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view dmd/declaration.h @ 1168:ab186e535e72
A different fix to #218 and DMD2682 that does not lead to constant folding regressions.
Fixes run/const_15, run/c/const_16_B.
The price is removing the lvalueness of struct literals. If it turns out too
much code depends on this behavior or we don't want to break with DMD, we
could keep struct literals as lvalues and instead convert struct literals used
as expression initializers into struct initializers.
author | Christian Kamm <kamm incasoftware de> |
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date | Sun, 29 Mar 2009 11:43:45 +0200 |
parents | 3d1b16dabd25 |
children | e961851fb8be |
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// Compiler implementation of the D programming language // Copyright (c) 1999-2008 by Digital Mars // All Rights Reserved // written by Walter Bright // http://www.digitalmars.com // License for redistribution is by either the Artistic License // in artistic.txt, or the GNU General Public License in gnu.txt. // See the included readme.txt for details. #ifndef DMD_DECLARATION_H #define DMD_DECLARATION_H #ifdef __DMC__ #pragma once #endif /* __DMC__ */ #include <set> #include <map> #include <string> #include "dsymbol.h" #include "lexer.h" #include "mtype.h" struct Expression; struct Statement; struct LabelDsymbol; struct LabelStatement; struct Initializer; struct Module; struct InlineScanState; struct ForeachStatement; struct FuncDeclaration; struct ExpInitializer; struct StructDeclaration; struct TupleType; struct InterState; struct IRState; struct AnonDeclaration; enum PROT; enum LINK; enum TOK; enum MATCH; enum STC { STCundefined = 0, STCstatic = 1, STCextern = 2, STCconst = 4, STCfinal = 8, STCabstract = 0x10, STCparameter = 0x20, STCfield = 0x40, STCoverride = 0x80, STCauto = 0x100, STCsynchronized = 0x200, STCdeprecated = 0x400, STCin = 0x800, // in parameter STCout = 0x1000, // out parameter STClazy = 0x2000, // lazy parameter STCforeach = 0x4000, // variable for foreach loop STCcomdat = 0x8000, // should go into COMDAT record STCvariadic = 0x10000, // variadic function argument STCctorinit = 0x20000, // can only be set inside constructor STCtemplateparameter = 0x40000, // template parameter STCscope = 0x80000, // template parameter STCinvariant = 0x100000, STCref = 0x200000, STCinit = 0x400000, // has explicit initializer STCmanifest = 0x800000, // manifest constant STCnodtor = 0x1000000, // don't run destructor STCnothrow = 0x2000000, // never throws exceptions STCpure = 0x4000000, // pure function STCtls = 0x8000000, // thread local STCalias = 0x10000000, // alias parameter }; struct Match { int count; // number of matches found MATCH last; // match level of lastf FuncDeclaration *lastf; // last matching function we found FuncDeclaration *nextf; // current matching function FuncDeclaration *anyf; // pick a func, any func, to use for error recovery }; void overloadResolveX(Match *m, FuncDeclaration *f, Expressions *arguments); int overloadApply(FuncDeclaration *fstart, int (*fp)(void *, FuncDeclaration *), void *param); /**************************************************************/ struct Declaration : Dsymbol { Type *type; Type *originalType; // before semantic analysis unsigned storage_class; enum PROT protection; enum LINK linkage; Declaration(Identifier *id); void semantic(Scope *sc); const char *kind(); unsigned size(Loc loc); void checkModify(Loc loc, Scope *sc, Type *t); void emitComment(Scope *sc); void toDocBuffer(OutBuffer *buf); char *mangle(); int isStatic() { return storage_class & STCstatic; } virtual int isStaticConstructor(); virtual int isStaticDestructor(); virtual