[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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[e612146c] | 11 | // Last Modified By : Peter A. Buhr |
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| 12 | // Last Modified On : Sun Sep 3 20:42:52 2017 |
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| 13 | // Update Count : 490 |
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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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[e612146c] | 61 | if ( ConstantExpr * asmName = dynamic_cast<ConstantExpr *>(decl->get_asmName()) ) { |
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[58dd019] | 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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[d22e90f] | 81 | /* Using updateLocation at the beginning of a node and endl |
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[8bafacc] | 82 | * within a node should become the method of formating. |
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| 83 | */ |
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| 84 | void CodeGenerator::updateLocation( CodeLocation const & to ) { |
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[d22e90f] | 85 | // skip if linemarks shouldn't appear or if codelocation is unset |
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| 86 | if ( !lineMarks || to.isUnset() ) return; |
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| 87 | |
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| 88 | if ( currentLocation.followedBy( to, 0 ) ) { |
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[8bafacc] | 89 | return; |
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| 90 | } else if ( currentLocation.followedBy( to, 1 ) ) { |
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| 91 | output << "\n" << indent; |
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[d48e529] | 92 | currentLocation.first_line += 1; |
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[8bafacc] | 93 | } else if ( currentLocation.followedBy( to, 2 ) ) { |
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| 94 | output << "\n\n" << indent; |
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[d48e529] | 95 | currentLocation.first_line += 2; |
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[8bafacc] | 96 | } else { |
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[d48e529] | 97 | output << "\n# " << to.first_line << " \"" << to.filename |
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[8bafacc] | 98 | << "\"\n" << indent; |
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| 99 | currentLocation = to; |
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| 100 | } |
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| 101 | output << std::flush; |
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| 102 | } |
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[c850687] | 103 | |
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[8bafacc] | 104 | void CodeGenerator::updateLocation( BaseSyntaxNode const * to ) { |
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| 105 | updateLocation( to->location ); |
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[c850687] | 106 | } |
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| 107 | |
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[d22e90f] | 108 | // replace endl |
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| 109 | ostream & CodeGenerator::LineEnder::operator()( ostream & os ) const { |
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| 110 | // if ( !cg.lineMarks ) { |
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| 111 | // os << "\n" << cg.indent << std::flush; |
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| 112 | // } |
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| 113 | os << "\n" << std::flush; |
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| 114 | cg.currentLocation.first_line++; |
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| 115 | // os << "/* did endl; current loc is: " << cg.currentLocation.first_line << "*/"; |
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| 116 | return os; |
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[c850687] | 117 | } |
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| 118 | |
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[d22e90f] | 119 | CodeGenerator::CodeGenerator( std::ostream & os, bool pretty, bool genC, bool lineMarks ) : indent( CodeGenerator::tabsize ), output( os ), printLabels( *this ), pretty( pretty ), genC( genC ), lineMarks( lineMarks ), endl( *this ) {} |
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[cda48b6] | 120 | |
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[486341f] | 121 | string CodeGenerator::mangleName( DeclarationWithType * decl ) { |
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[35b1bf4] | 122 | if ( pretty ) return decl->get_name(); |
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[51587aa] | 123 | if ( decl->get_mangleName() != "" ) { |
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[f326f99] | 124 | // need to incorporate scope level in order to differentiate names for destructors |
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| 125 | return decl->get_scopedMangleName(); |
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[51587aa] | 126 | } else { |
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| 127 | return decl->get_name(); |
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| 128 | } // if |
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| 129 | } |
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[94b4364] | 130 | |
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[44a81853] | 131 | void CodeGenerator::genAttributes( list< Attribute * > & attributes ) { |
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| 132 | if ( attributes.empty() ) return; |
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| 133 | output << "__attribute__ (("; |
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| 134 | for ( list< Attribute * >::iterator attr( attributes.begin() );; ) { |
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| 135 | output << (*attr)->get_name(); |
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| 136 | if ( ! (*attr)->get_parameters().empty() ) { |
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| 137 | output << "("; |
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| 138 | genCommaList( (*attr)->get_parameters().begin(), (*attr)->get_parameters().end() ); |
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| 139 | output << ")"; |
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| 140 | } // if |
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| 141 | if ( ++attr == attributes.end() ) break; |
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| 142 | output << ","; // separator |
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| 143 | } // for |
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| 144 | output << ")) "; |
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| 145 | } // CodeGenerator::genAttributes |
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[7baed7d] | 146 | |
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[9857e8d] | 147 | // *** BaseSyntaxNode |
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[d22e90f] | 148 | void CodeGenerator::previsit( BaseSyntaxNode * node ) { |
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[9857e8d] | 149 | // turn off automatic recursion for all nodes, to allow each visitor to |
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| 150 | // precisely control the order in which its children are visited. |
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| 151 | visit_children = false; |
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[d22e90f] | 152 | updateLocation( node ); |
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[9857e8d] | 153 | } |
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| 154 | |
