[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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[71f4e4f] | 7 | // CodeGenerator.cc -- |
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[51587aa] | 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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[8688ce1] | 11 | // Last Modified By : Peter A. Buhr |
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[064e3ff] | 12 | // Last Modified On : Thu Aug 4 13:35:30 2016 |
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| 13 | // Update Count : 352 |
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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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[68cd1ce] | 21 | #include "Parser/ParseNode.h" |
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| 22 | |
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[e8032b0] | 23 | #include "SynTree/Declaration.h" |
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[51b7345] | 24 | #include "SynTree/Expression.h" |
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| 25 | #include "SynTree/Initializer.h" |
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[68cd1ce] | 26 | #include "SynTree/Statement.h" |
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[e8032b0] | 27 | #include "SynTree/Type.h" |
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[7baed7d] | 28 | #include "SynTree/Attribute.h" |
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[51b7345] | 29 | |
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[d3b7937] | 30 | #include "Common/utility.h" |
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| 31 | #include "Common/UnimplementedError.h" |
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[51b7345] | 32 | |
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[a61fea9a] | 33 | #include "CodeGenerator.h" |
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[51b7345] | 34 | #include "OperatorTable.h" |
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| 35 | #include "GenType.h" |
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| 36 | |
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[10a7775] | 37 | #include "InitTweak/InitTweak.h" |
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| 38 | |
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[51b7345] | 39 | using namespace std; |
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| 40 | |
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| 41 | namespace CodeGen { |
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[6c4ff37] | 42 | int CodeGenerator::tabsize = 4; |
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[51587aa] | 43 | |
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[145f1fc] | 44 | // the kinds of statements that would ideally be followed by whitespace |
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[2b6c1e0] | 45 | bool wantSpacing( Statement * stmt) { |
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| 46 | return dynamic_cast< IfStmt * >( stmt ) || dynamic_cast< CompoundStmt * >( stmt ) || |
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[08061589] | 47 | dynamic_cast< WhileStmt * >( stmt ) || dynamic_cast< ForStmt * >( stmt ) || dynamic_cast< SwitchStmt *>( stmt ); |
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[2b6c1e0] | 48 | } |
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| 49 | |
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[8688ce1] | 50 | void CodeGenerator::extension( Expression * expr ) { |
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[8e9cbb2] | 51 | if ( expr->get_extension() ) { |
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| 52 | output << "__extension__ "; |
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| 53 | } // if |
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| 54 | } // extension |
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| 55 | |
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[8688ce1] | 56 | void CodeGenerator::extension( Declaration * decl ) { |
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[8e9cbb2] | 57 | if ( decl->get_extension() ) { |
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| 58 | output << "__extension__ "; |
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| 59 | } // if |
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| 60 | } // extension |
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| 61 | |
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[888cbe4] | 62 | ostream & CodeGenerator::Indenter::operator()( ostream & output ) const { |
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[cda48b6] | 63 | return output << string( cg.cur_indent, ' ' ); |
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| 64 | } |
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| 65 | |
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[888cbe4] | 66 | ostream & operator<<( ostream & output, const CodeGenerator::Indenter &indent ) { |
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[cda48b6] | 67 | return indent( output ); |
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| 68 | } |
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[51587aa] | 69 | |
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[888cbe4] | 70 | CodeGenerator::LabelPrinter & CodeGenerator::LabelPrinter::operator()( std::list< Label > & l ) { |
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| 71 | labels = &l; |
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| 72 | return *this; |
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| 73 | } |
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| 74 | |
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[8688ce1] | 75 | ostream & operator<<( ostream & output, CodeGenerator::LabelPrinter & printLabels ) { |
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[888cbe4] | 76 | std::list< Label > & labs = *printLabels.labels; |
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| 77 | // l.unique(); // assumes a sorted list. Why not use set? Does order matter? |
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| 78 | for ( Label & l : labs ) { |
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| 79 | output << l.get_name() + ": "; |
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| 80 | printLabels.cg.genAttributes( l.get_attributes() ); |
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[8688ce1] | 81 | } // for |
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[888cbe4] | 82 | return output; |
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| 83 | } |
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| 84 | |
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[486341f] | 85 | CodeGenerator::CodeGenerator( std::ostream & os, bool mangle ) : indent( *this), cur_indent( 0 ), insideFunction( false ), output( os ), printLabels( *this ), mangle( mangle ) {} |
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[cda48b6] | 86 | |
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[8688ce1] | 87 | CodeGenerator::CodeGenerator( std::ostream & os, std::string init, int indentation, bool infunp ) |
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[888cbe4] | 88 | : indent( *this), cur_indent( indentation ), insideFunction( infunp ), output( os ), printLabels( *this ) { |
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[6c4ff37] | 89 | //output << std::string( init ); |
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[51587aa] | 90 | } |
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| 91 | |
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[8688ce1] | 92 | CodeGenerator::CodeGenerator( std::ostream & os, char * init, int indentation, bool infunp ) |