int isDelete(); virtual int isDataseg(); virtual int isCodeseg(); int isCtorinit() { return storage_class & STCctorinit; } int isFinal() { return storage_class & STCfinal; } int isAbstract() { return storage_class & STCabstract; } int isConst() { return storage_class & STCconst; } int isInvariant() { return 0; } int isAuto() { return storage_class & STCauto; } int isScope() { return storage_class & (STCscope | STCauto); } int isSynchronized() { return storage_class & STCsynchronized; } int isParameter() { return storage_class & STCparameter; } int isDeprecated() { return storage_class & STCdeprecated; } int isOverride() { return storage_class & STCoverride; } int isIn() { return storage_class & STCin; } int isOut() { return storage_class & STCout; } int isRef() { return storage_class & STCref; } enum PROT prot(); Declaration *isDeclaration() { return this; } #if IN_LLVM /// Codegen traversal virtual void codegen(Ir* ir); #endif }; /**************************************************************/ struct TupleDeclaration : Declaration { Objects *objects; int isexp; // 1: expression tuple TypeTuple *tupletype; // !=NULL if this is a type tuple TupleDeclaration(Loc loc, Identifier *ident, Objects *objects); Dsymbol *syntaxCopy(Dsymbol *); const char *kind(); Type *getType(); int needThis(); TupleDeclaration *isTupleDeclaration() { return this; } #if IN_LLVM /// Codegen traversal void codegen(Ir* ir); #endif }; /**************************************************************/ struct TypedefDeclaration : Declaration { Type *basetype; Initializer *init; int sem; // 0: semantic() has not been run // 1: semantic() is in progress // 2: semantic() has been run // 3: semantic2() has been run int inuse; // used to detect typedef cycles TypedefDeclaration(Loc loc, Identifier *ident, Type *basetype, Initializer *init); Dsymbol *syntaxCopy(Dsymbol *); void semantic(Scope *sc); void semantic2(Scope *sc); char *mangle(); const char *kind(); Type *getType(); void toCBuffer(OutBuffer *buf, HdrGenState *hgs); #ifdef _DH Type *htype; Type *hbasetype; #endif void toDocBuffer(OutBuffer *buf); #if IN_DMD void toObjFile(int multiobj); // compile to .obj file void toDebug(); int cvMember(unsigned char *p); #endif TypedefDeclaration *isTypedefDeclaration() { return this; } #if IN_DMD Symbol *sinit; Symbol *toInitializer(); #endif #if IN_LLVM /// Codegen traversal void codegen(Ir* ir); #endif }; /**************************************************************/ struct AliasDeclaration : Declaration { Dsymbol *aliassym; Dsymbol *overnext; // next in overload list int inSemantic; AliasDeclaration(Loc loc, Identifier *ident, Type *type); AliasDeclaration(Loc loc, Identifier *ident, Dsymbol *s); Dsymbol *syntaxCopy(Dsymbol *); void semantic(Scope *sc); int overloadInsert(Dsymbol *s); const char *kind(); Type *getType(); Dsymbol *toAlias(); void toCBuffer(OutBuffer *buf, HdrGenState *hgs); #ifdef _DH Type *htype; Dsymbol *haliassym; #endif void toDocBuffer(OutBuffer *buf); AliasDeclaration *isAliasDeclaration() { return this; } }; /**************************************************************/ struct VarDeclaration : Declaration { Initializer *init; unsigned offset; int noauto; // no auto semantics int nestedref; // referenced by a lexically nested function int inuse; int ctorinit; // it has been initialized in a ctor int onstack; // 1: it has been allocated on the stack // 2: on stack, run destructor anyway int canassign; // it can be assigned to Dsymbol *aliassym; // if redone as alias to another symbol Expression *value; // when interpreting, this is the value // (NULL if value not determinable) VarDeclaration(Loc loc, Type *t, Identifier *id, Initializer *init); Dsymbol *syntaxCopy(Dsymbol *); void semantic(Scope *sc); void semantic2(Scope *sc); const char *kind(); void toCBuffer(OutBuffer *buf, HdrGenState *hgs); #ifdef _DH Type *htype; Initializer *hinit; #endif int needThis(); int isImportedSymbol(); int isDataseg(); int hasPointers(); Expression *callAutoDtor(); ExpInitializer *getExpInitializer(); void checkCtorConstInit(); void checkNestedReference(Scope *sc, Loc loc); Dsymbol *toAlias(); #if IN_DMD void toObjFile(int multiobj); // compile to .obj file Symbol *toSymbol(); int cvMember(unsigned char *p); #endif // Eliminate need for dynamic_cast VarDeclaration *isVarDeclaration() { return (VarDeclaration *)this; } #if IN_LLVM /// Codegen traversal virtual void codegen(Ir* ir); // LDC AnonDeclaration* anonDecl; unsigned offset2; bool nakedUse; #endif }; /**************************************************************/ // LDC uses this to denote static struct initializers struct StaticStructInitDeclaration : Declaration { StructDeclaration *dsym; StaticStructInitDeclaration(Loc loc, StructDeclaration *dsym); #if IN_DMD Symbol *toSymbol(); #endif // Eliminate need for dynamic_cast StaticStructInitDeclaration *isStaticStructInitDeclaration() { return (StaticStructInitDeclaration *)this; } }; struct ClassInfoDeclaration : VarDeclaration { ClassDeclaration *cd; ClassInfoDeclaration(ClassDeclaration *cd); Dsymbol *syntaxCopy(Dsymbol *); void semantic(Scope *sc); void emitComment(Scope *sc); #if IN_DMD Symbol *toSymbol(); #endif ClassInfoDeclaration* isClassInfoDeclaration() { return this; } }; struct ModuleInfoDeclaration : VarDeclaration { Module *mod; ModuleInfoDeclaration(Module *mod); Dsymbol *syntaxCopy(Dsymbol *); void semantic(Scope *sc); void emitComment(Scope *sc); #if IN_DMD Symbol *toSymbol(); #endif }; struct TypeInfoDeclaration : VarDeclaration { Type *tinfo; TypeInfoDeclaration(Type *tinfo, int internal); Dsymbol *syntaxCopy(Dsymbol *); void semantic(Scope *sc); void emitComment(Scope *sc); #if IN_DMD void toObjFile(int multiobj); // compile to .obj file Symbol *toSymbol(); virtual void toDt(dt_t **pdt); #endif virtual TypeInfoDeclaration* isTypeInfoDeclaration() { return this; } #if IN_LLVM /// Codegen traversal void codegen(Ir* ir); virtual void llvmDefine(); #endif }; struct TypeInfoStructDeclaration : TypeInfoDeclaration { TypeInfoStructDeclaration(Type *tinfo); #if IN_DMD void toDt(dt_t **pdt); #endif #if IN_LLVM void llvmDefine(); #endif }; struct TypeInfoClassDeclaration : TypeInfoDeclaration { TypeInfoClassDeclaration(Type *tinfo); #if IN_DMD void toDt(dt_t **pdt); #endif #if IN_LLVM void llvmDefine(); #endif }; struct TypeInfoInterfaceDeclaration : TypeInfoDeclaration { TypeInfoInterfaceDeclaration(Type *tinfo); #if IN_DMD void toDt(dt_t **pdt); #endif #if IN_LLVM void llvmDefine(); #endif }; struct TypeInfoTypedefDeclaration : TypeInfoDeclaration { TypeInfoTypedefDeclaration(Type *tinfo); #if IN_DMD void toDt(dt_t **pdt); #endif #if IN_LLVM void llvmDefine(); #endif }; struct TypeInfoPointerDeclaration : TypeInfoDeclaration { TypeInfoPointerDeclaration(Type *tinfo); #if IN_DMD void toDt(dt_t **pdt); #endif #if IN_LLVM void llvmDefine(); #endif }; struct TypeInfoArrayDeclaration : TypeInfoDeclaration { TypeInfoArrayDeclaration(Type *tinfo); #if IN_DMD void toDt(dt_t **pdt); #endif #if IN_LLVM void llvmDefine(); #endif }; struct TypeInfoStaticArrayDeclaration : TypeInfoDeclaration { TypeInfoStaticArrayDeclaration(Type *tinfo); #if IN_DMD void toDt(dt_t **pdt); #endif #if IN_LLVM void llvmDefine(); #endif }; struct TypeInfoAssociativeArrayDeclaration : TypeInfoDeclaration { TypeInfoAssociativeArrayDeclaration(Type *tinfo); #if IN_DMD void