[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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| 7 | // CodeGenerator2.cc -- |
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| 8 | // |
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| 9 | // Author : Richard C. Bilson |
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| 10 | // Created On : Mon May 18 07:44:20 2015 |
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| 11 | // Last Modified By : Peter A. Buhr |
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[f38c8d9] | 12 | // Last Modified On : Sun May 24 20:43:16 2015 |
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| 13 | // Update Count : 11 |
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[51587aa] | 14 | // |
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| 15 | |
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[51b7345] | 16 | #include <algorithm> |
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| 17 | #include <iostream> |
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| 18 | #include <cassert> |
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| 19 | #include <list> |
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| 20 | |
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| 21 | #include "SynTree/Type.h" |
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| 22 | #include "SynTree/Declaration.h" |
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| 23 | #include "SynTree/Statement.h" |
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| 24 | #include "SynTree/Expression.h" |
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| 25 | #include "SynTree/Initializer.h" |
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| 26 | |
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| 27 | #include "utility.h" |
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| 28 | #include "UnimplementedError.h" |
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| 29 | |
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| 30 | #include "CodeGenerator2.h" |
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| 31 | #include "OperatorTable.h" |
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| 32 | #include "GenType.h" |
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| 33 | |
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| 34 | using namespace std; |
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| 35 | |
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| 36 | namespace CodeGen { |
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[51587aa] | 37 | int CodeGenerator2::tabsize = 4; |
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| 38 | |
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| 39 | CodeGenerator2::CodeGenerator2( std::ostream &os ) : cur_indent( 0 ), insideFunction( false ), before( os ), after() { } |
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| 40 | |
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| 41 | CodeGenerator2::CodeGenerator2( std::ostream &os, std::string init, int indent, bool infunp ) |
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[f38c8d9] | 42 | : cur_indent( indent ), insideFunction( infunp ), before( os ) { |
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[51587aa] | 43 | //before << std::string( init ); |
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| 44 | } |
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| 45 | |
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| 46 | CodeGenerator2::CodeGenerator2( std::ostream &os, char *init, int indent, bool infunp ) |
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[f38c8d9] | 47 | : cur_indent( indent ), insideFunction( infunp ), before( os ) { |
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[51587aa] | 48 | //before << std::string( init ); |
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| 49 | } |
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| 50 | |
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| 51 | string mangleName( DeclarationWithType *decl ) { |
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| 52 | if ( decl->get_mangleName() != "" ) { |
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| 53 | return decl->get_mangleName(); |
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| 54 | } else { |
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| 55 | return decl->get_name(); |
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| 56 | } // if |
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| 57 | } |
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[51b7345] | 58 | |
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[51587aa] | 59 | //*** Declarations |
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| 60 | void CodeGenerator2::visit( FunctionDecl *functionDecl ) { |
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| 61 | handleStorageClass( functionDecl ); |
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[f38c8d9] | 62 | if ( functionDecl->get_isInline() ) { |
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| 63 | before << "inline "; |
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| 64 | } // if |
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[51587aa] | 65 | before << genType( functionDecl->get_functionType(), mangleName( functionDecl ) ); |
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| 66 | |
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| 67 | // how to get this to the Functype? |
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| 68 | std::list< Declaration * > olds = functionDecl->get_oldDecls(); |
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| 69 | if ( ! olds.empty() ) { |
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| 70 | before << " /* function has old declaration */"; |
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| 71 | } // if |
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| 72 | |
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| 73 | // acceptAll( functionDecl->get_oldDecls(), *this ); |
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| 74 | if ( functionDecl->get_statements() ) { |
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| 75 | functionDecl->get_statements()->accept(*this ); |
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| 76 | } // if |
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| 77 | } |
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| 78 | |
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| 79 | void CodeGenerator2::visit( ObjectDecl *objectDecl ) { |
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| 80 | handleStorageClass( objectDecl ); |
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| 81 | before << genType( objectDecl->get_type(), mangleName( objectDecl ) ); |
