[972e6f7] | 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 | // Autogen.cc -- |
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| 8 | // |
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| 9 | // Author : Rob Schluntz |
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| 10 | // Created On : Thu Mar 03 15:45:56 2016 |
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[4e06c1e] | 11 | // Last Modified By : Peter A. Buhr |
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| 12 | // Last Modified On : Tue Jul 12 17:47:17 2016 |
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| 13 | // Update Count : 2 |
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[972e6f7] | 14 | // |
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| 15 | |
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| 16 | #include <list> |
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| 17 | #include <iterator> |
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| 18 | #include "SynTree/Visitor.h" |
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| 19 | #include "SynTree/Type.h" |
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| 20 | #include "SynTree/Statement.h" |
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| 21 | #include "SynTree/TypeSubstitution.h" |
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| 22 | #include "Common/utility.h" |
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| 23 | #include "AddVisit.h" |
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| 24 | #include "MakeLibCfa.h" |
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| 25 | #include "Autogen.h" |
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| 26 | |
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| 27 | namespace SymTab { |
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[5f98ce5] | 28 | Type * SizeType = 0; |
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| 29 | |
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[972e6f7] | 30 | class AutogenerateRoutines : public Visitor { |
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| 31 | public: |
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| 32 | std::list< Declaration * > &get_declsToAdd() { return declsToAdd; } |
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| 33 | |
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| 34 | virtual void visit( EnumDecl *enumDecl ); |
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| 35 | virtual void visit( StructDecl *structDecl ); |
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| 36 | virtual void visit( UnionDecl *structDecl ); |
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| 37 | virtual void visit( TypeDecl *typeDecl ); |
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[a5a71d0] | 38 | virtual void visit( TraitDecl *ctxDecl ); |
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[972e6f7] | 39 | virtual void visit( FunctionDecl *functionDecl ); |
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| 40 | |
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| 41 | virtual void visit( FunctionType *ftype ); |
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| 42 | virtual void visit( PointerType *ftype ); |
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| 43 | |
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| 44 | virtual void visit( CompoundStmt *compoundStmt ); |
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| 45 | virtual void visit( SwitchStmt *switchStmt ); |
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| 46 | |
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| 47 | AutogenerateRoutines() : functionNesting( 0 ) {} |
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| 48 | private: |
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| 49 | template< typename StmtClass > void visitStatement( StmtClass *stmt ); |
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| 50 | |
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| 51 | std::list< Declaration * > declsToAdd; |
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| 52 | std::set< std::string > structsDone; |
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| 53 | unsigned int functionNesting; // current level of nested functions |
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| 54 | }; |
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| 55 | |
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| 56 | void autogenerateRoutines( std::list< Declaration * > &translationUnit ) { |
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| 57 | AutogenerateRoutines visitor; |
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| 58 | acceptAndAdd( translationUnit, visitor, false ); |
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| 59 | } |
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| 60 | |
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[356189a] | 61 | bool isUnnamedBitfield( ObjectDecl * obj ) { |
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| 62 | return obj != NULL && obj->get_name() == "" && obj->get_bitfieldWidth() != NULL; |
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| 63 | } |
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| 64 | |
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[972e6f7] | 65 | template< typename OutputIterator > |
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[9b4c936] | 66 | void makeUnionFieldsAssignment( ObjectDecl *srcParam, ObjectDecl *dstParam, OutputIterator out ) { |
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[972e6f7] | 67 | UntypedExpr *copy = new UntypedExpr( new NameExpr( "__builtin_memcpy" ) ); |
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| 68 | copy->get_args().push_back( new VariableExpr( dstParam ) ); |
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| 69 | copy->get_args().push_back( new AddressExpr( new VariableExpr( srcParam ) ) ); |
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[a465caf] | 70 | copy->get_args().push_back( new SizeofExpr( srcParam->get_type()->clone() ) ); |
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[972e6f7] | 71 | |
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| 72 | *out++ = new ExprStmt( noLabels, copy ); |
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| 73 | } |
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| 74 | |
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| 75 | //E ?=?(E volatile*, int), |
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| 76 | // ?=?(E _Atomic volatile*, int); |
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[4cc4286] | 77 | void makeEnumFunctions( EnumDecl *enumDecl, EnumInstType *refType, unsigned int functionNesting, std::list< Declaration * > &declsToAdd ) { |
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[972e6f7] | 78 | FunctionType *assignType = new FunctionType( Type::Qualifiers(), false ); |
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| 79 | |
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[d0f8b19] | 80 | ObjectDecl *dstParam = new ObjectDecl( "_dst", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, new PointerType( Type::Qualifiers(), refType ), 0 ); |
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[972e6f7] | 81 | assignType->get_parameters().push_back( dstParam ); |
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| 82 | |
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[d0f8b19] | 83 | // void ?{}(E *); void ^?{}(E *); |
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| 84 | FunctionType * ctorType = assignType->clone(); |
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| 85 | FunctionType * dtorType = assignType->clone(); |
