[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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[6e300d9] | 11 | // Last Modified By : Andrew Beach |
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[29cf9c8] | 12 | // Last Modified On : Tus May 9 16:50:00 2017 |
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| 13 | // Update Count : 484 |
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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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[29cf9c8] | 44 | // Pseudo Function: output << lineDirective(currentNode); |
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[4810867] | 45 | struct lineDirective { |
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| 46 | CodeLocation const & loc; |
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| 47 | lineDirective(CodeLocation const & location) : loc(location) {} |
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| 48 | lineDirective(BaseSyntaxNode const * node) : loc(node->location) {} |
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| 49 | }; |
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| 50 | std::ostream & operator<<(std::ostream & out, lineDirective const & ld) { |
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| 51 | if (ld.loc.isSet()) |
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| 52 | return out << "\n# " << ld.loc.linenumber << " \"" |
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| 53 | << ld.loc.filename << "\"\n"; |
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| 54 | return out << "\n// Unset Location\n"; |
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| 55 | } |
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| 56 | |
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[145f1fc] | 57 | // the kinds of statements that would ideally be followed by whitespace |
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[2b6c1e0] | 58 | bool wantSpacing( Statement * stmt) { |
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| 59 | return dynamic_cast< IfStmt * >( stmt ) || dynamic_cast< CompoundStmt * >( stmt ) || |
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[08061589] | 60 | dynamic_cast< WhileStmt * >( stmt ) || dynamic_cast< ForStmt * >( stmt ) || dynamic_cast< SwitchStmt *>( stmt ); |
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[2b6c1e0] | 61 | } |
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| 62 | |
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[8688ce1] | 63 | void CodeGenerator::extension( Expression * expr ) { |
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[8e9cbb2] | 64 | if ( expr->get_extension() ) { |
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| 65 | output << "__extension__ "; |
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| 66 | } // if |
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| 67 | } // extension |
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| 68 | |
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[8688ce1] | 69 | void CodeGenerator::extension( Declaration * decl ) { |
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[8e9cbb2] | 70 | if ( decl->get_extension() ) { |
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| 71 | output << "__extension__ "; |
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| 72 | } // if |
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| 73 | } // extension |
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| 74 | |
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[58dd019] | 75 | void CodeGenerator::asmName( DeclarationWithType * decl ) { |
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| 76 | if ( ConstantExpr * asmName = decl->get_asmName() ) { |
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| 77 | output << " asm ( " << asmName->get_constant()->get_value() << " )"; |
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| 78 | } // if |
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| 79 | } // extension |
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| 80 | |
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[888cbe4] | 81 | ostream & CodeGenerator::Indenter::operator()( ostream & output ) const { |
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[cda48b6] | 82 | return output << string( cg.cur_indent, ' ' ); |
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| 83 | } |
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| 84 | |
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[888cbe4] | 85 | ostream & operator<<( ostream & output, const CodeGenerator::Indenter &indent ) { |
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[cda48b6] | 86 | return indent( output ); |
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| 87 | } |
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[51587aa] | 88 | |
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[888cbe4] | 89 | CodeGenerator::LabelPrinter & CodeGenerator::LabelPrinter::operator()( std::list< Label > & l ) { |
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| 90 | labels = &l; |
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| 91 | return *this; |
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| 92 | } |
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| 93 | |
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[8688ce1] | 94 | ostream & operator<<( ostream & output, CodeGenerator::LabelPrinter & printLabels ) { |
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[888cbe4] | 95 | std::list< Label > & labs = *printLabels.labels; |
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| 96 | // l.unique(); // assumes a sorted list. Why not use set? Does order matter? |
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| 97 | for ( Label & l : labs ) { |
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| 98 | output << l.get_name() + ": "; |
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| 99 | printLabels.cg.genAttributes( l.get_attributes() ); |
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[8688ce1] | 100 | } // for |
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[888cbe4] | 101 | return output; |
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| 102 | } |
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| 103 | |
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[e39241b] | 104 | CodeGenerator::CodeGenerator( std::ostream & os, bool pretty, bool genC ) : indent( *this), cur_indent( 0 ), insideFunction( false ), output( os ), printLabels( *this ), pretty( pretty ), genC( genC ) {} |
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[cda48b6] | 105 | |
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[8688ce1] | 106 | CodeGenerator::CodeGenerator( std::ostream & os, std::string init, int indentation, bool infunp ) |
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[888cbe4] | 107 | : indent( *this), cur_indent( indentation ), insideFunction( infunp ), output( os ), printLabels( *this ) { |
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[6c4ff37] | 108 | //output << std::string( init ); |
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[51587aa] | 109 | } |
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| 110 | |
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[8688ce1] | 111 | CodeGenerator::CodeGenerator( std::ostream & os, char * init, int indentation, bool infunp ) |
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[888cbe4] | 112 | : indent( *this ), cur_indent( indentation ), insideFunction( infunp ), output( os ), printLabels( *this ) { |
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[6c4ff37] | 113 | //output << std::string( init ); |
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[51587aa] | 114 | } |
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| 115 | |
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[486341f] | 116 | string CodeGenerator::mangleName( DeclarationWithType * decl ) { |
