[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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[8688ce1] | 309 | UntypedExpr * newExpr = new UntypedExpr( new NameExpr( "*?" ) ); |
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[51587aa] | 310 | newExpr->get_args().push_back( *arg ); |
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[906e24d] | 311 | Type * type = InitTweak::getPointerBase( (*arg)->get_result() ); |
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[10a7775] | 312 | assert( type ); |
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[906e24d] | 313 | newExpr->set_result( type->clone() ); |
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[51587aa] | 314 | *arg = newExpr; |
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| 315 | } // if |
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| 316 | break; |
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| 317 | } |
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[71f4e4f] | 318 | |
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[51587aa] | 319 | default: |
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| 320 | // do nothing |
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| 321 | ; |
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[3778cb2] | 322 | } // switch |
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[71f4e4f] | 323 | |
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[51587aa] | 324 | switch ( opInfo.type ) { |
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| 325 | case OT_INDEX: |
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| 326 | assert( applicationExpr->get_args().size() == 2 ); |
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| 327 | (*arg++)->accept( *this ); |
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[6c4ff37] | 328 | output << "["; |
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[51587aa] | 329 | (*arg)->accept( *this ); |
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[6c4ff37] | 330 | output << "]"; |
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[51587aa] | 331 | break; |
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[71f4e4f] | 332 | |
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[51587aa] | 333 | case OT_CALL: |
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[356189a] | 334 | // there are no intrinsic definitions of the function call operator |
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[51587aa] | 335 | assert( false ); |
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| 336 | break; |
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[71f4e4f] | 337 | |
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[f1e012b] | 338 | case OT_CTOR: |
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[c2ce2350] | 339 | case OT_DTOR: |
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[356189a] | 340 | if ( applicationExpr->get_args().size() == 1 ) { |
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[8e9cbb2] | 341 | // the expression fed into a single parameter constructor or destructor may contain side |
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| 342 | // effects, so must still output this expression |
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[64071c2] | 343 | output << "("; |
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[356189a] | 344 | (*arg++)->accept( *this ); |
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[64071c2] | 345 | output << ") /* " << opInfo.inputName << " */"; |
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[356189a] | 346 | } else if ( applicationExpr->get_args().size() == 2 ) { |
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[c2ce2350] | 347 | // intrinsic two parameter constructors are essentially bitwise assignment |
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[356189a] | 348 | output << "("; |