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[888cbe4] | 93 | : indent( *this ), cur_indent( indentation ), insideFunction( infunp ), output( os ), printLabels( *this ) { |
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[6c4ff37] | 94 | //output << std::string( init ); |
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[51587aa] | 95 | } |
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| 96 | |
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[486341f] | 97 | string CodeGenerator::mangleName( DeclarationWithType * decl ) { |
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| 98 | if ( ! mangle ) return decl->get_name(); |
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[51587aa] | 99 | if ( decl->get_mangleName() != "" ) { |
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[f326f99] | 100 | // need to incorporate scope level in order to differentiate names for destructors |
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| 101 | return decl->get_scopedMangleName(); |
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[51587aa] | 102 | } else { |
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| 103 | return decl->get_name(); |
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| 104 | } // if |
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| 105 | } |
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[94b4364] | 106 | |
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[7baed7d] | 107 | void CodeGenerator::genAttributes( std::list< Attribute * > & attributes ) { |
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| 108 | if ( ! attributes.empty() ) { |
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| 109 | output << "__attribute__ (("; |
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| 110 | for ( Attribute *& attr : attributes ) { |
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| 111 | if ( ! attr->empty() ) { |
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| 112 | output << attr->get_name() << "("; |
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| 113 | genCommaList( attr->get_parameters().begin(), attr->get_parameters().end() ); |
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| 114 | output << ")"; |
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[8688ce1] | 115 | } // if |
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[7baed7d] | 116 | output << ","; |
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[8688ce1] | 117 | } // for |
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[7baed7d] | 118 | output << ")) "; |
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[8688ce1] | 119 | } // if |
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[7baed7d] | 120 | } |
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| 121 | |
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| 122 | |
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| 123 | //*** Declarations |
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[8688ce1] | 124 | void CodeGenerator::visit( FunctionDecl * functionDecl ) { |
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[8e9cbb2] | 125 | extension( functionDecl ); |
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[7baed7d] | 126 | genAttributes( functionDecl->get_attributes() ); |
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| 127 | |
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[51587aa] | 128 | handleStorageClass( functionDecl ); |
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[f38c8d9] | 129 | if ( functionDecl->get_isInline() ) { |
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[6c4ff37] | 130 | output << "inline "; |
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[f38c8d9] | 131 | } // if |
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[de62360d] | 132 | if ( functionDecl->get_isNoreturn() ) { |
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| 133 | output << "_Noreturn "; |
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| 134 | } // if |
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[6c4ff37] | 135 | output << genType( functionDecl->get_functionType(), mangleName( functionDecl ) ); |
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[51587aa] | 136 | |
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| 137 | // how to get this to the Functype? |
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| 138 | std::list< Declaration * > olds = functionDecl->get_oldDecls(); |
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| 139 | if ( ! olds.empty() ) { |
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[6c4ff37] | 140 | output << " /* function has old declaration */"; |
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[51587aa] | 141 | } // if |
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| 142 | |
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| 143 | // acceptAll( functionDecl->get_oldDecls(), *this ); |
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| 144 | if ( functionDecl->get_statements() ) { |
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[7f5566b] | 145 | functionDecl->get_statements()->accept( *this ); |
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[51587aa] | 146 | } // if |
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| 147 | } |
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| 148 | |
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[8688ce1] | 149 | void CodeGenerator::visit( ObjectDecl * objectDecl ) { |
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[8e9cbb2] | 150 | extension( objectDecl ); |
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[f9cebb5] | 151 | genAttributes( objectDecl->get_attributes() ); |
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| 152 | |
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[51587aa] | 153 | handleStorageClass( objectDecl ); |
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[6c4ff37] | 154 | output << genType( objectDecl->get_type(), mangleName( objectDecl ) ); |
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[71f4e4f] | 155 | |
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[51587aa] | 156 | if ( objectDecl->get_init() ) { |
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[6c4ff37] | 157 | output << " = "; |
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[51587aa] | 158 | objectDecl->get_init()->accept( *this ); |
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| 159 | } // if |
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[3778cb2] | 160 | |
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[51587aa] | 161 | if ( objectDecl->get_bitfieldWidth() ) { |
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[6c4ff37] | 162 | output << ":"; |
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[51587aa] | 163 | objectDecl->get_bitfieldWidth()->accept( *this ); |
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| 164 | } // if |
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| 165 | } |
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| 166 | |
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[8688ce1] | 167 | void CodeGenerator::handleAggregate( AggregateDecl * aggDecl ) { |
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[51587aa] | 168 | if ( aggDecl->get_name() != "" ) |
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[6c4ff37] | 169 | output << aggDecl->get_name(); |
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[71f4e4f] | 170 | |
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[8688ce1] | 171 | std::list< Declaration * > & memb = aggDecl->get_members(); |
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[51587aa] | 172 | if ( ! memb.empty() ) { |
