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improve the error messages regarding type mismatches in overloading resolution

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This commit is contained in:
Andreas Rumpf 2018-02-04 07:04:50 +01:00
commit 326b7dc556
4 changed files with 74 additions and 11 deletions
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37
tests/concepts/t3330.nim
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@ -1,25 +1,48 @@
discard """
errormsg: "type mismatch: got (Bar[system.int])"
nimout: '''
t3330.nim(40, 4) Error: type mismatch: got (Bar[system.int])
t3330.nim(63, 4) Error: type mismatch: got (Bar[system.int])
but expected one of:
proc test(foo: Foo[int])
t3330.nim(25, 8) Hint: Non-matching candidates for add(k, string, T)
t3330.nim(48, 8) Hint: Non-matching candidates for add(k, string, T)
proc add(x: var string; y: string)
first type mismatch at position: 1
required type: 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
but expression 'k' is of type: Alias
proc add(result: var string; x: int64)
first type mismatch at position: 1
required type: var string
but expression 'k' is of type: Alias
proc add(result: var string; x: float)
first type mismatch at position: 1
required type: 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
but expression 'k' is of type: Alias
proc add[T](x: var seq[T]; y: openArray[T])
first type mismatch at position: 1
required type: var seq[T]
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]
but expression 'k' is of type: Alias
t3330.nim(25, 8) template/generic instantiation from here
t3330.nim(32, 6) Foo: 'bar.value' cannot be assigned to
t3330.nim(25, 8) template/generic instantiation from here
t3330.nim(33, 6) Foo: 'bar.x' cannot be assigned to
'''
t3330.nim(48, 8) template/generic instantiation from here
t3330.nim(55, 6) Foo: 'bar.value' cannot be assigned to
t3330.nim(48, 8) template/generic instantiation from here
t3330.nim(56, 6) Foo: 'bar.x' cannot be assigned to
expression: test(bar)'''
"""
type
Foo[T] = concept k
add(k, string, T)