[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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[d7312ac] | 12 | // Last Modified On : Sat May 5 09:08:32 2018 |
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| 13 | // Update Count : 494 |
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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/UniqueName.h" // for UniqueName |
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| 21 | #include "Common/utility.h" // for CodeLocation, toString |
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| 22 | #include "GenType.h" // for genType |
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| 23 | #include "InitTweak/InitTweak.h" // for getPointerBase |
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| 24 | #include "OperatorTable.h" // for OperatorInfo, operatorLookup |
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| 25 | #include "Parser/LinkageSpec.h" // for Spec, Intrinsic |
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| 26 | #include "SynTree/Attribute.h" // for Attribute |
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| 27 | #include "SynTree/BaseSyntaxNode.h" // for BaseSyntaxNode |
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| 28 | #include "SynTree/Constant.h" // for Constant |
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| 29 | #include "SynTree/Declaration.h" // for DeclarationWithType, TypeDecl |
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| 30 | #include "SynTree/Expression.h" // for Expression, UntypedExpr, Applica... |
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| 31 | #include "SynTree/Initializer.h" // for Initializer, ListInit, Designation |
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| 32 | #include "SynTree/Label.h" // for Label, operator<< |
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| 33 | #include "SynTree/Statement.h" // for Statement, AsmStmt, BranchStmt |
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| 34 | #include "SynTree/Type.h" // for Type, Type::StorageClasses, Func... |
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[10a7775] | 35 | |
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[51b7345] | 36 | using namespace std; |
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| 37 | |
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| 38 | namespace CodeGen { |
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[6c4ff37] | 39 | int CodeGenerator::tabsize = 4; |
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[51587aa] | 40 | |
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[145f1fc] | 41 | // the kinds of statements that would ideally be followed by whitespace |
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[2b6c1e0] | 42 | bool wantSpacing( Statement * stmt) { |
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| 43 | return dynamic_cast< IfStmt * >( stmt ) || dynamic_cast< CompoundStmt * >( stmt ) || |
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[08061589] | 44 | dynamic_cast< WhileStmt * >( stmt ) || dynamic_cast< ForStmt * >( stmt ) || dynamic_cast< SwitchStmt *>( stmt ); |
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[2b6c1e0] | 45 | } |
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| 46 | |
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[8688ce1] | 47 | void CodeGenerator::extension( Expression * expr ) { |
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[8e9cbb2] | 48 | if ( expr->get_extension() ) { |
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| 49 | output << "__extension__ "; |
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| 50 | } // if |
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| 51 | } // extension |
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| 52 | |
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[8688ce1] | 53 | void CodeGenerator::extension( Declaration * decl ) { |
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[8e9cbb2] | 54 | if ( decl->get_extension() ) { |
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| 55 | output << "__extension__ "; |
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| 56 | } // if |
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| 57 | } // extension |
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| 58 | |
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[58dd019] | 59 | void CodeGenerator::asmName( DeclarationWithType * decl ) { |
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[e612146c] | 60 | if ( ConstantExpr * asmName = dynamic_cast<ConstantExpr *>(decl->get_asmName()) ) { |
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[58dd019] | 61 | output << " asm ( " << asmName->get_constant()->get_value() << " )"; |
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| 62 | } // if |
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| 63 | } // extension |
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| 64 | |
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[888cbe4] | 65 | CodeGenerator::LabelPrinter & CodeGenerator::LabelPrinter::operator()( std::list< Label > & l ) { |
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| 66 | labels = &l; |
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| 67 | return *this; |
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| 68 | } |
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| 69 | |
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[8688ce1] | 70 | ostream & operator<<( ostream & output, CodeGenerator::LabelPrinter & printLabels ) { |
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[888cbe4] | 71 | std::list< Label > & labs = *printLabels.labels; |
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| 72 | // l.unique(); // assumes a sorted list. Why not use set? Does order matter? |
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| 73 | for ( Label & l : labs ) { |
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| 74 | output << l.get_name() + ": "; |
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| 75 | printLabels.cg.genAttributes( l.get_attributes() ); |
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[8688ce1] | 76 | } // for |
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[888cbe4] | 77 | return output; |
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| 78 | } |
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| 79 | |
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[d22e90f] | 80 | /* Using updateLocation at the beginning of a node and endl |
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[8bafacc] | 81 | * within a node should become the method of formating. |
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| 82 | */ |
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| 83 | void CodeGenerator::updateLocation( CodeLocation const & to ) { |
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[d22e90f] | 84 | // skip if linemarks shouldn't appear or if codelocation is unset |
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| 85 | if ( !lineMarks || to.isUnset() ) return; |
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| 86 | |
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| 87 | if ( currentLocation.followedBy( to, 0 ) ) { |
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[8bafacc] | 88 | return; |
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| 89 | } else if ( currentLocation.followedBy( to, 1 ) ) { |
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| 90 | output << "\n" << indent; |
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[d48e529] | 91 | currentLocation.first_line += 1; |
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[8bafacc] | 92 | } else if ( currentLocation.followedBy( to, 2 ) ) { |
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| 93 | output << "\n\n" << indent; |
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[d48e529] | 94 | currentLocation.first_line += 2; |
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[8bafacc] | 95 | } else { |
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[d48e529] | 96 | output << "\n# " << to.first_line << " \"" << to.filename |
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[8bafacc] | 97 | << "\"\n" << indent; |
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| 98 | currentLocation = to; |
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| 99 | } |
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| 100 | output << std::flush; |
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| 101 | } |
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[c850687] | 102 | |
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[8bafacc] | 103 | void CodeGenerator::updateLocation( BaseSyntaxNode const * to ) { |
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| 104 | updateLocation( to->location ); |
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[c850687] | 105 | } |
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| 106 | |
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[d22e90f] | 107 | // replace endl |