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[5d125e4] | 173 | // if ( aggDecl->has_body() ) { |
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[8688ce1] | 174 | // std::list< Declaration * > & memb = aggDecl->get_members(); |
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[94b4364] | 175 | output << " {" << endl; |
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[51587aa] | 176 | |
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[71f4e4f] | 177 | cur_indent += CodeGenerator::tabsize; |
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[3778cb2] | 178 | for ( std::list< Declaration* >::iterator i = memb.begin(); i != memb.end(); i++ ) { |
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[71f4e4f] | 179 | output << indent; |
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[7f5566b] | 180 | (*i)->accept( *this ); |
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[6c4ff37] | 181 | output << ";" << endl; |
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[3778cb2] | 182 | } // for |
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[51587aa] | 183 | |
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[71f4e4f] | 184 | cur_indent -= CodeGenerator::tabsize; |
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[51587aa] | 185 | |
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[cda48b6] | 186 | output << indent << "}"; |
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[17cd4eb] | 187 | } // if |
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[51587aa] | 188 | } |
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[17cd4eb] | 189 | |
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[8688ce1] | 190 | void CodeGenerator::visit( StructDecl * structDecl ) { |
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[8e9cbb2] | 191 | extension( structDecl ); |
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[6c4ff37] | 192 | output << "struct "; |
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[51587aa] | 193 | handleAggregate( structDecl ); |
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| 194 | } |
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[17cd4eb] | 195 | |
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[8688ce1] | 196 | void CodeGenerator::visit( UnionDecl * unionDecl ) { |
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[8e9cbb2] | 197 | extension( unionDecl ); |
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[6c4ff37] | 198 | output << "union "; |
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[8e9cbb2] | 199 | handleAggregate( unionDecl ); |
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[51587aa] | 200 | } |
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[71f4e4f] | 201 | |
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[8688ce1] | 202 | void CodeGenerator::visit( EnumDecl * enumDecl ) { |
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[8e9cbb2] | 203 | extension( enumDecl ); |
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[6c4ff37] | 204 | output << "enum "; |
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[51587aa] | 205 | |
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[8e9cbb2] | 206 | if ( enumDecl->get_name() != "" ) |
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| 207 | output << enumDecl->get_name(); |
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[71f4e4f] | 208 | |
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[8e9cbb2] | 209 | std::list< Declaration* > &memb = enumDecl->get_members(); |
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[51587aa] | 210 | |
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| 211 | if ( ! memb.empty() ) { |
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[cda48b6] | 212 | output << " {" << endl; |
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[51587aa] | 213 | |
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[71f4e4f] | 214 | cur_indent += CodeGenerator::tabsize; |
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[51587aa] | 215 | for ( std::list< Declaration* >::iterator i = memb.begin(); i != memb.end(); i++) { |
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[8688ce1] | 216 | ObjectDecl * obj = dynamic_cast< ObjectDecl* >( *i ); |
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[51587aa] | 217 | assert( obj ); |
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[71f4e4f] | 218 | output << indent << mangleName( obj ); |
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[51587aa] | 219 | if ( obj->get_init() ) { |
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[6c4ff37] | 220 | output << " = "; |
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[7f5566b] | 221 | obj->get_init()->accept( *this ); |
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[51587aa] | 222 | } // if |
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[6c4ff37] | 223 | output << "," << endl; |
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[51587aa] | 224 | } // for |
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| 225 | |
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[71f4e4f] | 226 | cur_indent -= CodeGenerator::tabsize; |
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[51587aa] | 227 | |
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[cda48b6] | 228 | output << indent << "}"; |
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[51587aa] | 229 | } // if |
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| 230 | } |
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[71f4e4f] | 231 | |
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[8688ce1] | 232 | void CodeGenerator::visit( TraitDecl * traitDecl ) {} |
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[71f4e4f] | 233 | |
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[8688ce1] | 234 | void CodeGenerator::visit( TypedefDecl * typeDecl ) { |
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[8e9cbb2] | 235 | assert( false && "Typedefs are removed and substituted in earlier passes." ); |
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| 236 | //output << "typedef "; |
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| 237 | //output << genType( typeDecl->get_base(), typeDecl->get_name() ); |
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[51587aa] | 238 | } |
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[71f4e4f] | 239 | |
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[8688ce1] | 240 | void CodeGenerator::visit( TypeDecl * typeDecl ) { |
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[51587aa] | 241 | // really, we should mutate this into something that isn't a TypeDecl but that requires large-scale changes, |
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| 242 | // still to be done |
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[8e9cbb2] | 243 | extension( typeDecl ); |
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[6c4ff37] | 244 | output << "extern unsigned long " << typeDecl->get_name(); |
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[51587aa] | 245 | if ( typeDecl->get_base() ) { |
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[6c4ff37] | 246 | output << " = sizeof( " << genType( typeDecl->get_base(), "" ) << " )"; |
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[51587aa] | 247 | } // if |
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| 248 | } |
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| 249 | |
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[e45215c] | 250 | void CodeGenerator::printDesignators( std::list< Expression * > & designators ) { |
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| 251 | typedef std::list< Expression * > DesignatorList; |
