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fix #8305 #7808 #10285 #11061 + other bugs with type mismatch error msgs

Browse Source 
(cherry picked from commit a6526695f0)
(cherry picked from commit b80d70b0f3)
(cherry picked from commit 6375df4c53)
(cherry picked from commit 5fce81edfd)
(cherry picked from commit 5ddea6a98f)
(cherry picked from commit 063ae96a66)
This commit is contained in:
narimiran
2019-08-04 16:59:44 +02:00
parent 47c965f85f
commit 035427186c
14 changed files with 392 additions and 123 deletions
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62
compiler/semcall.nim
View File

@@ -107,7 +107,6 @@ proc pickBestCandidate(c: PContext, headSymbol: PNode,
elif errorsEnabled or z.diagnosticsEnabled:
errors.add(CandidateError(
sym: sym,
unmatchedVarParam: int z.mutabilityProblem,
firstMismatch: z.firstMismatch,
diagnostics: z.diagnostics))
else:
@@ -173,14 +172,14 @@ proc presentFailedCandidates(c: PContext, n: PNode, errors: CandidateErrors):
var filterOnlyFirst = false
if optShowAllMismatches notin c.config.globalOptions:
for err in errors:
if err.firstMismatch > 1:
if err.firstMismatch.arg > 1:
filterOnlyFirst = true
break
var candidates = ""
var skipped = 0
for err in errors:
if filterOnlyFirst and err.firstMismatch == 1:
if filterOnlyFirst and err.firstMismatch.arg == 1:
inc skipped
continue
if err.sym.kind in routineKinds and err.sym.ast != nil:
@@ -189,34 +188,35 @@ proc presentFailedCandidates(c: PContext, n: PNode, errors: CandidateErrors):
else:
add(candidates, getProcHeader(c.config, err.sym, prefer))
add(candidates, "\n")
if err.firstMismatch != 0 and n.len > 1:
let cond = n.len > 2
if cond:
candidates.add(" first type mismatch at position: " & $abs(err.firstMismatch))
if err.firstMismatch >= 0: candidates.add("\n required type: ")
else: candidates.add("\n unknown named parameter: " & $n[-err.firstMismatch][0])
var wanted, got: PType = nil
if err.firstMismatch < 0:
discard
elif err.firstMismatch < err.sym.typ.len:
wanted = err.sym.typ.sons[err.firstMismatch]
if cond: candidates.add typeToString(wanted)
else:
if cond: candidates.add "none"
if err.firstMismatch > 0 and err.firstMismatch < n.len:
if cond:
candidates.add "\n but expression '"
candidates.add renderTree(n[err.firstMismatch])
let nArg = if err.firstMismatch.arg < n.len: n[err.firstMismatch.arg] else: nil
let nameParam = if err.firstMismatch.formal != nil: err.firstMismatch.formal.name.s else: ""
if n.len > 1:
candidates.add(" first type mismatch at position: " & $err.firstMismatch.arg)
# candidates.add "\n reason: " & $err.firstMismatch.kind # for debugging
case err.firstMismatch.kind
of kUnknownNamedParam: candidates.add("\n unknown named parameter: " & $nArg[0])
of kAlreadyGiven: candidates.add("\n named param already provided: " & $nArg[0])
of kExtraArg: candidates.add("\n extra argument given")
of kMissingParam: candidates.add("\n missing parameter: " & nameParam)
of kTypeMismatch, kVarNeeded:
doAssert nArg != nil
var wanted = err.firstMismatch.formal.typ
doAssert err.firstMismatch.formal != nil
candidates.add("\n required type for " & nameParam & ": ")
candidates.add typeToString(wanted)
candidates.add "\n but expression '"
if err.firstMismatch.kind == kVarNeeded:
candidates.add renderNotLValue(nArg)
candidates.add "' is immutable, not 'var'"
else:
candidates.add renderTree(nArg)
candidates.add "' is of type: "
got = n[err.firstMismatch].typ
if cond: candidates.add typeToString(got)
if wanted != nil and got != nil:
effectProblem(wanted, got, candidates)
if cond: candidates.add "\n"
if err.unmatchedVarParam != 0 and err.unmatchedVarParam < n.len:
candidates.add(" for a 'var' type a variable needs to be passed, but '" &
renderNotLValue(n[err.unmatchedVarParam]) &
"' is immutable\n")
var got = nArg.typ
candidates.add typeToString(got)
doAssert wanted != nil
if got != nil: effectProblem(wanted, got, candidates)
of kUnknown: internalAssert(c.config, false)
candidates.add "\n"
for diag in err.diagnostics:
candidates.add(diag & "\n")
if skipped > 0:
@@ -260,7 +260,7 @@ proc bracketNotFoundError(c: PContext; n: PNode) =
while symx != nil:
if symx.kind in routineKinds:
errors.add(CandidateError(sym: symx,
unmatchedVarParam: 0, firstMismatch: 0,
firstMismatch: MismatchInfo(),
diagnostics: @[],
enabled: false))
symx = nextOverloadIter(o, c, headSymbol)