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| 108 | ostream & CodeGenerator::LineEnder::operator()( ostream & os ) const { |
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| 109 | // if ( !cg.lineMarks ) { |
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| 110 | // os << "\n" << cg.indent << std::flush; |
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| 111 | // } |
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| 112 | os << "\n" << std::flush; |
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| 113 | cg.currentLocation.first_line++; |
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| 114 | // os << "/* did endl; current loc is: " << cg.currentLocation.first_line << "*/"; |
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| 115 | return os; |
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[c850687] | 116 | } |
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| 117 | |
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[5f08961d] | 118 | CodeGenerator::CodeGenerator( std::ostream & os, bool pretty, bool genC, bool lineMarks, bool printExprTypes ) : indent( CodeGenerator::tabsize ), output( os ), printLabels( *this ), pretty( pretty ), genC( genC ), lineMarks( lineMarks ), printExprTypes( printExprTypes ), endl( *this ) {} |
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[cda48b6] | 119 | |
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[486341f] | 120 | string CodeGenerator::mangleName( DeclarationWithType * decl ) { |
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[13073be] | 121 | // GCC builtins should always be printed unmangled |
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| 122 | if ( pretty || decl->linkage.is_gcc_builtin ) return decl->name; |
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| 123 | if ( decl->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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[13073be] | 127 | return decl->name; |
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[51587aa] | 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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[5f08961d] | 162 | // *** Expression |
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| 163 | void CodeGenerator::previsit( Expression * node ) { |
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| 164 | previsit( (BaseSyntaxNode *)node ); |
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| 165 | GuardAction( [this, node](){ |
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| 166 | if ( printExprTypes ) { |
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| 167 | output << " /* " << genType( node->result, "", pretty, genC ) << " */ "; |
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| 168 | } |
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| 169 | } ); |
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| 170 | } |
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| 171 | |
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[4810867] | 172 | // *** Declarations |
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[9857e8d] | 173 | void CodeGenerator::postvisit( FunctionDecl * functionDecl ) { |
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[8e9cbb2] | 174 | extension( functionDecl ); |
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[7baed7d] | 175 | genAttributes( functionDecl->get_attributes() ); |
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| 176 | |
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[51587aa] | 177 | handleStorageClass( functionDecl ); |
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[6e8bd43] | 178 | functionDecl->get_funcSpec().print( output ); |
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[dd020c0] | 179 | |
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[e39241b] | 180 | output << genType( functionDecl->get_functionType(), mangleName( functionDecl ), pretty, genC ); |
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[51587aa] | 181 | |
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[58dd019] | 182 | asmName( functionDecl ); |
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| 183 | |
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[51587aa] | 184 | if ( functionDecl->get_statements() ) { |
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[9857e8d] | 185 | functionDecl->get_statements()->accept( *visitor ); |
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[51587aa] | 186 | } // if |
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| 187 | } |
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| 188 | |
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[9857e8d] | 189 | void CodeGenerator::postvisit( ObjectDecl * objectDecl ) { |
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[e39241b] | 190 | if (objectDecl->get_name().empty() && genC ) { |
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| 191 | // only generate an anonymous name when generating C code, otherwise it clutters the output too much |
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[d9c8a59] | 192 | static UniqueName name = { "__anonymous_object" }; |
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| 193 | objectDecl->set_name( name.newName() ); |
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| 194 | } |
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| 195 | |
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[8e9cbb2] | 196 | extension( objectDecl ); |
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[f9cebb5] | 197 | genAttributes( objectDecl->get_attributes() ); |
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| 198 | |
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[51587aa] | 199 | handleStorageClass( objectDecl ); |
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[e39241b] | 200 | output << genType( objectDecl->get_type(), mangleName( objectDecl ), pretty, genC ); |
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[71f4e4f] | 201 | |
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[58dd019] | 202 | asmName( objectDecl ); |
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| 203 | |
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[51587aa] | 204 | if ( objectDecl->get_init() ) { |
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[6c4ff37] | 205 | output << " = "; |
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[9857e8d] | 206 | objectDecl->get_init()->accept( *visitor ); |
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[51587aa] | 207 | } // if |
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[3778cb2] | 208 | |
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[51587aa] | 209 | if ( objectDecl->get_bitfieldWidth() ) { |
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[6c4ff37] | 210 | output << ":"; |
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[9857e8d] | 211 | objectDecl->get_bitfieldWidth()->accept( *visitor ); |
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[51587aa] | 212 | } // if |
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| 213 | } |
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| 214 | |
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[5f642e38] | 215 | void CodeGenerator::handleAggregate( AggregateDecl * aggDecl, const std::string & kind ) { |
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[e39241b] | 216 | if( ! aggDecl->get_parameters().empty() && ! genC ) { |
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| 217 | // assertf( ! genC, "Aggregate type parameters should not reach code generation." ); |
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| 218 | output << "forall("; |
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| 219 | genCommaList( aggDecl->get_parameters().begin(), aggDecl->get_parameters().end() ); |
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| 220 | output << ")" << endl; |
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[e6cee92] | 221 | output << indent; |
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[e39241b] | 222 | } |
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| 223 | |
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[593370c] | 224 | output << kind; |
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| 225 | genAttributes( aggDecl->get_attributes() ); |
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| 226 | output << aggDecl->get_name(); |
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[71f4e4f] | 227 | |
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[2c57025] | 228 | if ( aggDecl->has_body() ) { |
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| 229 | std::list< Declaration * > & memb = aggDecl->get_members(); |
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[94b4364] | 230 | output << " {" << endl; |
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[51587aa] | 231 | |
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[f7cb0bc] | 232 | ++indent; |
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[3778cb2] | 233 | for ( std::list< Declaration* >::iterator i = memb.begin(); i != memb.end(); i++ ) { |
