Package parser-stream: Basic theory of parse streams

Information

name	parser-stream
version	1.5
description	Basic theory of parse streams
author	Joe Hurd <joe@gilith.com>
license	MIT
show	Data.Bool Data.List Data.Option Data.Pair Parser.Stream Relation

Files

Package tarball parser-stream-1.5.tgz
Theory file parser-stream.thy (included in the package tarball)

Defined Type Operator

Parser
- Stream
  - stream

Defined Constants

Parser
- Stream
  - append
  - case
  - eof
  - error
  - fromList
  - isProperSuffix
  - isSuffix
  - length
  - stream
  - toList

Theorems

⊦ wellFounded isProperSuffix

⊦ ∀x. isSuffix x x

⊦ ∀x. ¬isProperSuffix x x

⊦ ∀l. fromList l = append l eof

⊦ ∀l. length (fromList l) = length l

⊦ ∀l. toList (fromList l) = some l

⊦ ∀x y. isProperSuffix x y ⇒ isSuffix x y

⊦ ∀s. case T (λl. length l = length s) (toList s)

⊦ ∀x y. isProperSuffix x y ⇒ Number.Natural.< (length x) (length y)

⊦ ∀x y. isSuffix x y ⇒ Number.Natural.≤ (length x) (length y)

⊦ ∀l s. length (append l s) = Number.Natural.+ (length l) (length s)

⊦ ∀s s'. isSuffix s s' ⇔ s = s' ∨ isProperSuffix s s'

⊦ ∀x y z. append (x @ y) z = append x (append y z)

⊦ ∀x y z. isProperSuffix x y ∧ isProperSuffix y z ⇒ isProperSuffix x z

⊦ ∀x y z. isSuffix x y ∧ isSuffix y z ⇒ isSuffix x z

⊦ ∀l s. toList (append l s) = case none (λls. some (l @ ls)) (toList s)

⊦ ∀x. x = error ∨ x = eof ∨ ∃a0 a1. x = stream a0 a1

⊦ ∀p. (∀x. (∀y. isProperSuffix y x ⇒ p y) ⇒ p x) ⇒ ∀x. p x

⊦ ∀a0 a1 a0' a1'. stream a0 a1 = stream a0' a1' ⇔ a0 = a0' ∧ a1 = a1'

⊦ length error = Number.Numeral.zero ∧ length eof = Number.Numeral.zero ∧
∀a s. length (stream a s) = Number.Natural.suc (length s)

⊦ ∀P. P error ∧ P eof ∧ (∀a0 a1. P a1 ⇒ P (stream a0 a1)) ⇒ ∀x. P x

⊦ (∀s. append [] s = s) ∧ ∀h t s. append (h :: t) s = stream h (append t s)

⊦ ¬(error = eof) ∧ (∀a0' a1'. ¬(error = stream a0' a1')) ∧
∀a0' a1'. ¬(eof = stream a0' a1')

⊦ toList error = none ∧ toList eof = some [] ∧
∀a s. toList (stream a s) = case none (λl. some (a :: l)) (toList s)

⊦ ∀f0 f1 f2.
    ∃fn.
      fn error = f0 ∧ fn eof = f1 ∧
      ∀a0 a1. fn (stream a0 a1) = f2 a0 a1 (fn a1)

⊦ (∀s. isProperSuffix s error ⇔ F) ∧ (∀s. isProperSuffix s eof ⇔ F) ∧
∀s a s'. isProperSuffix s (stream a s') ⇔ s = s' ∨ isProperSuffix s s'

⊦ ∀h.
(∀f g s. (∀s'. isProperSuffix s' s ⇒ f s' = g s') ⇒ h f s = h g s) ⇒
∃f. ∀s. f s = h f s

⊦ (∀e b f. case e b f error = e) ∧ (∀e b f. case e b f eof = b) ∧
∀e b f a s. case e b f (stream a s) = f a s

Input Type Operators

→
bool
Data
- List
  - list
- Option
  - option
- Pair
  - *
Number
- Natural
  - Number.Natural.natural