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[35b1bf4] | 117 | if ( pretty ) return decl->get_name(); |
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[51587aa] | 118 | if ( decl->get_mangleName() != "" ) { |
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[f326f99] | 119 | // need to incorporate scope level in order to differentiate names for destructors |
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| 120 | return decl->get_scopedMangleName(); |
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[51587aa] | 121 | } else { |
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| 122 | return decl->get_name(); |
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| 123 | } // if |
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| 124 | } |
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[94b4364] | 125 | |
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[44a81853] | 126 | void CodeGenerator::genAttributes( list< Attribute * > & attributes ) { |
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| 127 | if ( attributes.empty() ) return; |
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| 128 | output << "__attribute__ (("; |
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| 129 | for ( list< Attribute * >::iterator attr( attributes.begin() );; ) { |
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| 130 | output << (*attr)->get_name(); |
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| 131 | if ( ! (*attr)->get_parameters().empty() ) { |
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| 132 | output << "("; |
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| 133 | genCommaList( (*attr)->get_parameters().begin(), (*attr)->get_parameters().end() ); |
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| 134 | output << ")"; |
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| 135 | } // if |
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| 136 | if ( ++attr == attributes.end() ) break; |
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| 137 | output << ","; // separator |
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| 138 | } // for |
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| 139 | output << ")) "; |
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| 140 | } // CodeGenerator::genAttributes |
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[7baed7d] | 141 | |
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| 142 | |
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[4810867] | 143 | // *** Declarations |
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[8688ce1] | 144 | void CodeGenerator::visit( FunctionDecl * functionDecl ) { |
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[29cf9c8] | 145 | output << lineDirective( functionDecl ); |
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| 146 | |
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[8e9cbb2] | 147 | extension( functionDecl ); |
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[7baed7d] | 148 | genAttributes( functionDecl->get_attributes() ); |
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| 149 | |
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[51587aa] | 150 | handleStorageClass( functionDecl ); |
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[6e8bd43] | 151 | functionDecl->get_funcSpec().print( output ); |
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[dd020c0] | 152 | |
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[e39241b] | 153 | output << genType( functionDecl->get_functionType(), mangleName( functionDecl ), pretty, genC ); |
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[51587aa] | 154 | |
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[58dd019] | 155 | asmName( functionDecl ); |
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| 156 | |
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[51587aa] | 157 | // acceptAll( functionDecl->get_oldDecls(), *this ); |
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| 158 | if ( functionDecl->get_statements() ) { |
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[7f5566b] | 159 | functionDecl->get_statements()->accept( *this ); |
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[51587aa] | 160 | } // if |
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| 161 | } |
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| 162 | |
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[8688ce1] | 163 | void CodeGenerator::visit( ObjectDecl * objectDecl ) { |
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[e39241b] | 164 | if (objectDecl->get_name().empty() && genC ) { |
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| 165 | // only generate an anonymous name when generating C code, otherwise it clutters the output too much |
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[d9c8a59] | 166 | static UniqueName name = { "__anonymous_object" }; |
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| 167 | objectDecl->set_name( name.newName() ); |
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| 168 | } |
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| 169 | |
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[29cf9c8] | 170 | output << lineDirective( objectDecl ); |
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| 171 | |
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[8e9cbb2] | 172 | extension( objectDecl ); |
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[f9cebb5] | 173 | genAttributes( objectDecl->get_attributes() ); |
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| 174 | |
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[51587aa] | 175 | handleStorageClass( objectDecl ); |
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[e39241b] | 176 | output << genType( objectDecl->get_type(), mangleName( objectDecl ), pretty, genC ); |
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[71f4e4f] | 177 | |
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[58dd019] | 178 | asmName( objectDecl ); |
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| 179 | |
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[51587aa] | 180 | if ( objectDecl->get_init() ) { |
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[6c4ff37] | 181 | output << " = "; |
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[51587aa] | 182 | objectDecl->get_init()->accept( *this ); |
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| 183 | } // if |
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[3778cb2] | 184 | |
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[51587aa] | 185 | if ( objectDecl->get_bitfieldWidth() ) { |
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[6c4ff37] | 186 | output << ":"; |
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[51587aa] | 187 | objectDecl->get_bitfieldWidth()->accept( *this ); |
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| 188 | } // if |
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| 189 | } |
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| 190 | |
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[5f642e38] | 191 | void CodeGenerator::handleAggregate( AggregateDecl * aggDecl, const std::string & kind ) { |
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[c0aa336] | 192 | genAttributes( aggDecl->get_attributes() ); |
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[35b1bf4] | 193 | |
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[e39241b] | 194 | if( ! aggDecl->get_parameters().empty() && ! genC ) { |
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| 195 | // assertf( ! genC, "Aggregate type parameters should not reach code generation." ); |
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| 196 | output << "forall("; |
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| 197 | genCommaList( aggDecl->get_parameters().begin(), aggDecl->get_parameters().end() ); |
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| 198 | output << ")" << endl; |
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| 199 | } |
