[51587aa] | 1 | //
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| 2 | // Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo
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| 3 | //
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| 4 | // The contents of this file are covered under the licence agreement in the
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| 5 | // file "LICENCE" distributed with Cforall.
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| 6 | //
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[a08ba92] | 7 | // LabelFixer.h --
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[51587aa] | 8 | //
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[843054c2] | 9 | // Author : Rodolfo G. Esteves
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[51587aa] | 10 | // Created On : Mon May 18 07:44:20 2015
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[be5aa1b] | 11 | // Last Modified By : Rob Schluntz
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| 12 | // Last Modified On : Tue May 26 12:55:10 2015
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| 13 | // Update Count : 4
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[51587aa] | 14 | //
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[a08ba92] | 15 |
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[51b73452] | 16 | #ifndef LABEL_FIXER_H
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| 17 | #define LABEL_FIXER_H
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| 18 |
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| 19 | #include "utility.h"
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| 20 | #include "SynTree/SynTree.h"
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| 21 | #include "SynTree/Visitor.h"
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| 22 | #include "LabelGenerator.h"
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| 23 |
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| 24 | #include <map>
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| 25 |
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| 26 | namespace ControlStruct {
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[a08ba92] | 27 | class LabelFixer : public Visitor {
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| 28 | typedef Visitor Parent;
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[d9a0e76] | 29 | public:
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[a08ba92] | 30 | LabelFixer( LabelGenerator *gen = 0 );
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| 31 |
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| 32 | std::map < Label, Statement * > *resolveJumps() throw ( SemanticError );
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| 33 |
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| 34 | // Declarations
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| 35 | virtual void visit( FunctionDecl *functionDecl );
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| 36 |
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| 37 | // Statements
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| 38 | void visit( Statement *stmt );
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| 39 |
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| 40 | virtual void visit( CompoundStmt *stmt ) { visit( (Statement *)stmt ); return Parent::visit( stmt ); }
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| 41 | virtual void visit( NullStmt *stmt ) { visit( (Statement *)stmt ); return Parent::visit( stmt ); }
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| 42 | virtual void visit( ExprStmt *stmt ) { visit( (Statement *)stmt ); return Parent::visit( stmt ); }
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| 43 | virtual void visit( IfStmt *stmt ) { visit( (Statement *)stmt ); return Parent::visit( stmt ); }
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| 44 | virtual void visit( WhileStmt *stmt ) { visit( (Statement *)stmt ); return Parent::visit( stmt ); }
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| 45 | virtual void visit( ForStmt *stmt ) { visit( (Statement *)stmt ); return Parent::visit( stmt ); }
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| 46 | virtual void visit( SwitchStmt *stmt ) { visit( (Statement *)stmt ); return Parent::visit( stmt ); }
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| 47 | virtual void visit( ChooseStmt *stmt ) { visit( (Statement *)stmt ); return Parent::visit( stmt ); }
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| 48 | virtual void visit( FallthruStmt *stmt ) { visit( (Statement *)stmt ); return Parent::visit( stmt ); }
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| 49 | virtual void visit( CaseStmt *stmt ) { visit( (Statement *)stmt ); return Parent::visit( stmt ); }
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| 50 | virtual void visit( ReturnStmt *stmt ) { visit( (Statement *)stmt ); return Parent::visit( stmt ); }
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| 51 | virtual void visit( TryStmt *stmt ) { visit( (Statement *)stmt ); return Parent::visit( stmt ); }
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| 52 | virtual void visit( CatchStmt *stmt ) { visit( (Statement *)stmt ); return Parent::visit( stmt ); }
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| 53 | virtual void visit( DeclStmt *stmt ) { visit( (Statement *)stmt ); return Parent::visit( stmt ); }
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| 54 | virtual void visit( BranchStmt *branchStmt );
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| 55 |
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| 56 | Label setLabelsDef( std::list< Label > &, Statement *definition );
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| 57 | Label setLabelsUsg( Label, Statement *usage = 0 );
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[d9a0e76] | 58 |
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| 59 | private:
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[a08ba92] | 60 | class Entry {
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| 61 | public:
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| 62 | Entry( Statement *to = 0, Statement *from = 0 );
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| 63 | bool used() { return ( usage.empty() ); }
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| 64 | bool defined() { return ( definition != 0 ); }
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| 65 | bool insideLoop();
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| 66 |
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| 67 | Label get_label() const { return label; }
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[be5aa1b] | 68 | void set_label( Label lab ) { label = lab; }
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| 69 |
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[a08ba92] | 70 | Statement *get_definition() const { return definition; }
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[be5aa1b] | 71 | void set_definition( Statement *def ) { definition = def; }
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[a08ba92] | 72 |
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[be5aa1b] | 73 | std::list< Statement *> &get_uses() { return usage; }
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[a08ba92] | 74 | void add_use ( Statement *use ) { usage.push_back( use ); }
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| 75 | void add_uses ( std::list<Statement *> uses ) { usage.insert( usage.end(), uses.begin(), uses.end() ); }
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| 76 | private:
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| 77 | Label label;
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| 78 | Statement *definition;
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| 79 | std::list<Statement *> usage;
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| 80 | };
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| 81 |
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| 82 | std::map < Label, Entry *> labelTable;
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| 83 | LabelGenerator *generator;
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[d9a0e76] | 84 | };
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[51b73452] | 85 | } // namespace ControlStruct
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| 86 |
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[d9a0e76] | 87 | #endif // LABEL_FIXER_H
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[51b73452] | 88 |
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[51587aa] | 89 | // Local Variables: //
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| 90 | // tab-width: 4 //
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| 91 | // mode: c++ //
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| 92 | // compile-command: "make install" //
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| 93 | // End: //
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