[2d11663] | 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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| 7 | // InitTweak.cc -- |
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| 8 | // |
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| 9 | // Author : Rob Schluntz |
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| 10 | // Created On : Fri May 13 11:26:36 2016 |
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[033ff37] | 11 | // Last Modified By : Peter A. Buhr |
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[07de76b] | 12 | // Last Modified On : Fri Dec 13 23:15:52 2019 |
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| 13 | // Update Count : 8 |
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[2d11663] | 14 | // |
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| 15 | |
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[d180746] | 16 | #include <algorithm> // for find, all_of |
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[e3e16bc] | 17 | #include <cassert> // for assertf, assert, strict_dynamic_cast |
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[d180746] | 18 | #include <iostream> // for ostream, cerr, endl |
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| 19 | #include <iterator> // for back_insert_iterator, back_inserter |
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| 20 | #include <memory> // for __shared_ptr |
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[2d11663] | 21 | #include <vector> |
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[d180746] | 22 | |
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[9b4f329] | 23 | #include "AST/Expr.hpp" |
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[c1ed2ee] | 24 | #include "AST/Init.hpp" |
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[b8524ca] | 25 | #include "AST/Node.hpp" |
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[c1ed2ee] | 26 | #include "AST/Pass.hpp" |
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[9b4f329] | 27 | #include "AST/Stmt.hpp" |
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[9e1d485] | 28 | #include "AST/Type.hpp" |
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[fd236ed] | 29 | #include "Common/PassVisitor.h" |
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[d180746] | 30 | #include "Common/SemanticError.h" // for SemanticError |
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| 31 | #include "Common/UniqueName.h" // for UniqueName |
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| 32 | #include "Common/utility.h" // for toString, deleteAll, maybeClone |
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| 33 | #include "GenPoly/GenPoly.h" // for getFunctionType |
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[2b46a13] | 34 | #include "InitTweak.h" |
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[d180746] | 35 | #include "ResolvExpr/typeops.h" // for typesCompatibleIgnoreQualifiers |
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[f5c3b6c] | 36 | #include "SymTab/Autogen.h" |
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[d180746] | 37 | #include "SymTab/Indexer.h" // for Indexer |
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[07de76b] | 38 | #include "SynTree/LinkageSpec.h" // for Spec, isBuiltin, Intrinsic |
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[d180746] | 39 | #include "SynTree/Attribute.h" // for Attribute |
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| 40 | #include "SynTree/Constant.h" // for Constant |
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| 41 | #include "SynTree/Declaration.h" // for ObjectDecl, DeclarationWithType |
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| 42 | #include "SynTree/Expression.h" // for Expression, UntypedExpr, Applicati... |
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| 43 | #include "SynTree/Initializer.h" // for Initializer, ListInit, Designation |
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[ba3706f] | 44 | #include "SynTree/Label.h" // for Label |
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[d180746] | 45 | #include "SynTree/Statement.h" // for CompoundStmt, ExprStmt, BranchStmt |
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| 46 | #include "SynTree/Type.h" // for FunctionType, ArrayType, PointerType |
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| 47 | #include "SynTree/Visitor.h" // for Visitor, maybeAccept |
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[29bc63e] | 48 | #include "Tuples/Tuples.h" // for Tuples::isTtype |
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[d180746] | 49 | |
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[2b46a13] | 50 | namespace InitTweak { |
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[64071c2] | 51 | namespace { |
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[1fbeebd] | 52 | struct HasDesignations : public WithShortCircuiting { |
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[64071c2] | 53 | bool hasDesignations = false; |
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[fd236ed] | 54 | |
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| 55 | void previsit( BaseSyntaxNode * ) { |
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| 56 | // short circuit if we already know there are designations |
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| 57 | if ( hasDesignations ) visit_children = false; |
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| 58 | } |
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| 59 | |
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| 60 | void previsit( Designation * des ) { |
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| 61 | // short circuit if we already know there are designations |
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| 62 | if ( hasDesignations ) visit_children = false; |
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| 63 | else if ( ! des->get_designators().empty() ) { |
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| 64 | hasDesignations = true; |
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| 65 | visit_children = false; |
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| 66 | } |
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[64071c2] | 67 | } |
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| 68 | }; |
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[2b46a13] | 69 | |
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[ef3d798] | 70 | struct InitDepthChecker : public WithGuards { |
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[dcd73d1] | 71 | bool depthOkay = true; |
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| 72 | Type * type; |
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| 73 | int curDepth = 0, maxDepth = 0; |
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| 74 | InitDepthChecker( Type * type ) : type( type ) { |
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| 75 | Type * t = type; |
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| 76 | while ( ArrayType * at = dynamic_cast< ArrayType * >( t ) ) { |
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| 77 | maxDepth++; |
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| 78 | t = at->get_base(); |
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| 79 | } |
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| 80 | maxDepth++; |
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| 81 | } |
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[ef3d798] | 82 | void previsit( ListInit * ) { |
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[dcd73d1] | 83 | curDepth++; |
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[ef3d798] | 84 | GuardAction( [this]() { curDepth--; } ); |
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[dcd73d1] | 85 | if ( curDepth > maxDepth ) depthOkay = false; |
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| 86 | } |
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| 87 | }; |
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| 88 | |
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[16ba4a6f] | 89 | struct HasDesignations_new : public ast::WithShortCircuiting { |
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| 90 | bool result = false; |
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| 91 | |
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| 92 | void previsit( const ast::Node * ) { |
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| 93 | // short circuit if we already know there are designations |
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| 94 | if ( result ) visit_children = false; |
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| 95 | } |
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| 96 | |
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| 97 | void previsit( const ast::Designation * des ) { |
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| 98 | // short circuit if we already know there are designations |
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| 99 | if ( result ) visit_children = false; |
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| 100 | else if ( ! des->designators.empty() ) { |
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| 101 | result = true; |
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| 102 | visit_children = false; |
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| 103 | } |
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| 104 | } |
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| 105 | }; |
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| 106 | |
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| 107 | struct InitDepthChecker_new : public ast::WithGuards { |
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| 108 | bool result = true; |
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| 109 | const ast::Type * type; |
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| 110 | int curDepth = 0, maxDepth = 0; |
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| 111 | InitDepthChecker_new( const ast::Type * type ) : type( type ) { |
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| 112 | const ast::Type * t = type; |
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| 113 | while ( auto at = dynamic_cast< const ast::ArrayType * >( t ) ) { |
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| 114 | maxDepth++; |
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| 115 | t = at->base; |
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| 116 | } |
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| 117 | maxDepth++; |