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| 200 | |
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[29cf9c8] | 201 | output << kind; |
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[51587aa] | 202 | if ( aggDecl->get_name() != "" ) |
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[6c4ff37] | 203 | output << aggDecl->get_name(); |
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[71f4e4f] | 204 | |
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[2c57025] | 205 | if ( aggDecl->has_body() ) { |
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| 206 | std::list< Declaration * > & memb = aggDecl->get_members(); |
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[94b4364] | 207 | output << " {" << endl; |
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[51587aa] | 208 | |
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[71f4e4f] | 209 | cur_indent += CodeGenerator::tabsize; |
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[3778cb2] | 210 | for ( std::list< Declaration* >::iterator i = memb.begin(); i != memb.end(); i++ ) { |
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[4810867] | 211 | output << lineDirective( *i ) << indent; |
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[7f5566b] | 212 | (*i)->accept( *this ); |
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[6c4ff37] | 213 | output << ";" << endl; |
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[3778cb2] | 214 | } // for |
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[51587aa] | 215 | |
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[71f4e4f] | 216 | cur_indent -= CodeGenerator::tabsize; |
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[51587aa] | 217 | |
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[cda48b6] | 218 | output << indent << "}"; |
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[17cd4eb] | 219 | } // if |
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[51587aa] | 220 | } |
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[17cd4eb] | 221 | |
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[8688ce1] | 222 | void CodeGenerator::visit( StructDecl * structDecl ) { |
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[29cf9c8] | 223 | output << lineDirective( structDecl ); |
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| 224 | |
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[8e9cbb2] | 225 | extension( structDecl ); |
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[5f642e38] | 226 | handleAggregate( structDecl, "struct " ); |
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[51587aa] | 227 | } |
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[17cd4eb] | 228 | |
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[8688ce1] | 229 | void CodeGenerator::visit( UnionDecl * unionDecl ) { |
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[29cf9c8] | 230 | output << lineDirective( unionDecl ); |
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| 231 | |
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[8e9cbb2] | 232 | extension( unionDecl ); |
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[5f642e38] | 233 | handleAggregate( unionDecl, "union " ); |
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[51587aa] | 234 | } |
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[71f4e4f] | 235 | |
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[8688ce1] | 236 | void CodeGenerator::visit( EnumDecl * enumDecl ) { |
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[8e9cbb2] | 237 | extension( enumDecl ); |
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[4810867] | 238 | output << lineDirective ( enumDecl ); |
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[6c4ff37] | 239 | output << "enum "; |
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[c0aa336] | 240 | genAttributes( enumDecl->get_attributes() ); |
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[51587aa] | 241 | |
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[8e9cbb2] | 242 | if ( enumDecl->get_name() != "" ) |
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| 243 | output << enumDecl->get_name(); |
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[71f4e4f] | 244 | |
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[8e9cbb2] | 245 | std::list< Declaration* > &memb = enumDecl->get_members(); |
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[51587aa] | 246 | |
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| 247 | if ( ! memb.empty() ) { |
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[cda48b6] | 248 | output << " {" << endl; |
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[51587aa] | 249 | |
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[71f4e4f] | 250 | cur_indent += CodeGenerator::tabsize; |
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[51587aa] | 251 | for ( std::list< Declaration* >::iterator i = memb.begin(); i != memb.end(); i++) { |
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[8688ce1] | 252 | ObjectDecl * obj = dynamic_cast< ObjectDecl* >( *i ); |
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[51587aa] | 253 | assert( obj ); |
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[4810867] | 254 | output << lineDirective( obj ) << indent << mangleName( obj ); |
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[51587aa] | 255 | if ( obj->get_init() ) { |
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[6c4ff37] | 256 | output << " = "; |
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[7f5566b] | 257 | obj->get_init()->accept( *this ); |
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[51587aa] | 258 | } // if |
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[6c4ff37] | 259 | output << "," << endl; |
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[51587aa] | 260 | } // for |
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| 261 | |
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[71f4e4f] | 262 | cur_indent -= CodeGenerator::tabsize; |
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[51587aa] | 263 | |
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[cda48b6] | 264 | output << indent << "}"; |
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[51587aa] | 265 | } // if |
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| 266 | } |
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[71f4e4f] | 267 | |
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[8688ce1] | 268 | void CodeGenerator::visit( TraitDecl * traitDecl ) {} |
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[71f4e4f] | 269 | |
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[8688ce1] | 270 | void CodeGenerator::visit( TypedefDecl * typeDecl ) { |
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[e39241b] | 271 | assertf( ! genC, "Typedefs are removed and substituted in earlier passes." ); |
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[4810867] | 272 | output << lineDirective( typeDecl ); |
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[e39241b] | 273 | output << "typedef "; |
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| 274 | output << genType( typeDecl->get_base(), typeDecl->get_name(), pretty, genC ) << endl; |
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[51587aa] | 275 | } |
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[71f4e4f] | 276 | |
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[8688ce1] | 277 | void CodeGenerator::visit( TypeDecl * typeDecl ) { |
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[e39241b] | 278 | if ( genC ) { |
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| 279 | // really, we should mutate this into something that isn't a TypeDecl but that requires large-scale changes, |
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| 280 | // still to be done |
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| 281 | extension( typeDecl ); |
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| 282 | output << "extern unsigned long " << typeDecl->get_name(); |