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| 86 | |
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| 87 | ObjectDecl *srcParam = new ObjectDecl( "_src", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, refType->clone(), 0 ); |
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[972e6f7] | 88 | assignType->get_parameters().push_back( srcParam ); |
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[d0f8b19] | 89 | // void ?{}(E *, E); |
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| 90 | FunctionType *copyCtorType = assignType->clone(); |
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| 91 | |
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| 92 | // T ?=?(E *, E); |
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| 93 | ObjectDecl *returnVal = new ObjectDecl( "", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, refType->clone(), 0 ); |
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| 94 | assignType->get_returnVals().push_back( returnVal ); |
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[972e6f7] | 95 | |
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[d0f8b19] | 96 | // xxx - should we also generate void ?{}(E *, int) and E ?{}(E *, E)? |
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| 97 | // right now these cases work, but that might change. |
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[972e6f7] | 98 | |
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| 99 | // Routines at global scope marked "static" to prevent multiple definitions is separate translation units |
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| 100 | // because each unit generates copies of the default routines for each aggregate. |
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[d0f8b19] | 101 | // xxx - Temporary: make these functions intrinsic so they codegen as C assignment. |
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| 102 | // Really they're something of a cross between instrinsic and autogen, so should |
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| 103 | // probably make a new linkage type |
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| 104 | FunctionDecl *assignDecl = new FunctionDecl( "?=?", functionNesting > 0 ? DeclarationNode::NoStorageClass : DeclarationNode::Static, LinkageSpec::Intrinsic, assignType, new CompoundStmt( noLabels ), true, false ); |
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| 105 | FunctionDecl *ctorDecl = new FunctionDecl( "?{}", functionNesting > 0 ? DeclarationNode::NoStorageClass : DeclarationNode::Static, LinkageSpec::Intrinsic, ctorType, new CompoundStmt( noLabels ), true, false ); |
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| 106 | FunctionDecl *copyCtorDecl = new FunctionDecl( "?{}", functionNesting > 0 ? DeclarationNode::NoStorageClass : DeclarationNode::Static, LinkageSpec::Intrinsic, copyCtorType, new CompoundStmt( noLabels ), true, false ); |
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| 107 | FunctionDecl *dtorDecl = new FunctionDecl( "^?{}", functionNesting > 0 ? DeclarationNode::NoStorageClass : DeclarationNode::Static, LinkageSpec::Intrinsic, dtorType, new CompoundStmt( noLabels ), true, false ); |
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[972e6f7] | 108 | assignDecl->fixUniqueId(); |
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[d0f8b19] | 109 | ctorDecl->fixUniqueId(); |
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| 110 | copyCtorDecl->fixUniqueId(); |
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| 111 | dtorDecl->fixUniqueId(); |
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| 112 | |
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| 113 | // enum copy construct and assignment is just C-style assignment. |
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| 114 | // this looks like a bad recursive call, but code gen will turn it into |
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| 115 | // a C-style assignment. |
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| 116 | // This happens before function pointer type conversion, so need to do it manually here |
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| 117 | VariableExpr * assignVarExpr = new VariableExpr( assignDecl ); |
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[906e24d] | 118 | Type * assignVarExprType = assignVarExpr->get_result(); |
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[d0f8b19] | 119 | assignVarExprType = new PointerType( Type::Qualifiers(), assignVarExprType ); |
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[906e24d] | 120 | assignVarExpr->set_result( assignVarExprType ); |
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[d0f8b19] | 121 | ApplicationExpr * assignExpr = new ApplicationExpr( assignVarExpr ); |
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| 122 | assignExpr->get_args().push_back( new VariableExpr( dstParam ) ); |
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| 123 | assignExpr->get_args().push_back( new VariableExpr( srcParam ) ); |
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| 124 | |
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| 125 | // body is either return stmt or expr stmt |
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| 126 | assignDecl->get_statements()->get_kids().push_back( new ReturnStmt( noLabels, assignExpr ) ); |
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| 127 | copyCtorDecl->get_statements()->get_kids().push_back( new ExprStmt( noLabels, assignExpr->clone() ) ); |
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| 128 | |
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| 129 | declsToAdd.push_back( assignDecl ); |
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| 130 | declsToAdd.push_back( ctorDecl ); |
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| 131 | declsToAdd.push_back( copyCtorDecl ); |
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| 132 | declsToAdd.push_back( dtorDecl ); |
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[972e6f7] | 133 | } |
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| 134 | |
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| 135 | /// Clones a reference type, replacing any parameters it may have with a clone of the provided list |
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| 136 | template< typename GenericInstType > |
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| 137 | GenericInstType *cloneWithParams( GenericInstType *refType, const std::list< Expression* >& params ) { |
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| 138 | GenericInstType *clone = refType->clone(); |
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| 139 | clone->get_parameters().clear(); |
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| 140 | cloneAll( params, clone->get_parameters() ); |
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| 141 | return clone; |
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| 142 | } |
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| 143 | |
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[d8ba086] | 144 | /// Creates a new type decl that's the same as src, but renamed and with only the ?=?, ?{} (default and copy), and ^?{} assertions (for complete types only) |
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[972e6f7] | 145 | TypeDecl *cloneAndRename( TypeDecl *src, const std::string &name ) { |
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[9554d9b] | 146 | // TypeDecl *dst = new TypeDecl( name, src->get_storageClass(), 0, src->get_kind() ); |
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| 147 | |
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| 148 | // if ( src->get_kind() == TypeDecl::Any ) { |
