[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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[a5f0529] | 12 | // Last Modified On : Tus Jul 25 15:29:00 2017 |
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| 13 | // Update Count : 486 |
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[51587aa] | 14 | // |
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[3268a58] | 15 | #include "CodeGenerator.h" |
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[51587aa] | 16 | |
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[bf2438c] | 17 | #include <cassert> // for assert, assertf |
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| 18 | #include <list> // for _List_iterator, list, list<>::it... |
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[51b7345] | 19 | |
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[bf2438c] | 20 | #include "Common/SemanticError.h" // for SemanticError |
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| 21 | #include "Common/UniqueName.h" // for UniqueName |
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| 22 | #include "Common/utility.h" // for CodeLocation, toString |
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| 23 | #include "GenType.h" // for genType |
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| 24 | #include "InitTweak/InitTweak.h" // for getPointerBase |
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| 25 | #include "OperatorTable.h" // for OperatorInfo, operatorLookup |
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| 26 | #include "Parser/LinkageSpec.h" // for Spec, Intrinsic |
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| 27 | #include "SynTree/Attribute.h" // for Attribute |
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| 28 | #include "SynTree/BaseSyntaxNode.h" // for BaseSyntaxNode |
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| 29 | #include "SynTree/Constant.h" // for Constant |
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| 30 | #include "SynTree/Declaration.h" // for DeclarationWithType, TypeDecl |
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| 31 | #include "SynTree/Expression.h" // for Expression, UntypedExpr, Applica... |
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| 32 | #include "SynTree/Initializer.h" // for Initializer, ListInit, Designation |
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| 33 | #include "SynTree/Label.h" // for Label, operator<< |
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| 34 | #include "SynTree/Statement.h" // for Statement, AsmStmt, BranchStmt |
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| 35 | #include "SynTree/Type.h" // for Type, Type::StorageClasses, Func... |
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[10a7775] | 36 | |
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[51b7345] | 37 | using namespace std; |
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| 38 | |
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| 39 | namespace CodeGen { |
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[6c4ff37] | 40 | int CodeGenerator::tabsize = 4; |
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[51587aa] | 41 | |
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[145f1fc] | 42 | // the kinds of statements that would ideally be followed by whitespace |
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[2b6c1e0] | 43 | bool wantSpacing( Statement * stmt) { |
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| 44 | return dynamic_cast< IfStmt * >( stmt ) || dynamic_cast< CompoundStmt * >( stmt ) || |
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[08061589] | 45 | dynamic_cast< WhileStmt * >( stmt ) || dynamic_cast< ForStmt * >( stmt ) || dynamic_cast< SwitchStmt *>( stmt ); |
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[2b6c1e0] | 46 | } |
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| 47 | |
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[8688ce1] | 48 | void CodeGenerator::extension( Expression * expr ) { |
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[8e9cbb2] | 49 | if ( expr->get_extension() ) { |
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| 50 | output << "__extension__ "; |
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| 51 | } // if |
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| 52 | } // extension |
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| 53 | |
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[8688ce1] | 54 | void CodeGenerator::extension( Declaration * decl ) { |
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[8e9cbb2] | 55 | if ( decl->get_extension() ) { |
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| 56 | output << "__extension__ "; |
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| 57 | } // if |
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| 58 | } // extension |
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| 59 | |
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[58dd019] | 60 | void CodeGenerator::asmName( DeclarationWithType * decl ) { |
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| 61 | if ( ConstantExpr * asmName = decl->get_asmName() ) { |
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| 62 | output << " asm ( " << asmName->get_constant()->get_value() << " )"; |
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| 63 | } // if |
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| 64 | } // extension |
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| 65 | |
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[888cbe4] | 66 | CodeGenerator::LabelPrinter & CodeGenerator::LabelPrinter::operator()( std::list< Label > & l ) { |
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| 67 | labels = &l; |
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| 68 | return *this; |
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| 69 | } |
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| 70 | |
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[8688ce1] | 71 | ostream & operator<<( ostream & output, CodeGenerator::LabelPrinter & printLabels ) { |
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[888cbe4] | 72 | std::list< Label > & labs = *printLabels.labels; |
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| 73 | // l.unique(); // assumes a sorted list. Why not use set? Does order matter? |
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| 74 | for ( Label & l : labs ) { |
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| 75 | output << l.get_name() + ": "; |
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| 76 | printLabels.cg.genAttributes( l.get_attributes() ); |
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[8688ce1] | 77 | } // for |
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[888cbe4] | 78 | return output; |
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| 79 | } |
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| 80 | |
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[c850687] | 81 | CodeGenerator::LineMarker::LineMarker( |
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| 82 | CodeLocation const & loc, bool toPrint) : |
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| 83 | loc(loc), toPrint(toPrint) |
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| 84 | {} |
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| 85 | |
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| 86 | CodeGenerator::LineMarker CodeGenerator::lineDirective( |
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| 87 | BaseSyntaxNode const * node) { |
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| 88 | return LineMarker(node->location, lineMarks); |
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| 89 | } |
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| 90 | |
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| 91 | std::ostream & operator<<(std::ostream & out, |
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| 92 | CodeGenerator::LineMarker const & marker) { |
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| 93 | if (marker.toPrint && marker.loc.isSet()) { |
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| 94 | return out << "\n# " << marker.loc.linenumber << " \"" |
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| 95 | << marker.loc.filename << "\"\n"; |
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| 96 | } else if (marker.toPrint) { |