57
compiler/sigmatch.nim
View File

@@ -19,12 +19,22 @@ when (defined(booting) or defined(nimsuggest)) and not defined(leanCompiler):
import docgen
type
MismatchKind* = enum
kUnknown, kAlreadyGiven, kUnknownNamedParam, kTypeMismatch, kVarNeeded,
kMissingParam, kExtraArg
MismatchInfo* = object
kind*: MismatchKind # reason for mismatch
arg*: int # position of provided arguments that mismatches
formal*: PSym # parameter that mismatches against provided argument
# its position can differ from `arg` because of varargs
TCandidateState* = enum
csEmpty, csMatch, csNoMatch
CandidateError* = object
sym*: PSym
unmatchedVarParam*, firstMismatch*: int
firstMismatch*: MismatchInfo
diagnostics*: seq[string]
enabled*: bool
@@ -56,7 +66,6 @@ type
# a distrinct type
typedescMatched*: bool
isNoCall*: bool # misused for generic type instantiations C[T]
mutabilityProblem*: uint8 # tyVar mismatch
inferredTypes: seq[PType] # inferred types during the current signature
# matching. they will be reset if the matching
# is not successful. may replace the bindings
@@ -70,8 +79,7 @@ type
# triggered with an idetools command in the
# future.
inheritancePenalty: int # to prefer closest father object type
firstMismatch*: int # position of the first type mismatch for
# better error messages
firstMismatch*: MismatchInfo # mismatch info for better error messages
diagnosticsEnabled*: bool
TTypeRelFlag* = enum
@@ -112,6 +120,7 @@ proc initCandidateAux(ctx: PContext,
c.intConvMatches = 0
c.genericMatches = 0
c.state = csEmpty
c.firstMismatch = MismatchInfo()
c.callee = callee
c.call = nil
c.baseTypeMatch = false
@@ -2278,6 +2287,17 @@ template isVarargsUntyped(x): untyped =
proc matchesAux(c: PContext, n, nOrig: PNode,
m: var TCandidate, marker: var IntSet) =
var
a = 1 # iterates over the actual given arguments
f = if m.callee.kind != tyGenericBody: 1
else: 0 # iterates over formal parameters
arg: PNode # current prepared argument
formal: PSym # current routine parameter
defer:
m.firstMismatch.arg = a
m.firstMismatch.formal = formal
template checkConstraint(n: untyped) {.dirty.} =
if not formal.constraint.isNil:
if matchNodeKinds(formal.constraint, n):
@@ -2292,28 +2312,21 @@ proc matchesAux(c: PContext, n, nOrig: PNode,
if argConverter.kind == nkHiddenCallConv:
if argConverter.typ.kind != tyVar:
m.state = csNoMatch
m.mutabilityProblem = uint8(f-1)
m.firstMismatch.kind = kVarNeeded
return
elif not n.isLValue:
m.state = csNoMatch
m.mutabilityProblem = uint8(f-1)
m.firstMismatch.kind = kVarNeeded
return
var
# iterates over formal parameters
f = if m.callee.kind != tyGenericBody: 1
else: 0
# iterates over the actual given arguments
a = 1
arg: PNode # current prepared argument
m.state = csMatch # until proven otherwise
m.firstMismatch = MismatchInfo()
m.call = newNodeI(n.kind, n.info)
m.call.typ = base(m.callee) # may be nil
var formalLen = m.callee.n.len
addSon(m.call, copyTree(n.sons[0]))
var container: PNode = nil # constructed container
var formal: PSym = if formalLen > 1: m.callee.n.sons[1].sym else: nil
formal = if formalLen > 1: m.callee.n.sons[1].sym else: nil
while a < n.len:
if a >= formalLen-1 and f < formalLen and m.callee.n[f].typ.isVarargsUntyped:
@@ -2334,20 +2347,20 @@ proc matchesAux(c: PContext, n, nOrig: PNode,
addSon(container, n.sons[a])
elif n.sons[a].kind == nkExprEqExpr:
# named param
m.firstMismatch.kind = kUnknownNamedParam
# check if m.callee has such a param:
prepareNamedParam(n.sons[a], c)
if n.sons[a].sons[0].kind != nkIdent:
localError(c.config, n.sons[a].info, "named parameter has to be an identifier")
m.state = csNoMatch
m.firstMismatch = -a
return
formal = getSymFromList(m.callee.n, n.sons[a].sons[0].ident, 1)
if formal == nil:
# no error message!
m.state = csNoMatch
m.firstMismatch = -a
return
if containsOrIncl(marker, formal.position):
m.firstMismatch.kind = kAlreadyGiven
# already in namedParams, so no match
# we used to produce 'errCannotBindXTwice' here but see
# bug #3836 of why that is not sound (other overload with
@@ -2361,9 +2374,9 @@ proc matchesAux(c: PContext, n, nOrig: PNode,
n.sons[a].typ = n.sons[a].sons[1].typ
arg = paramTypesMatch(m, formal.typ, n.sons[a].typ,
n.sons[a].sons[1], n.sons[a].sons[1])
m.firstMismatch.kind = kTypeMismatch
if arg == nil:
m.state = csNoMatch
m.firstMismatch = a
return
checkConstraint(n.sons[a].sons[1])
if m.baseTypeMatch:
@@ -2390,6 +2403,7 @@ proc matchesAux(c: PContext, n, nOrig: PNode,
else:
addSon(m.call, copyTree(n.sons[a]))
elif formal != nil and formal.typ.kind == tyVarargs:
m.firstMismatch.kind = kTypeMismatch
# beware of the side-effects in 'prepareOperand'! So only do it for
# varargs matching. See tests/metatype/tstatic_overloading.
m.baseTypeMatch = false
@@ -2406,6 +2420,7 @@ proc matchesAux(c: PContext, n, nOrig: PNode,
m.state = csNoMatch
return
else:
m.firstMismatch.kind = kExtraArg
m.state = csNoMatch
return
else:
@@ -2413,7 +2428,9 @@ proc matchesAux(c: PContext, n, nOrig: PNode,
internalError(c.config, n.sons[a].info, "matches")
return
formal = m.callee.n.sons[f].sym
m.firstMismatch.kind = kTypeMismatch
if containsOrIncl(marker, formal.position) and container.isNil:
m.firstMismatch.kind = kAlreadyGiven
# already in namedParams: (see above remark)
when false: localError(n.sons[a].info, errCannotBindXTwice, formal.name.s)
m.state = csNoMatch
@@ -2434,7 +2451,6 @@ proc matchesAux(c: PContext, n, nOrig: PNode,
n.sons[a], nOrig.sons[a])
if arg == nil:
m.state = csNoMatch
m.firstMismatch = f
return
if m.baseTypeMatch:
assert formal.typ.kind == tyVarargs
@@ -2508,7 +2524,8 @@ proc matches*(c: PContext, n, nOrig: PNode, m: var TCandidate) =
else:
# no default value
m.state = csNoMatch
m.firstMismatch = f
m.firstMismatch.kind = kMissingParam
m.firstMismatch.formal = formal
break
else:
if formal.ast.kind == nkEmpty:

