Mercurial > hg > Members > atton > agda-proofs
annotate cbc/stack-subtype-sample.agda @ 64:44d448a978d3
Trying define n-push/n-pop equiv
author | atton <atton@cr.ie.u-ryukyu.ac.jp> |
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date | Sat, 14 Jan 2017 05:46:16 +0000 |
parents | c3afde46a41d |
children | c87e85ffde9a |
rev | line source |
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1 module stack-subtype-sample where |
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2 |
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3 open import Level renaming (suc to S ; zero to O) |
61 | 4 open import Function |
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5 open import Data.Nat |
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6 open import Data.Maybe |
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7 open import Relation.Binary.PropositionalEquality |
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8 |
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9 open import stack-subtype ℕ |
61 | 10 open import subtype Context as N |
11 open import subtype Meta as M | |
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12 |
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13 |
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14 record Num : Set where |
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15 field |
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16 num : ℕ |
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17 |
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18 instance |
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19 NumIsNormalDataSegment : N.DataSegment Num |
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20 NumIsNormalDataSegment = record { get = (\c -> record { num = Context.n c}) |
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21 ; set = (\c n -> record c {n = Num.num n})} |
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22 NumIsMetaDataSegment : M.DataSegment Num |
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23 NumIsMetaDataSegment = record { get = (\m -> record {num = Context.n (Meta.context m)}) |
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24 ; set = (\m n -> record m {context = record (Meta.context m) {n = Num.num n}})} |
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25 |
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26 |
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27 plus3 : Num -> Num |
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28 plus3 record { num = n } = record {num = n + 3} |
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29 |
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30 plus3CS : N.CodeSegment Num Num |
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31 plus3CS = N.cs plus3 |
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32 |
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33 |
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34 |
61 | 35 plus5AndPushWithPlus3 : {mc : Meta} {{_ : N.DataSegment Num}} |
36 -> M.CodeSegment Num (Meta) | |
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37 plus5AndPushWithPlus3 {mc} {{nn}} = M.cs (\n -> record {context = con n ; nextCS = (liftContext {{nn}} {{nn}} plus3CS) ; stack = st} ) |
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38 where |
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39 co = Meta.context mc |
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40 con : Num -> Context |
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41 con record { num = num } = N.DataSegment.set nn co record {num = num + 5} |
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42 st = Meta.stack mc |
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43 |
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44 |
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45 |
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46 |
61 | 47 push-sample : {{_ : N.DataSegment Num}} {{_ : M.DataSegment Num}} -> Meta |
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48 push-sample {{nd}} {{md}} = M.exec {{md}} (plus5AndPushWithPlus3 {mc} {{nd}}) mc |
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49 where |
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50 con = record { n = 4 ; element = just 0} |
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51 code = N.cs (\c -> c) |
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52 mc = record {context = con ; stack = emptySingleLinkedStack ; nextCS = code} |
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53 |
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54 |
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55 push-sample-equiv : push-sample ≡ record { nextCS = liftContext plus3CS |
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56 ; stack = record { top = nothing} |
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57 ; context = record { n = 9} } |
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58 push-sample-equiv = refl |