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| 97 | return out << "\n/* Missing CodeLocation */\n"; |
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| 98 | } else { |
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| 99 | return out; |
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| 100 | } |
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| 101 | } |
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| 102 | |
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[f7cb0bc] | 103 | CodeGenerator::CodeGenerator( std::ostream & os, bool pretty, bool genC, bool lineMarks ) : indent( CodeGenerator::tabsize ), insideFunction( false ), output( os ), printLabels( *this ), pretty( pretty ), genC( genC ), lineMarks( lineMarks ) {} |
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[cda48b6] | 104 | |
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[486341f] | 105 | string CodeGenerator::mangleName( DeclarationWithType * decl ) { |
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[35b1bf4] | 106 | if ( pretty ) return decl->get_name(); |
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[51587aa] | 107 | if ( decl->get_mangleName() != "" ) { |
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[f326f99] | 108 | // need to incorporate scope level in order to differentiate names for destructors |
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| 109 | return decl->get_scopedMangleName(); |
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[51587aa] | 110 | } else { |
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| 111 | return decl->get_name(); |
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| 112 | } // if |
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| 113 | } |
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[94b4364] | 114 | |
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[44a81853] | 115 | void CodeGenerator::genAttributes( list< Attribute * > & attributes ) { |
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| 116 | if ( attributes.empty() ) return; |
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| 117 | output << "__attribute__ (("; |
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| 118 | for ( list< Attribute * >::iterator attr( attributes.begin() );; ) { |
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| 119 | output << (*attr)->get_name(); |
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| 120 | if ( ! (*attr)->get_parameters().empty() ) { |
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| 121 | output << "("; |
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| 122 | genCommaList( (*attr)->get_parameters().begin(), (*attr)->get_parameters().end() ); |
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| 123 | output << ")"; |
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| 124 | } // if |
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| 125 | if ( ++attr == attributes.end() ) break; |
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| 126 | output << ","; // separator |
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| 127 | } // for |
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| 128 | output << ")) "; |
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| 129 | } // CodeGenerator::genAttributes |
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[7baed7d] | 130 | |
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| 131 | |
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[4810867] | 132 | // *** Declarations |
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[8688ce1] | 133 | void CodeGenerator::visit( FunctionDecl * functionDecl ) { |
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[8e9cbb2] | 134 | extension( functionDecl ); |
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[7baed7d] | 135 | genAttributes( functionDecl->get_attributes() ); |
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| 136 | |
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[51587aa] | 137 | handleStorageClass( functionDecl ); |
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[6e8bd43] | 138 | functionDecl->get_funcSpec().print( output ); |
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[dd020c0] | 139 | |
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[e39241b] | 140 | output << genType( functionDecl->get_functionType(), mangleName( functionDecl ), pretty, genC ); |
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[51587aa] | 141 | |
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[58dd019] | 142 | asmName( functionDecl ); |
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| 143 | |
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[51587aa] | 144 | // acceptAll( functionDecl->get_oldDecls(), *this ); |
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| 145 | if ( functionDecl->get_statements() ) { |
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[7f5566b] | 146 | functionDecl->get_statements()->accept( *this ); |
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[51587aa] | 147 | } // if |
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| 148 | } |
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| 149 | |
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[8688ce1] | 150 | void CodeGenerator::visit( ObjectDecl * objectDecl ) { |
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[e39241b] | 151 | if (objectDecl->get_name().empty() && genC ) { |
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| 152 | // only generate an anonymous name when generating C code, otherwise it clutters the output too much |
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[d9c8a59] | 153 | static UniqueName name = { "__anonymous_object" }; |
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| 154 | objectDecl->set_name( name.newName() ); |
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| 155 | } |
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| 156 | |
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[8e9cbb2] | 157 | extension( objectDecl ); |
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[f9cebb5] | 158 | genAttributes( objectDecl->get_attributes() ); |
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| 159 | |
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[51587aa] | 160 | handleStorageClass( objectDecl ); |
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[e39241b] | 161 | output << genType( objectDecl->get_type(), mangleName( objectDecl ), pretty, genC ); |
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[71f4e4f] | 162 | |
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[58dd019] | 163 | asmName( objectDecl ); |
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| 164 | |
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[51587aa] | 165 | if ( objectDecl->get_init() ) { |
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[6c4ff37] | 166 | output << " = "; |
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[51587aa] | 167 | objectDecl->get_init()->accept( *this ); |
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| 168 | } // if |
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[3778cb2] | 169 | |
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[51587aa] | 170 | if ( objectDecl->get_bitfieldWidth() ) { |
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[6c4ff37] | 171 | output << ":"; |
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[51587aa] | 172 | objectDecl->get_bitfieldWidth()->accept( *this ); |
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| 173 | } // if |
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| 174 | } |
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| 175 | |
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[5f642e38] | 176 | void CodeGenerator::handleAggregate( AggregateDecl * aggDecl, const std::string & kind ) { |
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[c0aa336] | 177 | genAttributes( aggDecl->get_attributes() ); |
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[35b1bf4] | 178 | |
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[e39241b] | 179 | if( ! aggDecl->get_parameters().empty() && ! genC ) { |
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| 180 | // assertf( ! genC, "Aggregate type parameters should not reach code generation." ); |
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| 181 | output << "forall("; |
