[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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[51b7345] | 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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[51b7345] | 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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[51b7345] | 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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[a08ba92] | 28 | class LabelFixer : public Visitor { |
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| 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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| 35 | // Declarations |
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| 36 | virtual void visit( FunctionDecl *functionDecl ); |
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| 37 | |
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| 38 | // Statements |
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| 39 | void visit( Statement *stmt ); |
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| 40 | |
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| 41 | virtual void visit( CompoundStmt *stmt ) { visit( (Statement *)stmt ); return Parent::visit( stmt ); } |
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| 42 | virtual void visit( NullStmt *stmt ) { visit( (Statement *)stmt ); return Parent::visit( stmt ); } |
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| 43 | virtual void visit( ExprStmt *stmt ) { visit( (Statement *)stmt ); return Parent::visit( stmt ); } |
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| 44 | virtual void visit( IfStmt *stmt ) { visit( (Statement *)stmt ); return Parent::visit( stmt ); } |
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| 45 | virtual void visit( WhileStmt *stmt ) { visit( (Statement *)stmt ); return Parent::visit( stmt ); } |
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| 46 | virtual void visit( ForStmt *stmt ) { visit( (Statement *)stmt ); return Parent::visit( stmt ); } |
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| 47 | virtual void visit( SwitchStmt *stmt ) { visit( (Statement *)stmt ); return Parent::visit( stmt ); } |
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| 48 | virtual void visit( CaseStmt *stmt ) { visit( (Statement *)stmt ); return Parent::visit( stmt ); } |
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| 49 | virtual void visit( ReturnStmt *stmt ) { visit( (Statement *)stmt ); return Parent::visit( stmt ); } |
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| 50 | virtual void visit( TryStmt *stmt ) { visit( (Statement *)stmt ); return Parent::visit( stmt ); } |
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| 51 | virtual void visit( CatchStmt *stmt ) { visit( (Statement *)stmt ); return Parent::visit( stmt ); } |
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| 52 | virtual void visit( DeclStmt *stmt ) { visit( (Statement *)stmt ); return Parent::visit( stmt ); } |
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| 53 | virtual void visit( BranchStmt *branchStmt ); |
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[1869adf] | 54 | virtual void visit( UntypedExpr *untyped ); |
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[a08ba92] | 55 | |
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| 56 | Label setLabelsDef( std::list< Label > &, Statement *definition ); |
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[1869adf] | 57 | template< typename UsageNode > |
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| 58 | void setLabelsUsg( Label, UsageNode *usage = 0 ); |
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[d9a0e76] | 59 | |
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| 60 | private: |
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[a08ba92] | 61 | class Entry { |
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[1869adf] | 62 | public: |
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| 63 | Entry( Statement *to ) : definition( to ) {} |
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[a08ba92] | 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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| 73 | private: |
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[0f8e4ac] | 74 | Label label; |
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[a08ba92] | 75 | Statement *definition; |
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| 76 | }; |
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[0f8e4ac] | 77 | |
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[a08ba92] | 78 | std::map < Label, Entry *> labelTable; |
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| 79 | LabelGenerator *generator; |
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[d9a0e76] | 80 | }; |
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[51b7345] | 81 | } // namespace ControlStruct |
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| 82 | |
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[d9a0e76] | 83 | #endif // LABEL_FIXER_H |
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[51b7345] | 84 | |
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[51587aa] | 85 | // Local Variables: // |
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| 86 | // tab-width: 4 // |
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| 87 | // mode: c++ // |
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| 88 | // compile-command: "make install" // |
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| 89 | // End: // |
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