source: src/SymTab/Autogen.h @ 972e6f7

aaron-thesisarm-ehcleanup-dtorsctordeferred_resndemanglergc_noraiijacob/cs343-translationjenkins-sandboxmemorynew-astnew-ast-unique-exprnew-envno_listpersistent-indexerresolv-newwith_gc
Last change on this file since 972e6f7 was 972e6f7, checked in by Rob Schluntz <rschlunt@…>, 6 years ago

separate autogen into Autogen.{cc,h}, make array destruction generate properly, generalize autogeneration routines

  • Property mode set to 100644
File size: 4.0 KB
Line 
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//
7// Autogen.h --
8//
9// Author           : Rob Schluntz
10// Created On       : Sun May 17 21:53:34 2015
11// Last Modified By : Rob Schluntz
12// Last Modified On : Tue May 19 16:49:43 2015
13// Update Count     : 1
14//
15
16#ifndef AUTOGEN_H
17#define AUTOGEN_H
18
19#include <string>
20#include "SynTree/Statement.h"
21#include "SynTree/Expression.h"
22#include "SynTree/Declaration.h"
23#include "SynTree/Initializer.h"
24
25namespace SymTab {
26  static const std::list< std::string > noLabels;
27
28  /// Generates assignment operators, constructors, and destructor for aggregate types as required
29  void autogenerateRoutines( std::list< Declaration * > &translationUnit );
30
31  // originally makeArrayAssignment - changed to Function because it is now used for ctors and dtors as well
32  // admittedly not a great name change. This used to live in Validate.cc, but has been moved so it can be reused elsewhere
33
34  /// Store in out a loop which calls fname on each element of the array with srcParam and dstParam as arguments.
35  /// If forward is true, loop goes from 0 to N-1, else N-1 to 0
36  template< typename OutputIterator >
37  void makeArrayFunction( Expression *srcParam, Expression *dstParam, ArrayType *array, std::string fname, OutputIterator out, bool forward = true ) {
38    static UniqueName indexName( "_index" );
39
40    // for a flexible array member nothing is done -- user must define own assignment
41    if ( ! array->get_dimension() ) return;
42
43    Expression * begin, * end, * update, * cmp;
44    if ( forward ) {
45      // generate: for ( int i = 0; i < 0; ++i )
46      begin = new NameExpr( "0" );
47      end = array->get_dimension()->clone();
48      cmp = new NameExpr( "?<?" );
49      update = new NameExpr( "++?" );
50    } else {
51      // generate: for ( int i = N-1; i >= 0; --i )
52      begin = new UntypedExpr( new NameExpr( "?-?" ) );
53      ((UntypedExpr*)begin)->get_args().push_back( array->get_dimension()->clone() );
54      ((UntypedExpr*)begin)->get_args().push_back( new NameExpr( "1" ) );
55      end = new NameExpr( "0" );
56      cmp = new NameExpr( "?>=?" );
57      update = new NameExpr( "--?" );
58    }
59
60    ObjectDecl *index = new ObjectDecl( indexName.newName(), DeclarationNode::NoStorageClass, LinkageSpec::C, 0, new BasicType( Type::Qualifiers(), BasicType::SignedInt ), NULL );
61
62    UntypedExpr *init = new UntypedExpr( new NameExpr( "?=?" ) );
63    init->get_args().push_back( new AddressExpr( new VariableExpr( index ) ) );
64    init->get_args().push_back( begin );
65    index->set_init( new SingleInit( init, std::list<Expression*>() ) );
66
67    UntypedExpr *cond = new UntypedExpr( cmp );
68    cond->get_args().push_back( new VariableExpr( index ) );
69    cond->get_args().push_back( end );
70
71    UntypedExpr *inc = new UntypedExpr( update );
72    inc->get_args().push_back( new AddressExpr( new VariableExpr( index ) ) );
73
74    // want to be able to generate assignment, ctor, and dtor generically,
75    // so fname is either ?=?, ?{}, or ^?{}
76    UntypedExpr *fExpr = new UntypedExpr( new NameExpr( fname ) );
77
78    UntypedExpr *dstIndex = new UntypedExpr( new NameExpr( "?+?" ) );
79    dstIndex->get_args().push_back( dstParam );
80    dstIndex->get_args().push_back( new VariableExpr( index ) );
81    fExpr->get_args().push_back( dstIndex );
82
83    // srcParam is NULL for default ctor/dtor
84    if ( srcParam ) {
85      UntypedExpr *srcIndex = new UntypedExpr( new NameExpr( "?[?]" ) );
86      srcIndex->get_args().push_back( srcParam );
87      srcIndex->get_args().push_back( new VariableExpr( index ) );
88      fExpr->get_args().push_back( srcIndex );
89    }
90
91    std::list<Statement *> initList;
92    CompoundStmt * block = new CompoundStmt( noLabels );
93    block->get_kids().push_back( new DeclStmt( noLabels, index ) );
94    block->get_kids().push_back( new ForStmt( noLabels, initList, cond, inc, new ExprStmt( noLabels, fExpr ) ) );
95    *out++ = block;
96  }
97} // namespace SymTab
98#endif // AUTOGEN_H
99
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