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| 118 | } |
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| 119 | void previsit( ListInit * ) { |
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| 120 | curDepth++; |
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| 121 | GuardAction( [this]() { curDepth--; } ); |
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| 122 | if ( curDepth > maxDepth ) result = false; |
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| 123 | } |
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| 124 | }; |
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| 125 | |
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[c1ed2ee] | 126 | struct InitFlattener_old : public WithShortCircuiting { |
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[c3f551b] | 127 | void previsit( SingleInit * singleInit ) { |
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| 128 | visit_children = false; |
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| 129 | argList.push_back( singleInit->value->clone() ); |
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| 130 | } |
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[64071c2] | 131 | std::list< Expression * > argList; |
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| 132 | }; |
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[2b46a13] | 133 | |
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[c1ed2ee] | 134 | struct InitFlattener_new : public ast::WithShortCircuiting { |
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| 135 | std::vector< ast::ptr< ast::Expr > > argList; |
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| 136 | |
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| 137 | void previsit( const ast::SingleInit * singleInit ) { |
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| 138 | visit_children = false; |
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| 139 | argList.emplace_back( singleInit->value ); |
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| 140 | } |
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| 141 | }; |
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| 142 | |
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| 143 | } // anonymous namespace |
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[2b46a13] | 144 | |
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[64071c2] | 145 | std::list< Expression * > makeInitList( Initializer * init ) { |
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[c1ed2ee] | 146 | PassVisitor<InitFlattener_old> flattener; |
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[4d2434a] | 147 | maybeAccept( init, flattener ); |
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[c3f551b] | 148 | return flattener.pass.argList; |
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[64071c2] | 149 | } |
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[2b46a13] | 150 | |
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[64071c2] | 151 | bool isDesignated( Initializer * init ) { |
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[fd236ed] | 152 | PassVisitor<HasDesignations> finder; |
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[64071c2] | 153 | maybeAccept( init, finder ); |
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[fd236ed] | 154 | return finder.pass.hasDesignations; |
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[dcd73d1] | 155 | } |
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| 156 | |
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| 157 | bool checkInitDepth( ObjectDecl * objDecl ) { |
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[ef3d798] | 158 | PassVisitor<InitDepthChecker> checker( objDecl->type ); |
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| 159 | maybeAccept( objDecl->init, checker ); |
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| 160 | return checker.pass.depthOkay; |
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[64071c2] | 161 | } |
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[2b46a13] | 162 | |
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[16ba4a6f] | 163 | bool isDesignated( const ast::Init * init ) { |
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| 164 | ast::Pass<HasDesignations_new> finder; |
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| 165 | maybe_accept( init, finder ); |
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| 166 | return finder.core.result; |
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| 167 | } |
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| 168 | |
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| 169 | bool checkInitDepth( const ast::ObjectDecl * objDecl ) { |
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| 170 | ast::Pass<InitDepthChecker_new> checker( objDecl->type ); |
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| 171 | maybe_accept( objDecl->init.get(), checker ); |
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| 172 | return checker.core.result; |
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| 173 | } |
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| 174 | |
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[b8524ca] | 175 | std::vector< ast::ptr< ast::Expr > > makeInitList( const ast::Init * init ) { |
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[c1ed2ee] | 176 | ast::Pass< InitFlattener_new > flattener; |
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| 177 | maybe_accept( init, flattener ); |
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[7ff3e522] | 178 | return std::move( flattener.core.argList ); |
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[b8524ca] | 179 | } |
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| 180 | |
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| 181 | class InitExpander_old::ExpanderImpl { |
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[39f84a4] | 182 | public: |
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[3351cc0] | 183 | virtual ~ExpanderImpl() = default; |
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[39f84a4] | 184 | virtual std::list< Expression * > next( std::list< Expression * > & indices ) = 0; |
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[4d2434a] | 185 | virtual Statement * buildListInit( UntypedExpr * callExpr, std::list< Expression * > & indices ) = 0; |
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[39f84a4] | 186 | }; |
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| 187 | |
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[b8524ca] | 188 | class InitImpl_old : public InitExpander_old::ExpanderImpl { |
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[39f84a4] | 189 | public: |
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[b8524ca] | 190 | InitImpl_old( Initializer * init ) : init( init ) {} |
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| 191 | virtual ~InitImpl_old() = default; |
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[39f84a4] | 192 | |
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[7e003011] | 193 | virtual std::list< Expression * > next( __attribute((unused)) std::list< Expression * > & indices ) { |
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[39f84a4] | 194 | // this is wrong, but just a placeholder for now |
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[4d2434a] | 195 | // if ( ! flattened ) flatten( indices ); |
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| 196 | // return ! inits.empty() ? makeInitList( inits.front() ) : std::list< Expression * >(); |
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| 197 | return makeInitList( init ); |
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[39f84a4] | 198 | } |
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[4d2434a] | 199 | |
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| 200 | virtual Statement * buildListInit( UntypedExpr * callExpr, std::list< Expression * > & indices ); |
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[39f84a4] | 201 | private: |
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[4d2434a] | 202 | Initializer * init; |
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[39f84a4] | 203 | }; |
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| 204 | |
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[b8524ca] | 205 | class ExprImpl_old : public InitExpander_old::ExpanderImpl { |
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[39f84a4] | 206 | public: |
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[b8524ca] | 207 | ExprImpl_old( Expression * expr ) : arg( expr ) {} |
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| 208 | virtual ~ExprImpl_old() { delete arg; } |
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[9b4c936] | 209 | |
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[39f84a4] | 210 | virtual std::list< Expression * > next( std::list< Expression * > & indices ) { |
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| 211 | std::list< Expression * > ret; |
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| 212 | Expression * expr = maybeClone( arg ); |
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| 213 | if ( expr ) { |
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| 214 | for ( std::list< Expression * >::reverse_iterator it = indices.rbegin(); it != indices.rend(); ++it ) { |
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| 215 | // go through indices and layer on subscript exprs ?[?] |
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| 216 | ++it; |
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| 217 | UntypedExpr * subscriptExpr = new UntypedExpr( new NameExpr( "?[?]") ); |
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| 218 | subscriptExpr->get_args().push_back( expr ); |
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| 219 | subscriptExpr->get_args().push_back( (*it)->clone() ); |
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| 220 | expr = subscriptExpr; |
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| 221 | } |
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| 222 | ret.push_back( expr ); |
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| 223 | } |
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| 224 | return ret; |
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| 225 | } |
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[4d2434a] | 226 | |
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| 227 | virtual Statement * buildListInit( UntypedExpr * callExpr, std::list< Expression * > & indices ); |
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[39f84a4] | 228 | private: |