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[87e08e24] | 234 | output << indent; |
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[9857e8d] | 235 | (*i)->accept( *visitor ); |
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[6c4ff37] | 236 | output << ";" << endl; |
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[3778cb2] | 237 | } // for |
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[51587aa] | 238 | |
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[f7cb0bc] | 239 | --indent; |
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[51587aa] | 240 | |
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[cda48b6] | 241 | output << indent << "}"; |
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[17cd4eb] | 242 | } // if |
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[51587aa] | 243 | } |
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[17cd4eb] | 244 | |
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[9857e8d] | 245 | void CodeGenerator::postvisit( StructDecl * structDecl ) { |
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[8e9cbb2] | 246 | extension( structDecl ); |
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[5f642e38] | 247 | handleAggregate( structDecl, "struct " ); |
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[51587aa] | 248 | } |
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[17cd4eb] | 249 | |
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[9857e8d] | 250 | void CodeGenerator::postvisit( UnionDecl * unionDecl ) { |
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[8e9cbb2] | 251 | extension( unionDecl ); |
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[5f642e38] | 252 | handleAggregate( unionDecl, "union " ); |
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[51587aa] | 253 | } |
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[71f4e4f] | 254 | |
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[9857e8d] | 255 | void CodeGenerator::postvisit( EnumDecl * enumDecl ) { |
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[8e9cbb2] | 256 | extension( enumDecl ); |
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[6c4ff37] | 257 | output << "enum "; |
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[c0aa336] | 258 | genAttributes( enumDecl->get_attributes() ); |
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[51587aa] | 259 | |
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[a984e65] | 260 | output << enumDecl->get_name(); |
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[71f4e4f] | 261 | |
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[8e9cbb2] | 262 | std::list< Declaration* > &memb = enumDecl->get_members(); |
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[51587aa] | 263 | |
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| 264 | if ( ! memb.empty() ) { |
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[cda48b6] | 265 | output << " {" << endl; |
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[51587aa] | 266 | |
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[f7cb0bc] | 267 | ++indent; |
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[51587aa] | 268 | for ( std::list< Declaration* >::iterator i = memb.begin(); i != memb.end(); i++) { |
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[8688ce1] | 269 | ObjectDecl * obj = dynamic_cast< ObjectDecl* >( *i ); |
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[51587aa] | 270 | assert( obj ); |
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[87e08e24] | 271 | output << indent << mangleName( obj ); |
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[51587aa] | 272 | if ( obj->get_init() ) { |
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[6c4ff37] | 273 | output << " = "; |
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[9857e8d] | 274 | obj->get_init()->accept( *visitor ); |
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[51587aa] | 275 | } // if |
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[6c4ff37] | 276 | output << "," << endl; |
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[51587aa] | 277 | } // for |
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| 278 | |
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[f7cb0bc] | 279 | --indent; |
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[51587aa] | 280 | |
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[cda48b6] | 281 | output << indent << "}"; |
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[51587aa] | 282 | } // if |
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| 283 | } |
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[71f4e4f] | 284 | |
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[9857e8d] | 285 | void CodeGenerator::postvisit( TraitDecl * traitDecl ) { |
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[a0c7dc36] | 286 | assertf( ! genC, "TraitDecls should not reach code generation." ); |
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[a984e65] | 287 | extension( traitDecl ); |
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| 288 | handleAggregate( traitDecl, "trait " ); |
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| 289 | } |
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[71f4e4f] | 290 | |
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[9857e8d] | 291 | void CodeGenerator::postvisit( TypedefDecl * typeDecl ) { |
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[e39241b] | 292 | assertf( ! genC, "Typedefs are removed and substituted in earlier passes." ); |
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| 293 | output << "typedef "; |
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| 294 | output << genType( typeDecl->get_base(), typeDecl->get_name(), pretty, genC ) << endl; |
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[51587aa] | 295 | } |
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[71f4e4f] | 296 | |
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[9857e8d] | 297 | void CodeGenerator::postvisit( TypeDecl * typeDecl ) { |
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[a0c7dc36] | 298 | assertf( ! genC, "TypeDecls should not reach code generation." ); |
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[ab4bff5] | 299 | output << typeDecl->genTypeString() << " " << typeDecl->name; |
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[f0ecf9b] | 300 | if ( typeDecl->sized ) { |
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[ab4bff5] | 301 | output << " | sized(" << typeDecl->name << ")"; |
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[a0c7dc36] | 302 | } |
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[ab4bff5] | 303 | if ( ! typeDecl->assertions.empty() ) { |
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[a0c7dc36] | 304 | output << " | { "; |
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[ab4bff5] | 305 | for ( DeclarationWithType * assert : typeDecl->assertions ) { |
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| 306 | assert->accept( *visitor ); |
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| 307 | output << "; "; |
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| 308 | } |
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[a0c7dc36] | 309 | output << " }"; |
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[e39241b] | 310 | } |
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[51587aa] | 311 | } |
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| 312 | |
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[92fea32] | 313 | void CodeGenerator::postvisit( StaticAssertDecl * assertDecl ) { |
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| 314 | output << "_Static_assert("; |
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| 315 | assertDecl->condition->accept( *visitor ); |
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| 316 | output << ", "; |
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| 317 | assertDecl->message->accept( *visitor ); |
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| 318 | output << ")"; |
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| 319 | } |
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| 320 | |
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[9857e8d] | 321 | void CodeGenerator::postvisit( Designation * designation ) { |
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[e4d829b] | 322 | std::list< Expression * > designators = designation->get_designators(); |
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[e45215c] | 323 | if ( designators.size() == 0 ) return; |
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[e4d829b] | 324 | for ( Expression * des : designators ) { |
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[62423350] | 325 | if ( dynamic_cast< NameExpr * >( des ) || dynamic_cast< VariableExpr * >( des ) ) { |
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| 326 | // if expression is a NameExpr or VariableExpr, then initializing aggregate member |