42
tests/concepts/t3330.nim
View File

@@ -1,49 +1,63 @@
discard """
errormsg: "type mismatch: got <Bar[system.int]>"
disabled: "true"
disabled: "32bit"
nimout: '''
t3330.nim(63, 4) Error: type mismatch: got <Bar[system.int]>
t3330.nim(78, 4) Error: type mismatch: got <Bar[system.int]>
but expected one of:
proc test(foo: Foo[int])
t3330.nim(48, 8) Hint: Non-matching candidates for add(k, string, T)
first type mismatch at position: 1
required type for foo: Foo[int]
but expression 'bar' is of type: Bar[system.int]
t3330.nim(63, 8) Hint: Non-matching candidates for add(k, string, T)
proc add[T](x: var seq[T]; y: openArray[T])
first type mismatch at position: 1
required type: var seq[T]
required type for x: var seq[T]
but expression 'k' is of type: Alias
proc add(result: var string; x: float)
first type mismatch at position: 1
required type: var string
required type for result: var string
but expression 'k' is of type: Alias
proc add(x: var string; y: string)
first type mismatch at position: 1
required type: var string
required type for x: var string
but expression 'k' is of type: Alias
proc add(x: var string; y: cstring)
first type mismatch at position: 1
required type: var string
required type for x: var string
but expression 'k' is of type: Alias
proc add[T](x: var seq[T]; y: T)
first type mismatch at position: 1
required type: var seq[T]
required type for x: var seq[T]
but expression 'k' is of type: Alias
proc add(result: var string; x: int64)
first type mismatch at position: 1
required type: var string
required type for result: var string
but expression 'k' is of type: Alias
proc add(x: var string; y: char)
first type mismatch at position: 1
required type: var string
required type for x: var string
but expression 'k' is of type: Alias
t3330.nim(48, 8) template/generic instantiation of `add` from here
t3330.nim(55, 6) Foo: 'bar.value' cannot be assigned to
t3330.nim(48, 8) template/generic instantiation of `add` from here
t3330.nim(56, 6) Foo: 'bar.x' cannot be assigned to
t3330.nim(63, 8) template/generic instantiation of `add` from here
t3330.nim(70, 6) Foo: 'bar.value' cannot be assigned to
t3330.nim(63, 8) template/generic instantiation of `add` from here
t3330.nim(71, 6) Foo: 'bar.x' cannot be assigned to
expression: test(bar)'''
"""
# Note: currently disabled on 32bit because the candidates are presented in
# different order on travis with `NIM_COMPILE_TO_CPP=false CPU=i386`;
# a possible fix would be to sort the candidates by proc signature or
# declaration location
## line 60
type
Foo[T] = concept k
add(k, string, T)

