fix(Lib/platform): machine() result fixed for some arch; closes #48

Author: litlighilit

src/pylib/Lib/platform.nim

@@ -3,12 +3,50 @@
 import ./private/platformInfo
 import ../pystring/strimpl
 export strimpl
-import std/strutils
 
 proc version*(): PyStr = str `platform.version`()
 
-func python_implementation*(): PyStr = str "PyNim"
-func system*(): PyStr = str `platform.system`
-const machineS = str hostCPU.toUpperAscii()
-func machine*(): PyStr = machineS
+func python_implementation*(): PyStr{.inline.} = str "PyNim"
+func system*(): PyStr{.inline.} = str `platform.system`
+
+const machineS = hostCPU
+#[ doc says:
+
+```
+Possible values:
+  "i386", "amd64",
+  "powerpc", "powerpc64", "powerpc64el",
+
+  "alpha", "sparc", "loongarch64".
+  "mips", "mipsel", "mips64", "mips64el", 
+  "arm", "arm64", "riscv32", "riscv64",
+```
+]#
+# refer to compiler/platform.nim,
+# there're more
+
+# compiler/semfold.nim
+# proc getConstExpr(m: PSym, n: PNode; idgen: IdGenerator; g: ModuleGraph): PNode
+# of mHostCPU: result = newStrNodeT(platform.CPU[g.config.target.targetCPU].name.toLowerAscii, n, g)
+
+when defined(windows):
+  import std/strutils
+  template winNormMachine(machine): string =
+    case machine
+    of "i386": "x86"
+    of "alpha": "Alpha"
+    elif machine.startsWith"powerpc": "PowerPC"
+    elif machine.startsWith"mips": "MIPS"
+    #elif machine.startsWith"arm": machine.toUpperAscii
+    else:  # including ia64, arm[64], amd64
+      machine
+
+func machine*(): PyStr{.inline.} =
+  when defined(windows):
+    winNormMachine machineS
+  else:
+    case machineS
+    of "amd64": "x86_64"
+    of "arm64": "aarch64"
+    else: machineS