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| 252 | if ( designators.size() == 0 ) return; |
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| 253 | for ( DesignatorList::iterator iter = designators.begin(); iter != designators.end(); ++iter ) { |
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[8a4da06] | 254 | if ( dynamic_cast< NameExpr * >( *iter ) ) { |
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[f32c7f4] | 255 | // if expression is a name, then initializing aggregate member |
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| 256 | output << "."; |
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| 257 | (*iter)->accept( *this ); |
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| 258 | } else { |
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| 259 | // if not a simple name, it has to be a constant expression, i.e. an array designator |
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[e45215c] | 260 | output << "["; |
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| 261 | (*iter)->accept( *this ); |
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| 262 | output << "]"; |
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[3778cb2] | 263 | } // if |
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| 264 | } // for |
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[e45215c] | 265 | output << " = "; |
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| 266 | } |
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| 267 | |
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[8688ce1] | 268 | void CodeGenerator::visit( SingleInit * init ) { |
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[e45215c] | 269 | printDesignators( init->get_designators() ); |
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[51587aa] | 270 | init->get_value()->accept( *this ); |
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| 271 | } |
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| 272 | |
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[8688ce1] | 273 | void CodeGenerator::visit( ListInit * init ) { |
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[e45215c] | 274 | printDesignators( init->get_designators() ); |
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[6c4ff37] | 275 | output << "{ "; |
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[4d2434a] | 276 | if ( init->begin() == init->end() ) { |
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[8e9cbb2] | 277 | // illegal to leave initializer list empty for scalar initializers, but always legal to have 0 |
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[5b40f30] | 278 | output << "0"; |
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| 279 | } else { |
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[4d2434a] | 280 | genCommaList( init->begin(), init->end() ); |
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[8688ce1] | 281 | } // if |
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[6c4ff37] | 282 | output << " }"; |
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[51587aa] | 283 | } |
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| 284 | |
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[8688ce1] | 285 | void CodeGenerator::visit( Constant * constant ) { |
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[6c4ff37] | 286 | output << constant->get_value() ; |
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[51587aa] | 287 | } |
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| 288 | |
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| 289 | //*** Expressions |
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[8688ce1] | 290 | void CodeGenerator::visit( ApplicationExpr * applicationExpr ) { |
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[e04ef3a] | 291 | extension( applicationExpr ); |
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[8688ce1] | 292 | if ( VariableExpr * varExpr = dynamic_cast< VariableExpr* >( applicationExpr->get_function() ) ) { |
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[51587aa] | 293 | OperatorInfo opInfo; |
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| 294 | if ( varExpr->get_var()->get_linkage() == LinkageSpec::Intrinsic && operatorLookup( varExpr->get_var()->get_name(), opInfo ) ) { |
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| 295 | std::list< Expression* >::iterator arg = applicationExpr->get_args().begin(); |
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| 296 | switch ( opInfo.type ) { |
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| 297 | case OT_PREFIXASSIGN: |
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| 298 | case OT_POSTFIXASSIGN: |
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| 299 | case OT_INFIXASSIGN: |
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[356189a] | 300 | case OT_CTOR: |
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[c2ce2350] | 301 | case OT_DTOR: |
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[51587aa] | 302 | { |
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| 303 | assert( arg != applicationExpr->get_args().end() ); |
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[8688ce1] | 304 | if ( AddressExpr * addrExpr = dynamic_cast< AddressExpr * >( *arg ) ) { |
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[356189a] | 305 | // remove & from first assignment/ctor argument |
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[51587aa] | 306 | *arg = addrExpr->get_arg(); |
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| 307 | } else { |
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[356189a] | 308 | // no address-of operator, so must be a pointer - add dereference |
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[066d77a] | 309 | // NOTE: if the assertion starts to trigger, check that the application expr isn't being shared. |
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| 310 | // Since its arguments are modified here, this assertion most commonly triggers when the application |
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| 311 | // is visited multiple times. |
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[8688ce1] | 312 | UntypedExpr * newExpr = new UntypedExpr( new NameExpr( "*?" ) ); |
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[51587aa] | 313 | newExpr->get_args().push_back( *arg ); |
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[906e24d] | 314 | Type * type = InitTweak::getPointerBase( (*arg)->get_result() ); |
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[066d77a] | 315 | assertf( type, "First argument to a derefence must be a pointer. Ensure that expressions are not being shared." ); |
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[906e24d] | 316 | newExpr->set_result( type->clone() ); |
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[51587aa] | 317 | *arg = newExpr; |
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| 318 | } // if |
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| 319 | break; |
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| 320 | } |
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[71f4e4f] | 321 | |
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[51587aa] | 322 | default: |
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| 323 | // do nothing |
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| 324 | ; |
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[3778cb2] | 325 | } // switch |
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[71f4e4f] | 326 | |
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[51587aa] | 327 | switch ( opInfo.type ) { |
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| 328 | case OT_INDEX: |
