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1242be25d0
The codegen parameter was changed to IRState instead of removing it to set the stage for an eventual eradication of the gIR global.
407 lines
13 KiB
C++
407 lines
13 KiB
C++
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// Compiler implementation of the D programming language
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// Copyright (c) 1999-2012 by Digital Mars
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// All Rights Reserved
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// written by Walter Bright
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// http://www.digitalmars.com
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// License for redistribution is by either the Artistic License
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// in artistic.txt, or the GNU General Public License in gnu.txt.
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// See the included readme.txt for details.
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#ifndef DMD_TEMPLATE_H
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#define DMD_TEMPLATE_H
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#ifdef __DMC__
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#pragma once
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#endif /* __DMC__ */
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#if IN_LLVM
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#include <string>
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#endif
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#include "root.h"
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#include "arraytypes.h"
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#include "dsymbol.h"
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struct OutBuffer;
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struct Identifier;
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struct TemplateInstance;
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struct TemplateParameter;
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struct TemplateTypeParameter;
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struct TemplateThisParameter;
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struct TemplateValueParameter;
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struct TemplateAliasParameter;
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struct TemplateTupleParameter;
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struct Type;
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struct TypeQualified;
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struct TypeTypeof;
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struct Scope;
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struct Expression;
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struct AliasDeclaration;
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struct FuncDeclaration;
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struct HdrGenState;
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struct Parameter;
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enum MATCH;
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enum PASS;
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struct Tuple : Object
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{
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Objects objects;
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int dyncast() { return DYNCAST_TUPLE; } // kludge for template.isType()
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};
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struct TemplateDeclaration : ScopeDsymbol
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{
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TemplateParameters *parameters; // array of TemplateParameter's
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TemplateParameters *origParameters; // originals for Ddoc
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Expression *constraint;
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TemplateInstances instances; // array of TemplateInstance's
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TemplateDeclaration *overnext; // next overloaded TemplateDeclaration
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TemplateDeclaration *overroot; // first in overnext list
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enum PASS semanticRun; // 1 semantic() run
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Dsymbol *onemember; // if !=NULL then one member of this template
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int literal; // this template declaration is a literal
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int ismixin; // template declaration is only to be used as a mixin
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enum PROT protection;
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struct Previous
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{ Previous *prev;
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Scope *sc;
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Objects *dedargs;
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};
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Previous *previous; // threaded list of previous instantiation attempts on stack
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TemplateDeclaration(Loc loc, Identifier *id, TemplateParameters *parameters,
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Expression *constraint, Dsymbols *decldefs, int ismixin);
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Dsymbol *syntaxCopy(Dsymbol *);
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void semantic(Scope *sc);
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int overloadInsert(Dsymbol *s);
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void toCBuffer(OutBuffer *buf, HdrGenState *hgs);
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bool hasStaticCtorOrDtor();
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const char *kind();
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char *toChars();
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void emitComment(Scope *sc);
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void toJson(JsonOut *json);
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virtual void jsonProperties(JsonOut *json);
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enum PROT prot();
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// void toDocBuffer(OutBuffer *buf);
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MATCH matchWithInstance(TemplateInstance *ti, Objects *atypes, Expressions *fargs, int flag);
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MATCH leastAsSpecialized(TemplateDeclaration *td2, Expressions *fargs);
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MATCH deduceFunctionTemplateMatch(Loc loc, Scope *sc, Objects *tiargs, Type *tthis, Expressions *fargs, Objects *dedargs);
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FuncDeclaration *deduceFunctionTemplate(Loc loc, Scope *sc, Objects *tiargs, Type *tthis, Expressions *fargs, int flags = 0);
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Object *declareParameter(Scope *sc, TemplateParameter *tp, Object *o);
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FuncDeclaration *doHeaderInstantiation(Scope *sc, Objects *tdargs, Type *tthis, Expressions *fargs);
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TemplateDeclaration *isTemplateDeclaration() { return this; }
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TemplateTupleParameter *isVariadic();
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int isOverloadable();
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void makeParamNamesVisibleInConstraint(Scope *paramscope, Expressions *fargs);
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#if IN_LLVM
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// LDC
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std::string intrinsicName;
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#endif
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};
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struct TemplateParameter
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{
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/* For type-parameter:
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* template Foo(ident) // specType is set to NULL
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* template Foo(ident : specType)
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* For value-parameter:
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* template Foo(valType ident) // specValue is set to NULL
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* template Foo(valType ident : specValue)
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* For alias-parameter:
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* template Foo(alias ident)
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* For this-parameter:
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* template Foo(this ident)
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*/
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Loc loc;
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Identifier *ident;
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Declaration *sparam;
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TemplateParameter(Loc loc, Identifier *ident);
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virtual TemplateTypeParameter *isTemplateTypeParameter();
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virtual TemplateValueParameter *isTemplateValueParameter();
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virtual TemplateAliasParameter *isTemplateAliasParameter();
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#if DMDV2
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virtual TemplateThisParameter *isTemplateThisParameter();
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#endif
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virtual TemplateTupleParameter *isTemplateTupleParameter();
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virtual TemplateParameter *syntaxCopy() = 0;
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virtual void declareParameter(Scope *sc) = 0;
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virtual void semantic(Scope *) = 0;
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virtual void print(Object *oarg, Object *oded) = 0;
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virtual void toCBuffer(OutBuffer *buf, HdrGenState *hgs) = 0;
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virtual Object *specialization() = 0;
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virtual Object *defaultArg(Loc loc, Scope *sc) = 0;
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/* If TemplateParameter's match as far as overloading goes.