118
tests/concepts/texplain.nim
View File

@@ -1,70 +1,105 @@
discard """
cmd: "nim c --verbosity:0 --colors:off $file"
nimout: '''
Hint: texplain [Processing]
texplain.nim(118, 10) Hint: Non-matching candidates for e(y)
Hint: system [Processing]
Hint: widestrs [Processing]
Hint: io [Processing]
texplain.nim(158, 10) Hint: Non-matching candidates for e(y)
proc e(i: int): int
first type mismatch at position: 1
required type for i: int
but expression 'y' is of type: MatchingType
texplain.nim(121, 7) Hint: Non-matching candidates for e(10)
texplain.nim(161, 7) Hint: Non-matching candidates for e(10)
proc e(o: ExplainedConcept): int
texplain.nim(84, 6) ExplainedConcept: undeclared field: 'foo'
texplain.nim(84, 6) ExplainedConcept: undeclared field: '.'
texplain.nim(84, 6) ExplainedConcept: expression '.' cannot be called
texplain.nim(84, 5) ExplainedConcept: concept predicate failed
texplain.nim(85, 6) ExplainedConcept: undeclared field: 'bar'
texplain.nim(85, 6) ExplainedConcept: undeclared field: '.'
texplain.nim(85, 6) ExplainedConcept: expression '.' cannot be called
texplain.nim(84, 5) ExplainedConcept: concept predicate failed
first type mismatch at position: 1
required type for o: ExplainedConcept
but expression '10' is of type: int literal(10)
texplain.nim(124, 6) ExplainedConcept: undeclared field: 'foo'
texplain.nim(124, 6) ExplainedConcept: undeclared field: '.'
texplain.nim(124, 6) ExplainedConcept: expression '.' cannot be called
texplain.nim(124, 5) ExplainedConcept: concept predicate failed
texplain.nim(125, 6) ExplainedConcept: undeclared field: 'bar'
texplain.nim(125, 6) ExplainedConcept: undeclared field: '.'
texplain.nim(125, 6) ExplainedConcept: expression '.' cannot be called
texplain.nim(124, 5) ExplainedConcept: concept predicate failed
texplain.nim(124, 10) Hint: Non-matching candidates for e(10)
texplain.nim(164, 10) Hint: Non-matching candidates for e(10)
proc e(o: ExplainedConcept): int
texplain.nim(84, 6) ExplainedConcept: undeclared field: 'foo'
texplain.nim(84, 6) ExplainedConcept: undeclared field: '.'
texplain.nim(84, 6) ExplainedConcept: expression '.' cannot be called
texplain.nim(84, 5) ExplainedConcept: concept predicate failed
texplain.nim(85, 6) ExplainedConcept: undeclared field: 'bar'
texplain.nim(85, 6) ExplainedConcept: undeclared field: '.'
texplain.nim(85, 6) ExplainedConcept: expression '.' cannot be called
texplain.nim(84, 5) ExplainedConcept: concept predicate failed
first type mismatch at position: 1
required type for o: ExplainedConcept
but expression '10' is of type: int literal(10)
texplain.nim(124, 6) ExplainedConcept: undeclared field: 'foo'
texplain.nim(124, 6) ExplainedConcept: undeclared field: '.'
texplain.nim(124, 6) ExplainedConcept: expression '.' cannot be called
texplain.nim(124, 5) ExplainedConcept: concept predicate failed
texplain.nim(125, 6) ExplainedConcept: undeclared field: 'bar'
texplain.nim(125, 6) ExplainedConcept: undeclared field: '.'
texplain.nim(125, 6) ExplainedConcept: expression '.' cannot be called
texplain.nim(124, 5) ExplainedConcept: concept predicate failed
texplain.nim(128, 20) Error: type mismatch: got <NonMatchingType>
texplain.nim(168, 20) Error: type mismatch: got <NonMatchingType>
but expected one of:
proc e(o: ExplainedConcept): int
texplain.nim(128, 9) template/generic instantiation of `assert` from here