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| 155 | // *** BaseSyntaxNode |
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| 156 | void CodeGenerator::postvisit( BaseSyntaxNode * node ) { |
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| 157 | std::stringstream ss; |
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| 158 | node->print( ss ); |
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| 159 | assertf( false, "Unhandled node reached in CodeGenerator: %s", ss.str().c_str() ); |
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| 160 | } |
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[7baed7d] | 161 | |
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[4810867] | 162 | // *** Declarations |
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[9857e8d] | 163 | void CodeGenerator::postvisit( FunctionDecl * functionDecl ) { |
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[8e9cbb2] | 164 | extension( functionDecl ); |
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[7baed7d] | 165 | genAttributes( functionDecl->get_attributes() ); |
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| 166 | |
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[51587aa] | 167 | handleStorageClass( functionDecl ); |
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[6e8bd43] | 168 | functionDecl->get_funcSpec().print( output ); |
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[dd020c0] | 169 | |
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[e39241b] | 170 | output << genType( functionDecl->get_functionType(), mangleName( functionDecl ), pretty, genC ); |
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[51587aa] | 171 | |
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[58dd019] | 172 | asmName( functionDecl ); |
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| 173 | |
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[51587aa] | 174 | if ( functionDecl->get_statements() ) { |
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[9857e8d] | 175 | functionDecl->get_statements()->accept( *visitor ); |
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[51587aa] | 176 | } // if |
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| 177 | } |
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| 178 | |
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[9857e8d] | 179 | void CodeGenerator::postvisit( ObjectDecl * objectDecl ) { |
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[e39241b] | 180 | if (objectDecl->get_name().empty() && genC ) { |
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| 181 | // only generate an anonymous name when generating C code, otherwise it clutters the output too much |
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[d9c8a59] | 182 | static UniqueName name = { "__anonymous_object" }; |
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| 183 | objectDecl->set_name( name.newName() ); |
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| 184 | } |
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| 185 | |
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[8e9cbb2] | 186 | extension( objectDecl ); |
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[f9cebb5] | 187 | genAttributes( objectDecl->get_attributes() ); |
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| 188 | |
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[51587aa] | 189 | handleStorageClass( objectDecl ); |
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[e39241b] | 190 | output << genType( objectDecl->get_type(), mangleName( objectDecl ), pretty, genC ); |
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[71f4e4f] | 191 | |
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[58dd019] | 192 | asmName( objectDecl ); |
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| 193 | |
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[51587aa] | 194 | if ( objectDecl->get_init() ) { |
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[6c4ff37] | 195 | output << " = "; |
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[9857e8d] | 196 | objectDecl->get_init()->accept( *visitor ); |
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[51587aa] | 197 | } // if |
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[3778cb2] | 198 | |
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[51587aa] | 199 | if ( objectDecl->get_bitfieldWidth() ) { |
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[6c4ff37] | 200 | output << ":"; |
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[9857e8d] | 201 | objectDecl->get_bitfieldWidth()->accept( *visitor ); |
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[51587aa] | 202 | } // if |
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| 203 | } |
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| 204 | |
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[5f642e38] | 205 | void CodeGenerator::handleAggregate( AggregateDecl * aggDecl, const std::string & kind ) { |
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[c0aa336] | 206 | genAttributes( aggDecl->get_attributes() ); |
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[35b1bf4] | 207 | |
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[e39241b] | 208 | if( ! aggDecl->get_parameters().empty() && ! genC ) { |
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| 209 | // assertf( ! genC, "Aggregate type parameters should not reach code generation." ); |
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| 210 | output << "forall("; |
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| 211 | genCommaList( aggDecl->get_parameters().begin(), aggDecl->get_parameters().end() ); |
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| 212 | output << ")" << endl; |
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[e6cee92] | 213 | output << indent; |
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[e39241b] | 214 | } |
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| 215 | |
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[a984e65] | 216 | output << kind << aggDecl->get_name(); |
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[71f4e4f] | 217 | |
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[2c57025] | 218 | if ( aggDecl->has_body() ) { |
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| 219 | std::list< Declaration * > & memb = aggDecl->get_members(); |
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[94b4364] | 220 | output << " {" << endl; |
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[51587aa] | 221 | |
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[f7cb0bc] | 222 | ++indent; |
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[3778cb2] | 223 | for ( std::list< Declaration* >::iterator i = memb.begin(); i != memb.end(); i++ ) { |
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[87e08e24] | 224 | output << indent; |
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[9857e8d] | 225 | (*i)->accept( *visitor ); |
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[6c4ff37] | 226 | output << ";" << endl; |
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[3778cb2] | 227 | } // for |
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[51587aa] | 228 | |
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[f7cb0bc] | 229 | --indent; |
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[51587aa] | 230 | |
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[cda48b6] | 231 | output << indent << "}"; |
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[17cd4eb] | 232 | } // if |
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[51587aa] | 233 | } |
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[17cd4eb] | 234 | |
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[9857e8d] | 235 | void CodeGenerator::postvisit( StructDecl * structDecl ) { |
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[8e9cbb2] | 236 | extension( structDecl ); |
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[5f642e38] | 237 | handleAggregate( structDecl, "struct " ); |