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| 329 | assert( applicationExpr->get_args().size() == 2 ); |
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| 330 | (*arg++)->accept( *this ); |
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[6c4ff37] | 331 | output << "["; |
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[51587aa] | 332 | (*arg)->accept( *this ); |
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[6c4ff37] | 333 | output << "]"; |
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[51587aa] | 334 | break; |
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[71f4e4f] | 335 | |
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[51587aa] | 336 | case OT_CALL: |
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[356189a] | 337 | // there are no intrinsic definitions of the function call operator |
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[51587aa] | 338 | assert( false ); |
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| 339 | break; |
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[71f4e4f] | 340 | |
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[f1e012b] | 341 | case OT_CTOR: |
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[c2ce2350] | 342 | case OT_DTOR: |
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[356189a] | 343 | if ( applicationExpr->get_args().size() == 1 ) { |
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[8e9cbb2] | 344 | // the expression fed into a single parameter constructor or destructor may contain side |
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| 345 | // effects, so must still output this expression |
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[64071c2] | 346 | output << "("; |
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[356189a] | 347 | (*arg++)->accept( *this ); |
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[64071c2] | 348 | output << ") /* " << opInfo.inputName << " */"; |
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[356189a] | 349 | } else if ( applicationExpr->get_args().size() == 2 ) { |
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[c2ce2350] | 350 | // intrinsic two parameter constructors are essentially bitwise assignment |
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[356189a] | 351 | output << "("; |
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| 352 | (*arg++)->accept( *this ); |
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| 353 | output << opInfo.symbol; |
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| 354 | (*arg)->accept( *this ); |
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[c2ce2350] | 355 | output << ") /* " << opInfo.inputName << " */"; |
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[356189a] | 356 | } else { |
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[c2ce2350] | 357 | // no constructors with 0 or more than 2 parameters |
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[356189a] | 358 | assert( false ); |
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[8688ce1] | 359 | } // if |
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[356189a] | 360 | break; |
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[f1e012b] | 361 | |
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[51587aa] | 362 | case OT_PREFIX: |
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| 363 | case OT_PREFIXASSIGN: |
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| 364 | assert( applicationExpr->get_args().size() == 1 ); |
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[6c4ff37] | 365 | output << "("; |
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| 366 | output << opInfo.symbol; |
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[51587aa] | 367 | (*arg)->accept( *this ); |
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[6c4ff37] | 368 | output << ")"; |
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[51587aa] | 369 | break; |
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[71f4e4f] | 370 | |
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[51587aa] | 371 | case OT_POSTFIX: |
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| 372 | case OT_POSTFIXASSIGN: |
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| 373 | assert( applicationExpr->get_args().size() == 1 ); |
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| 374 | (*arg)->accept( *this ); |
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[6c4ff37] | 375 | output << opInfo.symbol; |
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[51587aa] | 376 | break; |
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| 377 | |
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[f1e012b] | 378 | |
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[51587aa] | 379 | case OT_INFIX: |
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| 380 | case OT_INFIXASSIGN: |
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| 381 | assert( applicationExpr->get_args().size() == 2 ); |
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[6c4ff37] | 382 | output << "("; |
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[51587aa] | 383 | (*arg++)->accept( *this ); |
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[6c4ff37] | 384 | output << opInfo.symbol; |
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[51587aa] | 385 | (*arg)->accept( *this ); |
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[6c4ff37] | 386 | output << ")"; |
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[51587aa] | 387 | break; |
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[71f4e4f] | 388 | |
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[51587aa] | 389 | case OT_CONSTANT: |
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[721f17a] | 390 | case OT_LABELADDRESS: |
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| 391 | // there are no intrinsic definitions of 0/1 or label addresses as functions |
---|
[51587aa] | 392 | assert( false ); |
---|
[3778cb2] | 393 | } // switch |
---|
[17cd4eb] | 394 | } else { |
---|
[51587aa] | 395 | varExpr->accept( *this ); |
---|
[6c4ff37] | 396 | output << "("; |
---|
[51587aa] | 397 | genCommaList( applicationExpr->get_args().begin(), applicationExpr->get_args().end() ); |
---|
[6c4ff37] | 398 | output << ")"; |
---|
[17cd4eb] | 399 | } // if |
---|
[51587aa] | 400 | } else { |
---|
| 401 | applicationExpr->get_function()->accept( *this ); |
---|
[6c4ff37] | 402 | output << "("; |
---|
[51587aa] | 403 | genCommaList( applicationExpr->get_args().begin(), applicationExpr->get_args().end() ); |
---|
[6c4ff37] | 404 | output << ")"; |
---|
[51587aa] | 405 | } // if |
---|
| 406 | } |
---|
[71f4e4f] | 407 | |
---|
[8688ce1] | 408 | void CodeGenerator::visit( UntypedExpr * untypedExpr ) { |
---|
[e04ef3a] | 409 | extension( untypedExpr ); |
---|
[8688ce1] | 410 | if ( NameExpr * nameExpr = dynamic_cast< NameExpr* >( untypedExpr->get_function() ) ) { |
---|
[51587aa] | 411 | OperatorInfo opInfo; |
---|
| 412 | if ( operatorLookup( nameExpr->get_name(), opInfo ) ) { |
---|
| 413 | std::list< Expression* >::iterator arg = untypedExpr->get_args().begin(); |
---|
| 414 | switch ( opInfo.type ) { |
---|
| 415 | case OT_INDEX: |
---|
| 416 | assert( untypedExpr->get_args().size() == 2 ); |
---|
| 417 | (*arg++)->accept( *this ); |
---|
[6c4ff37] | 418 | output << "["; |
---|
[51587aa] | 419 | (*arg)->accept( *this ); |
---|
[6c4ff37] | 420 | output << "]"; |
---|
[51587aa] | 421 | break; |
---|
[71f4e4f] | 422 | |
---|
[51587aa] | 423 | case OT_CALL: |
---|
[f1e012b] | 424 | assert( false ); |
---|
| 425 | |
---|
[c2ce2350] | 426 | case OT_CTOR: |
---|
| 427 | case OT_DTOR: |
---|
| 428 | if ( untypedExpr->get_args().size() == 1 ) { |
---|
