diff options
author | orivej <orivej@yandex-team.ru> | 2022-02-10 16:44:49 +0300 |
---|---|---|
committer | Daniil Cherednik <dcherednik@yandex-team.ru> | 2022-02-10 16:44:49 +0300 |
commit | 718c552901d703c502ccbefdfc3c9028d608b947 (patch) | |
tree | 46534a98bbefcd7b1f3faa5b52c138ab27db75b7 /contrib/libs/llvm12/lib/TableGen/TGParser.h | |
parent | e9656aae26e0358d5378e5b63dcac5c8dbe0e4d0 (diff) | |
download | ydb-718c552901d703c502ccbefdfc3c9028d608b947.tar.gz |
Restoring authorship annotation for <orivej@yandex-team.ru>. Commit 1 of 2.
Diffstat (limited to 'contrib/libs/llvm12/lib/TableGen/TGParser.h')
-rw-r--r-- | contrib/libs/llvm12/lib/TableGen/TGParser.h | 536 |
1 files changed, 268 insertions, 268 deletions
diff --git a/contrib/libs/llvm12/lib/TableGen/TGParser.h b/contrib/libs/llvm12/lib/TableGen/TGParser.h index 578a56c9d0..1a5e41229f 100644 --- a/contrib/libs/llvm12/lib/TableGen/TGParser.h +++ b/contrib/libs/llvm12/lib/TableGen/TGParser.h @@ -1,273 +1,273 @@ -//===- TGParser.h - Parser for TableGen Files -------------------*- C++ -*-===// -// -// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. -// See https://llvm.org/LICENSE.txt for license information. -// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception -// -//===----------------------------------------------------------------------===// -// -// This class represents the Parser for tablegen files. -// -//===----------------------------------------------------------------------===// - -#ifndef LLVM_LIB_TABLEGEN_TGPARSER_H -#define LLVM_LIB_TABLEGEN_TGPARSER_H - -#include "TGLexer.h" -#include "llvm/TableGen/Error.h" -#include "llvm/TableGen/Record.h" -#include <map> - -namespace llvm { - class SourceMgr; - class Twine; - struct ForeachLoop; - struct MultiClass; - struct SubClassReference; - struct SubMultiClassReference; - - struct LetRecord { - StringInit *Name; - std::vector<unsigned> Bits; - Init *Value; - SMLoc Loc; - LetRecord(StringInit *N, ArrayRef<unsigned> B, Init *V, SMLoc L) - : Name(N), Bits(B), Value(V), Loc(L) { - } - }; - - /// RecordsEntry - Can be either a record or a foreach loop. - struct RecordsEntry { - std::unique_ptr<Record> Rec; - std::unique_ptr<ForeachLoop> Loop; - - void dump() const; - - RecordsEntry() {} - RecordsEntry(std::unique_ptr<Record> Rec) : Rec(std::move(Rec)) {} - RecordsEntry(std::unique_ptr<ForeachLoop> Loop) - : Loop(std::move(Loop)) {} - }; - - /// ForeachLoop - Record the iteration state associated with a for loop. - /// This is used to instantiate items in the loop body. - /// - /// IterVar is allowed to be null, in which case no iteration variable is - /// defined in the loop at all. (This happens when a ForeachLoop is - /// constructed by desugaring an if statement.) - struct ForeachLoop { - SMLoc Loc; - VarInit *IterVar; - Init *ListValue; - std::vector<RecordsEntry> Entries; - - void dump() const; - - ForeachLoop(SMLoc Loc, VarInit *IVar, Init *LValue) - : Loc(Loc), IterVar(IVar), ListValue(LValue) {} - }; - - struct DefsetRecord { - SMLoc Loc; - RecTy *EltTy = nullptr; - SmallVector<Init *, 16> Elements; - }; - -class TGLocalVarScope { - // A scope to hold local variable definitions from defvar. - std::map<std::string, Init *, std::less<>> vars; - std::unique_ptr<TGLocalVarScope> parent; - -public: - TGLocalVarScope() = default; - TGLocalVarScope(std::unique_ptr<TGLocalVarScope> parent) - : parent(std::move(parent)) {} - - std::unique_ptr<TGLocalVarScope> extractParent() { - // This