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[51587aa] | 238 | } |
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[17cd4eb] | 239 | |
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[9857e8d] | 240 | void CodeGenerator::postvisit( UnionDecl * unionDecl ) { |
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[8e9cbb2] | 241 | extension( unionDecl ); |
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[5f642e38] | 242 | handleAggregate( unionDecl, "union " ); |
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[51587aa] | 243 | } |
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[71f4e4f] | 244 | |
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[9857e8d] | 245 | void CodeGenerator::postvisit( EnumDecl * enumDecl ) { |
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[8e9cbb2] | 246 | extension( enumDecl ); |
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[6c4ff37] | 247 | output << "enum "; |
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[c0aa336] | 248 | genAttributes( enumDecl->get_attributes() ); |
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[51587aa] | 249 | |
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[a984e65] | 250 | output << enumDecl->get_name(); |
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[71f4e4f] | 251 | |
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[8e9cbb2] | 252 | std::list< Declaration* > &memb = enumDecl->get_members(); |
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[51587aa] | 253 | |
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| 254 | if ( ! memb.empty() ) { |
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[cda48b6] | 255 | output << " {" << endl; |
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[51587aa] | 256 | |
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[f7cb0bc] | 257 | ++indent; |
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[51587aa] | 258 | for ( std::list< Declaration* >::iterator i = memb.begin(); i != memb.end(); i++) { |
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[8688ce1] | 259 | ObjectDecl * obj = dynamic_cast< ObjectDecl* >( *i ); |
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[51587aa] | 260 | assert( obj ); |
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[87e08e24] | 261 | output << indent << mangleName( obj ); |
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[51587aa] | 262 | if ( obj->get_init() ) { |
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[6c4ff37] | 263 | output << " = "; |
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[9857e8d] | 264 | obj->get_init()->accept( *visitor ); |
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[51587aa] | 265 | } // if |
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[6c4ff37] | 266 | output << "," << endl; |
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[51587aa] | 267 | } // for |
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| 268 | |
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[f7cb0bc] | 269 | --indent; |
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[51587aa] | 270 | |
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[cda48b6] | 271 | output << indent << "}"; |
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[51587aa] | 272 | } // if |
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| 273 | } |
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[71f4e4f] | 274 | |
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[9857e8d] | 275 | void CodeGenerator::postvisit( TraitDecl * traitDecl ) { |
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[a0c7dc36] | 276 | assertf( ! genC, "TraitDecls should not reach code generation." ); |
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[a984e65] | 277 | extension( traitDecl ); |
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| 278 | handleAggregate( traitDecl, "trait " ); |
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| 279 | } |
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[71f4e4f] | 280 | |
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[9857e8d] | 281 | void CodeGenerator::postvisit( TypedefDecl * typeDecl ) { |
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[e39241b] | 282 | assertf( ! genC, "Typedefs are removed and substituted in earlier passes." ); |
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| 283 | output << "typedef "; |
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| 284 | output << genType( typeDecl->get_base(), typeDecl->get_name(), pretty, genC ) << endl; |
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[51587aa] | 285 | } |
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[71f4e4f] | 286 | |
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[9857e8d] | 287 | void CodeGenerator::postvisit( TypeDecl * typeDecl ) { |
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[a0c7dc36] | 288 | assertf( ! genC, "TypeDecls should not reach code generation." ); |
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| 289 | output << typeDecl->genTypeString() << " " << typeDecl->get_name(); |
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| 290 | if ( typeDecl->get_kind() != TypeDecl::Any && typeDecl->get_sized() ) { |
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| 291 | output << " | sized(" << typeDecl->get_name() << ")"; |
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| 292 | } |
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| 293 | if ( ! typeDecl->get_assertions().empty() ) { |
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| 294 | output << " | { "; |
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| 295 | genCommaList( typeDecl->get_assertions().begin(), typeDecl->get_assertions().end() ); |
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| 296 | output << " }"; |
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[e39241b] | 297 | } |
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[51587aa] | 298 | } |
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| 299 | |
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[9857e8d] | 300 | void CodeGenerator::postvisit( Designation * designation ) { |
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[e4d829b] | 301 | std::list< Expression * > designators = designation->get_designators(); |
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[e45215c] | 302 | if ( designators.size() == 0 ) return; |
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[e4d829b] | 303 | for ( Expression * des : designators ) { |
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[62423350] | 304 | if ( dynamic_cast< NameExpr * >( des ) || dynamic_cast< VariableExpr * >( des ) ) { |
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| 305 | // if expression is a NameExpr or VariableExpr, then initializing aggregate member |
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| 306 | output << "."; |
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[9857e8d] | 307 | des->accept( *visitor ); |
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[e4d829b] | 308 | } else { |
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[62423350] | 309 | // otherwise, it has to be a ConstantExpr or CastExpr, initializing array eleemnt |
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| 310 | output << "["; |
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[9857e8d] | 311 | des->accept( *visitor ); |
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[62423350] | 312 | output << "]"; |
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[3778cb2] | 313 | } // if |
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| 314 | } // for |
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[e45215c] | 315 | output << " = "; |
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| 316 | } |
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| 317 | |
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[9857e8d] | 318 | void CodeGenerator::postvisit( SingleInit * init ) { |
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| 319 | init->get_value()->accept( *visitor ); |
