reduce compiler warnings

confutils.nim

@@ -465,7 +465,7 @@ else:
 
 # TODO remove the overloads here to get better "missing overload" error message
 proc parseCmdArg*(T: type InputDir, p: string): T =
-  if not dirExists(p.string):
+  if not dirExists(p):
     raise newException(ValueError, "Directory doesn't exist")
 
   T(p)
@@ -474,17 +474,17 @@ proc parseCmdArg*(T: type InputFile, p: string): T =
   # TODO this is needed only because InputFile cannot be made
   # an alias of TypedInputFile at the moment, because of a generics
   # caching issue
-  if not fileExists(p.string):
+  if not fileExists(p):
     raise newException(ValueError, "File doesn't exist")
 
   when not defined(nimscript):
     try:
-      let f = system.open(p.string, fmRead)
+      let f = system.open(p, fmRead)
       close f
     except IOError:
       raise newException(ValueError, "File not accessible")
 
-  T(p.string)
+  T(p)
 
 proc parseCmdArg*(T: type TypedInputFile, p: string): T =
   var path = p
@@ -513,10 +513,10 @@ template parseCmdArg*(T: type string, s: string): string =
   s
 
 func parseCmdArg*(T: type SomeSignedInt, s: string): T =
-  T parseBiggestInt(string s)
+  T parseBiggestInt(s)
 
 func parseCmdArg*(T: type SomeUnsignedInt, s: string): T =
-  T parseBiggestUInt(string s)
+  T parseBiggestUInt(s)
 
 func parseCmdArg*(T: type SomeFloat, p: string): T =
   parseFloat(p)
@@ -525,10 +525,10 @@ func parseCmdArg*(T: type bool, p: string): T =
   try:
     p.len == 0 or parseBool(p)
   except CatchableError:
-    raise newException(ValueError, "'" & p.string & "' is not a valid boolean value. Supported values are on/off, yes/no, true/false or 1/0")
+    raise newException(ValueError, "'" & p & "' is not a valid boolean value. Supported values are on/off, yes/no, true/false or 1/0")
 
 func parseCmdArg*(T: type enum, s: string): T =
-  parseEnum[T](string(s))
+  parseEnum[T](s)
 
 proc parseCmdArgAux(T: type, s: string): T = # {.raises: [ValueError].} =
   # The parseCmdArg procs are allowed to raise only `ValueError`.
@@ -662,6 +662,13 @@ proc generateFieldSetters(RecordType: NimNode): NimNode =
                              newCall(bindSym"requiresInput", fixedFieldType),
                              newCall(bindSym"acceptsMultipleValues", fixedFieldType))
 
+    when (NimMajor, NimMinor) >= (1, 6):
+      result.add quote do:
+        {.push hint[XCannotRaiseY]: off.}
+    else:
+      result.add quote do:
+        {.push hint[XDeclaredButNotUsed]: off.}
+
     result.add quote do:
       proc `completerName`(val: string): seq[string] {.
         nimcall
@@ -681,12 +688,15 @@ proc generateFieldSetters(RecordType: NimNode): NimNode =
           # TODO: For some reason, the normal `setField` rejects enum fields
           # when they are used as case discriminators. File this as a bug.
           if isSome(val):
-            `configField` = parseEnumNormalized[type(`configField`)](string(val.get))
+            `configField` = parseEnumNormalized[type(`configField`)](val.get)
           else:
             `configField` = `defaultValue`
         else:
           setField(`configField`, val, `defaultValue`)
 
+    result.add quote do:
+      {.pop.}
+
   result.add settersArray
   debugMacroResult "Field Setters"
 
@@ -891,15 +901,21 @@ proc loadImpl[C, SecondarySources](
   let confAddr = addr result
 
   template applySetter(setterIdx: int, cmdLineVal: string) =
+    when (NimMajor, NimMinor) >= (1, 6):
+      {.warning[BareExcept]:off.}
+
     try:
       fieldSetters[setterIdx][1](confAddr[], some(cmdLineVal))
       inc fieldCounters[setterIdx]
     except:
       fail("Error while processing the ",
            fgOption, fieldSetters[setterIdx][0],
-           "=", cmdLineVal.string, resetStyle, " parameter: ",
+           "=", cmdLineVal, resetStyle, " parameter: ",
            getCurrentExceptionMsg())
 