texplain.nim(84, 5) ExplainedConcept: concept predicate failed
first type mismatch at position: 1
required type for o: ExplainedConcept
but expression 'n' is of type: NonMatchingType
texplain.nim(168, 9) template/generic instantiation of `assert` from here
texplain.nim(124, 5) ExplainedConcept: concept predicate failed
proc e(i: int): int
first type mismatch at position: 1
required type for i: int
but expression 'n' is of type: NonMatchingType
expression: e(n)
texplain.nim(129, 20) Error: type mismatch: got <NonMatchingType>
texplain.nim(169, 20) Error: type mismatch: got <NonMatchingType>
but expected one of:
proc r(o: RegularConcept): int
texplain.nim(129, 9) template/generic instantiation of `assert` from here
texplain.nim(88, 5) RegularConcept: concept predicate failed
first type mismatch at position: 1
required type for o: RegularConcept
but expression 'n' is of type: NonMatchingType
texplain.nim(169, 9) template/generic instantiation of `assert` from here
texplain.nim(128, 5) RegularConcept: concept predicate failed
proc r[T](a: SomeNumber; b: T; c: auto)
first type mismatch at position: 1
required type for a: SomeNumber
but expression 'n' is of type: NonMatchingType
proc r(i: string): int
first type mismatch at position: 1
required type for i: string
but expression 'n' is of type: NonMatchingType
expression: r(n)
texplain.nim(130, 20) Hint: Non-matching candidates for r(y)
texplain.nim(170, 20) Hint: Non-matching candidates for r(y)
proc r[T](a: SomeNumber; b: T; c: auto)
first type mismatch at position: 1
required type for a: SomeNumber
but expression 'y' is of type: MatchingType
proc r(i: string): int
first type mismatch at position: 1
required type for i: string
but expression 'y' is of type: MatchingType
texplain.nim(138, 2) Error: type mismatch: got <MatchingType>
texplain.nim(178, 2) Error: type mismatch: got <MatchingType>
but expected one of:
proc f(o: NestedConcept)
texplain.nim(88, 6) RegularConcept: undeclared field: 'foo'
texplain.nim(88, 6) RegularConcept: undeclared field: '.'
texplain.nim(88, 6) RegularConcept: expression '.' cannot be called
texplain.nim(88, 5) RegularConcept: concept predicate failed
texplain.nim(89, 6) RegularConcept: undeclared field: 'bar'
texplain.nim(89, 6) RegularConcept: undeclared field: '.'
texplain.nim(89, 6) RegularConcept: expression '.' cannot be called
texplain.nim(88, 5) RegularConcept: concept predicate failed
texplain.nim(92, 5) NestedConcept: concept predicate failed
first type mismatch at position: 1
required type for o: NestedConcept
but expression 'y' is of type: MatchingType
texplain.nim(128, 6) RegularConcept: undeclared field: 'foo'
texplain.nim(128, 6) RegularConcept: undeclared field: '.'
texplain.nim(128, 6) RegularConcept: expression '.' cannot be called
texplain.nim(128, 5) RegularConcept: concept predicate failed
texplain.nim(129, 6) RegularConcept: undeclared field: 'bar'
texplain.nim(129, 6) RegularConcept: undeclared field: '.'
texplain.nim(129, 6) RegularConcept: expression '.' cannot be called
texplain.nim(128, 5) RegularConcept: concept predicate failed
texplain.nim(132, 5) NestedConcept: concept predicate failed
expression: f(y)
'''
errormsg: "type mismatch: got <MatchingType>"
line: 138
line: 178
disabled: 32bit
"""
@@ -77,7 +112,12 @@ expression: f(y)
# line 80 HERE
# line 120 HERE
type
ExplainedConcept {.explain.} = concept o