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| 327 | output << "."; |
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[9857e8d] | 328 | des->accept( *visitor ); |
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[e4d829b] | 329 | } else { |
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[62423350] | 330 | // otherwise, it has to be a ConstantExpr or CastExpr, initializing array eleemnt |
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| 331 | output << "["; |
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[9857e8d] | 332 | des->accept( *visitor ); |
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[62423350] | 333 | output << "]"; |
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[3778cb2] | 334 | } // if |
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| 335 | } // for |
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[e45215c] | 336 | output << " = "; |
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| 337 | } |
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| 338 | |
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[9857e8d] | 339 | void CodeGenerator::postvisit( SingleInit * init ) { |
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| 340 | init->get_value()->accept( *visitor ); |
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[51587aa] | 341 | } |
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| 342 | |
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[9857e8d] | 343 | void CodeGenerator::postvisit( ListInit * init ) { |
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[e4d829b] | 344 | auto initBegin = init->begin(); |
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| 345 | auto initEnd = init->end(); |
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| 346 | auto desigBegin = init->get_designations().begin(); |
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| 347 | auto desigEnd = init->get_designations().end(); |
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| 348 | |
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[6c4ff37] | 349 | output << "{ "; |
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[e4d829b] | 350 | for ( ; initBegin != initEnd && desigBegin != desigEnd; ) { |
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[9857e8d] | 351 | (*desigBegin)->accept( *visitor ); |
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| 352 | (*initBegin)->accept( *visitor ); |
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[e4d829b] | 353 | ++initBegin, ++desigBegin; |
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| 354 | if ( initBegin != initEnd ) { |
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| 355 | output << ", "; |
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| 356 | } |
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| 357 | } |
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[6c4ff37] | 358 | output << " }"; |
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[e4d829b] | 359 | assertf( initBegin == initEnd && desigBegin == desigEnd, "Initializers and designators not the same length. %s", toString( init ).c_str() ); |
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[51587aa] | 360 | } |
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| 361 | |
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[d22e90f] | 362 | void CodeGenerator::postvisit( ConstructorInit * init ){ |
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[e39241b] | 363 | assertf( ! genC, "ConstructorInit nodes should not reach code generation." ); |
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[e6cee92] | 364 | // pseudo-output for constructor/destructor pairs |
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[d22e90f] | 365 | output << "<ctorinit>{" << endl << ++indent << "ctor: "; |
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[9857e8d] | 366 | maybeAccept( init->get_ctor(), *visitor ); |
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[d22e90f] | 367 | output << ", " << endl << indent << "dtor: "; |
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[9857e8d] | 368 | maybeAccept( init->get_dtor(), *visitor ); |
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[d22e90f] | 369 | output << endl << --indent << "}"; |
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[fc638d2] | 370 | } |
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| 371 | |
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[9857e8d] | 372 | void CodeGenerator::postvisit( Constant * constant ) { |
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[d7312ac] | 373 | output << constant->get_value(); |
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[51587aa] | 374 | } |
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| 375 | |
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[4810867] | 376 | // *** Expressions |
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[9857e8d] | 377 | void CodeGenerator::postvisit( ApplicationExpr * applicationExpr ) { |
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[e04ef3a] | 378 | extension( applicationExpr ); |
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[8688ce1] | 379 | if ( VariableExpr * varExpr = dynamic_cast< VariableExpr* >( applicationExpr->get_function() ) ) { |
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[51587aa] | 380 | OperatorInfo opInfo; |
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| 381 | if ( varExpr->get_var()->get_linkage() == LinkageSpec::Intrinsic && operatorLookup( varExpr->get_var()->get_name(), opInfo ) ) { |
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| 382 | std::list< Expression* >::iterator arg = applicationExpr->get_args().begin(); |
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| 383 | switch ( opInfo.type ) { |
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| 384 | case OT_INDEX: |
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| 385 | assert( applicationExpr->get_args().size() == 2 ); |
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[9857e8d] | 386 | (*arg++)->accept( *visitor ); |
---|
[6c4ff37] | 387 | output << "["; |
---|
[9857e8d] | 388 | (*arg)->accept( *visitor ); |
---|
[6c4ff37] | 389 | output << "]"; |
---|
[51587aa] | 390 | break; |
---|
[71f4e4f] | 391 | |
---|
[51587aa] | 392 | case OT_CALL: |
---|
[356189a] | 393 | // there are no intrinsic definitions of the function call operator |
---|
[51587aa] | 394 | assert( false ); |
---|
| 395 | break; |
---|
[71f4e4f] | 396 | |
---|
[f1e012b] | 397 | case OT_CTOR: |
---|
[c2ce2350] | 398 | case OT_DTOR: |
---|
[356189a] | 399 | if ( applicationExpr->get_args().size() == 1 ) { |
---|
[8e9cbb2] | 400 | // the expression fed into a single parameter constructor or destructor may contain side |
---|
| 401 | // effects, so must still output this expression |
---|
[64071c2] | 402 | output << "("; |
---|
[9857e8d] | 403 | (*arg++)->accept( *visitor ); |
---|
[64071c2] | 404 | output << ") /* " << opInfo.inputName << " */"; |
---|
[356189a] | 405 | } else if ( applicationExpr->get_args().size() == 2 ) { |
---|
[c2ce2350] | 406 | // intrinsic two parameter constructors are essentially bitwise assignment |
---|
[356189a] | 407 | output << "("; |
---|
[9857e8d] | 408 | (*arg++)->accept( *visitor ); |
---|
[356189a] | 409 | output << opInfo.symbol; |
---|
[9857e8d] | 410 | (*arg)->accept( *visitor ); |
---|
[c2ce2350] | 411 | output << ") /* " << opInfo.inputName << " */"; |
---|
[356189a] | 412 | } else { |
---|
[c2ce2350] | 413 | // no constructors with 0 or more than 2 parameters |
---|
[356189a] | 414 | assert( false ); |
---|
[8688ce1] | 415 | } // if |
---|
[356189a] | 416 | break; |
---|
[f1e012b] | 417 | |
---|
[51587aa] | 418 | case OT_PREFIX: |
---|
| 419 | case OT_PREFIXASSIGN: |
---|
| 420 | assert( applicationExpr->get_args().size() == 1 ); |
---|
[6c4ff37] | 421 | output << "("; |
---|
| 422 | output << opInfo.symbol; |
---|
[9857e8d] | 423 | (*arg)->accept( *visitor ); |
---|
[6c4ff37] | 424 | output << ")"; |
---|
[51587aa] | 425 | break; |
---|
[71f4e4f] | 426 | |
---|
[51587aa] | 427 | case OT_POSTFIX: |
---|
| 428 | case OT_POSTFIXASSIGN: |
---|
| 429 | assert( applicationExpr->get_args().size() == 1 ); |
---|
[9857e8d] | 430 | (*arg)->accept( *visitor ); |
---|
[6c4ff37] | 431 | output << opInfo.symbol; |
---|
[51587aa] | 432 | break; |
---|
| 433 | |
---|
[f1e012b] | 434 | |
---|
[51587aa] | 435 | case OT_INFIX: |
---|
| 436 | case OT_INFIXASSIGN: |
---|
| 437 | assert( applicationExpr->get_args().size() == 2 ); |
---|
[6c4ff37] | 438 | output << "("; |
---|
[9857e8d] | 439 | (*arg++)->accept( *visitor ); |
---|
[6c4ff37] | 440 | output << opInfo.symbol; |
---|
[9857e8d] | 441 | (*arg)->accept( *visitor ); |
---|
[6c4ff37] | 442 | output << ")"; |
---|
[51587aa] | 443 | break; |
---|
[71f4e4f] | 444 | |
---|
[51587aa] | 445 | case OT_CONSTANT: |
---|
[721f17a] | 446 | case OT_LABELADDRESS: |
---|
| 447 | // there are no intrinsic definitions of 0/1 or label addresses as functions |
---|
[51587aa] | 448 | assert( false ); |
---|
[3778cb2] | 449 | } // switch |
---|
[17cd4eb] | 450 | } else { |
---|