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| 182 | genCommaList( aggDecl->get_parameters().begin(), aggDecl->get_parameters().end() ); |
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| 183 | output << ")" << endl; |
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| 184 | } |
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| 185 | |
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[29cf9c8] | 186 | output << kind; |
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[51587aa] | 187 | if ( aggDecl->get_name() != "" ) |
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[6c4ff37] | 188 | output << aggDecl->get_name(); |
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[71f4e4f] | 189 | |
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[2c57025] | 190 | if ( aggDecl->has_body() ) { |
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| 191 | std::list< Declaration * > & memb = aggDecl->get_members(); |
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[94b4364] | 192 | output << " {" << endl; |
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[51587aa] | 193 | |
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[f7cb0bc] | 194 | ++indent; |
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[3778cb2] | 195 | for ( std::list< Declaration* >::iterator i = memb.begin(); i != memb.end(); i++ ) { |
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[4810867] | 196 | output << lineDirective( *i ) << indent; |
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[7f5566b] | 197 | (*i)->accept( *this ); |
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[6c4ff37] | 198 | output << ";" << endl; |
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[3778cb2] | 199 | } // for |
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[51587aa] | 200 | |
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[f7cb0bc] | 201 | --indent; |
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[51587aa] | 202 | |
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[cda48b6] | 203 | output << indent << "}"; |
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[17cd4eb] | 204 | } // if |
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[51587aa] | 205 | } |
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[17cd4eb] | 206 | |
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[8688ce1] | 207 | void CodeGenerator::visit( StructDecl * structDecl ) { |
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[8e9cbb2] | 208 | extension( structDecl ); |
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[5f642e38] | 209 | handleAggregate( structDecl, "struct " ); |
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[51587aa] | 210 | } |
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[17cd4eb] | 211 | |
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[8688ce1] | 212 | void CodeGenerator::visit( UnionDecl * unionDecl ) { |
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[8e9cbb2] | 213 | extension( unionDecl ); |
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[5f642e38] | 214 | handleAggregate( unionDecl, "union " ); |
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[51587aa] | 215 | } |
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[71f4e4f] | 216 | |
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[8688ce1] | 217 | void CodeGenerator::visit( EnumDecl * enumDecl ) { |
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[8e9cbb2] | 218 | extension( enumDecl ); |
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[4810867] | 219 | output << lineDirective ( enumDecl ); |
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[6c4ff37] | 220 | output << "enum "; |
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[c0aa336] | 221 | genAttributes( enumDecl->get_attributes() ); |
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[51587aa] | 222 | |
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[8e9cbb2] | 223 | if ( enumDecl->get_name() != "" ) |
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| 224 | output << enumDecl->get_name(); |
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[71f4e4f] | 225 | |
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[8e9cbb2] | 226 | std::list< Declaration* > &memb = enumDecl->get_members(); |
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[51587aa] | 227 | |
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| 228 | if ( ! memb.empty() ) { |
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[cda48b6] | 229 | output << " {" << endl; |
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[51587aa] | 230 | |
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[f7cb0bc] | 231 | ++indent; |
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[51587aa] | 232 | for ( std::list< Declaration* >::iterator i = memb.begin(); i != memb.end(); i++) { |
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[8688ce1] | 233 | ObjectDecl * obj = dynamic_cast< ObjectDecl* >( *i ); |
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[51587aa] | 234 | assert( obj ); |
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[4810867] | 235 | output << lineDirective( obj ) << indent << mangleName( obj ); |
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[51587aa] | 236 | if ( obj->get_init() ) { |
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[6c4ff37] | 237 | output << " = "; |
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[7f5566b] | 238 | obj->get_init()->accept( *this ); |
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[51587aa] | 239 | } // if |
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[6c4ff37] | 240 | output << "," << endl; |
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[51587aa] | 241 | } // for |
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| 242 | |
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[f7cb0bc] | 243 | --indent; |
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[51587aa] | 244 | |
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[cda48b6] | 245 | output << indent << "}"; |
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[51587aa] | 246 | } // if |
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| 247 | } |
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[71f4e4f] | 248 | |
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[7e003011] | 249 | void CodeGenerator::visit( __attribute__((unused)) TraitDecl * traitDecl ) {} |
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[71f4e4f] | 250 | |
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[8688ce1] | 251 | void CodeGenerator::visit( TypedefDecl * typeDecl ) { |
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[e39241b] | 252 | assertf( ! genC, "Typedefs are removed and substituted in earlier passes." ); |
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[4810867] | 253 | output << lineDirective( typeDecl ); |
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[e39241b] | 254 | output << "typedef "; |
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| 255 | output << genType( typeDecl->get_base(), typeDecl->get_name(), pretty, genC ) << endl; |
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[51587aa] | 256 | } |
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[71f4e4f] | 257 | |
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[8688ce1] | 258 | void CodeGenerator::visit( TypeDecl * typeDecl ) { |
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[e39241b] | 259 | if ( genC ) { |
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| 260 | // really, we should mutate this into something that isn't a TypeDecl but that requires large-scale changes, |
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| 261 | // still to be done |
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| 262 | extension( typeDecl ); |
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| 263 | output << "extern unsigned long " << typeDecl->get_name(); |
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| 264 | if ( typeDecl->get_base() ) { |
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| 265 | output << " = sizeof( " << genType( typeDecl->get_base(), "", pretty, genC ) << " )"; |
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| 266 | } // if |
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| 267 | } else { |
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[bdd0755] | 268 | output << typeDecl->genTypeString() << " " << typeDecl->get_name(); |