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| 149 | // TypeInstType *opParamType = new TypeInstType( Type::Qualifiers(), name, dst ); |
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| 150 | // FunctionType *opFunctionType = new FunctionType( Type::Qualifiers(), false ); |
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| 151 | // opFunctionType->get_parameters().push_back( |
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| 152 | // new ObjectDecl( "", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, new PointerType( Type::Qualifiers(), opParamType->clone() ), 0 ) ); |
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| 153 | // FunctionDecl *ctorAssert = new FunctionDecl( "?{}", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, opFunctionType->clone(), 0, false, false ); |
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| 154 | // FunctionDecl *dtorAssert = new FunctionDecl( "^?{}", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, opFunctionType->clone(), 0, false, false ); |
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| 155 | |
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| 156 | // opFunctionType->get_parameters().push_back( |
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| 157 | // new ObjectDecl( "", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, opParamType, 0 ) ); |
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| 158 | // FunctionDecl *copyCtorAssert = new FunctionDecl( "?{}", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, opFunctionType->clone(), 0, false, false ); |
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| 159 | |
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| 160 | // opFunctionType->get_returnVals().push_back( |
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| 161 | // new ObjectDecl( "", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, opParamType->clone(), 0 ) ); |
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| 162 | // FunctionDecl *assignAssert = new FunctionDecl( "?=?", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, opFunctionType, 0, false, false ); |
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| 163 | |
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| 164 | |
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| 165 | // dst->get_assertions().push_back( assignAssert ); |
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| 166 | // dst->get_assertions().push_back( ctorAssert ); |
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| 167 | // dst->get_assertions().push_back( dtorAssert ); |
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| 168 | // dst->get_assertions().push_back( copyCtorAssert ); |
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| 169 | // } |
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| 170 | |
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[2e3a379] | 171 | TypeDecl *dst = new TypeDecl( src->get_name(), src->get_storageClass(), 0, src->get_kind() ); |
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| 172 | cloneAll(src->get_assertions(), dst->get_assertions()); |
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[972e6f7] | 173 | return dst; |
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| 174 | } |
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| 175 | |
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[a2f920f] | 176 | void makeStructMemberOp( ObjectDecl * dstParam, Expression * src, DeclarationWithType * field, FunctionDecl * func, TypeSubstitution & genericSubs, bool isDynamicLayout, bool forward = true ) { |
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[3bb195cb] | 177 | // if ( isDynamicLayout && src ) { |
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| 178 | // genericSubs.apply( src ); |
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| 179 | // } |
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[dac0aa9] | 180 | |
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| 181 | ObjectDecl * returnVal = NULL; |
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| 182 | if ( ! func->get_functionType()->get_returnVals().empty() ) { |
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| 183 | returnVal = dynamic_cast<ObjectDecl*>( func->get_functionType()->get_returnVals().front() ); |
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| 184 | } |
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| 185 | |
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[39f84a4] | 186 | InitTweak::InitExpander srcParam( src ); |
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| 187 | |
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[dac0aa9] | 188 | // assign to destination (and return value if generic) |
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[2be1023] | 189 | UntypedExpr *derefExpr = new UntypedExpr( new NameExpr( "*?" ) ); |
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| 190 | derefExpr->get_args().push_back( new VariableExpr( dstParam ) ); |
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| 191 | Expression *dstselect = new MemberExpr( field, derefExpr ); |
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[39f84a4] | 192 | genImplicitCall( srcParam, dstselect, func->get_name(), back_inserter( func->get_statements()->get_kids() ), field, forward ); |
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[2be1023] | 193 | |
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[c331406] | 194 | if ( isDynamicLayout && returnVal ) { |
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[2be1023] | 195 | UntypedExpr *derefRet = new UntypedExpr( new NameExpr( "*?" ) ); |
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| 196 | derefRet->get_args().push_back( new VariableExpr( returnVal ) ); |
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| 197 | Expression *retselect = new MemberExpr( field, derefRet ); |
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[39f84a4] | 198 | genImplicitCall( srcParam, retselect, func->get_name(), back_inserter( func->get_statements()->get_kids() ), field, forward ); |
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[dac0aa9] | 199 | } // if |
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| 200 | } |
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| 201 | |
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[972e6f7] | 202 | template<typename Iterator> |
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[a2f920f] | 203 | void makeStructFunctionBody( Iterator member, Iterator end, FunctionDecl * func, TypeSubstitution & genericSubs, bool isDynamicLayout, bool forward = true ) { |
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[972e6f7] | 204 | for ( ; member != end; ++member ) { |
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[dac0aa9] | 205 | if ( DeclarationWithType *field = dynamic_cast< DeclarationWithType * >( *member ) ) { // otherwise some form of type declaration, e.g. Aggregate |
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[972e6f7] | 206 | // query the type qualifiers of this field and skip assigning it if it is marked const. |
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| 207 | // If it is an array type, we need to strip off the array layers to find its qualifiers. |
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[dac0aa9] | 208 | Type * type = field->get_type(); |
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[972e6f7] | 209 | while ( ArrayType * at = dynamic_cast< ArrayType * >( type ) ) { |
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| 210 | type = at->get_base(); |
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| 211 | } |