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| 82 | |
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| 83 | if ( objectDecl->get_init() ) { |
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| 84 | before << " = "; |
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| 85 | objectDecl->get_init()->accept( *this ); |
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| 86 | } // if |
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| 87 | if ( objectDecl->get_bitfieldWidth() ) { |
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| 88 | before << ":"; |
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| 89 | objectDecl->get_bitfieldWidth()->accept( *this ); |
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| 90 | } // if |
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| 91 | } |
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| 92 | |
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| 93 | void CodeGenerator2::handleAggregate( AggregateDecl *aggDecl ) { |
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| 94 | if ( aggDecl->get_name() != "" ) |
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| 95 | before << aggDecl->get_name(); |
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| 96 | |
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| 97 | std::list< Declaration * > &memb = aggDecl->get_members(); |
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| 98 | |
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| 99 | if ( ! memb.empty() ) { |
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| 100 | before << endl << string( cur_indent, ' ' ) << "{" << endl; |
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| 101 | |
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| 102 | cur_indent += CodeGenerator2::tabsize; |
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| 103 | for ( std::list< Declaration* >::iterator i = memb.begin(); i != memb.end(); i++) { |
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| 104 | before << string( cur_indent, ' ' ); |
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| 105 | (*i)->accept(*this ); |
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| 106 | before << ";" << endl; |
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| 107 | } |
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| 108 | |
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| 109 | cur_indent -= CodeGenerator2::tabsize; |
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| 110 | |
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| 111 | before << string( cur_indent, ' ' ) << "}"; |
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[17cd4eb] | 112 | } // if |
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[51587aa] | 113 | } |
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[17cd4eb] | 114 | |
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[51587aa] | 115 | void CodeGenerator2::visit( StructDecl *structDecl ) { |
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| 116 | before << "struct "; |
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| 117 | handleAggregate( structDecl ); |
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| 118 | } |
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[17cd4eb] | 119 | |
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[51587aa] | 120 | void CodeGenerator2::visit( UnionDecl *aggregateDecl ) { |
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| 121 | before << "union "; |
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| 122 | handleAggregate( aggregateDecl ); |
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| 123 | } |
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[51b7345] | 124 | |
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[51587aa] | 125 | void CodeGenerator2::visit( EnumDecl *aggDecl ) { |
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| 126 | before << "enum "; |
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| 127 | |
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| 128 | if ( aggDecl->get_name() != "" ) |
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| 129 | before << aggDecl->get_name(); |
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| 130 | |
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| 131 | std::list< Declaration* > &memb = aggDecl->get_members(); |
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| 132 | |
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| 133 | if ( ! memb.empty() ) { |
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| 134 | before << endl << "{" << endl; |
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| 135 | |
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| 136 | cur_indent += CodeGenerator2::tabsize; |
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| 137 | for ( std::list< Declaration* >::iterator i = memb.begin(); i != memb.end(); i++) { |
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| 138 | ObjectDecl *obj = dynamic_cast< ObjectDecl* >( *i ); |
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| 139 | assert( obj ); |
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| 140 | before << string( cur_indent, ' ' ) << mangleName( obj ); |
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| 141 | if ( obj->get_init() ) { |
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| 142 | before << " = "; |
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| 143 | obj->get_init()->accept(*this ); |
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| 144 | } // if |
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| 145 | before << "," << endl; |
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| 146 | } // for |
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| 147 | |
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| 148 | cur_indent -= CodeGenerator2::tabsize; |
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| 149 | |
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| 150 | before << "}" << endl; |
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| 151 | } // if |
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| 152 | } |
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[51b7345] | 153 | |
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[51587aa] | 154 | void CodeGenerator2::visit( ContextDecl *aggregateDecl ) {} |
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| 155 | |
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| 156 | void CodeGenerator2::visit( TypedefDecl *typeDecl ) { |
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| 157 | before << "typedef "; |
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| 158 | before << genType( typeDecl->get_base(), typeDecl->get_name() ); |