Input Constants

=
Data
- Bool
  - ∀
  - ∧
  - ⇒
  - ∃
  - ∃!
  - ∨
  - ¬
  - cond
  - select
  - F
  - T
- List
  - ::
  - @
  - []
  - length
- Option
  - case
  - none
  - some
- Pair
  - ,
Number
- Natural
  - Number.Natural.*
  - Number.Natural.+
  - Number.Natural.<
  - Number.Natural.≤
  - Number.Natural.even
  - Number.Natural.exp
  - Number.Natural.suc
- Numeral
  - Number.Numeral.bit0
  - Number.Numeral.bit1
  - Number.Numeral.zero
Relation
- measure
- wellFounded

Assumptions

⊦ T

⊦ ∀n. Number.Natural.≤ Number.Numeral.zero n

⊦ ∀n. Number.Natural.≤ n n

⊦ ∀m. wellFounded (measure m)

⊦ F ⇔ ∀p. p

⊦ (¬) = λp. p ⇒ F

⊦ (∃) = λP. P ((select) P)

⊦ ∀a. ∃!x. x = a

⊦ ∀t. (∀x. t) ⇔ t

⊦ ∀t. (∃x. t) ⇔ t

⊦ ∀t. (λx. t x) = t

⊦ (∀) = λP. P = λx. T

⊦ ∀x. x = x ⇔ T

⊦ ∀n. ¬(Number.Natural.suc n = Number.Numeral.zero)

⊦ ∀m. Number.Natural.+ m Number.Numeral.zero = m

⊦ ∀n.
    Number.Natural.even
      (Number.Natural.*
         (Number.Numeral.bit0 (Number.Numeral.bit1 Number.Numeral.zero)) n)

⊦ ∀n. Number.Numeral.bit0 n = Number.Natural.+ n n

⊦ ∀x. case none some x = x

⊦ (⇒) = λp q. p ∧ q ⇔ p

⊦ ∀t. (t ⇔ T) ∨ (t ⇔ F)

⊦ ∀n. Number.Numeral.bit1 n = Number.Natural.suc (Number.Natural.+ n n)

⊦ (¬T ⇔ F) ∧ (¬F ⇔ T)

⊦ ∀t1 t2. t1 ∨ t2 ⇔ t2 ∨ t1

⊦ ∀m n. Number.Natural.< m n ⇒ Number.Natural.≤ m n

⊦ ∀<< x. wellFounded << ⇒ ¬<< x x

⊦ ∀n.
    Number.Natural.*
      (Number.Numeral.bit0 (Number.Numeral.bit1 Number.Numeral.zero)) n =
    Number.Natural.+ n n

⊦ ∀m. measure m = λx y. Number.Natural.< (m x) (m y)

⊦ ∀m n. ¬(Number.Natural.< m n ∧ Number.Natural.≤ n m)

⊦ ∀m n. ¬(Number.Natural.≤ m n ∧ Number.Natural.< n m)

⊦ ∀m n. Number.Natural.< m (Number.Natural.suc n) ⇔ Number.Natural.≤ m n

⊦ ∀m n. Number.Natural.≤ (Number.Natural.suc m) n ⇔ Number.Natural.< m n

⊦ ∀x. x = none ∨ ∃a. x = some a

⊦ (∧) = λp q. (λf. f p q) = λf. f T T

⊦ (∃) = λP. ∀q. (∀x. P x ⇒ q) ⇒ q

⊦ ∀m n. Number.Natural.suc m = Number.Natural.suc n ⇔ m = n

⊦ ∀m n.
Number.Natural.even (Number.Natural.* m n) ⇔
Number.Natural.even m ∨ Number.Natural.even n

⊦ ∀m n.
Number.Natural.even (Number.Natural.+ m n) ⇔ Number.Natural.even m ⇔
Number.Natural.even n