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| 212 | |
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[cad355a] | 213 | if ( type->get_qualifiers().isConst && func->get_name() == "?=?" ) { |
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| 214 | // don't assign const members, but do construct/destruct |
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[972e6f7] | 215 | continue; |
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| 216 | } |
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| 217 | |
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[fb24492] | 218 | if ( field->get_name() == "" ) { |
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| 219 | // don't assign to anonymous members |
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| 220 | // xxx - this is a temporary fix. Anonymous members tie into |
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| 221 | // our inheritance model. I think the correct way to handle this is to |
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| 222 | // cast the structure to the type of the member and let the resolver |
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| 223 | // figure out whether it's valid and have a pass afterwards that fixes |
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| 224 | // the assignment to use pointer arithmetic with the offset of the |
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| 225 | // member, much like how generic type members are handled. |
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| 226 | continue; |
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| 227 | } |
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| 228 | |
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[972e6f7] | 229 | assert( ! func->get_functionType()->get_parameters().empty() ); |
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| 230 | ObjectDecl * dstParam = dynamic_cast<ObjectDecl*>( func->get_functionType()->get_parameters().front() ); |
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| 231 | ObjectDecl * srcParam = NULL; |
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| 232 | if ( func->get_functionType()->get_parameters().size() == 2 ) { |
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| 233 | srcParam = dynamic_cast<ObjectDecl*>( func->get_functionType()->get_parameters().back() ); |
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| 234 | } |
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| 235 | // srcParam may be NULL, in which case we have default ctor/dtor |
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| 236 | assert( dstParam ); |
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| 237 | |
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[dac0aa9] | 238 | Expression *srcselect = srcParam ? new MemberExpr( field, new VariableExpr( srcParam ) ) : NULL; |
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[a2f920f] | 239 | makeStructMemberOp( dstParam, srcselect, field, func, genericSubs, isDynamicLayout, forward ); |
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[972e6f7] | 240 | } // if |
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| 241 | } // for |
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| 242 | } // makeStructFunctionBody |
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| 243 | |
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[dac0aa9] | 244 | /// generate the body of a constructor which takes parameters that match fields, e.g. |
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| 245 | /// void ?{}(A *, int) and void?{}(A *, int, int) for a struct A which has two int fields. |
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| 246 | template<typename Iterator> |
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[a2f920f] | 247 | void makeStructFieldCtorBody( Iterator member, Iterator end, FunctionDecl * func, TypeSubstitution & genericSubs, bool isDynamicLayout ) { |
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[dac0aa9] | 248 | FunctionType * ftype = func->get_functionType(); |
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| 249 | std::list<DeclarationWithType*> & params = ftype->get_parameters(); |
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| 250 | assert( params.size() >= 2 ); // should not call this function for default ctor, etc. |
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| 251 | |
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| 252 | // skip 'this' parameter |
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| 253 | ObjectDecl * dstParam = dynamic_cast<ObjectDecl*>( params.front() ); |
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| 254 | assert( dstParam ); |
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| 255 | std::list<DeclarationWithType*>::iterator parameter = params.begin()+1; |
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| 256 | for ( ; member != end; ++member ) { |
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| 257 | if ( DeclarationWithType * field = dynamic_cast<DeclarationWithType*>( *member ) ) { |
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[0b4d93ab] | 258 | if ( isUnnamedBitfield( dynamic_cast< ObjectDecl * > ( field ) ) ) { |
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| 259 | // don't make a function whose parameter is an unnamed bitfield |
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| 260 | continue; |
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| 261 | } else if ( field->get_name() == "" ) { |
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| 262 | // don't assign to anonymous members |
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| 263 | // xxx - this is a temporary fix. Anonymous members tie into |
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| 264 | // our inheritance model. I think the correct way to handle this is to |
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| 265 | // cast the structure to the type of the member and let the resolver |
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| 266 | // figure out whether it's valid and have a pass afterwards that fixes |
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| 267 | // the assignment to use pointer arithmetic with the offset of the |
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| 268 | // member, much like how generic type members are handled. |
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| 269 | continue; |
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| 270 | } else if ( parameter != params.end() ) { |
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[dac0aa9] | 271 | // matching parameter, initialize field with copy ctor |
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| 272 | Expression *srcselect = new VariableExpr(*parameter); |
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[a2f920f] | 273 | makeStructMemberOp( dstParam, srcselect, field, func, genericSubs, isDynamicLayout ); |
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[dac0aa9] | 274 | ++parameter; |
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| 275 | } else { |
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| 276 | // no matching parameter, initialize field with default ctor |
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[a2f920f] | 277 | makeStructMemberOp( dstParam, NULL, field, func, genericSubs, isDynamicLayout ); |
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[dac0aa9] | 278 | } |
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| 279 | } |
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| 280 | } |
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| 281 | } |
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| 282 | |