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| 269 | if ( typeDecl->get_kind() != TypeDecl::Any && typeDecl->get_sized() ) { |
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| 270 | output << " | sized(" << typeDecl->get_name() << ")"; |
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| 271 | } |
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[e39241b] | 272 | if ( ! typeDecl->get_assertions().empty() ) { |
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| 273 | output << " | { "; |
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| 274 | genCommaList( typeDecl->get_assertions().begin(), typeDecl->get_assertions().end() ); |
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| 275 | output << " }"; |
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| 276 | } |
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| 277 | } |
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[51587aa] | 278 | } |
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| 279 | |
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[e4d829b] | 280 | void CodeGenerator::visit( Designation * designation ) { |
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| 281 | std::list< Expression * > designators = designation->get_designators(); |
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[e45215c] | 282 | if ( designators.size() == 0 ) return; |
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[e4d829b] | 283 | for ( Expression * des : designators ) { |
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[62423350] | 284 | if ( dynamic_cast< NameExpr * >( des ) || dynamic_cast< VariableExpr * >( des ) ) { |
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| 285 | // if expression is a NameExpr or VariableExpr, then initializing aggregate member |
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| 286 | output << "."; |
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[e4d829b] | 287 | des->accept( *this ); |
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| 288 | } else { |
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[62423350] | 289 | // otherwise, it has to be a ConstantExpr or CastExpr, initializing array eleemnt |
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| 290 | output << "["; |
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[e4d829b] | 291 | des->accept( *this ); |
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[62423350] | 292 | output << "]"; |
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[3778cb2] | 293 | } // if |
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| 294 | } // for |
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[e45215c] | 295 | output << " = "; |
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| 296 | } |
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| 297 | |
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[8688ce1] | 298 | void CodeGenerator::visit( SingleInit * init ) { |
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[51587aa] | 299 | init->get_value()->accept( *this ); |
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| 300 | } |
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| 301 | |
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[8688ce1] | 302 | void CodeGenerator::visit( ListInit * init ) { |
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[e4d829b] | 303 | auto initBegin = init->begin(); |
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| 304 | auto initEnd = init->end(); |
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| 305 | auto desigBegin = init->get_designations().begin(); |
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| 306 | auto desigEnd = init->get_designations().end(); |
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| 307 | |
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[6c4ff37] | 308 | output << "{ "; |
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[e4d829b] | 309 | for ( ; initBegin != initEnd && desigBegin != desigEnd; ) { |
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| 310 | (*desigBegin)->accept( *this ); |
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| 311 | (*initBegin)->accept( *this ); |
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| 312 | ++initBegin, ++desigBegin; |
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| 313 | if ( initBegin != initEnd ) { |
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| 314 | output << ", "; |
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| 315 | } |
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| 316 | } |
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[6c4ff37] | 317 | output << " }"; |
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[e4d829b] | 318 | assertf( initBegin == initEnd && desigBegin == desigEnd, "Initializers and designators not the same length. %s", toString( init ).c_str() ); |
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[51587aa] | 319 | } |
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| 320 | |
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[7e003011] | 321 | void CodeGenerator::visit( __attribute__((unused)) ConstructorInit * init ){ |
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[e39241b] | 322 | assertf( ! genC, "ConstructorInit nodes should not reach code generation." ); |
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| 323 | // xxx - generate something reasonable for constructor/destructor pairs |
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| 324 | output << "<ctorinit>"; |
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[fc638d2] | 325 | } |
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| 326 | |
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[8688ce1] | 327 | void CodeGenerator::visit( Constant * constant ) { |
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[6c4ff37] | 328 | output << constant->get_value() ; |
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[51587aa] | 329 | } |
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| 330 | |
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[4810867] | 331 | // *** Expressions |
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[8688ce1] | 332 | void CodeGenerator::visit( ApplicationExpr * applicationExpr ) { |
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[e04ef3a] | 333 | extension( applicationExpr ); |
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[8688ce1] | 334 | if ( VariableExpr * varExpr = dynamic_cast< VariableExpr* >( applicationExpr->get_function() ) ) { |
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[51587aa] | 335 | OperatorInfo opInfo; |
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| 336 | if ( varExpr->get_var()->get_linkage() == LinkageSpec::Intrinsic && operatorLookup( varExpr->get_var()->get_name(), opInfo ) ) { |
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| 337 | std::list< Expression* >::iterator arg = applicationExpr->get_args().begin(); |
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| 338 | switch ( opInfo.type ) { |
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| 339 | case OT_PREFIXASSIGN: |
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| 340 | case OT_POSTFIXASSIGN: |
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| 341 | case OT_INFIXASSIGN: |
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[356189a] | 342 | case OT_CTOR: |
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[c2ce2350] | 343 | case OT_DTOR: |
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[51587aa] | 344 | { |
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| 345 | assert( arg != applicationExpr->get_args().end() ); |
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[8688ce1] | 346 | if ( AddressExpr * addrExpr = dynamic_cast< AddressExpr * >( *arg ) ) { |
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[356189a] | 347 | // remove & from first assignment/ctor argument |
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[51587aa] | 348 | *arg = addrExpr->get_arg(); |
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| 349 | } else { |
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[356189a] | 350 | // no address-of operator, so must be a pointer - add dereference |
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[066d77a] | 351 | // NOTE: if the assertion starts to trigger, check that the application expr isn't being shared. |