toDt(dt_t **pdt); #endif #if IN_LLVM void llvmDefine(); #endif }; struct TypeInfoEnumDeclaration : TypeInfoDeclaration { TypeInfoEnumDeclaration(Type *tinfo); #if IN_DMD void toDt(dt_t **pdt); #endif #if IN_LLVM void llvmDefine(); #endif }; struct TypeInfoFunctionDeclaration : TypeInfoDeclaration { TypeInfoFunctionDeclaration(Type *tinfo); #if IN_DMD void toDt(dt_t **pdt); #endif #if IN_LLVM void llvmDefine(); #endif }; struct TypeInfoDelegateDeclaration : TypeInfoDeclaration { TypeInfoDelegateDeclaration(Type *tinfo); #if IN_DMD void toDt(dt_t **pdt); #endif #if IN_LLVM void llvmDefine(); #endif }; struct TypeInfoTupleDeclaration : TypeInfoDeclaration { TypeInfoTupleDeclaration(Type *tinfo); #if IN_DMD void toDt(dt_t **pdt); #endif #if IN_LLVM void llvmDefine(); #endif }; #if DMDV2 struct TypeInfoConstDeclaration : TypeInfoDeclaration { TypeInfoConstDeclaration(Type *tinfo); #if IN_DMD void toDt(dt_t **pdt); #endif #if IN_LLVM void llvmDefine(); #endif }; struct TypeInfoInvariantDeclaration : TypeInfoDeclaration { TypeInfoInvariantDeclaration(Type *tinfo); #if IN_DMD void toDt(dt_t **pdt); #endif #if IN_LLVM void llvmDefine(); #endif }; #endif /**************************************************************/ struct ThisDeclaration : VarDeclaration { ThisDeclaration(Type *t); Dsymbol *syntaxCopy(Dsymbol *); }; enum ILS { ILSuninitialized, // not computed yet ILSno, // cannot inline ILSyes, // can inline }; /**************************************************************/ #if DMDV2 enum BUILTIN { BUILTINunknown = -1, // not known if this is a builtin BUILTINnot, // this is not a builtin BUILTINsin, // std.math.sin BUILTINcos, // std.math.cos BUILTINtan, // std.math.tan BUILTINsqrt, // std.math.sqrt BUILTINfabs, // std.math.fabs }; Expression *eval_builtin(enum BUILTIN builtin, Expressions *arguments); #endif struct FuncDeclaration : Declaration { Array *fthrows; // Array of Type's of exceptions (not used) Statement *frequire; Statement *fensure; Statement *fbody; Identifier *outId; // identifier for out statement VarDeclaration *vresult; // variable corresponding to outId LabelDsymbol *returnLabel; // where the return goes DsymbolTable *localsymtab; // used to prevent symbols in different // scopes from having the same name VarDeclaration *vthis; // 'this' parameter (member and nested) VarDeclaration *v_arguments; // '_arguments' parameter #if IN_GCC VarDeclaration *v_argptr; // '_argptr' variable #endif Dsymbols *parameters; // Array of VarDeclaration's for parameters DsymbolTable *labtab; // statement label symbol table Declaration *overnext; // next in overload list Loc endloc; // location of closing curly bracket int vtblIndex; // for member functions, index into vtbl[] int naked; // !=0 if naked int inlineAsm; // !=0 if has inline assembler ILS inlineStatus; int inlineNest; // !=0 if nested inline int cantInterpret; // !=0 if cannot interpret function int semanticRun; // !=0 if semantic3() had been run // this function's frame ptr ForeachStatement *fes; // if foreach body, this is the foreach int introducing; // !=0 if 'introducing' function Type *tintro; // if !=NULL, then this is the type // of the 'introducing' function // this one is overriding int inferRetType; // !=0 if return type is to be inferred Scope *scope; // !=NULL means context to use // Things that should really go into Scope int hasReturnExp; // 1 if there's a return exp; statement // 2 if there's a throw statement // 4 if there's an assert(0) // 8 if there's inline asm // Support for NRVO (named return value optimization) int nrvo_can; // !