is expected to be called just before we are destructed, so - // it doesn't much matter what state we leave 'parent' in. - return std::move(parent); - } - - Init *getVar(StringRef Name) const { - auto It = vars.find(Name); - if (It != vars.end()) - return It->second; - if (parent) - return parent->getVar(Name); - return nullptr; - } - - bool varAlreadyDefined(StringRef Name) const { - // When we check whether a variable is already defined, for the purpose of - // reporting an error on redefinition, we don't look up to the parent - // scope, because it's all right to shadow an outer definition with an - // inner one. - return vars.find(Name) != vars.end(); - } - - void addVar(StringRef Name, Init *I) { - bool Ins = vars.insert(std::make_pair(std::string(Name), I)).second; - (void)Ins; - assert(Ins && "Local variable already exists"); - } -}; - -struct MultiClass { - Record Rec; // Placeholder for template args and Name. - std::vector<RecordsEntry> Entries; - - void dump() const; - - MultiClass(StringRef Name, SMLoc Loc, RecordKeeper &Records) : - Rec(Name, Loc, Records) {} -}; - -class TGParser { - TGLexer Lex; - std::vector<SmallVector<LetRecord, 4>> LetStack; - std::map<std::string, std::unique_ptr<MultiClass>> MultiClasses; - - /// Loops - Keep track of any foreach loops we are within. - /// - std::vector<std::unique_ptr<ForeachLoop>> Loops; - - SmallVector<DefsetRecord *, 2> Defsets; - - /// CurMultiClass - If we are parsing a 'multiclass' definition, this is the - /// current value. - MultiClass *CurMultiClass; - - /// CurLocalScope - Innermost of the current nested scopes for 'defvar' local - /// variables. - std::unique_ptr<TGLocalVarScope> CurLocalScope; - - // Record tracker - RecordKeeper &Records; - - // A "named boolean" indicating how to parse identifiers. Usually - // identifiers map to some existing object but in special cases - // (e.g. parsing def names) no such object exists yet because we are - // in the middle of creating in. For those situations, allow the - // parser to ignore missing object errors. - enum IDParseMode { - ParseValueMode, // We are parsing a value we expect to look up. - ParseNameMode, // We are parsing a name of an object that does not yet - // exist. - }; - -public: - TGParser(SourceMgr &SM, ArrayRef<std::string> Macros, - RecordKeeper &records) - : Lex(SM, Macros), CurMultiClass(nullptr), Records(records) {} - - /// ParseFile - Main entrypoint for parsing a tblgen file. These parser - /// routines return true on error, or false on success. - bool ParseFile(); - - bool Error(SMLoc L, const Twine &Msg) const { - PrintError(L, Msg); - return true; - } - bool TokError(const Twine &Msg) const { - return Error(Lex.getLoc(), Msg); - } - const TGLexer::DependenciesSetTy &getDependencies() const { - return Lex.getDependencies(); - } - - TGLocalVarScope *PushLocalScope() { - CurLocalScope = std::make_unique<TGLocalVarScope>(std::move(CurLocalScope)); - // Returns a pointer to the new scope, so that the caller can pass it back - // to PopLocalScope which will check by assertion that the pushes and pops - // match up properly. - return CurLocalScope.get(); - } - void PopLocalScope(TGLocalVarScope *ExpectedStackTop) { - assert(ExpectedStackTop == CurLocalScope.get() && - "Mismatched pushes and pops of local variable scopes"); - CurLocalScope = CurLocalScope->extractParent(); - } - -private: // Semantic analysis