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| 229 | Expression * arg; |
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| 230 | }; |
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| 231 | |
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[b8524ca] | 232 | InitExpander_old::InitExpander_old( Initializer * init ) : expander( new InitImpl_old( init ) ) {} |
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[39f84a4] | 233 | |
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[b8524ca] | 234 | InitExpander_old::InitExpander_old( Expression * expr ) : expander( new ExprImpl_old( expr ) ) {} |
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[39f84a4] | 235 | |
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[b8524ca] | 236 | std::list< Expression * > InitExpander_old::operator*() { |
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[39f84a4] | 237 | return cur; |
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| 238 | } |
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| 239 | |
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[b8524ca] | 240 | InitExpander_old & InitExpander_old::operator++() { |
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[39f84a4] | 241 | cur = expander->next( indices ); |
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| 242 | return *this; |
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| 243 | } |
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| 244 | |
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| 245 | // use array indices list to build switch statement |
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[b8524ca] | 246 | void InitExpander_old::addArrayIndex( Expression * index, Expression * dimension ) { |
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[39f84a4] | 247 | indices.push_back( index ); |
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| 248 | indices.push_back( dimension ); |
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| 249 | } |
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| 250 | |
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[b8524ca] | 251 | void InitExpander_old::clearArrayIndices() { |
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[9b4c936] | 252 | deleteAll( indices ); |
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[4d2434a] | 253 | indices.clear(); |
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[1a5ad8c] | 254 | } |
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| 255 | |
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[b8524ca] | 256 | bool InitExpander_old::addReference() { |
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[1a5ad8c] | 257 | bool added = false; |
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| 258 | for ( Expression *& expr : cur ) { |
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| 259 | expr = new AddressExpr( expr ); |
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| 260 | added = true; |
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| 261 | } |
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| 262 | return added; |
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[4d2434a] | 263 | } |
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| 264 | |
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| 265 | namespace { |
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[f9cebb5] | 266 | /// given index i, dimension d, initializer init, and callExpr f, generates |
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| 267 | /// if (i < d) f(..., init) |
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| 268 | /// ++i; |
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| 269 | /// so that only elements within the range of the array are constructed |
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[4d2434a] | 270 | template< typename OutIterator > |
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[f9cebb5] | 271 | void buildCallExpr( UntypedExpr * callExpr, Expression * index, Expression * dimension, Initializer * init, OutIterator out ) { |
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[4d2434a] | 272 | UntypedExpr * cond = new UntypedExpr( new NameExpr( "?<?") ); |
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| 273 | cond->get_args().push_back( index->clone() ); |
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| 274 | cond->get_args().push_back( dimension->clone() ); |
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| 275 | |
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| 276 | std::list< Expression * > args = makeInitList( init ); |
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| 277 | callExpr->get_args().splice( callExpr->get_args().end(), args ); |
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| 278 | |
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[ba3706f] | 279 | *out++ = new IfStmt( cond, new ExprStmt( callExpr ), nullptr ); |
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[4d2434a] | 280 | |
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| 281 | UntypedExpr * increment = new UntypedExpr( new NameExpr( "++?" ) ); |
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[175ad32b] | 282 | increment->get_args().push_back( index->clone() ); |
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[ba3706f] | 283 | *out++ = new ExprStmt( increment ); |
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[4d2434a] | 284 | } |
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| 285 | |
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| 286 | template< typename OutIterator > |
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[b8524ca] | 287 | void build( UntypedExpr * callExpr, InitExpander_old::IndexList::iterator idx, InitExpander_old::IndexList::iterator idxEnd, Initializer * init, OutIterator out ) { |
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[4d2434a] | 288 | if ( idx == idxEnd ) return; |
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| 289 | Expression * index = *idx++; |
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| 290 | assert( idx != idxEnd ); |
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| 291 | Expression * dimension = *idx++; |
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| 292 | |
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[f9cebb5] | 293 | // xxx - may want to eventually issue a warning here if we can detect |
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| 294 | // that the number of elements exceeds to dimension of the array |
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[4d2434a] | 295 | if ( idx == idxEnd ) { |
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| 296 | if ( ListInit * listInit = dynamic_cast< ListInit * >( init ) ) { |
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| 297 | for ( Initializer * init : *listInit ) { |
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[f9cebb5] | 298 | buildCallExpr( callExpr->clone(), index, dimension, init, out ); |
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[4d2434a] | 299 | } |
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| 300 | } else { |
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[f9cebb5] | 301 | buildCallExpr( callExpr->clone(), index, dimension, init, out ); |
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[4d2434a] | 302 | } |
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| 303 | } else { |
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| 304 | std::list< Statement * > branches; |
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| 305 | |
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| 306 | unsigned long cond = 0; |
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| 307 | ListInit * listInit = dynamic_cast< ListInit * >( init ); |
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| 308 | if ( ! listInit ) { |
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| 309 | // xxx - this shouldn't be an error, but need a way to |
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| 310 | // terminate without creating output, so should catch this error |
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[a16764a6] | 311 | SemanticError( init->location, "unbalanced list initializers" ); |
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[4d2434a] | 312 | } |
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[f9cebb5] | 313 | |
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| 314 | static UniqueName targetLabel( "L__autogen__" ); |
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| 315 | Label switchLabel( targetLabel.newName(), 0, std::list< Attribute * >{ new Attribute("unused") } ); |
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[4d2434a] | 316 | for ( Initializer * init : *listInit ) { |
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| 317 | Expression * condition; |
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| 318 | // check for designations |
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| 319 | // if ( init-> ) { |
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| 320 | condition = new ConstantExpr( Constant::from_ulong( cond ) ); |
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| 321 | ++cond; |
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| 322 | // } else { |
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| 323 | // condition = // ... take designation |
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| 324 | // cond = // ... take designation+1 |
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| 325 | // } |
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| 326 | std::list< Statement * > stmts; |
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| 327 | build( callExpr, idx, idxEnd, init, back_inserter( stmts ) ); |
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[ba3706f] | 328 | stmts.push_back( new BranchStmt( switchLabel, BranchStmt::Break ) ); |
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| 329 | CaseStmt * caseStmt = new CaseStmt( condition, stmts ); |
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[4d2434a] | 330 | branches.push_back( caseStmt ); |
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| 331 | } |
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[ba3706f] | 332 | *out++ = new SwitchStmt( index->clone(), branches ); |
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| 333 | *out++ = new NullStmt( { switchLabel } ); |
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[4d2434a] | 334 | } |
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| 335 | } |
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| 336 | } |