=0 means we can do it VarDeclaration *nrvo_var; // variable to replace with shidden #if IN_DMD Symbol *shidden; // hidden pointer passed to function #endif #if DMDV2 enum BUILTIN builtin; // set if this is a known, builtin // function we can evaluate at compile // time int tookAddressOf; // set if someone took the address of // this function Dsymbols closureVars; // local variables in this function // which are referenced by nested // functions #else int nestedFrameRef; // !=0 if nested variables referenced #endif FuncDeclaration(Loc loc, Loc endloc, Identifier *id, enum STC storage_class, Type *type); Dsymbol *syntaxCopy(Dsymbol *); void semantic(Scope *sc); void semantic2(Scope *sc); void semantic3(Scope *sc); void toCBuffer(OutBuffer *buf, HdrGenState *hgs); void bodyToCBuffer(OutBuffer *buf, HdrGenState *hgs); int overrides(FuncDeclaration *fd); int findVtblIndex(Array *vtbl, int dim); int overloadInsert(Dsymbol *s); FuncDeclaration *overloadExactMatch(Type *t); FuncDeclaration *overloadResolve(Loc loc, Expressions *arguments); LabelDsymbol *searchLabel(Identifier *ident); AggregateDeclaration *isThis(); AggregateDeclaration *isMember2(); int getLevel(Loc loc, FuncDeclaration *fd); // lexical nesting level difference void appendExp(Expression *e); void appendState(Statement *s); char *mangle(); int isMain(); int isWinMain(); int isDllMain(); int isExport(); int isImportedSymbol(); int isAbstract(); int isCodeseg(); virtual int isNested(); int needThis(); virtual int isVirtual(); virtual int isFinal(); virtual int addPreInvariant(); virtual int addPostInvariant(); Expression *interpret(InterState *istate, Expressions *arguments); void inlineScan(); int canInline(int hasthis, int hdrscan = 0); Expression *doInline(InlineScanState *iss, Expression *ethis, Array *arguments); const char *kind(); void toDocBuffer(OutBuffer *buf); // LDC: give argument types to runtime functions static FuncDeclaration *genCfunc(Arguments *args, Type *treturn, const char *name); static FuncDeclaration *genCfunc(Arguments *args, Type *treturn, Identifier *id); #if IN_DMD Symbol *toSymbol(); Symbol *toThunkSymbol(int offset); // thunk version void toObjFile(int multiobj); // compile to .obj file int cvMember(unsigned char *p); #endif FuncDeclaration *isFuncDeclaration() { return this; } #if IN_LLVM // LDC stuff /// Codegen traversal void codegen(Ir* ir); // vars declared in this function that nested funcs reference // is this is not empty, nestedFrameRef is set and these VarDecls // probably have nestedref set too, see VarDeclaration::checkNestedReference std::set<VarDeclaration*> nestedVars; std::string intrinsicName; bool isIntrinsic(); bool isVaIntrinsic(); // we keep our own table of label statements as LabelDsymbolS // don't always carry their corresponding statement along ... typedef std::map<const char*, LabelStatement*> LabelMap; LabelMap labmap; // if this is an array operation it gets a little special attention bool isArrayOp; // true if overridden with the pragma(allow_inline); stmt bool allowInlining; #endif }; struct FuncAliasDeclaration : FuncDeclaration { FuncDeclaration *funcalias; FuncAliasDeclaration(FuncDeclaration *funcalias); FuncAliasDeclaration *isFuncAliasDeclaration() { return this; } const char *kind(); #if IN_DMD Symbol *toSymbol(); #endif }; struct FuncLiteralDeclaration : FuncDeclaration { enum TOK tok; // TOKfunction or TOKdelegate FuncLiteralDeclaration(Loc loc, Loc endloc, Type *type, enum TOK tok, ForeachStatement *fes); void toCBuffer(OutBuffer *buf, HdrGenState *hgs); Dsymbol *syntaxCopy(Dsymbol *); int isNested(); int isVirtual(); FuncLiteralDeclaration *isFuncLiteralDeclaration() { return this; } const char *kind(); }; struct CtorDeclaration : FuncDeclaration { Arguments *arguments; int varargs; CtorDeclaration(Loc