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| 349 | (*arg++)->accept( *this ); |
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| 350 | output << opInfo.symbol; |
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| 351 | (*arg)->accept( *this ); |
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[c2ce2350] | 352 | output << ") /* " << opInfo.inputName << " */"; |
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[356189a] | 353 | } else { |
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[c2ce2350] | 354 | // no constructors with 0 or more than 2 parameters |
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[356189a] | 355 | assert( false ); |
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[8688ce1] | 356 | } // if |
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[356189a] | 357 | break; |
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[f1e012b] | 358 | |
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[51587aa] | 359 | case OT_PREFIX: |
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| 360 | case OT_PREFIXASSIGN: |
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| 361 | assert( applicationExpr->get_args().size() == 1 ); |
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[6c4ff37] | 362 | output << "("; |
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| 363 | output << opInfo.symbol; |
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[51587aa] | 364 | (*arg)->accept( *this ); |
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[6c4ff37] | 365 | output << ")"; |
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[51587aa] | 366 | break; |
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[71f4e4f] | 367 | |
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[51587aa] | 368 | case OT_POSTFIX: |
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| 369 | case OT_POSTFIXASSIGN: |
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| 370 | assert( applicationExpr->get_args().size() == 1 ); |
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| 371 | (*arg)->accept( *this ); |
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[6c4ff37] | 372 | output << opInfo.symbol; |
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[51587aa] | 373 | break; |
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| 374 | |
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[f1e012b] | 375 | |
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[51587aa] | 376 | case OT_INFIX: |
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| 377 | case OT_INFIXASSIGN: |
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| 378 | assert( applicationExpr->get_args().size() == 2 ); |
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[6c4ff37] | 379 | output << "("; |
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[51587aa] | 380 | (*arg++)->accept( *this ); |
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[6c4ff37] | 381 | output << opInfo.symbol; |
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[51587aa] | 382 | (*arg)->accept( *this ); |
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[6c4ff37] | 383 | output << ")"; |
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[51587aa] | 384 | break; |
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[71f4e4f] | 385 | |
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[51587aa] | 386 | case OT_CONSTANT: |
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[721f17a] | 387 | case OT_LABELADDRESS: |
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| 388 | // there are no intrinsic definitions of 0/1 or label addresses as functions |
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[51587aa] | 389 | assert( false ); |
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[3778cb2] | 390 | } // switch |
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[17cd4eb] | 391 | } else { |
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[51587aa] | 392 | varExpr->accept( *this ); |