[8e9cbb2] | 429 | // the expression fed into a single parameter constructor or destructor may contain side |
---|
| 430 | // effects, so must still output this expression |
---|
[64071c2] | 431 | output << "("; |
---|
[c2ce2350] | 432 | (*arg++)->accept( *this ); |
---|
[64071c2] | 433 | output << ") /* " << opInfo.inputName << " */"; |
---|
[c2ce2350] | 434 | } else if ( untypedExpr->get_args().size() == 2 ) { |
---|
| 435 | // intrinsic two parameter constructors are essentially bitwise assignment |
---|
| 436 | output << "("; |
---|
| 437 | (*arg++)->accept( *this ); |
---|
| 438 | output << opInfo.symbol; |
---|
| 439 | (*arg)->accept( *this ); |
---|
| 440 | output << ") /* " << opInfo.inputName << " */"; |
---|
| 441 | } else { |
---|
| 442 | // no constructors with 0 or more than 2 parameters |
---|
| 443 | assert( false ); |
---|
[3778cb2] | 444 | } // if |
---|
[51587aa] | 445 | break; |
---|
[71f4e4f] | 446 | |
---|
[51587aa] | 447 | case OT_PREFIX: |
---|
| 448 | case OT_PREFIXASSIGN: |
---|
[de62360d] | 449 | case OT_LABELADDRESS: |
---|
[51587aa] | 450 | assert( untypedExpr->get_args().size() == 1 ); |
---|
[6c4ff37] | 451 | output << "("; |
---|
| 452 | output << opInfo.symbol; |
---|
[51587aa] | 453 | (*arg)->accept( *this ); |
---|
[6c4ff37] | 454 | output << ")"; |
---|
[51587aa] | 455 | break; |
---|
[71f4e4f] | 456 | |
---|
[51587aa] | 457 | case OT_POSTFIX: |
---|
| 458 | case OT_POSTFIXASSIGN: |
---|
| 459 | assert( untypedExpr->get_args().size() == 1 ); |
---|
| 460 | (*arg)->accept( *this ); |
---|
[6c4ff37] | 461 | output << opInfo.symbol; |
---|
[51587aa] | 462 | break; |
---|
[71f4e4f] | 463 | |
---|
[51587aa] | 464 | case OT_INFIX: |
---|
| 465 | case OT_INFIXASSIGN: |
---|
| 466 | assert( untypedExpr->get_args().size() == 2 ); |
---|
[6c4ff37] | 467 | output << "("; |
---|
[51587aa] | 468 | (*arg++)->accept( *this ); |
---|
[6c4ff37] | 469 | output << opInfo.symbol; |
---|
[51587aa] | 470 | (*arg)->accept( *this ); |
---|
[6c4ff37] | 471 | output << ")"; |
---|
[51587aa] | 472 | break; |
---|
[71f4e4f] | 473 | |
---|
[51587aa] | 474 | case OT_CONSTANT: |
---|
| 475 | // there are no intrinsic definitions of 0 or 1 as functions |
---|
| 476 | assert( false ); |
---|
[3778cb2] | 477 | } // switch |
---|
[51587aa] | 478 | } else { |
---|
[8688ce1] | 479 | if ( nameExpr->get_name() == "..." ) { // case V1 ... V2 or case V1~V2 |
---|
[ac911f4] | 480 | assert( untypedExpr->get_args().size() == 2 ); |
---|
| 481 | (*untypedExpr->get_args().begin())->accept( *this ); |
---|
| 482 | output << " ... "; |
---|
| 483 | (*--untypedExpr->get_args().end())->accept( *this ); |
---|
[057b34f] | 484 | } else { // builtin routines |
---|
| 485 | nameExpr->accept( *this ); |
---|
| 486 | output << "("; |
---|
| 487 | genCommaList( untypedExpr->get_args().begin(), untypedExpr->get_args().end() ); |
---|
| 488 | output << ")"; |
---|
[66d12f7] | 489 | } // if |
---|
[51587aa] | 490 | } // if |
---|
| 491 | } else { |
---|
| 492 | untypedExpr->get_function()->accept( *this ); |
---|
[6c4ff37] | 493 | output << "("; |
---|
[51587aa] | 494 | genCommaList( untypedExpr->get_args().begin(), untypedExpr->get_args().end() ); |
---|
[6c4ff37] | 495 | output << ")"; |
---|
[51587aa] | 496 | } // if |
---|
| 497 | } |
---|
[71f4e4f] | 498 | |
---|
[064e3ff] | 499 | void CodeGenerator::visit( RangeExpr * rangeExpr ) { |
---|
| 500 | rangeExpr->get_low()->accept( *this ); |
---|
| 501 | output << " ... "; |
---|
| 502 | rangeExpr->get_high()->accept( *this ); |
---|
| 503 | } |
---|
| 504 | |
---|
[8688ce1] | 505 | void CodeGenerator::visit( NameExpr * nameExpr ) { |
---|
[e04ef3a] | 506 | extension( nameExpr ); |
---|
[51587aa] | 507 | OperatorInfo opInfo; |
---|
| 508 | if ( operatorLookup( nameExpr->get_name(), opInfo ) ) { |
---|
| 509 | assert( opInfo.type == OT_CONSTANT ); |
---|
[6c4ff37] | 510 | output << opInfo.symbol; |
---|
[51587aa] | 511 | } else { |
---|
[6c4ff37] | 512 | output << nameExpr->get_name(); |
---|
[51587aa] | 513 | } // if |
---|
| 514 | } |
---|
[71f4e4f] | 515 | |
---|
[8688ce1] | 516 | void CodeGenerator::visit( AddressExpr * addressExpr ) { |
---|
[e04ef3a] | 517 | extension( addressExpr ); |
---|
[6c4ff37] | 518 | output << "(&"; |
---|
[51587aa] | 519 | // this hack makes sure that we don't convert "constant_zero" to "0" if we're taking its address |
---|
[8688ce1] | 520 | if ( VariableExpr * variableExpr = dynamic_cast< VariableExpr* >( addressExpr->get_arg() ) ) { |
---|
[6c4ff37] | 521 | output << mangleName( variableExpr->get_var() ); |
---|
[51587aa] | 522 | } else { |
---|
| 523 | addressExpr->get_arg()->accept( *this ); |
---|
| 524 | } // if |
---|
[6c4ff37] | 525 | output << ")"; |
---|
[51587aa] | 526 | } |
---|
| 527 | |
---|
[8688ce1] | 528 | void CodeGenerator::visit( CastExpr * castExpr ) { |
---|
[e04ef3a] | 529 | extension( castExpr ); |
---|
[803deb1] | 530 | output << "("; |
---|
[906e24d] | 531 | if ( castExpr->get_result()->isVoid() ) { |
---|
[803deb1] | 532 | output << "(void)" ; |
---|
[906e24d] | 533 | } else if ( ! castExpr->get_result()->get_isLvalue() ) { |
---|
[803deb1] | 534 | // at least one result type of cast, but not an lvalue |
---|
| 535 | output << "("; |
---|
[906e24d] | 536 | output << genType( castExpr->get_result(), "" ); |
---|
[71f4e4f] | 537 | output << ")"; |
---|
[803deb1] | 538 | } else { |
---|
[8e9cbb2] | 539 | // otherwise, the cast is to an lvalue type, so the cast should be dropped, since the result of a cast is |
---|
[803deb1] | 540 | // never an lvalue in C |
---|
[3778cb2] | 541 | } // if |
---|
[803deb1] | 542 | castExpr->get_arg()->accept( *this ); |
---|
| 543 | output << ")"; |
---|
[51587aa] | 544 | } |
---|
[71f4e4f] | 545 | |
---|
[8688ce1] | 546 | void CodeGenerator::visit( UntypedMemberExpr * memberExpr ) { |
---|
[51587aa] | 547 | assert( false ); |
---|
| 548 | } |
---|
[71f4e4f] | 549 | |
---|
[8688ce1] | 550 | void CodeGenerator::visit( MemberExpr * memberExpr ) { |
---|
[e04ef3a] | 551 | extension( memberExpr ); |
---|
[51587aa] | 552 | memberExpr->get_aggregate()->accept( *this ); |
---|
[6c4ff37] | 553 | output << "." << mangleName( memberExpr->get_member() ); |
---|
[51587aa] | 554 | } |
---|
[71f4e4f] | 555 | |
---|
[8688ce1] | 556 | void CodeGenerator::visit( VariableExpr * variableExpr ) { |
---|
[e04ef3a] | 557 | extension( variableExpr ); |
---|
[51587aa] | 558 | OperatorInfo opInfo; |
---|
| 559 | if ( variableExpr->get_var()->get_linkage() == LinkageSpec::Intrinsic && operatorLookup( variableExpr->get_var()->get_name(), opInfo ) && opInfo.type == OT_CONSTANT ) { |
---|
[6c4ff37] | 560 | output << opInfo.symbol; |
---|
[51587aa] | 561 | } else { |
---|
[6c4ff37] | 562 | output << mangleName( variableExpr->get_var() ); |
---|
[51587aa] | 563 | } // if |
---|
| 564 | } |
---|
[71f4e4f] | 565 | |
---|
[8688ce1] | 566 | void CodeGenerator::visit( ConstantExpr * constantExpr ) { |
---|
[51587aa] | 567 | assert( constantExpr->get_constant() ); |
---|
[e04ef3a] | 568 | extension( constantExpr ); |
---|
[51587aa] | 569 | constantExpr->get_constant()->accept( *this ); |
---|
| 570 | } |
---|
[71f4e4f] | 571 | |
---|
[8688ce1] | 572 | void CodeGenerator::visit( SizeofExpr * sizeofExpr ) { |
---|
[e04ef3a] | 573 | extension( sizeofExpr ); |
---|
[6c4ff37] | 574 | output << "sizeof("; |
---|
[51587aa] | 575 | if ( sizeofExpr->get_isType() ) { |
---|
[6c4ff37] | 576 | output << genType( sizeofExpr->get_type(), "" ); |
---|
[51587aa] | 577 | } else { |
---|
| 578 | sizeofExpr->get_expr()->accept( *this ); |
---|
| 579 | } // if |
---|
[6c4ff37] | 580 | output << ")"; |
---|
[51587aa] | 581 | } |
---|
[47534159] | 582 | |
---|
[8688ce1] | 583 | void CodeGenerator::visit( AlignofExpr * alignofExpr ) { |
---|
[47534159] | 584 | // use GCC extension to avoid bumping std to C11 |