methods. - bool AddValue(Record *TheRec, SMLoc Loc, const RecordVal &RV); - bool SetValue(Record *TheRec, SMLoc Loc, Init *ValName, - ArrayRef<unsigned> BitList, Init *V, - bool AllowSelfAssignment = false); - bool AddSubClass(Record *Rec, SubClassReference &SubClass); - bool AddSubClass(RecordsEntry &Entry, SubClassReference &SubClass); - bool AddSubMultiClass(MultiClass *CurMC, - SubMultiClassReference &SubMultiClass); - - using SubstStack = SmallVector<std::pair<Init *, Init *>, 8>; - - bool addEntry(RecordsEntry E); - bool resolve(const ForeachLoop &Loop, SubstStack &Stack, bool Final, - std::vector<RecordsEntry> *Dest, SMLoc *Loc = nullptr); - bool resolve(const std::vector<RecordsEntry> &Source, SubstStack &Substs, - bool Final, std::vector<RecordsEntry> *Dest, - SMLoc *Loc = nullptr); - bool addDefOne(std::unique_ptr<Record> Rec); - -private: // Parser methods. - bool consume(tgtok::TokKind K); - bool ParseObjectList(MultiClass *MC = nullptr); - bool ParseObject(MultiClass *MC); - bool ParseClass(); - bool ParseMultiClass(); - bool ParseDefm(MultiClass *CurMultiClass); - bool ParseDef(MultiClass *CurMultiClass); - bool ParseDefset(); - bool ParseDefvar(); - bool ParseForeach(MultiClass *CurMultiClass); - bool ParseIf(MultiClass *CurMultiClass); - bool ParseIfBody(MultiClass *CurMultiClass, StringRef Kind); +//===- TGParser.h - Parser for TableGen Files -------------------*- C++ -*-===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This class represents the Parser for tablegen files. +// +//===----------------------------------------------------------------------===// + +#ifndef LLVM_LIB_TABLEGEN_TGPARSER_H +#define LLVM_LIB_TABLEGEN_TGPARSER_H + +#include "TGLexer.h" +#include "llvm/TableGen/Error.h" +#include "llvm/TableGen/Record.h" +#include <map> + +namespace llvm { + class SourceMgr; + class Twine; + struct ForeachLoop; + struct MultiClass; + struct SubClassReference; + struct SubMultiClassReference; + + struct LetRecord { + StringInit *Name; + std::vector<unsigned> Bits; + Init *Value; + SMLoc Loc; + LetRecord(StringInit *N, ArrayRef<unsigned> B, Init *V, SMLoc L) + : Name(N), Bits(B), Value(V), Loc(L) { + } + }; + + /// RecordsEntry - Can be either a record or a foreach loop. + struct RecordsEntry { + std::unique_ptr<Record> Rec; + std::unique_ptr<ForeachLoop> Loop; + + void dump() const; + + RecordsEntry() {} + RecordsEntry(std::unique_ptr<Record> Rec) : Rec(std::move(Rec)) {} + RecordsEntry(std::unique_ptr<ForeachLoop> Loop) + : Loop(std::move(Loop)) {} + }; + + /// ForeachLoop - Record the iteration state associated with a for loop. + /// This is used to instantiate items in the loop body. + /// + /// IterVar is allowed to be null, in which case no iteration variable is + /// defined in the loop at all. (This happens when a ForeachLoop is + /// constructed by desugaring an if statement.) + struct ForeachLoop { + SMLoc Loc; + VarInit *IterVar; + Init *ListValue; + std::vector<RecordsEntry> Entries; + + void dump() const; + + ForeachLoop(SMLoc Loc, VarInit *IVar, Init *LValue) + : Loc(Loc), IterVar(IVar), ListValue(LValue) {} + }; + + struct DefsetRecord { + SMLoc Loc; + RecTy *EltTy = nullptr; + SmallVector<Init *, 16> Elements; + }; + +class TGLocalVarScope { + // A scope to hold local variable definitions from defvar. + std::map<std::string, Init *, std::less<>> vars; + std::unique_ptr<TGLocalVarScope> parent; + +public: + TGLocalVarScope() = default; + TGLocalVarScope(std::unique_ptr<TGLocalVarScope> parent) + : parent(std::move(parent)) {} + + std::unique_ptr<TGLocalVarScope> extractParent() { + // This is expected to be called just before we are destructed, so + // it doesn't much matter what state we leave 'parent' in. + return std::move(parent); + } + + Init *getVar(StringRef Name) const { + auto It = vars.find(Name); + if (It != vars.end()) + return It->second; + if (parent) + return parent->getVar(Name); + return nullptr; + } + + bool varAlreadyDefined(StringRef Name) const { + // When we check whether a variable is already defined, for the purpose of + // reporting an error on redefinition, we don't look up to the parent + // scope, because it's all right to shadow an outer definition with an + // inner one. + return vars.find(Name) != vars.end(); + } + + void addVar(StringRef Name, Init *I) { + bool Ins = vars.insert(std::make_pair(std::string(Name), I)).second; + (void)Ins; + assert(Ins && "Local variable already exists"); + } +}; + +struct MultiClass { + Record Rec; // Placeholder for template args and Name. + std::vector<RecordsEntry> Entries; + + void dump() const; + + MultiClass(StringRef Name, SMLoc Loc, RecordKeeper &Records) : + Rec(Name, Loc, Records) {} +}; + +class TGParser { + TGLexer Lex; + std::vector<SmallVector<LetRecord, 4>> LetStack; + std::map<std::string, std::unique_ptr<MultiClass>> MultiClasses; + + /// Loops - Keep track of any foreach loops we are within. + /// + std::vector<std::unique_ptr<ForeachLoop>> Loops; + + SmallVector<DefsetRecord *, 2> Defsets; + + /// CurMultiClass - If we are parsing a 'multiclass' definition, this is the + /// current value. + MultiClass *CurMultiClass; + + /// CurLocalScope - Innermost of the current nested scopes for 'defvar' local + /// variables. + std::unique_ptr<TGLocalVarScope> CurLocalScope; + + // Record tracker + RecordKeeper &Records; + + // A "named boolean" indicating how to parse identifiers. Usually + // identifiers map to some existing object but in special cases + // (e.g. parsing def names) no such object exists yet because we are + // in the middle of creating in. For those situations, allow the + // parser to ignore missing object errors. + enum IDParseMode { + ParseValueMode, // We are parsing a value we expect to look up. + ParseNameMode, // We are parsing a name of an object that does not yet + // exist. + }; + +public: + TGParser(SourceMgr &SM, ArrayRef<std::string> Macros, + RecordKeeper &records) + : Lex(SM, Macros), CurMultiClass(nullptr), Records(records) {} + + /// ParseFile - Main entrypoint for parsing a tblgen file. These parser + /// routines return true on error, or false on success. + bool ParseFile(); + + bool Error(SMLoc L, const Twine &Msg) const { + PrintError(L, Msg); + return true; + } + bool TokError(const Twine &Msg) const { + return Error(Lex.getLoc(), Msg); + } + const TGLexer::DependenciesSetTy &getDependencies() const { + return Lex.getDependencies(); + } + + TGLocalVarScope *PushLocalScope() { + CurLocalScope = std::make_unique<TGLocalVarScope>(std::move(CurLocalScope)); + // Returns a pointer to the new scope, so that the caller can pass it back + // to PopLocalScope which will check by assertion that the pushes and pops + // match up properly. + return CurLocalScope.get(); + } + void PopLocalScope(TGLocalVarScope *ExpectedStackTop) { + assert(ExpectedStackTop == CurLocalScope.get() && + "Mismatched pushes and pops