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[6c4ff37] | 393 | output << "("; |
---|
[51587aa] | 394 | genCommaList( applicationExpr->get_args().begin(), applicationExpr->get_args().end() ); |
---|
[6c4ff37] | 395 | output << ")"; |
---|
[17cd4eb] | 396 | } // if |
---|
[51587aa] | 397 | } else { |
---|
| 398 | applicationExpr->get_function()->accept( *this ); |
---|
[6c4ff37] | 399 | output << "("; |
---|
[51587aa] | 400 | genCommaList( applicationExpr->get_args().begin(), applicationExpr->get_args().end() ); |
---|
[6c4ff37] | 401 | output << ")"; |
---|
[51587aa] | 402 | } // if |
---|
| 403 | } |
---|
[71f4e4f] | 404 | |
---|
[8688ce1] | 405 | void CodeGenerator::visit( UntypedExpr * untypedExpr ) { |
---|
[e04ef3a] | 406 | extension( untypedExpr ); |
---|
[8688ce1] | 407 | if ( NameExpr * nameExpr = dynamic_cast< NameExpr* >( untypedExpr->get_function() ) ) { |
---|
[51587aa] | 408 | OperatorInfo opInfo; |
---|
| 409 | if ( operatorLookup( nameExpr->get_name(), opInfo ) ) { |
---|
| 410 | std::list< Expression* >::iterator arg = untypedExpr->get_args().begin(); |
---|
| 411 | switch ( opInfo.type ) { |
---|
| 412 | case OT_INDEX: |
---|
| 413 | assert( untypedExpr->get_args().size() == 2 ); |
---|
| 414 | (*arg++)->accept( *this ); |
---|
[6c4ff37] | 415 | output << "["; |
---|
[51587aa] | 416 | (*arg)->accept( *this ); |
---|
[6c4ff37] | 417 | output << "]"; |
---|
[51587aa] | 418 | break; |
---|
[71f4e4f] | 419 | |
---|
[51587aa] | 420 | case OT_CALL: |
---|
[f1e012b] | 421 | assert( false ); |
---|
| 422 | |
---|
[c2ce2350] | 423 | case OT_CTOR: |
---|
| 424 | case OT_DTOR: |
---|
| 425 | if ( untypedExpr->get_args().size() == 1 ) { |
---|
[8e9cbb2] | 426 | // the expression fed into a single parameter constructor or destructor may contain side |
---|
| 427 | // effects, so must still output this expression |
---|
[64071c2] | 428 | output << "("; |
---|
[c2ce2350] | 429 | (*arg++)->accept( *this ); |
---|
[64071c2] | 430 | output << ") /* " << opInfo.inputName << " */"; |
---|
[c2ce2350] | 431 | } else if ( untypedExpr->get_args().size() == 2 ) { |
---|
| 432 | // intrinsic two parameter constructors are essentially bitwise assignment |
---|
| 433 | output << "("; |
---|
| 434 | (*arg++)->accept( *this ); |
---|
| 435 | output << opInfo.symbol; |
---|
| 436 | (*arg)->accept( *this ); |
---|
| 437 | output << ") /* " << opInfo.inputName << " */"; |
---|
| 438 | } else { |
---|
| 439 | // no constructors with 0 or more than 2 parameters |
---|
| 440 | assert( false ); |
---|
[3778cb2] | 441 | } // if |
---|
[51587aa] | 442 | break; |
---|
[71f4e4f] | 443 | |
---|
[51587aa] | 444 | case OT_PREFIX: |
---|
| 445 | case OT_PREFIXASSIGN: |
---|
[de62360d] | 446 | case OT_LABELADDRESS: |
---|
[51587aa] | 447 | assert( untypedExpr->get_args().size() == 1 ); |
---|
[6c4ff37] | 448 | output << "("; |
---|
| 449 | output << opInfo.symbol; |
---|
[51587aa] | 450 | (*arg)->accept( *this ); |
---|
[6c4ff37] | 451 | output << ")"; |
---|
[51587aa] | 452 | break; |
---|
[71f4e4f] | 453 | |
---|
[51587aa] | 454 | case OT_POSTFIX: |
---|
| 455 | case OT_POSTFIXASSIGN: |
---|
| 456 | assert( untypedExpr->get_args().size() == 1 ); |
---|
| 457 | (*arg)->accept( *this ); |
---|
[6c4ff37] | 458 | output << opInfo.symbol; |
---|
[51587aa] | 459 | break; |
---|
[71f4e4f] | 460 | |
---|
[51587aa] | 461 | case OT_INFIX: |
---|
| 462 | case OT_INFIXASSIGN: |
---|
| 463 | assert( untypedExpr->get_args().size() == 2 ); |
---|
[6c4ff37] | 464 | output << "("; |
---|
[51587aa] | 465 | (*arg++)->accept( *this ); |
---|
[6c4ff37] | 466 | output << opInfo.symbol; |
---|
[51587aa] | 467 | (*arg)->accept( *this ); |
---|
[6c4ff37] | 468 | output << ")"; |
---|
[51587aa] | 469 | break; |
---|
[71f4e4f] | 470 | |
---|
[51587aa] | 471 | case OT_CONSTANT: |
---|
| 472 | // there are no intrinsic definitions of 0 or 1 as functions |
---|
| 473 | assert( false ); |