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[51587aa] | 320 | } |
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| 321 | |
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[9857e8d] | 322 | void CodeGenerator::postvisit( ListInit * init ) { |
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[e4d829b] | 323 | auto initBegin = init->begin(); |
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| 324 | auto initEnd = init->end(); |
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| 325 | auto desigBegin = init->get_designations().begin(); |
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| 326 | auto desigEnd = init->get_designations().end(); |
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| 327 | |
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[6c4ff37] | 328 | output << "{ "; |
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[e4d829b] | 329 | for ( ; initBegin != initEnd && desigBegin != desigEnd; ) { |
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[9857e8d] | 330 | (*desigBegin)->accept( *visitor ); |
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| 331 | (*initBegin)->accept( *visitor ); |
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[e4d829b] | 332 | ++initBegin, ++desigBegin; |
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| 333 | if ( initBegin != initEnd ) { |
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| 334 | output << ", "; |
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| 335 | } |
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| 336 | } |
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[6c4ff37] | 337 | output << " }"; |
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[e4d829b] | 338 | assertf( initBegin == initEnd && desigBegin == desigEnd, "Initializers and designators not the same length. %s", toString( init ).c_str() ); |
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[51587aa] | 339 | } |
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| 340 | |
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[d22e90f] | 341 | void CodeGenerator::postvisit( ConstructorInit * init ){ |
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[e39241b] | 342 | assertf( ! genC, "ConstructorInit nodes should not reach code generation." ); |
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[e6cee92] | 343 | // pseudo-output for constructor/destructor pairs |
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[d22e90f] | 344 | output << "<ctorinit>{" << endl << ++indent << "ctor: "; |
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[9857e8d] | 345 | maybeAccept( init->get_ctor(), *visitor ); |
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[d22e90f] | 346 | output << ", " << endl << indent << "dtor: "; |
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[9857e8d] | 347 | maybeAccept( init->get_dtor(), *visitor ); |
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[d22e90f] | 348 | output << endl << --indent << "}"; |
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[fc638d2] | 349 | } |
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| 350 | |
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[9857e8d] | 351 | void CodeGenerator::postvisit( Constant * constant ) { |
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[6c4ff37] | 352 | output << constant->get_value() ; |
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[51587aa] | 353 | } |
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| 354 | |
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[4810867] | 355 | // *** Expressions |
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[9857e8d] | 356 | void CodeGenerator::postvisit( ApplicationExpr * applicationExpr ) { |
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[e04ef3a] | 357 | extension( applicationExpr ); |
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[8688ce1] | 358 | if ( VariableExpr * varExpr = dynamic_cast< VariableExpr* >( applicationExpr->get_function() ) ) { |
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[51587aa] | 359 | OperatorInfo opInfo; |
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| 360 | if ( varExpr->get_var()->get_linkage() == LinkageSpec::Intrinsic && operatorLookup( varExpr->get_var()->get_name(), opInfo ) ) { |
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| 361 | std::list< Expression* >::iterator arg = applicationExpr->get_args().begin(); |
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| 362 | switch ( opInfo.type ) { |
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| 363 | case OT_INDEX: |
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| 364 | assert( applicationExpr->get_args().size() == 2 ); |
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[9857e8d] | 365 | (*arg++)->accept( *visitor ); |
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[6c4ff37] | 366 | output << "["; |
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[9857e8d] | 367 | (*arg)->accept( *visitor ); |
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[6c4ff37] | 368 | output << "]"; |
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[51587aa] | 369 | break; |
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[71f4e4f] | 370 | |
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[51587aa] | 371 | case OT_CALL: |
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[356189a] | 372 | // there are no intrinsic definitions of the function call operator |
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[51587aa] | 373 | assert( false ); |
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| 374 | break; |
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[71f4e4f] | 375 | |
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[f1e012b] | 376 | case OT_CTOR: |
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[c2ce2350] | 377 | case OT_DTOR: |
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[356189a] | 378 | if ( applicationExpr->get_args().size() == 1 ) { |
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[8e9cbb2] | 379 | // the expression fed into a single parameter constructor or destructor may contain side |
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| 380 | // effects, so must still output this expression |
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[64071c2] | 381 | output << "("; |
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[9857e8d] | 382 | (*arg++)->accept( *visitor ); |
---|
[64071c2] | 383 | output << ") /* " << opInfo.inputName << " */"; |
---|
[356189a] | 384 | } else if ( applicationExpr->get_args().size() == 2 ) { |
---|
[c2ce2350] | 385 | // intrinsic two parameter constructors are essentially bitwise assignment |
---|
[356189a] | 386 | output << "("; |
---|
[9857e8d] | 387 | (*arg++)->accept( *visitor ); |
---|
[356189a] | 388 | output << opInfo.symbol; |
---|
[9857e8d] | 389 | (*arg)->accept( *visitor ); |
---|
[c2ce2350] | 390 | output << ") /* " << opInfo.inputName << " */"; |
---|
[356189a] | 391 | } else { |
---|
[c2ce2350] | 392 | // no constructors with 0 or more than 2 parameters |
---|
[356189a] | 393 | assert( false ); |
---|
[8688ce1] | 394 | } // if |
---|
[356189a] | 395 | break; |
---|
[f1e012b] | 396 | |
---|
[51587aa] | 397 | case OT_PREFIX: |
---|
| 398 | case OT_PREFIXASSIGN: |
---|
| 399 | assert( applicationExpr->get_args().size() == 1 ); |
---|
[6c4ff37] | 400 | output << "("; |
---|
| 401 | output << opInfo.symbol; |
---|
[9857e8d] | 402 | (*arg)->accept( *visitor ); |
---|
[6c4ff37] | 403 | output << ")"; |
---|
[51587aa] | 404 | break; |
---|
[71f4e4f] | 405 | |
---|
[51587aa] | 406 | case OT_POSTFIX: |
---|
| 407 | case OT_POSTFIXASSIGN: |
---|
| 408 | assert( applicationExpr->get_args().size() == 1 ); |
---|
[9857e8d] | 409 | (*arg)->accept( *visitor ); |
---|
[6c4ff37] | 410 | output << opInfo.symbol; |
---|
[51587aa] | 411 | break; |
---|
| 412 | |
---|
[f1e012b] | 413 | |
---|
[51587aa] | 414 | case OT_INFIX: |
---|
| 415 | case OT_INFIXASSIGN: |
---|
| 416 | assert( applicationExpr->get_args().size() == 2 ); |
---|
