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5f5cf8dd03
`XDeclaredButNotUsed` for years in most cases - there's more but this is the low-hanging fruit
47 lines
1.7 KiB
Nim
47 lines
1.7 KiB
Nim
#
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#
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# The Nim Compiler
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# (c) Copyright 2013 Andreas Rumpf
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#
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# See the file "copying.txt", included in this
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# distribution, for details about the copyright.
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#
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# This module implements the searching for procs and iterators.
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# This is needed for proper handling of forward declarations.
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import
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ast, astalgo, msgs, semdata, types, lookups
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import std/strutils
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proc searchForProcAux(c: PContext, scope: PScope, fn: PSym): PSym =
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const flags = {ExactGenericParams, ExactTypeDescValues,
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ExactConstraints, IgnoreCC}
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var it: TIdentIter = default(TIdentIter)
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result = initIdentIter(it, scope.symbols, fn.name)
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while result != nil:
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if result.kind == fn.kind: #and sameType(result.typ, fn.typ, flags):
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case equalParams(result.typ.n, fn.typ.n)
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of paramsEqual:
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if (sfExported notin result.flags) and (sfExported in fn.flags):
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let message = ("public implementation '$1' has non-public " &
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"forward declaration at $2") %
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[getProcHeader(c.config, result, getDeclarationPath = false), c.config$result.info]
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localError(c.config, fn.info, message)
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return
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of paramsIncompatible:
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localError(c.config, fn.info, "overloaded '$1' leads to ambiguous calls" % fn.name.s)
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return
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of paramsNotEqual:
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discard
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result = nextIdentIter(it, scope.symbols)
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proc searchForProc*(c: PContext, scope: PScope, fn: PSym): tuple[proto: PSym, comesFromShadowScope: bool] =
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var scope = scope
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result = (searchForProcAux(c, scope, fn), false)
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while result.proto == nil and scope.isShadowScope:
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scope = scope.parent
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result.proto = searchForProcAux(c, scope, fn)
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result.comesFromShadowScope = true
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