---|
[3778cb2] | 474 | } // switch |
---|
[51587aa] | 475 | } else { |
---|
[8688ce1] | 476 | if ( nameExpr->get_name() == "..." ) { // case V1 ... V2 or case V1~V2 |
---|
[ac911f4] | 477 | assert( untypedExpr->get_args().size() == 2 ); |
---|
| 478 | (*untypedExpr->get_args().begin())->accept( *this ); |
---|
| 479 | output << " ... "; |
---|
| 480 | (*--untypedExpr->get_args().end())->accept( *this ); |
---|
[057b34f] | 481 | } else { // builtin routines |
---|
| 482 | nameExpr->accept( *this ); |
---|
| 483 | output << "("; |
---|
| 484 | genCommaList( untypedExpr->get_args().begin(), untypedExpr->get_args().end() ); |
---|
| 485 | output << ")"; |
---|
[66d12f7] | 486 | } // if |
---|
[51587aa] | 487 | } // if |
---|
| 488 | } else { |
---|
| 489 | untypedExpr->get_function()->accept( *this ); |
---|
[6c4ff37] | 490 | output << "("; |
---|
[51587aa] | 491 | genCommaList( untypedExpr->get_args().begin(), untypedExpr->get_args().end() ); |
---|
[6c4ff37] | 492 | output << ")"; |
---|
[51587aa] | 493 | } // if |
---|
| 494 | } |
---|
[71f4e4f] | 495 | |
---|
[064e3ff] | 496 | void CodeGenerator::visit( RangeExpr * rangeExpr ) { |
---|
| 497 | rangeExpr->get_low()->accept( *this ); |
---|
| 498 | output << " ... "; |
---|
| 499 | rangeExpr->get_high()->accept( *this ); |
---|
| 500 | } |
---|
| 501 | |
---|
[8688ce1] | 502 | void CodeGenerator::visit( NameExpr * nameExpr ) { |
---|
[e04ef3a] | 503 | extension( nameExpr ); |
---|
[51587aa] | 504 | OperatorInfo opInfo; |
---|
| 505 | if ( operatorLookup( nameExpr->get_name(), opInfo ) ) { |
---|
| 506 | assert( opInfo.type == OT_CONSTANT ); |
---|
[6c4ff37] | 507 | output << opInfo.symbol; |
---|
[51587aa] | 508 | } else { |
---|
[6c4ff37] | 509 | output << nameExpr->get_name(); |
---|
[51587aa] | 510 | } // if |
---|
| 511 | } |
---|
[71f4e4f] | 512 | |
---|
[8688ce1] | 513 | void CodeGenerator::visit( AddressExpr * addressExpr ) { |
---|
[e04ef3a] | 514 | extension( addressExpr ); |
---|
[6c4ff37] | 515 | output << "(&"; |
---|
[51587aa] | 516 | // this hack makes sure that we don't convert "constant_zero" to "0" if we're taking its address |
---|
[8688ce1] | 517 | if ( VariableExpr * variableExpr = dynamic_cast< VariableExpr* >( addressExpr->get_arg() ) ) { |
---|
[6c4ff37] | 518 | output << mangleName( variableExpr->get_var() ); |
---|
[51587aa] | 519 | } else { |
---|
| 520 | addressExpr->get_arg()->accept( *this ); |
---|
| 521 | } // if |
---|
[6c4ff37] | 522 | output << ")"; |
---|
[51587aa] | 523 | } |
---|
| 524 | |
---|
[8688ce1] | 525 | void CodeGenerator::visit( CastExpr * castExpr ) { |
---|
[e04ef3a] | 526 | extension( castExpr ); |
---|
[803deb1] | 527 | output << "("; |
---|
[906e24d] | 528 | if ( castExpr->get_result()->isVoid() ) { |
---|
[803deb1] | 529 | output << "(void)" ; |
---|
[906e24d] | 530 | } else if ( ! castExpr->get_result()->get_isLvalue() ) { |
---|
[803deb1] | 531 | // at least one result type of cast, but not an lvalue |
---|
| 532 | output << "("; |
---|
[906e24d] | 533 | output << genType( castExpr->get_result(), "" ); |
---|
[71f4e4f] | 534 | output << ")"; |
---|
[803deb1] | 535 | } else { |
---|
[8e9cbb2] | 536 | // otherwise, the cast is to an lvalue type, so the cast should be dropped, since the result of a cast is |
---|
[803deb1] | 537 | // never an lvalue in C |
---|
[3778cb2] | 538 | } // if |
---|
[803deb1] | 539 | castExpr->get_arg()->accept( *this ); |
---|
| 540 | output << ")"; |
---|
[51587aa] | 541 | } |
---|
[71f4e4f] | 542 | |
---|
[8688ce1] | 543 | void CodeGenerator::visit( UntypedMemberExpr * memberExpr ) { |
---|
[51587aa] | 544 | assert( false ); |
---|
| 545 | } |
---|
[71f4e4f] | 546 | |
---|
[8688ce1] | 547 | void CodeGenerator::visit( MemberExpr * memberExpr ) { |
---|
[e04ef3a] | 548 | extension( memberExpr ); |
---|
[51587aa] | 549 | memberExpr->get_aggregate()->accept( *this ); |
---|
[6c4ff37] | 550 | output << "." << mangleName( memberExpr->get_member() ); |
