Documentation

Lean.Parser.Extension

Extensible parsing via attributes

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              inductive Lean.Parser.AliasValue (α : Type) :

              Parser aliases for making ParserDescr extensible

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                      def Lean.Parser.getConstAlias {α : Type} (mapRef : IO.Ref (Lean.Parser.AliasTable α)) (aliasName : Lake.Name) :
                      IO α
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                        def Lean.Parser.getUnaryAlias {α : Type} (mapRef : IO.Ref (Lean.Parser.AliasTable α)) (aliasName : Lake.Name) :
                        IO (αα)
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                          def Lean.Parser.getBinaryAlias {α : Type} (mapRef : IO.Ref (Lean.Parser.AliasTable α)) (aliasName : Lake.Name) :
                          IO (ααα)
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                            • declName : Lake.Name
                            • stackSz? : Option Nat

                              Number of syntax nodes produced by this parser. none means "sum of input sizes".

                            • autoGroupArgs : Bool

                              Whether arguments should be wrapped in group(·) if they do not produce exactly one syntax node.

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                                def Lean.Parser.registerAlias (aliasName : Lake.Name) (declName : Lake.Name) (p : Lean.Parser.ParserAliasValue) (kind? : optParam (Option Lean.SyntaxNodeKind) none) (info : optParam Lean.Parser.ParserAliasInfo { declName := Lean.Name.anonymous, stackSz? := some 1, autoGroupArgs := (some 1).isSome }) :
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                                    @[implemented_by Lean.Parser.mkParserOfConstantUnsafe]
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                                            @[implemented_by Lean.Parser.evalParserConstUnsafe]

                                            Run declName if possible and inside a quotation, or else p. The ParserInfo will always be taken from p.

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                                              def Lean.Parser.addBuiltinParser (catName : Lake.Name) (declName : Lake.Name) (leading : Bool) (p : Lean.Parser.Parser) (prio : Nat) :
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                                                            def Lean.Parser.mkInputContext (input : String) (fileName : String) (normalizeLineEndings : optParam Bool true) :
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                                                                def Lean.Parser.runParserCategory (env : Lean.Environment) (catName : Lake.Name) (input : String) (fileName : optParam String "<input>") :

                                                                convenience function for testing

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                                                                  def Lean.Parser.declareBuiltinParser (addFnName : Lake.Name) (catName : Lake.Name) (declName : Lake.Name) (prio : Nat) :
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                                                                          The parsing tables for builtin parsers are "stored" in the extracted source code.

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                                                                              A builtin parser attribute that can be extended by users.

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                                                                                    If the parsing stack is of the form #[.., openCommand], we process the open command, and execute p

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                                                                                      If the parsing stack is of the form #[.., openDecl], we process the open declaration, and execute p

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                                                                                        Helper environment extension that gives us access to built-in aliases in pure parser functions.

                                                                                        Result of resolving a parser name.

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                                                                                          Resolve the given parser name and return a list of candidates.

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                                                                                              Resolve the given parser name and return a list of candidates.

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                                                                                                Resolve the given parser name and return a list of candidates.

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