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| 337 | |
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| 338 | // if array came with an initializer list: initialize each element |
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| 339 | // may have more initializers than elements in the array - need to check at each index that |
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| 340 | // we haven't exceeded size. |
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| 341 | // may have fewer initializers than elements in the array - need to default construct |
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| 342 | // remaining elements. |
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| 343 | // To accomplish this, generate switch statement, consuming all of expander's elements |
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[b8524ca] | 344 | Statement * InitImpl_old::buildListInit( UntypedExpr * dst, std::list< Expression * > & indices ) { |
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[22bc276] | 345 | if ( ! init ) return nullptr; |
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[ba3706f] | 346 | CompoundStmt * block = new CompoundStmt(); |
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[f9cebb5] | 347 | build( dst, indices.begin(), indices.end(), init, back_inserter( block->get_kids() ) ); |
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| 348 | if ( block->get_kids().empty() ) { |
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| 349 | delete block; |
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[22bc276] | 350 | return nullptr; |
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[4d2434a] | 351 | } else { |
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[22bc276] | 352 | init = nullptr; // init was consumed in creating the list init |
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[f9cebb5] | 353 | return block; |
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[4d2434a] | 354 | } |
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[39f84a4] | 355 | } |
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| 356 | |
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[b8524ca] | 357 | Statement * ExprImpl_old::buildListInit( UntypedExpr *, std::list< Expression * > & ) { |
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[22bc276] | 358 | return nullptr; |
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[4d2434a] | 359 | } |
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| 360 | |
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[b8524ca] | 361 | Statement * InitExpander_old::buildListInit( UntypedExpr * dst ) { |
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[4d2434a] | 362 | return expander->buildListInit( dst, indices ); |
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| 363 | } |
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| 364 | |
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[b8524ca] | 365 | class InitExpander_new::ExpanderImpl { |
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| 366 | public: |
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| 367 | virtual ~ExpanderImpl() = default; |
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| 368 | virtual std::vector< ast::ptr< ast::Expr > > next( IndexList & indices ) = 0; |
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[6f096d2] | 369 | virtual ast::ptr< ast::Stmt > buildListInit( |
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[c1ed2ee] | 370 | ast::UntypedExpr * callExpr, IndexList & indices ) = 0; |
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[b8524ca] | 371 | }; |
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| 372 | |
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| 373 | namespace { |
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[c1ed2ee] | 374 | template< typename Out > |
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[6f096d2] | 375 | void buildCallExpr( |
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| 376 | ast::UntypedExpr * callExpr, const ast::Expr * index, const ast::Expr * dimension, |
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[c1ed2ee] | 377 | const ast::Init * init, Out & out |
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| 378 | ) { |
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| 379 | const CodeLocation & loc = init->location; |
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| 380 | |
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[6f096d2] | 381 | auto cond = new ast::UntypedExpr{ |
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[c1ed2ee] | 382 | loc, new ast::NameExpr{ loc, "?<?" }, { index, dimension } }; |
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[6f096d2] | 383 | |
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[c1ed2ee] | 384 | std::vector< ast::ptr< ast::Expr > > args = makeInitList( init ); |
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| 385 | splice( callExpr->args, args ); |
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| 386 | |
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| 387 | out.emplace_back( new ast::IfStmt{ loc, cond, new ast::ExprStmt{ loc, callExpr } } ); |
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| 388 | |
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[6f096d2] | 389 | out.emplace_back( new ast::ExprStmt{ |
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[c1ed2ee] | 390 | loc, new ast::UntypedExpr{ loc, new ast::NameExpr{ loc, "++?" }, { index } } } ); |
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| 391 | } |
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| 392 | |
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| 393 | template< typename Out > |
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| 394 | void build( |
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[6f096d2] | 395 | ast::UntypedExpr * callExpr, const InitExpander_new::IndexList & indices, |
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[c1ed2ee] | 396 | const ast::Init * init, Out & out |
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| 397 | ) { |
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| 398 | if ( indices.empty() ) return; |
---|
| 399 | |
---|
| 400 | unsigned idx = 0; |
---|
| 401 | |
---|
| 402 | const ast::Expr * index = indices[idx++]; |
---|
| 403 | assert( idx != indices.size() ); |
---|
| 404 | const ast::Expr * dimension = indices[idx++]; |
---|
| 405 | |
---|
| 406 | if ( idx == indices.size() ) { |
---|
| 407 | if ( auto listInit = dynamic_cast< const ast::ListInit * >( init ) ) { |
---|
| 408 | for ( const ast::Init * init : *listInit ) { |
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[16ba4a6f] | 409 | buildCallExpr( shallowCopy(callExpr), index, dimension, init, out ); |
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[c1ed2ee] | 410 | } |
---|
| 411 | } else { |
---|
[16ba4a6f] | 412 | buildCallExpr( shallowCopy(callExpr), index, dimension, init, out ); |
---|
[c1ed2ee] | 413 | } |
---|
| 414 | } else { |
---|
| 415 | const CodeLocation & loc = init->location; |
---|
| 416 | |
---|
| 417 | unsigned long cond = 0; |
---|
| 418 | auto listInit = dynamic_cast< const ast::ListInit * >( init ); |
---|
| 419 | if ( ! listInit ) { SemanticError( loc, "unbalanced list initializers" ); } |
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| 420 | |
---|
| 421 | static UniqueName targetLabel( "L__autogen__" ); |
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[6f096d2] | 422 | ast::Label switchLabel{ |
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[c1ed2ee] | 423 | loc, targetLabel.newName(), { new ast::Attribute{ "unused" } } }; |
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[6f096d2] | 424 | |
---|
[c1ed2ee] | 425 | std::vector< ast::ptr< ast::Stmt > > branches; |
---|
| 426 | for ( const ast::Init * init : *listInit ) { |
---|
| 427 | auto condition = ast::ConstantExpr::from_ulong( loc, cond ); |
---|
| 428 | ++cond; |
---|
| 429 | |
---|
| 430 | std::vector< ast::ptr< ast::Stmt > > stmts; |
---|
| 431 | build( callExpr, indices, init, stmts ); |
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[6f096d2] | 432 | stmts.emplace_back( |
---|
[c1ed2ee] | 433 | new ast::BranchStmt{ loc, ast::BranchStmt::Break, switchLabel } ); |
---|
| 434 | branches.emplace_back( new ast::CaseStmt{ loc, condition, std::move( stmts ) } ); |
---|
| 435 | } |
---|
| 436 | out.emplace_back( new ast::SwitchStmt{ loc, index, std::move( branches ) } ); |
---|
| 437 | out.emplace_back( new ast::NullStmt{ loc, { switchLabel } } ); |
---|
| 438 | } |
---|
| 439 | } |
---|
| 440 | |
---|
[b8524ca] | 441 | class InitImpl_new final : public InitExpander_new::ExpanderImpl { |
---|
| 442 | ast::ptr< ast::Init > init; |
---|
| 443 | public: |
---|
| 444 | InitImpl_new( const ast::Init * i ) : init( i ) {} |
---|
| 445 | |
---|
| 446 | std::vector< ast::ptr< ast::Expr > > next( InitExpander_new::IndexList & ) override { |
---|
| 447 | return makeInitList( init ); |
---|
| 448 | } |
---|
[6f096d2] | 449 | |
---|
| 450 | ast::ptr< ast::Stmt > buildListInit( |
---|
| 451 | ast::UntypedExpr * callExpr, InitExpander_new::IndexList & indices |
---|
[b8524ca] | 452 | ) override { |
---|
[6f096d2] | 453 | // If array came with an initializer list, initialize each element. We may have more |
---|
| 454 | // initializers than elements of the array; need to check at each index that we have |
---|
| 455 | // not exceeded size. We may have fewer initializers than elements in the array; need |
---|
| 456 | // to default-construct remaining elements. To accomplish this, generate switch |
---|
[c1ed2ee] | 457 | // statement consuming all of expander's elements |
---|
| 458 | |
---|
| 459 | if ( ! init ) return {}; |
---|
| 460 | |
---|
| 461 | std::list< ast::ptr< ast::Stmt > > stmts; |
---|
| 462 | build( callExpr, indices, init, stmts ); |
---|
| 463 | if ( stmts.empty() ) { |
---|
| 464 | return {}; |
---|
| 465 | } else { |
---|
| 466 | auto block = new ast::CompoundStmt{ init->location, std::move( stmts ) }; |
---|
| 467 | init = nullptr; // consumed in creating the list init |
---|
| 468 | return block; |
---|
| 469 | } |
---|
[b8524ca] | 470 | } |
---|
| 471 | }; |
---|
| 472 | |
---|
| 473 | class ExprImpl_new final : public InitExpander_new::ExpanderImpl { |
---|
| 474 | ast::ptr< ast::Expr > arg; |
---|
| 475 | public: |
---|
| 476 | ExprImpl_new( const ast::Expr * a ) : arg( a ) {} |
---|
| 477 | |
---|
[6f096d2] | 478 | std::vector< ast::ptr< ast::Expr > > next( |
---|
| 479 | InitExpander_new::IndexList & indices |
---|
[b8524ca] | 480 | ) override { |
---|
[c1ed2ee] | 481 | if ( ! arg ) return {}; |
---|
| 482 | |
---|
