package coq-core
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doc/coq-core.pretyping/Locus/index.html
Module Locus
Locus : positions in hypotheses and goals
Occurrences
type occurrences_expr = int or_var occurrences_gentype 'a with_occurrences = occurrences_expr * 'atype occurrences = int occurrences_genLocations
Selecting the occurrences in body (if any), in type, or in both
Abstract clauses expressions
A clause_expr (and its instance clause) denotes occurrences and hypotheses in a goal in an abstract way; in particular, it can refer to the set of all hypotheses independently of the effective contents of the current goal
Concerning the field onhyps:
Nonemeans *on every hypothesis*Some lmeans on hypothesis belonging to l
type 'a hyp_location_expr = 'a with_occurrences * hyp_location_flagtype clause = Names.Id.t clause_exprConcrete view of occurrence clauses
clause_atom refers either to an hypothesis location (i.e. an hypothesis with occurrences and a position, in body if any, in type or in both) or to some occurrences of the conclusion
type clause_atom = | OnHyp of Names.Id.t * occurrences_expr * hyp_location_flag| OnConcl of occurrences_expr
A concrete_clause is an effective collection of occurrences in the hypotheses and the conclusion
type concrete_clause = clause_atom listA weaker form of clause with no mention of occurrences
A hyp_location is an hypothesis together with a location
type hyp_location = Names.Id.t * hyp_location_flagA goal_location is either an hypothesis (together with a location) or the conclusion (represented by None)
type goal_location = hyp_location optionSimple clauses, without occurrences nor location
A simple_clause is a set of hypotheses, possibly extended with the conclusion (conclusion is represented by None)
type simple_clause = Names.Id.t option list