[6c4ff37] | 417 | output << "("; |
---|
[9857e8d] | 418 | (*arg++)->accept( *visitor ); |
---|
[6c4ff37] | 419 | output << opInfo.symbol; |
---|
[9857e8d] | 420 | (*arg)->accept( *visitor ); |
---|
[6c4ff37] | 421 | output << ")"; |
---|
[51587aa] | 422 | break; |
---|
[71f4e4f] | 423 | |
---|
[51587aa] | 424 | case OT_CONSTANT: |
---|
[721f17a] | 425 | case OT_LABELADDRESS: |
---|
| 426 | // there are no intrinsic definitions of 0/1 or label addresses as functions |
---|
[51587aa] | 427 | assert( false ); |
---|
[3778cb2] | 428 | } // switch |
---|
[17cd4eb] | 429 | } else { |
---|
[9857e8d] | 430 | varExpr->accept( *visitor ); |
---|
[6c4ff37] | 431 | output << "("; |
---|
[51587aa] | 432 | genCommaList( applicationExpr->get_args().begin(), applicationExpr->get_args().end() ); |
---|
[6c4ff37] | 433 | output << ")"; |
---|
[17cd4eb] | 434 | } // if |
---|
[51587aa] | 435 | } else { |
---|
[9857e8d] | 436 | applicationExpr->get_function()->accept( *visitor ); |
---|
[6c4ff37] | 437 | output << "("; |
---|
[51587aa] | 438 | genCommaList( applicationExpr->get_args().begin(), applicationExpr->get_args().end() ); |
---|
[6c4ff37] | 439 | output << ")"; |
---|
[51587aa] | 440 | } // if |
---|
| 441 | } |
---|
[71f4e4f] | 442 | |
---|
[9857e8d] | 443 | void CodeGenerator::postvisit( UntypedExpr * untypedExpr ) { |
---|
[e04ef3a] | 444 | extension( untypedExpr ); |
---|
[22bc276] | 445 | if ( NameExpr * nameExpr = dynamic_cast< NameExpr* >( untypedExpr->function ) ) { |
---|
[51587aa] | 446 | OperatorInfo opInfo; |
---|
[22bc276] | 447 | if ( operatorLookup( nameExpr->name, opInfo ) ) { |
---|
| 448 | std::list< Expression* >::iterator arg = untypedExpr->args.begin(); |
---|
[51587aa] | 449 | switch ( opInfo.type ) { |
---|
| 450 | case OT_INDEX: |
---|
[22bc276] | 451 | assert( untypedExpr->args.size() == 2 ); |
---|
[9857e8d] | 452 | (*arg++)->accept( *visitor ); |
---|
[6c4ff37] | 453 | output << "["; |
---|
[9857e8d] | 454 | (*arg)->accept( *visitor ); |
---|
[6c4ff37] | 455 | output << "]"; |
---|
[51587aa] | 456 | break; |
---|
[71f4e4f] | 457 | |
---|
[51587aa] | 458 | case OT_CALL: |
---|
[f1e012b] | 459 | assert( false ); |
---|
| 460 | |
---|
[c2ce2350] | 461 | case OT_CTOR: |
---|
| 462 | case OT_DTOR: |
---|
[22bc276] | 463 | if ( untypedExpr->args.size() == 1 ) { |
---|
[8e9cbb2] | 464 | // the expression fed into a single parameter constructor or destructor may contain side |
---|
| 465 | // effects, so must still output this expression |
---|
[64071c2] | 466 | output << "("; |
---|
[9857e8d] | 467 | (*arg++)->accept( *visitor ); |
---|
[64071c2] | 468 | output << ") /* " << opInfo.inputName << " */"; |
---|
[c2ce2350] | 469 | } else if ( untypedExpr->get_args().size() == 2 ) { |
---|
| 470 | // intrinsic two parameter constructors are essentially bitwise assignment |
---|
| 471 | output << "("; |
---|
[9857e8d] | 472 | (*arg++)->accept( *visitor ); |
---|
[c2ce2350] | 473 | output << opInfo.symbol; |
---|
[9857e8d] | 474 | (*arg)->accept( *visitor ); |
---|
[c2ce2350] | 475 | output << ") /* " << opInfo.inputName << " */"; |
---|
| 476 | } else { |
---|
| 477 | // no constructors with 0 or more than 2 parameters |
---|
[4e8949f] | 478 | assertf( ! genC, "UntypedExpr constructor/destructor with 0 or more than 2 parameters." ); |
---|
| 479 | output << "("; |
---|
| 480 | (*arg++)->accept( *visitor ); |
---|
| 481 | output << opInfo.symbol << "{ "; |
---|
[22bc276] | 482 | genCommaList( arg, untypedExpr->args.end() ); |
---|
[4e8949f] | 483 | output << "}) /* " << opInfo.inputName << " */"; |
---|
[3778cb2] | 484 | } // if |
---|
[51587aa] | 485 | break; |
---|
[71f4e4f] | 486 | |
---|
[51587aa] | 487 | case OT_PREFIX: |
---|
| 488 | case OT_PREFIXASSIGN: |
---|
[de62360d] | 489 | case OT_LABELADDRESS: |
---|
[22bc276] | 490 | assert( untypedExpr->args.size() == 1 ); |
---|
[6c4ff37] | 491 | output << "("; |
---|
| 492 | output << opInfo.symbol; |
---|
[9857e8d] | 493 | (*arg)->accept( *visitor ); |
---|
[6c4ff37] | 494 | output << ")"; |
---|
[51587aa] | 495 | break; |
---|
[71f4e4f] | 496 | |
---|
[51587aa] | 497 | case OT_POSTFIX: |
---|
| 498 | case OT_POSTFIXASSIGN: |
---|
[22bc276] | 499 | assert( untypedExpr->args.size() == 1 ); |
---|
[9857e8d] | 500 | (*arg)->accept( *visitor ); |
---|
[6c4ff37] | 501 | output << opInfo.symbol; |
---|
[51587aa] | 502 | break; |
---|
[71f4e4f] | 503 | |
---|
[51587aa] | 504 | case OT_INFIX: |
---|
| 505 | case OT_INFIXASSIGN: |
---|
[22bc276] | 506 | assert( untypedExpr->args.size() == 2 ); |
---|
[6c4ff37] | 507 | output << "("; |
---|
[9857e8d] | 508 | (*arg++)->accept( *visitor ); |
---|
[6c4ff37] | 509 | output << opInfo.symbol; |
---|
[9857e8d] | 510 | (*arg)->accept( *visitor ); |
---|
[6c4ff37] | 511 | output << ")"; |
---|
[51587aa] | 512 | break; |
---|
[71f4e4f] | 513 | |
---|
[51587aa] | 514 | case OT_CONSTANT: |
---|
| 515 | // there are no intrinsic definitions of 0 or 1 as functions |
---|
| 516 | assert( false ); |
---|
[3778cb2] | 517 | } // switch |
---|
[51587aa] | 518 | } else { |
---|
[22bc276] | 519 | // builtin routines |
---|
| 520 | nameExpr->accept( *visitor ); |
---|
| 521 | output << "("; |
---|
| 522 | genCommaList( untypedExpr->args.begin(), untypedExpr->args.end() ); |
---|
| 523 | output << ")"; |
---|
[51587aa] | 524 | } // if |
---|
| 525 | } else { |
---|
[22bc276] | 526 | untypedExpr->function->accept( *visitor ); |
---|
[6c4ff37] | 527 | output << "("; |
---|
[22bc276] | 528 | genCommaList( untypedExpr->args.begin(), untypedExpr->args.end() ); |
---|
[6c4ff37] | 529 | output << ")"; |
---|
[51587aa] | 530 | } // if |
---|
| 531 | } |
---|
[71f4e4f] | 532 | |
---|
[9857e8d] | 533 | void CodeGenerator::postvisit( RangeExpr * rangeExpr ) { |
---|
[22bc276] | 534 | rangeExpr->low->accept( *visitor ); |
---|
[064e3ff] | 535 | output << " ... "; |
---|
[22bc276] | 536 | rangeExpr->high->accept( *visitor ); |
---|
[064e3ff] | 537 | } |
---|
| 538 | |
---|
[9857e8d] | 539 | void CodeGenerator::postvisit( NameExpr * nameExpr ) { |
---|
[e04ef3a] | 540 | extension( nameExpr ); |
---|
[51587aa] | 541 | OperatorInfo opInfo; |
---|
| 542 | if ( operatorLookup( nameExpr->get_name(), opInfo ) ) { |
---|
| 543 | assert( opInfo.type == OT_CONSTANT ); |
---|
[6c4ff37] | 544 | output << opInfo.symbol; |
---|
[51587aa] | 545 | } else { |
---|
[6c4ff37] | 546 | output << nameExpr->get_name(); |
---|
[51587aa] | 547 | } // if |
---|
| 548 | } |
---|
[71f4e4f] | 549 | |
---|
[9857e8d] | 550 | void CodeGenerator::postvisit( AddressExpr * addressExpr ) { |
---|
[e04ef3a] | 551 | extension( addressExpr ); |
---|
[6c4ff37] | 552 | output << "(&"; |
---|
[9857e8d] | 553 | addressExpr->arg->accept( *visitor ); |
---|
[6c4ff37] | 554 | output << ")"; |
---|
[51587aa] | 555 | } |
---|
| 556 | |
---|
[9857e8d] | 557 | void CodeGenerator::postvisit( LabelAddressExpr *addressExpr ) { |
---|
[5809461] | 558 | extension( addressExpr ); |
---|
| 559 | output << "(&&" << addressExpr->arg << ")"; |
---|
| 560 | } |
---|
| 561 | |
---|
[9857e8d] | 562 | void CodeGenerator::postvisit( CastExpr * castExpr ) { |
---|
[e04ef3a] | 563 | extension( castExpr ); |
---|
[803deb1] | 564 | output << "("; |
---|
[906e24d] | 565 | if ( castExpr->get_result()->isVoid() ) { |
---|
[803deb1] | 566 | output << "(void)" ; |
---|
[d104b02] | 567 | } else { |
---|
| 568 | // at least one result type of cast. |
---|
| 569 | // Note: previously, lvalue casts were skipped. Since it's now impossible for the user to write |
---|
| 570 | // an lvalue cast, this has been taken out. |
---|
[803deb1] | 571 | output << "("; |
---|
[e39241b] | 572 | output << genType( castExpr->get_result(), "", pretty, genC ); |
---|
[71f4e4f] | 573 | output << ")"; |
---|
[3778cb2] | 574 | } // if |
---|
[9857e8d] | 575 | castExpr->get_arg()->accept( *visitor ); |
---|
[803deb1] | 576 | output << ")"; |
---|
[51587aa] | 577 | } |
---|
[71f4e4f] | 578 | |
---|
[9857e8d] | 579 | void CodeGenerator::postvisit( VirtualCastExpr * castExpr ) { |
---|
[a5f0529] | 580 | assertf( ! genC, "VirtualCastExpr should not reach code generation." ); |
---|
| 581 | extension( castExpr ); |
---|