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59 |
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60 |
61 | 61 pushed-sample : {m : Meta} {{_ : N.DataSegment Num}} {{_ : M.DataSegment Num}} -> Meta |
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62 pushed-sample {m} {{nd}} {{md}} = M.exec {{md}} (M.csComp {m} {{md}} pushSingleLinkedStackCS (plus5AndPushWithPlus3 {mc} {{nd}})) mc |
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63 where |
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64 con = record { n = 4 ; element = just 0} |
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65 code = N.cs (\c -> c) |
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66 mc = record {context = con ; stack = emptySingleLinkedStack ; nextCS = code} |
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67 |
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68 |
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69 |
61 | 70 pushed-sample-equiv : {m : Meta} -> |
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71 pushed-sample {m} ≡ record { nextCS = liftContext plus3CS |
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72 ; stack = record { top = just (cons 0 nothing) } |
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73 ; context = record { n = 12} } |
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74 pushed-sample-equiv = refl |
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75 |
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76 |
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77 |
61 | 78 pushNum : N.CodeSegment Context Context |
79 pushNum = N.cs pn | |
80 where | |
81 pn : Context -> Context | |
62 | 82 pn record { n = n } = record { n = pred n ; element = just n} |
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83 |
61 | 84 |
62 | 85 pushOnce : Meta -> Meta |
86 pushOnce m = M.exec pushSingleLinkedStackCS m | |
61 | 87 |
62 | 88 n-push : {m : Meta} {{_ : M.DataSegment Meta}} (n : ℕ) -> M.CodeSegment Meta Meta |
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89 n-push {{mm}} (zero) = M.cs {{mm}} {{mm}} id |
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90 n-push {m} {{mm}} (suc n) = M.csComp {m} {{mm}} {{mm}} {{mm}} {{mm}} (n-push {m} {{mm}} n) (M.cs {{mm}} {{mm}} pushOnce) |
62 | 91 |
63 | 92 popOnce : Meta -> Meta |
93 popOnce m = M.exec popSingleLinkedStackCS m | |
94 | |
95 n-pop : {m : Meta} {{_ : M.DataSegment Meta}} (n : ℕ) -> M.CodeSegment Meta Meta | |
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96 n-pop {{mm}} (zero) = M.cs {{mm}} {{mm}} id |
63 | 97 n-pop {m} {{mm}} (suc n) = M.csComp {m} {{mm}} {{mm}} {{mm}} {{mm}} (n-pop {m} {{mm}} n) (M.cs {{mm}} {{mm}} popOnce) |
98 | |
99 | |
61 | 100 |
101 | |
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102 initMeta : ℕ -> Maybe ℕ -> N.CodeSegment Context Context -> Meta |
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103 initMeta n mn code = record { context = record { n = n ; element = mn} |
61 | 104 ; stack = emptySingleLinkedStack |
105 ; nextCS = code | |
106 } | |
107 | |
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108 n-push-cs-exec = M.exec (n-push {meta} 3) meta |
62 | 109 where |
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110 meta = (initMeta 5 (just 9) pushNum) |
61 | 111 |
112 | |
62 | 113 n-push-cs-exec-equiv : n-push-cs-exec ≡ record { nextCS = pushNum |
114 ; context = record {n = 2 ; element = just 3} | |
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115 ; stack = record {top = just (cons 4 (just (cons 5 (just (cons 9 nothing)))))}} |
61 | 116 n-push-cs-exec-equiv = refl |
62 | 117 |
63 | 118 |
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119 n-pop-cs-exec = M.exec (n-pop {meta} 4) meta |
63 | 120 where |
121 meta = record { nextCS = N.cs id | |
122 ; context = record { n = 0 ; element = nothing} | |
123 ; stack = record {top = just (cons 9 (just (cons 8 (just (cons 7 (just (cons 6 (just (cons 5 nothing)))))))))} | |
124 } | |
125 | |
126 n-pop-cs-exec-equiv : n-pop-cs-exec ≡ record { nextCS = N.cs id | |
127 ; context = record { n = 0 ; element = just 6} | |
128 ; stack = record { top = just (cons 5 nothing)} | |
129 } | |
130 | |
131 n-pop-cs-exec-equiv = refl | |
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132 |
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133 |
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134 open ≡-Reasoning |
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135 |
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136 {- |
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137 comp-id-type : {m : Meta} {{mm : M.DataSegment Meta}} (f : M.CodeSegment Meta Meta) -> Set₁ |
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138 comp-id-type {m} {{mm}} f = M.csComp {m} {{mm}} {{mm}} {{mm}} {{mm}} f (M.cs {S O} {S O} {Meta} {Meta} {{mm}}{{mm}} id) ≡ f |
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139 |
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140 comp-id : {m : Meta} (f : M.CodeSegment Meta Meta) -> comp-id-type {m} f |