28
tests/destructor/tdont_return_unowned_from_owned.nim
View File

@@ -1,21 +1,33 @@
discard """
cmd: "nim check --newruntime --hints:off $file"
nimout: '''tdont_return_unowned_from_owned.nim(24, 10) Error: cannot return an owned pointer as an unowned pointer; use 'owned(Obj)' as the return type
tdont_return_unowned_from_owned.nim(27, 10) Error: cannot return an owned pointer as an unowned pointer; use 'owned(Obj)' as the return type
tdont_return_unowned_from_owned.nim(30, 6) Error: type mismatch: got <Obj>
nimout: '''tdont_return_unowned_from_owned.nim(36, 10) Error: cannot return an owned pointer as an unowned pointer; use 'owned(Obj)' as the return type
tdont_return_unowned_from_owned.nim(39, 10) Error: cannot return an owned pointer as an unowned pointer; use 'owned(Obj)' as the return type
tdont_return_unowned_from_owned.nim(42, 6) Error: type mismatch: got <Obj>
but expected one of:
proc new[T](a: var ref T; finalizer: proc (x: ref T) {.nimcall.})
first type mismatch at position: 2
missing parameter: finalizer
2 other mismatching symbols have been suppressed; compile with --showAllMismatches:on to see them
expression: new(result)
tdont_return_unowned_from_owned.nim(30, 6) Error: illformed AST:
tdont_return_unowned_from_owned.nim(38, 13) Error: assignment produces a dangling ref: the unowned ref lives longer than the owned ref
tdont_return_unowned_from_owned.nim(39, 13) Error: assignment produces a dangling ref: the unowned ref lives longer than the owned ref
tdont_return_unowned_from_owned.nim(43, 10) Error: cannot return an owned pointer as an unowned pointer; use 'owned(RootRef)' as the return type
tdont_return_unowned_from_owned.nim(42, 6) Error: illformed AST:
tdont_return_unowned_from_owned.nim(50, 13) Error: assignment produces a dangling ref: the unowned ref lives longer than the owned ref
tdont_return_unowned_from_owned.nim(51, 13) Error: assignment produces a dangling ref: the unowned ref lives longer than the owned ref
tdont_return_unowned_from_owned.nim(55, 10) Error: cannot return an owned pointer as an unowned pointer; use 'owned(RootRef)' as the return type
'''
errormsg: "cannot return an owned pointer as an unowned pointer; use 'owned(RootRef)' as the return type"
line: 43
line: 55
"""
## line 30
# bug #11073
type
Obj = ref object

2
tests/errmsgs/t8434.nim
View File

@@ -4,7 +4,7 @@ discard """
proc fun0[T1: int | float |
object | array | seq](a1: T1; a2: int)
first type mismatch at position: 1
required type: T1: int or float or object or array or seq[T]
required type for a1: T1: int or float or object or array or seq[T]
but expression 'byte(1)' is of type: byte
expression: fun0(byte(1), 0)

2
tests/errmsgs/tdetailed_position.nim
View File

@@ -6,7 +6,7 @@ nimout: '''
but expected one of:
proc main(a, b, c: string)
first type mismatch at position: 1
required type: string
required type for a: string
but expression '1' is of type: int literal(1)
expression: main(1, 2, 3)

2
tests/errmsgs/tgcsafety.nim
View File

@@ -8,7 +8,7 @@ proc serve(server: AsyncHttpServer; port: Port;
callback: proc (request: Request): Future[void] {.closure, gcsafe.};
address = ""): owned(Future[void])
first type mismatch at position: 3
required type: proc (request: Request): Future[system.void]{.closure, gcsafe.}
required type for callback: proc (request: Request): Future[system.void]{.closure, gcsafe.}
but expression 'cb' is of type: proc (req: Request): Future[system.void]{.locks: <unknown>.}
This expression is not GC-safe. Annotate the proc with {.gcsafe.} to get extended error information.