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| 352 | // Since its arguments are modified here, this assertion most commonly triggers when the application |
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| 353 | // is visited multiple times. |
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[8688ce1] | 354 | UntypedExpr * newExpr = new UntypedExpr( new NameExpr( "*?" ) ); |
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[51587aa] | 355 | newExpr->get_args().push_back( *arg ); |
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[906e24d] | 356 | Type * type = InitTweak::getPointerBase( (*arg)->get_result() ); |
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[066d77a] | 357 | assertf( type, "First argument to a derefence must be a pointer. Ensure that expressions are not being shared." ); |
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[906e24d] | 358 | newExpr->set_result( type->clone() ); |
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[51587aa] | 359 | *arg = newExpr; |
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| 360 | } // if |
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| 361 | break; |
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| 362 | } |
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[71f4e4f] | 363 | |
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[51587aa] | 364 | default: |
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| 365 | // do nothing |
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| 366 | ; |
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[3778cb2] | 367 | } // switch |
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[71f4e4f] | 368 | |
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[51587aa] | 369 | switch ( opInfo.type ) { |
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| 370 | case OT_INDEX: |
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| 371 | assert( applicationExpr->get_args().size() == 2 ); |
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| 372 | (*arg++)->accept( *this ); |
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[6c4ff37] | 373 | output << "["; |
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[51587aa] | 374 | (*arg)->accept( *this ); |
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[6c4ff37] | 375 | output << "]"; |
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[51587aa] | 376 | break; |
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[71f4e4f] | 377 | |
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[51587aa] | 378 | case OT_CALL: |
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[356189a] | 379 | // there are no intrinsic definitions of the function call operator |
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[51587aa] | 380 | assert( false ); |
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| 381 | break; |
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[71f4e4f] | 382 | |
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[f1e012b] | 383 | case OT_CTOR: |
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[c2ce2350] | 384 | case OT_DTOR: |
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[356189a] | 385 | if ( applicationExpr->get_args().size() == 1 ) { |
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[8e9cbb2] | 386 | // the expression fed into a single parameter constructor or destructor may contain side |
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| 387 | // effects, so must still output this expression |
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[64071c2] | 388 | output << "("; |
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[356189a] | 389 | (*arg++)->accept( *this ); |
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[64071c2] | 390 | output << ") /* " << opInfo.inputName << " */"; |
---|
[356189a] | 391 | } else if ( applicationExpr->get_args().size() == 2 ) { |
---|
[c2ce2350] | 392 | // intrinsic two parameter constructors are essentially bitwise assignment |
---|
[356189a] | 393 | output << "("; |
---|
| 394 | (*arg++)->accept( *this ); |
---|
| 395 | output << opInfo.symbol; |
---|
| 396 | (*arg)->accept( *this ); |
---|
[c2ce2350] | 397 | output << ") /* " << opInfo.inputName << " */"; |
---|
[356189a] | 398 | } else { |
---|
[c2ce2350] | 399 | // no constructors with 0 or more than 2 parameters |
---|
[356189a] | 400 | assert( false ); |
---|
[8688ce1] | 401 | } // if |
---|
[356189a] | 402 | break; |
---|
[f1e012b] | 403 | |
---|
[51587aa] | 404 | case OT_PREFIX: |
---|
| 405 | case OT_PREFIXASSIGN: |
---|
| 406 | assert( applicationExpr->get_args().size() == 1 ); |
---|
[6c4ff37] | 407 | output << "("; |
---|
| 408 | output << opInfo.symbol; |
---|
[51587aa] | 409 | (*arg)->accept( *this ); |
---|
[6c4ff37] | 410 | output << ")"; |
---|
[51587aa] | 411 | break; |
---|
[71f4e4f] | 412 | |
---|
[51587aa] | 413 | case OT_POSTFIX: |
---|
| 414 | case OT_POSTFIXASSIGN: |
---|
| 415 | assert( applicationExpr->get_args().size() == 1 ); |
---|
| 416 | (*arg)->accept( *this ); |
---|
[6c4ff37] | 417 | output << opInfo.symbol; |
---|
[51587aa] | 418 | break; |
---|
| 419 | |
---|
[f1e012b] | 420 | |
---|
[51587aa] | 421 | case OT_INFIX: |
---|
| 422 | case OT_INFIXASSIGN: |
---|
| 423 | assert( applicationExpr->get_args().size() == 2 ); |
---|
[6c4ff37] | 424 | output << "("; |
---|
[51587aa] | 425 | (*arg++)->accept( *this ); |
---|
[6c4ff37] | 426 | output << opInfo.symbol; |
---|
[51587aa] | 427 | (*arg)->accept( *this ); |
---|
[6c4ff37] | 428 | output << ")"; |
---|
[51587aa] | 429 | break; |
---|
[71f4e4f] | 430 | |
---|
[51587aa] | 431 | case OT_CONSTANT: |
---|
[721f17a] | 432 | case OT_LABELADDRESS: |
---|
| 433 | // there are no intrinsic definitions of 0/1 or label addresses as functions |
---|
[51587aa] | 434 | assert( false ); |
---|
[3778cb2] | 435 | } // switch |
---|
[17cd4eb] | 436 | } else { |
---|
[51587aa] | 437 | varExpr->accept( *this ); |
---|
[6c4ff37] | 438 | output << "("; |
---|
[51587aa] | 439 | genCommaList( applicationExpr->get_args().begin(), applicationExpr->get_args().end() ); |
---|
[6c4ff37] | 440 | output << ")"; |
---|
[17cd4eb] | 441 | } // if |
---|
[51587aa] | 442 | } else { |
---|
| 443 | applicationExpr->get_function()->accept( *this ); |
---|
[6c4ff37] | 444 | output << "("; |
---|
[51587aa] | 445 | genCommaList( applicationExpr->get_args().begin(), applicationExpr->get_args().end() ); |
---|
[6c4ff37] | 446 | output << ")"; |
---|
[51587aa] | 447 | } // if |
---|
| 448 | } |
---|
[71f4e4f] | 449 | |
---|
[8688ce1] | 450 | void CodeGenerator::visit( UntypedExpr * untypedExpr ) { |
---|
[e04ef3a] | 451 | extension( untypedExpr ); |
---|
[8688ce1] | 452 | if ( NameExpr * nameExpr = dynamic_cast< NameExpr* >( untypedExpr->get_function() ) ) { |
---|
[51587aa] | 453 | OperatorInfo opInfo; |
---|
| 454 | if ( operatorLookup( nameExpr->get_name(), opInfo ) ) { |
---|
| 455 | std::list< Expression* >::iterator arg = untypedExpr->get_args().begin(); |
---|
| 456 | switch ( opInfo.type ) { |
---|
| 457 | case OT_INDEX: |
---|
| 458 | assert( untypedExpr->get_args().size() == 2 ); |
---|
| 459 | (*arg++)->accept( *this ); |
---|
[6c4ff37] | 460 | output << "["; |
---|
[51587aa] | 461 | (*arg)->accept( *this ); |
---|
[6c4ff37] | 462 | output << "]"; |
---|
[51587aa] | 463 | break; |
---|
[71f4e4f] | 464 | |
---|
[51587aa] | 465 | case OT_CALL: |
---|
[f1e012b] | 466 | assert( false ); |
---|
| 467 | |
---|
[c2ce2350] | 468 | case OT_CTOR: |
---|
| 469 | case OT_DTOR: |
---|
| 470 | if ( untypedExpr->get_args().size() == 1 ) { |
---|
[8e9cbb2] | 471 | // the expression fed into a single parameter constructor or destructor may contain side |
---|
| 472 | // effects, so must still output this expression |
---|
[64071c2] | 473 | output << "("; |
---|
[c2ce2350] | 474 | (*arg++)->accept( *this ); |
---|
[64071c2] | 475 | output << ") /* " << opInfo.inputName << " */"; |
---|
[c2ce2350] | 476 | } else if ( untypedExpr->get_args().size() == 2 ) { |
---|
| 477 | // intrinsic two parameter constructors are essentially bitwise assignment |
---|
| 478 | output << "("; |
---|
| 479 | (*arg++)->accept( *this ); |
---|
| 480 | output << opInfo.symbol; |
---|
| 481 | (*arg)->accept( *this ); |
---|
| 482 | output << ") /* " << opInfo.inputName << " */"; |
---|
| 483 | } else { |
---|
| 484 | // no constructors with 0 or more than 2 parameters |
---|
| 485 | assert( false ); |
---|
[3778cb2] | 486 | } // if |
---|
[51587aa] | 487 | break; |
---|
[71f4e4f] | 488 | |
---|