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| 283 | if ( typeDecl->get_base() ) { |
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| 284 | output << " = sizeof( " << genType( typeDecl->get_base(), "", pretty, genC ) << " )"; |
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| 285 | } // if |
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| 286 | } else { |
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[bdd0755] | 287 | output << typeDecl->genTypeString() << " " << typeDecl->get_name(); |
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| 288 | if ( typeDecl->get_kind() != TypeDecl::Any && typeDecl->get_sized() ) { |
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| 289 | output << " | sized(" << typeDecl->get_name() << ")"; |
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| 290 | } |
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[e39241b] | 291 | if ( ! typeDecl->get_assertions().empty() ) { |
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| 292 | output << " | { "; |
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| 293 | genCommaList( typeDecl->get_assertions().begin(), typeDecl->get_assertions().end() ); |
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| 294 | output << " }"; |
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| 295 | } |
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| 296 | } |
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[51587aa] | 297 | } |
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| 298 | |
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[e45215c] | 299 | void CodeGenerator::printDesignators( std::list< Expression * > & designators ) { |
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| 300 | typedef std::list< Expression * > DesignatorList; |
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| 301 | if ( designators.size() == 0 ) return; |
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| 302 | for ( DesignatorList::iterator iter = designators.begin(); iter != designators.end(); ++iter ) { |
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[8a4da06] | 303 | if ( dynamic_cast< NameExpr * >( *iter ) ) { |
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[f32c7f4] | 304 | // if expression is a name, then initializing aggregate member |
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| 305 | output << "."; |
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| 306 | (*iter)->accept( *this ); |
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| 307 | } else { |
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| 308 | // if not a simple name, it has to be a constant expression, i.e. an array designator |
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[e45215c] | 309 | output << "["; |
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| 310 | (*iter)->accept( *this ); |
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| 311 | output << "]"; |
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[3778cb2] | 312 | } // if |
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| 313 | } // for |
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[e45215c] | 314 | output << " = "; |
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| 315 | } |
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| 316 | |
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[8688ce1] | 317 | void CodeGenerator::visit( SingleInit * init ) { |
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[e45215c] | 318 | printDesignators( init->get_designators() ); |
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[51587aa] | 319 | init->get_value()->accept( *this ); |
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| 320 | } |
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| 321 | |
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[8688ce1] | 322 | void CodeGenerator::visit( ListInit * init ) { |
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[e45215c] | 323 | printDesignators( init->get_designators() ); |
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[6c4ff37] | 324 | output << "{ "; |
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[4d2434a] | 325 | if ( init->begin() == init->end() ) { |
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[8e9cbb2] | 326 | // illegal to leave initializer list empty for scalar initializers, but always legal to have 0 |
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[5b40f30] | 327 | output << "0"; |
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| 328 | } else { |
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[4d2434a] | 329 | genCommaList( init->begin(), init->end() ); |
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[8688ce1] | 330 | } // if |
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[6c4ff37] | 331 | output << " }"; |
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[51587aa] | 332 | } |
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| 333 | |
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[fc638d2] | 334 | void CodeGenerator::visit( ConstructorInit * init ){ |
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[e39241b] | 335 | assertf( ! genC, "ConstructorInit nodes should not reach code generation." ); |
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| 336 | // xxx - generate something reasonable for constructor/destructor pairs |
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| 337 | output << "<ctorinit>"; |
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[fc638d2] | 338 | } |
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| 339 | |
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[8688ce1] | 340 | void CodeGenerator::visit( Constant * constant ) { |
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[6c4ff37] | 341 | output << constant->get_value() ; |
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[51587aa] | 342 | } |
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| 343 | |
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[4810867] | 344 | // *** Expressions |
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[8688ce1] | 345 | void CodeGenerator::visit( ApplicationExpr * applicationExpr ) { |
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[e04ef3a] | 346 | extension( applicationExpr ); |
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[8688ce1] | 347 | if ( VariableExpr * varExpr = dynamic_cast< VariableExpr* >( applicationExpr->get_function() ) ) { |
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[51587aa] | 348 | OperatorInfo opInfo; |
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| 349 | if ( varExpr->get_var()->get_linkage() == LinkageSpec::Intrinsic && operatorLookup( varExpr->get_var()->get_name(), opInfo ) ) { |
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| 350 | std::list< Expression* >::iterator arg = applicationExpr->get_args().begin(); |
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| 351 | switch ( opInfo.type ) { |
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| 352 | case OT_PREFIXASSIGN: |
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| 353 | case OT_POSTFIXASSIGN: |
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| 354 | case OT_INFIXASSIGN: |
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[356189a] | 355 | case OT_CTOR: |
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[c2ce2350] | 356 | case OT_DTOR: |
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[51587aa] | 357 | { |
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| 358 | assert( arg != applicationExpr->get_args().end() ); |
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[8688ce1] | 359 | if ( AddressExpr * addrExpr = dynamic_cast< AddressExpr * >( *arg ) ) { |
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[356189a] | 360 | // remove & from first assignment/ctor argument |
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[51587aa] | 361 | *arg = addrExpr->get_arg(); |