| 483 | const CodeLocation & loc = arg->location; |
---|
| 484 | const ast::Expr * expr = arg; |
---|
| 485 | for ( auto it = indices.rbegin(); it != indices.rend(); ++it ) { |
---|
| 486 | // go through indices and layer on subscript exprs ?[?] |
---|
| 487 | ++it; |
---|
[6f096d2] | 488 | expr = new ast::UntypedExpr{ |
---|
[c1ed2ee] | 489 | loc, new ast::NameExpr{ loc, "?[?]" }, { expr, *it } }; |
---|
| 490 | } |
---|
| 491 | return { expr }; |
---|
[b8524ca] | 492 | } |
---|
[6f096d2] | 493 | |
---|
| 494 | ast::ptr< ast::Stmt > buildListInit( |
---|
| 495 | ast::UntypedExpr *, InitExpander_new::IndexList & |
---|
| 496 | ) override { |
---|
[b8524ca] | 497 | return {}; |
---|
| 498 | } |
---|
| 499 | }; |
---|
| 500 | } // anonymous namespace |
---|
| 501 | |
---|
| 502 | InitExpander_new::InitExpander_new( const ast::Init * init ) |
---|
| 503 | : expander( new InitImpl_new{ init } ), crnt(), indices() {} |
---|
| 504 | |
---|
| 505 | InitExpander_new::InitExpander_new( const ast::Expr * expr ) |
---|
| 506 | : expander( new ExprImpl_new{ expr } ), crnt(), indices() {} |
---|
| 507 | |
---|
| 508 | std::vector< ast::ptr< ast::Expr > > InitExpander_new::operator* () { return crnt; } |
---|
| 509 | |
---|
| 510 | InitExpander_new & InitExpander_new::operator++ () { |
---|
| 511 | crnt = expander->next( indices ); |
---|
| 512 | return *this; |
---|
| 513 | } |
---|
| 514 | |
---|
[6f096d2] | 515 | /// builds statement which has the same semantics as a C-style list initializer (for array |
---|
[b8524ca] | 516 | /// initializers) using callExpr as the base expression to perform initialization |
---|
[c1ed2ee] | 517 | ast::ptr< ast::Stmt > InitExpander_new::buildListInit( ast::UntypedExpr * callExpr ) { |
---|
[b8524ca] | 518 | return expander->buildListInit( callExpr, indices ); |
---|
| 519 | } |
---|
| 520 | |
---|
| 521 | void InitExpander_new::addArrayIndex( const ast::Expr * index, const ast::Expr * dimension ) { |
---|
| 522 | indices.emplace_back( index ); |
---|
| 523 | indices.emplace_back( dimension ); |
---|
| 524 | } |
---|
| 525 | |
---|
| 526 | void InitExpander_new::clearArrayIndices() { indices.clear(); } |
---|
| 527 | |
---|
| 528 | bool InitExpander_new::addReference() { |
---|
| 529 | for ( ast::ptr< ast::Expr > & expr : crnt ) { |
---|
| 530 | expr = new ast::AddressExpr{ expr }; |
---|
| 531 | } |
---|
| 532 | return ! crnt.empty(); |
---|
| 533 | } |
---|
| 534 | |
---|
[549c006] | 535 | Type * getTypeofThis( FunctionType * ftype ) { |
---|
| 536 | assertf( ftype, "getTypeofThis: nullptr ftype" ); |
---|
| 537 | ObjectDecl * thisParam = getParamThis( ftype ); |
---|
[7fc7cdb] | 538 | ReferenceType * refType = strict_dynamic_cast< ReferenceType * >( thisParam->type ); |
---|
| 539 | return refType->base; |
---|
| 540 | } |
---|
| 541 | |
---|
[549c006] | 542 | ObjectDecl * getParamThis( FunctionType * ftype ) { |
---|
| 543 | assertf( ftype, "getParamThis: nullptr ftype" ); |
---|
[7fc7cdb] | 544 | auto & params = ftype->parameters; |
---|
[549c006] | 545 | assertf( ! params.empty(), "getParamThis: ftype with 0 parameters: %s", toString( ftype ).c_str() ); |
---|
[7fc7cdb] | 546 | return strict_dynamic_cast< ObjectDecl * >( params.front() ); |
---|
| 547 | } |
---|
| 548 | |
---|
[490fb92e] | 549 | const ast::ObjectDecl * getParamThis(const ast::FunctionDecl * func) { |
---|
| 550 | assertf( func, "getParamThis: nullptr ftype" ); |
---|
| 551 | auto & params = func->params; |
---|
| 552 | assertf( ! params.empty(), "getParamThis: ftype with 0 parameters: %s", toString( func ).c_str()); |
---|
| 553 | return params.front().strict_as<ast::ObjectDecl>(); |
---|
| 554 | } |
---|
| 555 | |
---|
[22bc276] | 556 | bool tryConstruct( DeclarationWithType * dwt ) { |
---|
| 557 | ObjectDecl * objDecl = dynamic_cast< ObjectDecl * >( dwt ); |
---|
| 558 | if ( ! objDecl ) return false; |
---|
[df7a162] | 559 | return (objDecl->get_init() == nullptr || |
---|
[22bc276] | 560 | ( objDecl->get_init() != nullptr && objDecl->get_init()->get_maybeConstructed() )) |
---|
| 561 | && ! objDecl->get_storageClasses().is_extern |
---|
[29bc63e] | 562 | && isConstructable( objDecl->type ); |
---|
| 563 | } |
---|
| 564 | |
---|
| 565 | bool isConstructable( Type * type ) { |
---|
| 566 | return ! dynamic_cast< VarArgsType * >( type ) && ! dynamic_cast< ReferenceType * >( type ) && ! dynamic_cast< FunctionType * >( type ) && ! Tuples::isTtype( type ); |
---|
[64071c2] | 567 | } |
---|
[2b46a13] | 568 | |
---|
[490fb92e] | 569 | bool tryConstruct( const ast::DeclWithType * dwt ) { |
---|
| 570 | auto objDecl = dynamic_cast< const ast::ObjectDecl * >( dwt ); |
---|
| 571 | if ( ! objDecl ) return false; |
---|
| 572 | return (objDecl->init == nullptr || |
---|
| 573 | ( objDecl->init != nullptr && objDecl->init->maybeConstructed )) |
---|
| 574 | && ! objDecl->storage.is_extern |
---|
| 575 | && isConstructable( objDecl->type ); |
---|
| 576 | } |
---|
| 577 | |
---|
| 578 | bool isConstructable( const ast::Type * type ) { |
---|
| 579 | return ! dynamic_cast< const ast::VarArgsType * >( type ) && ! dynamic_cast< const ast::ReferenceType * >( type ) |
---|
| 580 | && ! dynamic_cast< const ast::FunctionType * >( type ) && ! Tuples::isTtype( type ); |
---|
| 581 | } |
---|
| 582 | |
---|
[2d11663] | 583 | struct CallFinder_old { |
---|
| 584 | CallFinder_old( const std::list< std::string > & names ) : names( names ) {} |
---|
[4d2434a] | 585 | |
---|
[0a6aad4] | 586 | void postvisit( ApplicationExpr * appExpr ) { |
---|
[4d2434a] | 587 | handleCallExpr( appExpr ); |
---|
| 588 | } |
---|
| 589 | |
---|
[0a6aad4] | 590 | void postvisit( UntypedExpr * untypedExpr ) { |
---|
[4d2434a] | 591 | handleCallExpr( untypedExpr ); |
---|
| 592 | } |
---|
| 593 | |
---|
| 594 | std::list< Expression * > * matches; |
---|
| 595 | private: |
---|
| 596 | const std::list< std::string > names; |
---|
| 597 | |
---|
| 598 | template< typename CallExpr > |
---|
| 599 | void handleCallExpr( CallExpr * expr ) { |
---|
| 600 | std::string fname = getFunctionName( expr ); |
---|
| 601 | if ( std::find( names.begin(), names.end(), fname ) != names.end() ) { |
---|
| 602 | matches->push_back( expr ); |
---|
[cad355a] | 603 | } |
---|
[64071c2] | 604 | } |
---|
[4d2434a] | 605 | }; |
---|
| 606 | |
---|
[2d11663] | 607 | struct CallFinder_new final { |
---|
[490fb92e] | 608 | std::vector< const ast::Expr * > matches; |
---|
[2d11663] | 609 | const std::vector< std::string > names; |
---|
| 610 | |
---|
| 611 | CallFinder_new( std::vector< std::string > && ns ) : matches(), names( std::move(ns) ) {} |
---|
| 612 | |
---|
| 613 | void handleCallExpr( const ast::Expr * expr ) { |
---|
| 614 | std::string fname = getFunctionName( expr ); |
---|
| 615 | if ( std::find( names.begin(), names.end(), fname ) != names.end() ) { |
---|
| 616 | matches.emplace_back( expr ); |
---|
| 617 | } |
---|
| 618 | } |
---|
| 619 | |
---|
| 620 | void postvisit( const ast::ApplicationExpr * expr ) { handleCallExpr( expr ); } |
---|
| 621 | void postvisit( const ast::UntypedExpr * expr ) { handleCallExpr( expr ); } |
---|
| 622 | }; |
---|
| 623 | |
---|
[4d2434a] | 624 | void collectCtorDtorCalls( Statement * stmt, std::list< Expression * > & matches ) { |
---|
[2d11663] | 625 | static PassVisitor<CallFinder_old> finder( std::list< std::string >{ "?{}", "^?{}" } ); |
---|
[0a6aad4] | 626 | finder.pass.matches = &matches; |
---|
[4d2434a] | 627 | maybeAccept( stmt, finder ); |
---|
[64071c2] | 628 | } |
---|
[4d2434a] | 629 | |
---|
[490fb92e] | 630 | std::vector< const ast::Expr * > collectCtorDtorCalls( const ast::Stmt * stmt ) { |
---|
[2d11663] | 631 | ast::Pass< CallFinder_new > finder{ std::vector< std::string >{ "?{}", "^?{}" } }; |
---|
| 632 | maybe_accept( stmt, finder ); |
---|
[7ff3e522] | 633 | return std::move( finder.core.matches ); |
---|
[2d11663] | 634 | } |
---|
| 635 | |
---|
[4d2434a] | 636 | Expression * getCtorDtorCall( Statement * stmt ) { |
---|
| 637 | std::list< Expression * > matches; |
---|
| 638 | collectCtorDtorCalls( stmt, matches ); |
---|
[20eacb7] | 639 | assertf( matches.size() <= 1, "%zd constructor/destructors found in %s", matches.size(), toString( stmt ).c_str() ); |
---|
[22bc276] | 640 | return matches.size() == 1 ? matches.front() : nullptr; |
---|
[4d2434a] | 641 | } |
---|
| 642 | |
---|
[aedfd91] | 643 | namespace { |
---|
[599b386] | 644 | DeclarationWithType * getCalledFunction( Expression * expr ); |
---|
[d7aa12c] | 645 | const ast::DeclWithType * getCalledFunction( const ast::Expr * expr ); |
---|
[599b386] | 646 | |
---|
| 647 | template<typename CallExpr> |
---|
| 648 | DeclarationWithType * handleDerefCalledFunction( CallExpr * expr ) { |
---|
| 649 | // (*f)(x) => should get "f" |
---|
| 650 | std::string name = getFunctionName( expr ); |
---|
| 651 | assertf( name == "*?", "Unexpected untyped expression: %s", name.c_str() ); |
---|
[b128d3e] | 652 | assertf( ! expr->get_args().empty(), "Cannot get called function from dereference with no arguments" ); |
---|
[599b386] | 653 | return getCalledFunction( expr->get_args().front() ); |
---|
| 654 | } |
---|
| 655 | |
---|
[d7aa12c] | 656 | template<typename CallExpr> |
---|
| 657 | const ast::DeclWithType * handleDerefCalledFunction( const CallExpr * expr ) { |
---|
| 658 | // (*f)(x) => should get "f" |
---|
| 659 | std::string name = getFunctionName( expr ); |
---|
| 660 | assertf( name == "*?", "Unexpected untyped expression: %s", name.c_str() ); |
---|
| 661 | assertf( ! expr->args.empty(), "Cannot get called function from dereference with no arguments" ); |
---|
| 662 | return getCalledFunction( expr->args.front() ); |
---|
| 663 | } |
---|
| 664 | |
---|
| 665 | |
---|
[ee1635c8] | 666 | DeclarationWithType * getCalledFunction( Expression * expr ) { |
---|
| 667 | assert( expr ); |
---|
| 668 | if ( VariableExpr * varExpr = dynamic_cast< VariableExpr * >( expr ) ) { |
---|
[6fc5c14] | 669 | return varExpr->var; |
---|
[ee1635c8] | 670 | } else if ( MemberExpr * memberExpr = dynamic_cast< MemberExpr * >( expr ) ) { |
---|
[6fc5c14] | 671 | return memberExpr->member; |
---|
[ee1635c8] | 672 | } else if ( CastExpr * castExpr = dynamic_cast< CastExpr * >( expr ) ) { |
---|
[6fc5c14] | 673 | return getCalledFunction( castExpr->arg ); |
---|
[599b386] | 674 | } else if ( UntypedExpr * untypedExpr = dynamic_cast< UntypedExpr * >( expr ) ) { |
---|
| 675 | return handleDerefCalledFunction( untypedExpr ); |
---|
| 676 | } else if ( ApplicationExpr * appExpr = dynamic_cast< ApplicationExpr * > ( expr ) ) { |
---|
| 677 | return handleDerefCalledFunction( appExpr ); |
---|
[f3b0a07] | 678 | } else if ( AddressExpr * addrExpr = dynamic_cast< AddressExpr * >( expr ) ) { |
---|
[6fc5c14] | 679 | return getCalledFunction( addrExpr->arg ); |
---|
