ADTaaron-thesisarm-ehast-experimentalcleanup-dtorsctordeferred_resndemanglerenumforall-pointer-decaygc_noraiijacob/cs343-translationjenkins-sandboxmemorynew-astnew-ast-unique-exprnew-envno_listpersistent-indexerpthread-emulationqualifiedEnumresolv-newstringwith_gc
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checked in by Peter A. Buhr <pabuhr@…>, 9 years ago
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1 | From the refrat (5.5) we have our specification: |
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2 | |
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3 | \section{Initialization} An expression that is used as an |
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4 | \nonterm{initializer} is treated as being cast to the type of the |
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5 | object being initialized. An expression used in an |
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6 | \nonterm{initializer-list} is treated as being cast to the type of |
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7 | the aggregate member that it initializes. In either case the cast |
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8 | must have a single unambiguous |
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9 | interpretation\index{interpretations}. |
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10 | |
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11 | Steps: |
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12 | |
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13 | - add a member function "void Resolver::visit( SynTree::DeclStmt |
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14 | *declStmt )"; for each DeclStmt: |
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15 | |
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16 | - do what you need to do to establish correspondences between |
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17 | expressions in the initializer and pieces of the object to be |
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18 | initialized |
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19 | |
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20 | - for each initializer expression, construct a cast expression that |
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21 | casts the value of the expression to the type of the corresponding |
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22 | sub-object |
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23 | |
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24 | - invoke the resolver recursively on each cast expression; it's an invariant |
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25 | of the resolver that attempting to resolve a cast expression results either |
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26 | in a single resolved expression (corresponding to the unambiguous interpretation |
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27 | referred to above) or a thrown SemanticError. |
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28 | |
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29 | - construct a new initializer from the resolved expressions |
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30 | |
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31 | You'll undoubtedly have to play with the CodeGen stuff a bit; I |
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32 | hacked it to spit out unresolved initializers for file-scope |
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33 | declarations so that real programs would compile. You'll want to make |
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34 | sure that resolved initializers for all declarations are being |
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35 | generated. |
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