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| 159 | } |
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[51b7345] | 160 | |
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[51587aa] | 161 | void CodeGenerator2::visit( TypeDecl *typeDecl ) { |
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| 162 | // really, we should mutate this into something that isn't a TypeDecl but that requires large-scale changes, |
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| 163 | // still to be done |
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| 164 | before << "extern unsigned long " << typeDecl->get_name(); |
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| 165 | if ( typeDecl->get_base() ) { |
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| 166 | before << " = sizeof( " << genType( typeDecl->get_base(), "" ) << " )"; |
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| 167 | } // if |
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| 168 | } |
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| 169 | |
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| 170 | void CodeGenerator2::visit( SingleInit *init ) { |
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| 171 | init->get_value()->accept( *this ); |
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| 172 | } |
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| 173 | |
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| 174 | void CodeGenerator2::visit( ListInit *init ) { |
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| 175 | before << "{ "; |
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| 176 | genCommaList( init->begin_initializers(), init->end_initializers() ); |
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| 177 | before << " }"; |
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| 178 | } |
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| 179 | |
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| 180 | void CodeGenerator2::visit( Constant *constant ) { |
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| 181 | before << constant->get_value() ; |
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| 182 | } |
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| 183 | |
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| 184 | //*** Expressions |
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| 185 | void CodeGenerator2::visit( ApplicationExpr *applicationExpr ) { |
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| 186 | if ( VariableExpr *varExpr = dynamic_cast< VariableExpr* >( applicationExpr->get_function() ) ) { |
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| 187 | OperatorInfo opInfo; |
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| 188 | if ( varExpr->get_var()->get_linkage() == LinkageSpec::Intrinsic && operatorLookup( varExpr->get_var()->get_name(), opInfo ) ) { |
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| 189 | std::list< Expression* >::iterator arg = applicationExpr->get_args().begin(); |
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| 190 | switch ( opInfo.type ) { |
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| 191 | case OT_PREFIXASSIGN: |
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| 192 | case OT_POSTFIXASSIGN: |
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| 193 | case OT_INFIXASSIGN: |
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| 194 | { |
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| 195 | assert( arg != applicationExpr->get_args().end() ); |
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| 196 | if ( AddressExpr *addrExpr = dynamic_cast< AddressExpr * >( *arg ) ) { |
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| 197 | |
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| 198 | *arg = addrExpr->get_arg(); |
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| 199 | } else { |
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| 200 | UntypedExpr *newExpr = new UntypedExpr( new NameExpr( "*?" ) ); |
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| 201 | newExpr->get_args().push_back( *arg ); |
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| 202 | *arg = newExpr; |
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| 203 | } // if |
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| 204 | break; |
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| 205 | } |
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| 206 | |
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| 207 | default: |
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| 208 | // do nothing |
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| 209 | ; |
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| 210 | } |
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| 211 | |
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| 212 | switch ( opInfo.type ) { |
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| 213 | case OT_INDEX: |
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| 214 | assert( applicationExpr->get_args().size() == 2 ); |
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| 215 | (*arg++)->accept( *this ); |
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| 216 | before << "["; |
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| 217 | (*arg)->accept( *this ); |
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| 218 | before << "]"; |
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| 219 | break; |
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| 220 | |
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| 221 | case OT_CALL: |
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| 222 | // there are no intrinsic definitions of the function call operator |
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| 223 | assert( false ); |
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| 224 | break; |
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| 225 | |
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| 226 | case OT_PREFIX: |
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| 227 | case OT_PREFIXASSIGN: |
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| 228 | assert( applicationExpr->get_args().size() == 1 ); |
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| 229 | before << "("; |
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| 230 | before << opInfo.symbol; |
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| 231 | (*arg)->accept( *this ); |
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| 232 | before << ")"; |
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| 233 | break; |
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| 234 | |
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| 235 | case OT_POSTFIX: |