| 680 | } else if ( CommaExpr * commaExpr = dynamic_cast< CommaExpr * >( expr ) ) { |
---|
| 681 | return getCalledFunction( commaExpr->arg2 ); |
---|
[ee1635c8] | 682 | } |
---|
| 683 | return nullptr; |
---|
[aedfd91] | 684 | } |
---|
[d7aa12c] | 685 | |
---|
| 686 | const ast::DeclWithType * getCalledFunction( const ast::Expr * expr ) { |
---|
| 687 | assert( expr ); |
---|
| 688 | if ( const ast::VariableExpr * varExpr = dynamic_cast< const ast::VariableExpr * >( expr ) ) { |
---|
| 689 | return varExpr->var; |
---|
| 690 | } else if ( const ast::MemberExpr * memberExpr = dynamic_cast< const ast::MemberExpr * >( expr ) ) { |
---|
| 691 | return memberExpr->member; |
---|
| 692 | } else if ( const ast::CastExpr * castExpr = dynamic_cast< const ast::CastExpr * >( expr ) ) { |
---|
| 693 | return getCalledFunction( castExpr->arg ); |
---|
| 694 | } else if ( const ast::UntypedExpr * untypedExpr = dynamic_cast< const ast::UntypedExpr * >( expr ) ) { |
---|
| 695 | return handleDerefCalledFunction( untypedExpr ); |
---|
| 696 | } else if ( const ast::ApplicationExpr * appExpr = dynamic_cast< const ast::ApplicationExpr * > ( expr ) ) { |
---|
| 697 | return handleDerefCalledFunction( appExpr ); |
---|
| 698 | } else if ( const ast::AddressExpr * addrExpr = dynamic_cast< const ast::AddressExpr * >( expr ) ) { |
---|
| 699 | return getCalledFunction( addrExpr->arg ); |
---|
| 700 | } else if ( const ast::CommaExpr * commaExpr = dynamic_cast< const ast::CommaExpr * >( expr ) ) { |
---|
| 701 | return getCalledFunction( commaExpr->arg2 ); |
---|
| 702 | } |
---|
| 703 | return nullptr; |
---|
| 704 | } |
---|
[335d81f] | 705 | |
---|
| 706 | DeclarationWithType * getFunctionCore( const Expression * expr ) { |
---|
| 707 | if ( const auto * appExpr = dynamic_cast< const ApplicationExpr * >( expr ) ) { |
---|
| 708 | return getCalledFunction( appExpr->function ); |
---|
| 709 | } else if ( const auto * untyped = dynamic_cast< const UntypedExpr * >( expr ) ) { |
---|
| 710 | return getCalledFunction( untyped->function ); |
---|
| 711 | } |
---|
| 712 | assertf( false, "getFunction with unknown expression: %s", toString( expr ).c_str() ); |
---|
| 713 | } |
---|
[aedfd91] | 714 | } |
---|
[70f89d00] | 715 | |
---|
[b7b8674] | 716 | DeclarationWithType * getFunction( Expression * expr ) { |
---|
[335d81f] | 717 | return getFunctionCore( expr ); |
---|
| 718 | } |
---|
| 719 | |
---|
| 720 | const DeclarationWithType * getFunction( const Expression * expr ) { |
---|
| 721 | return getFunctionCore( expr ); |
---|
[b7b8674] | 722 | } |
---|
| 723 | |
---|
[d7aa12c] | 724 | const ast::DeclWithType * getFunction( const ast::Expr * expr ) { |
---|
| 725 | if ( const ast::ApplicationExpr * appExpr = dynamic_cast< const ast::ApplicationExpr * >( expr ) ) { |
---|
| 726 | return getCalledFunction( appExpr->func ); |
---|
| 727 | } else if ( const ast::UntypedExpr * untyped = dynamic_cast< const ast::UntypedExpr * > ( expr ) ) { |
---|
| 728 | return getCalledFunction( untyped->func ); |
---|
| 729 | } |
---|
| 730 | assertf( false, "getFunction received unknown expression: %s", toString( expr ).c_str() ); |
---|
| 731 | } |
---|
| 732 | |
---|
[aedfd91] | 733 | ApplicationExpr * isIntrinsicCallExpr( Expression * expr ) { |
---|
| 734 | ApplicationExpr * appExpr = dynamic_cast< ApplicationExpr * >( expr ); |
---|
[22bc276] | 735 | if ( ! appExpr ) return nullptr; |
---|
[ee1635c8] | 736 | DeclarationWithType * function = getCalledFunction( appExpr->get_function() ); |
---|
[f3b0a07] | 737 | assertf( function, "getCalledFunction returned nullptr: %s", toString( appExpr->get_function() ).c_str() ); |
---|
[64071c2] | 738 | // check for Intrinsic only - don't want to remove all overridable ctor/dtors because autogenerated ctor/dtor |
---|
| 739 | // will call all member dtors, and some members may have a user defined dtor. |
---|
[22bc276] | 740 | return function->get_linkage() == LinkageSpec::Intrinsic ? appExpr : nullptr; |
---|
[aedfd91] | 741 | } |
---|
| 742 | |
---|
[2d11663] | 743 | const ast::ApplicationExpr * isIntrinsicCallExpr( const ast::Expr * expr ) { |
---|
| 744 | auto appExpr = dynamic_cast< const ast::ApplicationExpr * >( expr ); |
---|
| 745 | if ( ! appExpr ) return nullptr; |
---|
| 746 | |
---|
| 747 | const ast::DeclWithType * func = getCalledFunction( appExpr->func ); |
---|
[6f096d2] | 748 | assertf( func, |
---|
[2d11663] | 749 | "getCalledFunction returned nullptr: %s", toString( appExpr->func ).c_str() ); |
---|
[6f096d2] | 750 | |
---|
| 751 | // check for Intrinsic only -- don't want to remove all overridable ctor/dtor because |
---|
| 752 | // autogenerated ctor/dtor will call all member dtors, and some members may have a |
---|
[2d11663] | 753 | // user-defined dtor |
---|
| 754 | return func->linkage == ast::Linkage::Intrinsic ? appExpr : nullptr; |
---|
| 755 | } |
---|
| 756 | |
---|
[a465caf] | 757 | namespace { |
---|
| 758 | template <typename Predicate> |
---|
| 759 | bool allofCtorDtor( Statement * stmt, const Predicate & pred ) { |
---|
| 760 | std::list< Expression * > callExprs; |
---|
| 761 | collectCtorDtorCalls( stmt, callExprs ); |
---|
| 762 | // if ( callExprs.empty() ) return false; // xxx - do I still need this check? |
---|
| 763 | return std::all_of( callExprs.begin(), callExprs.end(), pred); |
---|
| 764 | } |
---|
[2d11663] | 765 | |
---|
| 766 | template <typename Predicate> |
---|
| 767 | bool allofCtorDtor( const ast::Stmt * stmt, const Predicate & pred ) { |
---|
[490fb92e] | 768 | std::vector< const ast::Expr * > callExprs = collectCtorDtorCalls( stmt ); |
---|
[2d11663] | 769 | return std::all_of( callExprs.begin(), callExprs.end(), pred ); |
---|
| 770 | } |
---|
[a465caf] | 771 | } |
---|
| 772 | |
---|
[f9cebb5] | 773 | bool isIntrinsicSingleArgCallStmt( Statement * stmt ) { |
---|
[a465caf] | 774 | return allofCtorDtor( stmt, []( Expression * callExpr ){ |
---|
[4d2434a] | 775 | if ( ApplicationExpr * appExpr = isIntrinsicCallExpr( callExpr ) ) { |
---|
[f072892] | 776 | FunctionType *funcType = GenPoly::getFunctionType( appExpr->function->result ); |
---|
[4d2434a] | 777 | assert( funcType ); |
---|
| 778 | return funcType->get_parameters().size() == 1; |
---|
| 779 | } |
---|
| 780 | return false; |
---|
[2d11663] | 781 | }); |
---|
| 782 | } |
---|
| 783 | |
---|
| 784 | bool isIntrinsicSingleArgCallStmt( const ast::Stmt * stmt ) { |
---|
| 785 | return allofCtorDtor( stmt, []( const ast::Expr * callExpr ){ |
---|
| 786 | if ( const ast::ApplicationExpr * appExpr = isIntrinsicCallExpr( callExpr ) ) { |
---|
[6f096d2] | 787 | const ast::FunctionType * funcType = |
---|
[2d11663] | 788 | GenPoly::getFunctionType( appExpr->func->result ); |
---|
| 789 | assert( funcType ); |
---|
| 790 | return funcType->params.size() == 1; |
---|
| 791 | } |
---|
| 792 | return false; |
---|
[4d2434a] | 793 | }); |
---|
[64071c2] | 794 | } |
---|
[f1b1e4c] | 795 | |
---|
[a465caf] | 796 | bool isIntrinsicCallStmt( Statement * stmt ) { |
---|
| 797 | return allofCtorDtor( stmt, []( Expression * callExpr ) { |
---|
| 798 | return isIntrinsicCallExpr( callExpr ); |
---|
| 799 | }); |
---|
| 800 | } |
---|
| 801 | |
---|
[64071c2] | 802 | namespace { |
---|
| 803 | template<typename CallExpr> |
---|
| 804 | Expression *& callArg( CallExpr * callExpr, unsigned int pos ) { |
---|
[a61ad31] | 805 | if ( pos >= callExpr->get_args().size() ) assertf( false, "getCallArg for argument that doesn't exist: (%u); %s.", pos, toString( callExpr ).c_str() ); |
---|
[64071c2] | 806 | for ( Expression *& arg : callExpr->get_args() ) { |
---|
| 807 | if ( pos == 0 ) return arg; |
---|
| 808 | pos--; |
---|
| 809 | } |
---|
| 810 | assert( false ); |
---|
| 811 | } |
---|
[9b4f329] | 812 | |
---|
[b5fed34] | 813 | template<typename CallExpr> |
---|
| 814 | const ast::Expr * callArg( const CallExpr * call, unsigned int pos ) { |
---|
| 815 | if( pos >= call->args.size() ) { |
---|
| 816 | assertf( false, "getCallArg for argument that doesn't exist: (%u); %s.", |
---|
| 817 | pos, toString( call ).c_str() ); |
---|
| 818 | } |
---|
| 819 | for ( const ast::Expr * arg : call->args ) { |
---|
| 820 | if ( pos == 0 ) return arg; |
---|
| 821 | --pos; |
---|
| 822 | } |
---|
| 823 | assert( false ); |
---|
| 824 | } |
---|
[64071c2] | 825 | } |
---|
[f1b1e4c] | 826 | |
---|
[64071c2] | 827 | Expression *& getCallArg( Expression * callExpr, unsigned int pos ) { |
---|
| 828 | if ( ApplicationExpr * appExpr = dynamic_cast< ApplicationExpr * >( callExpr ) ) { |
---|
| 829 | return callArg( appExpr, pos ); |
---|
| 830 | } else if ( UntypedExpr * untypedExpr = dynamic_cast< UntypedExpr * >( callExpr ) ) { |
---|
| 831 | return callArg( untypedExpr, pos ); |
---|
[f3b0a07] | 832 | } else if ( TupleAssignExpr * tupleExpr = dynamic_cast< TupleAssignExpr * > ( callExpr ) ) { |
---|
| 833 | std::list< Statement * > & stmts = tupleExpr->get_stmtExpr()->get_statements()->get_kids(); |
---|
| 834 | assertf( ! stmts.empty(), "TupleAssignExpr somehow has no statements." ); |
---|
[e3e16bc] | 835 | ExprStmt * stmt = strict_dynamic_cast< ExprStmt * >( stmts.back() ); |
---|
| 836 | TupleExpr * tuple = strict_dynamic_cast< TupleExpr * >( stmt->get_expr() ); |
---|
[f3b0a07] | 837 | assertf( ! tuple->get_exprs().empty(), "TupleAssignExpr somehow has empty tuple expr." ); |
---|
| 838 | return getCallArg( tuple->get_exprs().front(), pos ); |
---|
[62a05d1] | 839 | } else if ( ImplicitCopyCtorExpr * copyCtor = dynamic_cast< ImplicitCopyCtorExpr * >( callExpr ) ) { |
---|
| 840 | return getCallArg( copyCtor->callExpr, pos ); |
---|
[64071c2] | 841 | } else { |
---|
[f3b0a07] | 842 | assertf( false, "Unexpected expression type passed to getCallArg: %s", toString( callExpr ).c_str() ); |
---|
[64071c2] | 843 | } |
---|
| 844 | } |
---|
[b5fed34] | 845 | |
---|
[9b4f329] | 846 | const ast::Expr * getCallArg( const ast::Expr * call, unsigned pos ) { |
---|
[b5fed34] | 847 | if ( auto app = dynamic_cast< const ast::ApplicationExpr * >( call ) ) { |
---|
| 848 | return callArg( app, pos ); |
---|
| 849 | } else if ( auto untyped = dynamic_cast< const ast::UntypedExpr * >( call ) ) { |
---|
| 850 | return callArg( untyped, pos ); |
---|
| 851 | } else if ( auto tupleAssn = dynamic_cast< const ast::TupleAssignExpr * >( call ) ) { |
---|
| 852 | const std::list<ast::ptr<ast::Stmt>>& stmts = tupleAssn->stmtExpr->stmts->kids; |
---|
| 853 | assertf( ! stmts.empty(), "TupleAssignExpr missing statements." ); |
---|
| 854 | auto stmt = strict_dynamic_cast< const ast::ExprStmt * >( stmts.back().get() ); |
---|
| 855 | auto tuple = strict_dynamic_cast< const ast::TupleExpr * >( stmt->expr.get() ); |
---|
| 856 | assertf( ! tuple->exprs.empty(), "TupleAssignExpr has empty tuple expr."); |
---|
| 857 | return getCallArg( tuple->exprs.front(), pos ); |
