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cleanup of in/out covariance handling

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This commit is contained in:
Andreas Rumpf 2017-05-17 20:54:53 +02:00
commit 7a95c961a7
6 changed files with 32 additions and 37 deletions
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12
compiler/ast.nim
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@ -212,8 +212,6 @@ type
nkIteratorTy, # iterator type
nkSharedTy, # 'shared T'
# we use 'nkPostFix' for the 'not nil' addition
nkInTy, # prefix `in` used to mark contravariant types
nkOutTy, # prefix `out` used to mark covariant types
nkEnumTy, # enum body
nkEnumFieldDef, # `ident = expr` in an enumeration
nkArgList, # argument list
@ -226,7 +224,7 @@ type
TNodeKinds* = set[TNodeKind]
type
TSymFlag* = enum # already 32 flags!
TSymFlag* = enum # already 33 flags!
sfUsed, # read access of sym (for warnings) or simply used
sfExported, # symbol is exported from module
sfFromGeneric, # symbol is instantiation of a generic; this is needed
@ -270,9 +268,6 @@ type
sfDiscardable, # returned value may be discarded implicitly
sfOverriden, # proc is overriden
sfGenSym # symbol is 'gensym'ed; do not add to symbol table
sfCovariant # covariant generic param mimicing a ptr type
sfWeakCovariant # covariant generic param mimicing a seq/array type
sfContravariant # contravariant generic param
TSymFlags* = set[TSymFlag]
@ -460,7 +455,7 @@ type
nfBlockArg # this a stmtlist appearing in a call (e.g. a do block)
TNodeFlags* = set[TNodeFlag]
TTypeFlag* = enum # keep below 32 for efficiency reasons (now: 30)
TTypeFlag* = enum # keep below 32 for efficiency reasons (now: beyond that)
tfVarargs, # procedure has C styled varargs
# tyArray type represeting a varargs list
tfNoSideEffect, # procedure type does not allow side effects
@ -513,6 +508,9 @@ type
tfTriggersCompileTime # uses the NimNode type which make the proc
# implicitly '.compiletime'
tfRefsAnonObj # used for 'ref object' and 'ptr object'
tfCovariant # covariant generic param mimicing a ptr type
tfWeakCovariant # covariant generic param mimicing a seq/array type
tfContravariant # contravariant generic param
TTypeFlags* = set[TTypeFlag]