⊦ ∀f g. f = g ⇔ ∀x. f x = g x

⊦ ∀P a. (∃x. a = x ∧ P x) ⇔ P a

⊦ (∨) = λp q. ∀r. (p ⇒ r) ⇒ (q ⇒ r) ⇒ r

⊦ (Number.Natural.even Number.Numeral.zero ⇔ T) ∧
∀n. Number.Natural.even (Number.Natural.suc n) ⇔ ¬Number.Natural.even n

⊦ ∀m n. Number.Natural.≤ m n ⇔ Number.Natural.< m n ∨ m = n

⊦ ∀m n. Number.Natural.≤ m n ∧ Number.Natural.≤ n m ⇔ m = n

⊦ ∀P Q. (∃x. P ∧ Q x) ⇔ P ∧ ∃x. Q x

⊦ ∀t1 t2 t3. t1 ∧ t2 ∧ t3 ⇔ (t1 ∧ t2) ∧ t3

⊦ ∀t1 t2 t3. t1 ∨ t2 ∨ t3 ⇔ (t1 ∨ t2) ∨ t3

⊦ ∀m n p.
Number.Natural.* m (Number.Natural.* n p) =
Number.Natural.* (Number.Natural.* m n) p

⊦ ∀m n p. Number.Natural.+ m p = Number.Natural.+ n p ⇔ m = n

⊦ ∀P x. (∀y. P y ⇔ y = x) ⇒ (select) P = x

⊦ ∀P. (∀x. ∃y. P x y) ⇔ ∃y. ∀x. P x (y x)

⊦ ∀t1 t2. (if T then t1 else t2) = t1 ∧ (if F then t1 else t2) = t2

⊦ ∀m n.
Number.Natural.* m n = Number.Numeral.zero ⇔
m = Number.Numeral.zero ∨ n = Number.Numeral.zero

⊦ length [] = Number.Numeral.zero ∧
∀h t. length (h :: t) = Number.Natural.suc (length t)

⊦ ∀P.
P Number.Numeral.zero ∧ (∀n. P n ⇒ P (Number.Natural.suc n)) ⇒ ∀n. P n

⊦ (∀t. ¬¬t ⇔ t) ∧ (¬T ⇔ F) ∧ (¬F ⇔ T)

⊦ ∀m n.
Number.Natural.exp m n = Number.Numeral.zero ⇔
m = Number.Numeral.zero ∧ ¬(n = Number.Numeral.zero)

⊦ ∀P Q. (∀x. P x ∧ Q x) ⇔ (∀x. P x) ∧ ∀x. Q x

⊦ ∀P Q. (∀x. P x ⇒ Q x) ⇒ (∀x. P x) ⇒ ∀x. Q x

⊦ ∀P Q. (∀x. P x ⇒ Q x) ⇒ (∃x. P x) ⇒ ∃x. Q x

⊦ ∀P Q. (∀x. P x) ∧ (∀x. Q x) ⇔ ∀x. P x ∧ Q x

⊦ ∀e f.
    ∃fn.
      fn Number.Numeral.zero = e ∧
      ∀n. fn (Number.Natural.suc n) = f (fn n) n

⊦ ∀P. P [] ∧ (∀a0 a1. P a1 ⇒ P (a0 :: a1)) ⇒ ∀x. P x

⊦ ∀<< <<<. (∀x y. << x y ⇒ <<< x y) ∧ wellFounded <<< ⇒ wellFounded <<

⊦ ∀m n p.
Number.Natural.* m n = Number.Natural.* m p ⇔
m = Number.Numeral.zero ∨ n = p

⊦ ∀m n p.
Number.Natural.≤ (Number.Natural.* m n) (Number.Natural.* m p) ⇔
m = Number.Numeral.zero ∨ Number.Natural.≤ n p

⊦ ∀m n p.
Number.Natural.< (Number.Natural.* m n) (Number.Natural.* m p) ⇔
¬(m = Number.Numeral.zero) ∧ Number.Natural.< n p