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| 362 | } else { |
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[356189a] | 363 | // no address-of operator, so must be a pointer - add dereference |
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[066d77a] | 364 | // NOTE: if the assertion starts to trigger, check that the application expr isn't being shared. |
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| 365 | // Since its arguments are modified here, this assertion most commonly triggers when the application |
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| 366 | // is visited multiple times. |
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[8688ce1] | 367 | UntypedExpr * newExpr = new UntypedExpr( new NameExpr( "*?" ) ); |
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[51587aa] | 368 | newExpr->get_args().push_back( *arg ); |
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[906e24d] | 369 | Type * type = InitTweak::getPointerBase( (*arg)->get_result() ); |
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[066d77a] | 370 | assertf( type, "First argument to a derefence must be a pointer. Ensure that expressions are not being shared." ); |
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[906e24d] | 371 | newExpr->set_result( type->clone() ); |
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[51587aa] | 372 | *arg = newExpr; |
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| 373 | } // if |
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| 374 | break; |
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| 375 | } |
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[71f4e4f] | 376 | |
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[51587aa] | 377 | default: |
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| 378 | // do nothing |
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| 379 | ; |
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[3778cb2] | 380 | } // switch |
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[71f4e4f] | 381 | |
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[51587aa] | 382 | switch ( opInfo.type ) { |
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| 383 | case OT_INDEX: |
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| 384 | assert( applicationExpr->get_args().size() == 2 ); |
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| 385 | (*arg++)->accept( *this ); |
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[6c4ff37] | 386 | output << "["; |
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[51587aa] | 387 | (*arg)->accept( *this ); |
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[6c4ff37] | 388 | output << "]"; |
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[51587aa] | 389 | break; |
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[71f4e4f] | 390 | |
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[51587aa] | 391 | case OT_CALL: |
---|
[356189a] | 392 | // there are no intrinsic definitions of the function call operator |
---|
[51587aa] | 393 | assert( false ); |
---|
| 394 | break; |
---|
[71f4e4f] | 395 | |
---|
[f1e012b] | 396 | case OT_CTOR: |
---|
[c2ce2350] | 397 | case OT_DTOR: |
---|
[356189a] | 398 | if ( applicationExpr->get_args().size() == 1 ) { |
---|
[8e9cbb2] | 399 | // the expression fed into a single parameter constructor or destructor may contain side |
---|
| 400 | // effects, so must still output this expression |
---|
[64071c2] | 401 | output << "("; |
---|
[356189a] | 402 | (*arg++)->accept( *this ); |
---|
[64071c2] | 403 | output << ") /* " << opInfo.inputName << " */"; |
---|
[356189a] | 404 | } else if ( applicationExpr->get_args().size() == 2 ) { |
---|
[c2ce2350] | 405 | // intrinsic two parameter constructors are essentially bitwise assignment |
---|
[356189a] | 406 | output << "("; |
---|
| 407 | (*arg++)->accept( *this ); |
---|
| 408 | output << opInfo.symbol; |
---|
| 409 | (*arg)->accept( *this ); |
---|
[c2ce2350] | 410 | output << ") /* " << opInfo.inputName << " */"; |
---|
[356189a] | 411 | } else { |
---|
[c2ce2350] | 412 | // no constructors with 0 or more than 2 parameters |
---|
[356189a] | 413 | assert( false ); |
---|
[8688ce1] | 414 | } // if |
---|
[356189a] | 415 | break; |
---|
[f1e012b] | 416 | |
---|
[51587aa] | 417 | case OT_PREFIX: |
---|
| 418 | case OT_PREFIXASSIGN: |
---|
| 419 | assert( applicationExpr->get_args().size() == 1 ); |
---|
[6c4ff37] | 420 | output << "("; |
---|
| 421 | output << opInfo.symbol; |
---|
[51587aa] | 422 | (*arg)->accept( *this ); |
---|
[6c4ff37] | 423 | output << ")"; |
---|
[51587aa] | 424 | break; |
---|
[71f4e4f] | 425 | |
---|
[51587aa] | 426 | case OT_POSTFIX: |
---|
| 427 | case OT_POSTFIXASSIGN: |
---|
| 428 | assert( applicationExpr->get_args().size() == 1 ); |
---|
| 429 | (*arg)->accept( *this ); |
---|
[6c4ff37] | 430 | output << opInfo.symbol; |
---|
[51587aa] | 431 | break; |
---|
| 432 | |
---|
[f1e012b] | 433 | |
---|
[51587aa] | 434 | case OT_INFIX: |
---|
| 435 | case OT_INFIXASSIGN: |
---|
| 436 | assert( applicationExpr->get_args().size() == 2 ); |
---|
[6c4ff37] | 437 | output << "("; |
---|
[51587aa] | 438 | (*arg++)->accept( *this ); |
---|
[6c4ff37] | 439 | output << opInfo.symbol; |
---|
[51587aa] | 440 | (*arg)->accept( *this ); |
---|
[6c4ff37] | 441 | output << ")"; |
---|
[51587aa] | 442 | break; |
---|
[71f4e4f] | 443 | |
---|
[51587aa] | 444 | case OT_CONSTANT: |
---|
[721f17a] | 445 | case OT_LABELADDRESS: |
---|
| 446 | // there are no intrinsic definitions of 0/1 or label addresses as functions |
---|
[51587aa] | 447 | assert( false ); |
---|
[3778cb2] | 448 | } // switch |
---|
[17cd4eb] | 449 | } else { |
---|
[51587aa] | 450 | varExpr->accept( *this ); |
---|
[6c4ff37] | 451 | output << "("; |
---|
[51587aa] | 452 | genCommaList( applicationExpr->get_args().begin(), applicationExpr->get_args().end() ); |
---|
[6c4ff37] | 453 | output << ")"; |
---|
[17cd4eb] | 454 | } // if |
---|
[51587aa] | 455 | } else { |
---|
| 456 | applicationExpr->get_function()->accept( *this ); |
---|
[6c4ff37] | 457 | output << "("; |
---|
[51587aa] | 458 | genCommaList( applicationExpr->get_args().begin(), applicationExpr->get_args().end() ); |
---|
[6c4ff37] | 459 | output << ")"; |
---|
[51587aa] | 460 | } // if |
---|
| 461 | } |
---|
[71f4e4f] | 462 | |
---|
[8688ce1] | 463 | void CodeGenerator::visit( UntypedExpr * untypedExpr ) { |
---|
[e04ef3a] | 464 | extension( untypedExpr ); |
---|
[8688ce1] | 465 | if ( NameExpr * nameExpr = dynamic_cast< NameExpr* >( untypedExpr->get_function() ) ) { |
---|
[51587aa] | 466 | OperatorInfo opInfo; |
---|
| 467 | if ( operatorLookup( nameExpr->get_name(), opInfo ) ) { |
---|
| 468 | std::list< Expression* >::iterator arg = untypedExpr->get_args().begin(); |
---|
| 469 | switch ( opInfo.type ) { |
---|
| 470 | case OT_INDEX: |
---|
| 471 | assert( untypedExpr->get_args().size() == 2 ); |
---|
| 472 | (*arg++)->accept( *this ); |
---|
[6c4ff37] | 473 | output << "["; |
---|
[51587aa] | 474 | (*arg)->accept( *this ); |
---|
[6c4ff37] | 475 | output << "]"; |
---|
[51587aa] | 476 | break; |
---|
[71f4e4f] | 477 | |
---|
[51587aa] | 478 | case OT_CALL: |
---|
[f1e012b] | 479 | assert( false ); |
---|
| 480 | |
---|
[c2ce2350] | 481 | case OT_CTOR: |
---|
| 482 | case OT_DTOR: |
---|
| 483 | if ( untypedExpr->get_args().size() == 1 ) { |
---|
[8e9cbb2] | 484 | // the expression fed into a single parameter constructor or destructor may contain side |
---|
| 485 | // effects, so must still output this expression |
---|
[64071c2] | 486 | output << "("; |
---|
[c2ce2350] | 487 | (*arg++)->accept( *this ); |
---|
[64071c2] | 488 | output << ") /* " << opInfo.inputName << " */"; |
---|
[c2ce2350] | 489 | } else if ( untypedExpr->get_args().size() == 2 ) { |
---|
| 490 | // intrinsic two parameter constructors are essentially bitwise assignment |
---|
| 491 | output << "("; |
---|
| 492 | (*arg++)->accept( *this ); |
---|
| 493 | output << opInfo.symbol; |
---|
| 494 | (*arg)->accept( *this ); |
---|
| 495 | output << ") /* " << opInfo.inputName << " */"; |
