diff options
| author | Thomas Bauereiss | 2018-02-26 13:22:11 +0000 |
|---|---|---|
| committer | Thomas Bauereiss | 2018-02-26 13:31:34 +0000 |
| commit | ee123e2876c4fa5ae000256caeb7eb810e8c05f8 (patch) | |
| tree | b00951146619539131ef511db727e19d685b8286 /lib/isabelle/State_monad_extras.thy | |
| parent | 30ba876d4c465d9a6cf2eba4eb1ac4c3dbc7ed22 (diff) | |
Rename some Isabelle theories
The suffix _lemmas is more descriptive than _extras.
Diffstat (limited to 'lib/isabelle/State_monad_extras.thy')
| -rw-r--r-- | lib/isabelle/State_monad_extras.thy | 146 |
1 files changed, 0 insertions, 146 deletions
diff --git a/lib/isabelle/State_monad_extras.thy b/lib/isabelle/State_monad_extras.thy deleted file mode 100644 index 406aec79..00000000 --- a/lib/isabelle/State_monad_extras.thy +++ /dev/null @@ -1,146 +0,0 @@ -theory State_monad_extras - imports - State_monad - Sail_values_extras -begin - -context - notes returnS_def[simp] and failS_def[simp] and throwS_def[simp] and readS_def[simp] and updateS_def[simp] -begin - -abbreviation "bindS_aux f \<equiv> (\<lambda>r. case r of (Value a, s') \<Rightarrow> f a s' | (Ex e, s') \<Rightarrow> [(Ex e, s')])" -abbreviation "bindS_app ms f \<equiv> List.concat (List.map (bindS_aux f) ms)" - -lemma bindS_ext_cong[fundef_cong]: - assumes m: "m1 s = m2 s" - and f: "\<And>a s'. (Value a, s') \<in> set (m2 s) \<Longrightarrow> f1 a s' = f2 a s'" - shows "bindS m1 f1 s = bindS m2 f2 s" -proof - - have "bindS_app (m2 s) f1 = bindS_app (m2 s) f2" - using f by (intro arg_cong[where f = List.concat]) (auto intro: map_ext split: result.splits) - then show ?thesis using m by (auto simp: bindS_def) -qed - -lemma bindS_cong[fundef_cong]: - assumes m: "m1 = m2" - and f: "\<And>s a s'. (Value a, s') \<in> set (m2 s) \<Longrightarrow> f1 a s' = f2 a s'" - shows "bindS m1 f1 = bindS m2 f2" - using assms by (blast intro: bindS_ext_cong) - -lemma bindS_returnS_left[simp]: "bindS (returnS x) f = f x" - by (auto simp add: bindS_def) - -lemma bindS_returnS_right[simp]: "bindS m returnS = (m :: ('regs, 'a, 'e) monadS)" -proof - - have "List.concat (map (bindS_aux returnS) ms) = ms" for ms :: "(('a, 'e) result \<times> 'regs sequential_state) list" - by (induction ms) (auto split: result.splits) - then show ?thesis unfolding bindS_def by blast -qed - -lemma bindS_readS: "bindS (readS f) m = (\<lambda>s. m (f s) s)" - by (auto simp: bindS_def) - -lemma bindS_updateS: "bindS (updateS f) m = (\<lambda>s. m () (f s))" - by (auto simp: bindS_def) - -lemma bindS_assoc[simp]: "bindS (bindS m f) g = bindS m (\<lambda>x. bindS (f x) g)" -proof - - have "List.concat (map (bindS_aux g) (List.concat (map (bindS_aux f) xs))) = - List.concat (map (bindS_aux (\<lambda>x s. List.concat (map (bindS_aux g) (f x s)))) xs)" for xs - by (induction xs) (auto split: result.splits) - then show ?thesis unfolding bindS_def by auto -qed - -lemma bindS_failS[simp]: "bindS (failS msg) f = failS msg" by (auto simp: bindS_def) -lemma bindS_throwS[simp]: "bindS (throwS e) f = throwS e" by (auto simp: bindS_def) -declare seqS_def[simp] - -lemma Value_bindS_elim: - assumes "(Value a, s') \<in> set (bindS m f s)" - obtains s'' a' where "(Value a', s'') \<in> set (m s)" and "(Value a, s') \<in> set (f a' s'')" - using assms by (auto simp: bindS_def; split result.splits; auto) - -abbreviation - "try_catchS_aux h r \<equiv> - (case r of - (Value a, s') => returnS a s' - | (Ex (Throw e), s') => h e s' - | (Ex (Failure msg), s') => [(Ex (Failure msg), s')])" -abbreviation "try_catchS_app ms h \<equiv> List.concat (List.map (try_catchS_aux h) ms)" - -lemma try_catchS_returnS[simp]: "try_catchS (returnS a) h = returnS a" - and try_catchS_failS[simp]: "try_catchS (failS msg) h = failS msg" - and try_catchS_throwS[simp]: "try_catchS (throwS e) h = h e" - by (auto simp: try_catchS_def) - -lemma try_catchS_cong[cong]: - assumes "\<And>s. m1 s = m2 s" and "\<And>e s. h1 e s = h2 e s" - shows "try_catchS m1 h1 = try_catchS m2 h2" - using assms by (intro arg_cong2[where f = try_catchS] ext) auto - -fun ignore_throw_app :: "(('a, 'e1) result \<times> 's) list \<Rightarrow> (('a, 'e2) result \<times> 's) list" where - "ignore_throw_app [] = []" -| "ignore_throw_app ((Value a, s) # ms) = (Value a, s) # ignore_throw_app ms" -| "ignore_throw_app ((Ex (Failure msg), s) # ms) = (Ex (Failure msg), s) # ignore_throw_app ms" -| "ignore_throw_app ((Ex (Throw e), s) # ms) = ignore_throw_app ms" -abbreviation ignore_throw :: "('r, 'a, 'e1) monadS \<Rightarrow> ('r, 'a, 'e2) monadS" where - "ignore_throw m \<equiv> \<lambda>s. ignore_throw_app (m s)" - -lemma [simp]: "ignore_throw_app ms = (Ex (Throw e), s) # ms' \<longleftrightarrow> False" - by (induction ms rule: ignore_throw_app.induct) auto - -lemma ignore_throw_app_append[simp]: - "ignore_throw_app (ms1 @ ms2) = ignore_throw_app ms1 @ ignore_throw_app ms2" - by (induction ms1 rule: ignore_throw_app.induct) auto - -lemma ignore_throw_app_bindS_app[simp]: - "ignore_throw_app (bindS_app ms f) = bindS_app (ignore_throw_app ms) (ignore_throw \<circ> f)" - by (induction ms rule: ignore_throw_app.induct) (auto split: result.splits) - -lemma ignore_throw_bindS[simp]: - "ignore_throw (bindS m f) = bindS (ignore_throw m) (ignore_throw \<circ> f)" - "ignore_throw (bindS m f) s = bindS (ignore_throw m) (ignore_throw \<circ> f) s" - unfolding bindS_def by auto - -lemma try_catchS_bindS_no_throw: - fixes m1 :: "('r, 'a, 'e1) monadS" and m2 :: "('r, 'a, 'e2) monadS" - assumes m1: "\<And>s. ignore_throw m1 s = m1 s" - and m2: "\<And>s. ignore_throw m1 s = m2 s" - shows "try_catchS (bindS m1 f) h = bindS m2 (\<lambda>a. try_catchS (f a) h)" -proof - fix s - have 1: "try_catchS_app (bindS_app ms f) h = - bindS_app (ignore_throw_app ms) (\<lambda>a s'. try_catchS_app (f a s') h)" - if "ignore_throw_app ms = ms" for ms - using that by (induction ms rule: ignore_throw_app.induct) auto - then show "try_catchS (bindS m1 f) h s = bindS m2 (\<lambda>a. try_catchS (f a) h) s" - using m1 unfolding try_catchS_def bindS_def m2[symmetric] by blast -qed - -lemma no_throw_mem_builtins: - "\<And>a. ignore_throw (returnS a) = returnS a" - "\<And>BC rk a sz s. ignore_throw (read_mem_bytesS BC rk a sz) s = read_mem_bytesS BC rk a sz s" - "\<And>BC a s. ignore_throw (read_tagS BC a) s = read_tagS BC a s" - "\<And>BC wk a sz s. ignore_throw (write_mem_eaS BC wk a sz) s = write_mem_eaS BC wk a sz s" - "\<And>v s. ignore_throw (write_mem_bytesS v) s = write_mem_bytesS v s" - "\<And>BC v s. ignore_throw (write_mem_valS BC v) s = write_mem_valS BC v s" - "\<And>t s. ignore_throw (write_tagS t) s = write_tagS t s" - "\<And>s. ignore_throw (excl_resultS ()) s = excl_resultS () s" - unfolding read_mem_bytesS_def read_memS_def read_tagS_def write_mem_eaS_def write_mem_valS_def write_mem_bytesS_def write_tagS_def excl_resultS_def - by (auto simp: bindS_def chooseS_def Let_def split: option.splits)+ - -lemma no_throw_read_memS: "ignore_throw (read_memS BCa BCb rk a sz) s = read_memS BCa BCb rk a sz s" - by (auto simp: read_memS_def no_throw_mem_builtins cong: bindS_cong) - -lemma no_throw_read_regvalS: "ignore_throw (read_regvalS r reg_name) s = read_regvalS r reg_name s" - by (cases r) (auto simp: bindS_def split: option.splits) - -lemma no_throw_write_regvalS: "ignore_throw (write_regvalS r reg_name v) s = write_regvalS r reg_name v s" - by (cases r) (auto simp: bindS_def split: option.splits) - -lemmas no_throw_builtins[simp, intro] = - no_throw_mem_builtins no_throw_read_regvalS no_throw_write_regvalS no_throw_read_memS - -end - -end |