| 582 | output << "(virtual "; |
---|
[9857e8d] | 583 | castExpr->get_arg()->accept( *visitor ); |
---|
[a5f0529] | 584 | output << ")"; |
---|
| 585 | } |
---|
| 586 | |
---|
[9857e8d] | 587 | void CodeGenerator::postvisit( UntypedMemberExpr * memberExpr ) { |
---|
[e39241b] | 588 | assertf( ! genC, "UntypedMemberExpr should not reach code generation." ); |
---|
| 589 | extension( memberExpr ); |
---|
[9857e8d] | 590 | memberExpr->get_aggregate()->accept( *visitor ); |
---|
[5f642e38] | 591 | output << "."; |
---|
[9857e8d] | 592 | memberExpr->get_member()->accept( *visitor ); |
---|
[51587aa] | 593 | } |
---|
[71f4e4f] | 594 | |
---|
[9857e8d] | 595 | void CodeGenerator::postvisit( MemberExpr * memberExpr ) { |
---|
[e04ef3a] | 596 | extension( memberExpr ); |
---|
[9857e8d] | 597 | memberExpr->get_aggregate()->accept( *visitor ); |
---|
[6c4ff37] | 598 | output << "." << mangleName( memberExpr->get_member() ); |
---|
[51587aa] | 599 | } |
---|
[71f4e4f] | 600 | |
---|
[9857e8d] | 601 | void CodeGenerator::postvisit( VariableExpr * variableExpr ) { |
---|
[e04ef3a] | 602 | extension( variableExpr ); |
---|
[51587aa] | 603 | OperatorInfo opInfo; |
---|
| 604 | if ( variableExpr->get_var()->get_linkage() == LinkageSpec::Intrinsic && operatorLookup( variableExpr->get_var()->get_name(), opInfo ) && opInfo.type == OT_CONSTANT ) { |
---|
[6c4ff37] | 605 | output << opInfo.symbol; |
---|
[51587aa] | 606 | } else { |
---|
[6c4ff37] | 607 | output << mangleName( variableExpr->get_var() ); |
---|
[51587aa] | 608 | } // if |
---|
| 609 | } |
---|
[71f4e4f] | 610 | |
---|
[9857e8d] | 611 | void CodeGenerator::postvisit( ConstantExpr * constantExpr ) { |
---|
[51587aa] | 612 | assert( constantExpr->get_constant() ); |
---|
[e04ef3a] | 613 | extension( constantExpr ); |
---|
[9857e8d] | 614 | constantExpr->get_constant()->accept( *visitor ); |
---|
[51587aa] | 615 | } |
---|
[71f4e4f] | 616 | |
---|
[9857e8d] | 617 | void CodeGenerator::postvisit( SizeofExpr * sizeofExpr ) { |
---|
[e04ef3a] | 618 | extension( sizeofExpr ); |
---|
[6c4ff37] | 619 | output << "sizeof("; |
---|
[51587aa] | 620 | if ( sizeofExpr->get_isType() ) { |
---|
[e39241b] | 621 | output << genType( sizeofExpr->get_type(), "", pretty, genC ); |
---|
[51587aa] | 622 | } else { |
---|
[9857e8d] | 623 | sizeofExpr->get_expr()->accept( *visitor ); |
---|
[51587aa] | 624 | } // if |
---|
[6c4ff37] | 625 | output << ")"; |
---|
[51587aa] | 626 | } |
---|
[47534159] | 627 | |
---|
[9857e8d] | 628 | void CodeGenerator::postvisit( AlignofExpr * alignofExpr ) { |
---|
[47534159] | 629 | // use GCC extension to avoid bumping std to C11 |
---|
[8e9cbb2] | 630 | extension( alignofExpr ); |
---|
[47534159] | 631 | output << "__alignof__("; |
---|
[25a054f] | 632 | if ( alignofExpr->get_isType() ) { |
---|
[e39241b] | 633 | output << genType( alignofExpr->get_type(), "", pretty, genC ); |
---|
[47534159] | 634 | } else { |
---|
[9857e8d] | 635 | alignofExpr->get_expr()->accept( *visitor ); |
---|
[47534159] | 636 | } // if |
---|
| 637 | output << ")"; |
---|
| 638 | } |
---|
[71f4e4f] | 639 | |
---|
[9857e8d] | 640 | void CodeGenerator::postvisit( UntypedOffsetofExpr * offsetofExpr ) { |
---|
[e39241b] | 641 | assertf( ! genC, "UntypedOffsetofExpr should not reach code generation." ); |
---|
| 642 | output << "offsetof("; |
---|
| 643 | output << genType( offsetofExpr->get_type(), "", pretty, genC ); |
---|
| 644 | output << ", " << offsetofExpr->get_member(); |
---|
| 645 | output << ")"; |
---|
[2a4b088] | 646 | } |
---|
| 647 | |
---|
[9857e8d] | 648 | void CodeGenerator::postvisit( OffsetofExpr * offsetofExpr ) { |
---|
[25a054f] | 649 | // use GCC builtin |
---|
| 650 | output << "__builtin_offsetof("; |
---|
[e39241b] | 651 | output << genType( offsetofExpr->get_type(), "", pretty, genC ); |
---|
[e551c69] | 652 | output << ", " << mangleName( offsetofExpr->get_member() ); |
---|
[25a054f] | 653 | output << ")"; |
---|
| 654 | } |
---|
[d63eeb0] | 655 | |
---|
[9857e8d] | 656 | void CodeGenerator::postvisit( OffsetPackExpr * offsetPackExpr ) { |
---|
[e39241b] | 657 | assertf( ! genC, "OffsetPackExpr should not reach code generation." ); |
---|
| 658 | output << "__CFA_offsetpack(" << genType( offsetPackExpr->get_type(), "", pretty, genC ) << ")"; |
---|
[afc1045] | 659 | } |
---|
[70a06f6] | 660 | |
---|
[9857e8d] | 661 | void CodeGenerator::postvisit( LogicalExpr * logicalExpr ) { |
---|
[e04ef3a] | 662 | extension( logicalExpr ); |
---|
[6c4ff37] | 663 | output << "("; |
---|
[9857e8d] | 664 | logicalExpr->get_arg1()->accept( *visitor ); |
---|
[51587aa] | 665 | if ( logicalExpr->get_isAnd() ) { |
---|
[6c4ff37] | 666 | output << " && "; |
---|
[51587aa] | 667 | } else { |
---|
[6c4ff37] | 668 | output << " || "; |
---|
[51587aa] | 669 | } // if |
---|
[9857e8d] | 670 | logicalExpr->get_arg2()->accept( *visitor ); |
---|
[6c4ff37] | 671 | output << ")"; |
---|
[51587aa] | 672 | } |
---|
[71f4e4f] | 673 | |
---|
[9857e8d] | 674 | void CodeGenerator::postvisit( ConditionalExpr * conditionalExpr ) { |
---|
[e04ef3a] | 675 | extension( conditionalExpr ); |
---|
[6c4ff37] | 676 | output << "("; |
---|
[9857e8d] | 677 | conditionalExpr->get_arg1()->accept( *visitor ); |
---|
[6c4ff37] | 678 | output << " ? "; |
---|
[9857e8d] | 679 | conditionalExpr->get_arg2()->accept( *visitor ); |
---|
[6c4ff37] | 680 | output << " : "; |
---|
[9857e8d] | 681 | conditionalExpr->get_arg3()->accept( *visitor ); |
---|
[6c4ff37] | 682 | output << ")"; |
---|
[51587aa] | 683 | } |
---|
[71f4e4f] | 684 | |
---|
[9857e8d] | 685 | void CodeGenerator::postvisit( CommaExpr * commaExpr ) { |
---|
[e04ef3a] | 686 | extension( commaExpr ); |
---|
[6c4ff37] | 687 | output << "("; |
---|
[8a6cf7e] | 688 | if ( genC ) { |
---|
| 689 | // arg1 of a CommaExpr is never used, so it can be safely cast to void to reduce gcc warnings. |
---|
| 690 | commaExpr->set_arg1( new CastExpr( commaExpr->get_arg1() ) ); |
---|
| 691 | } |
---|
[9857e8d] | 692 | commaExpr->get_arg1()->accept( *visitor ); |
---|
[6c4ff37] | 693 | output << " , "; |
---|
[9857e8d] | 694 | commaExpr->get_arg2()->accept( *visitor ); |
---|
[6c4ff37] | 695 | output << ")"; |
---|
[51587aa] | 696 | } |
---|
[71f4e4f] | 697 | |
---|
[9857e8d] | 698 | void CodeGenerator::postvisit( TupleAssignExpr * tupleExpr ) { |
---|
[d104b02] | 699 | assertf( ! genC, "TupleAssignExpr should not reach code generation." ); |
---|
[9857e8d] | 700 | tupleExpr->stmtExpr->accept( *visitor ); |
---|
[d104b02] | 701 | } |
---|
| 702 | |
---|
[9857e8d] | 703 | void CodeGenerator::postvisit( UntypedTupleExpr * tupleExpr ) { |
---|
[e39241b] | 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 | |
---|
[9857e8d] | 711 | void CodeGenerator::postvisit( TupleExpr * tupleExpr ) { |
---|
[e39241b] | 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 | |
---|
[9857e8d] | 719 | void CodeGenerator::postvisit( TupleIndexExpr * tupleExpr ) { |
---|
[f975c65] | 720 | assertf( ! genC, "TupleIndexExpr should not reach code generation." ); |
---|
| 721 | extension( tupleExpr ); |
---|
[9857e8d] | 722 | tupleExpr->get_tuple()->accept( *visitor ); |
---|
[f975c65] | 723 | output << "." << tupleExpr->get_index(); |
---|
| 724 | } |
---|
| 725 | |
---|
[9857e8d] | 726 | void CodeGenerator::postvisit( 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 | |
---|
[9857e8d] | 734 | void CodeGenerator::postvisit( AsmExpr * asmExpr ) { |
---|
[7f5566b] | 735 | if ( asmExpr->get_inout() ) { |
---|
| 736 | output << "[ "; |
---|
[9857e8d] | 737 | asmExpr->get_inout()->accept( *visitor ); |
---|
[7f5566b] | 738 | output << " ] "; |
---|
| 739 | } // if |
---|
[9857e8d] | 740 | asmExpr->get_constraint()->accept( *visitor ); |
---|
[7f5566b] | 741 | output << " ( "; |
---|
[9857e8d] | 742 | asmExpr->get_operand()->accept( *visitor ); |
---|
[7f5566b] | 743 | output << " )"; |
---|
| 744 | } |
---|
| 745 | |
---|
[9857e8d] | 746 | void CodeGenerator::postvisit( CompoundLiteralExpr *compLitExpr ) { |
---|
[fbcde64] | 747 | assert( compLitExpr->get_result() && dynamic_cast< ListInit * > ( compLitExpr->get_initializer() ) ); |
---|
