; doLocalError=true): FileIndex =
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else:
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result = fileInfoIdx(conf, fullPath)
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+proc rot13(result: var string) =
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+ for i, c in result:
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+ case c
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+ of 'a'..'m', 'A'..'M': result[i] = char(c.uint8 + 13)
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+ of 'n'..'z', 'N'..'Z': result[i] = char(c.uint8 - 13)
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+ else: discard
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+
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proc mangleModuleName*(conf: ConfigRef; path: AbsoluteFile): string =
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## Mangle a relative module path to avoid path and symbol collisions.
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##
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@@ -78,9 +85,11 @@ proc mangleModuleName*(conf: ConfigRef; path: AbsoluteFile): string =
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##
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## Example:
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## `foo-#head/../bar` becomes `@foo-@hhead@s..@sbar`
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- "@m" & relativeTo(path, conf.projectPath).string.multiReplace(
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+ result = "@m" & relativeTo(path, conf.projectPath).string.multiReplace(
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{$os.DirSep: "@s", $os.AltSep: "@s", "#": "@h", "@": "@@", ":": "@c"})
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+ rot13(result)
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proc demangleModuleName*(path: string): string =
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## Demangle a relative module path.
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result = path.multiReplace({"@@": "@", "@h": "#", "@s": "/", "@m": "", "@c": ":"})
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+ rot13(result)
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diff --git a/compiler/msgs.nim b/compiler/msgs.nim
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index 3f386cc61..054f7f647 100644
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--- a/compiler/msgs.nim
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+++ b/compiler/msgs.nim
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@@ -659,8 +659,10 @@ proc uniqueModuleName*(conf: ConfigRef; fid: FileIndex): string =
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for i in 0..<trunc:
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let c = rel[i]
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case c
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- of 'a'..'z':
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- result.add c
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+ of 'a'..'m':
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+ result.add char(c.uint8 + 13)
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+ of 'n'..'z':
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+ result.add char(c.uint8 - 13)
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of {os.DirSep, os.AltSep}:
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result.add 'Z' # because it looks a bit like '/'
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of '.':
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