+    when (NimMajor, NimMinor) >= (1, 6):
+      {.warning[BareExcept]:on.}
+
   when hasCompletions:
     template getArgCompletions(opt: OptInfo, prefix: string): seq[string] =
       fieldSetters[opt.idx][2](prefix)
@@ -1017,7 +1033,8 @@ proc loadImpl[C, SecondarySources](
       flushOutputAndQuit QuitSuccess
 
   for kind, key, val in getopt(cmdLine):
-    let key = string(key)
+    when key isnot string:
+      let key = string(key)
     case kind
     of cmdLongOption, cmdShortOption:
       processHelpAndVersionOptions key

confutils/cli_parser.nim

@@ -55,14 +55,14 @@ func handleShortOption(p: var OptParser; cmd: string) =
   var i = p.pos
   p.kind = cmdShortOption
   if i < cmd.len:
-    add(p.key.string, cmd[i])
+    add(p.key, cmd[i])
     inc(i)
   p.inShortState = true
   while i < cmd.len and cmd[i] in {'\t', ' '}:
     inc(i)
     p.inShortState = false
   if i < cmd.len and cmd[i] in {':', '='} or
-      card(p.shortNoVal) > 0 and p.key.string[0] notin p.shortNoVal:
+      card(p.shortNoVal) > 0 and p.key[0] notin p.shortNoVal:
     if i < cmd.len and cmd[i] in {':', '='}:
       inc(i)
     p.inShortState = false

confutils/config_file.nim

@@ -1,6 +1,10 @@
 import
-  std/[tables, macrocache, typetraits],
+  std/[tables, macrocache],
-  stew/shims/macros,
+  stew/shims/macros
+  
+{.warning[UnusedImport]:off.}
+import
+  std/typetraits,
   ./defs
 
 #[
@@ -312,7 +316,7 @@ proc generateConfigFileSetters(confType, optType: NimNode,
            data*: seq[`optT`]
            setters: array[`numSetters`, `SetterProcType`]
 
-      proc defaultConfigFileSetter(s: var `T`, cf: ref `CF`): bool {.nimcall, gcsafe.} =
+      proc defaultConfigFileSetter(s: var `T`, cf: ref `CF`): bool {.nimcall, gcsafe, used.} =
         discard
 
       `setterProcs`

confutils/std/net.nim

@@ -5,7 +5,7 @@ export stewNet
 export ValidIpAddress
 
 func parseCmdArg*(T: type ValidIpAddress, s: string): T =
-  ValidIpAddress.init(string s)
+  ValidIpAddress.init(s)
 
 func completeCmdArg*(T: type ValidIpAddress, val: string): seq[string] =
   # TODO: Maybe complete the local IP address?
@@ -17,7 +17,7 @@ func parseCmdArg*(T: type Port, s: string): T =
       "The supplied port must be an integer value in the range 1-65535")
 
   var intVal: int
-  let parsedChars = try: parseInt(string s, intVal):
+  let parsedChars = try: parseInt(s, intVal):
                     except CatchableError: fail()
 
   if parsedChars != len(s) or intVal < 1 or intVal > 65535:

confutils/winreg/reader.nim

@@ -1,6 +1,6 @@
 import
   tables, typetraits, options,
-  serialization/[object_serialization, errors],
+  serialization/[object_serialization],
   ./utils, ./types
 
 type

tests/test_config_file.nim

@@ -183,13 +183,13 @@ proc readValue(r: var WinregReader,
   type T = type value
   value = r.readValue(string).T
 
-proc readValue(r: var WinregReader, value: var ValidIpAddress) =
+proc readValue(r: var WinregReader, value: var ValidIpAddress) {.used.} =
   value = ValidIpAddress.init(r.readValue(string))
 
-proc readValue(r: var WinregReader, value: var Port) =
+proc readValue(r: var WinregReader, value: var Port) {.used.} =
   value = r.readValue(int).Port
 
-proc readValue(r: var WinregReader, value: var GraffitiBytes) =
+proc readValue(r: var WinregReader, value: var GraffitiBytes) {.used.} =
   value = hexToByteArray[value.len](r.readValue(string))
 
 proc testConfigFile() =

tests/test_parsecmdarg.nim

@@ -9,6 +9,9 @@ import
   std/[sequtils],
   unittest2,
   ../confutils
+  
+{.warning[UnusedImport]:off.}
+import stew/shims/stddefects
 
 func testValidValues[T](lo: T = low(T), hi: T = high(T)): bool =
   allIt(lo .. hi, T.parseCmdArg($it) == it)
@@ -24,7 +27,7 @@ func testInvalidValues[T](lo, hi: int64): bool =
       else:
         discard it != T.parseCmdArg($it).int64
         false
-    except RangeError:
+    except RangeDefect:
       true)
 
 const span = 300000

tests/test_qualified_ident.nim

@@ -15,7 +15,7 @@ type
       name: "la2" }: specialint.SInt
 
 func parseCmdArg(T: type specialint.SInt, p: string): T =
-  parseInt(string p).T
+  parseInt(p).T
 
 func completeCmdArg(T: type specialint.SInt, val: string): seq[string] =
   @[]