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*/
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virtual int overloadMatch(TemplateParameter *) = 0;
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/* Match actual argument against parameter.
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*/
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virtual MATCH matchArg(Scope *sc, Objects *tiargs, size_t i, TemplateParameters *parameters, Objects *dedtypes, Declaration **psparam) = 0;
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/* Create dummy argument based on parameter.
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*/
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virtual void *dummyArg() = 0;
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};
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struct TemplateTypeParameter : TemplateParameter
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{
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/* Syntax:
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* ident : specType = defaultType
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*/
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Type *specType; // type parameter: if !=NULL, this is the type specialization
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Type *defaultType;
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static Type *tdummy;
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TemplateTypeParameter(Loc loc, Identifier *ident, Type *specType, Type *defaultType);
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TemplateTypeParameter *isTemplateTypeParameter();
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TemplateParameter *syntaxCopy();
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void declareParameter(Scope *sc);
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void semantic(Scope *);
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void print(Object *oarg, Object *oded);
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void toCBuffer(OutBuffer *buf, HdrGenState *hgs);
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Object *specialization();
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Object *defaultArg(Loc loc, Scope *sc);
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int overloadMatch(TemplateParameter *);
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MATCH matchArg(Scope *sc, Objects *tiargs, size_t i, TemplateParameters *parameters, Objects *dedtypes, Declaration **psparam);
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void *dummyArg();
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};
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#if DMDV2
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struct TemplateThisParameter : TemplateTypeParameter
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{
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/* Syntax:
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* this ident : specType = defaultType
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*/
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TemplateThisParameter(Loc loc, Identifier *ident, Type *specType, Type *defaultType);
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TemplateThisParameter *isTemplateThisParameter();
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TemplateParameter *syntaxCopy();
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void toCBuffer(OutBuffer *buf, HdrGenState *hgs);
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};
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#endif
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struct TemplateValueParameter : TemplateParameter
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{
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/* Syntax:
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* valType ident : specValue = defaultValue
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*/
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Type *valType;
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Expression *specValue;
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Expression *defaultValue;
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static AA *edummies;
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TemplateValueParameter(Loc loc, Identifier *ident, Type *valType, Expression *specValue, Expression *defaultValue);
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TemplateValueParameter *isTemplateValueParameter();
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TemplateParameter *syntaxCopy();
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void declareParameter(Scope *sc);
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void semantic(Scope *);
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void print(Object *oarg, Object *oded);
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void toCBuffer(OutBuffer *buf, HdrGenState *hgs);
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Object *specialization();
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Object *defaultArg(Loc loc, Scope *sc);
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int overloadMatch(TemplateParameter *);
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MATCH matchArg(Scope *sc, Objects *tiargs, size_t i, TemplateParameters *parameters, Objects *dedtypes, Declaration **psparam);
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void *dummyArg();
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};
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struct TemplateAliasParameter : TemplateParameter
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{
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/* Syntax:
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* specType ident : specAlias = defaultAlias
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*/
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Type *specType;
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Object *specAlias;
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Object *defaultAlias;
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static Dsymbol *sdummy;
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TemplateAliasParameter(Loc loc, Identifier *ident, Type *specType, Object *specAlias, Object *defaultAlias);
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TemplateAliasParameter *isTemplateAliasParameter();
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TemplateParameter *syntaxCopy();
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void declareParameter(Scope *sc);
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void semantic(Scope *);
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void print(Object *oarg, Object *oded);
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void toCBuffer(OutBuffer *buf, HdrGenState *hgs);
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Object *specialization();
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Object *defaultArg(Loc loc, Scope *sc);
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int overloadMatch(TemplateParameter *);
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MATCH matchArg(Scope *sc, Objects *tiargs, size_t i, TemplateParameters *parameters, Objects *dedtypes, Declaration **psparam);
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void *dummyArg();
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};
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struct TemplateTupleParameter : TemplateParameter
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{
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/* Syntax:
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* ident ...
