Convert the given goal Ctx |- target
into Ctx |- type -> target
.
It assumes val
has type type
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Add the hypothesis h : t
, given v : t
, and return the new FVarId
.
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Convert the given goal Ctx |- target
into Ctx |- let name : type := val; target
.
It assumes val
has type type
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Convert the given goal Ctx |- target
into Ctx |- (hName : type) -> hName = val -> target
.
It assumes val
has type type
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- fvarId : Lean.FVarId
- mvarId : Lean.MVarId
- subst : Lean.Meta.FVarSubst
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Convert the given goal Ctx |- target
into a goal containing (userName : type)
after the local declaration with if fvarId
.
It assumes val
has type type
, and that type
is well-formed after fvarId
.
Note that val
does not need to be well-formed after fvarId
. That is, it may contain variables that are defined after fvarId
.
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- userName : Lean.Name
- type : Lean.Expr
- value : Lean.Expr
- binderInfo : Lean.BinderInfo
The hypothesis'
BinderInfo
- kind : Lean.LocalDeclKind
The hypothesis'
LocalDeclKind
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Convert the given goal Ctx |- target
into Ctx, (hs[0].userName : hs[0].type) ... |-target
.
It assumes hs[i].val
has type hs[i].type
.
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Replace hypothesis hyp
in goal g
with proof : typeNew
.
The new hypothesis is given the same user name as the original,
it attempts to avoid reordering hypotheses, and the original is cleared if possible.
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Finds the LocalDecl
for the FVar in e
with the highest index.