1 | /* |
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2 | * This file is part of the Cforall project |
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3 | * |
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4 | * $Id: StackTable.cc,v 1.3 2002/09/19 21:02:44 rcbilson Exp $ |
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5 | * |
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6 | */ |
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7 | |
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8 | #include <cassert> |
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9 | |
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10 | #include "StackTable.h" |
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11 | |
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12 | namespace SymTab { |
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13 | |
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14 | template< typename Element, typename ConflictFunction > |
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15 | StackTable< Element, ConflictFunction >::StackTable() |
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16 | : scopeLevel( 0 ) |
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17 | { |
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18 | } |
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19 | |
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20 | template< typename Element, typename ConflictFunction > |
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21 | void |
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22 | StackTable< Element, ConflictFunction >::enterScope() |
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23 | { |
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24 | scopeLevel++; |
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25 | } |
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26 | |
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27 | template< typename Element, typename ConflictFunction > |
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28 | void |
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29 | StackTable< Element, ConflictFunction >::leaveScope() |
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30 | { |
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31 | for( typename TableType::iterator it = table.begin(); it != table.end(); ++it ) { |
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32 | std::stack< Entry >& entry = it->second; |
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33 | if( !entry.empty() && entry.top().second == scopeLevel ) { |
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34 | entry.pop(); |
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35 | } |
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36 | } |
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37 | |
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38 | scopeLevel--; |
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39 | assert( scopeLevel >= 0 ); |
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40 | } |
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41 | |
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42 | template< typename Element, typename ConflictFunction > |
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43 | void |
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44 | StackTable< Element, ConflictFunction >::add( Element *type ) |
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45 | { |
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46 | std::stack< Entry >& entry = table[ type->get_name() ]; |
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47 | if( !entry.empty() && entry.top().second == scopeLevel ) { |
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48 | entry.top().first = conflictFunction( entry.top().first, type ); |
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49 | } else { |
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50 | entry.push( Entry( type, scopeLevel ) ); |
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51 | } |
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52 | } |
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53 | |
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54 | template< typename Element, typename ConflictFunction > |
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55 | void |
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56 | StackTable< Element, ConflictFunction >::add( std::string fwdDeclName ) |
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57 | { |
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58 | add( new Element( fwdDeclName ) ); |
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59 | } |
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60 | |
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61 | template< typename Element, typename ConflictFunction > |
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62 | Element * |
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63 | StackTable< Element, ConflictFunction >::lookup( std::string id ) const |
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64 | { |
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65 | typename TableType::const_iterator it = table.find( id ); |
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66 | if( it == table.end() ) { |
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67 | return 0; |
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68 | } else if( !it->second.empty() ) { |
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69 | return it->second.top().first; |
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70 | } else { |
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71 | return 0; |
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72 | } |
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73 | } |
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74 | |
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75 | template< typename Element, typename ConflictFunction > |
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76 | void |
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77 | StackTable< Element, ConflictFunction >::dump( std::ostream &os ) const |
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78 | { |
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79 | for( typename TableType::const_iterator it = table.begin(); it != table.end(); ++it ) { |
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80 | const std::stack< Entry >& entry = it->second; |
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81 | if( !entry.empty() && entry.top().second == scopeLevel ) { |
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82 | os << it->first << std::endl; |
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83 | } |
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84 | } |
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85 | } |
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86 | |
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87 | } // namespace SymTab |
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