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[feature] detect unused imports

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This commit is contained in:
Araq 2019-07-17 22:36:23 +02:00
commit 4137a4dbf3
12 changed files with 62 additions and 33 deletions
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17
compiler/suggest.nim
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@ -528,7 +528,21 @@ proc userError(conf: ConfigRef; info: TLineInfo; s: PSym) =
return
localError(conf, info, "usage of '$1' is a user-defined error" % s.name.s)
proc markUsed(conf: ConfigRef; info: TLineInfo; s: PSym; usageSym: var PSym) =
proc markOwnerModuleAsUsed(c: PContext; s: PSym) =
var module = s
while module != nil and module.kind != skModule:
module = module.owner
if module != nil and module != c.module:
var i = 0
while i <= high(c.unusedImports):
if c.unusedImports[i][0] == module:
# mark it as used:
c.unusedImports.del(i)
else:
inc i
proc markUsed(c: PContext; info: TLineInfo; s: PSym; usageSym: var PSym) =
let conf = c.config
incl(s.flags, sfUsed)
if s.kind == skEnumField and s.owner != nil:
incl(s.owner.flags, sfUsed)
@ -541,6 +555,7 @@ proc markUsed(conf: ConfigRef; info: TLineInfo; s: PSym; usageSym: var PSym) =
suggestSym(conf, info, s, usageSym, false)
if {optStyleHint, optStyleError} * conf.globalOptions != {}:
styleCheckUse(conf, info, s)
markOwnerModuleAsUsed(c, s)
proc safeSemExpr*(c: PContext, n: PNode): PNode =
# use only for idetools support!