---|
[51587aa] | 551 | } |
---|
[71f4e4f] | 552 | |
---|
[8688ce1] | 553 | void CodeGenerator::visit( VariableExpr * variableExpr ) { |
---|
[e04ef3a] | 554 | extension( variableExpr ); |
---|
[51587aa] | 555 | OperatorInfo opInfo; |
---|
| 556 | if ( variableExpr->get_var()->get_linkage() == LinkageSpec::Intrinsic && operatorLookup( variableExpr->get_var()->get_name(), opInfo ) && opInfo.type == OT_CONSTANT ) { |
---|
[6c4ff37] | 557 | output << opInfo.symbol; |
---|
[51587aa] | 558 | } else { |
---|
[6c4ff37] | 559 | output << mangleName( variableExpr->get_var() ); |
---|
[51587aa] | 560 | } // if |
---|
| 561 | } |
---|
[71f4e4f] | 562 | |
---|
[8688ce1] | 563 | void CodeGenerator::visit( ConstantExpr * constantExpr ) { |
---|
[51587aa] | 564 | assert( constantExpr->get_constant() ); |
---|
[e04ef3a] | 565 | extension( constantExpr ); |
---|
[51587aa] | 566 | constantExpr->get_constant()->accept( *this ); |
---|
| 567 | } |
---|
[71f4e4f] | 568 | |
---|
[8688ce1] | 569 | void CodeGenerator::visit( SizeofExpr * sizeofExpr ) { |
---|
[e04ef3a] | 570 | extension( sizeofExpr ); |
---|
[6c4ff37] | 571 | output << "sizeof("; |
---|
[51587aa] | 572 | if ( sizeofExpr->get_isType() ) { |
---|
[6c4ff37] | 573 | output << genType( sizeofExpr->get_type(), "" ); |
---|
[51587aa] | 574 | } else { |
---|
| 575 | sizeofExpr->get_expr()->accept( *this ); |
---|
| 576 | } // if |
---|
[6c4ff37] | 577 | output << ")"; |
---|
[51587aa] | 578 | } |
---|
[47534159] | 579 | |
---|
[8688ce1] | 580 | void CodeGenerator::visit( AlignofExpr * alignofExpr ) { |
---|
[47534159] | 581 | // use GCC extension to avoid bumping std to C11 |
---|
[8e9cbb2] | 582 | extension( alignofExpr ); |
---|
[47534159] | 583 | output << "__alignof__("; |
---|
[25a054f] | 584 | if ( alignofExpr->get_isType() ) { |
---|
| 585 | output << genType( alignofExpr->get_type(), "" ); |
---|
[47534159] | 586 | } else { |
---|
[25a054f] | 587 | alignofExpr->get_expr()->accept( *this ); |
---|
[47534159] | 588 | } // if |
---|
| 589 | output << ")"; |
---|
| 590 | } |
---|
[71f4e4f] | 591 | |
---|
[8688ce1] | 592 | void CodeGenerator::visit( UntypedOffsetofExpr * offsetofExpr ) { |
---|
[8e9cbb2] | 593 | assert( false && "UntypedOffsetofExpr should not reach code generation." ); |
---|
[2a4b088] | 594 | } |
---|
| 595 | |
---|
[8688ce1] | 596 | void CodeGenerator::visit( OffsetofExpr * offsetofExpr ) { |
---|
[25a054f] | 597 | // use GCC builtin |
---|
| 598 | output << "__builtin_offsetof("; |
---|
| 599 | output << genType( offsetofExpr->get_type(), "" ); |
---|
[e551c69] | 600 | output << ", " << mangleName( offsetofExpr->get_member() ); |
---|
[25a054f] | 601 | output << ")"; |
---|
| 602 | } |
---|
[d63eeb0] | 603 | |
---|
[8688ce1] | 604 | void CodeGenerator::visit( OffsetPackExpr * offsetPackExpr ) { |
---|
[8e9cbb2] | 605 | assert( false && "OffsetPackExpr should not reach code generation." ); |
---|
[afc1045] | 606 | } |
---|
[70a06f6] | 607 | |
---|
[8688ce1] | 608 | void CodeGenerator::visit( LogicalExpr * logicalExpr ) { |
---|
[e04ef3a] | 609 | extension( logicalExpr ); |
---|
[6c4ff37] | 610 | output << "("; |
---|
[51587aa] | 611 | logicalExpr->get_arg1()->accept( *this ); |
---|
| 612 | if ( logicalExpr->get_isAnd() ) { |
---|
[6c4ff37] | 613 | output << " && "; |
---|
[51587aa] | 614 | } else { |
---|
[6c4ff37] | 615 | output << " || "; |
---|
[51587aa] | 616 | } // if |
---|
| 617 | logicalExpr->get_arg2()->accept( *this ); |
---|
[6c4ff37] | 618 | output << ")"; |
---|
[51587aa] | 619 | } |
---|
[71f4e4f] | 620 | |
---|
[8688ce1] | 621 | void CodeGenerator::visit( ConditionalExpr * conditionalExpr ) { |
---|
[e04ef3a] | 622 | extension( conditionalExpr ); |
---|
[6c4ff37] | 623 | output << "("; |
---|
[51587aa] | 624 | conditionalExpr->get_arg1()->accept( *this ); |
---|
[6c4ff37] | 625 | output << " ? "; |
---|
[51587aa] | 626 | conditionalExpr->get_arg2()->accept( *this ); |
---|