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*/
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TemplateTupleParameter(Loc loc, Identifier *ident);
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TemplateTupleParameter *isTemplateTupleParameter();
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TemplateParameter *syntaxCopy();
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void declareParameter(Scope *sc);
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void semantic(Scope *);
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void print(Object *oarg, Object *oded);
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void toCBuffer(OutBuffer *buf, HdrGenState *hgs);
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Object *specialization();
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Object *defaultArg(Loc loc, Scope *sc);
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int overloadMatch(TemplateParameter *);
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MATCH matchArg(Scope *sc, Objects *tiargs, size_t i, TemplateParameters *parameters, Objects *dedtypes, Declaration **psparam);
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void *dummyArg();
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};
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struct TemplateInstance : ScopeDsymbol
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{
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/* Given:
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* foo!(args) =>
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* name = foo
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* tiargs = args
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*/
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Identifier *name;
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//Identifiers idents;
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Objects *tiargs; // Array of Types/Expressions of template
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// instance arguments [int*, char, 10*10]
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Objects tdtypes; // Array of Types/Expressions corresponding
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// to TemplateDeclaration.parameters
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// [int, char, 100]
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TemplateDeclaration *tempdecl; // referenced by foo.bar.abc
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TemplateInstance *inst; // refer to existing instance
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TemplateInstance *tinst; // enclosing template instance
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ScopeDsymbol *argsym; // argument symbol table
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AliasDeclaration *aliasdecl; // !=NULL if instance is an alias for its
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// sole member
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WithScopeSymbol *withsym; // if a member of a with statement
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enum PASS semanticRun; // has semantic() been done?
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int semantictiargsdone; // has semanticTiargs() been done?
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int nest; // for recursion detection
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int havetempdecl; // 1 if used second constructor
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Dsymbol *enclosing; // if referencing local symbols, this is the context
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int speculative; // 1 if only instantiated with errors gagged
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#ifdef IN_GCC
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/* On some targets, it is necessary to know whether a symbol
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will be emitted in the output or not before the symbol
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is used. This can be different from getModule(). */
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Module * objFileModule;
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#endif
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TemplateInstance(Loc loc, Identifier *temp_id);
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TemplateInstance(Loc loc, TemplateDeclaration *tempdecl, Objects *tiargs);
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static Objects *arraySyntaxCopy(Objects *objs);
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Dsymbol *syntaxCopy(Dsymbol *);
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void semantic(Scope *sc, Expressions *fargs);
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void semantic(Scope *sc);
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void semantic2(Scope *sc);
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void semantic3(Scope *sc);
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void inlineScan();
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void toCBuffer(OutBuffer *buf, HdrGenState *hgs);
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Dsymbol *toAlias(); // resolve real symbol
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const char *kind();
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int oneMember(Dsymbol **ps, Identifier *ident);
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int needsTypeInference(Scope *sc);
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char *toChars();
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const char *mangle(bool isv = false);
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void printInstantiationTrace();
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#if IN_DMD
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void toObjFile(int multiobj); // compile to .obj file
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#endif
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// Internal
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static void semanticTiargs(Loc loc, Scope *sc, Objects *tiargs, int flags);
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bool semanticTiargs(Scope *sc);
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bool findTemplateDeclaration(Scope *sc);
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bool findBestMatch(Scope *sc, Expressions *fargs);
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void declareParameters(Scope *sc);
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int hasNestedArgs(Objects *tiargs);
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Identifier *genIdent(Objects *args);
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void expandMembers(Scope *sc);
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void tryExpandMembers(Scope *sc);
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void trySemantic3(Scope *sc2);
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TemplateInstance *isTemplateInstance() { return this; }
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AliasDeclaration *isAliasDeclaration();
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#if IN_LLVM
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bool ignore; // true if the instance must be ignored when codegen'ing
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Module* emittedInModule; // which module this template instance has been emitted in
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void codegen(IRState*);
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#endif
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};
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struct TemplateMixin : TemplateInstance
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{
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TypeQualified *tqual;
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TemplateMixin(Loc loc, Identifier *ident, TypeQualified *tqual, Objects *tiargs);
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Dsymbol *syntaxCopy(Dsymbol *s);
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void semantic(Scope *sc);
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void semantic2(Scope *sc);
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void semantic3(Scope *sc);
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void inlineScan();
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const char *kind();
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int oneMember(Dsymbol **ps, Identifier *ident);
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int apply(Dsymbol_apply_ft_t fp, void *param);
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int hasPointers();
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void setFieldOffset(AggregateDeclaration *ad, unsigned *poffset, bool isunion);
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char *toChars();
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void toCBuffer(OutBuffer *buf, HdrGenState *hgs);
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void toJson(JsonOut *json);
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#if IN_DMD
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void toObjFile(int multiobj); // compile to .obj file
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#endif
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TemplateMixin *isTemplateMixin() { return this; }
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#if IN_LLVM
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void codegen(IRState*);
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#endif
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};
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Expression *isExpression(Object *o);
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Dsymbol *isDsymbol(Object *o);
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Type *isType(Object *o);
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Tuple *isTuple(Object *o);
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Parameter *isParameter(Object *o);
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int arrayObjectIsError(Objects *args);
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int isError(Object *o);
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Type *getType(Object *o);
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Dsymbol *getDsymbol(Object *o);
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void ObjectToCBuffer(OutBuffer *buf, HdrGenState *hgs, Object *oarg);
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Object *objectSyntaxCopy(Object *o);
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#endif /* DMD_TEMPLATE_H */
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