⊦ ∀x y a b. (x, y) = (a, b) ⇔ x = a ∧ y = b

⊦ ∀A B C D. (A ⇒ B) ∧ (C ⇒ D) ⇒ A ∧ C ⇒ B ∧ D

⊦ ∀A B C D. (A ⇒ B) ∧ (C ⇒ D) ⇒ A ∨ C ⇒ B ∨ D

⊦ ∀P. (∀x. ∃!y. P x y) ⇔ ∃f. ∀x y. P x y ⇔ f x = y

⊦ (∀m.
     Number.Natural.exp m Number.Numeral.zero =
     Number.Numeral.bit1 Number.Numeral.zero) ∧
  ∀m n.
    Number.Natural.exp m (Number.Natural.suc n) =
    Number.Natural.* m (Number.Natural.exp m n)

⊦ ∀P c x y. P (if c then x else y) ⇔ (c ⇒ P x) ∧ (¬c ⇒ P y)

⊦ ∀NIL' CONS'.
∃fn. fn [] = NIL' ∧ ∀a0 a1. fn (a0 :: a1) = CONS' a0 a1 (fn a1)

⊦ ∀P. (∃!x. P x) ⇔ (∃x. P x) ∧ ∀x x'. P x ∧ P x' ⇒ x = x'

⊦ ∀<<. wellFounded << ⇔ ∀P. (∀x. (∀y. << y x ⇒ P y) ⇒ P x) ⇒ ∀x. P x

⊦ (∀b f. case b f none = b) ∧ ∀b f a. case b f (some a) = f a

⊦ (∀l. [] @ l = l) ∧ ∀h t l. (h :: t) @ l = h :: t @ l

⊦ (∀m. Number.Natural.≤ m Number.Numeral.zero ⇔ m = Number.Numeral.zero) ∧
  ∀m n.
    Number.Natural.≤ m (Number.Natural.suc n) ⇔
    m = Number.Natural.suc n ∨ Number.Natural.≤ m n

⊦ ∀t. ((T ⇔ t) ⇔ t) ∧ ((t ⇔ T) ⇔ t) ∧ ((F ⇔ t) ⇔ ¬t) ∧ ((t ⇔ F) ⇔ ¬t)

⊦ ∀t. (T ∧ t ⇔ t) ∧ (t ∧ T ⇔ t) ∧ (F ∧ t ⇔ F) ∧ (t ∧ F ⇔ F) ∧ (t ∧ t ⇔ t)

⊦ ∀t. (T ∨ t ⇔ T) ∧ (t ∨ T ⇔ T) ∧ (F ∨ t ⇔ t) ∧ (t ∨ F ⇔ t) ∧ (t ∨ t ⇔ t)

⊦ ∀t. (T ⇒ t ⇔ t) ∧ (t ⇒ T ⇔ T) ∧ (F ⇒ t ⇔ T) ∧ (t ⇒ t ⇔ T) ∧ (t ⇒ F ⇔ ¬t)

⊦ ∀<<.
    wellFounded << ⇒
    ∀H.
      (∀f g x. (∀z. << z x ⇒ f z = g z) ⇒ H f x = H g x) ⇒
      ∃f. ∀x. f x = H f x

⊦ (∀n. Number.Natural.+ Number.Numeral.zero n = n) ∧
  (∀m. Number.Natural.+ m Number.Numeral.zero = m) ∧
  (∀m n.
     Number.Natural.+ (Number.Natural.suc m) n =
     Number.Natural.suc (Number.Natural.+ m n)) ∧
  ∀m n.
    Number.Natural.+ m (Number.Natural.suc n) =
    Number.Natural.suc (Number.Natural.+ m n)

⊦ ∀p q r.
(p ∨ q ⇔ q ∨ p) ∧ ((p ∨ q) ∨ r ⇔ p ∨ q ∨ r) ∧ (p ∨ q ∨ r ⇔ q ∨ p ∨ r) ∧
(p ∨ p ⇔ p) ∧ (p ∨ p ∨ q ⇔ p ∨ q)