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| 236 | case OT_POSTFIXASSIGN: |
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| 237 | assert( applicationExpr->get_args().size() == 1 ); |
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| 238 | (*arg)->accept( *this ); |
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| 239 | before << opInfo.symbol; |
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| 240 | break; |
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| 241 | |
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| 242 | case OT_INFIX: |
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| 243 | case OT_INFIXASSIGN: |
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| 244 | assert( applicationExpr->get_args().size() == 2 ); |
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| 245 | before << "("; |
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| 246 | (*arg++)->accept( *this ); |
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| 247 | before << opInfo.symbol; |
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| 248 | (*arg)->accept( *this ); |
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| 249 | before << ")"; |
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| 250 | break; |
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| 251 | |
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| 252 | case OT_CONSTANT: |
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| 253 | // there are no intrinsic definitions of 0 or 1 as functions |
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| 254 | assert( false ); |
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| 255 | } |
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[17cd4eb] | 256 | } else { |
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[51587aa] | 257 | varExpr->accept( *this ); |
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| 258 | before << "("; |
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| 259 | genCommaList( applicationExpr->get_args().begin(), applicationExpr->get_args().end() ); |
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| 260 | before << ")"; |
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[17cd4eb] | 261 | } // if |
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[51587aa] | 262 | } else { |
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| 263 | applicationExpr->get_function()->accept( *this ); |
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| 264 | before << "("; |
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| 265 | genCommaList( applicationExpr->get_args().begin(), applicationExpr->get_args().end() ); |
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| 266 | before << ")"; |
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| 267 | } // if |
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| 268 | } |
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[51b7345] | 269 | |
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[51587aa] | 270 | void CodeGenerator2::visit( UntypedExpr *untypedExpr ) { |
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| 271 | if ( NameExpr *nameExpr = dynamic_cast< NameExpr* >( untypedExpr->get_function() ) ) { |
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| 272 | OperatorInfo opInfo; |
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| 273 | if ( operatorLookup( nameExpr->get_name(), opInfo ) ) { |
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| 274 | std::list< Expression* >::iterator arg = untypedExpr->get_args().begin(); |
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| 275 | switch ( opInfo.type ) { |
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| 276 | case OT_INDEX: |
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| 277 | assert( untypedExpr->get_args().size() == 2 ); |
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| 278 | (*arg++)->accept( *this ); |
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| 279 | before << "["; |
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| 280 | (*arg)->accept( *this ); |
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| 281 | before << "]"; |
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| 282 | break; |
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| 283 | |
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| 284 | case OT_CALL: |
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| 285 | assert( false ); |
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| 286 | break; |
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| 287 | |
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| 288 | case OT_PREFIX: |
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| 289 | case OT_PREFIXASSIGN: |
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| 290 | assert( untypedExpr->get_args().size() == 1 ); |
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| 291 | before << "("; |
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| 292 | before << opInfo.symbol; |
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| 293 | (*arg)->accept( *this ); |
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| 294 | before << ")"; |
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| 295 | break; |
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| 296 | |
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| 297 | case OT_POSTFIX: |
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| 298 | case OT_POSTFIXASSIGN: |
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| 299 | assert( untypedExpr->get_args().size() == 1 ); |
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| 300 | (*arg)->accept( *this ); |
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| 301 | before << opInfo.symbol; |
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| 302 | break; |
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[51b7345] | 303 | |
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[51587aa] | 304 | case OT_INFIX: |
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| 305 | case OT_INFIXASSIGN: |
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| 306 | assert( untypedExpr->get_args().size() == 2 ); |
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| 307 | before << "("; |
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| 308 | (*arg++)->accept( *this ); |
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| 309 | before << opInfo.symbol; |
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| 310 | (*arg)->accept( *this ); |
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| 311 | before << ")"; |
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| 312 | break; |
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| 313 | |
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| 314 | case OT_CONSTANT: |