[9857e8d] | 451 | varExpr->accept( *visitor ); |
---|
[6c4ff37] | 452 | output << "("; |
---|
[51587aa] | 453 | genCommaList( applicationExpr->get_args().begin(), applicationExpr->get_args().end() ); |
---|
[6c4ff37] | 454 | output << ")"; |
---|
[17cd4eb] | 455 | } // if |
---|
[51587aa] | 456 | } else { |
---|
[9857e8d] | 457 | applicationExpr->get_function()->accept( *visitor ); |
---|
[6c4ff37] | 458 | output << "("; |
---|
[51587aa] | 459 | genCommaList( applicationExpr->get_args().begin(), applicationExpr->get_args().end() ); |
---|
[6c4ff37] | 460 | output << ")"; |
---|
[51587aa] | 461 | } // if |
---|
| 462 | } |
---|
[71f4e4f] | 463 | |
---|
[9857e8d] | 464 | void CodeGenerator::postvisit( UntypedExpr * untypedExpr ) { |
---|
[e04ef3a] | 465 | extension( untypedExpr ); |
---|
[22bc276] | 466 | if ( NameExpr * nameExpr = dynamic_cast< NameExpr* >( untypedExpr->function ) ) { |
---|
[51587aa] | 467 | OperatorInfo opInfo; |
---|
[22bc276] | 468 | if ( operatorLookup( nameExpr->name, opInfo ) ) { |
---|
| 469 | std::list< Expression* >::iterator arg = untypedExpr->args.begin(); |
---|
[51587aa] | 470 | switch ( opInfo.type ) { |
---|
| 471 | case OT_INDEX: |
---|
[22bc276] | 472 | assert( untypedExpr->args.size() == 2 ); |
---|
[9857e8d] | 473 | (*arg++)->accept( *visitor ); |
---|
[6c4ff37] | 474 | output << "["; |
---|
[9857e8d] | 475 | (*arg)->accept( *visitor ); |
---|
[6c4ff37] | 476 | output << "]"; |
---|
[51587aa] | 477 | break; |
---|
[71f4e4f] | 478 | |
---|
[51587aa] | 479 | case OT_CALL: |
---|
[f1e012b] | 480 | assert( false ); |
---|
| 481 | |
---|
[c2ce2350] | 482 | case OT_CTOR: |
---|
| 483 | case OT_DTOR: |
---|
[22bc276] | 484 | if ( untypedExpr->args.size() == 1 ) { |
---|
[8e9cbb2] | 485 | // the expression fed into a single parameter constructor or destructor may contain side |
---|
| 486 | // effects, so must still output this expression |
---|
[64071c2] | 487 | output << "("; |
---|
[9857e8d] | 488 | (*arg++)->accept( *visitor ); |
---|
[64071c2] | 489 | output << ") /* " << opInfo.inputName << " */"; |
---|
[c2ce2350] | 490 | } else if ( untypedExpr->get_args().size() == 2 ) { |
---|
| 491 | // intrinsic two parameter constructors are essentially bitwise assignment |
---|
| 492 | output << "("; |
---|
[9857e8d] | 493 | (*arg++)->accept( *visitor ); |
---|
[c2ce2350] | 494 | output << opInfo.symbol; |
---|
[9857e8d] | 495 | (*arg)->accept( *visitor ); |
---|
[c2ce2350] | 496 | output << ") /* " << opInfo.inputName << " */"; |
---|
| 497 | } else { |
---|
| 498 | // no constructors with 0 or more than 2 parameters |
---|
[4e8949f] | 499 | assertf( ! genC, "UntypedExpr constructor/destructor with 0 or more than 2 parameters." ); |
---|
| 500 | output << "("; |
---|
| 501 | (*arg++)->accept( *visitor ); |
---|
| 502 | output << opInfo.symbol << "{ "; |
---|
[22bc276] | 503 | genCommaList( arg, untypedExpr->args.end() ); |
---|
[4e8949f] | 504 | output << "}) /* " << opInfo.inputName << " */"; |
---|
[3778cb2] | 505 | } // if |
---|
[51587aa] | 506 | break; |
---|
[71f4e4f] | 507 | |
---|
[51587aa] | 508 | case OT_PREFIX: |
---|
| 509 | case OT_PREFIXASSIGN: |
---|
[de62360d] | 510 | case OT_LABELADDRESS: |
---|
[22bc276] | 511 | assert( untypedExpr->args.size() == 1 ); |
---|
[6c4ff37] | 512 | output << "("; |
---|
| 513 | output << opInfo.symbol; |
---|
[9857e8d] | 514 | (*arg)->accept( *visitor ); |
---|
[6c4ff37] | 515 | output << ")"; |
---|
[51587aa] | 516 | break; |
---|
[71f4e4f] | 517 | |
---|
[51587aa] | 518 | case OT_POSTFIX: |
---|
| 519 | case OT_POSTFIXASSIGN: |
---|
[22bc276] | 520 | assert( untypedExpr->args.size() == 1 ); |
---|
[9857e8d] | 521 | (*arg)->accept( *visitor ); |
---|
[6c4ff37] | 522 | output << opInfo.symbol; |
---|
[51587aa] | 523 | break; |
---|
[71f4e4f] | 524 | |
---|
[51587aa] | 525 | case OT_INFIX: |
---|
| 526 | case OT_INFIXASSIGN: |
---|
[22bc276] | 527 | assert( untypedExpr->args.size() == 2 ); |
---|
[6c4ff37] | 528 | output << "("; |
---|
[9857e8d] | 529 | (*arg++)->accept( *visitor ); |
---|
[6c4ff37] | 530 | output << opInfo.symbol; |
---|
[9857e8d] | 531 | (*arg)->accept( *visitor ); |
---|
[6c4ff37] | 532 | output << ")"; |
---|
[51587aa] | 533 | break; |
---|
[71f4e4f] | 534 | |
---|
[51587aa] | 535 | case OT_CONSTANT: |
---|
| 536 | // there are no intrinsic definitions of 0 or 1 as functions |
---|
| 537 | assert( false ); |
---|
[3778cb2] | 538 | } // switch |
---|
[51587aa] | 539 | } else { |
---|
[22bc276] | 540 | // builtin routines |
---|
| 541 | nameExpr->accept( *visitor ); |
---|
| 542 | output << "("; |
---|
| 543 | genCommaList( untypedExpr->args.begin(), untypedExpr->args.end() ); |
---|
| 544 | output << ")"; |
---|
[51587aa] | 545 | } // if |
---|
| 546 | } else { |
---|
[22bc276] | 547 | untypedExpr->function->accept( *visitor ); |
---|
[6c4ff37] | 548 | output << "("; |
---|
[22bc276] | 549 | genCommaList( untypedExpr->args.begin(), untypedExpr->args.end() ); |
---|
[6c4ff37] | 550 | output << ")"; |
---|
[51587aa] | 551 | } // if |
---|
| 552 | } |
---|
[71f4e4f] | 553 | |
---|
[9857e8d] | 554 | void CodeGenerator::postvisit( RangeExpr * rangeExpr ) { |
---|
[22bc276] | 555 | rangeExpr->low->accept( *visitor ); |
---|
[064e3ff] | 556 | output << " ... "; |
---|
[22bc276] | 557 | rangeExpr->high->accept( *visitor ); |
---|
[064e3ff] | 558 | } |
---|
| 559 | |
---|
[9857e8d] | 560 | void CodeGenerator::postvisit( NameExpr * nameExpr ) { |
---|
[e04ef3a] | 561 | extension( nameExpr ); |
---|
[51587aa] | 562 | OperatorInfo opInfo; |
---|
[5ea7a22] | 563 | if ( operatorLookup( nameExpr->name, opInfo ) ) { |
---|
| 564 | if ( opInfo.type == OT_CONSTANT ) { |
---|
| 565 | output << opInfo.symbol; |
---|
| 566 | } else { |
---|
| 567 | output << opInfo.outputName; |
---|
| 568 | } |
---|
[51587aa] | 569 | } else { |
---|
[6c4ff37] | 570 | output << nameExpr->get_name(); |
---|
[51587aa] | 571 | } // if |
---|
| 572 | } |
---|
[71f4e4f] | 573 | |
---|
[9857e8d] | 574 | void CodeGenerator::postvisit( AddressExpr * addressExpr ) { |
---|
[e04ef3a] | 575 | extension( addressExpr ); |
---|
[6c4ff37] | 576 | output << "(&"; |
---|
[9857e8d] | 577 | addressExpr->arg->accept( *visitor ); |
---|
[6c4ff37] | 578 | output << ")"; |
---|
[51587aa] | 579 | } |
---|
| 580 | |
---|
[9857e8d] | 581 | void CodeGenerator::postvisit( LabelAddressExpr *addressExpr ) { |
---|
[5809461] | 582 | extension( addressExpr ); |
---|
| 583 | output << "(&&" << addressExpr->arg << ")"; |
---|
| 584 | } |
---|
| 585 | |
---|
[9857e8d] | 586 | void CodeGenerator::postvisit( CastExpr * castExpr ) { |
---|
[e04ef3a] | 587 | extension( castExpr ); |
---|
[803deb1] | 588 | output << "("; |
---|
[906e24d] | 589 | if ( castExpr->get_result()->isVoid() ) { |
---|
[d7312ac] | 590 | output << "(void)"; |
---|
[d104b02] | 591 | } else { |
---|
| 592 | // at least one result type of cast. |
---|
| 593 | // Note: previously, lvalue casts were skipped. Since it's now impossible for the user to write |
---|
| 594 | // an lvalue cast, this has been taken out. |
---|
[803deb1] | 595 | output << "("; |
---|
[e39241b] | 596 | output << genType( castExpr->get_result(), "", pretty, genC ); |
---|
[71f4e4f] | 597 | output << ")"; |
---|
[3778cb2] | 598 | } // if |
---|
[da9d79b] | 599 | castExpr->arg->accept( *visitor ); |
---|
| 600 | output << ")"; |
---|
| 601 | } |
---|
| 602 | |
---|
| 603 | void CodeGenerator::postvisit( KeywordCastExpr * castExpr ) { |
---|
| 604 | assertf( ! genC, "KeywordCast should not reach code generation." ); |
---|
| 605 | extension( castExpr ); |
---|
| 606 | output << "((" << castExpr->targetString() << " &)"; |
---|
| 607 | castExpr->arg->accept( *visitor ); |
---|
[803deb1] | 608 | output << ")"; |
---|
[51587aa] | 609 | } |
---|
[71f4e4f] | 610 | |
---|
[9857e8d] | 611 | void CodeGenerator::postvisit( VirtualCastExpr * castExpr ) { |
---|
[a5f0529] | 612 | assertf( ! genC, "VirtualCastExpr should not reach code generation." ); |
---|
| 613 | extension( castExpr ); |
---|
| 614 | output << "(virtual "; |
---|
[9857e8d] | 615 | castExpr->get_arg()->accept( *visitor ); |
---|
[a5f0529] | 616 | output << ")"; |
---|
| 617 | } |
---|
| 618 | |
---|
[9857e8d] | 619 | void CodeGenerator::postvisit( UntypedMemberExpr * memberExpr ) { |
---|
[e39241b] | 620 | assertf( ! genC, "UntypedMemberExpr should not reach code generation." ); |
---|
| 621 | extension( memberExpr ); |
---|
[9857e8d] | 622 | memberExpr->get_aggregate()->accept( *visitor ); |
---|
[5f642e38] | 623 | output << "."; |
---|
[9857e8d] | 624 | memberExpr->get_member()->accept( *visitor ); |
---|
[51587aa] | 625 | } |
---|
[71f4e4f] | 626 | |
---|
[9857e8d] | 627 | void CodeGenerator::postvisit( MemberExpr * memberExpr ) { |
---|
[e04ef3a] | 628 | extension( memberExpr ); |
---|
[9857e8d] | 629 | memberExpr->get_aggregate()->accept( *visitor ); |
---|
[6c4ff37] | 630 | output << "." << mangleName( memberExpr->get_member() ); |
---|
[51587aa] | 631 | } |
---|
[71f4e4f] | 632 | |
---|
[9857e8d] | 633 | void CodeGenerator::postvisit( VariableExpr * variableExpr ) { |
---|
[e04ef3a] | 634 | extension( variableExpr ); |
---|
[51587aa] | 635 | OperatorInfo opInfo; |
---|