[51587aa] | 489 | case OT_PREFIX: |
---|
| 490 | case OT_PREFIXASSIGN: |
---|
[de62360d] | 491 | case OT_LABELADDRESS: |
---|
[51587aa] | 492 | assert( untypedExpr->get_args().size() == 1 ); |
---|
[6c4ff37] | 493 | output << "("; |
---|
| 494 | output << opInfo.symbol; |
---|
[51587aa] | 495 | (*arg)->accept( *this ); |
---|
[6c4ff37] | 496 | output << ")"; |
---|
[51587aa] | 497 | break; |
---|
[71f4e4f] | 498 | |
---|
[51587aa] | 499 | case OT_POSTFIX: |
---|
| 500 | case OT_POSTFIXASSIGN: |
---|
| 501 | assert( untypedExpr->get_args().size() == 1 ); |
---|
| 502 | (*arg)->accept( *this ); |
---|
[6c4ff37] | 503 | output << opInfo.symbol; |
---|
[51587aa] | 504 | break; |
---|
[71f4e4f] | 505 | |
---|
[51587aa] | 506 | case OT_INFIX: |
---|
| 507 | case OT_INFIXASSIGN: |
---|
| 508 | assert( untypedExpr->get_args().size() == 2 ); |
---|
[6c4ff37] | 509 | output << "("; |
---|
[51587aa] | 510 | (*arg++)->accept( *this ); |
---|
[6c4ff37] | 511 | output << opInfo.symbol; |
---|
[51587aa] | 512 | (*arg)->accept( *this ); |
---|
[6c4ff37] | 513 | output << ")"; |
---|
[51587aa] | 514 | break; |
---|
[71f4e4f] | 515 | |
---|
[51587aa] | 516 | case OT_CONSTANT: |
---|
| 517 | // there are no intrinsic definitions of 0 or 1 as functions |
---|
| 518 | assert( false ); |
---|
[3778cb2] | 519 | } // switch |
---|
[51587aa] | 520 | } else { |
---|
[8688ce1] | 521 | if ( nameExpr->get_name() == "..." ) { // case V1 ... V2 or case V1~V2 |
---|
[ac911f4] | 522 | assert( untypedExpr->get_args().size() == 2 ); |
---|
| 523 | (*untypedExpr->get_args().begin())->accept( *this ); |
---|
| 524 | output << " ... "; |
---|
| 525 | (*--untypedExpr->get_args().end())->accept( *this ); |
---|
[057b34f] | 526 | } else { // builtin routines |
---|
| 527 | nameExpr->accept( *this ); |
---|
| 528 | output << "("; |
---|
| 529 | genCommaList( untypedExpr->get_args().begin(), untypedExpr->get_args().end() ); |
---|
| 530 | output << ")"; |
---|
[66d12f7] | 531 | } // if |
---|
[51587aa] | 532 | } // if |
---|
| 533 | } else { |
---|
| 534 | untypedExpr->get_function()->accept( *this ); |
---|
[6c4ff37] | 535 | output << "("; |
---|
[51587aa] | 536 | genCommaList( untypedExpr->get_args().begin(), untypedExpr->get_args().end() ); |
---|
[6c4ff37] | 537 | output << ")"; |
---|
[51587aa] | 538 | } // if |
---|
| 539 | } |
---|
[71f4e4f] | 540 | |
---|
[064e3ff] | 541 | void CodeGenerator::visit( RangeExpr * rangeExpr ) { |
---|
| 542 | rangeExpr->get_low()->accept( *this ); |
---|
| 543 | output << " ... "; |
---|
| 544 | rangeExpr->get_high()->accept( *this ); |
---|
| 545 | } |
---|
| 546 | |
---|
[8688ce1] | 547 | void CodeGenerator::visit( NameExpr * nameExpr ) { |
---|
[e04ef3a] | 548 | extension( nameExpr ); |
---|
[51587aa] | 549 | OperatorInfo opInfo; |
---|
| 550 | if ( operatorLookup( nameExpr->get_name(), opInfo ) ) { |
---|
| 551 | assert( opInfo.type == OT_CONSTANT ); |
---|
[6c4ff37] | 552 | output << opInfo.symbol; |
---|
[51587aa] | 553 | } else { |
---|
[6c4ff37] | 554 | output << nameExpr->get_name(); |
---|
[51587aa] | 555 | } // if |
---|
| 556 | } |
---|
[71f4e4f] | 557 | |
---|
[8688ce1] | 558 | void CodeGenerator::visit( AddressExpr * addressExpr ) { |
---|
[e04ef3a] | 559 | extension( addressExpr ); |
---|
[6c4ff37] | 560 | output << "(&"; |
---|
[51587aa] | 561 | // this hack makes sure that we don't convert "constant_zero" to "0" if we're taking its address |
---|
[8688ce1] | 562 | if ( VariableExpr * variableExpr = dynamic_cast< VariableExpr* >( addressExpr->get_arg() ) ) { |
---|
[6c4ff37] | 563 | output << mangleName( variableExpr->get_var() ); |
---|
[51587aa] | 564 | } else { |
---|
| 565 | addressExpr->get_arg()->accept( *this ); |
---|
| 566 | } // if |
---|
[6c4ff37] | 567 | output << ")"; |
---|
[51587aa] | 568 | } |
---|
| 569 | |
---|
[8688ce1] | 570 | void CodeGenerator::visit( CastExpr * castExpr ) { |
---|
[e04ef3a] | 571 | extension( castExpr ); |
---|
[803deb1] | 572 | output << "("; |
---|
[906e24d] | 573 | if ( castExpr->get_result()->isVoid() ) { |
---|
[803deb1] | 574 | output << "(void)" ; |
---|
[615a096] | 575 | } else if ( ! castExpr->get_result()->get_lvalue() ) { |
---|
[803deb1] | 576 | // at least one result type of cast, but not an lvalue |
---|
| 577 | output << "("; |
---|
[e39241b] | 578 | output << genType( castExpr->get_result(), "", pretty, genC ); |
---|
[71f4e4f] | 579 | output << ")"; |
---|
[803deb1] | 580 | } else { |
---|
[8e9cbb2] | 581 | // otherwise, the cast is to an lvalue type, so the cast should be dropped, since the result of a cast is |
---|
[803deb1] | 582 | // never an lvalue in C |
---|
[3778cb2] | 583 | } // if |
---|
[803deb1] | 584 | castExpr->get_arg()->accept( *this ); |
---|
| 585 | output << ")"; |
---|
[51587aa] | 586 | } |
---|
[71f4e4f] | 587 | |
---|
[a5f0529] | 588 | void CodeGenerator::visit( VirtualCastExpr * castExpr ) { |
---|
| 589 | assertf( ! genC, "VirtualCastExpr should not reach code generation." ); |
---|
| 590 | extension( castExpr ); |
---|
| 591 | output << "(virtual "; |
---|
| 592 | castExpr->get_arg()->accept( *this ); |
---|
| 593 | output << ")"; |
---|
| 594 | } |
---|
| 595 | |
---|
[8688ce1] | 596 | void CodeGenerator::visit( UntypedMemberExpr * memberExpr ) { |
---|
[e39241b] | 597 | assertf( ! genC, "UntypedMemberExpr should not reach code generation." ); |
---|
| 598 | extension( memberExpr ); |
---|
| 599 | memberExpr->get_aggregate()->accept( *this ); |
---|
[5f642e38] | 600 | output << "."; |
---|
| 601 | memberExpr->get_member()->accept( *this ); |
---|
[51587aa] | 602 | } |
---|
[71f4e4f] | 603 | |
---|
[8688ce1] | 604 | void CodeGenerator::visit( MemberExpr * memberExpr ) { |
---|
[e04ef3a] | 605 | extension( memberExpr ); |
---|
[51587aa] | 606 | memberExpr->get_aggregate()->accept( *this ); |
---|
[6c4ff37] | 607 | output << "." << mangleName( memberExpr->get_member() ); |
---|
[51587aa] | 608 | } |
---|
[71f4e4f] | 609 | |
---|
[8688ce1] | 610 | void CodeGenerator::visit( VariableExpr * variableExpr ) { |
---|
[e04ef3a] | 611 | extension( variableExpr ); |
---|
[51587aa] | 612 | OperatorInfo opInfo; |
---|
| 613 | if ( variableExpr->get_var()->get_linkage() == LinkageSpec::Intrinsic && operatorLookup( variableExpr->get_var()->get_name(), opInfo ) && opInfo.type == OT_CONSTANT ) { |
---|
[6c4ff37] | 614 | output << opInfo.symbol; |
---|
[51587aa] | 615 | } else { |
---|
[6c4ff37] | 616 | output << mangleName( variableExpr->get_var() ); |
---|
[51587aa] | 617 | } // if |
---|
| 618 | } |
---|
[71f4e4f] | 619 | |
---|
[8688ce1] | 620 | void CodeGenerator::visit( ConstantExpr * constantExpr ) { |
---|
[51587aa] | 621 | assert( constantExpr->get_constant() ); |
---|
[e04ef3a] | 622 | extension( constantExpr ); |
---|
[51587aa] | 623 | constantExpr->get_constant()->accept( *this ); |
---|
| 624 | } |
---|
[71f4e4f] | 625 | |
---|
[8688ce1] | 626 | void CodeGenerator::visit( SizeofExpr * sizeofExpr ) { |
---|
[e04ef3a] | 627 | extension( sizeofExpr ); |
---|
[6c4ff37] | 628 | output << "sizeof("; |
---|
[51587aa] | 629 | if ( sizeofExpr->get_isType() ) { |
---|
[e39241b] | 630 | output << genType( sizeofExpr->get_type(), "", pretty, genC ); |
---|
[51587aa] | 631 | } else { |
---|
| 632 | sizeofExpr->get_expr()->accept( *this ); |
---|
| 633 | } // if |
---|
[6c4ff37] | 634 | output << ")"; |
---|
[51587aa] | 635 | } |
---|
[47534159] | 636 | |
---|
[8688ce1] | 637 | void CodeGenerator::visit( AlignofExpr * alignofExpr ) { |
---|
[47534159] | 638 | // use GCC extension to avoid bumping std to C11 |
---|
[8e9cbb2] | 639 | extension( alignofExpr ); |
---|
[47534159] | 640 | output << "__alignof__("; |
---|
[25a054f] | 641 | if ( alignofExpr->get_isType() ) { |
---|
[e39241b] | 642 | output << genType( alignofExpr->get_type(), "", pretty, genC ); |
---|
[47534159] | 643 | } else { |
---|
[25a054f] | 644 | alignofExpr->get_expr()->accept( *this ); |
---|
[47534159] | 645 | } // if |
---|
| 646 | output << ")"; |
---|
| 647 | } |
---|
[71f4e4f] | 648 | |
---|
[8688ce1] | 649 | void CodeGenerator::visit( UntypedOffsetofExpr * offsetofExpr ) { |
---|
[e39241b] | 650 | assertf( ! genC, "UntypedOffsetofExpr should not reach code generation." ); |
---|
| 651 | output << "offsetof("; |
---|
| 652 | output << genType( offsetofExpr->get_type(), "", pretty, genC ); |
---|
| 653 | output << ", " << offsetofExpr->get_member(); |
---|
| 654 | output << ")"; |
---|
[2a4b088] | 655 | } |
---|
| 656 | |
---|
[8688ce1] | 657 | void CodeGenerator::visit( OffsetofExpr * offsetofExpr ) { |