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| 315 | // there are no intrinsic definitions of 0 or 1 as functions |
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| 316 | assert( false ); |
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| 317 | } |
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| 318 | } else { |
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| 319 | nameExpr->accept( *this ); |
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| 320 | before << "("; |
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| 321 | genCommaList( untypedExpr->get_args().begin(), untypedExpr->get_args().end() ); |
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| 322 | before << ")"; |
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| 323 | } // if |
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| 324 | } else { |
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| 325 | untypedExpr->get_function()->accept( *this ); |
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| 326 | before << "("; |
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| 327 | genCommaList( untypedExpr->get_args().begin(), untypedExpr->get_args().end() ); |
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| 328 | before << ")"; |
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| 329 | } // if |
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| 330 | } |
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[51b7345] | 331 | |
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[51587aa] | 332 | void CodeGenerator2::visit( NameExpr *nameExpr ) { |
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| 333 | OperatorInfo opInfo; |
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| 334 | if ( operatorLookup( nameExpr->get_name(), opInfo ) ) { |
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| 335 | assert( opInfo.type == OT_CONSTANT ); |
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| 336 | before << opInfo.symbol; |
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| 337 | } else { |
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| 338 | before << nameExpr->get_name(); |
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| 339 | } // if |
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| 340 | } |
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[51b7345] | 341 | |
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[51587aa] | 342 | void CodeGenerator2::visit( AddressExpr *addressExpr ) { |
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| 343 | before << "(&"; |
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| 344 | // this hack makes sure that we don't convert "constant_zero" to "0" if we're taking its address |
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| 345 | if ( VariableExpr *variableExpr = dynamic_cast< VariableExpr* >( addressExpr->get_arg() ) ) { |
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| 346 | before << mangleName( variableExpr->get_var() ); |
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| 347 | } else { |
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| 348 | addressExpr->get_arg()->accept( *this ); |
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| 349 | } // if |
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| 350 | before << ")"; |
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| 351 | } |
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| 352 | |
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| 353 | void CodeGenerator2::visit( CastExpr *castExpr ) { |
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| 354 | before << "(("; |
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| 355 | if ( castExpr->get_results().empty() ) { |
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| 356 | before << "void" ; |
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| 357 | } else { |
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| 358 | before << genType( castExpr->get_results().front(), "" ); |
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| 359 | } // if |
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| 360 | before << ")"; |
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| 361 | castExpr->get_arg()->accept( *this ); |
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| 362 | before << ")"; |
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| 363 | } |
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[51b7345] | 364 | |
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[51587aa] | 365 | void CodeGenerator2::visit( UntypedMemberExpr *memberExpr ) { |
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| 366 | assert( false ); |
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| 367 | } |
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[51b7345] | 368 | |
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[51587aa] | 369 | void CodeGenerator2::visit( MemberExpr *memberExpr ) { |
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| 370 | memberExpr->get_aggregate()->accept( *this ); |
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| 371 | before << "." << mangleName( memberExpr->get_member() ); |
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| 372 | } |
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[51b7345] | 373 | |
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[51587aa] | 374 | void CodeGenerator2::visit( VariableExpr *variableExpr ) { |
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| 375 | OperatorInfo opInfo; |
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| 376 | if ( variableExpr->get_var()->get_linkage() == LinkageSpec::Intrinsic && operatorLookup( variableExpr->get_var()->get_name(), opInfo ) && opInfo.type == OT_CONSTANT ) { |
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| 377 | before << opInfo.symbol; |
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| 378 | } else { |
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| 379 | before << mangleName( variableExpr->get_var() ); |
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| 380 | } // if |
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| 381 | } |
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[51b7345] | 382 | |
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[51587aa] | 383 | void CodeGenerator2::visit( ConstantExpr *constantExpr ) { |
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| 384 | assert( constantExpr->get_constant() ); |
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| 385 | constantExpr->get_constant()->accept( *this ); |
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| 386 | } |
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[51b7345] | 387 | |
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[51587aa] | 388 | void CodeGenerator2::visit( SizeofExpr *sizeofExpr ) { |