172
tests/errmsgs/tsigmatch.nim Normal file
View File

@@ -0,0 +1,172 @@
discard """
cmd: "nim check --showAllMismatches:on --hints:off $file"
nimout: '''
tsigmatch.nim(111, 4) Error: type mismatch: got <A, string>
but expected one of:
proc f(b: B)
first type mismatch at position: 1
required type for b: B
but expression 'A()' is of type: A
proc f(a: A)
first type mismatch at position: 2
extra argument given
expression: f(A(), "extra")
tsigmatch.nim(125, 6) Error: type mismatch: got <tuple of (string, proc (){.gcsafe, locks: 0.})>
but expected one of:
proc foo(x: (string, proc ()))
first type mismatch at position: 1
required type for x: tuple of (string, proc (){.closure.})
but expression '("foobar", proc () = echo(["Hello!"]))' is of type: tuple of (string, proc (){.gcsafe, locks: 0.})
expression: foo(("foobar", proc () = echo(["Hello!"])))
tsigmatch.nim(132, 11) Error: type mismatch: got <proc (s: string): string{.noSideEffect, gcsafe, locks: 0.}>
but expected one of:
proc foo[T, S](op: proc (x: T): S {.cdecl.}): auto
first type mismatch at position: 1
required type for op: proc (x: T): S{.cdecl.}
but expression 'fun' is of type: proc (s: string): string{.noSideEffect, gcsafe, locks: 0.}
proc foo[T, S](op: proc (x: T): S {.safecall.}): auto
first type mismatch at position: 1
required type for op: proc (x: T): S{.safecall.}
but expression 'fun' is of type: proc (s: string): string{.noSideEffect, gcsafe, locks: 0.}
expression: foo(fun)
tsigmatch.nim(143, 13) Error: type mismatch: got <array[0..0, proc (x: int){.gcsafe, locks: 0.}]>
but expected one of:
proc takesFuncs(fs: openArray[proc (x: int) {.gcsafe, locks: 0.}])
first type mismatch at position: 1
required type for fs: openarray[proc (x: int){.closure, gcsafe, locks: 0.}]
but expression '[proc (x: int) {.gcsafe, locks: 0.} = echo [x]]' is of type: array[0..0, proc (x: int){.gcsafe, locks: 0.}]
expression: takesFuncs([proc (x: int) {.gcsafe, locks: 0.} = echo [x]])
tsigmatch.nim(149, 4) Error: type mismatch: got <int literal(10), a0: int literal(5), string>
but expected one of:
proc f(a0: uint8; b: string)
first type mismatch at position: 2
named param already provided: a0
expression: f(10, a0 = 5, "")
tsigmatch.nim(156, 4) Error: type mismatch: got <string, string, string, string, string, float64, string>
but expected one of:
proc f(a1: int)
first type mismatch at position: 1
required type for a1: int
but expression '"asdf"' is of type: string
proc f(a1: string; a2: varargs[string]; a3: float; a4: var string)
first type mismatch at position: 7
required type for a4: var string
but expression '"bad"' is immutable, not 'var'
expression: f("asdf", "1", "2", "3", "4", 2.3, "bad")
tsigmatch.nim(164, 4) Error: type mismatch: got <string, a0: int literal(12)>
but expected one of:
proc f(x: string; a0: var int)
first type mismatch at position: 2
required type for a0: var int
but expression 'a0 = 12' is immutable, not 'var'
proc f(x: string; a0: string)
first type mismatch at position: 2
required type for a0: string
but expression 'a0 = 12' is of type: int literal(12)
expression: f(foo, a0 = 12)
tsigmatch.nim(171, 7) Error: type mismatch: got <Mystring, string>
but expected one of:
proc fun1(a1: MyInt; a2: Mystring)
first type mismatch at position: 1
required type for a1: MyInt
but expression 'default(Mystring)' is of type: Mystring
proc fun1(a1: float; a2: Mystring)
first type mismatch at position: 1
required type for a1: float
but expression 'default(Mystring)' is of type: Mystring
expression: fun1(default(Mystring), "asdf")
'''
errormsg: "type mismatch"
"""
## line 100
block:
# bug #11061 Type mismatch error "first type mismatch at" points to wrong argument/position
# Note: the error msg now gives correct position for mismatched argument
type
A = object of RootObj
B = object of A
proc f(b: B) = discard
proc f(a: A) = discard
f(A(), "extra")
#[
this one is similar but error msg was even more misleading, since the user
would think float != float64 where in fact the issue is another param:
first type mismatch at position: 1; required type: float; but expression 'x = 1.2' is of type: float64
proc f(x: string, a0 = 0, a1 = 0, a2 = 0) = discard
proc f(x: float, a0 = 0, a1 = 0, a2 = 0) = discard
f(x = float(1.2), a0 = 0, a0 = 0)
]#
block:
# bug #7808 Passing tuple with proc leads to confusing errors
# Note: the error message now shows `closure` which helps debugging the issue
proc foo(x: (string, proc ())) = x[1]()
foo(("foobar", proc () = echo("Hello!")))
block:
# bug #8305 type mismatch error drops crucial pragma info when there's only 1 argument
proc fun(s: string): string {. .} = discard
proc foo[T, S](op: proc (x: T): S {. cdecl .}): auto = 1
proc foo[T, S](op: proc (x: T): S {. safecall .}): auto = 1
echo foo(fun)
block:
# bug #10285 Function signature don't match when inside seq/array/openarray
# Note: the error message now shows `closure` which helps debugging the issue
# out why it doesn't match
proc takesFunc(f: proc (x: int) {.gcsafe, locks: 0.}) =
echo "takes single Func"
proc takesFuncs(fs: openarray[proc (x: int) {.gcsafe, locks: 0.}]) =
echo "takes multiple Func"
takesFunc(proc (x: int) {.gcsafe, locks: 0.} = echo x) # works
takesFuncs([proc (x: int) {.gcsafe, locks: 0.} = echo x]) # fails
block:
# bug https://github.com/nim-lang/Nim/issues/11061#issuecomment-508970465
# better fix for removal of `errCannotBindXTwice` due to #3836
proc f(a0: uint8, b: string) = discard
f(10, a0 = 5, "")
block:
# bug: https://github.com/nim-lang/Nim/issues/11061#issuecomment-508969796
# sigmatch gets confused with param/arg position after varargs
proc f(a1: int) = discard
proc f(a1: string, a2: varargs[string], a3: float, a4: var string) = discard
f("asdf", "1", "2", "3", "4", 2.3, "bad")
block:
# bug: https://github.com/nim-lang/Nim/issues/11061#issuecomment-508970046
# err msg incorrectly said something is immutable
proc f(x: string, a0: var int) = discard
proc f(x: string, a0: string) = discard
var foo = ""
f(foo, a0 = 12)
block:
type Mystring = string
type MyInt = int
proc fun1(a1: MyInt, a2: Mystring) = discard
proc fun1(a1: float, a2: Mystring) = discard
fun1(Mystring.default, "asdf")