---|
| 496 | } else { |
---|
| 497 | // no constructors with 0 or more than 2 parameters |
---|
| 498 | assert( false ); |
---|
[3778cb2] | 499 | } // if |
---|
[51587aa] | 500 | break; |
---|
[71f4e4f] | 501 | |
---|
[51587aa] | 502 | case OT_PREFIX: |
---|
| 503 | case OT_PREFIXASSIGN: |
---|
[de62360d] | 504 | case OT_LABELADDRESS: |
---|
[51587aa] | 505 | assert( untypedExpr->get_args().size() == 1 ); |
---|
[6c4ff37] | 506 | output << "("; |
---|
| 507 | output << opInfo.symbol; |
---|
[51587aa] | 508 | (*arg)->accept( *this ); |
---|
[6c4ff37] | 509 | output << ")"; |
---|
[51587aa] | 510 | break; |
---|
[71f4e4f] | 511 | |
---|
[51587aa] | 512 | case OT_POSTFIX: |
---|
| 513 | case OT_POSTFIXASSIGN: |
---|
| 514 | assert( untypedExpr->get_args().size() == 1 ); |
---|
| 515 | (*arg)->accept( *this ); |
---|
[6c4ff37] | 516 | output << opInfo.symbol; |
---|
[51587aa] | 517 | break; |
---|
[71f4e4f] | 518 | |
---|
[51587aa] | 519 | case OT_INFIX: |
---|
| 520 | case OT_INFIXASSIGN: |
---|
| 521 | assert( untypedExpr->get_args().size() == 2 ); |
---|
[6c4ff37] | 522 | output << "("; |
---|
[51587aa] | 523 | (*arg++)->accept( *this ); |
---|
[6c4ff37] | 524 | output << opInfo.symbol; |
---|
[51587aa] | 525 | (*arg)->accept( *this ); |
---|
[6c4ff37] | 526 | output << ")"; |
---|
[51587aa] | 527 | break; |
---|
[71f4e4f] | 528 | |
---|
[51587aa] | 529 | case OT_CONSTANT: |
---|
| 530 | // there are no intrinsic definitions of 0 or 1 as functions |
---|
| 531 | assert( false ); |
---|
[3778cb2] | 532 | } // switch |
---|
[51587aa] | 533 | } else { |
---|
[8688ce1] | 534 | if ( nameExpr->get_name() == "..." ) { // case V1 ... V2 or case V1~V2 |
---|
[ac911f4] | 535 | assert( untypedExpr->get_args().size() == 2 ); |
---|
| 536 | (*untypedExpr->get_args().begin())->accept( *this ); |
---|
| 537 | output << " ... "; |
---|
| 538 | (*--untypedExpr->get_args().end())->accept( *this ); |
---|
[057b34f] | 539 | } else { // builtin routines |
---|
| 540 | nameExpr->accept( *this ); |
---|
| 541 | output << "("; |
---|
| 542 | genCommaList( untypedExpr->get_args().begin(), untypedExpr->get_args().end() ); |
---|
| 543 | output << ")"; |
---|
[66d12f7] | 544 | } // if |
---|
[51587aa] | 545 | } // if |
---|
| 546 | } else { |
---|
| 547 | untypedExpr->get_function()->accept( *this ); |
---|
[6c4ff37] | 548 | output << "("; |
---|
[51587aa] | 549 | genCommaList( untypedExpr->get_args().begin(), untypedExpr->get_args().end() ); |
---|
[6c4ff37] | 550 | output << ")"; |
---|
[51587aa] | 551 | } // if |
---|
| 552 | } |
---|
[71f4e4f] | 553 | |
---|
[064e3ff] | 554 | void CodeGenerator::visit( RangeExpr * rangeExpr ) { |
---|
| 555 | rangeExpr->get_low()->accept( *this ); |
---|
| 556 | output << " ... "; |
---|
| 557 | rangeExpr->get_high()->accept( *this ); |
---|
| 558 | } |
---|
| 559 | |
---|
[8688ce1] | 560 | void CodeGenerator::visit( NameExpr * nameExpr ) { |
---|
[e04ef3a] | 561 | extension( nameExpr ); |
---|
[51587aa] | 562 | OperatorInfo opInfo; |
---|
| 563 | if ( operatorLookup( nameExpr->get_name(), opInfo ) ) { |
---|
| 564 | assert( opInfo.type == OT_CONSTANT ); |
---|
[6c4ff37] | 565 | output << opInfo.symbol; |
---|
[51587aa] | 566 | } else { |
---|
[6c4ff37] | 567 | output << nameExpr->get_name(); |
---|
[51587aa] | 568 | } // if |
---|
| 569 | } |
---|
[71f4e4f] | 570 | |
---|
[8688ce1] | 571 | void CodeGenerator::visit( AddressExpr * addressExpr ) { |
---|
[e04ef3a] | 572 | extension( addressExpr ); |
---|
[6c4ff37] | 573 | output << "(&"; |
---|
[51587aa] | 574 | // this hack makes sure that we don't convert "constant_zero" to "0" if we're taking its address |
---|
[8688ce1] | 575 | if ( VariableExpr * variableExpr = dynamic_cast< VariableExpr* >( addressExpr->get_arg() ) ) { |
---|
[6c4ff37] | 576 | output << mangleName( variableExpr->get_var() ); |
---|
[51587aa] | 577 | } else { |
---|
| 578 | addressExpr->get_arg()->accept( *this ); |
---|
| 579 | } // if |
---|
[6c4ff37] | 580 | output << ")"; |
---|
[51587aa] | 581 | } |
---|
| 582 | |
---|
[8688ce1] | 583 | void CodeGenerator::visit( CastExpr * castExpr ) { |
---|
[e04ef3a] | 584 | extension( castExpr ); |
---|
[803deb1] | 585 | output << "("; |
---|
[906e24d] | 586 | if ( castExpr->get_result()->isVoid() ) { |
---|
[803deb1] | 587 | output << "(void)" ; |
---|
[615a096] | 588 | } else if ( ! castExpr->get_result()->get_lvalue() ) { |
---|
[803deb1] | 589 | // at least one result type of cast, but not an lvalue |
---|
| 590 | output << "("; |
---|
[e39241b] | 591 | output << genType( castExpr->get_result(), "", pretty, genC ); |
---|
[71f4e4f] | 592 | output << ")"; |
---|
[803deb1] | 593 | } else { |
---|
[8e9cbb2] | 594 | // otherwise, the cast is to an lvalue type, so the cast should be dropped, since the result of a cast is |
---|
[803deb1] | 595 | // never an lvalue in C |
---|
[3778cb2] | 596 | } // if |
---|
[803deb1] | 597 | castExpr->get_arg()->accept( *this ); |
---|
| 598 | output << ")"; |
---|
[51587aa] | 599 | } |
---|
[71f4e4f] | 600 | |
---|
[8688ce1] | 601 | void CodeGenerator::visit( UntypedMemberExpr * memberExpr ) { |
---|
[e39241b] | 602 | assertf( ! genC, "UntypedMemberExpr should not reach code generation." ); |
---|
| 603 | extension( memberExpr ); |
---|
| 604 | memberExpr->get_aggregate()->accept( *this ); |
---|
[5f642e38] | 605 | output << "."; |
---|
| 606 | memberExpr->get_member()->accept( *this ); |
---|
[51587aa] | 607 | } |
---|
[71f4e4f] | 608 | |
---|
[8688ce1] | 609 | void CodeGenerator::visit( MemberExpr * memberExpr ) { |
---|
[e04ef3a] | 610 | extension( memberExpr ); |
---|
[51587aa] | 611 | memberExpr->get_aggregate()->accept( *this ); |
---|
[6c4ff37] | 612 | output << "." << mangleName( memberExpr->get_member() ); |
---|
[51587aa] | 613 | } |
---|
[71f4e4f] | 614 | |
---|
[8688ce1] | 615 | void CodeGenerator::visit( VariableExpr * variableExpr ) { |
---|
[e04ef3a] | 616 | extension( variableExpr ); |
---|
[51587aa] | 617 | OperatorInfo opInfo; |
---|
| 618 | if ( variableExpr->get_var()->get_linkage() == LinkageSpec::Intrinsic && operatorLookup( variableExpr->get_var()->get_name(), opInfo ) && opInfo.type == OT_CONSTANT ) { |
---|
[6c4ff37] | 619 | output << opInfo.symbol; |
---|
[51587aa] | 620 | } else { |
---|
[6c4ff37] | 621 | output << mangleName( variableExpr->get_var() ); |
---|
[51587aa] | 622 | } // if |
---|
| 623 | } |
---|
[71f4e4f] | 624 | |
---|
[8688ce1] | 625 | void CodeGenerator::visit( ConstantExpr * constantExpr ) { |
---|
[51587aa] | 626 | assert( constantExpr->get_constant() ); |
---|
[e04ef3a] | 627 | extension( constantExpr ); |
---|
[51587aa] | 628 | constantExpr->get_constant()->accept( *this ); |
---|
| 629 | } |
---|
[71f4e4f] | 630 | |
---|
[8688ce1] | 631 | void CodeGenerator::visit( SizeofExpr * sizeofExpr ) { |
---|
[e04ef3a] | 632 | extension( sizeofExpr ); |
---|
[6c4ff37] | 633 | output << "sizeof("; |
---|
[51587aa] | 634 | if ( sizeofExpr->get_isType() ) { |
---|
[e39241b] | 635 | output << genType( sizeofExpr->get_type(), "", pretty, genC ); |
---|
[51587aa] | 636 | } else { |
---|
| 637 | sizeofExpr->get_expr()->accept( *this ); |
---|
| 638 | } // if |
---|
[6c4ff37] | 639 | output << ")"; |
---|
[51587aa] | 640 | } |
---|
[47534159] | 641 | |
---|
[8688ce1] | 642 | void CodeGenerator::visit( AlignofExpr * alignofExpr ) { |
---|
[47534159] | 643 | // use GCC extension to avoid bumping std to C11 |
---|
[8e9cbb2] | 644 | extension( alignofExpr ); |
---|
[47534159] | 645 | output << "__alignof__("; |
---|
[25a054f] | 646 | if ( alignofExpr->get_isType() ) { |
---|
[e39241b] | 647 | output << genType( alignofExpr->get_type(), "", pretty, genC ); |
---|
[47534159] | 648 | } else { |
---|
[25a054f] | 649 | alignofExpr->get_expr()->accept( *this ); |
---|
[47534159] | 650 | } // if |
---|
| 651 | output << ")"; |
---|
| 652 | } |
---|
[71f4e4f] | 653 | |
---|
[8688ce1] | 654 | void CodeGenerator::visit( UntypedOffsetofExpr * offsetofExpr ) { |
---|
[e39241b] | 655 | assertf( ! genC, "UntypedOffsetofExpr should not reach code generation." ); |
---|
| 656 | output << "offsetof("; |