loc, Loc endloc, Arguments *arguments, int varargs); Dsymbol *syntaxCopy(Dsymbol *); void semantic(Scope *sc); void toCBuffer(OutBuffer *buf, HdrGenState *hgs); const char *kind(); char *toChars(); int isVirtual(); int addPreInvariant(); int addPostInvariant(); void toDocBuffer(OutBuffer *buf); CtorDeclaration *isCtorDeclaration() { return this; } }; #if DMDV2 struct PostBlitDeclaration : FuncDeclaration { PostBlitDeclaration(Loc loc, Loc endloc); PostBlitDeclaration(Loc loc, Loc endloc, Identifier *id); Dsymbol *syntaxCopy(Dsymbol *); void semantic(Scope *sc); void toCBuffer(OutBuffer *buf, HdrGenState *hgs); int isVirtual(); int addPreInvariant(); int addPostInvariant(); int overloadInsert(Dsymbol *s); void emitComment(Scope *sc); PostBlitDeclaration *isPostBlitDeclaration() { return this; } }; #endif struct DtorDeclaration : FuncDeclaration { DtorDeclaration(Loc loc, Loc endloc); DtorDeclaration(Loc loc, Loc endloc, Identifier *id); Dsymbol *syntaxCopy(Dsymbol *); void semantic(Scope *sc); void toCBuffer(OutBuffer *buf, HdrGenState *hgs); int isVirtual(); int addPreInvariant(); int addPostInvariant(); int overloadInsert(Dsymbol *s); void emitComment(Scope *sc); DtorDeclaration *isDtorDeclaration() { return this; } }; struct StaticCtorDeclaration : FuncDeclaration { StaticCtorDeclaration(Loc loc, Loc endloc); Dsymbol *syntaxCopy(Dsymbol *); void semantic(Scope *sc); AggregateDeclaration *isThis(); int isStaticConstructor(); int isVirtual(); int addPreInvariant(); int addPostInvariant(); void emitComment(Scope *sc); void toCBuffer(OutBuffer *buf, HdrGenState *hgs); StaticCtorDeclaration *isStaticCtorDeclaration() { return this; } }; struct StaticDtorDeclaration : FuncDeclaration { VarDeclaration *vgate; // 'gate' variable StaticDtorDeclaration(Loc loc, Loc endloc); Dsymbol *syntaxCopy(Dsymbol *); void semantic(Scope *sc); AggregateDeclaration *isThis(); int isStaticDestructor(); int isVirtual(); int addPreInvariant(); int addPostInvariant(); void emitComment(Scope *sc); void toCBuffer(OutBuffer *buf, HdrGenState *hgs); StaticDtorDeclaration *isStaticDtorDeclaration() { return this; } }; struct InvariantDeclaration : FuncDeclaration { InvariantDeclaration(Loc loc, Loc endloc); Dsymbol *syntaxCopy(Dsymbol *); void semantic(Scope *sc); int isVirtual(); int addPreInvariant(); int addPostInvariant(); void emitComment(Scope *sc); void toCBuffer(OutBuffer *buf, HdrGenState *hgs); InvariantDeclaration *isInvariantDeclaration() { return this; } }; struct UnitTestDeclaration : FuncDeclaration { UnitTestDeclaration(Loc loc, Loc endloc); Dsymbol *syntaxCopy(Dsymbol *); void semantic(Scope *sc); AggregateDeclaration *isThis(); int isVirtual(); int addPreInvariant(); int addPostInvariant(); void toCBuffer(OutBuffer *buf, HdrGenState *hgs); UnitTestDeclaration *isUnitTestDeclaration() { return this; } }; struct NewDeclaration : FuncDeclaration { Arguments *arguments; int varargs; NewDeclaration(Loc loc, Loc endloc, Arguments *arguments, int varargs); Dsymbol *syntaxCopy(Dsymbol *); void semantic(Scope *sc); void toCBuffer(OutBuffer *buf, HdrGenState *hgs); const char *kind(); int isVirtual(); int addPreInvariant(); int addPostInvariant(); NewDeclaration *isNewDeclaration() { return this; } }; struct DeleteDeclaration : FuncDeclaration { Arguments *arguments; DeleteDeclaration(Loc loc, Loc endloc, Arguments *arguments); Dsymbol *syntaxCopy(Dsymbol *); void semantic(Scope *sc); void toCBuffer(OutBuffer *buf, HdrGenState *hgs); const char *kind(); int isDelete(); int isVirtual(); int addPreInvariant(); int addPostInvariant(); #ifdef _DH DeleteDeclaration *isDeleteDeclaration() { return this; } #endif }; #endif /* DMD_DECLARATION_H */