| 636 | if ( variableExpr->get_var()->get_linkage() == LinkageSpec::Intrinsic && operatorLookup( variableExpr->get_var()->get_name(), opInfo ) && opInfo.type == OT_CONSTANT ) { |
---|
[6c4ff37] | 637 | output << opInfo.symbol; |
---|
[51587aa] | 638 | } else { |
---|
[6c4ff37] | 639 | output << mangleName( variableExpr->get_var() ); |
---|
[51587aa] | 640 | } // if |
---|
| 641 | } |
---|
[71f4e4f] | 642 | |
---|
[9857e8d] | 643 | void CodeGenerator::postvisit( ConstantExpr * constantExpr ) { |
---|
[51587aa] | 644 | assert( constantExpr->get_constant() ); |
---|
[e04ef3a] | 645 | extension( constantExpr ); |
---|
[9857e8d] | 646 | constantExpr->get_constant()->accept( *visitor ); |
---|
[51587aa] | 647 | } |
---|
[71f4e4f] | 648 | |
---|
[9857e8d] | 649 | void CodeGenerator::postvisit( SizeofExpr * sizeofExpr ) { |
---|
[e04ef3a] | 650 | extension( sizeofExpr ); |
---|
[6c4ff37] | 651 | output << "sizeof("; |
---|
[51587aa] | 652 | if ( sizeofExpr->get_isType() ) { |
---|
[e39241b] | 653 | output << genType( sizeofExpr->get_type(), "", pretty, genC ); |
---|
[51587aa] | 654 | } else { |
---|
[9857e8d] | 655 | sizeofExpr->get_expr()->accept( *visitor ); |
---|
[51587aa] | 656 | } // if |
---|
[6c4ff37] | 657 | output << ")"; |
---|
[51587aa] | 658 | } |
---|
[47534159] | 659 | |
---|
[9857e8d] | 660 | void CodeGenerator::postvisit( AlignofExpr * alignofExpr ) { |
---|
[47534159] | 661 | // use GCC extension to avoid bumping std to C11 |
---|
[8e9cbb2] | 662 | extension( alignofExpr ); |
---|
[47534159] | 663 | output << "__alignof__("; |
---|
[25a054f] | 664 | if ( alignofExpr->get_isType() ) { |
---|
[e39241b] | 665 | output << genType( alignofExpr->get_type(), "", pretty, genC ); |
---|
[47534159] | 666 | } else { |
---|
[9857e8d] | 667 | alignofExpr->get_expr()->accept( *visitor ); |
---|
[47534159] | 668 | } // if |
---|
| 669 | output << ")"; |
---|
| 670 | } |
---|
[71f4e4f] | 671 | |
---|
[9857e8d] | 672 | void CodeGenerator::postvisit( UntypedOffsetofExpr * offsetofExpr ) { |
---|
[e39241b] | 673 | assertf( ! genC, "UntypedOffsetofExpr should not reach code generation." ); |
---|
| 674 | output << "offsetof("; |
---|
| 675 | output << genType( offsetofExpr->get_type(), "", pretty, genC ); |
---|
| 676 | output << ", " << offsetofExpr->get_member(); |
---|
| 677 | output << ")"; |
---|
[2a4b088] | 678 | } |
---|
| 679 | |
---|
[9857e8d] | 680 | void CodeGenerator::postvisit( OffsetofExpr * offsetofExpr ) { |
---|
[25a054f] | 681 | // use GCC builtin |
---|
| 682 | output << "__builtin_offsetof("; |
---|
[e39241b] | 683 | output << genType( offsetofExpr->get_type(), "", pretty, genC ); |
---|
[e551c69] | 684 | output << ", " << mangleName( offsetofExpr->get_member() ); |
---|
[25a054f] | 685 | output << ")"; |
---|
| 686 | } |
---|
[d63eeb0] | 687 | |
---|
[9857e8d] | 688 | void CodeGenerator::postvisit( OffsetPackExpr * offsetPackExpr ) { |
---|
[e39241b] | 689 | assertf( ! genC, "OffsetPackExpr should not reach code generation." ); |
---|
| 690 | output << "__CFA_offsetpack(" << genType( offsetPackExpr->get_type(), "", pretty, genC ) << ")"; |
---|
[afc1045] | 691 | } |
---|
[70a06f6] | 692 | |
---|
[9857e8d] | 693 | void CodeGenerator::postvisit( LogicalExpr * logicalExpr ) { |
---|
[e04ef3a] | 694 | extension( logicalExpr ); |
---|
[6c4ff37] | 695 | output << "("; |
---|
[9857e8d] | 696 | logicalExpr->get_arg1()->accept( *visitor ); |
---|
[51587aa] | 697 | if ( logicalExpr->get_isAnd() ) { |
---|
[6c4ff37] | 698 | output << " && "; |
---|
[51587aa] | 699 | } else { |
---|
[6c4ff37] | 700 | output << " || "; |
---|
[51587aa] | 701 | } // if |
---|
[9857e8d] | 702 | logicalExpr->get_arg2()->accept( *visitor ); |
---|
[6c4ff37] | 703 | output << ")"; |
---|
[51587aa] | 704 | } |
---|
[71f4e4f] | 705 | |
---|
[9857e8d] | 706 | void CodeGenerator::postvisit( ConditionalExpr * conditionalExpr ) { |
---|
[e04ef3a] | 707 | extension( conditionalExpr ); |
---|
[6c4ff37] | 708 | output << "("; |
---|
[9857e8d] | 709 | conditionalExpr->get_arg1()->accept( *visitor ); |
---|
[6c4ff37] | 710 | output << " ? "; |
---|
[9857e8d] | 711 | conditionalExpr->get_arg2()->accept( *visitor ); |
---|
[6c4ff37] | 712 | output << " : "; |
---|
[9857e8d] | 713 | conditionalExpr->get_arg3()->accept( *visitor ); |
---|
[6c4ff37] | 714 | output << ")"; |
---|
[51587aa] | 715 | } |
---|
[71f4e4f] | 716 | |
---|
[9857e8d] | 717 | void CodeGenerator::postvisit( CommaExpr * commaExpr ) { |
---|
[e04ef3a] | 718 | extension( commaExpr ); |
---|
[6c4ff37] | 719 | output << "("; |
---|
[8a6cf7e] | 720 | if ( genC ) { |
---|
| 721 | // arg1 of a CommaExpr is never used, so it can be safely cast to void to reduce gcc warnings. |
---|
| 722 | commaExpr->set_arg1( new CastExpr( commaExpr->get_arg1() ) ); |
---|
| 723 | } |
---|
[9857e8d] | 724 | commaExpr->get_arg1()->accept( *visitor ); |
---|
[6c4ff37] | 725 | output << " , "; |
---|
[9857e8d] | 726 | commaExpr->get_arg2()->accept( *visitor ); |
---|
[6c4ff37] | 727 | output << ")"; |
---|
[51587aa] | 728 | } |
---|
[71f4e4f] | 729 | |
---|
[9857e8d] | 730 | void CodeGenerator::postvisit( TupleAssignExpr * tupleExpr ) { |
---|
[d104b02] | 731 | assertf( ! genC, "TupleAssignExpr should not reach code generation." ); |
---|
[9857e8d] | 732 | tupleExpr->stmtExpr->accept( *visitor ); |
---|
[d104b02] | 733 | } |
---|
| 734 | |
---|
[9857e8d] | 735 | void CodeGenerator::postvisit( UntypedTupleExpr * tupleExpr ) { |
---|
[e39241b] | 736 | assertf( ! genC, "UntypedTupleExpr should not reach code generation." ); |
---|
[f975c65] | 737 | extension( tupleExpr ); |
---|
[e39241b] | 738 | output << "["; |
---|
| 739 | genCommaList( tupleExpr->get_exprs().begin(), tupleExpr->get_exprs().end() ); |
---|
| 740 | output << "]"; |
---|
| 741 | } |
---|
[907eccb] | 742 | |
---|
[9857e8d] | 743 | void CodeGenerator::postvisit( TupleExpr * tupleExpr ) { |
---|
[e39241b] | 744 | assertf( ! genC, "TupleExpr should not reach code generation." ); |
---|
[f975c65] | 745 | extension( tupleExpr ); |
---|
[e39241b] | 746 | output << "["; |
---|
| 747 | genCommaList( tupleExpr->get_exprs().begin(), tupleExpr->get_exprs().end() ); |
---|
| 748 | output << "]"; |
---|
| 749 | } |
---|
[71f4e4f] | 750 | |
---|
[9857e8d] | 751 | void CodeGenerator::postvisit( TupleIndexExpr * tupleExpr ) { |
---|
[f975c65] | 752 | assertf( ! genC, "TupleIndexExpr should not reach code generation." ); |
---|
| 753 | extension( tupleExpr ); |
---|
[9857e8d] | 754 | tupleExpr->get_tuple()->accept( *visitor ); |
---|
[f975c65] | 755 | output << "." << tupleExpr->get_index(); |
---|
| 756 | } |
---|
| 757 | |
---|
[9857e8d] | 758 | void CodeGenerator::postvisit( TypeExpr * typeExpr ) { |
---|
[e4d829b] | 759 | // if ( genC ) std::cerr << "typeexpr still exists: " << typeExpr << std::endl; |
---|
| 760 | // assertf( ! genC, "TypeExpr should not reach code generation." ); |
---|
| 761 | if ( ! genC ) { |
---|
| 762 | output<< genType( typeExpr->get_type(), "", pretty, genC ); |
---|
| 763 | } |
---|
[e39241b] | 764 | } |
---|
[2b6c1e0] | 765 | |
---|
[9857e8d] | 766 | void CodeGenerator::postvisit( AsmExpr * asmExpr ) { |
---|
[7f5566b] | 767 | if ( asmExpr->get_inout() ) { |
---|
| 768 | output << "[ "; |
---|
[9857e8d] | 769 | asmExpr->get_inout()->accept( *visitor ); |
---|
[7f5566b] | 770 | output << " ] "; |
---|
| 771 | } // if |
---|
[9857e8d] | 772 | asmExpr->get_constraint()->accept( *visitor ); |
---|
[7f5566b] | 773 | output << " ( "; |
---|
[9857e8d] | 774 | asmExpr->get_operand()->accept( *visitor ); |
---|
[7f5566b] | 775 | output << " )"; |
---|
| 776 | } |
---|
| 777 | |
---|
[9857e8d] | 778 | void CodeGenerator::postvisit( CompoundLiteralExpr *compLitExpr ) { |
---|
[fbcde64] | 779 | assert( compLitExpr->get_result() && dynamic_cast< ListInit * > ( compLitExpr->get_initializer() ) ); |
---|
[e39241b] | 780 | output << "(" << genType( compLitExpr->get_result(), "", pretty, genC ) << ")"; |
---|
[9857e8d] | 781 | compLitExpr->get_initializer()->accept( *visitor ); |
---|
[3c13c03] | 782 | } |
---|
| 783 | |
---|
[9857e8d] | 784 | void CodeGenerator::postvisit( UniqueExpr * unqExpr ) { |
---|
[d104b02] | 785 | assertf( ! genC, "Unique expressions should not reach code generation." ); |
---|
| 786 | output << "unq<" << unqExpr->get_id() << ">{ "; |
---|
[9857e8d] | 787 | unqExpr->get_expr()->accept( *visitor ); |
---|
[d104b02] | 788 | output << " }"; |
---|
| 789 | } |
---|
| 790 | |
---|
[9857e8d] | 791 | void CodeGenerator::postvisit( StmtExpr * stmtExpr ) { |
---|
[44b4114] | 792 | std::list< Statement * > & stmts = stmtExpr->statements->kids; |
---|
[d22e90f] | 793 | output << "({" << endl; |
---|
[f7cb0bc] | 794 | ++indent; |
---|
[3c13c03] | 795 | unsigned int numStmts = stmts.size(); |
---|
| 796 | unsigned int i = 0; |
---|
| 797 | for ( Statement * stmt : stmts ) { |
---|
[058f549] | 798 | output << indent << printLabels( stmt->get_labels() ); |
---|
[3c13c03] | 799 | if ( i+1 == numStmts ) { |
---|
| 800 | // last statement in a statement expression needs to be handled specially - |
---|
| 801 | // cannot cast to void, otherwise the expression statement has no value |
---|