---|
| 657 | output << genType( offsetofExpr->get_type(), "", pretty, genC ); |
---|
| 658 | output << ", " << offsetofExpr->get_member(); |
---|
| 659 | output << ")"; |
---|
[2a4b088] | 660 | } |
---|
| 661 | |
---|
[8688ce1] | 662 | void CodeGenerator::visit( OffsetofExpr * offsetofExpr ) { |
---|
[25a054f] | 663 | // use GCC builtin |
---|
| 664 | output << "__builtin_offsetof("; |
---|
[e39241b] | 665 | output << genType( offsetofExpr->get_type(), "", pretty, genC ); |
---|
[e551c69] | 666 | output << ", " << mangleName( offsetofExpr->get_member() ); |
---|
[25a054f] | 667 | output << ")"; |
---|
| 668 | } |
---|
[d63eeb0] | 669 | |
---|
[8688ce1] | 670 | void CodeGenerator::visit( OffsetPackExpr * offsetPackExpr ) { |
---|
[e39241b] | 671 | assertf( ! genC, "OffsetPackExpr should not reach code generation." ); |
---|
| 672 | output << "__CFA_offsetpack(" << genType( offsetPackExpr->get_type(), "", pretty, genC ) << ")"; |
---|
[afc1045] | 673 | } |
---|
[70a06f6] | 674 | |
---|
[8688ce1] | 675 | void CodeGenerator::visit( LogicalExpr * logicalExpr ) { |
---|
[e04ef3a] | 676 | extension( logicalExpr ); |
---|
[6c4ff37] | 677 | output << "("; |
---|
[51587aa] | 678 | logicalExpr->get_arg1()->accept( *this ); |
---|
| 679 | if ( logicalExpr->get_isAnd() ) { |
---|
[6c4ff37] | 680 | output << " && "; |
---|
[51587aa] | 681 | } else { |
---|
[6c4ff37] | 682 | output << " || "; |
---|
[51587aa] | 683 | } // if |
---|
| 684 | logicalExpr->get_arg2()->accept( *this ); |
---|
[6c4ff37] | 685 | output << ")"; |
---|
[51587aa] | 686 | } |
---|
[71f4e4f] | 687 | |
---|
[8688ce1] | 688 | void CodeGenerator::visit( ConditionalExpr * conditionalExpr ) { |
---|
[e04ef3a] | 689 | extension( conditionalExpr ); |
---|
[6c4ff37] | 690 | output << "("; |
---|
[51587aa] | 691 | conditionalExpr->get_arg1()->accept( *this ); |
---|
[6c4ff37] | 692 | output << " ? "; |
---|
[51587aa] | 693 | conditionalExpr->get_arg2()->accept( *this ); |
---|
[6c4ff37] | 694 | output << " : "; |
---|
[51587aa] | 695 | conditionalExpr->get_arg3()->accept( *this ); |
---|
[6c4ff37] | 696 | output << ")"; |
---|
[51587aa] | 697 | } |
---|
[71f4e4f] | 698 | |
---|
[8688ce1] | 699 | void CodeGenerator::visit( CommaExpr * commaExpr ) { |
---|
[e04ef3a] | 700 | extension( commaExpr ); |
---|
[6c4ff37] | 701 | output << "("; |
---|
[51587aa] | 702 | commaExpr->get_arg1()->accept( *this ); |
---|
[6c4ff37] | 703 | output << " , "; |
---|
[51587aa] | 704 | commaExpr->get_arg2()->accept( *this ); |
---|
[6c4ff37] | 705 | output << ")"; |
---|
[51587aa] | 706 | } |
---|
[71f4e4f] | 707 | |
---|
[e39241b] | 708 | void CodeGenerator::visit( UntypedTupleExpr * tupleExpr ) { |
---|
| 709 | assertf( ! genC, "UntypedTupleExpr should not reach code generation." ); |
---|
| 710 | output << "["; |
---|
| 711 | genCommaList( tupleExpr->get_exprs().begin(), tupleExpr->get_exprs().end() ); |
---|
| 712 | output << "]"; |
---|
| 713 | } |
---|
[907eccb] | 714 | |
---|
[e39241b] | 715 | void CodeGenerator::visit( TupleExpr * tupleExpr ) { |
---|
| 716 | assertf( ! genC, "TupleExpr should not reach code generation." ); |
---|
| 717 | output << "["; |
---|
| 718 | genCommaList( tupleExpr->get_exprs().begin(), tupleExpr->get_exprs().end() ); |
---|
| 719 | output << "]"; |
---|
| 720 | } |
---|
[71f4e4f] | 721 | |
---|
[e39241b] | 722 | void CodeGenerator::visit( TypeExpr * typeExpr ) { |
---|
| 723 | assertf( ! genC, "TypeExpr should not reach code generation." ); |
---|
| 724 | output<< genType( typeExpr->get_type(), "", pretty, genC ); |
---|
| 725 | } |
---|
[2b6c1e0] | 726 | |
---|
[8688ce1] | 727 | void CodeGenerator::visit( AsmExpr * asmExpr ) { |
---|
[7f5566b] | 728 | if ( asmExpr->get_inout() ) { |
---|
| 729 | output << "[ "; |
---|
| 730 | asmExpr->get_inout()->accept( *this ); |
---|
| 731 | output << " ] "; |
---|
| 732 | } // if |
---|
| 733 | asmExpr->get_constraint()->accept( *this ); |
---|
| 734 | output << " ( "; |
---|
| 735 | asmExpr->get_operand()->accept( *this ); |
---|
| 736 | output << " )"; |
---|
| 737 | } |
---|
| 738 | |
---|
[3c13c03] | 739 | void CodeGenerator::visit( CompoundLiteralExpr *compLitExpr ) { |
---|
[fbcde64] | 740 | assert( compLitExpr->get_result() && dynamic_cast< ListInit * > ( compLitExpr->get_initializer() ) ); |
---|
[e39241b] | 741 | output << "(" << genType( compLitExpr->get_result(), "", pretty, genC ) << ")"; |
---|
[3c13c03] | 742 | compLitExpr->get_initializer()->accept( *this ); |
---|
| 743 | } |
---|
| 744 | |
---|
[6eb8948] | 745 | void CodeGenerator::visit( StmtExpr * stmtExpr ) { |
---|
[3c13c03] | 746 | std::list< Statement * > & stmts = stmtExpr->get_statements()->get_kids(); |
---|
[4810867] | 747 | output << lineDirective( stmtExpr) << "({" << std::endl; |
---|
[3c13c03] | 748 | cur_indent += CodeGenerator::tabsize; |
---|
| 749 | unsigned int numStmts = stmts.size(); |
---|
| 750 | unsigned int i = 0; |
---|
| 751 | for ( Statement * stmt : stmts ) { |
---|
[4810867] | 752 | output << lineDirective( stmt ) << indent; |
---|
| 753 | output << printLabels( stmt->get_labels() ); |
---|
[3c13c03] | 754 | if ( i+1 == numStmts ) { |
---|
| 755 | // last statement in a statement expression needs to be handled specially - |
---|
| 756 | // cannot cast to void, otherwise the expression statement has no value |
---|
| 757 | if ( ExprStmt * exprStmt = dynamic_cast< ExprStmt * >( stmt ) ) { |
---|
| 758 | exprStmt->get_expr()->accept( *this ); |
---|
| 759 | output << ";" << endl; |
---|
| 760 | ++i; |
---|
| 761 | break; |
---|
| 762 | } |
---|
| 763 | } |
---|
| 764 | stmt->accept( *this ); |
---|
| 765 | output << endl; |
---|
| 766 | if ( wantSpacing( stmt ) ) { |
---|
| 767 | output << endl; |
---|
| 768 | } // if |
---|
| 769 | ++i; |
---|
| 770 | } |
---|
| 771 | cur_indent -= CodeGenerator::tabsize; |
---|
| 772 | output << indent << "})"; |
---|
[6eb8948] | 773 | } |
---|
| 774 | |
---|
[4810867] | 775 | // *** Statements |
---|
[8688ce1] | 776 | void CodeGenerator::visit( CompoundStmt * compoundStmt ) { |
---|
[51587aa] | 777 | std::list<Statement*> ks = compoundStmt->get_kids(); |
---|
[2b6c1e0] | 778 | output << "{" << endl; |
---|
[51587aa] | 779 | |
---|
[2b6c1e0] | 780 | cur_indent += CodeGenerator::tabsize; |
---|
[51587aa] | 781 | |
---|
[7f5566b] | 782 | for ( std::list<Statement *>::iterator i = ks.begin(); i != ks.end(); i++ ) { |
---|
[cda48b6] | 783 | output << indent << printLabels( (*i)->get_labels() ); |
---|
[7f5566b] | 784 | (*i)->accept( *this ); |
---|
[2b6c1e0] | 785 | |
---|
[6c4ff37] | 786 | output << endl; |
---|
[2b6c1e0] | 787 | if ( wantSpacing( *i ) ) { |
---|
| 788 | output << endl; |
---|
[3778cb2] | 789 | } // if |
---|
[8688ce1] | 790 | } // for |
---|
[71f4e4f] | 791 | cur_indent -= CodeGenerator::tabsize; |
---|
[51587aa] | 792 | |
---|
[cda48b6] | 793 | output << indent << "}"; |
---|
[51587aa] | 794 | } |
---|
| 795 | |
---|
[8688ce1] | 796 | void CodeGenerator::visit( ExprStmt * exprStmt ) { |
---|
[6c4ff37] | 797 | assert( exprStmt ); |
---|
[262f085f] | 798 | Expression * expr = exprStmt->get_expr(); |
---|
| 799 | if ( genC ) { |
---|
| 800 | // cast the top-level expression to void to reduce gcc warnings. |
---|
| 801 | expr = new CastExpr( expr ); |
---|
| 802 | } |
---|
[321a2481] | 803 | expr->accept( *this ); |
---|
| 804 | output << ";"; |
---|
[51587aa] | 805 | } |
---|
| 806 | |
---|
[8688ce1] | 807 | void CodeGenerator::visit( AsmStmt * asmStmt ) { |
---|
[7f5566b] | 808 | output << "asm "; |
---|
| 809 | if ( asmStmt->get_voltile() ) output << "volatile "; |
---|
| 810 | if ( ! asmStmt->get_gotolabels().empty() ) output << "goto "; |
---|
| 811 | output << "( "; |
---|
| 812 | if ( asmStmt->get_instruction() ) asmStmt->get_instruction()->accept( *this ); |
---|
| 813 | output << " : "; |
---|
| 814 | genCommaList( asmStmt->get_output().begin(), asmStmt->get_output().end() ); |
---|
| 815 | output << " : "; |
---|
| 816 | genCommaList( asmStmt->get_input().begin(), asmStmt->get_input().end() ); |
---|
| 817 | output << " : "; |
---|
| 818 | genCommaList( asmStmt->get_clobber().begin(), asmStmt->get_clobber().end() ); |