[e39241b] | 748 | output << "(" << genType( compLitExpr->get_result(), "", pretty, genC ) << ")"; |
---|
[9857e8d] | 749 | compLitExpr->get_initializer()->accept( *visitor ); |
---|
[3c13c03] | 750 | } |
---|
| 751 | |
---|
[9857e8d] | 752 | void CodeGenerator::postvisit( UniqueExpr * unqExpr ) { |
---|
[d104b02] | 753 | assertf( ! genC, "Unique expressions should not reach code generation." ); |
---|
| 754 | output << "unq<" << unqExpr->get_id() << ">{ "; |
---|
[9857e8d] | 755 | unqExpr->get_expr()->accept( *visitor ); |
---|
[d104b02] | 756 | output << " }"; |
---|
| 757 | } |
---|
| 758 | |
---|
[9857e8d] | 759 | void CodeGenerator::postvisit( StmtExpr * stmtExpr ) { |
---|
[3c13c03] | 760 | std::list< Statement * > & stmts = stmtExpr->get_statements()->get_kids(); |
---|
[d22e90f] | 761 | output << "({" << endl; |
---|
[f7cb0bc] | 762 | ++indent; |
---|
[3c13c03] | 763 | unsigned int numStmts = stmts.size(); |
---|
| 764 | unsigned int i = 0; |
---|
| 765 | for ( Statement * stmt : stmts ) { |
---|
[058f549] | 766 | output << indent << printLabels( stmt->get_labels() ); |
---|
[3c13c03] | 767 | if ( i+1 == numStmts ) { |
---|
| 768 | // last statement in a statement expression needs to be handled specially - |
---|
| 769 | // cannot cast to void, otherwise the expression statement has no value |
---|
| 770 | if ( ExprStmt * exprStmt = dynamic_cast< ExprStmt * >( stmt ) ) { |
---|
[9857e8d] | 771 | exprStmt->get_expr()->accept( *visitor ); |
---|
[3c13c03] | 772 | output << ";" << endl; |
---|
| 773 | ++i; |
---|
| 774 | break; |
---|
| 775 | } |
---|
| 776 | } |
---|
[9857e8d] | 777 | stmt->accept( *visitor ); |
---|
[3c13c03] | 778 | output << endl; |
---|
| 779 | if ( wantSpacing( stmt ) ) { |
---|
| 780 | output << endl; |
---|
| 781 | } // if |
---|
| 782 | ++i; |
---|
| 783 | } |
---|
[f7cb0bc] | 784 | --indent; |
---|
[3c13c03] | 785 | output << indent << "})"; |
---|
[6eb8948] | 786 | } |
---|
| 787 | |
---|
[4e8949f] | 788 | void CodeGenerator::postvisit( ConstructorExpr * expr ) { |
---|
| 789 | assertf( ! genC, "Unique expressions should not reach code generation." ); |
---|
| 790 | expr->callExpr->accept( *visitor ); |
---|
| 791 | } |
---|
| 792 | |
---|
[4810867] | 793 | // *** Statements |
---|
[9857e8d] | 794 | void CodeGenerator::postvisit( CompoundStmt * compoundStmt ) { |
---|
[51587aa] | 795 | std::list<Statement*> ks = compoundStmt->get_kids(); |
---|
[2b6c1e0] | 796 | output << "{" << endl; |
---|
[51587aa] | 797 | |
---|
[f7cb0bc] | 798 | ++indent; |
---|
[51587aa] | 799 | |
---|
[7f5566b] | 800 | for ( std::list<Statement *>::iterator i = ks.begin(); i != ks.end(); i++ ) { |
---|
[cda48b6] | 801 | output << indent << printLabels( (*i)->get_labels() ); |
---|
[9857e8d] | 802 | (*i)->accept( *visitor ); |
---|
[2b6c1e0] | 803 | |
---|
[6c4ff37] | 804 | output << endl; |
---|
[2b6c1e0] | 805 | if ( wantSpacing( *i ) ) { |
---|
| 806 | output << endl; |
---|
[3778cb2] | 807 | } // if |
---|
[8688ce1] | 808 | } // for |
---|
[f7cb0bc] | 809 | --indent; |
---|
[51587aa] | 810 | |
---|
[cda48b6] | 811 | output << indent << "}"; |
---|
[51587aa] | 812 | } |
---|
| 813 | |
---|
[9857e8d] | 814 | void CodeGenerator::postvisit( ExprStmt * exprStmt ) { |
---|
[6c4ff37] | 815 | assert( exprStmt ); |
---|
[262f085f] | 816 | if ( genC ) { |
---|
| 817 | // cast the top-level expression to void to reduce gcc warnings. |
---|
[8a6cf7e] | 818 | exprStmt->set_expr( new CastExpr( exprStmt->get_expr() ) ); |
---|
[262f085f] | 819 | } |
---|
[9857e8d] | 820 | exprStmt->get_expr()->accept( *visitor ); |
---|
[321a2481] | 821 | output << ";"; |
---|
[51587aa] | 822 | } |
---|
| 823 | |
---|
[9857e8d] | 824 | void CodeGenerator::postvisit( AsmStmt * asmStmt ) { |
---|
[7f5566b] | 825 | output << "asm "; |
---|
| 826 | if ( asmStmt->get_voltile() ) output << "volatile "; |
---|
| 827 | if ( ! asmStmt->get_gotolabels().empty() ) output << "goto "; |
---|
| 828 | output << "( "; |
---|
[9857e8d] | 829 | if ( asmStmt->get_instruction() ) asmStmt->get_instruction()->accept( *visitor ); |
---|
[7f5566b] | 830 | output << " : "; |
---|
| 831 | genCommaList( asmStmt->get_output().begin(), asmStmt->get_output().end() ); |
---|
| 832 | output << " : "; |
---|
| 833 | genCommaList( asmStmt->get_input().begin(), asmStmt->get_input().end() ); |
---|
| 834 | output << " : "; |
---|
| 835 | genCommaList( asmStmt->get_clobber().begin(), asmStmt->get_clobber().end() ); |
---|
| 836 | if ( ! asmStmt->get_gotolabels().empty() ) { |
---|
| 837 | output << " : "; |
---|
| 838 | for ( std::list<Label>::iterator begin = asmStmt->get_gotolabels().begin();; ) { |
---|
| 839 | output << *begin++; |
---|
| 840 | if ( begin == asmStmt->get_gotolabels().end() ) break; |
---|
| 841 | output << ", "; |
---|
| 842 | } // for |
---|
| 843 | } // if |
---|
| 844 | output << " );" ; |
---|
| 845 | } |
---|
| 846 | |
---|
[9857e8d] | 847 | void CodeGenerator::postvisit( AsmDecl * asmDecl ) { |
---|
[e994912] | 848 | output << "asm "; |
---|
| 849 | AsmStmt * asmStmt = asmDecl->get_stmt(); |
---|
| 850 | output << "( "; |
---|
[9857e8d] | 851 | if ( asmStmt->get_instruction() ) asmStmt->get_instruction()->accept( *visitor ); |
---|
[e994912] | 852 | output << " )" ; |
---|
| 853 | } |
---|
| 854 | |
---|
[9857e8d] | 855 | void CodeGenerator::postvisit( IfStmt * ifStmt ) { |
---|
[7f5566b] | 856 | output << "if ( "; |
---|
[9857e8d] | 857 | ifStmt->get_condition()->accept( *visitor ); |
---|
[7f5566b] | 858 | output << " ) "; |
---|
[51587aa] | 859 | |
---|
[9857e8d] | 860 | ifStmt->get_thenPart()->accept( *visitor ); |
---|
[51587aa] | 861 | |
---|
| 862 | if ( ifStmt->get_elsePart() != 0) { |
---|
[2b6c1e0] | 863 | output << " else "; |
---|
[9857e8d] | 864 | ifStmt->get_elsePart()->accept( *visitor ); |
---|
[51587aa] | 865 | } // if |
---|
| 866 | } |
---|
| 867 | |
---|
[9857e8d] | 868 | void CodeGenerator::postvisit( SwitchStmt * switchStmt ) { |
---|
[7f5566b] | 869 | output << "switch ( " ; |
---|
[9857e8d] | 870 | switchStmt->get_condition()->accept( *visitor ); |
---|
[7f5566b] | 871 | output << " ) "; |
---|
[71f4e4f] | 872 | |
---|
[d22e90f] | 873 | output << "{" << endl; |
---|
[f7cb0bc] | 874 | ++indent; |
---|
[9857e8d] | 875 | acceptAll( switchStmt->get_statements(), *visitor ); |
---|
[f7cb0bc] | 876 | --indent; |
---|
[cda48b6] | 877 | output << indent << "}"; |
---|
[51587aa] | 878 | } |
---|
| 879 | |
---|
[9857e8d] | 880 | void CodeGenerator::postvisit( CaseStmt * caseStmt ) { |
---|
[8bafacc] | 881 | updateLocation( caseStmt ); |
---|
[1dcd9554] | 882 | output << indent; |
---|
[eb3261f] | 883 | if ( caseStmt->isDefault()) { |
---|
[2b6c1e0] | 884 | output << "default"; |
---|
[eb3261f] | 885 | } else { |
---|
[2b6c1e0] | 886 | output << "case "; |
---|
[9857e8d] | 887 | caseStmt->get_condition()->accept( *visitor ); |
---|
[17cd4eb] | 888 | } // if |
---|
[d22e90f] | 889 | output << ":" << endl; |
---|
[71f4e4f] | 890 | |
---|
[51587aa] | 891 | std::list<Statement *> sts = caseStmt->get_statements(); |
---|
| 892 | |
---|
[f7cb0bc] | 893 | ++indent; |
---|
[51587aa] | 894 | for ( std::list<Statement *>::iterator i = sts.begin(); i != sts.end(); i++) { |
---|
[cda48b6] | 895 | output << indent << printLabels( (*i)->get_labels() ) ; |
---|
[9857e8d] | 896 | (*i)->accept( *visitor ); |
---|
[6c4ff37] | 897 | output << endl; |
---|
[3778cb2] | 898 | } // for |
---|
[f7cb0bc] | 899 | --indent; |
---|
[51587aa] | 900 | } |
---|
| 901 | |
---|
[9857e8d] | 902 | void CodeGenerator::postvisit( BranchStmt * branchStmt ) { |
---|
[51587aa] | 903 | switch ( branchStmt->get_type()) { |
---|
| 904 | case BranchStmt::Goto: |
---|
| 905 | if ( ! branchStmt->get_target().empty() ) |
---|
[6c4ff37] | 906 | output << "goto " << branchStmt->get_target(); |
---|
[71f4e4f] | 907 | else { |
---|
[51587aa] | 908 | if ( branchStmt->get_computedTarget() != 0 ) { |
---|
[6c4ff37] | 909 | output << "goto *"; |
---|
[9857e8d] | 910 | branchStmt->get_computedTarget()->accept( *visitor ); |
---|
[51587aa] | 911 | } // if |
---|
| 912 | } // if |
---|
| 913 | break; |
---|
| 914 | case BranchStmt::Break: |
---|
[6c4ff37] | 915 | output << "break"; |
