| author | nipkow | 
| Sat, 20 Jun 2009 13:34:54 +0200 | |
| changeset 31730 | d74830dc3e4a | 
| parent 31723 | f5cafe803b55 | 
| child 32743 | c4e9a48bc50e | 
| permissions | -rw-r--r-- | 
| 4870 
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Extensible records with structural subtyping in HOL.  See
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changeset | 1 | (* Title: HOL/Record.thy | 
| 16114 | 2 | Author: Wolfgang Naraschewski, Norbert Schirmer and Markus Wenzel, TU Muenchen | 
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changeset | 3 | *) | 
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changeset | 4 | |
| 22817 | 5 | header {* Extensible records with structural subtyping *}
 | 
| 6 | ||
| 15131 | 7 | theory Record | 
| 15140 | 8 | imports Product_Type | 
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changeset | 9 | uses ("Tools/record.ML")
 | 
| 15131 | 10 | begin | 
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changeset | 11 | |
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changeset | 12 | lemma prop_subst: "s = t \<Longrightarrow> PROP P t \<Longrightarrow> PROP P s" | 
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changeset | 13 | by simp | 
| 11826 | 14 | |
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changeset | 15 | lemma rec_UNIV_I: "\<And>x. x\<in>UNIV \<equiv> True" | 
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changeset | 16 | by simp | 
| 11826 | 17 | |
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changeset | 18 | lemma rec_True_simp: "(True \<Longrightarrow> PROP P) \<equiv> PROP P" | 
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changeset | 19 | by simp | 
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changeset | 20 | |
| 25705 | 21 | lemma K_record_comp: "(\<lambda>x. c) \<circ> f = (\<lambda>x. c)" | 
| 22 | by (simp add: comp_def) | |
| 11821 | 23 | |
| 22817 | 24 | |
| 11833 | 25 | subsection {* Concrete record syntax *}
 | 
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changeset | 26 | |
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changeset | 27 | nonterminals | 
| 5198 | 28 | ident field_type field_types field fields update updates | 
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changeset | 29 | syntax | 
| 11821 | 30 |   "_constify"           :: "id => ident"                        ("_")
 | 
| 31 |   "_constify"           :: "longid => ident"                    ("_")
 | |
| 5198 | 32 | |
| 11821 | 33 |   "_field_type"         :: "[ident, type] => field_type"        ("(2_ ::/ _)")
 | 
| 34 |   ""                    :: "field_type => field_types"          ("_")
 | |
| 35 |   "_field_types"        :: "[field_type, field_types] => field_types"    ("_,/ _")
 | |
| 36 |   "_record_type"        :: "field_types => type"                ("(3'(| _ |'))")
 | |
| 10093 | 37 |   "_record_type_scheme" :: "[field_types, type] => type"        ("(3'(| _,/ (2... ::/ _) |'))")
 | 
| 5198 | 38 | |
| 11821 | 39 |   "_field"              :: "[ident, 'a] => field"               ("(2_ =/ _)")
 | 
| 40 |   ""                    :: "field => fields"                    ("_")
 | |
| 41 |   "_fields"             :: "[field, fields] => fields"          ("_,/ _")
 | |
| 42 |   "_record"             :: "fields => 'a"                       ("(3'(| _ |'))")
 | |
| 10093 | 43 |   "_record_scheme"      :: "[fields, 'a] => 'a"                 ("(3'(| _,/ (2... =/ _) |'))")
 | 
| 5198 | 44 | |
| 10641 | 45 | "_update_name" :: idt | 
| 11821 | 46 |   "_update"             :: "[ident, 'a] => update"              ("(2_ :=/ _)")
 | 
| 47 |   ""                    :: "update => updates"                  ("_")
 | |
| 48 |   "_updates"            :: "[update, updates] => updates"       ("_,/ _")
 | |
| 10093 | 49 |   "_record_update"      :: "['a, updates] => 'b"                ("_/(3'(| _ |'))" [900,0] 900)
 | 
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changeset | 50 | |
| 10331 | 51 | syntax (xsymbols) | 
| 11821 | 52 |   "_record_type"        :: "field_types => type"                ("(3\<lparr>_\<rparr>)")
 | 
| 10093 | 53 |   "_record_type_scheme" :: "[field_types, type] => type"        ("(3\<lparr>_,/ (2\<dots> ::/ _)\<rparr>)")
 | 
| 54 |   "_record"             :: "fields => 'a"                               ("(3\<lparr>_\<rparr>)")
 | |
| 55 |   "_record_scheme"      :: "[fields, 'a] => 'a"                 ("(3\<lparr>_,/ (2\<dots> =/ _)\<rparr>)")
 | |
| 56 |   "_record_update"      :: "['a, updates] => 'b"                ("_/(3\<lparr>_\<rparr>)" [900,0] 900)
 | |
| 9729 | 57 | |
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changeset | 58 | use "Tools/record.ML" | 
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changeset | 59 | setup Record.setup | 
| 10641 | 60 | |
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changeset | 61 | end |