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| 389 | before << "sizeof("; |
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| 390 | if ( sizeofExpr->get_isType() ) { |
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| 391 | before << genType( sizeofExpr->get_type(), "" ); |
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| 392 | } else { |
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| 393 | sizeofExpr->get_expr()->accept( *this ); |
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| 394 | } // if |
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| 395 | before << ")"; |
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| 396 | } |
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[51b7345] | 397 | |
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[51587aa] | 398 | void CodeGenerator2::visit( LogicalExpr *logicalExpr ) { |
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| 399 | before << "("; |
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| 400 | logicalExpr->get_arg1()->accept( *this ); |
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| 401 | if ( logicalExpr->get_isAnd() ) { |
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| 402 | before << " && "; |
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| 403 | } else { |
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| 404 | before << " || "; |
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| 405 | } // if |
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| 406 | logicalExpr->get_arg2()->accept( *this ); |
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| 407 | before << ")"; |
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| 408 | } |
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[51b7345] | 409 | |
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[51587aa] | 410 | void CodeGenerator2::visit( ConditionalExpr *conditionalExpr ) { |
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| 411 | before << "("; |
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| 412 | conditionalExpr->get_arg1()->accept( *this ); |
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| 413 | before << " ? "; |
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| 414 | conditionalExpr->get_arg2()->accept( *this ); |
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| 415 | before << " : "; |
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| 416 | conditionalExpr->get_arg3()->accept( *this ); |
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| 417 | before << ")"; |
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| 418 | } |
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[51b7345] | 419 | |
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[51587aa] | 420 | void CodeGenerator2::visit( CommaExpr *commaExpr ) { |
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| 421 | before << "("; |
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| 422 | commaExpr->get_arg1()->accept( *this ); |
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| 423 | before << " , "; |
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| 424 | commaExpr->get_arg2()->accept( *this ); |
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| 425 | before << ")"; |
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| 426 | } |
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[51b7345] | 427 | |
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[51587aa] | 428 | void CodeGenerator2::visit( TupleExpr *tupleExpr ) {} |
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[51b7345] | 429 | |
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[51587aa] | 430 | void CodeGenerator2::visit( TypeExpr *typeExpr ) {} |
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[51b7345] | 431 | |
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| 432 | |
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[51587aa] | 433 | //*** Statements |
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| 434 | void CodeGenerator2::visit( CompoundStmt *compoundStmt ) { |
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| 435 | std::list<Statement*> ks = compoundStmt->get_kids(); |
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| 436 | |
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| 437 | before << endl << string( cur_indent, ' ' ) << "{" << endl; |
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| 438 | |
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| 439 | cur_indent += CodeGenerator2::tabsize; |
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| 440 | |
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| 441 | for ( std::list<Statement *>::iterator i = ks.begin(); i != ks.end(); i++) { |
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| 442 | before << string( cur_indent, ' ' ) << printLabels( (*i)->get_labels() ) ; |
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| 443 | (*i)->accept(*this ); |
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| 444 | shift_left(); |
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| 445 | before << endl; |
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| 446 | } |
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| 447 | cur_indent -= CodeGenerator2::tabsize; |
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| 448 | |
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| 449 | before << string( cur_indent, ' ' ) << "}" << endl; |
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| 450 | } |
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| 451 | |
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| 452 | void CodeGenerator2::visit( ExprStmt *exprStmt ) { |
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| 453 | if ( exprStmt != 0 ) { |
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| 454 | exprStmt->get_expr()->accept( *this ); |
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| 455 | shift_left(); |
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| 456 | before << ";" ; |
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| 457 | } // if |
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| 458 | } |
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| 459 | |
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| 460 | void CodeGenerator2::visit( IfStmt *ifStmt ) { |
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| 461 | before << "if ("; |
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| 462 | ifStmt->get_condition()->accept(*this ); |
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| 463 | after += ")\n"; |
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| 464 | shift_left(); |
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| 465 | |