---|
[25a054f] | 658 | // use GCC builtin |
---|
| 659 | output << "__builtin_offsetof("; |
---|
[e39241b] | 660 | output << genType( offsetofExpr->get_type(), "", pretty, genC ); |
---|
[e551c69] | 661 | output << ", " << mangleName( offsetofExpr->get_member() ); |
---|
[25a054f] | 662 | output << ")"; |
---|
| 663 | } |
---|
[d63eeb0] | 664 | |
---|
[8688ce1] | 665 | void CodeGenerator::visit( OffsetPackExpr * offsetPackExpr ) { |
---|
[e39241b] | 666 | assertf( ! genC, "OffsetPackExpr should not reach code generation." ); |
---|
| 667 | output << "__CFA_offsetpack(" << genType( offsetPackExpr->get_type(), "", pretty, genC ) << ")"; |
---|
[afc1045] | 668 | } |
---|
[70a06f6] | 669 | |
---|
[8688ce1] | 670 | void CodeGenerator::visit( LogicalExpr * logicalExpr ) { |
---|
[e04ef3a] | 671 | extension( logicalExpr ); |
---|
[6c4ff37] | 672 | output << "("; |
---|
[51587aa] | 673 | logicalExpr->get_arg1()->accept( *this ); |
---|
| 674 | if ( logicalExpr->get_isAnd() ) { |
---|
[6c4ff37] | 675 | output << " && "; |
---|
[51587aa] | 676 | } else { |
---|
[6c4ff37] | 677 | output << " || "; |
---|
[51587aa] | 678 | } // if |
---|
| 679 | logicalExpr->get_arg2()->accept( *this ); |
---|
[6c4ff37] | 680 | output << ")"; |
---|
[51587aa] | 681 | } |
---|
[71f4e4f] | 682 | |
---|
[8688ce1] | 683 | void CodeGenerator::visit( ConditionalExpr * conditionalExpr ) { |
---|
[e04ef3a] | 684 | extension( conditionalExpr ); |
---|
[6c4ff37] | 685 | output << "("; |
---|
[51587aa] | 686 | conditionalExpr->get_arg1()->accept( *this ); |
---|
[6c4ff37] | 687 | output << " ? "; |
---|
[51587aa] | 688 | conditionalExpr->get_arg2()->accept( *this ); |
---|
[6c4ff37] | 689 | output << " : "; |
---|
[51587aa] | 690 | conditionalExpr->get_arg3()->accept( *this ); |
---|
[6c4ff37] | 691 | output << ")"; |
---|
[51587aa] | 692 | } |
---|
[71f4e4f] | 693 | |
---|
[8688ce1] | 694 | void CodeGenerator::visit( CommaExpr * commaExpr ) { |
---|
[e04ef3a] | 695 | extension( commaExpr ); |
---|
[6c4ff37] | 696 | output << "("; |
---|
[51587aa] | 697 | commaExpr->get_arg1()->accept( *this ); |
---|
[6c4ff37] | 698 | output << " , "; |
---|
[51587aa] | 699 | commaExpr->get_arg2()->accept( *this ); |
---|
[6c4ff37] | 700 | output << ")"; |
---|
[51587aa] | 701 | } |
---|
[71f4e4f] | 702 | |
---|
[e39241b] | 703 | void CodeGenerator::visit( UntypedTupleExpr * tupleExpr ) { |
---|
| 704 | assertf( ! genC, "UntypedTupleExpr should not reach code generation." ); |
---|
[f975c65] | 705 | extension( tupleExpr ); |
---|
[e39241b] | 706 | output << "["; |
---|
| 707 | genCommaList( tupleExpr->get_exprs().begin(), tupleExpr->get_exprs().end() ); |
---|
| 708 | output << "]"; |
---|
| 709 | } |
---|
[907eccb] | 710 | |
---|
[e39241b] | 711 | void CodeGenerator::visit( TupleExpr * tupleExpr ) { |
---|
| 712 | assertf( ! genC, "TupleExpr should not reach code generation." ); |
---|
[f975c65] | 713 | extension( tupleExpr ); |
---|
[e39241b] | 714 | output << "["; |
---|
| 715 | genCommaList( tupleExpr->get_exprs().begin(), tupleExpr->get_exprs().end() ); |
---|
| 716 | output << "]"; |
---|
| 717 | } |
---|
[71f4e4f] | 718 | |
---|
[f975c65] | 719 | void CodeGenerator::visit( TupleIndexExpr * tupleExpr ) { |
---|
| 720 | assertf( ! genC, "TupleIndexExpr should not reach code generation." ); |
---|
| 721 | extension( tupleExpr ); |
---|
| 722 | tupleExpr->get_tuple()->accept( *this ); |
---|
| 723 | output << "." << tupleExpr->get_index(); |
---|
| 724 | } |
---|
| 725 | |
---|
[e39241b] | 726 | void CodeGenerator::visit( TypeExpr * typeExpr ) { |
---|
[e4d829b] | 727 | // if ( genC ) std::cerr << "typeexpr still exists: " << typeExpr << std::endl; |
---|
| 728 | // assertf( ! genC, "TypeExpr should not reach code generation." ); |
---|
| 729 | if ( ! genC ) { |
---|
| 730 | output<< genType( typeExpr->get_type(), "", pretty, genC ); |
---|
| 731 | } |
---|
[e39241b] | 732 | } |
---|
[2b6c1e0] | 733 | |
---|
[8688ce1] | 734 | void CodeGenerator::visit( AsmExpr * asmExpr ) { |
---|
[7f5566b] | 735 | if ( asmExpr->get_inout() ) { |
---|
| 736 | output << "[ "; |
---|
| 737 | asmExpr->get_inout()->accept( *this ); |
---|
| 738 | output << " ] "; |
---|
| 739 | } // if |
---|
| 740 | asmExpr->get_constraint()->accept( *this ); |
---|
| 741 | output << " ( "; |
---|
| 742 | asmExpr->get_operand()->accept( *this ); |
---|
| 743 | output << " )"; |
---|
| 744 | } |
---|
| 745 | |
---|
[3c13c03] | 746 | void CodeGenerator::visit( CompoundLiteralExpr *compLitExpr ) { |
---|
[fbcde64] | 747 | assert( compLitExpr->get_result() && dynamic_cast< ListInit * > ( compLitExpr->get_initializer() ) ); |
---|
[e39241b] | 748 | output << "(" << genType( compLitExpr->get_result(), "", pretty, genC ) << ")"; |
---|
[3c13c03] | 749 | compLitExpr->get_initializer()->accept( *this ); |
---|
| 750 | } |
---|
| 751 | |
---|
[6eb8948] | 752 | void CodeGenerator::visit( StmtExpr * stmtExpr ) { |
---|
[3c13c03] | 753 | std::list< Statement * > & stmts = stmtExpr->get_statements()->get_kids(); |
---|
[4810867] | 754 | output << lineDirective( stmtExpr) << "({" << std::endl; |
---|
[f7cb0bc] | 755 | ++indent; |
---|
[3c13c03] | 756 | unsigned int numStmts = stmts.size(); |
---|
| 757 | unsigned int i = 0; |
---|
| 758 | for ( Statement * stmt : stmts ) { |
---|
[4810867] | 759 | output << lineDirective( stmt ) << indent; |
---|
| 760 | output << printLabels( stmt->get_labels() ); |
---|
[3c13c03] | 761 | if ( i+1 == numStmts ) { |
---|
| 762 | // last statement in a statement expression needs to be handled specially - |
---|
| 763 | // cannot cast to void, otherwise the expression statement has no value |
---|
| 764 | if ( ExprStmt * exprStmt = dynamic_cast< ExprStmt * >( stmt ) ) { |
---|
| 765 | exprStmt->get_expr()->accept( *this ); |
---|
| 766 | output << ";" << endl; |
---|
| 767 | ++i; |
---|
| 768 | break; |
---|
| 769 | } |
---|
| 770 | } |
---|
| 771 | stmt->accept( *this ); |
---|
| 772 | output << endl; |
---|
| 773 | if ( wantSpacing( stmt ) ) { |
---|
| 774 | output << endl; |
---|
| 775 | } // if |
---|
| 776 | ++i; |
---|
| 777 | } |
---|
[f7cb0bc] | 778 | --indent; |
---|
[3c13c03] | 779 | output << indent << "})"; |
---|
[6eb8948] | 780 | } |
---|
| 781 | |
---|
[4810867] | 782 | // *** Statements |
---|
[8688ce1] | 783 | void CodeGenerator::visit( CompoundStmt * compoundStmt ) { |
---|
[51587aa] | 784 | std::list<Statement*> ks = compoundStmt->get_kids(); |
---|
[2b6c1e0] | 785 | output << "{" << endl; |
---|
[51587aa] | 786 | |
---|
[f7cb0bc] | 787 | ++indent; |
---|
[51587aa] | 788 | |
---|
[7f5566b] | 789 | for ( std::list<Statement *>::iterator i = ks.begin(); i != ks.end(); i++ ) { |
---|
[cda48b6] | 790 | output << indent << printLabels( (*i)->get_labels() ); |
---|
[7f5566b] | 791 | (*i)->accept( *this ); |
---|
[2b6c1e0] | 792 | |
---|
[6c4ff37] | 793 | output << endl; |
---|
[2b6c1e0] | 794 | if ( wantSpacing( *i ) ) { |
---|
| 795 | output << endl; |
---|
[3778cb2] | 796 | } // if |
---|
[8688ce1] | 797 | } // for |
---|
[f7cb0bc] | 798 | --indent; |
---|
[51587aa] | 799 | |
---|
[cda48b6] | 800 | output << indent << "}"; |
---|
[51587aa] | 801 | } |
---|
| 802 | |
---|
[8688ce1] | 803 | void CodeGenerator::visit( ExprStmt * exprStmt ) { |
---|
[6c4ff37] | 804 | assert( exprStmt ); |
---|
[262f085f] | 805 | Expression * expr = exprStmt->get_expr(); |
---|
| 806 | if ( genC ) { |
---|
| 807 | // cast the top-level expression to void to reduce gcc warnings. |
---|
| 808 | expr = new CastExpr( expr ); |
---|
| 809 | } |
---|
[321a2481] | 810 | expr->accept( *this ); |
---|
| 811 | output << ";"; |
---|
[51587aa] | 812 | } |
---|
| 813 | |
---|
[8688ce1] | 814 | void CodeGenerator::visit( AsmStmt * asmStmt ) { |
---|
[7f5566b] | 815 | output << "asm "; |
---|
| 816 | if ( asmStmt->get_voltile() ) output << "volatile "; |
---|
| 817 | if ( ! asmStmt->get_gotolabels().empty() ) output << "goto "; |
---|
| 818 | output << "( "; |
---|
| 819 | if ( asmStmt->get_instruction() ) asmStmt->get_instruction()->accept( *this ); |
---|
| 820 | output << " : "; |
---|
| 821 | genCommaList( asmStmt->get_output().begin(), asmStmt->get_output().end() ); |
---|
| 822 | output << " : "; |
---|
| 823 | genCommaList( asmStmt->get_input().begin(), asmStmt->get_input().end() ); |
---|
| 824 | output << " : "; |
---|
| 825 | genCommaList( asmStmt->get_clobber().begin(), asmStmt->get_clobber().end() ); |
---|
| 826 | if ( ! asmStmt->get_gotolabels().empty() ) { |
---|
| 827 | output << " : "; |
---|
