[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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[0f8e4ac] | 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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[d3b7937] | 11 | // Last Modified By : Peter A. Buhr
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[4e06c1e] | 12 | // Last Modified On : Tue Jul 12 17:36:16 2016
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| 13 | // Update Count : 33
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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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[d3b7937] | 19 | #include "Common/utility.h"
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[51b73452] | 20 | #include "SynTree/SynTree.h"
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| 21 | #include "SynTree/Visitor.h"
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[0f8e4ac] | 22 | #include "SynTree/Label.h"
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[51b73452] | 23 | #include "LabelGenerator.h"
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| 24 | #include <map>
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| 25 |
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| 26 | namespace ControlStruct {
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[82dd287] | 27 | /// normalizes label definitions and generates multi-level exit labels
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[62e5546] | 28 | class LabelFixer final : public Visitor {
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[a08ba92] | 29 | typedef Visitor Parent;
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[d9a0e76] | 30 | public:
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[a08ba92] | 31 | LabelFixer( LabelGenerator *gen = 0 );
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| 32 |
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| 33 | std::map < Label, Statement * > *resolveJumps() throw ( SemanticError );
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| 34 |
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[62e5546] | 35 | using Visitor::visit;
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| 36 |
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[a08ba92] | 37 | // Declarations
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[62e5546] | 38 | virtual void visit( FunctionDecl *functionDecl ) override;
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[a08ba92] | 39 |
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| 40 | // Statements
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| 41 | void visit( Statement *stmt );
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| 42 |
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[62e5546] | 43 | virtual void visit( CompoundStmt *stmt ) override { visit( (Statement *)stmt ); return Parent::visit( stmt ); }
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| 44 | virtual void visit( NullStmt *stmt ) override { visit( (Statement *)stmt ); return Parent::visit( stmt ); }
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| 45 | virtual void visit( ExprStmt *stmt ) override { visit( (Statement *)stmt ); return Parent::visit( stmt ); }
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| 46 | virtual void visit( IfStmt *stmt ) override { visit( (Statement *)stmt ); return Parent::visit( stmt ); }
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| 47 | virtual void visit( WhileStmt *stmt ) override { visit( (Statement *)stmt ); return Parent::visit( stmt ); }
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| 48 | virtual void visit( ForStmt *stmt ) override { visit( (Statement *)stmt ); return Parent::visit( stmt ); }
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| 49 | virtual void visit( SwitchStmt *stmt ) override { visit( (Statement *)stmt ); return Parent::visit( stmt ); }
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| 50 | virtual void visit( CaseStmt *stmt ) override { visit( (Statement *)stmt ); return Parent::visit( stmt ); }
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| 51 | virtual void visit( ReturnStmt *stmt ) override { visit( (Statement *)stmt ); return Parent::visit( stmt ); }
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| 52 | virtual void visit( TryStmt *stmt ) override { visit( (Statement *)stmt ); return Parent::visit( stmt ); }
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| 53 | virtual void visit( CatchStmt *stmt ) override { visit( (Statement *)stmt ); return Parent::visit( stmt ); }
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| 54 | virtual void visit( DeclStmt *stmt ) override { visit( (Statement *)stmt ); return Parent::visit( stmt ); }
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| 55 | virtual void visit( BranchStmt *branchStmt ) override;
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| 56 | virtual void visit( UntypedExpr *untyped ) override;
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[a08ba92] | 57 |
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| 58 | Label setLabelsDef( std::list< Label > &, Statement *definition );
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[1869adf] | 59 | template< typename UsageNode >
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| 60 | void setLabelsUsg( Label, UsageNode *usage = 0 );
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[d9a0e76] | 61 |
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| 62 | private:
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[a08ba92] | 63 | class Entry {
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[1869adf] | 64 | public:
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| 65 | Entry( Statement *to ) : definition( to ) {}
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[a08ba92] | 66 | bool defined() { return ( definition != 0 ); }
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| 67 | bool insideLoop();
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| 68 |
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| 69 | Label get_label() const { return label; }
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[be5aa1b] | 70 | void set_label( Label lab ) { label = lab; }
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| 71 |
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[a08ba92] | 72 | Statement *get_definition() const { return definition; }
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[be5aa1b] | 73 | void set_definition( Statement *def ) { definition = def; }
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[a08ba92] | 74 |
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| 75 | private:
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[0f8e4ac] | 76 | Label label;
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[a08ba92] | 77 | Statement *definition;
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| 78 | };
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[0f8e4ac] | 79 |
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[a08ba92] | 80 | std::map < Label, Entry *> labelTable;
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| 81 | LabelGenerator *generator;
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[d9a0e76] | 82 | };
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[51b73452] | 83 | } // namespace ControlStruct
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| 84 |
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[d9a0e76] | 85 | #endif // LABEL_FIXER_H
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[51b73452] | 86 |
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[51587aa] | 87 | // Local Variables: //
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| 88 | // tab-width: 4 //
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| 89 | // mode: c++ //
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| 90 | // compile-command: "make install" //
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| 91 | // End: //
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