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| 466 | cur_indent += CodeGenerator2::tabsize; |
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| 467 | before << string( cur_indent, ' ' ); |
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| 468 | ifStmt->get_thenPart()->accept(*this ); |
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| 469 | cur_indent -= CodeGenerator2::tabsize; |
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| 470 | shift_left(); before << endl; |
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| 471 | |
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| 472 | if ( ifStmt->get_elsePart() != 0) { |
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| 473 | before << string( cur_indent, ' ' ) << " else " << endl ; |
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| 474 | |
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| 475 | cur_indent += CodeGenerator2::tabsize; |
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| 476 | ifStmt->get_elsePart()->accept(*this ); |
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| 477 | cur_indent -= CodeGenerator2::tabsize; |
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| 478 | } // if |
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| 479 | } |
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| 480 | |
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| 481 | void CodeGenerator2::visit( SwitchStmt *switchStmt ) { |
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| 482 | //before << /* "\r" << */ string( cur_indent, ' ' ) << CodeGenerator2::printLabels( switchStmt->get_labels() ) |
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| 483 | before << "switch (" ; |
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| 484 | switchStmt->get_condition()->accept(*this ); |
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| 485 | after += ")\n"; |
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| 486 | shift_left(); |
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| 487 | |
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| 488 | before << string( cur_indent, ' ' ) << "{" << std::endl; |
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| 489 | cur_indent += CodeGenerator2::tabsize; |
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| 490 | |
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| 491 | std::list< Statement * > stmts = switchStmt->get_branches(); |
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| 492 | bool lastBreak = false; |
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| 493 | |
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| 494 | // horrible, horrible hack |
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| 495 | if ( dynamic_cast<BranchStmt *>( stmts.back() ) != 0 ) { |
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| 496 | lastBreak = true; |
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| 497 | stmts.pop_back(); |
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| 498 | } // if |
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| 499 | acceptAll( stmts, *this ); |
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| 500 | if ( lastBreak ) { |
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| 501 | Statement *st = switchStmt->get_branches().back(); |
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| 502 | before << CodeGenerator2::printLabels( st->get_labels()); |
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| 503 | st->accept( *this ); |
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| 504 | } // if |
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| 505 | |
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| 506 | cur_indent -= CodeGenerator2::tabsize; |
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| 507 | |
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| 508 | before << /* "\r" << */ string( cur_indent, ' ' ) << "}" << endl ; |
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| 509 | } |
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| 510 | |
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| 511 | void CodeGenerator2::visit( CaseStmt *caseStmt ) { |
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| 512 | before << string( cur_indent, ' ' ); |
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| 513 | if ( caseStmt->isDefault()) |
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| 514 | before << "default " ; |
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| 515 | else { |
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| 516 | before << "case " ; |
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| 517 | caseStmt->get_condition()->accept(*this ); |
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[17cd4eb] | 518 | } // if |
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[51587aa] | 519 | after += ":\n"; |
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| 520 | shift_left(); |
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| 521 | |
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| 522 | std::list<Statement *> sts = caseStmt->get_statements(); |
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| 523 | |
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| 524 | cur_indent += CodeGenerator2::tabsize; |
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| 525 | for ( std::list<Statement *>::iterator i = sts.begin(); i != sts.end(); i++) { |
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| 526 | before << /* "\r" << */ string( cur_indent, ' ' ) << printLabels( (*i)->get_labels() ) ; |
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| 527 | (*i)->accept(*this ); |
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| 528 | shift_left(); |
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| 529 | before << ";" << endl; |
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| 530 | } |
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| 531 | cur_indent -= CodeGenerator2::tabsize; |
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| 532 | } |
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| 533 | |
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| 534 | void CodeGenerator2::visit( BranchStmt *branchStmt ) { |
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| 535 | switch ( branchStmt->get_type()) { |
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| 536 | case BranchStmt::Goto: |
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| 537 | if ( ! branchStmt->get_target().empty() ) |
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| 538 | before << "goto " << branchStmt->get_target(); |
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| 539 | else { |
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| 540 | if ( branchStmt->get_computedTarget() != 0 ) { |
