1 | #ifndef INITIALIZER_H |
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2 | #define INITIALIZER_H |
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3 | |
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4 | #include "SynTree.h" |
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5 | #include "Visitor.h" |
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6 | #include "Mutator.h" |
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7 | |
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8 | #include <cassert> |
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9 | |
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10 | |
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11 | // Initializer: base class for object initializers (provide default values) |
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12 | class Initializer { |
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13 | public: |
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14 | // Initializer( std::string _name = std::string(""), int _pos = 0 ); |
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15 | Initializer( ); |
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16 | virtual ~Initializer(); |
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17 | |
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18 | static std::string designator_name( Expression *designator ); |
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19 | |
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20 | // void set_name( std::string newValue ) { name = newValue; } |
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21 | // std::string get_name() const { return name; } |
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22 | |
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23 | // void set_pos( int newValue ) { pos = newValue; } |
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24 | // int get_pos() const { return pos; } |
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25 | virtual void set_designators( std::list<Expression *> & ) { assert(false); } |
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26 | virtual std::list<Expression *> &get_designators() { |
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27 | assert(false); |
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28 | std::list<Expression *> *ret = 0; return *ret; // never reached |
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29 | } |
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30 | |
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31 | virtual Initializer *clone() const = 0; |
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32 | virtual void accept( Visitor &v ) = 0; |
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33 | virtual Initializer *acceptMutator( Mutator &m ) = 0; |
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34 | virtual void print( std::ostream &os, int indent = 0 ); |
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35 | private: |
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36 | // std::string name; |
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37 | // int pos; |
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38 | }; |
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39 | |
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40 | // SingleInit represents an initializer for a common object (e.g., int x = 4) |
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41 | class SingleInit : public Initializer { |
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42 | public: |
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43 | SingleInit( Expression *value, std::list< Expression *> &designators ); |
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44 | SingleInit( const SingleInit &other ); |
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45 | virtual ~SingleInit(); |
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46 | |
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47 | Expression *get_value() { return value; } |
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48 | void set_value( Expression *newValue ) { value = newValue; } |
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49 | |
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50 | void set_designators( std::list<Expression *> &newValue ) { designators = newValue; } |
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51 | std::list<Expression *> &get_designators() { return designators; } |
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52 | |
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53 | virtual SingleInit *clone() const; |
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54 | virtual void accept( Visitor &v ) { v.visit( this ); } |
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55 | virtual Initializer *acceptMutator( Mutator &m ) { return m.mutate( this ); } |
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56 | virtual void print( std::ostream &os, int indent = 0 ); |
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57 | private: |
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58 | //Constant *value; |
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59 | Expression *value; // has to be a compile-time constant |
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60 | std::list< Expression * > designators; |
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61 | }; |
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62 | |
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63 | // ListInit represents an initializer that is composed recursively of a list of initializers; this is used to initialize |
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64 | // an array or aggregate |
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65 | class ListInit : public Initializer { |
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66 | public: |
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67 | ListInit( std::list<Initializer*> &, |
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68 | std::list<Expression *> &designators = *(new std::list<Expression *>()) ); |
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69 | virtual ~ListInit(); |
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70 | |
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71 | void set_designators( std::list<Expression *> &newValue ) { designators = newValue; } |
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72 | std::list<Expression *> &get_designators() { return designators; } |
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73 | void set_initializers( std::list<Initializer*> &newValue ) { initializers = newValue; } |
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74 | std::list<Initializer*> &get_initializers() { return initializers; } |
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75 | |
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76 | std::list<Initializer*>::iterator begin_initializers() { return initializers.begin(); } |
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77 | std::list<Initializer*>::iterator end_initializers() { return initializers.end(); } |
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78 | |
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79 | virtual ListInit *clone() const; |
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80 | virtual void accept( Visitor &v ) { v.visit( this ); } |
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81 | virtual Initializer *acceptMutator( Mutator &m ) { return m.mutate( this ); } |
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82 | virtual void print( std::ostream &os, int indent = 0 ); |
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83 | private: |
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84 | std::list<Initializer*> initializers; // order *is* important |
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85 | std::list<Expression *> designators; |
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86 | }; |
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87 | |
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88 | #endif // INITIALIZER_H |
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