---|
[8e9cbb2] | 585 | extension( alignofExpr ); |
---|
[47534159] | 586 | output << "__alignof__("; |
---|
[25a054f] | 587 | if ( alignofExpr->get_isType() ) { |
---|
| 588 | output << genType( alignofExpr->get_type(), "" ); |
---|
[47534159] | 589 | } else { |
---|
[25a054f] | 590 | alignofExpr->get_expr()->accept( *this ); |
---|
[47534159] | 591 | } // if |
---|
| 592 | output << ")"; |
---|
| 593 | } |
---|
[71f4e4f] | 594 | |
---|
[8688ce1] | 595 | void CodeGenerator::visit( UntypedOffsetofExpr * offsetofExpr ) { |
---|
[8e9cbb2] | 596 | assert( false && "UntypedOffsetofExpr should not reach code generation." ); |
---|
[2a4b088] | 597 | } |
---|
| 598 | |
---|
[8688ce1] | 599 | void CodeGenerator::visit( OffsetofExpr * offsetofExpr ) { |
---|
[25a054f] | 600 | // use GCC builtin |
---|
| 601 | output << "__builtin_offsetof("; |
---|
| 602 | output << genType( offsetofExpr->get_type(), "" ); |
---|
[e551c69] | 603 | output << ", " << mangleName( offsetofExpr->get_member() ); |
---|
[25a054f] | 604 | output << ")"; |
---|
| 605 | } |
---|
[d63eeb0] | 606 | |
---|
[8688ce1] | 607 | void CodeGenerator::visit( OffsetPackExpr * offsetPackExpr ) { |
---|
[8e9cbb2] | 608 | assert( false && "OffsetPackExpr should not reach code generation." ); |
---|
[afc1045] | 609 | } |
---|
[70a06f6] | 610 | |
---|
[8688ce1] | 611 | void CodeGenerator::visit( LogicalExpr * logicalExpr ) { |
---|
[e04ef3a] | 612 | extension( logicalExpr ); |
---|
[6c4ff37] | 613 | output << "("; |
---|
[51587aa] | 614 | logicalExpr->get_arg1()->accept( *this ); |
---|
| 615 | if ( logicalExpr->get_isAnd() ) { |
---|
[6c4ff37] | 616 | output << " && "; |
---|
[51587aa] | 617 | } else { |
---|
[6c4ff37] | 618 | output << " || "; |
---|
[51587aa] | 619 | } // if |
---|
| 620 | logicalExpr->get_arg2()->accept( *this ); |
---|
[6c4ff37] | 621 | output << ")"; |
---|
[51587aa] | 622 | } |
---|
[71f4e4f] | 623 | |
---|
[8688ce1] | 624 | void CodeGenerator::visit( ConditionalExpr * conditionalExpr ) { |
---|
[e04ef3a] | 625 | extension( conditionalExpr ); |
---|
[6c4ff37] | 626 | output << "("; |
---|
[51587aa] | 627 | conditionalExpr->get_arg1()->accept( *this ); |
---|
[6c4ff37] | 628 | output << " ? "; |
---|
[51587aa] | 629 | conditionalExpr->get_arg2()->accept( *this ); |
---|
[6c4ff37] | 630 | output << " : "; |
---|
[51587aa] | 631 | conditionalExpr->get_arg3()->accept( *this ); |
---|
[6c4ff37] | 632 | output << ")"; |
---|
[51587aa] | 633 | } |
---|
[71f4e4f] | 634 | |
---|
[8688ce1] | 635 | void CodeGenerator::visit( CommaExpr * commaExpr ) { |
---|
[e04ef3a] | 636 | extension( commaExpr ); |
---|
[6c4ff37] | 637 | output << "("; |
---|
[51587aa] | 638 | commaExpr->get_arg1()->accept( *this ); |
---|
[6c4ff37] | 639 | output << " , "; |
---|
[51587aa] | 640 | commaExpr->get_arg2()->accept( *this ); |
---|
[6c4ff37] | 641 | output << ")"; |
---|
[51587aa] | 642 | } |
---|
[71f4e4f] | 643 | |
---|
[3c13c03] | 644 | void CodeGenerator::visit( TupleExpr * tupleExpr ) { assert( false ); } |
---|
[71f4e4f] | 645 | |
---|
[8688ce1] | 646 | void CodeGenerator::visit( TypeExpr * typeExpr ) {} |
---|
[2b6c1e0] | 647 | |
---|
[8688ce1] | 648 | void CodeGenerator::visit( AsmExpr * asmExpr ) { |
---|
[7f5566b] | 649 | if ( asmExpr->get_inout() ) { |
---|
| 650 | output << "[ "; |
---|
| 651 | asmExpr->get_inout()->accept( *this ); |
---|
| 652 | output << " ] "; |
---|
| 653 | } // if |
---|
| 654 | asmExpr->get_constraint()->accept( *this ); |
---|
| 655 | output << " ( "; |
---|
| 656 | asmExpr->get_operand()->accept( *this ); |
---|
| 657 | output << " )"; |
---|
| 658 | } |
---|
| 659 | |
---|
[3c13c03] | 660 | void CodeGenerator::visit( CompoundLiteralExpr *compLitExpr ) { |
---|
| 661 | assert( compLitExpr->get_type() && dynamic_cast< ListInit * > ( compLitExpr->get_initializer() ) ); |
---|
| 662 | output << "(" << genType( compLitExpr->get_type(), "" ) << ")"; |
---|
| 663 | compLitExpr->get_initializer()->accept( *this ); |
---|
| 664 | } |
---|
| 665 | |
---|
[6eb8948] | 666 | void CodeGenerator::visit( StmtExpr * stmtExpr ) { |
---|
[3c13c03] | 667 | std::list< Statement * > & stmts = stmtExpr->get_statements()->get_kids(); |
---|
| 668 | output << "({" << std::endl; |
---|
| 669 | cur_indent += CodeGenerator::tabsize; |
---|
| 670 | unsigned int numStmts = stmts.size(); |
---|
| 671 | unsigned int i = 0; |
---|
| 672 | for ( Statement * stmt : stmts ) { |
---|
| 673 | output << indent << printLabels( stmt->get_labels() ); |
---|
| 674 | if ( i+1 == numStmts ) { |
---|
| 675 | // last statement in a statement expression needs to be handled specially - |
---|
| 676 | // cannot cast to void, otherwise the expression statement has no value |
---|
| 677 | if ( ExprStmt * exprStmt = dynamic_cast< ExprStmt * >( stmt ) ) { |
---|
| 678 | exprStmt->get_expr()->accept( *this ); |
---|
| 679 | output << ";" << endl; |
---|
| 680 | ++i; |
---|
| 681 | break; |
---|
| 682 | } |
---|
| 683 | } |
---|
| 684 | stmt->accept( *this ); |
---|
| 685 | output << endl; |
---|
| 686 | if ( wantSpacing( stmt ) ) { |
---|
| 687 | output << endl; |
---|
| 688 | } // if |
---|
| 689 | ++i; |
---|
| 690 | } |
---|
| 691 | cur_indent -= CodeGenerator::tabsize; |
---|
| 692 | output << indent << "})"; |
---|
[6eb8948] | 693 | } |
---|
| 694 | |
---|
[51587aa] | 695 | //*** Statements |
---|
[8688ce1] | 696 | void CodeGenerator::visit( CompoundStmt * compoundStmt ) { |
---|
[51587aa] | 697 | std::list<Statement*> ks = compoundStmt->get_kids(); |
---|
[2b6c1e0] | 698 | output << "{" << endl; |
---|
[51587aa] | 699 | |
---|
[2b6c1e0] | 700 | cur_indent += CodeGenerator::tabsize; |
---|
[51587aa] | 701 | |
---|
[7f5566b] | 702 | for ( std::list<Statement *>::iterator i = ks.begin(); i != ks.end(); i++ ) { |
---|
[cda48b6] | 703 | output << indent << printLabels( (*i)->get_labels() ); |
---|
[7f5566b] | 704 | (*i)->accept( *this ); |
---|
[2b6c1e0] | 705 | |
---|
[6c4ff37] | 706 | output << endl; |
---|
[2b6c1e0] | 707 | if ( wantSpacing( *i ) ) { |
---|
| 708 | output << endl; |
---|
[3778cb2] | 709 | } // if |
---|
[8688ce1] | 710 | } // for |
---|
[71f4e4f] | 711 | cur_indent -= CodeGenerator::tabsize; |
---|
[51587aa] | 712 | |
---|
[cda48b6] | 713 | output << indent << "}"; |
---|
[51587aa] | 714 | } |
---|
| 715 | |
---|
[8688ce1] | 716 | void CodeGenerator::visit( ExprStmt * exprStmt ) { |
---|
[6c4ff37] | 717 | assert( exprStmt ); |
---|
[321a2481] | 718 | // cast the top-level expression to void to reduce gcc warnings. |
---|
| 719 | Expression * expr = new CastExpr( exprStmt->get_expr() ); |
---|
| 720 | expr->accept( *this ); |
---|
| 721 | output << ";"; |
---|
[51587aa] | 722 | } |
---|
| 723 | |
---|
[8688ce1] | 724 | void CodeGenerator::visit( AsmStmt * asmStmt ) { |
---|
[7f5566b] | 725 | output << "asm "; |
---|
| 726 | if ( asmStmt->get_voltile() ) output << "volatile "; |
---|
| 727 | if ( ! asmStmt->get_gotolabels().empty() ) output << "goto "; |
---|
| 728 | output << "( "; |
---|
| 729 | if ( asmStmt->get_instruction() ) asmStmt->get_instruction()->accept( *this ); |
---|
| 730 | output << " : "; |
---|
| 731 | genCommaList( asmStmt->get_output().begin(), asmStmt->get_output().end() ); |
---|
| 732 | output << " : "; |
---|
| 733 | genCommaList( asmStmt->get_input().begin(), asmStmt->get_input().end() ); |
---|
| 734 | output << " : "; |
---|
| 735 | genCommaList( asmStmt->get_clobber().begin(), asmStmt->get_clobber().end() ); |
---|
| 736 | if ( ! asmStmt->get_gotolabels().empty() ) { |
---|
| 737 | output << " : "; |
---|
| 738 | for ( std::list<Label>::iterator begin = asmStmt->get_gotolabels().begin();; ) { |
---|
| 739 | output << *begin++; |
---|
| 740 | if ( begin == asmStmt->get_gotolabels().end() ) break; |
---|
| 741 | output << ", "; |
---|
| 742 | } // for |
---|