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[9f70ab57] | 283 | void addForwardDecl( FunctionDecl * functionDecl, std::list< Declaration * > & declsToAdd ) { |
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| 284 | FunctionDecl * decl = functionDecl->clone(); |
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| 285 | delete decl->get_statements(); |
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| 286 | decl->set_statements( NULL ); |
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| 287 | declsToAdd.push_back( decl ); |
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| 288 | decl->fixUniqueId(); |
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| 289 | } |
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| 290 | |
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[972e6f7] | 291 | void makeStructFunctions( StructDecl *aggregateDecl, StructInstType *refType, unsigned int functionNesting, std::list< Declaration * > & declsToAdd ) { |
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| 292 | FunctionType *assignType = new FunctionType( Type::Qualifiers(), false ); |
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| 293 | |
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| 294 | // Make function polymorphic in same parameters as generic struct, if applicable |
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[a2f920f] | 295 | bool isDynamicLayout = false; // NOTE this flag is an incredibly ugly kludge; we should fix the assignment signature instead (ditto for union) |
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[972e6f7] | 296 | std::list< TypeDecl* >& genericParams = aggregateDecl->get_parameters(); |
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| 297 | std::list< Expression* > structParams; // List of matching parameters to put on types |
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| 298 | TypeSubstitution genericSubs; // Substitutions to make to member types of struct |
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| 299 | for ( std::list< TypeDecl* >::const_iterator param = genericParams.begin(); param != genericParams.end(); ++param ) { |
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[5070fe4] | 300 | if ( (*param)->get_kind() == TypeDecl::Any ) isDynamicLayout = true; |
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[972e6f7] | 301 | TypeDecl *typeParam = cloneAndRename( *param, "_autoassign_" + aggregateDecl->get_name() + "_" + (*param)->get_name() ); |
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| 302 | assignType->get_forall().push_back( typeParam ); |
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| 303 | TypeInstType *newParamType = new TypeInstType( Type::Qualifiers(), typeParam->get_name(), typeParam ); |
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| 304 | genericSubs.add( (*param)->get_name(), newParamType ); |
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| 305 | structParams.push_back( new TypeExpr( newParamType ) ); |
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| 306 | } |
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| 307 | |
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| 308 | ObjectDecl *dstParam = new ObjectDecl( "_dst", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, new PointerType( Type::Qualifiers(), cloneWithParams( refType, structParams ) ), 0 ); |
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| 309 | assignType->get_parameters().push_back( dstParam ); |
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| 310 | |
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| 311 | // void ?{}(T *); void ^?{}(T *); |
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| 312 | FunctionType *ctorType = assignType->clone(); |
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| 313 | FunctionType *dtorType = assignType->clone(); |
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| 314 | |
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| 315 | ObjectDecl *srcParam = new ObjectDecl( "_src", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, cloneWithParams( refType, structParams ), 0 ); |
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| 316 | assignType->get_parameters().push_back( srcParam ); |
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| 317 | |
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| 318 | // void ?{}(T *, T); |
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| 319 | FunctionType *copyCtorType = assignType->clone(); |
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| 320 | |
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| 321 | // T ?=?(T *, T); |
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| 322 | ObjectDecl *returnVal = new ObjectDecl( "_ret", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, cloneWithParams( refType, structParams ), 0 ); |
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| 323 | assignType->get_returnVals().push_back( returnVal ); |
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| 324 | |
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| 325 | // Routines at global scope marked "static" to prevent multiple definitions is separate translation units |
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| 326 | // because each unit generates copies of the default routines for each aggregate. |
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| 327 | FunctionDecl *assignDecl = new FunctionDecl( "?=?", functionNesting > 0 ? DeclarationNode::NoStorageClass : DeclarationNode::Static, LinkageSpec::AutoGen, assignType, new CompoundStmt( noLabels ), true, false ); |
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| 328 | FunctionDecl *ctorDecl = new FunctionDecl( "?{}", functionNesting > 0 ? DeclarationNode::NoStorageClass : DeclarationNode::Static, LinkageSpec::AutoGen, ctorType, new CompoundStmt( noLabels ), true, false ); |
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| 329 | FunctionDecl *copyCtorDecl = new FunctionDecl( "?{}", functionNesting > 0 ? DeclarationNode::NoStorageClass : DeclarationNode::Static, LinkageSpec::AutoGen, copyCtorType, new CompoundStmt( noLabels ), true, false ); |
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| 330 | FunctionDecl *dtorDecl = new FunctionDecl( "^?{}", functionNesting > 0 ? DeclarationNode::NoStorageClass : DeclarationNode::Static, LinkageSpec::AutoGen, dtorType, new CompoundStmt( noLabels ), true, false ); |
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| 331 | assignDecl->fixUniqueId(); |
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| 332 | ctorDecl->fixUniqueId(); |
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| 333 | copyCtorDecl->fixUniqueId(); |
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| 334 | dtorDecl->fixUniqueId(); |
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| 335 | |
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[9f70ab57] | 336 | if ( functionNesting == 0 ) { |
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| 337 | // forward declare if top-level struct, so that |
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| 338 | // type is complete as soon as its body ends |
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| 339 | addForwardDecl( assignDecl, declsToAdd ); |
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| 340 | addForwardDecl( ctorDecl, declsToAdd ); |
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| 341 | addForwardDecl( copyCtorDecl, declsToAdd ); |
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| 342 | addForwardDecl( dtorDecl, declsToAdd ); |
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| 343 | } |
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| 344 | |