---|
| 858 | } else if ( auto ctor = dynamic_cast< const ast::ImplicitCopyCtorExpr * >( call ) ) { |
---|
| 859 | return getCallArg( ctor->callExpr, pos ); |
---|
| 860 | } else { |
---|
| 861 | assertf( false, "Unexpected expression type passed to getCallArg: %s", |
---|
| 862 | toString( call ).c_str() ); |
---|
| 863 | } |
---|
[9b4f329] | 864 | } |
---|
[f1b1e4c] | 865 | |
---|
[64071c2] | 866 | namespace { |
---|
[599b386] | 867 | std::string funcName( Expression * func ); |
---|
[d7aa12c] | 868 | std::string funcName( const ast::Expr * func ); |
---|
[599b386] | 869 | |
---|
| 870 | template<typename CallExpr> |
---|
| 871 | std::string handleDerefName( CallExpr * expr ) { |
---|
| 872 | // (*f)(x) => should get name "f" |
---|
| 873 | std::string name = getFunctionName( expr ); |
---|
| 874 | assertf( name == "*?", "Unexpected untyped expression: %s", name.c_str() ); |
---|
[b128d3e] | 875 | assertf( ! expr->get_args().empty(), "Cannot get function name from dereference with no arguments" ); |
---|
[599b386] | 876 | return funcName( expr->get_args().front() ); |
---|
| 877 | } |
---|
| 878 | |
---|
[d7aa12c] | 879 | template<typename CallExpr> |
---|
| 880 | std::string handleDerefName( const CallExpr * expr ) { |
---|
| 881 | // (*f)(x) => should get name "f" |
---|
| 882 | std::string name = getFunctionName( expr ); |
---|
| 883 | assertf( name == "*?", "Unexpected untyped expression: %s", name.c_str() ); |
---|
| 884 | assertf( ! expr->args.empty(), "Cannot get function name from dereference with no arguments" ); |
---|
| 885 | return funcName( expr->args.front() ); |
---|
| 886 | } |
---|
| 887 | |
---|
[c738ca4] | 888 | std::string funcName( Expression * func ) { |
---|
[64071c2] | 889 | if ( NameExpr * nameExpr = dynamic_cast< NameExpr * >( func ) ) { |
---|
| 890 | return nameExpr->get_name(); |
---|
| 891 | } else if ( VariableExpr * varExpr = dynamic_cast< VariableExpr * >( func ) ) { |
---|
| 892 | return varExpr->get_var()->get_name(); |
---|
[c738ca4] | 893 | } else if ( CastExpr * castExpr = dynamic_cast< CastExpr * >( func ) ) { |
---|
| 894 | return funcName( castExpr->get_arg() ); |
---|
[ee1635c8] | 895 | } else if ( MemberExpr * memberExpr = dynamic_cast< MemberExpr * >( func ) ) { |
---|
| 896 | return memberExpr->get_member()->get_name(); |
---|
[96a10cd] | 897 | } else if ( UntypedMemberExpr * memberExpr = dynamic_cast< UntypedMemberExpr * > ( func ) ) { |
---|
[fd782b2] | 898 | return funcName( memberExpr->get_member() ); |
---|
[599b386] | 899 | } else if ( UntypedExpr * untypedExpr = dynamic_cast< UntypedExpr * >( func ) ) { |
---|
| 900 | return handleDerefName( untypedExpr ); |
---|
| 901 | } else if ( ApplicationExpr * appExpr = dynamic_cast< ApplicationExpr * >( func ) ) { |
---|
| 902 | return handleDerefName( appExpr ); |
---|
[19a9822] | 903 | } else if ( ConstructorExpr * ctorExpr = dynamic_cast< ConstructorExpr * >( func ) ) { |
---|
| 904 | return funcName( getCallArg( ctorExpr->get_callExpr(), 0 ) ); |
---|
[64071c2] | 905 | } else { |
---|
[19a9822] | 906 | assertf( false, "Unexpected expression type being called as a function in call expression: %s", toString( func ).c_str() ); |
---|
[64071c2] | 907 | } |
---|
| 908 | } |
---|
[d7aa12c] | 909 | |
---|
| 910 | std::string funcName( const ast::Expr * func ) { |
---|
| 911 | if ( const ast::NameExpr * nameExpr = dynamic_cast< const ast::NameExpr * >( func ) ) { |
---|
| 912 | return nameExpr->name; |
---|
| 913 | } else if ( const ast::VariableExpr * varExpr = dynamic_cast< const ast::VariableExpr * >( func ) ) { |
---|
| 914 | return varExpr->var->name; |
---|
| 915 | } else if ( const ast::CastExpr * castExpr = dynamic_cast< const ast::CastExpr * >( func ) ) { |
---|
| 916 | return funcName( castExpr->arg ); |
---|
| 917 | } else if ( const ast::MemberExpr * memberExpr = dynamic_cast< const ast::MemberExpr * >( func ) ) { |
---|
| 918 | return memberExpr->member->name; |
---|
| 919 | } else if ( const ast::UntypedMemberExpr * memberExpr = dynamic_cast< const ast::UntypedMemberExpr * > ( func ) ) { |
---|
| 920 | return funcName( memberExpr->member ); |
---|
| 921 | } else if ( const ast::UntypedExpr * untypedExpr = dynamic_cast< const ast::UntypedExpr * >( func ) ) { |
---|
| 922 | return handleDerefName( untypedExpr ); |
---|
| 923 | } else if ( const ast::ApplicationExpr * appExpr = dynamic_cast< const ast::ApplicationExpr * >( func ) ) { |
---|
| 924 | return handleDerefName( appExpr ); |
---|
| 925 | } else if ( const ast::ConstructorExpr * ctorExpr = dynamic_cast< const ast::ConstructorExpr * >( func ) ) { |
---|
| 926 | return funcName( getCallArg( ctorExpr->callExpr, 0 ) ); |
---|
| 927 | } else { |
---|
| 928 | assertf( false, "Unexpected expression type being called as a function in call expression: %s", toString( func ).c_str() ); |
---|
| 929 | } |
---|
| 930 | } |
---|
[64071c2] | 931 | } |
---|
[70f89d00] | 932 | |
---|
[64071c2] | 933 | std::string getFunctionName( Expression * expr ) { |
---|
[599b386] | 934 | // there's some unforunate overlap here with getCalledFunction. Ideally this would be able to use getCalledFunction and |
---|
| 935 | // return the name of the DeclarationWithType, but this needs to work for NameExpr and UntypedMemberExpr, where getCalledFunction |
---|
| 936 | // can't possibly do anything reasonable. |
---|
[64071c2] | 937 | if ( ApplicationExpr * appExpr = dynamic_cast< ApplicationExpr * >( expr ) ) { |
---|
[c738ca4] | 938 | return funcName( appExpr->get_function() ); |
---|
[64071c2] | 939 | } else if ( UntypedExpr * untypedExpr = dynamic_cast< UntypedExpr * > ( expr ) ) { |
---|
[c738ca4] | 940 | return funcName( untypedExpr->get_function() ); |
---|
[64071c2] | 941 | } else { |
---|
[c738ca4] | 942 | std::cerr << expr << std::endl; |
---|
[d1969a6] | 943 | assertf( false, "Unexpected expression type passed to getFunctionName" ); |
---|
[64071c2] | 944 | } |
---|
| 945 | } |
---|
[10a7775] | 946 | |
---|
[d7aa12c] | 947 | std::string getFunctionName( const ast::Expr * expr ) { |
---|
| 948 | // there's some unforunate overlap here with getCalledFunction. Ideally this would be able to use getCalledFunction and |
---|
| 949 | // return the name of the DeclarationWithType, but this needs to work for NameExpr and UntypedMemberExpr, where getCalledFunction |
---|
| 950 | // can't possibly do anything reasonable. |
---|
| 951 | if ( const ast::ApplicationExpr * appExpr = dynamic_cast< const ast::ApplicationExpr * >( expr ) ) { |
---|
| 952 | return funcName( appExpr->func ); |
---|
| 953 | } else if ( const ast::UntypedExpr * untypedExpr = dynamic_cast< const ast::UntypedExpr * > ( expr ) ) { |
---|
| 954 | return funcName( untypedExpr->func ); |
---|
| 955 | } else { |
---|
| 956 | std::cerr << expr << std::endl; |
---|
| 957 | assertf( false, "Unexpected expression type passed to getFunctionName" ); |
---|
| 958 | } |
---|
| 959 | } |
---|
| 960 | |
---|
[64071c2] | 961 | Type * getPointerBase( Type * type ) { |
---|
| 962 | if ( PointerType * ptrType = dynamic_cast< PointerType * >( type ) ) { |
---|
| 963 | return ptrType->get_base(); |
---|
| 964 | } else if ( ArrayType * arrayType = dynamic_cast< ArrayType * >( type ) ) { |
---|
| 965 | return arrayType->get_base(); |
---|
[ce8c12f] | 966 | } else if ( ReferenceType * refType = dynamic_cast< ReferenceType * >( type ) ) { |
---|
| 967 | return refType->get_base(); |
---|
[64071c2] | 968 | } else { |
---|
[22bc276] | 969 | return nullptr; |
---|
[64071c2] | 970 | } |
---|
| 971 | } |
---|
[9e1d485] | 972 | const ast::Type* getPointerBase( const ast::Type* t ) { |
---|
[b5fed34] | 973 | if ( const auto * p = dynamic_cast< const ast::PointerType * >( t ) ) { |
---|
| 974 | return p->base; |
---|
| 975 | } else if ( const auto * a = dynamic_cast< const ast::ArrayType * >( t ) ) { |
---|
| 976 | return a->base; |
---|
| 977 | } else if ( const auto * r = dynamic_cast< const ast::ReferenceType * >( t ) ) { |
---|
| 978 | return r->base; |
---|
| 979 | } else return nullptr; |
---|
[9e1d485] | 980 | } |
---|
[10a7775] | 981 | |
---|
[64071c2] | 982 | Type * isPointerType( Type * type ) { |
---|
| 983 | if ( getPointerBase( type ) ) return type; |
---|
[22bc276] | 984 | else return nullptr; |
---|
[64071c2] | 985 | } |
---|
[40e636a] | 986 | |
---|
[f5c3b6c] | 987 | ApplicationExpr * createBitwiseAssignment( Expression * dst, Expression * src ) { |
---|
| 988 | static FunctionDecl * assign = nullptr; |
---|
| 989 | if ( ! assign ) { |
---|
| 990 | // temporary? Generate a fake assignment operator to represent bitwise assignments. |
---|
| 991 | // This operator could easily exist as a real function, but it's tricky because nothing should resolve to this function. |
---|
| 992 | TypeDecl * td = new TypeDecl( "T", noStorageClasses, nullptr, TypeDecl::Dtype, true ); |
---|
| 993 | assign = new FunctionDecl( "?=?", noStorageClasses, LinkageSpec::Intrinsic, SymTab::genAssignType( new TypeInstType( noQualifiers, td->name, td ) ), nullptr ); |
---|
| 994 | } |
---|
| 995 | if ( dynamic_cast< ReferenceType * >( dst->result ) ) { |
---|
[5002738] | 996 | for (int depth = dst->result->referenceDepth(); depth > 0; depth--) { |
---|
| 997 | dst = new AddressExpr( dst ); |
---|
| 998 | } |
---|
[f5c3b6c] | 999 | } else { |
---|
| 1000 | dst = new CastExpr( dst, new ReferenceType( noQualifiers, dst->result->clone() ) ); |
---|
| 1001 | } |
---|
| 1002 | if ( dynamic_cast< ReferenceType * >( src->result ) ) { |
---|
[5002738] | 1003 | for (int depth = src->result->referenceDepth(); depth > 0; depth--) { |
---|
| 1004 | src = new AddressExpr( src ); |
---|
| 1005 | } |
---|
[ba89e9b7] | 1006 | // src = new CastExpr( src, new ReferenceType( noQualifiers, src->result->stripReferences()->clone() ) ); |
---|
[f5c3b6c] | 1007 | } |
---|
| 1008 | return new ApplicationExpr( VariableExpr::functionPointer( assign ), { dst, src } ); |
---|
| 1009 | } |
---|
| 1010 | |
---|
[490fb92e] | 1011 | // looks like some other such codegen uses UntypedExpr and does not create fake function. should revisit afterwards |
---|
| 1012 | // following passes may accidentally resolve this expression if returned as untyped... |
---|
| 1013 | ast::Expr * createBitwiseAssignment (const ast::Expr * dst, const ast::Expr * src) { |
---|
| 1014 | static ast::ptr<ast::FunctionDecl> assign = nullptr; |
---|
| 1015 | if (!assign) { |
---|
| 1016 | auto td = new ast::TypeDecl({}, "T", {}, nullptr, ast::TypeDecl::Dtype, true); |
---|
| 1017 | assign = new ast::FunctionDecl({}, "?=?", {}, |
---|
| 1018 | { new ast::ObjectDecl({}, "_dst", new ast::ReferenceType(new ast::TypeInstType("T", td))), |
---|
| 1019 | new ast::ObjectDecl({}, "_src", new ast::TypeInstType("T", td))}, |
---|
| 1020 | { new ast::ObjectDecl({}, "_ret", new ast::TypeInstType("T", td))}, nullptr, {}, ast::Linkage::Intrinsic); |