| 828 | for ( std::list<Label>::iterator begin = asmStmt->get_gotolabels().begin();; ) { |
---|
| 829 | output << *begin++; |
---|
| 830 | if ( begin == asmStmt->get_gotolabels().end() ) break; |
---|
| 831 | output << ", "; |
---|
| 832 | } // for |
---|
| 833 | } // if |
---|
| 834 | output << " );" ; |
---|
| 835 | } |
---|
| 836 | |
---|
[e994912] | 837 | void CodeGenerator::visit( AsmDecl * asmDecl ) { |
---|
| 838 | output << "asm "; |
---|
| 839 | AsmStmt * asmStmt = asmDecl->get_stmt(); |
---|
| 840 | output << "( "; |
---|
| 841 | if ( asmStmt->get_instruction() ) asmStmt->get_instruction()->accept( *this ); |
---|
| 842 | output << " )" ; |
---|
| 843 | } |
---|
| 844 | |
---|
[8688ce1] | 845 | void CodeGenerator::visit( IfStmt * ifStmt ) { |
---|
[4810867] | 846 | output << lineDirective( ifStmt ); |
---|
[7f5566b] | 847 | output << "if ( "; |
---|
| 848 | ifStmt->get_condition()->accept( *this ); |
---|
| 849 | output << " ) "; |
---|
[51587aa] | 850 | |
---|
[7f5566b] | 851 | ifStmt->get_thenPart()->accept( *this ); |
---|
[51587aa] | 852 | |
---|
| 853 | if ( ifStmt->get_elsePart() != 0) { |
---|
[2b6c1e0] | 854 | output << " else "; |
---|
[7f5566b] | 855 | ifStmt->get_elsePart()->accept( *this ); |
---|
[51587aa] | 856 | } // if |
---|
| 857 | } |
---|
| 858 | |
---|
[8688ce1] | 859 | void CodeGenerator::visit( SwitchStmt * switchStmt ) { |
---|
[4810867] | 860 | output << lineDirective( switchStmt ); |
---|
[7f5566b] | 861 | output << "switch ( " ; |
---|
| 862 | switchStmt->get_condition()->accept( *this ); |
---|
| 863 | output << " ) "; |
---|
[71f4e4f] | 864 | |
---|
[2b6c1e0] | 865 | output << "{" << std::endl; |
---|
[f7cb0bc] | 866 | ++indent; |
---|
[8688ce1] | 867 | acceptAll( switchStmt->get_statements(), *this ); |
---|
[f7cb0bc] | 868 | --indent; |
---|
[cda48b6] | 869 | output << indent << "}"; |
---|
[51587aa] | 870 | } |
---|
| 871 | |
---|
[8688ce1] | 872 | void CodeGenerator::visit( CaseStmt * caseStmt ) { |
---|
[4810867] | 873 | output << lineDirective( caseStmt ); |
---|
[cda48b6] | 874 | output << indent; |
---|
[eb3261f] | 875 | if ( caseStmt->isDefault()) { |
---|
[2b6c1e0] | 876 | output << "default"; |
---|
[eb3261f] | 877 | } else { |
---|
[2b6c1e0] | 878 | output << "case "; |
---|
[7f5566b] | 879 | caseStmt->get_condition()->accept( *this ); |
---|
[17cd4eb] | 880 | } // if |
---|
[6c4ff37] | 881 | output << ":\n"; |
---|
[71f4e4f] | 882 | |
---|
[51587aa] | 883 | std::list<Statement *> sts = caseStmt->get_statements(); |
---|
| 884 | |
---|
[f7cb0bc] | 885 | ++indent; |
---|
[51587aa] | 886 | for ( std::list<Statement *>::iterator i = sts.begin(); i != sts.end(); i++) { |
---|
[cda48b6] | 887 | output << indent << printLabels( (*i)->get_labels() ) ; |
---|
[7f5566b] | 888 | (*i)->accept( *this ); |
---|
[6c4ff37] | 889 | output << endl; |
---|
[3778cb2] | 890 | } // for |
---|
[f7cb0bc] | 891 | --indent; |
---|
[51587aa] | 892 | } |
---|
| 893 | |
---|
[8688ce1] | 894 | void CodeGenerator::visit( BranchStmt * branchStmt ) { |
---|
[51587aa] | 895 | switch ( branchStmt->get_type()) { |
---|
| 896 | case BranchStmt::Goto: |
---|
| 897 | if ( ! branchStmt->get_target().empty() ) |
---|
[6c4ff37] | 898 | output << "goto " << branchStmt->get_target(); |
---|
[71f4e4f] | 899 | else { |
---|
[51587aa] | 900 | if ( branchStmt->get_computedTarget() != 0 ) { |
---|
[6c4ff37] | 901 | output << "goto *"; |
---|
[51587aa] | 902 | branchStmt->get_computedTarget()->accept( *this ); |
---|
| 903 | } // if |
---|
| 904 | } // if |
---|
| 905 | break; |
---|
| 906 | case BranchStmt::Break: |
---|
[6c4ff37] | 907 | output << "break"; |
---|
[51587aa] | 908 | break; |
---|
| 909 | case BranchStmt::Continue: |
---|
[6c4ff37] | 910 | output << "continue"; |
---|
[51587aa] | 911 | break; |
---|
[3778cb2] | 912 | } // switch |
---|
[2b6c1e0] | 913 | output << ";"; |
---|
[51587aa] | 914 | } |
---|
| 915 | |
---|
[8688ce1] | 916 | void CodeGenerator::visit( ReturnStmt * returnStmt ) { |
---|
[6c4ff37] | 917 | output << "return "; |
---|
[4b2589a] | 918 | maybeAccept( returnStmt->get_expr(), *this ); |
---|
[6c4ff37] | 919 | output << ";"; |
---|
[51587aa] | 920 | } |
---|
| 921 | |
---|
[daf1af8] | 922 | void CodeGenerator::visit( ThrowStmt * throwStmt ) { |
---|
| 923 | assertf( ! genC, "Throw statements should not reach code generation." ); |
---|
| 924 | |
---|
| 925 | output << ((throwStmt->get_kind() == ThrowStmt::Terminate) ? |
---|
| 926 | "throw" : "throwResume"); |
---|
| 927 | if (throwStmt->get_expr()) { |
---|
| 928 | output << " "; |
---|
| 929 | throwStmt->get_expr()->accept( *this ); |
---|
| 930 | } |
---|
| 931 | if (throwStmt->get_target()) { |
---|
| 932 | output << " _At "; |
---|
| 933 | throwStmt->get_target()->accept( *this ); |
---|
| 934 | } |
---|
| 935 | output << ";"; |
---|
| 936 | } |
---|
| 937 | |
---|
[8688ce1] | 938 | void CodeGenerator::visit( WhileStmt * whileStmt ) { |
---|
[321a2481] | 939 | if ( whileStmt->get_isDoWhile() ) { |
---|
[6c4ff37] | 940 | output << "do" ; |
---|
[321a2481] | 941 | } else { |
---|
[6c4ff37] | 942 | output << "while (" ; |
---|
[7f5566b] | 943 | whileStmt->get_condition()->accept( *this ); |
---|
[6c4ff37] | 944 | output << ")"; |
---|
[51587aa] | 945 | } // if |
---|
[2b6c1e0] | 946 | output << " "; |
---|
[51587aa] | 947 | |
---|
[2b6c1e0] | 948 | output << CodeGenerator::printLabels( whileStmt->get_body()->get_labels() ); |
---|
[51587aa] | 949 | whileStmt->get_body()->accept( *this ); |
---|
| 950 | |
---|
[cda48b6] | 951 | output << indent; |
---|
[51587aa] | 952 | |
---|
| 953 | if ( whileStmt->get_isDoWhile() ) { |
---|
[6c4ff37] | 954 | output << " while (" ; |
---|
[7f5566b] | 955 | whileStmt->get_condition()->accept( *this ); |
---|
[6c4ff37] | 956 | output << ");"; |
---|
[51587aa] | 957 | } // if |
---|
| 958 | } |
---|
| 959 | |
---|
[8688ce1] | 960 | void CodeGenerator::visit( ForStmt * forStmt ) { |
---|
[8e9cbb2] | 961 | // initialization is always hoisted, so don't bother doing anything with that |
---|
[145f1fc] | 962 | output << "for (;"; |
---|
[51587aa] | 963 | |
---|
[321a2481] | 964 | if ( forStmt->get_condition() != 0 ) { |
---|
[51587aa] | 965 | forStmt->get_condition()->accept( *this ); |
---|
[3778cb2] | 966 | } // if |
---|
[6c4ff37] | 967 | output << ";"; |
---|
[51587aa] | 968 | |
---|
[321a2481] | 969 | if ( forStmt->get_increment() != 0 ) { |
---|
| 970 | // cast the top-level expression to void to reduce gcc warnings. |
---|
| 971 | Expression * expr = new CastExpr( forStmt->get_increment() ); |
---|
| 972 | expr->accept( *this ); |
---|
[3778cb2] | 973 | } // if |
---|
[2b6c1e0] | 974 | output << ") "; |
---|
[51587aa] | 975 | |
---|
| 976 | if ( forStmt->get_body() != 0 ) { |
---|
[2b6c1e0] | 977 | output << CodeGenerator::printLabels( forStmt->get_body()->get_labels() ); |
---|
[51587aa] | 978 | forStmt->get_body()->accept( *this ); |
---|
| 979 | } // if |
---|
| 980 | } |
---|
| 981 | |
---|
[7e003011] | 982 | void CodeGenerator::visit( __attribute__((unused)) NullStmt * nullStmt ) { |
---|
[cda48b6] | 983 | //output << indent << CodeGenerator::printLabels( nullStmt->get_labels() ); |
---|
[6c4ff37] | 984 | output << "/* null statement */ ;"; |
---|
[51587aa] | 985 | } |
---|
| 986 | |
---|
[8688ce1] | 987 | void CodeGenerator::visit( DeclStmt * declStmt ) { |
---|
[51587aa] | 988 | declStmt->get_decl()->accept( *this ); |
---|
[71f4e4f] | 989 | |
---|
[51587aa] | 990 | if ( doSemicolon( declStmt->get_decl() ) ) { |
---|
[6c4ff37] | 991 | output << ";"; |
---|
[51587aa] | 992 | } // if |
---|
| 993 | } |
---|
| 994 | |
---|
[dd020c0] | 995 | void CodeGenerator::handleStorageClass( DeclarationWithType * decl ) { |
---|
[fb04321] | 996 | if ( decl->get_storageClasses().any() ) { |
---|
[6e8bd43] | 997 | decl->get_storageClasses().print( output ); |
---|
[a7c90d4] | 998 | } // if |
---|
[dd020c0] | 999 | } // CodeGenerator::handleStorageClass |
---|
[9facf3b] | 1000 | |
---|
| 1001 | std::string genName( DeclarationWithType * decl ) { |
---|
| 1002 | CodeGen::OperatorInfo opInfo; |
---|
| 1003 | if ( operatorLookup( decl->get_name(), opInfo ) ) { |
---|
| 1004 | return opInfo.outputName; |
---|
| 1005 | } else { |
---|
| 1006 | return decl->get_name(); |
---|
| 1007 | } // if |
---|
| 1008 | } |
---|
[51b7345] | 1009 | } // namespace CodeGen |
---|
[51587aa] | 1010 | |
---|
| 1011 | // Local Variables: // |
---|
| 1012 | // tab-width: 4 // |
---|
| 1013 | // mode: c++ // |
---|
| 1014 | // compile-command: "make install" // |
---|
| 1015 | // End: // |
---|