ADTarm-ehast-experimentalenumforall-pointer-decayjacob/cs343-translationnew-ast-unique-exprpthread-emulationqualifiedEnum
Last change
on this file since 63ec5fa was
5e82d56,
checked in by Peter A. Buhr <pabuhr@…>, 4 years ago
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temporary collection types for testing
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Property mode set to
100644
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File size:
1.3 KB
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1 | #pragma once |
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2 | |
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3 | struct Colable { |
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4 | Colable * next; // next node in the list |
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5 | // invariant: (next != 0) <=> listed() |
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6 | }; |
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7 | |
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8 | inline { |
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9 | void ?{}( Colable & co ) with( co ) { |
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10 | next = 0p; |
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11 | } // post: ! listed() |
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12 | |
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13 | // return true iff *this is an element of a collection |
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14 | bool listed( Colable & co ) with( co ) { // pre: this != 0 |
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15 | return next != 0; |
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16 | } |
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17 | |
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18 | Colable * getNext( Colable & co ) with( co ) { |
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19 | return next; |
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20 | } |
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21 | |
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22 | Colable *& Next( Colable * cp ) { |
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23 | return cp->next; |
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24 | } |
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25 | } // distribution |
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26 | |
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27 | struct Collection { |
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28 | void * root; // pointer to root element of list |
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29 | }; |
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30 | |
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31 | inline { |
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32 | // class invariant: root == 0 & empty() | *root in *this |
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33 | void ?{}( Collection &, const Collection & ) = void; // no copy |
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34 | Collection & ?=?( const Collection & ) = void; // no assignment |
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35 | |
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36 | void ?{}( Collection & collection ) with( collection ) { |
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37 | root = 0p; |
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38 | } // post: empty() |
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39 | |
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40 | bool empty( Collection & collection ) with( collection ) { // 0 <=> *this contains no elements |
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41 | return root == 0p; |
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42 | } |
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43 | void * head( Collection & collection ) with( collection ) { |
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44 | return root; |
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45 | } // post: empty() & head() == 0 | !empty() & head() in *this |
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46 | } // distribution |
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47 | |
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48 | |
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49 | struct ColIter { |
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50 | void * curr; // element to be returned by >> |
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51 | }; |
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52 | |
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53 | inline { |
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54 | void ?{}( ColIter & colIter ) with( colIter ) { |
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55 | curr = 0p; |
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56 | } // post: elts = null |
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57 | } // distribution |
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