4
tests/errmsgs/tunknown_named_parameter.nim
View File

@@ -4,14 +4,14 @@ errormsg: "type mismatch: got <string, set[char], maxsplits: int literal(1)>"
nimout: '''
proc rsplit(s: string; sep: char; maxsplit: int = -1): seq[string]
first type mismatch at position: 2
required type: char
required type for sep: char
but expression '{':'}' is of type: set[char]
proc rsplit(s: string; seps: set[char] = Whitespace; maxsplit: int = -1): seq[string]
first type mismatch at position: 3
unknown named parameter: maxsplits
proc rsplit(s: string; sep: string; maxsplit: int = -1): seq[string]
first type mismatch at position: 2
required type: string
required type for sep: string
but expression '{':'}' is of type: set[char]
expression: rsplit("abc:def", {':'}, maxsplits = 1)

10
tests/errmsgs/twrong_at_operator.nim
View File

@@ -1,11 +1,17 @@
discard """
errormsg: "type mismatch: got <array[0..0, type int]>"
line: 16
line: 22
nimout: '''
twrong_at_operator.nim(16, 30) Error: type mismatch: got <array[0..0, type int]>
twrong_at_operator.nim(22, 30) Error: type mismatch: got <array[0..0, type int]>
but expected one of:
proc `@`[T](a: openArray[T]): seq[T]
first type mismatch at position: 1
required type for a: openarray[T]
but expression '[int]' is of type: array[0..0, type int]
proc `@`[IDX, T](a: array[IDX, T]): seq[T]
first type mismatch at position: 1
required type for a: array[IDX, T]
but expression '[int]' is of type: array[0..0, type int]
expression: @[int]
'''

5
tests/typerel/t7600_1.nim
View File

@@ -1,8 +1,11 @@
discard """
errormsg: "type mismatch: got <Thin[system.int]>"
nimout: '''t7600_1.nim(18, 6) Error: type mismatch: got <Thin[system.int]>
nimout: '''t7600_1.nim(21, 6) Error: type mismatch: got <Thin[system.int]>
but expected one of:
proc test[T](x: Paper[T])
first type mismatch at position: 1
required type for x: Paper[test.T]
but expression 'tn' is of type: Thin[system.int]
expression: test tn'''
"""

5
tests/typerel/t7600_2.nim
View File

@@ -1,8 +1,11 @@
discard """
errormsg: "type mismatch: got <Thin>"
nimout: '''t7600_2.nim(17, 6) Error: type mismatch: got <Thin>
nimout: '''t7600_2.nim(20, 6) Error: type mismatch: got <Thin>
but expected one of:
proc test(x: Paper)
first type mismatch at position: 1
required type for x: Paper
but expression 'tn' is of type: Thin
expression: test tn'''
"""

6
tests/varres/tprevent_forloopvar_mutations.nim
View File

@@ -1,10 +1,12 @@
discard """
errmsg: "type mismatch: got <int>"
line: 15
line: 17
nimout: '''type mismatch: got <int>
but expected one of:
proc inc[T: Ordinal | uint | uint64](x: var T; y = 1)
for a 'var' type a variable needs to be passed, but 'i' is immutable
first type mismatch at position: 1
required type for x: var T: Ordinal or uint or uint64
but expression 'i' is immutable, not 'var'
expression: inc i
'''