---|
[51587aa] | 916 | break; |
---|
| 917 | case BranchStmt::Continue: |
---|
[6c4ff37] | 918 | output << "continue"; |
---|
[51587aa] | 919 | break; |
---|
[3778cb2] | 920 | } // switch |
---|
[2b6c1e0] | 921 | output << ";"; |
---|
[51587aa] | 922 | } |
---|
| 923 | |
---|
[9857e8d] | 924 | void CodeGenerator::postvisit( ReturnStmt * returnStmt ) { |
---|
[6c4ff37] | 925 | output << "return "; |
---|
[9857e8d] | 926 | maybeAccept( returnStmt->get_expr(), *visitor ); |
---|
[6c4ff37] | 927 | output << ";"; |
---|
[51587aa] | 928 | } |
---|
| 929 | |
---|
[9857e8d] | 930 | void CodeGenerator::postvisit( ThrowStmt * throwStmt ) { |
---|
[daf1af8] | 931 | assertf( ! genC, "Throw statements should not reach code generation." ); |
---|
| 932 | |
---|
| 933 | output << ((throwStmt->get_kind() == ThrowStmt::Terminate) ? |
---|
| 934 | "throw" : "throwResume"); |
---|
| 935 | if (throwStmt->get_expr()) { |
---|
| 936 | output << " "; |
---|
[9857e8d] | 937 | throwStmt->get_expr()->accept( *visitor ); |
---|
[daf1af8] | 938 | } |
---|
| 939 | if (throwStmt->get_target()) { |
---|
| 940 | output << " _At "; |
---|
[9857e8d] | 941 | throwStmt->get_target()->accept( *visitor ); |
---|
[daf1af8] | 942 | } |
---|
| 943 | output << ";"; |
---|
| 944 | } |
---|
[e4ea10b7] | 945 | void CodeGenerator::postvisit( CatchStmt * stmt ) { |
---|
| 946 | assertf( ! genC, "Catch statements should not reach code generation." ); |
---|
| 947 | |
---|
| 948 | output << ((stmt->get_kind() == CatchStmt::Terminate) ? |
---|
| 949 | "catch" : "catchResume"); |
---|
| 950 | output << "( "; |
---|
| 951 | stmt->decl->accept( *visitor ); |
---|
| 952 | output << " ) "; |
---|
| 953 | |
---|
| 954 | if( stmt->cond ) { |
---|
| 955 | output << "if/when(?) ("; |
---|
| 956 | stmt->cond->accept( *visitor ); |
---|
| 957 | output << ") "; |
---|
| 958 | } |
---|
| 959 | stmt->body->accept( *visitor ); |
---|
| 960 | } |
---|
| 961 | |
---|
| 962 | void CodeGenerator::postvisit( WaitForStmt * stmt ) { |
---|
| 963 | assertf( ! genC, "Waitfor statements should not reach code generation." ); |
---|
| 964 | |
---|
| 965 | bool first = true; |
---|
| 966 | for( auto & clause : stmt->clauses ) { |
---|
| 967 | if(first) { output << "or "; first = false; } |
---|
| 968 | if( clause.condition ) { |
---|
| 969 | output << "when("; |
---|
| 970 | stmt->timeout.condition->accept( *visitor ); |
---|
| 971 | output << ") "; |
---|
| 972 | } |
---|
| 973 | output << "waitfor("; |
---|
| 974 | clause.target.function->accept( *visitor ); |
---|
| 975 | for( Expression * expr : clause.target.arguments ) { |
---|
| 976 | output << ","; |
---|
| 977 | expr->accept( *visitor ); |
---|
| 978 | } |
---|
| 979 | output << ") "; |
---|
| 980 | clause.statement->accept( *visitor ); |
---|
| 981 | } |
---|
| 982 | |
---|
| 983 | if( stmt->timeout.statement ) { |
---|
| 984 | output << "or "; |
---|
| 985 | if( stmt->timeout.condition ) { |
---|
| 986 | output << "when("; |
---|
| 987 | stmt->timeout.condition->accept( *visitor ); |
---|
| 988 | output << ") "; |
---|
| 989 | } |
---|
| 990 | output << "timeout("; |
---|
| 991 | stmt->timeout.time->accept( *visitor ); |
---|
| 992 | output << ") "; |
---|
| 993 | stmt->timeout.statement->accept( *visitor ); |
---|
| 994 | } |
---|
| 995 | |
---|
| 996 | if( stmt->orelse.statement ) { |
---|
| 997 | output << "or "; |
---|
| 998 | if( stmt->orelse.condition ) { |
---|
| 999 | output << "when("; |
---|
| 1000 | stmt->orelse.condition->accept( *visitor ); |
---|
| 1001 | output << ")"; |
---|
| 1002 | } |
---|
| 1003 | output << "else "; |
---|
| 1004 | stmt->orelse.statement->accept( *visitor ); |
---|
| 1005 | } |
---|
| 1006 | } |
---|
| 1007 | |
---|
[daf1af8] | 1008 | |
---|
[9857e8d] | 1009 | void CodeGenerator::postvisit( WhileStmt * whileStmt ) { |
---|
[321a2481] | 1010 | if ( whileStmt->get_isDoWhile() ) { |
---|
[6c4ff37] | 1011 | output << "do" ; |
---|
[321a2481] | 1012 | } else { |
---|
[6c4ff37] | 1013 | output << "while (" ; |
---|
[9857e8d] | 1014 | whileStmt->get_condition()->accept( *visitor ); |
---|
[6c4ff37] | 1015 | output << ")"; |
---|
[51587aa] | 1016 | } // if |
---|
[2b6c1e0] | 1017 | output << " "; |
---|
[51587aa] | 1018 | |
---|
[2b6c1e0] | 1019 | output << CodeGenerator::printLabels( whileStmt->get_body()->get_labels() ); |
---|
[9857e8d] | 1020 | whileStmt->get_body()->accept( *visitor ); |
---|
[51587aa] | 1021 | |
---|
[cda48b6] | 1022 | output << indent; |
---|
[51587aa] | 1023 | |
---|
| 1024 | if ( whileStmt->get_isDoWhile() ) { |
---|
[6c4ff37] | 1025 | output << " while (" ; |
---|
[9857e8d] | 1026 | whileStmt->get_condition()->accept( *visitor ); |
---|
[6c4ff37] | 1027 | output << ");"; |
---|
[51587aa] | 1028 | } // if |
---|
| 1029 | } |
---|
| 1030 | |
---|
[9857e8d] | 1031 | void CodeGenerator::postvisit( ForStmt * forStmt ) { |
---|
[8e9cbb2] | 1032 | // initialization is always hoisted, so don't bother doing anything with that |
---|
[145f1fc] | 1033 | output << "for (;"; |
---|
[51587aa] | 1034 | |
---|
[321a2481] | 1035 | if ( forStmt->get_condition() != 0 ) { |
---|
[9857e8d] | 1036 | forStmt->get_condition()->accept( *visitor ); |
---|
[3778cb2] | 1037 | } // if |
---|
[6c4ff37] | 1038 | output << ";"; |
---|
[51587aa] | 1039 | |
---|
[321a2481] | 1040 | if ( forStmt->get_increment() != 0 ) { |
---|
| 1041 | // cast the top-level expression to void to reduce gcc warnings. |
---|
| 1042 | Expression * expr = new CastExpr( forStmt->get_increment() ); |
---|
[9857e8d] | 1043 | expr->accept( *visitor ); |
---|
[3778cb2] | 1044 | } // if |
---|
[2b6c1e0] | 1045 | output << ") "; |
---|
[51587aa] | 1046 | |
---|
| 1047 | if ( forStmt->get_body() != 0 ) { |
---|
[2b6c1e0] | 1048 | output << CodeGenerator::printLabels( forStmt->get_body()->get_labels() ); |
---|
[9857e8d] | 1049 | forStmt->get_body()->accept( *visitor ); |
---|
[51587aa] | 1050 | } // if |
---|
| 1051 | } |
---|
| 1052 | |
---|
[9857e8d] | 1053 | void CodeGenerator::postvisit( __attribute__((unused)) NullStmt * nullStmt ) { |
---|
[cda48b6] | 1054 | //output << indent << CodeGenerator::printLabels( nullStmt->get_labels() ); |
---|
[6c4ff37] | 1055 | output << "/* null statement */ ;"; |
---|
[51587aa] | 1056 | } |
---|
| 1057 | |
---|
[9857e8d] | 1058 | void CodeGenerator::postvisit( DeclStmt * declStmt ) { |
---|
| 1059 | declStmt->get_decl()->accept( *visitor ); |
---|
[71f4e4f] | 1060 | |
---|
[51587aa] | 1061 | if ( doSemicolon( declStmt->get_decl() ) ) { |
---|
[6c4ff37] | 1062 | output << ";"; |
---|
[51587aa] | 1063 | } // if |
---|
| 1064 | } |
---|
| 1065 | |
---|
[9857e8d] | 1066 | void CodeGenerator::postvisit( ImplicitCtorDtorStmt * stmt ) { |
---|
| 1067 | assertf( ! genC, "ImplicitCtorDtorStmts should not reach code generation." ); |
---|
| 1068 | stmt->callStmt->accept( *visitor ); |
---|
| 1069 | } |
---|
| 1070 | |
---|
[dd020c0] | 1071 | void CodeGenerator::handleStorageClass( DeclarationWithType * decl ) { |
---|
[fb04321] | 1072 | if ( decl->get_storageClasses().any() ) { |
---|
[6e8bd43] | 1073 | decl->get_storageClasses().print( output ); |
---|
[a7c90d4] | 1074 | } // if |
---|
[dd020c0] | 1075 | } // CodeGenerator::handleStorageClass |
---|
[9facf3b] | 1076 | |
---|
| 1077 | std::string genName( DeclarationWithType * decl ) { |
---|
| 1078 | CodeGen::OperatorInfo opInfo; |
---|
| 1079 | if ( operatorLookup( decl->get_name(), opInfo ) ) { |
---|
| 1080 | return opInfo.outputName; |
---|
| 1081 | } else { |
---|
| 1082 | return decl->get_name(); |
---|
| 1083 | } // if |
---|
| 1084 | } |
---|
[51b7345] | 1085 | } // namespace CodeGen |
---|
[51587aa] | 1086 | |
---|
[e149f77] | 1087 | std::ostream & operator<<( std::ostream & out, const BaseSyntaxNode * node ) { |
---|
| 1088 | if ( node ) { |
---|
| 1089 | node->print( out ); |
---|
| 1090 | } else { |
---|
| 1091 | out << "nullptr"; |
---|
| 1092 | } |
---|
| 1093 | return out; |
---|
| 1094 | } |
---|
| 1095 | |
---|
[51587aa] | 1096 | // Local Variables: // |
---|
| 1097 | // tab-width: 4 // |
---|
| 1098 | // mode: c++ // |
---|
| 1099 | // compile-command: "make install" // |
---|
| 1100 | // End: // |
---|