source: src/SynTree/CompoundStmt.cc @ ea6332d

aaron-thesisarm-ehcleanup-dtorsdeferred_resndemanglerjacob/cs343-translationjenkins-sandboxnew-astnew-ast-unique-exprnew-envno_listpersistent-indexerresolv-newwith_gc
Last change on this file since ea6332d was ea6332d, checked in by Thierry Delisle <tdelisle@…>, 4 years ago

Big header cleaning pass - commit 3

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[0dd3a2f]1//
2// Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo
3//
4// The contents of this file are covered under the licence agreement in the
5// file "LICENCE" distributed with Cforall.
6//
[a5a71d0]7// XXX.cc --
[0dd3a2f]8//
9// Author           : Richard C. Bilson
10// Created On       : Mon May 18 07:44:20 2015
[a5a71d0]11// Last Modified By : Rob Schluntz
[d7903b1]12// Last Modified On : Mon May 02 15:19:17 2016
[de62360d]13// Update Count     : 3
[0dd3a2f]14//
[51b7345]15
[ea6332d]16#include <cassert>                    // for assert, safe_dynamic_cast
17#include <list>                       // for list, _List_const_iterator, lis...
18#include <ostream>                    // for operator<<, ostream, basic_ostream
19#include <string>                     // for operator==, string
20
21#include "Common/utility.h"           // for cloneAll, deleteAll, printAll
22#include "Declaration.h"              // for DeclarationWithType, Declaration
23#include "Statement.h"                // for CompoundStmt, Statement, DeclStmt
24#include "SynTree/Label.h"            // for Label
25#include "SynTree/VarExprReplacer.h"  // for VarExprReplacer, VarExprReplace...
[51b7345]26
[c11e31c]27using std::string;
28using std::endl;
[51b7345]29
[4bf5298]30CompoundStmt::CompoundStmt( std::list<Label> labels ) : Statement( labels ) {
[51b7345]31}
32
[4bf5298]33CompoundStmt::CompoundStmt( const CompoundStmt &other ) : Statement( other ) {
[0dd3a2f]34        cloneAll( other.kids, kids );
[a5a71d0]35
[23bb1b9]36        // when cloning a compound statement, we may end up cloning declarations which
37        // are referred to by VariableExprs throughout the block. Cloning a VariableExpr
38        // does a shallow copy, so the VariableExpr will end up pointing to the original
39        // declaration. If the original declaration is deleted, e.g. because the original
40        // CompoundStmt is deleted, then we have a dangling pointer. To avoid this case,
41        // find all DeclarationWithType nodes (since a VariableExpr must point to a
42        // DeclarationWithType) in the original CompoundStmt and map them to the cloned
43        // node in the new CompoundStmt ('this'), then replace the Declarations referred to
44        // by each VariableExpr according to the constructed map. Note that only the declarations
45        // in the current level are collected into the map, because child CompoundStmts will
46        // recursively execute this routine. There may be more efficient ways of doing
47        // this.
48        VarExprReplacer::DeclMap declMap;
49        std::list< Statement * >::const_iterator origit = other.kids.begin();
50        for ( Statement * s : kids ) {
51                assert( origit != other.kids.end() );
52                Statement * origStmt = *origit++;
53                if ( DeclStmt * declStmt = dynamic_cast< DeclStmt * >( s ) ) {
[fc638d2]54                        DeclStmt * origDeclStmt = safe_dynamic_cast< DeclStmt * >( origStmt );
[23bb1b9]55                        if ( DeclarationWithType * dwt = dynamic_cast< DeclarationWithType * > ( declStmt->get_decl() ) ) {
[fc638d2]56                                DeclarationWithType * origdwt = safe_dynamic_cast< DeclarationWithType * > ( origDeclStmt->get_decl() );
[23bb1b9]57                                assert( dwt->get_name() == origdwt->get_name() );
58                                declMap[ origdwt ] = dwt;
[fc638d2]59                        } else assert( ! dynamic_cast< DeclarationWithType * > ( origDeclStmt->get_decl() ) );
60                } else assert( ! dynamic_cast< DeclStmt * > ( s ) );
[23bb1b9]61        }
62        if ( ! declMap.empty() ) {
63                VarExprReplacer replacer( declMap );
64                accept( replacer );
65        }
[51b7345]66}
67
[4bf5298]68CompoundStmt::~CompoundStmt() {
[0dd3a2f]69        deleteAll( kids );
[51b7345]70}
71
[de62360d]72void CompoundStmt::print( std::ostream &os, int indent ) const {
[60089f4]73        os << "CompoundStmt" << endl ;
[44b5ca0]74        printAll( kids, os, indent + 2 );
[51b7345]75}
76
[0dd3a2f]77// Local Variables: //
78// tab-width: 4 //
79// mode: c++ //
80// compile-command: "make install" //
81// End: //
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