[68f9c43] | 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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| 7 | // GcTracer.h -- |
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| 8 | // |
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| 9 | // Author : Aaron B. Moss |
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| 10 | // Created On : Thu Mar 15 14:47:00 2018 |
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| 11 | // Last Modified By : Aaron B. Moss |
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| 12 | // Last Modified On : Thu Mar 15 14:47:00 2018 |
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| 13 | // Update Count : 1 |
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| 14 | // |
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| 15 | |
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| 16 | #pragma once |
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| 17 | |
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| 18 | #include <list> |
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| 19 | |
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| 20 | #include "BaseSyntaxNode.h" |
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| 21 | #include "Expression.h" |
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[bd06384] | 22 | #include "Type.h" |
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[68f9c43] | 23 | |
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| 24 | #include "Common/GC.h" |
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| 25 | #include "Common/PassVisitor.h" |
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| 26 | |
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| 27 | class Expression; |
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| 28 | |
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| 29 | /// Implements `trace` method for syntax nodes |
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| 30 | class GcTracer final : public WithShortCircuiting, public WithVisitorRef<GcTracer> { |
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| 31 | const GC& gc; |
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| 32 | |
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| 33 | public: |
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| 34 | GcTracer( const GC& gc ) : gc(gc) {} |
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| 35 | |
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[34dcc474] | 36 | // mark node and children |
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| 37 | |
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[68f9c43] | 38 | void previsit( BaseSyntaxNode * node ) { |
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| 39 | // skip tree if already seen |
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[bfc7811] | 40 | // if ( node->mark == gc.mark ) { |
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| 41 | // visit_children = false; |
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| 42 | // return; |
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| 43 | // } |
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[68f9c43] | 44 | |
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| 45 | // mark node |
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| 46 | node->mark = gc.mark; |
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| 47 | } |
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| 48 | |
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[34dcc474] | 49 | // add visits left out by PassVisitor |
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| 50 | |
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[68f9c43] | 51 | void postvisit( Expression* expr ) { |
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| 52 | maybeAccept( expr->env, *visitor ); |
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| 53 | } |
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[bd06384] | 54 | |
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[34dcc474] | 55 | void postvisit( UntypedExpr* expr ) { |
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| 56 | postvisit( static_cast<Expression*>(expr) ); |
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| 57 | maybeAccept( expr->function, *visitor ); |
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| 58 | } |
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| 59 | |
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[bd06384] | 60 | void postvisit( PointerType* pty ) { |
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| 61 | maybeAccept( pty->dimension, *visitor ); |
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| 62 | } |
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[68f9c43] | 63 | }; |
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| 64 | |
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| 65 | /// Traces entire translation unit recursively |
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| 66 | static inline const GC& operator<< ( const GC& gc, const std::list<Declaration*>& translationUnit ) { |
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| 67 | PassVisitor<GcTracer> tracer{ gc }; |
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[8d7bef2] | 68 | acceptAll( const_cast<std::list<Declaration*>&>( translationUnit ), tracer ); |
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[68f9c43] | 69 | return gc; |
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| 70 | } |
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| 71 | |
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| 72 | // Local Variables: // |
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| 73 | // tab-width: 4 // |
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| 74 | // mode: c++ // |
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| 75 | // compile-command: "make install" // |
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| 76 | // End: // |
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