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141 comp-id (M.cs f) = refl |
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142 |
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143 n-pop-pop-once-n-push :(n : ℕ) (m : Meta) -> |
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144 M.exec (M.csComp {m} (M.csComp {m} (n-pop {m} n) (M.cs popOnce)) (n-push {m} (suc n))) m |
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145 ≡ |
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146 M.exec (M.csComp {m} (n-pop {m} n) (n-push {m} n)) m |
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147 n-pop-pop-once-n-push zero m = begin |
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148 M.exec (M.csComp {m} (M.csComp {m} (n-pop {m} zero) (M.cs popOnce)) (n-push {m} (suc zero))) m |
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149 ≡⟨ refl ⟩ |
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150 M.exec (M.csComp {m} (M.csComp {m} (M.cs {S O} {S O} {Meta} {Meta} id) (M.cs popOnce)) (n-push {m} (suc zero))) m |
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151 ≡⟨ {!!} ⟩ |
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152 M.exec (M.csComp {m} (M.cs popOnce) (n-push {m} (suc zero))) m |
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153 ≡⟨ {!!} ⟩ |
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154 M.exec (M.csComp {m} (n-pop {m} zero) (n-push {m} zero)) m |
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155 ∎ |
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156 n-pop-pop-once-n-push (suc n) m = {!!} |
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157 -} |
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158 |
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159 |
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160 |
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161 |
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162 id-meta : Context -> Meta |
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163 id-meta c = record { context = c ; nextCS = (N.cs id) ; stack = record {top = nothing}} |
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164 |
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165 |
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166 push-pop : (c : Context) -> M.exec (M.csComp {id-meta c} (M.cs popOnce) (M.cs pushOnce)) (id-meta c) ≡ id-meta c |
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167 push-pop record { n = n ; element = (just x) } = refl |
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168 push-pop record { n = n ; element = nothing } = refl |
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169 {- |
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170 n-pop-pop-once-n-push : (n : ℕ) (c : Context) -> |
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171 M.exec (M.csComp {id-meta c} (M.csComp {id-meta c} (n-pop {id-meta c} n) (M.cs popOnce)) (n-push {id-meta c} (suc n))) (id-meta c) |
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172 ≡ |
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173 M.exec (M.csComp {id-meta c} (n-pop {id-meta c} n) (n-push {id-meta c} n)) (id-meta c) |
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174 n-pop-pop-once-n-push zero c = begin |
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175 M.exec (M.csComp {id-meta c} (M.csComp {id-meta c}(n-pop {id-meta c} zero) (M.cs popOnce)) (n-push {id-meta c} (suc zero))) (id-meta c) |
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176 ≡⟨ refl ⟩ |
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177 M.exec (M.csComp {id-meta c} (M.csComp {id-meta c} (M.cs {S O} {S O} {Meta} {Meta} id) (M.cs popOnce)) (n-push {id-meta c} (suc zero))) (id-meta c) |
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178 ≡⟨ refl ⟩ |
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179 M.exec (M.csComp {id-meta c} (M.cs popOnce) (n-push {id-meta c} (suc zero))) (id-meta c) |
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180 ≡⟨ refl ⟩ |
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181 M.exec (M.csComp {id-meta c} (M.cs popOnce) (M.cs pushOnce)) (id-meta c) |
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182 ≡⟨ push-pop c ⟩ |
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183 id-meta c |
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184 ≡⟨ refl ⟩ |
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185 M.exec (M.csComp {id-meta c} (n-pop {id-meta c} zero) (n-push {id-meta c} zero)) (id-meta c) |
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186 ∎ |
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187 n-pop-pop-once-n-push (suc n) c = begin |
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188 M.exec (M.csComp (M.csComp (n-pop (suc n)) (M.cs popOnce)) (n-push (suc (suc n)))) (id-meta c) |
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189 ≡⟨ cong (\f -> M.exec f (id-meta c)) (sym (M.comp-associative (n-push (suc (suc n))) (M.cs popOnce) (n-pop (suc n)))) ⟩ |