[6c4ff37] | 627 | output << " : "; |
---|
[51587aa] | 628 | conditionalExpr->get_arg3()->accept( *this ); |
---|
[6c4ff37] | 629 | output << ")"; |
---|
[51587aa] | 630 | } |
---|
[71f4e4f] | 631 | |
---|
[8688ce1] | 632 | void CodeGenerator::visit( CommaExpr * commaExpr ) { |
---|
[e04ef3a] | 633 | extension( commaExpr ); |
---|
[6c4ff37] | 634 | output << "("; |
---|
[51587aa] | 635 | commaExpr->get_arg1()->accept( *this ); |
---|
[6c4ff37] | 636 | output << " , "; |
---|
[51587aa] | 637 | commaExpr->get_arg2()->accept( *this ); |
---|
[6c4ff37] | 638 | output << ")"; |
---|
[51587aa] | 639 | } |
---|
[71f4e4f] | 640 | |
---|
[8688ce1] | 641 | void CodeGenerator::visit( TupleExpr * tupleExpr ) {} |
---|
[71f4e4f] | 642 | |
---|
[8688ce1] | 643 | void CodeGenerator::visit( TypeExpr * typeExpr ) {} |
---|
[2b6c1e0] | 644 | |
---|
[8688ce1] | 645 | void CodeGenerator::visit( AsmExpr * asmExpr ) { |
---|
[7f5566b] | 646 | if ( asmExpr->get_inout() ) { |
---|
| 647 | output << "[ "; |
---|
| 648 | asmExpr->get_inout()->accept( *this ); |
---|
| 649 | output << " ] "; |
---|
| 650 | } // if |
---|
| 651 | asmExpr->get_constraint()->accept( *this ); |
---|
| 652 | output << " ( "; |
---|
| 653 | asmExpr->get_operand()->accept( *this ); |
---|
| 654 | output << " )"; |
---|
| 655 | } |
---|
| 656 | |
---|
[6eb8948] | 657 | void CodeGenerator::visit( StmtExpr * stmtExpr ) { |
---|
| 658 | output << "("; |
---|
| 659 | stmtExpr->get_statements()->accept( *this ); |
---|
| 660 | output << ")"; |
---|
| 661 | } |
---|
| 662 | |
---|
[51587aa] | 663 | //*** Statements |
---|
[8688ce1] | 664 | void CodeGenerator::visit( CompoundStmt * compoundStmt ) { |
---|
[51587aa] | 665 | std::list<Statement*> ks = compoundStmt->get_kids(); |
---|
[2b6c1e0] | 666 | output << "{" << endl; |
---|
[51587aa] | 667 | |
---|
[2b6c1e0] | 668 | cur_indent += CodeGenerator::tabsize; |
---|
[51587aa] | 669 | |
---|
[7f5566b] | 670 | for ( std::list<Statement *>::iterator i = ks.begin(); i != ks.end(); i++ ) { |
---|
[cda48b6] | 671 | output << indent << printLabels( (*i)->get_labels() ); |
---|
[7f5566b] | 672 | (*i)->accept( *this ); |
---|
[2b6c1e0] | 673 | |
---|
[6c4ff37] | 674 | output << endl; |
---|
[2b6c1e0] | 675 | if ( wantSpacing( *i ) ) { |
---|
| 676 | output << endl; |
---|
[3778cb2] | 677 | } // if |
---|
[8688ce1] | 678 | } // for |
---|
[71f4e4f] | 679 | cur_indent -= CodeGenerator::tabsize; |
---|
[51587aa] | 680 | |
---|
[cda48b6] | 681 | output << indent << "}"; |
---|
[51587aa] | 682 | } |
---|
| 683 | |
---|
[8688ce1] | 684 | void CodeGenerator::visit( ExprStmt * exprStmt ) { |
---|
[6c4ff37] | 685 | assert( exprStmt ); |
---|
[321a2481] | 686 | // cast the top-level expression to void to reduce gcc warnings. |
---|
| 687 | Expression * expr = new CastExpr( exprStmt->get_expr() ); |
---|
| 688 | expr->accept( *this ); |
---|
| 689 | output << ";"; |
---|
[51587aa] | 690 | } |
---|
| 691 | |
---|
[8688ce1] | 692 | void CodeGenerator::visit( AsmStmt * asmStmt ) { |
---|
[7f5566b] | 693 | output << "asm "; |
---|
| 694 | if ( asmStmt->get_voltile() ) output << "volatile "; |
---|
| 695 | if ( ! asmStmt->get_gotolabels().empty() ) output << "goto "; |
---|
| 696 | output << "( "; |
---|
| 697 | if ( asmStmt->get_instruction() ) asmStmt->get_instruction()->accept( *this ); |
---|
| 698 | output << " : "; |
---|
| 699 | genCommaList( asmStmt->get_output().begin(), asmStmt->get_output().end() ); |
---|
| 700 | output << " : "; |
---|
| 701 | genCommaList( asmStmt->get_input().begin(), asmStmt->get_input().end() ); |
---|
| 702 | output << " : "; |
---|
| 703 | genCommaList( asmStmt->get_clobber().begin(), asmStmt->get_clobber().end() ); |
---|
| 704 | if ( ! asmStmt->get_gotolabels().empty() ) { |
---|
| 705 | output << " : "; |
---|
| 706 | for ( std::list<Label>::iterator begin = asmStmt->get_gotolabels().begin();; ) { |
---|
| 707 | output << *begin++; |
---|
| 708 | if ( begin == asmStmt->get_gotolabels().end() ) break; |