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[dac0aa9] | 345 | // create constructors which take each member type as a parameter. |
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[f5ef08c] | 346 | // for example, for struct A { int x, y; }; generate |
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| 347 | // void ?{}(A *, int) and void ?{}(A *, int, int) |
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[dac0aa9] | 348 | std::list<Declaration *> memCtors; |
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| 349 | FunctionType * memCtorType = ctorType->clone(); |
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| 350 | for ( std::list<Declaration *>::iterator i = aggregateDecl->get_members().begin(); i != aggregateDecl->get_members().end(); ++i ) { |
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| 351 | DeclarationWithType * member = dynamic_cast<DeclarationWithType *>( *i ); |
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| 352 | assert( member ); |
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[356189a] | 353 | if ( isUnnamedBitfield( dynamic_cast< ObjectDecl * > ( member ) ) ) { |
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| 354 | // don't make a function whose parameter is an unnamed bitfield |
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| 355 | continue; |
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[fb24492] | 356 | } else if ( member->get_name() == "" ) { |
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| 357 | // don't assign to anonymous members |
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| 358 | // xxx - this is a temporary fix. Anonymous members tie into |
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| 359 | // our inheritance model. I think the correct way to handle this is to |
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| 360 | // cast the structure to the type of the member and let the resolver |
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| 361 | // figure out whether it's valid and have a pass afterwards that fixes |
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| 362 | // the assignment to use pointer arithmetic with the offset of the |
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| 363 | // member, much like how generic type members are handled. |
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| 364 | continue; |
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[356189a] | 365 | } |
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[dac0aa9] | 366 | memCtorType->get_parameters().push_back( new ObjectDecl( member->get_name(), DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, member->get_type()->clone(), 0 ) ); |
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| 367 | FunctionDecl * ctor = new FunctionDecl( "?{}", functionNesting > 0 ? DeclarationNode::NoStorageClass : DeclarationNode::Static, LinkageSpec::AutoGen, memCtorType->clone(), new CompoundStmt( noLabels ), true, false ); |
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| 368 | ctor->fixUniqueId(); |
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[a2f920f] | 369 | makeStructFieldCtorBody( aggregateDecl->get_members().begin(), aggregateDecl->get_members().end(), ctor, genericSubs, isDynamicLayout ); |
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[dac0aa9] | 370 | memCtors.push_back( ctor ); |
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| 371 | } |
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| 372 | delete memCtorType; |
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| 373 | |
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[972e6f7] | 374 | // generate appropriate calls to member ctor, assignment |
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[a2f920f] | 375 | makeStructFunctionBody( aggregateDecl->get_members().begin(), aggregateDecl->get_members().end(), assignDecl, genericSubs, isDynamicLayout ); |
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| 376 | makeStructFunctionBody( aggregateDecl->get_members().begin(), aggregateDecl->get_members().end(), ctorDecl, genericSubs, isDynamicLayout ); |
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| 377 | makeStructFunctionBody( aggregateDecl->get_members().begin(), aggregateDecl->get_members().end(), copyCtorDecl, genericSubs, isDynamicLayout ); |
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[972e6f7] | 378 | // needs to do everything in reverse, so pass "forward" as false |
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[a2f920f] | 379 | makeStructFunctionBody( aggregateDecl->get_members().rbegin(), aggregateDecl->get_members().rend(), dtorDecl, genericSubs, isDynamicLayout, false ); |
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[972e6f7] | 380 | |
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[a2f920f] | 381 | if ( ! isDynamicLayout ) assignDecl->get_statements()->get_kids().push_back( new ReturnStmt( noLabels, new VariableExpr( srcParam ) ) ); |
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[972e6f7] | 382 | |
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| 383 | declsToAdd.push_back( assignDecl ); |
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| 384 | declsToAdd.push_back( ctorDecl ); |
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| 385 | declsToAdd.push_back( copyCtorDecl ); |
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| 386 | declsToAdd.push_back( dtorDecl ); |
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[dac0aa9] | 387 | declsToAdd.splice( declsToAdd.end(), memCtors ); |
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[972e6f7] | 388 | } |
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| 389 | |
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| 390 | void makeUnionFunctions( UnionDecl *aggregateDecl, UnionInstType *refType, unsigned int functionNesting, std::list< Declaration * > & declsToAdd ) { |
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| 391 | FunctionType *assignType = new FunctionType( Type::Qualifiers(), false ); |
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| 392 | |
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| 393 | // Make function polymorphic in same parameters as generic union, if applicable |
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[5070fe4] | 394 | bool isDynamicLayout = false; // NOTE this flag is an incredibly ugly kludge; we should fix the assignment signature instead (ditto for struct) |
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[972e6f7] | 395 | std::list< TypeDecl* >& genericParams = aggregateDecl->get_parameters(); |
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| 396 | std::list< Expression* > unionParams; // List of matching parameters to put on types |
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| 397 | for ( std::list< TypeDecl* >::const_iterator param = genericParams.begin(); param != genericParams.end(); ++param ) { |
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[5070fe4] | 398 | if ( (*param)->get_kind() == TypeDecl::Any ) isDynamicLayout = true; |
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[972e6f7] | 399 | TypeDecl *typeParam = cloneAndRename( *param, "_autoassign_" + aggregateDecl->get_name() + "_" + (*param)->get_name() ); |
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| 400 | assignType->get_forall().push_back( typeParam ); |
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| 401 | unionParams.push_back( new TypeExpr( new TypeInstType( Type::Qualifiers(), typeParam->get_name(), typeParam ) ) ); |
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| 402 | } |
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| 403 | |