---|
| 819 | if ( ! asmStmt->get_gotolabels().empty() ) { |
---|
| 820 | output << " : "; |
---|
| 821 | for ( std::list<Label>::iterator begin = asmStmt->get_gotolabels().begin();; ) { |
---|
| 822 | output << *begin++; |
---|
| 823 | if ( begin == asmStmt->get_gotolabels().end() ) break; |
---|
| 824 | output << ", "; |
---|
| 825 | } // for |
---|
| 826 | } // if |
---|
| 827 | output << " );" ; |
---|
| 828 | } |
---|
| 829 | |
---|
[e994912] | 830 | void CodeGenerator::visit( AsmDecl * asmDecl ) { |
---|
| 831 | output << "asm "; |
---|
| 832 | AsmStmt * asmStmt = asmDecl->get_stmt(); |
---|
| 833 | output << "( "; |
---|
| 834 | if ( asmStmt->get_instruction() ) asmStmt->get_instruction()->accept( *this ); |
---|
| 835 | output << " )" ; |
---|
| 836 | } |
---|
| 837 | |
---|
[8688ce1] | 838 | void CodeGenerator::visit( IfStmt * ifStmt ) { |
---|
[4810867] | 839 | output << lineDirective( ifStmt ); |
---|
[7f5566b] | 840 | output << "if ( "; |
---|
| 841 | ifStmt->get_condition()->accept( *this ); |
---|
| 842 | output << " ) "; |
---|
[51587aa] | 843 | |
---|
[7f5566b] | 844 | ifStmt->get_thenPart()->accept( *this ); |
---|
[51587aa] | 845 | |
---|
| 846 | if ( ifStmt->get_elsePart() != 0) { |
---|
[2b6c1e0] | 847 | output << " else "; |
---|
[7f5566b] | 848 | ifStmt->get_elsePart()->accept( *this ); |
---|
[51587aa] | 849 | } // if |
---|
| 850 | } |
---|
| 851 | |
---|
[8688ce1] | 852 | void CodeGenerator::visit( SwitchStmt * switchStmt ) { |
---|
[4810867] | 853 | output << lineDirective( switchStmt ); |
---|
[7f5566b] | 854 | output << "switch ( " ; |
---|
| 855 | switchStmt->get_condition()->accept( *this ); |
---|
| 856 | output << " ) "; |
---|
[71f4e4f] | 857 | |
---|
[2b6c1e0] | 858 | output << "{" << std::endl; |
---|
[6c4ff37] | 859 | cur_indent += CodeGenerator::tabsize; |
---|
[8688ce1] | 860 | acceptAll( switchStmt->get_statements(), *this ); |
---|
[6c4ff37] | 861 | cur_indent -= CodeGenerator::tabsize; |
---|
[cda48b6] | 862 | output << indent << "}"; |
---|
[51587aa] | 863 | } |
---|
| 864 | |
---|
[8688ce1] | 865 | void CodeGenerator::visit( CaseStmt * caseStmt ) { |
---|
[4810867] | 866 | output << lineDirective( caseStmt ); |
---|
[cda48b6] | 867 | output << indent; |
---|
[eb3261f] | 868 | if ( caseStmt->isDefault()) { |
---|
[2b6c1e0] | 869 | output << "default"; |
---|
[eb3261f] | 870 | } else { |
---|
[2b6c1e0] | 871 | output << "case "; |
---|
[7f5566b] | 872 | caseStmt->get_condition()->accept( *this ); |
---|
[17cd4eb] | 873 | } // if |
---|
[6c4ff37] | 874 | output << ":\n"; |
---|
[71f4e4f] | 875 | |
---|
[51587aa] | 876 | std::list<Statement *> sts = caseStmt->get_statements(); |
---|
| 877 | |
---|
[6c4ff37] | 878 | cur_indent += CodeGenerator::tabsize; |
---|
[51587aa] | 879 | for ( std::list<Statement *>::iterator i = sts.begin(); i != sts.end(); i++) { |
---|
[cda48b6] | 880 | output << indent << printLabels( (*i)->get_labels() ) ; |
---|
[7f5566b] | 881 | (*i)->accept( *this ); |
---|
[6c4ff37] | 882 | output << endl; |
---|
[3778cb2] | 883 | } // for |
---|
[6c4ff37] | 884 | cur_indent -= CodeGenerator::tabsize; |
---|
[51587aa] | 885 | } |
---|
| 886 | |
---|
[8688ce1] | 887 | void CodeGenerator::visit( BranchStmt * branchStmt ) { |
---|
[51587aa] | 888 | switch ( branchStmt->get_type()) { |
---|
| 889 | case BranchStmt::Goto: |
---|
| 890 | if ( ! branchStmt->get_target().empty() ) |
---|
[6c4ff37] | 891 | output << "goto " << branchStmt->get_target(); |
---|
[71f4e4f] | 892 | else { |
---|
[51587aa] | 893 | if ( branchStmt->get_computedTarget() != 0 ) { |
---|
[6c4ff37] | 894 | output << "goto *"; |
---|
[51587aa] | 895 | branchStmt->get_computedTarget()->accept( *this ); |
---|
| 896 | } // if |
---|
| 897 | } // if |
---|
| 898 | break; |
---|
| 899 | case BranchStmt::Break: |
---|
[6c4ff37] | 900 | output << "break"; |
---|
[51587aa] | 901 | break; |
---|
| 902 | case BranchStmt::Continue: |
---|
[6c4ff37] | 903 | output << "continue"; |
---|
[51587aa] | 904 | break; |
---|
[3778cb2] | 905 | } // switch |
---|
[2b6c1e0] | 906 | output << ";"; |
---|
[51587aa] | 907 | } |
---|
| 908 | |
---|
[8688ce1] | 909 | void CodeGenerator::visit( ReturnStmt * returnStmt ) { |
---|
[6c4ff37] | 910 | output << "return "; |
---|
[4b2589a] | 911 | maybeAccept( returnStmt->get_expr(), *this ); |
---|
[6c4ff37] | 912 | output << ";"; |
---|
[51587aa] | 913 | } |
---|
| 914 | |
---|
[8688ce1] | 915 | void CodeGenerator::visit( WhileStmt * whileStmt ) { |
---|
[321a2481] | 916 | if ( whileStmt->get_isDoWhile() ) { |
---|
[6c4ff37] | 917 | output << "do" ; |
---|
[321a2481] | 918 | } else { |
---|
[6c4ff37] | 919 | output << "while (" ; |
---|
[7f5566b] | 920 | whileStmt->get_condition()->accept( *this ); |
---|
[6c4ff37] | 921 | output << ")"; |
---|
[51587aa] | 922 | } // if |
---|
[2b6c1e0] | 923 | output << " "; |
---|
[51587aa] | 924 | |
---|
[2b6c1e0] | 925 | output << CodeGenerator::printLabels( whileStmt->get_body()->get_labels() ); |
---|
[51587aa] | 926 | whileStmt->get_body()->accept( *this ); |
---|
| 927 | |
---|
[cda48b6] | 928 | output << indent; |
---|
[51587aa] | 929 | |
---|
| 930 | if ( whileStmt->get_isDoWhile() ) { |
---|
[6c4ff37] | 931 | output << " while (" ; |
---|
[7f5566b] | 932 | whileStmt->get_condition()->accept( *this ); |
---|
[6c4ff37] | 933 | output << ");"; |
---|
[51587aa] | 934 | } // if |
---|
| 935 | } |
---|
| 936 | |
---|
[8688ce1] | 937 | void CodeGenerator::visit( ForStmt * forStmt ) { |
---|
[8e9cbb2] | 938 | // initialization is always hoisted, so don't bother doing anything with that |
---|
[145f1fc] | 939 | output << "for (;"; |
---|
[51587aa] | 940 | |
---|
[321a2481] | 941 | if ( forStmt->get_condition() != 0 ) { |
---|
[51587aa] | 942 | forStmt->get_condition()->accept( *this ); |
---|
[3778cb2] | 943 | } // if |
---|
[6c4ff37] | 944 | output << ";"; |
---|
[51587aa] | 945 | |
---|
[321a2481] | 946 | if ( forStmt->get_increment() != 0 ) { |
---|
| 947 | // cast the top-level expression to void to reduce gcc warnings. |
---|
| 948 | Expression * expr = new CastExpr( forStmt->get_increment() ); |
---|
| 949 | expr->accept( *this ); |
---|
[3778cb2] | 950 | } // if |
---|
[2b6c1e0] | 951 | output << ") "; |
---|
[51587aa] | 952 | |
---|
| 953 | if ( forStmt->get_body() != 0 ) { |
---|
[2b6c1e0] | 954 | output << CodeGenerator::printLabels( forStmt->get_body()->get_labels() ); |
---|
[51587aa] | 955 | forStmt->get_body()->accept( *this ); |
---|
| 956 | } // if |
---|
| 957 | } |
---|
| 958 | |
---|
[8688ce1] | 959 | void CodeGenerator::visit( NullStmt * nullStmt ) { |
---|
[cda48b6] | 960 | //output << indent << CodeGenerator::printLabels( nullStmt->get_labels() ); |
---|
[6c4ff37] | 961 | output << "/* null statement */ ;"; |
---|
[51587aa] | 962 | } |
---|
| 963 | |
---|
[8688ce1] | 964 | void CodeGenerator::visit( DeclStmt * declStmt ) { |
---|
[51587aa] | 965 | declStmt->get_decl()->accept( *this ); |
---|
[71f4e4f] | 966 | |
---|
[51587aa] | 967 | if ( doSemicolon( declStmt->get_decl() ) ) { |
---|
[6c4ff37] | 968 | output << ";"; |
---|
[51587aa] | 969 | } // if |
---|
| 970 | } |
---|
| 971 | |
---|
[dd020c0] | 972 | void CodeGenerator::handleStorageClass( DeclarationWithType * decl ) { |
---|
[fb04321] | 973 | if ( decl->get_storageClasses().any() ) { |
---|
[6e8bd43] | 974 | decl->get_storageClasses().print( output ); |
---|
[a7c90d4] | 975 | } // if |
---|
[dd020c0] | 976 | } // CodeGenerator::handleStorageClass |
---|
[9facf3b] | 977 | |
---|
| 978 | std::string genName( DeclarationWithType * decl ) { |
---|
| 979 | CodeGen::OperatorInfo opInfo; |
---|
| 980 | if ( operatorLookup( decl->get_name(), opInfo ) ) { |
---|
| 981 | return opInfo.outputName; |
---|
| 982 | } else { |
---|
| 983 | return decl->get_name(); |
---|
| 984 | } // if |
---|
| 985 | } |
---|
[51b7345] | 986 | } // namespace CodeGen |
---|
[51587aa] | 987 | |
---|
| 988 | // Local Variables: // |
---|
| 989 | // tab-width: 4 // |
---|
| 990 | // mode: c++ // |
---|
| 991 | // compile-command: "make install" // |
---|
| 992 | // End: // |
---|