| 743 | } // if |
---|
| 744 | output << " );" ; |
---|
| 745 | } |
---|
| 746 | |
---|
[8688ce1] | 747 | void CodeGenerator::visit( IfStmt * ifStmt ) { |
---|
[7f5566b] | 748 | output << "if ( "; |
---|
| 749 | ifStmt->get_condition()->accept( *this ); |
---|
| 750 | output << " ) "; |
---|
[51587aa] | 751 | |
---|
[7f5566b] | 752 | ifStmt->get_thenPart()->accept( *this ); |
---|
[51587aa] | 753 | |
---|
| 754 | if ( ifStmt->get_elsePart() != 0) { |
---|
[2b6c1e0] | 755 | output << " else "; |
---|
[7f5566b] | 756 | ifStmt->get_elsePart()->accept( *this ); |
---|
[51587aa] | 757 | } // if |
---|
| 758 | } |
---|
| 759 | |
---|
[8688ce1] | 760 | void CodeGenerator::visit( SwitchStmt * switchStmt ) { |
---|
[7f5566b] | 761 | output << "switch ( " ; |
---|
| 762 | switchStmt->get_condition()->accept( *this ); |
---|
| 763 | output << " ) "; |
---|
[71f4e4f] | 764 | |
---|
[2b6c1e0] | 765 | output << "{" << std::endl; |
---|
[6c4ff37] | 766 | cur_indent += CodeGenerator::tabsize; |
---|
[8688ce1] | 767 | acceptAll( switchStmt->get_statements(), *this ); |
---|
[6c4ff37] | 768 | cur_indent -= CodeGenerator::tabsize; |
---|
[cda48b6] | 769 | output << indent << "}"; |
---|
[51587aa] | 770 | } |
---|
| 771 | |
---|
[8688ce1] | 772 | void CodeGenerator::visit( CaseStmt * caseStmt ) { |
---|
[cda48b6] | 773 | output << indent; |
---|
[eb3261f] | 774 | if ( caseStmt->isDefault()) { |
---|
[2b6c1e0] | 775 | output << "default"; |
---|
[eb3261f] | 776 | } else { |
---|
[2b6c1e0] | 777 | output << "case "; |
---|
[7f5566b] | 778 | caseStmt->get_condition()->accept( *this ); |
---|
[17cd4eb] | 779 | } // if |
---|
[6c4ff37] | 780 | output << ":\n"; |
---|
[71f4e4f] | 781 | |
---|
[51587aa] | 782 | std::list<Statement *> sts = caseStmt->get_statements(); |
---|
| 783 | |
---|
[6c4ff37] | 784 | cur_indent += CodeGenerator::tabsize; |
---|
[51587aa] | 785 | for ( std::list<Statement *>::iterator i = sts.begin(); i != sts.end(); i++) { |
---|
[cda48b6] | 786 | output << indent << printLabels( (*i)->get_labels() ) ; |
---|
[7f5566b] | 787 | (*i)->accept( *this ); |
---|
[6c4ff37] | 788 | output << endl; |
---|
[3778cb2] | 789 | } // for |
---|
[6c4ff37] | 790 | cur_indent -= CodeGenerator::tabsize; |
---|
[51587aa] | 791 | } |
---|
| 792 | |
---|
[8688ce1] | 793 | void CodeGenerator::visit( BranchStmt * branchStmt ) { |
---|
[51587aa] | 794 | switch ( branchStmt->get_type()) { |
---|
| 795 | case BranchStmt::Goto: |
---|
| 796 | if ( ! branchStmt->get_target().empty() ) |
---|
[6c4ff37] | 797 | output << "goto " << branchStmt->get_target(); |
---|
[71f4e4f] | 798 | else { |
---|
[51587aa] | 799 | if ( branchStmt->get_computedTarget() != 0 ) { |
---|
[6c4ff37] | 800 | output << "goto *"; |
---|
[51587aa] | 801 | branchStmt->get_computedTarget()->accept( *this ); |
---|
| 802 | } // if |
---|
| 803 | } // if |
---|
| 804 | break; |
---|
| 805 | case BranchStmt::Break: |
---|
[6c4ff37] | 806 | output << "break"; |
---|
[51587aa] | 807 | break; |
---|
| 808 | case BranchStmt::Continue: |
---|
[6c4ff37] | 809 | output << "continue"; |
---|
[51587aa] | 810 | break; |
---|
[3778cb2] | 811 | } // switch |
---|
[2b6c1e0] | 812 | output << ";"; |
---|
[51587aa] | 813 | } |
---|
| 814 | |
---|
| 815 | |
---|
[8688ce1] | 816 | void CodeGenerator::visit( ReturnStmt * returnStmt ) { |
---|
[6c4ff37] | 817 | output << "return "; |
---|
[4b2589a] | 818 | maybeAccept( returnStmt->get_expr(), *this ); |
---|
[6c4ff37] | 819 | output << ";"; |
---|
[51587aa] | 820 | } |
---|
| 821 | |
---|
[8688ce1] | 822 | void CodeGenerator::visit( WhileStmt * whileStmt ) { |
---|
[321a2481] | 823 | if ( whileStmt->get_isDoWhile() ) { |
---|
[6c4ff37] | 824 | output << "do" ; |
---|
[321a2481] | 825 | } else { |
---|
[6c4ff37] | 826 | output << "while (" ; |
---|
[7f5566b] | 827 | whileStmt->get_condition()->accept( *this ); |
---|
[6c4ff37] | 828 | output << ")"; |
---|
[51587aa] | 829 | } // if |
---|
[2b6c1e0] | 830 | output << " "; |
---|
[51587aa] | 831 | |
---|
[2b6c1e0] | 832 | output << CodeGenerator::printLabels( whileStmt->get_body()->get_labels() ); |
---|
[51587aa] | 833 | whileStmt->get_body()->accept( *this ); |
---|
| 834 | |
---|
[cda48b6] | 835 | output << indent; |
---|
[51587aa] | 836 | |
---|
| 837 | if ( whileStmt->get_isDoWhile() ) { |
---|
[6c4ff37] | 838 | output << " while (" ; |
---|
[7f5566b] | 839 | whileStmt->get_condition()->accept( *this ); |
---|
[6c4ff37] | 840 | output << ");"; |
---|
[51587aa] | 841 | } // if |
---|
| 842 | } |
---|
| 843 | |
---|
[8688ce1] | 844 | void CodeGenerator::visit( ForStmt * forStmt ) { |
---|
[8e9cbb2] | 845 | // initialization is always hoisted, so don't bother doing anything with that |
---|
[145f1fc] | 846 | output << "for (;"; |
---|
[51587aa] | 847 | |
---|
[321a2481] | 848 | if ( forStmt->get_condition() != 0 ) { |
---|
[51587aa] | 849 | forStmt->get_condition()->accept( *this ); |
---|
[3778cb2] | 850 | } // if |
---|
[6c4ff37] | 851 | output << ";"; |
---|
[51587aa] | 852 | |
---|
[321a2481] | 853 | if ( forStmt->get_increment() != 0 ) { |
---|
| 854 | // cast the top-level expression to void to reduce gcc warnings. |
---|
| 855 | Expression * expr = new CastExpr( forStmt->get_increment() ); |
---|
| 856 | expr->accept( *this ); |
---|
[3778cb2] | 857 | } // if |
---|
[2b6c1e0] | 858 | output << ") "; |
---|
[51587aa] | 859 | |
---|
| 860 | if ( forStmt->get_body() != 0 ) { |
---|
[2b6c1e0] | 861 | output << CodeGenerator::printLabels( forStmt->get_body()->get_labels() ); |
---|
[51587aa] | 862 | forStmt->get_body()->accept( *this ); |
---|
| 863 | } // if |
---|
| 864 | } |
---|
| 865 | |
---|
[8688ce1] | 866 | void CodeGenerator::visit( NullStmt * nullStmt ) { |
---|
[cda48b6] | 867 | //output << indent << CodeGenerator::printLabels( nullStmt->get_labels() ); |
---|
[6c4ff37] | 868 | output << "/* null statement */ ;"; |
---|
[51587aa] | 869 | } |
---|
| 870 | |
---|
[8688ce1] | 871 | void CodeGenerator::visit( DeclStmt * declStmt ) { |
---|
[51587aa] | 872 | declStmt->get_decl()->accept( *this ); |
---|
[71f4e4f] | 873 | |
---|
[51587aa] | 874 | if ( doSemicolon( declStmt->get_decl() ) ) { |
---|
[6c4ff37] | 875 | output << ";"; |
---|
[51587aa] | 876 | } // if |
---|
| 877 | } |
---|
| 878 | |
---|
[8688ce1] | 879 | void CodeGenerator::handleStorageClass( Declaration * decl ) { |
---|
[51587aa] | 880 | switch ( decl->get_storageClass() ) { |
---|
[68cd1ce] | 881 | case DeclarationNode::Extern: |
---|
[6c4ff37] | 882 | output << "extern "; |
---|
[51587aa] | 883 | break; |
---|
[68cd1ce] | 884 | case DeclarationNode::Static: |
---|
[6c4ff37] | 885 | output << "static "; |
---|
[51587aa] | 886 | break; |
---|
[68cd1ce] | 887 | case DeclarationNode::Auto: |
---|
[51587aa] | 888 | // silently drop storage class |
---|
| 889 | break; |
---|
[68cd1ce] | 890 | case DeclarationNode::Register: |
---|
[6c4ff37] | 891 | output << "register "; |
---|
[51587aa] | 892 | break; |
---|
[68cd1ce] | 893 | case DeclarationNode::Inline: |
---|
[de62360d] | 894 | output << "inline "; |
---|
[f38c8d9] | 895 | break; |
---|
[68cd1ce] | 896 | case DeclarationNode::Fortran: |
---|
| 897 | output << "fortran "; |
---|
| 898 | break; |
---|
| 899 | case DeclarationNode::Noreturn: |
---|
| 900 | output << "_Noreturn "; |
---|
| 901 | break; |
---|
| 902 | case DeclarationNode::Threadlocal: |
---|
| 903 | output << "_Thread_local "; |
---|
| 904 | break; |
---|
| 905 | case DeclarationNode::NoStorageClass: |
---|
[f38c8d9] | 906 | break; |
---|
[843054c2] | 907 | } // switch |
---|
[51587aa] | 908 | } |
---|
[51b7345] | 909 | } // namespace CodeGen |
---|
[51587aa] | 910 | |
---|
| 911 | // Local Variables: // |
---|
| 912 | // tab-width: 4 // |
---|
| 913 | // mode: c++ // |
---|
| 914 | // compile-command: "make install" // |
---|
| 915 | // End: // |
---|