---|
| 709 | output << ", "; |
---|
| 710 | } // for |
---|
| 711 | } // if |
---|
| 712 | output << " );" ; |
---|
| 713 | } |
---|
| 714 | |
---|
[8688ce1] | 715 | void CodeGenerator::visit( IfStmt * ifStmt ) { |
---|
[7f5566b] | 716 | output << "if ( "; |
---|
| 717 | ifStmt->get_condition()->accept( *this ); |
---|
| 718 | output << " ) "; |
---|
[51587aa] | 719 | |
---|
[7f5566b] | 720 | ifStmt->get_thenPart()->accept( *this ); |
---|
[51587aa] | 721 | |
---|
| 722 | if ( ifStmt->get_elsePart() != 0) { |
---|
[2b6c1e0] | 723 | output << " else "; |
---|
[7f5566b] | 724 | ifStmt->get_elsePart()->accept( *this ); |
---|
[51587aa] | 725 | } // if |
---|
| 726 | } |
---|
| 727 | |
---|
[8688ce1] | 728 | void CodeGenerator::visit( SwitchStmt * switchStmt ) { |
---|
[7f5566b] | 729 | output << "switch ( " ; |
---|
| 730 | switchStmt->get_condition()->accept( *this ); |
---|
| 731 | output << " ) "; |
---|
[71f4e4f] | 732 | |
---|
[2b6c1e0] | 733 | output << "{" << std::endl; |
---|
[6c4ff37] | 734 | cur_indent += CodeGenerator::tabsize; |
---|
[8688ce1] | 735 | acceptAll( switchStmt->get_statements(), *this ); |
---|
[6c4ff37] | 736 | cur_indent -= CodeGenerator::tabsize; |
---|
[cda48b6] | 737 | output << indent << "}"; |
---|
[51587aa] | 738 | } |
---|
| 739 | |
---|
[8688ce1] | 740 | void CodeGenerator::visit( CaseStmt * caseStmt ) { |
---|
[cda48b6] | 741 | output << indent; |
---|
[eb3261f] | 742 | if ( caseStmt->isDefault()) { |
---|
[2b6c1e0] | 743 | output << "default"; |
---|
[eb3261f] | 744 | } else { |
---|
[2b6c1e0] | 745 | output << "case "; |
---|
[7f5566b] | 746 | caseStmt->get_condition()->accept( *this ); |
---|
[17cd4eb] | 747 | } // if |
---|
[6c4ff37] | 748 | output << ":\n"; |
---|
[71f4e4f] | 749 | |
---|
[51587aa] | 750 | std::list<Statement *> sts = caseStmt->get_statements(); |
---|
| 751 | |
---|
[6c4ff37] | 752 | cur_indent += CodeGenerator::tabsize; |
---|
[51587aa] | 753 | for ( std::list<Statement *>::iterator i = sts.begin(); i != sts.end(); i++) { |
---|
[cda48b6] | 754 | output << indent << printLabels( (*i)->get_labels() ) ; |
---|
[7f5566b] | 755 | (*i)->accept( *this ); |
---|
[6c4ff37] | 756 | output << endl; |
---|
[3778cb2] | 757 | } // for |
---|
[6c4ff37] | 758 | cur_indent -= CodeGenerator::tabsize; |
---|
[51587aa] | 759 | } |
---|
| 760 | |
---|
[8688ce1] | 761 | void CodeGenerator::visit( BranchStmt * branchStmt ) { |
---|
[51587aa] | 762 | switch ( branchStmt->get_type()) { |
---|
| 763 | case BranchStmt::Goto: |
---|
| 764 | if ( ! branchStmt->get_target().empty() ) |
---|
[6c4ff37] | 765 | output << "goto " << branchStmt->get_target(); |
---|
[71f4e4f] | 766 | else { |
---|
[51587aa] | 767 | if ( branchStmt->get_computedTarget() != 0 ) { |
---|
[6c4ff37] | 768 | output << "goto *"; |
---|
[51587aa] | 769 | branchStmt->get_computedTarget()->accept( *this ); |
---|
| 770 | } // if |
---|
| 771 | } // if |
---|
| 772 | break; |
---|
| 773 | case BranchStmt::Break: |
---|
[6c4ff37] | 774 | output << "break"; |
---|
[51587aa] | 775 | break; |
---|
| 776 | case BranchStmt::Continue: |
---|
[6c4ff37] | 777 | output << "continue"; |
---|
[51587aa] | 778 | break; |
---|
[3778cb2] | 779 | } // switch |
---|
[2b6c1e0] | 780 | output << ";"; |
---|
[51587aa] | 781 | } |
---|
| 782 | |
---|
| 783 | |
---|
[8688ce1] | 784 | void CodeGenerator::visit( ReturnStmt * returnStmt ) { |
---|
[6c4ff37] | 785 | output << "return "; |
---|
[4b2589a] | 786 | maybeAccept( returnStmt->get_expr(), *this ); |
---|
[6c4ff37] | 787 | output << ";"; |
---|
[51587aa] | 788 | } |
---|
| 789 | |
---|
[8688ce1] | 790 | void CodeGenerator::visit( WhileStmt * whileStmt ) { |
---|
[321a2481] | 791 | if ( whileStmt->get_isDoWhile() ) { |
---|
[6c4ff37] | 792 | output << "do" ; |
---|
[321a2481] | 793 | } else { |
---|
[6c4ff37] | 794 | output << "while (" ; |
---|
[7f5566b] | 795 | whileStmt->get_condition()->accept( *this ); |
---|