| 802 | if ( ExprStmt * exprStmt = dynamic_cast< ExprStmt * >( stmt ) ) { |
---|
[44b4114] | 803 | exprStmt->expr->accept( *visitor ); |
---|
[3c13c03] | 804 | output << ";" << endl; |
---|
| 805 | ++i; |
---|
| 806 | break; |
---|
| 807 | } |
---|
| 808 | } |
---|
[9857e8d] | 809 | stmt->accept( *visitor ); |
---|
[3c13c03] | 810 | output << endl; |
---|
| 811 | if ( wantSpacing( stmt ) ) { |
---|
| 812 | output << endl; |
---|
| 813 | } // if |
---|
| 814 | ++i; |
---|
| 815 | } |
---|
[f7cb0bc] | 816 | --indent; |
---|
[3c13c03] | 817 | output << indent << "})"; |
---|
[6eb8948] | 818 | } |
---|
| 819 | |
---|
[4e8949f] | 820 | void CodeGenerator::postvisit( ConstructorExpr * expr ) { |
---|
| 821 | assertf( ! genC, "Unique expressions should not reach code generation." ); |
---|
| 822 | expr->callExpr->accept( *visitor ); |
---|
| 823 | } |
---|
| 824 | |
---|
[44b4114] | 825 | void CodeGenerator::postvisit( DeletedExpr * expr ) { |
---|
| 826 | assertf( ! genC, "Deleted expressions should not reach code generation." ); |
---|
| 827 | expr->expr->accept( *visitor ); |
---|
| 828 | } |
---|
| 829 | |
---|
[4810867] | 830 | // *** Statements |
---|
[9857e8d] | 831 | void CodeGenerator::postvisit( CompoundStmt * compoundStmt ) { |
---|
[51587aa] | 832 | std::list<Statement*> ks = compoundStmt->get_kids(); |
---|
[2b6c1e0] | 833 | output << "{" << endl; |
---|
[51587aa] | 834 | |
---|
[f7cb0bc] | 835 | ++indent; |
---|
[51587aa] | 836 | |
---|
[7f5566b] | 837 | for ( std::list<Statement *>::iterator i = ks.begin(); i != ks.end(); i++ ) { |
---|
[cda48b6] | 838 | output << indent << printLabels( (*i)->get_labels() ); |
---|
[9857e8d] | 839 | (*i)->accept( *visitor ); |
---|
[2b6c1e0] | 840 | |
---|
[6c4ff37] | 841 | output << endl; |
---|
[2b6c1e0] | 842 | if ( wantSpacing( *i ) ) { |
---|
| 843 | output << endl; |
---|
[3778cb2] | 844 | } // if |
---|
[8688ce1] | 845 | } // for |
---|
[f7cb0bc] | 846 | --indent; |
---|
[51587aa] | 847 | |
---|
[cda48b6] | 848 | output << indent << "}"; |
---|
[51587aa] | 849 | } |
---|
| 850 | |
---|
[9857e8d] | 851 | void CodeGenerator::postvisit( ExprStmt * exprStmt ) { |
---|
[6c4ff37] | 852 | assert( exprStmt ); |
---|
[262f085f] | 853 | if ( genC ) { |
---|
| 854 | // cast the top-level expression to void to reduce gcc warnings. |
---|
[8a6cf7e] | 855 | exprStmt->set_expr( new CastExpr( exprStmt->get_expr() ) ); |
---|
[262f085f] | 856 | } |
---|
[9857e8d] | 857 | exprStmt->get_expr()->accept( *visitor ); |
---|
[321a2481] | 858 | output << ";"; |
---|
[51587aa] | 859 | } |
---|
| 860 | |
---|
[9857e8d] | 861 | void CodeGenerator::postvisit( AsmStmt * asmStmt ) { |
---|
[7f5566b] | 862 | output << "asm "; |
---|
| 863 | if ( asmStmt->get_voltile() ) output << "volatile "; |
---|
| 864 | if ( ! asmStmt->get_gotolabels().empty() ) output << "goto "; |
---|
| 865 | output << "( "; |
---|
[9857e8d] | 866 | if ( asmStmt->get_instruction() ) asmStmt->get_instruction()->accept( *visitor ); |
---|
[7f5566b] | 867 | output << " : "; |
---|
| 868 | genCommaList( asmStmt->get_output().begin(), asmStmt->get_output().end() ); |
---|
| 869 | output << " : "; |
---|
| 870 | genCommaList( asmStmt->get_input().begin(), asmStmt->get_input().end() ); |
---|
| 871 | output << " : "; |
---|
| 872 | genCommaList( asmStmt->get_clobber().begin(), asmStmt->get_clobber().end() ); |
---|
| 873 | if ( ! asmStmt->get_gotolabels().empty() ) { |
---|
| 874 | output << " : "; |
---|
| 875 | for ( std::list<Label>::iterator begin = asmStmt->get_gotolabels().begin();; ) { |
---|
| 876 | output << *begin++; |
---|
| 877 | if ( begin == asmStmt->get_gotolabels().end() ) break; |
---|
| 878 | output << ", "; |
---|
| 879 | } // for |
---|
| 880 | } // if |
---|
[d7312ac] | 881 | output << " );"; |
---|
[7f5566b] | 882 | } |
---|
| 883 | |
---|
[9857e8d] | 884 | void CodeGenerator::postvisit( AsmDecl * asmDecl ) { |
---|
[e994912] | 885 | output << "asm "; |
---|
| 886 | AsmStmt * asmStmt = asmDecl->get_stmt(); |
---|
| 887 | output << "( "; |
---|
[9857e8d] | 888 | if ( asmStmt->get_instruction() ) asmStmt->get_instruction()->accept( *visitor ); |
---|
[d7312ac] | 889 | output << " )"; |
---|
[e994912] | 890 | } |
---|
| 891 | |
---|
[cc32d83] | 892 | void CodeGenerator::postvisit( DirectiveStmt * dirStmt ) { |
---|
[d7312ac] | 893 | output << endl << dirStmt->directive; // endl prevents spaces before directive |
---|
[cc32d83] | 894 | } |
---|
| 895 | |
---|
[9857e8d] | 896 | void CodeGenerator::postvisit( IfStmt * ifStmt ) { |
---|
[7f5566b] | 897 | output << "if ( "; |
---|
[9857e8d] | 898 | ifStmt->get_condition()->accept( *visitor ); |
---|
[7f5566b] | 899 | output << " ) "; |
---|
[51587aa] | 900 | |
---|
[9857e8d] | 901 | ifStmt->get_thenPart()->accept( *visitor ); |
---|
[51587aa] | 902 | |
---|
| 903 | if ( ifStmt->get_elsePart() != 0) { |
---|
[2b6c1e0] | 904 | output << " else "; |
---|
[9857e8d] | 905 | ifStmt->get_elsePart()->accept( *visitor ); |
---|
[51587aa] | 906 | } // if |
---|
| 907 | } |
---|
| 908 | |
---|
[9857e8d] | 909 | void CodeGenerator::postvisit( SwitchStmt * switchStmt ) { |
---|
[d7312ac] | 910 | output << "switch ( "; |
---|
[9857e8d] | 911 | switchStmt->get_condition()->accept( *visitor ); |
---|
[7f5566b] | 912 | output << " ) "; |
---|
[71f4e4f] | 913 | |
---|
[d22e90f] | 914 | output << "{" << endl; |
---|
[f7cb0bc] | 915 | ++indent; |
---|
[9857e8d] | 916 | acceptAll( switchStmt->get_statements(), *visitor ); |
---|
[f7cb0bc] | 917 | --indent; |
---|
[cda48b6] | 918 | output << indent << "}"; |
---|
[51587aa] | 919 | } |
---|
| 920 | |
---|
[9857e8d] | 921 | void CodeGenerator::postvisit( CaseStmt * caseStmt ) { |
---|
[8bafacc] | 922 | updateLocation( caseStmt ); |
---|
[1dcd9554] | 923 | output << indent; |
---|
[eb3261f] | 924 | if ( caseStmt->isDefault()) { |
---|
[2b6c1e0] | 925 | output << "default"; |
---|
[eb3261f] | 926 | } else { |
---|
[2b6c1e0] | 927 | output << "case "; |
---|
[9857e8d] | 928 | caseStmt->get_condition()->accept( *visitor ); |
---|
[17cd4eb] | 929 | } // if |
---|
[d22e90f] | 930 | output << ":" << endl; |
---|
[71f4e4f] | 931 | |
---|
[51587aa] | 932 | std::list<Statement *> sts = caseStmt->get_statements(); |
---|
| 933 | |
---|
[f7cb0bc] | 934 | ++indent; |
---|
[51587aa] | 935 | for ( std::list<Statement *>::iterator i = sts.begin(); i != sts.end(); i++) { |
---|
[d7312ac] | 936 | output << indent << printLabels( (*i)->get_labels() ) ; |
---|
[9857e8d] | 937 | (*i)->accept( *visitor ); |
---|
[6c4ff37] | 938 | output << endl; |
---|
[3778cb2] | 939 | } // for |
---|
[f7cb0bc] | 940 | --indent; |
---|
[51587aa] | 941 | } |
---|
| 942 | |
---|
[9857e8d] | 943 | void CodeGenerator::postvisit( BranchStmt * branchStmt ) { |
---|
[51587aa] | 944 | switch ( branchStmt->get_type()) { |
---|
| 945 | case BranchStmt::Goto: |
---|
| 946 | if ( ! branchStmt->get_target().empty() ) |
---|
[6c4ff37] | 947 | output << "goto " << branchStmt->get_target(); |
---|
[71f4e4f] | 948 | else { |
---|
[51587aa] | 949 | if ( branchStmt->get_computedTarget() != 0 ) { |
---|
[6c4ff37] | 950 | output << "goto *"; |
---|
[9857e8d] | 951 | branchStmt->get_computedTarget()->accept( *visitor ); |
---|
[51587aa] | 952 | } // if |
---|
| 953 | } // if |
---|
| 954 | break; |
---|
| 955 | case BranchStmt::Break: |
---|
[6c4ff37] | 956 | output << "break"; |
---|
[51587aa] | 957 | break; |
---|
| 958 | case BranchStmt::Continue: |
---|
[6c4ff37] | 959 | output << "continue"; |
---|
[51587aa] | 960 | break; |
---|
[7c2a7b6] | 961 | case BranchStmt::FallThrough: |
---|
| 962 | case BranchStmt::FallThroughDefault: |
---|
| 963 | assertf( ! genC, "fallthru should not reach code generation." ); |
---|
| 964 | output << "fallthru"; |
---|
| 965 | break; |
---|
[3778cb2] | 966 | } // switch |
---|
[7c2a7b6] | 967 | // print branch target for labelled break/continue/fallthru in debug mode |
---|
| 968 | if ( ! genC && branchStmt->get_type() != BranchStmt::Goto ) { |
---|
| 969 | if ( ! branchStmt->get_target().empty() ) { |
---|
| 970 | output << " " << branchStmt->get_target(); |
---|
| 971 | } else if ( branchStmt->get_type() == BranchStmt::FallThrough ) { |
---|
| 972 | output << " default"; |
---|
| 973 | } |
---|
| 974 | } |
---|
[2b6c1e0] | 975 | output << ";"; |
---|
[51587aa] | 976 | } |
---|
| 977 | |
---|
[9857e8d] | 978 | void CodeGenerator::postvisit( ReturnStmt * returnStmt ) { |
---|
[6c4ff37] | 979 | output << "return "; |
---|
[9857e8d] | 980 | maybeAccept( returnStmt->get_expr(), *visitor ); |
---|
[6c4ff37] | 981 | output << ";"; |
---|
[51587aa] | 982 | } |
---|
| 983 | |
---|
[9857e8d] | 984 | void CodeGenerator::postvisit( ThrowStmt * throwStmt ) { |
---|
[daf1af8] | 985 | assertf( ! genC, "Throw statements should not reach code generation." ); |
---|
| 986 | |
---|
| 987 | output << ((throwStmt->get_kind() == ThrowStmt::Terminate) ? |
---|
| 988 | "throw" : "throwResume"); |
---|
| 989 | if (throwStmt->get_expr()) { |
---|
| 990 | output << " "; |
---|
[9857e8d] | 991 | throwStmt->get_expr()->accept( *visitor ); |
---|
[daf1af8] | 992 | } |
---|
| 993 | if (throwStmt->get_target()) { |
---|
| 994 | output << " _At "; |
---|