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| 404 | ObjectDecl *dstParam = new ObjectDecl( "_dst", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, new PointerType( Type::Qualifiers(), cloneWithParams( refType, unionParams ) ), 0 ); |
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| 405 | assignType->get_parameters().push_back( dstParam ); |
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| 406 | |
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| 407 | // default ctor/dtor need only first parameter |
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| 408 | FunctionType * ctorType = assignType->clone(); |
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| 409 | FunctionType * dtorType = assignType->clone(); |
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| 410 | |
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| 411 | ObjectDecl *srcParam = new ObjectDecl( "_src", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, cloneWithParams( refType, unionParams ), 0 ); |
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| 412 | assignType->get_parameters().push_back( srcParam ); |
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| 413 | |
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| 414 | // copy ctor needs both parameters |
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| 415 | FunctionType * copyCtorType = assignType->clone(); |
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| 416 | |
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| 417 | // assignment needs both and return value |
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| 418 | ObjectDecl *returnVal = new ObjectDecl( "_ret", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, cloneWithParams( refType, unionParams ), 0 ); |
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| 419 | assignType->get_returnVals().push_back( returnVal ); |
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| 420 | |
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| 421 | // Routines at global scope marked "static" to prevent multiple definitions is separate translation units |
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| 422 | // because each unit generates copies of the default routines for each aggregate. |
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| 423 | FunctionDecl *assignDecl = new FunctionDecl( "?=?", functionNesting > 0 ? DeclarationNode::NoStorageClass : DeclarationNode::Static, LinkageSpec::AutoGen, assignType, new CompoundStmt( noLabels ), true, false ); |
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| 424 | FunctionDecl *ctorDecl = new FunctionDecl( "?{}", functionNesting > 0 ? DeclarationNode::NoStorageClass : DeclarationNode::Static, LinkageSpec::AutoGen, ctorType, new CompoundStmt( noLabels ), true, false ); |
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| 425 | FunctionDecl *copyCtorDecl = new FunctionDecl( "?{}", functionNesting > 0 ? DeclarationNode::NoStorageClass : DeclarationNode::Static, LinkageSpec::AutoGen, copyCtorType, NULL, true, false ); |
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| 426 | FunctionDecl *dtorDecl = new FunctionDecl( "^?{}", functionNesting > 0 ? DeclarationNode::NoStorageClass : DeclarationNode::Static, LinkageSpec::AutoGen, dtorType, new CompoundStmt( noLabels ), true, false ); |
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| 427 | |
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| 428 | assignDecl->fixUniqueId(); |
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| 429 | ctorDecl->fixUniqueId(); |
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| 430 | copyCtorDecl->fixUniqueId(); |
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| 431 | dtorDecl->fixUniqueId(); |
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| 432 | |
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[9b4c936] | 433 | makeUnionFieldsAssignment( srcParam, dstParam, back_inserter( assignDecl->get_statements()->get_kids() ) ); |
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| 434 | if ( isDynamicLayout ) makeUnionFieldsAssignment( srcParam, returnVal, back_inserter( assignDecl->get_statements()->get_kids() ) ); |
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[a465caf] | 435 | else assignDecl->get_statements()->get_kids().push_back( new ReturnStmt( noLabels, new VariableExpr( srcParam ) ) ); |
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[972e6f7] | 436 | |
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| 437 | // body of assignment and copy ctor is the same |
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| 438 | copyCtorDecl->set_statements( assignDecl->get_statements()->clone() ); |
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| 439 | |
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[a465caf] | 440 | // create a constructor which takes the first member type as a parameter. |
---|
| 441 | // for example, for Union A { int x; double y; }; generate |
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| 442 | // void ?{}(A *, int) |
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| 443 | // This is to mimic C's behaviour which initializes the first member of the union. |
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| 444 | std::list<Declaration *> memCtors; |
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| 445 | for ( Declaration * member : aggregateDecl->get_members() ) { |
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| 446 | if ( DeclarationWithType * field = dynamic_cast< DeclarationWithType * >( member ) ) { |
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| 447 | ObjectDecl * srcParam = new ObjectDecl( "src", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, field->get_type()->clone(), 0 ); |
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| 448 | |
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| 449 | FunctionType * memCtorType = ctorType->clone(); |
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| 450 | memCtorType->get_parameters().push_back( srcParam ); |
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| 451 | FunctionDecl * ctor = new FunctionDecl( "?{}", functionNesting > 0 ? DeclarationNode::NoStorageClass : DeclarationNode::Static, LinkageSpec::AutoGen, memCtorType, new CompoundStmt( noLabels ), true, false ); |
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| 452 | ctor->fixUniqueId(); |
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| 453 | |
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[9b4c936] | 454 | makeUnionFieldsAssignment( srcParam, dstParam, back_inserter( ctor->get_statements()->get_kids() ) ); |
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[a465caf] | 455 | memCtors.push_back( ctor ); |
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| 456 | // only generate a ctor for the first field |
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| 457 | break; |
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| 458 | } |
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| 459 | } |
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| 460 | |
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[972e6f7] | 461 | declsToAdd.push_back( assignDecl ); |
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| 462 | declsToAdd.push_back( ctorDecl ); |
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| 463 | declsToAdd.push_back( copyCtorDecl ); |
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| 464 | declsToAdd.push_back( dtorDecl ); |
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[a465caf] | 465 | declsToAdd.splice( declsToAdd.end(), memCtors ); |
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[972e6f7] | 466 | } |