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190 M.exec (M.csComp (n-pop (suc n)) (M.csComp (M.cs popOnce) (n-push (suc (suc n))))) (id-meta c) |
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191 ≡⟨ {!!} ⟩ |
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192 M.exec (M.csComp (n-pop (suc n)) (n-push (suc n))) (id-meta c) |
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193 ∎ |
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194 -} |
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195 |
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196 exec-comp : (f g : M.CodeSegment Meta Meta) (m : Meta) -> M.exec (M.csComp {m} f g) m ≡ M.exec f (M.exec g m) |
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197 exec-comp (M.cs x) (M.cs _) m = refl |
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198 |
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199 |
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200 |
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201 n-push-pop : (n : ℕ) (c : Context) -> |
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202 (M.exec (M.csComp {id-meta c} (M.cs popOnce) (n-push {id-meta c} (suc n))) (id-meta c)) ≡ M.exec (n-push {id-meta c} n) (id-meta c) |
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203 n-push-pop zero c = push-pop c |
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204 n-push-pop (suc n) c = begin |
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205 M.exec (M.csComp (M.cs popOnce) (n-push (suc (suc n)))) (id-meta c) |
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206 ≡⟨ refl ⟩ |
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207 M.exec (M.csComp (M.cs popOnce) (M.csComp (n-push (suc n)) (M.cs pushOnce))) (id-meta c) |
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208 ≡⟨ cong (\f -> M.exec f (id-meta c)) (M.comp-associative (M.cs pushOnce) (n-push (suc n)) (M.cs popOnce) ) ⟩ |
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209 M.exec (M.csComp (M.csComp (M.cs popOnce) (n-push (suc n))) (M.cs pushOnce)) (id-meta c) |
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210 ≡⟨ exec-comp (M.csComp (M.cs popOnce) (n-push (suc n))) (M.cs pushOnce) (id-meta c) ⟩ |
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211 M.exec (M.csComp (M.cs popOnce) (n-push (suc n))) (M.exec (M.cs pushOnce) (id-meta c)) |
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212 ≡⟨ refl ⟩ |
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213 M.exec (M.csComp (M.cs popOnce) (M.csComp (n-push n) (M.cs pushOnce))) (M.exec (M.cs pushOnce) (id-meta c)) |
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214 ≡⟨ {!!} ⟩ |
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215 M.exec (n-push (suc n)) (id-meta c) |
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216 ∎ |
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217 |
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218 |
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219 n-push-pop-equiv : {c : Context} -> (n : ℕ ) |
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220 -> M.exec (M.csComp {id-meta c} (n-pop {id-meta c} n) (n-push {id-meta c} n)) (id-meta c) ≡ (id-meta c) |
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221 n-push-pop-equiv zero = refl |
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222 n-push-pop-equiv {c} (suc n) = begin |
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223 M.exec (M.csComp (n-pop (suc n)) (n-push (suc n))) (id-meta c) |
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224 ≡⟨ refl ⟩ |
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225 M.exec (M.csComp (M.csComp (n-pop n) (M.cs popOnce)) (n-push (suc n))) (id-meta c) |
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226 ≡⟨ cong (\f -> M.exec f (id-meta c)) (sym (M.comp-associative (n-push (suc n)) (M.cs popOnce) (n-pop n))) ⟩ |
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227 M.exec (M.csComp (n-pop n) (M.csComp (M.cs popOnce) (n-push (suc n)))) (id-meta c) |
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228 ≡⟨ exec-comp (n-pop n) (M.csComp (M.cs popOnce) (n-push (suc n))) (id-meta c) ⟩ |
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229 M.exec (n-pop n) (M.exec (M.csComp (M.cs popOnce) (n-push (suc n))) (id-meta c)) |
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230 ≡⟨ cong (\x -> M.exec (n-pop n) x) (n-push-pop n c ) ⟩ |
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231 M.exec (n-pop n) (M.exec (n-push {id-meta c} n) (id-meta c)) |
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232 ≡⟨ sym (exec-comp (n-pop n) (n-push n) (id-meta c)) ⟩ |
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233 M.exec (M.csComp (n-pop n) (n-push n)) (id-meta c) |
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234 ≡⟨ n-push-pop-equiv n ⟩ |
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235 id-meta c |
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236 ∎ |