[6c4ff37] | 796 | output << ")"; |
---|
[51587aa] | 797 | } // if |
---|
[2b6c1e0] | 798 | output << " "; |
---|
[51587aa] | 799 | |
---|
[2b6c1e0] | 800 | output << CodeGenerator::printLabels( whileStmt->get_body()->get_labels() ); |
---|
[51587aa] | 801 | whileStmt->get_body()->accept( *this ); |
---|
| 802 | |
---|
[cda48b6] | 803 | output << indent; |
---|
[51587aa] | 804 | |
---|
| 805 | if ( whileStmt->get_isDoWhile() ) { |
---|
[6c4ff37] | 806 | output << " while (" ; |
---|
[7f5566b] | 807 | whileStmt->get_condition()->accept( *this ); |
---|
[6c4ff37] | 808 | output << ");"; |
---|
[51587aa] | 809 | } // if |
---|
| 810 | } |
---|
| 811 | |
---|
[8688ce1] | 812 | void CodeGenerator::visit( ForStmt * forStmt ) { |
---|
[8e9cbb2] | 813 | // initialization is always hoisted, so don't bother doing anything with that |
---|
[145f1fc] | 814 | output << "for (;"; |
---|
[51587aa] | 815 | |
---|
[321a2481] | 816 | if ( forStmt->get_condition() != 0 ) { |
---|
[51587aa] | 817 | forStmt->get_condition()->accept( *this ); |
---|
[3778cb2] | 818 | } // if |
---|
[6c4ff37] | 819 | output << ";"; |
---|
[51587aa] | 820 | |
---|
[321a2481] | 821 | if ( forStmt->get_increment() != 0 ) { |
---|
| 822 | // cast the top-level expression to void to reduce gcc warnings. |
---|
| 823 | Expression * expr = new CastExpr( forStmt->get_increment() ); |
---|
| 824 | expr->accept( *this ); |
---|
[3778cb2] | 825 | } // if |
---|
[2b6c1e0] | 826 | output << ") "; |
---|
[51587aa] | 827 | |
---|
| 828 | if ( forStmt->get_body() != 0 ) { |
---|
[2b6c1e0] | 829 | output << CodeGenerator::printLabels( forStmt->get_body()->get_labels() ); |
---|
[51587aa] | 830 | forStmt->get_body()->accept( *this ); |
---|
| 831 | } // if |
---|
| 832 | } |
---|
| 833 | |
---|
[8688ce1] | 834 | void CodeGenerator::visit( NullStmt * nullStmt ) { |
---|
[cda48b6] | 835 | //output << indent << CodeGenerator::printLabels( nullStmt->get_labels() ); |
---|
[6c4ff37] | 836 | output << "/* null statement */ ;"; |
---|
[51587aa] | 837 | } |
---|
| 838 | |
---|
[8688ce1] | 839 | void CodeGenerator::visit( DeclStmt * declStmt ) { |
---|
[51587aa] | 840 | declStmt->get_decl()->accept( *this ); |
---|
[71f4e4f] | 841 | |
---|
[51587aa] | 842 | if ( doSemicolon( declStmt->get_decl() ) ) { |
---|
[6c4ff37] | 843 | output << ";"; |
---|
[51587aa] | 844 | } // if |
---|
| 845 | } |
---|
| 846 | |
---|
[8688ce1] | 847 | void CodeGenerator::handleStorageClass( Declaration * decl ) { |
---|
[51587aa] | 848 | switch ( decl->get_storageClass() ) { |
---|
[68cd1ce] | 849 | case DeclarationNode::Extern: |
---|
[6c4ff37] | 850 | output << "extern "; |
---|
[51587aa] | 851 | break; |
---|
[68cd1ce] | 852 | case DeclarationNode::Static: |
---|
[6c4ff37] | 853 | output << "static "; |
---|
[51587aa] | 854 | break; |
---|
[68cd1ce] | 855 | case DeclarationNode::Auto: |
---|
[51587aa] | 856 | // silently drop storage class |
---|
| 857 | break; |
---|
[68cd1ce] | 858 | case DeclarationNode::Register: |
---|
[6c4ff37] | 859 | output << "register "; |
---|
[51587aa] | 860 | break; |
---|
[68cd1ce] | 861 | case DeclarationNode::Inline: |
---|
[de62360d] | 862 | output << "inline "; |
---|
[f38c8d9] | 863 | break; |
---|
[68cd1ce] | 864 | case DeclarationNode::Fortran: |
---|
| 865 | output << "fortran "; |
---|
| 866 | break; |
---|
| 867 | case DeclarationNode::Noreturn: |
---|
| 868 | output << "_Noreturn "; |
---|
| 869 | break; |
---|
| 870 | case DeclarationNode::Threadlocal: |
---|
| 871 | output << "_Thread_local "; |
---|
| 872 | break; |
---|
| 873 | case DeclarationNode::NoStorageClass: |
---|
[f38c8d9] | 874 | break; |
---|
[843054c2] | 875 | } // switch |
---|
[51587aa] | 876 | } |
---|
[51b7345] | 877 | } // namespace CodeGen |
---|
[51587aa] | 878 | |
---|
| 879 | // Local Variables: // |
---|
| 880 | // tab-width: 4 // |
---|
| 881 | // mode: c++ // |
---|
| 882 | // compile-command: "make install" // |
---|
| 883 | // End: // |
---|