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| 467 | |
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| 468 | void AutogenerateRoutines::visit( EnumDecl *enumDecl ) { |
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| 469 | if ( ! enumDecl->get_members().empty() ) { |
---|
| 470 | EnumInstType *enumInst = new EnumInstType( Type::Qualifiers(), enumDecl->get_name() ); |
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| 471 | // enumInst->set_baseEnum( enumDecl ); |
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| 472 | // declsToAdd.push_back( |
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[4cc4286] | 473 | makeEnumFunctions( enumDecl, enumInst, functionNesting, declsToAdd ); |
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[972e6f7] | 474 | } |
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| 475 | } |
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| 476 | |
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| 477 | void AutogenerateRoutines::visit( StructDecl *structDecl ) { |
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| 478 | if ( ! structDecl->get_members().empty() && structsDone.find( structDecl->get_name() ) == structsDone.end() ) { |
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| 479 | StructInstType structInst( Type::Qualifiers(), structDecl->get_name() ); |
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| 480 | structInst.set_baseStruct( structDecl ); |
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| 481 | makeStructFunctions( structDecl, &structInst, functionNesting, declsToAdd ); |
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| 482 | structsDone.insert( structDecl->get_name() ); |
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| 483 | } // if |
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| 484 | } |
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| 485 | |
---|
| 486 | void AutogenerateRoutines::visit( UnionDecl *unionDecl ) { |
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| 487 | if ( ! unionDecl->get_members().empty() ) { |
---|
| 488 | UnionInstType unionInst( Type::Qualifiers(), unionDecl->get_name() ); |
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| 489 | unionInst.set_baseUnion( unionDecl ); |
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| 490 | makeUnionFunctions( unionDecl, &unionInst, functionNesting, declsToAdd ); |
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| 491 | } // if |
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| 492 | } |
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| 493 | |
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| 494 | void AutogenerateRoutines::visit( TypeDecl *typeDecl ) { |
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| 495 | CompoundStmt *stmts = 0; |
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| 496 | TypeInstType *typeInst = new TypeInstType( Type::Qualifiers(), typeDecl->get_name(), false ); |
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| 497 | typeInst->set_baseType( typeDecl ); |
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| 498 | ObjectDecl *src = new ObjectDecl( "_src", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, typeInst->clone(), 0 ); |
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| 499 | ObjectDecl *dst = new ObjectDecl( "_dst", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, new PointerType( Type::Qualifiers(), typeInst->clone() ), 0 ); |
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| 500 | if ( typeDecl->get_base() ) { |
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[c738ca4] | 501 | // xxx - generate ctor/dtors for typedecls, e.g. |
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| 502 | // otype T = int *; |
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[972e6f7] | 503 | stmts = new CompoundStmt( std::list< Label >() ); |
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| 504 | UntypedExpr *assign = new UntypedExpr( new NameExpr( "?=?" ) ); |
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| 505 | assign->get_args().push_back( new CastExpr( new VariableExpr( dst ), new PointerType( Type::Qualifiers(), typeDecl->get_base()->clone() ) ) ); |
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| 506 | assign->get_args().push_back( new CastExpr( new VariableExpr( src ), typeDecl->get_base()->clone() ) ); |
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| 507 | stmts->get_kids().push_back( new ReturnStmt( std::list< Label >(), assign ) ); |
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| 508 | } // if |
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| 509 | FunctionType *type = new FunctionType( Type::Qualifiers(), false ); |
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| 510 | type->get_returnVals().push_back( new ObjectDecl( "", DeclarationNode::NoStorageClass, LinkageSpec::Cforall, 0, typeInst, 0 ) ); |
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| 511 | type->get_parameters().push_back( dst ); |
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| 512 | type->get_parameters().push_back( src ); |
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[2f6b7c9] | 513 | FunctionDecl *func = new FunctionDecl( "?=?", DeclarationNode::NoStorageClass, LinkageSpec::AutoGen, type, stmts, true, false ); |
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[972e6f7] | 514 | declsToAdd.push_back( func ); |
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| 515 | } |
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| 516 | |
---|
| 517 | void addDecls( std::list< Declaration * > &declsToAdd, std::list< Statement * > &statements, std::list< Statement * >::iterator i ) { |
---|
| 518 | for ( std::list< Declaration * >::iterator decl = declsToAdd.begin(); decl != declsToAdd.end(); ++decl ) { |
---|
| 519 | statements.insert( i, new DeclStmt( noLabels, *decl ) ); |
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| 520 | } // for |
---|
| 521 | declsToAdd.clear(); |
---|
| 522 | } |
---|
| 523 | |
---|
| 524 | void AutogenerateRoutines::visit( FunctionType *) { |
---|
| 525 | // ensure that we don't add assignment ops for types defined as part of the function |
---|
| 526 | } |
---|
| 527 | |
---|
| 528 | void AutogenerateRoutines::visit( PointerType *) { |
---|
| 529 | // ensure that we don't add assignment ops for types defined as part of the pointer |
---|
| 530 | } |
---|
| 531 | |
---|
[a5a71d0] | 532 | void AutogenerateRoutines::visit( TraitDecl *) { |
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| 533 | // ensure that we don't add assignment ops for types defined as part of the trait |
---|
[972e6f7] | 534 | } |
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| 535 | |
---|
| 536 | template< typename StmtClass > |
---|
| 537 | inline void AutogenerateRoutines::visitStatement( StmtClass *stmt ) { |
---|
| 538 | std::set< std::string > oldStructs = structsDone; |
---|
| 539 | addVisit( stmt, *this ); |
---|
| 540 | structsDone = oldStructs; |
---|
| 541 | } |
---|
| 542 | |
---|
| 543 | void AutogenerateRoutines::visit( FunctionDecl *functionDecl ) { |
---|
| 544 | maybeAccept( functionDecl->get_functionType(), *this ); |
---|
| 545 | acceptAll( functionDecl->get_oldDecls(), *this ); |
---|
| 546 | functionNesting += 1; |
---|
| 547 | maybeAccept( functionDecl->get_statements(), *this ); |
---|
| 548 | functionNesting -= 1; |
---|
| 549 | } |
---|
| 550 | |
---|
| 551 | void AutogenerateRoutines::visit( CompoundStmt *compoundStmt ) { |
---|
| 552 | visitStatement( compoundStmt ); |
---|
| 553 | } |
---|
| 554 | |
---|
| 555 | void AutogenerateRoutines::visit( SwitchStmt *switchStmt ) { |
---|
| 556 | visitStatement( switchStmt ); |
---|
| 557 | } |
---|
| 558 | } // SymTab |
---|