---|
| 1021 | } |
---|
| 1022 | if (dst->result.as<ast::ReferenceType>()) { |
---|
| 1023 | for (int depth = dst->result->referenceDepth(); depth > 0; depth--) { |
---|
| 1024 | dst = new ast::AddressExpr(dst); |
---|
| 1025 | } |
---|
| 1026 | } |
---|
| 1027 | else { |
---|
| 1028 | dst = new ast::CastExpr(dst, new ast::ReferenceType(dst->result, {})); |
---|
| 1029 | } |
---|
| 1030 | if (src->result.as<ast::ReferenceType>()) { |
---|
| 1031 | for (int depth = src->result->referenceDepth(); depth > 0; depth--) { |
---|
| 1032 | src = new ast::AddressExpr(src); |
---|
| 1033 | } |
---|
| 1034 | } |
---|
| 1035 | return new ast::ApplicationExpr(dst->location, ast::VariableExpr::functionPointer(dst->location, assign), {dst, src}); |
---|
| 1036 | } |
---|
| 1037 | |
---|
[c5f3c68] | 1038 | struct ConstExprChecker : public WithShortCircuiting { |
---|
| 1039 | // most expressions are not const expr |
---|
| 1040 | void previsit( Expression * ) { isConstExpr = false; visit_children = false; } |
---|
[40e636a] | 1041 | |
---|
[c5f3c68] | 1042 | void previsit( AddressExpr *addressExpr ) { |
---|
| 1043 | visit_children = false; |
---|
[65dc863] | 1044 | |
---|
[1ba88a0] | 1045 | // address of a variable or member expression is constexpr |
---|
| 1046 | Expression * arg = addressExpr->get_arg(); |
---|
| 1047 | if ( ! dynamic_cast< NameExpr * >( arg) && ! dynamic_cast< VariableExpr * >( arg ) && ! dynamic_cast< MemberExpr * >( arg ) && ! dynamic_cast< UntypedMemberExpr * >( arg ) ) isConstExpr = false; |
---|
| 1048 | } |
---|
[c5f3c68] | 1049 | |
---|
| 1050 | // these expressions may be const expr, depending on their children |
---|
| 1051 | void previsit( SizeofExpr * ) {} |
---|
| 1052 | void previsit( AlignofExpr * ) {} |
---|
| 1053 | void previsit( UntypedOffsetofExpr * ) {} |
---|
| 1054 | void previsit( OffsetofExpr * ) {} |
---|
| 1055 | void previsit( OffsetPackExpr * ) {} |
---|
| 1056 | void previsit( CommaExpr * ) {} |
---|
| 1057 | void previsit( LogicalExpr * ) {} |
---|
| 1058 | void previsit( ConditionalExpr * ) {} |
---|
| 1059 | void previsit( CastExpr * ) {} |
---|
| 1060 | void previsit( ConstantExpr * ) {} |
---|
| 1061 | |
---|
[caab997] | 1062 | void previsit( VariableExpr * varExpr ) { |
---|
| 1063 | visit_children = false; |
---|
| 1064 | |
---|
| 1065 | if ( EnumInstType * inst = dynamic_cast< EnumInstType * >( varExpr->result ) ) { |
---|
| 1066 | long long int value; |
---|
| 1067 | if ( inst->baseEnum->valueOf( varExpr->var, value ) ) { |
---|
| 1068 | // enumerators are const expr |
---|
| 1069 | return; |
---|
| 1070 | } |
---|
| 1071 | } |
---|
| 1072 | isConstExpr = false; |
---|
| 1073 | } |
---|
| 1074 | |
---|
[c5f3c68] | 1075 | bool isConstExpr = true; |
---|
[40e636a] | 1076 | }; |
---|
| 1077 | |
---|
[16ba4a6f] | 1078 | struct ConstExprChecker_new : public ast::WithShortCircuiting { |
---|
| 1079 | // most expressions are not const expr |
---|
| 1080 | void previsit( const ast::Expr * ) { result = false; visit_children = false; } |
---|
| 1081 | |
---|
| 1082 | void previsit( const ast::AddressExpr *addressExpr ) { |
---|
| 1083 | visit_children = false; |
---|
| 1084 | const ast::Expr * arg = addressExpr->arg; |
---|
| 1085 | |
---|
| 1086 | // address of a variable or member expression is constexpr |
---|
| 1087 | if ( ! dynamic_cast< const ast::NameExpr * >( arg ) |
---|
| 1088 | && ! dynamic_cast< const ast::VariableExpr * >( arg ) |
---|
| 1089 | && ! dynamic_cast< const ast::MemberExpr * >( arg ) |
---|
| 1090 | && ! dynamic_cast< const ast::UntypedMemberExpr * >( arg ) ) result = false; |
---|
| 1091 | } |
---|
| 1092 | |
---|
| 1093 | // these expressions may be const expr, depending on their children |
---|
| 1094 | void previsit( const ast::SizeofExpr * ) {} |
---|
| 1095 | void previsit( const ast::AlignofExpr * ) {} |
---|
| 1096 | void previsit( const ast::UntypedOffsetofExpr * ) {} |
---|
| 1097 | void previsit( const ast::OffsetofExpr * ) {} |
---|
| 1098 | void previsit( const ast::OffsetPackExpr * ) {} |
---|
| 1099 | void previsit( const ast::CommaExpr * ) {} |
---|
| 1100 | void previsit( const ast::LogicalExpr * ) {} |
---|
| 1101 | void previsit( const ast::ConditionalExpr * ) {} |
---|
| 1102 | void previsit( const ast::CastExpr * ) {} |
---|
| 1103 | void previsit( const ast::ConstantExpr * ) {} |
---|
| 1104 | |
---|
| 1105 | void previsit( const ast::VariableExpr * varExpr ) { |
---|
| 1106 | visit_children = false; |
---|
| 1107 | |
---|
| 1108 | if ( auto inst = varExpr->result.as<ast::EnumInstType>() ) { |
---|
| 1109 | long long int value; |
---|
| 1110 | if ( inst->base->valueOf( varExpr->var, value ) ) { |
---|
| 1111 | // enumerators are const expr |
---|
| 1112 | return; |
---|
| 1113 | } |
---|
| 1114 | } |
---|
| 1115 | result = false; |
---|
| 1116 | } |
---|
| 1117 | |
---|
| 1118 | bool result = true; |
---|
| 1119 | }; |
---|
| 1120 | |
---|
[40e636a] | 1121 | bool isConstExpr( Expression * expr ) { |
---|
| 1122 | if ( expr ) { |
---|
[c5f3c68] | 1123 | PassVisitor<ConstExprChecker> checker; |
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[40e636a] | 1124 | expr->accept( checker ); |
---|
[c5f3c68] | 1125 | return checker.pass.isConstExpr; |
---|
[40e636a] | 1126 | } |
---|
| 1127 | return true; |
---|
| 1128 | } |
---|
| 1129 | |
---|
| 1130 | bool isConstExpr( Initializer * init ) { |
---|
| 1131 | if ( init ) { |
---|
[c5f3c68] | 1132 | PassVisitor<ConstExprChecker> checker; |
---|
[40e636a] | 1133 | init->accept( checker ); |
---|
[c5f3c68] | 1134 | return checker.pass.isConstExpr; |
---|
[40e636a] | 1135 | } // if |
---|
| 1136 | // for all intents and purposes, no initializer means const expr |
---|
| 1137 | return true; |
---|
| 1138 | } |
---|
| 1139 | |
---|
[16ba4a6f] | 1140 | bool isConstExpr( const ast::Expr * expr ) { |
---|
| 1141 | if ( expr ) { |
---|
| 1142 | ast::Pass<ConstExprChecker_new> checker; |
---|
| 1143 | expr->accept( checker ); |
---|
| 1144 | return checker.core.result; |
---|
| 1145 | } |
---|
| 1146 | return true; |
---|
| 1147 | } |
---|
| 1148 | |
---|
| 1149 | bool isConstExpr( const ast::Init * init ) { |
---|
| 1150 | if ( init ) { |
---|
| 1151 | ast::Pass<ConstExprChecker_new> checker; |
---|
| 1152 | init->accept( checker ); |
---|
| 1153 | return checker.core.result; |
---|
| 1154 | } // if |
---|
| 1155 | // for all intents and purposes, no initializer means const expr |
---|
| 1156 | return true; |
---|
| 1157 | } |
---|
| 1158 | |
---|
[79970ed] | 1159 | bool isConstructor( const std::string & str ) { return str == "?{}"; } |
---|
| 1160 | bool isDestructor( const std::string & str ) { return str == "^?{}"; } |
---|
[ee1635c8] | 1161 | bool isAssignment( const std::string & str ) { return str == "?=?"; } |
---|
[79970ed] | 1162 | bool isCtorDtor( const std::string & str ) { return isConstructor( str ) || isDestructor( str ); } |
---|
[ee1635c8] | 1163 | bool isCtorDtorAssign( const std::string & str ) { return isCtorDtor( str ) || isAssignment( str ); } |
---|
[4d4882a] | 1164 | |
---|
[6f096d2] | 1165 | const FunctionDecl * isCopyFunction( const Declaration * decl, const std::string & fname ) { |
---|
| 1166 | const FunctionDecl * function = dynamic_cast< const FunctionDecl * >( decl ); |
---|
[0a267c1] | 1167 | if ( ! function ) return nullptr; |
---|
| 1168 | if ( function->name != fname ) return nullptr; |
---|
| 1169 | FunctionType * ftype = function->type; |
---|
| 1170 | if ( ftype->parameters.size() != 2 ) return nullptr; |
---|
[4d4882a] | 1171 | |
---|
[ce8c12f] | 1172 | Type * t1 = getPointerBase( ftype->get_parameters().front()->get_type() ); |
---|
[0a267c1] | 1173 | Type * t2 = ftype->parameters.back()->get_type(); |
---|
[ce8c12f] | 1174 | assert( t1 ); |
---|
[4d4882a] | 1175 | |
---|
[ce8c12f] | 1176 | if ( ResolvExpr::typesCompatibleIgnoreQualifiers( t1, t2, SymTab::Indexer() ) ) { |
---|
[4d4882a] | 1177 | return function; |
---|
| 1178 | } else { |
---|
[ee1635c8] | 1179 | return nullptr; |
---|
[4d4882a] | 1180 | } |
---|
| 1181 | } |
---|
[ee1635c8] | 1182 | |
---|
[d76c588] | 1183 | bool isCopyFunction( const ast::FunctionDecl * decl ) { |
---|
| 1184 | const ast::FunctionType * ftype = decl->type; |
---|
| 1185 | if ( ftype->params.size() != 2 ) return false; |
---|
| 1186 | |
---|
[954c954] | 1187 | const ast::Type * t1 = getPointerBase( ftype->params.front() ); |
---|
[d76c588] | 1188 | if ( ! t1 ) return false; |
---|
[954c954] | 1189 | const ast::Type * t2 = ftype->params.back(); |
---|
[6f096d2] | 1190 | |
---|
[d76c588] | 1191 | return ResolvExpr::typesCompatibleIgnoreQualifiers( t1, t2, ast::SymbolTable{} ); |
---|
| 1192 | } |
---|
| 1193 | |
---|
[6f096d2] | 1194 | const FunctionDecl * isAssignment( const Declaration * decl ) { |
---|
[207c7e1d] | 1195 | return isCopyFunction( decl, "?=?" ); |
---|
| 1196 | } |
---|
[6f096d2] | 1197 | const FunctionDecl * isDestructor( const Declaration * decl ) { |
---|
| 1198 | if ( isDestructor( decl->name ) ) { |
---|
| 1199 | return dynamic_cast< const FunctionDecl * >( decl ); |
---|
[207c7e1d] | 1200 | } |
---|
| 1201 | return nullptr; |
---|
| 1202 | } |
---|
[6f096d2] | 1203 | const FunctionDecl * isDefaultConstructor( const Declaration * decl ) { |
---|
[0a267c1] | 1204 | if ( isConstructor( decl->name ) ) { |
---|
[6f096d2] | 1205 | if ( const FunctionDecl * func = dynamic_cast< const FunctionDecl * >( decl ) ) { |
---|
[0a267c1] | 1206 | if ( func->type->parameters.size() == 1 ) { |
---|
[207c7e1d] | 1207 | return func; |
---|
| 1208 | } |
---|
| 1209 | } |
---|
| 1210 | } |
---|
| 1211 | return nullptr; |
---|
| 1212 | } |
---|
[6f096d2] | 1213 | const FunctionDecl * isCopyConstructor( const Declaration * decl ) { |
---|
[ee1635c8] | 1214 | return isCopyFunction( decl, "?{}" ); |
---|
| 1215 | } |
---|
[f1791a4] | 1216 | |
---|
| 1217 | void addDataSectonAttribute( ObjectDecl * objDecl ) { |
---|
| 1218 | Type *strLitT = new PointerType( Type::Qualifiers( ), |
---|
| 1219 | new BasicType( Type::Qualifiers( ), BasicType::Char ) ); |
---|
| 1220 | std::list< Expression * > attr_params; |
---|
| 1221 | attr_params.push_back( |
---|
| 1222 | new ConstantExpr( Constant( strLitT, "\".data#\"", std::nullopt ) ) ); |
---|
| 1223 | objDecl->attributes.push_back(new Attribute("section", attr_params)); |
---|
| 1224 | } |
---|
| 1225 | |
---|
[7d651a6] | 1226 | void addDataSectionAttribute( ast::ObjectDecl * objDecl ) { |
---|
| 1227 | auto strLitT = new ast::PointerType(new ast::BasicType(ast::BasicType::Char)); |
---|
| 1228 | objDecl->attributes.push_back(new ast::Attribute("section", {new ast::ConstantExpr(objDecl->location, strLitT, "\".data#\"", std::nullopt)})); |
---|
| 1229 | } |
---|
| 1230 | |
---|
[2b46a13] | 1231 | } |
---|