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| 541 | before << "goto *"; |
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| 542 | branchStmt->get_computedTarget()->accept( *this ); |
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| 543 | } // if |
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| 544 | } // if |
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| 545 | break; |
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| 546 | case BranchStmt::Break: |
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| 547 | before << "break"; |
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| 548 | break; |
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| 549 | case BranchStmt::Continue: |
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| 550 | before << "continue"; |
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| 551 | break; |
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| 552 | } |
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| 553 | before << ";"; |
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| 554 | } |
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| 555 | |
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| 556 | |
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| 557 | void CodeGenerator2::visit( ReturnStmt *returnStmt ) { |
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| 558 | before << "return "; |
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| 559 | |
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| 560 | // xxx -- check for null expression; |
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| 561 | if ( returnStmt->get_expr() ) { |
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| 562 | returnStmt->get_expr()->accept( *this ); |
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| 563 | } // if |
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| 564 | after += ";"; |
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| 565 | } |
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| 566 | |
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| 567 | void CodeGenerator2::visit( WhileStmt *whileStmt ) { |
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| 568 | if ( whileStmt->get_isDoWhile() ) |
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| 569 | before << "do" ; |
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| 570 | else { |
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| 571 | before << "while (" ; |
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| 572 | whileStmt->get_condition()->accept(*this ); |
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| 573 | after += ")"; |
---|
| 574 | } // if |
---|
| 575 | after += "{\n"; |
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| 576 | shift_left(); |
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| 577 | |
---|
| 578 | whileStmt->get_body()->accept( *this ); |
---|
| 579 | |
---|
| 580 | before << /* "\r" << */ string( cur_indent, ' ' ) << "}" ; |
---|
| 581 | |
---|
| 582 | if ( whileStmt->get_isDoWhile() ) { |
---|
| 583 | before << " while (" ; |
---|
| 584 | whileStmt->get_condition()->accept(*this ); |
---|
| 585 | after += ");"; |
---|
| 586 | } // if |
---|
| 587 | |
---|
| 588 | after += "\n"; |
---|
| 589 | } |
---|
| 590 | |
---|
| 591 | void CodeGenerator2::visit( ForStmt *forStmt ) { |
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| 592 | before << "for ("; |
---|
| 593 | |
---|
| 594 | if ( forStmt->get_initialization() != 0 ) |
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| 595 | forStmt->get_initialization()->accept( *this ); |
---|
| 596 | else |
---|
| 597 | before << ";"; |
---|
| 598 | shift_left(); |
---|
| 599 | |
---|
| 600 | if ( forStmt->get_condition() != 0 ) |
---|
| 601 | forStmt->get_condition()->accept( *this ); |
---|
| 602 | shift_left(); before << ";"; |
---|
| 603 | |
---|
| 604 | if ( forStmt->get_increment() != 0 ) |
---|
| 605 | forStmt->get_increment()->accept( *this ); |
---|
| 606 | shift_left(); before << ")" << endl; |
---|
| 607 | |
---|
| 608 | if ( forStmt->get_body() != 0 ) { |
---|
| 609 | cur_indent += CodeGenerator2::tabsize; |
---|
| 610 | before << string( cur_indent, ' ' ) << CodeGenerator2::printLabels( forStmt->get_body()->get_labels() ); |
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| 611 | forStmt->get_body()->accept( *this ); |
---|
| 612 | cur_indent -= CodeGenerator2::tabsize; |
---|
| 613 | } // if |
---|
| 614 | } |
---|
| 615 | |
---|
| 616 | void CodeGenerator2::visit( NullStmt *nullStmt ) { |
---|
| 617 | //before << /* "\r" << */ string( cur_indent, ' ' ) << CodeGenerator2::printLabels( nullStmt->get_labels() ); |
---|
| 618 | before << "/* null statement */ ;"; |
---|
| 619 | } |
---|
| 620 | |
---|
| 621 | void CodeGenerator2::visit( DeclStmt *declStmt ) { |
---|
| 622 | declStmt->get_decl()->accept( *this ); |
---|
| 623 | |
---|
| 624 | if ( doSemicolon( declStmt->get_decl() ) ) { |
---|
| 625 | after += ";"; |
---|
| 626 | } // if |
---|
| 627 | shift_left(); |
---|
| 628 | } |
---|
| 629 | |
---|
| 630 | std::string CodeGenerator2::printLabels( std::list< Label > &l ) { |
---|
| 631 | std::string str( "" ); |
---|
| 632 | l.unique(); |
---|
| 633 | |
---|
| 634 | for ( std::list< Label >::iterator i = l.begin(); i != l.end(); i++ ) |
---|
| 635 | str += *i + ": "; |
---|
| 636 | |
---|
| 637 | return str; |
---|
| 638 | } |
---|
| 639 | |
---|
| 640 | void CodeGenerator2::shift_left() { |
---|
| 641 | before << after; |
---|
| 642 | after = ""; |
---|
| 643 | } |
---|
| 644 | |
---|
| 645 | void CodeGenerator2::handleStorageClass( Declaration *decl ) { |
---|
| 646 | switch ( decl->get_storageClass() ) { |
---|
| 647 | case Declaration::NoStorageClass: |
---|
| 648 | break; |
---|
| 649 | case Declaration::Extern: |
---|
| 650 | before << "extern "; |
---|
| 651 | break; |
---|
| 652 | case Declaration::Static: |
---|
| 653 | before << "static "; |
---|
| 654 | break; |
---|
| 655 | case Declaration::Auto: |
---|
| 656 | // silently drop storage class |
---|
| 657 | break; |
---|
| 658 | case Declaration::Register: |
---|
| 659 | before << "register "; |
---|
| 660 | break; |
---|
[f38c8d9] | 661 | case Declaration::Inline: |
---|
| 662 | // handled as special via isInline flag (FIX) |
---|
| 663 | break; |
---|
| 664 | case Declaration::Fortran: |
---|
| 665 | // not handled |
---|
| 666 | break; |
---|
[843054c2] | 667 | } // switch |
---|
[51587aa] | 668 | } |
---|
[51b7345] | 669 | } // namespace CodeGen |
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[51587aa] | 670 | |
---|
| 671 | // Local Variables: // |
---|
| 672 | // tab-width: 4 // |
---|
| 673 | // mode: c++ // |
---|
| 674 | // compile-command: "make install" // |
---|
| 675 | // End: // |
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