[9857e8d] | 995 | throwStmt->get_target()->accept( *visitor ); |
---|
[daf1af8] | 996 | } |
---|
| 997 | output << ";"; |
---|
| 998 | } |
---|
[e4ea10b7] | 999 | void CodeGenerator::postvisit( CatchStmt * stmt ) { |
---|
| 1000 | assertf( ! genC, "Catch statements should not reach code generation." ); |
---|
| 1001 | |
---|
| 1002 | output << ((stmt->get_kind() == CatchStmt::Terminate) ? |
---|
| 1003 | "catch" : "catchResume"); |
---|
| 1004 | output << "( "; |
---|
| 1005 | stmt->decl->accept( *visitor ); |
---|
| 1006 | output << " ) "; |
---|
| 1007 | |
---|
| 1008 | if( stmt->cond ) { |
---|
| 1009 | output << "if/when(?) ("; |
---|
| 1010 | stmt->cond->accept( *visitor ); |
---|
| 1011 | output << ") "; |
---|
| 1012 | } |
---|
| 1013 | stmt->body->accept( *visitor ); |
---|
| 1014 | } |
---|
| 1015 | |
---|
| 1016 | void CodeGenerator::postvisit( WaitForStmt * stmt ) { |
---|
| 1017 | assertf( ! genC, "Waitfor statements should not reach code generation." ); |
---|
| 1018 | |
---|
| 1019 | bool first = true; |
---|
| 1020 | for( auto & clause : stmt->clauses ) { |
---|
| 1021 | if(first) { output << "or "; first = false; } |
---|
| 1022 | if( clause.condition ) { |
---|
| 1023 | output << "when("; |
---|
| 1024 | stmt->timeout.condition->accept( *visitor ); |
---|
| 1025 | output << ") "; |
---|
| 1026 | } |
---|
| 1027 | output << "waitfor("; |
---|
| 1028 | clause.target.function->accept( *visitor ); |
---|
| 1029 | for( Expression * expr : clause.target.arguments ) { |
---|
| 1030 | output << ","; |
---|
| 1031 | expr->accept( *visitor ); |
---|
| 1032 | } |
---|
| 1033 | output << ") "; |
---|
| 1034 | clause.statement->accept( *visitor ); |
---|
| 1035 | } |
---|
| 1036 | |
---|
| 1037 | if( stmt->timeout.statement ) { |
---|
| 1038 | output << "or "; |
---|
| 1039 | if( stmt->timeout.condition ) { |
---|
| 1040 | output << "when("; |
---|
| 1041 | stmt->timeout.condition->accept( *visitor ); |
---|
| 1042 | output << ") "; |
---|
| 1043 | } |
---|
| 1044 | output << "timeout("; |
---|
| 1045 | stmt->timeout.time->accept( *visitor ); |
---|
| 1046 | output << ") "; |
---|
| 1047 | stmt->timeout.statement->accept( *visitor ); |
---|
| 1048 | } |
---|
| 1049 | |
---|
| 1050 | if( stmt->orelse.statement ) { |
---|
| 1051 | output << "or "; |
---|
| 1052 | if( stmt->orelse.condition ) { |
---|
| 1053 | output << "when("; |
---|
| 1054 | stmt->orelse.condition->accept( *visitor ); |
---|
| 1055 | output << ")"; |
---|
| 1056 | } |
---|
| 1057 | output << "else "; |
---|
| 1058 | stmt->orelse.statement->accept( *visitor ); |
---|
| 1059 | } |
---|
| 1060 | } |
---|
| 1061 | |
---|
[55d6e8de] | 1062 | void CodeGenerator::postvisit( WithStmt * with ) { |
---|
| 1063 | if ( ! genC ) { |
---|
| 1064 | output << "with ( "; |
---|
| 1065 | genCommaList( with->exprs.begin(), with->exprs.end() ); |
---|
| 1066 | output << " ) "; |
---|
| 1067 | } |
---|
| 1068 | with->stmt->accept( *visitor ); |
---|
| 1069 | } |
---|
[daf1af8] | 1070 | |
---|
[9857e8d] | 1071 | void CodeGenerator::postvisit( WhileStmt * whileStmt ) { |
---|
[321a2481] | 1072 | if ( whileStmt->get_isDoWhile() ) { |
---|
[d7312ac] | 1073 | output << "do"; |
---|
[321a2481] | 1074 | } else { |
---|
[d7312ac] | 1075 | output << "while ("; |
---|
[9857e8d] | 1076 | whileStmt->get_condition()->accept( *visitor ); |
---|
[6c4ff37] | 1077 | output << ")"; |
---|
[51587aa] | 1078 | } // if |
---|
[2b6c1e0] | 1079 | output << " "; |
---|
[51587aa] | 1080 | |
---|
[2b6c1e0] | 1081 | output << CodeGenerator::printLabels( whileStmt->get_body()->get_labels() ); |
---|
[9857e8d] | 1082 | whileStmt->get_body()->accept( *visitor ); |
---|
[51587aa] | 1083 | |
---|
[cda48b6] | 1084 | output << indent; |
---|
[51587aa] | 1085 | |
---|
| 1086 | if ( whileStmt->get_isDoWhile() ) { |
---|
[d7312ac] | 1087 | output << " while ("; |
---|
[9857e8d] | 1088 | whileStmt->get_condition()->accept( *visitor ); |
---|
[6c4ff37] | 1089 | output << ");"; |
---|
[51587aa] | 1090 | } // if |
---|
| 1091 | } |
---|
| 1092 | |
---|
[9857e8d] | 1093 | void CodeGenerator::postvisit( ForStmt * forStmt ) { |
---|
[8e9cbb2] | 1094 | // initialization is always hoisted, so don't bother doing anything with that |
---|
[145f1fc] | 1095 | output << "for (;"; |
---|
[51587aa] | 1096 | |
---|
[321a2481] | 1097 | if ( forStmt->get_condition() != 0 ) { |
---|
[9857e8d] | 1098 | forStmt->get_condition()->accept( *visitor ); |
---|
[3778cb2] | 1099 | } // if |
---|
[6c4ff37] | 1100 | output << ";"; |
---|
[51587aa] | 1101 | |
---|
[321a2481] | 1102 | if ( forStmt->get_increment() != 0 ) { |
---|
| 1103 | // cast the top-level expression to void to reduce gcc warnings. |
---|
| 1104 | Expression * expr = new CastExpr( forStmt->get_increment() ); |
---|
[9857e8d] | 1105 | expr->accept( *visitor ); |
---|
[3778cb2] | 1106 | } // if |
---|
[2b6c1e0] | 1107 | output << ") "; |
---|
[51587aa] | 1108 | |
---|
| 1109 | if ( forStmt->get_body() != 0 ) { |
---|
[2b6c1e0] | 1110 | output << CodeGenerator::printLabels( forStmt->get_body()->get_labels() ); |
---|
[9857e8d] | 1111 | forStmt->get_body()->accept( *visitor ); |
---|
[51587aa] | 1112 | } // if |
---|
| 1113 | } |
---|
| 1114 | |
---|
[9857e8d] | 1115 | void CodeGenerator::postvisit( __attribute__((unused)) NullStmt * nullStmt ) { |
---|
[cda48b6] | 1116 | //output << indent << CodeGenerator::printLabels( nullStmt->get_labels() ); |
---|
[6c4ff37] | 1117 | output << "/* null statement */ ;"; |
---|
[51587aa] | 1118 | } |
---|
| 1119 | |
---|
[9857e8d] | 1120 | void CodeGenerator::postvisit( DeclStmt * declStmt ) { |
---|
| 1121 | declStmt->get_decl()->accept( *visitor ); |
---|
[71f4e4f] | 1122 | |
---|
[51587aa] | 1123 | if ( doSemicolon( declStmt->get_decl() ) ) { |
---|
[6c4ff37] | 1124 | output << ";"; |
---|
[51587aa] | 1125 | } // if |
---|
| 1126 | } |
---|
| 1127 | |
---|
[9857e8d] | 1128 | void CodeGenerator::postvisit( ImplicitCtorDtorStmt * stmt ) { |
---|
| 1129 | assertf( ! genC, "ImplicitCtorDtorStmts should not reach code generation." ); |
---|
| 1130 | stmt->callStmt->accept( *visitor ); |
---|
| 1131 | } |
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| 1132 | |
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[dd020c0] | 1133 | void CodeGenerator::handleStorageClass( DeclarationWithType * decl ) { |
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[fb04321] | 1134 | if ( decl->get_storageClasses().any() ) { |
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[6e8bd43] | 1135 | decl->get_storageClasses().print( output ); |
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[a7c90d4] | 1136 | } // if |
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[dd020c0] | 1137 | } // CodeGenerator::handleStorageClass |
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[9facf3b] | 1138 | |
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| 1139 | std::string genName( DeclarationWithType * decl ) { |
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| 1140 | CodeGen::OperatorInfo opInfo; |
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| 1141 | if ( operatorLookup( decl->get_name(), opInfo ) ) { |
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| 1142 | return opInfo.outputName; |
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| 1143 | } else { |
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| 1144 | return decl->get_name(); |
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| 1145 | } // if |
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| 1146 | } |
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[51b7345] | 1147 | } // namespace CodeGen |
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[51587aa] | 1148 | |
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[50377a4] | 1149 | |
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| 1150 | unsigned Indenter::tabsize = 2; |
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| 1151 | |
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[e149f77] | 1152 | std::ostream & operator<<( std::ostream & out, const BaseSyntaxNode * node ) { |
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| 1153 | if ( node ) { |
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| 1154 | node->print( out ); |
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| 1155 | } else { |
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| 1156 | out << "nullptr"; |
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| 1157 | } |
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| 1158 | return out; |
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| 1159 | } |
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| 1160 | |
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[51587aa] | 1161 | // Local Variables: // |
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| 1162 | // tab-width: 4 // |
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| 1163 | // mode: c++ // |
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| 1164 | // compile-command: "make install" // |
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| 1165 | // End: // |
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