of local variable scopes"); + CurLocalScope = CurLocalScope->extractParent(); + } + +private: // Semantic analysis methods. + bool AddValue(Record *TheRec, SMLoc Loc, const RecordVal &RV); + bool SetValue(Record *TheRec, SMLoc Loc, Init *ValName, + ArrayRef<unsigned> BitList, Init *V, + bool AllowSelfAssignment = false); + bool AddSubClass(Record *Rec, SubClassReference &SubClass); + bool AddSubClass(RecordsEntry &Entry, SubClassReference &SubClass); + bool AddSubMultiClass(MultiClass *CurMC, + SubMultiClassReference &SubMultiClass); + + using SubstStack = SmallVector<std::pair<Init *, Init *>, 8>; + + bool addEntry(RecordsEntry E); + bool resolve(const ForeachLoop &Loop, SubstStack &Stack, bool Final, + std::vector<RecordsEntry> *Dest, SMLoc *Loc = nullptr); + bool resolve(const std::vector<RecordsEntry> &Source, SubstStack &Substs, + bool Final, std::vector<RecordsEntry> *Dest, + SMLoc *Loc = nullptr); + bool addDefOne(std::unique_ptr<Record> Rec); + +private: // Parser methods. + bool consume(tgtok::TokKind K); + bool ParseObjectList(MultiClass *MC = nullptr); + bool ParseObject(MultiClass *MC); + bool ParseClass(); + bool ParseMultiClass(); + bool ParseDefm(MultiClass *CurMultiClass); + bool ParseDef(MultiClass *CurMultiClass); + bool ParseDefset(); + bool ParseDefvar(); + bool ParseForeach(MultiClass *CurMultiClass); + bool ParseIf(MultiClass *CurMultiClass); + bool ParseIfBody(MultiClass *CurMultiClass, StringRef Kind); bool ParseAssert(MultiClass *CurMultiClass, Record *CurRec); - bool ParseTopLevelLet(MultiClass *CurMultiClass); - void ParseLetList(SmallVectorImpl<LetRecord> &Result); - - bool ParseObjectBody(Record *CurRec); - bool ParseBody(Record *CurRec); - bool ParseBodyItem(Record *CurRec); - - bool ParseTemplateArgList(Record *CurRec); - Init *ParseDeclaration(Record *CurRec, bool ParsingTemplateArgs); - VarInit *ParseForeachDeclaration(Init *&ForeachListValue); - - SubClassReference ParseSubClassReference(Record *CurRec, bool isDefm); - SubMultiClassReference ParseSubMultiClassReference(MultiClass *CurMC); - - Init *ParseIDValue(Record *CurRec, StringInit *Name, SMLoc NameLoc, - IDParseMode Mode = ParseValueMode); - Init *ParseSimpleValue(Record *CurRec, RecTy *ItemType = nullptr, - IDParseMode Mode = ParseValueMode); - Init *ParseValue(Record *CurRec, RecTy *ItemType = nullptr, - IDParseMode Mode = ParseValueMode); - void ParseValueList(SmallVectorImpl<llvm::Init*> &Result, Record *CurRec, - Record *ArgsRec = nullptr, RecTy *EltTy = nullptr); - void ParseDagArgList( - SmallVectorImpl<std::pair<llvm::Init*, StringInit*>> &Result, - Record *CurRec); - bool ParseOptionalRangeList(SmallVectorImpl<unsigned> &Ranges); - bool ParseOptionalBitList(SmallVectorImpl<unsigned> &Ranges); - void ParseRangeList(SmallVectorImpl<unsigned> &Result); - bool ParseRangePiece(SmallVectorImpl<unsigned> &Ranges, - TypedInit *FirstItem = nullptr); - RecTy *ParseType(); - Init *ParseOperation(Record *CurRec, RecTy *ItemType); + bool ParseTopLevelLet(MultiClass *CurMultiClass); + void ParseLetList(SmallVectorImpl<LetRecord> &Result); + + bool ParseObjectBody(Record *CurRec); + bool ParseBody(Record *CurRec); + bool ParseBodyItem(Record *CurRec); + + bool ParseTemplateArgList(Record *CurRec); + Init *ParseDeclaration(Record *CurRec, bool ParsingTemplateArgs); + VarInit *ParseForeachDeclaration(Init *&ForeachListValue); + + SubClassReference ParseSubClassReference(Record *CurRec, bool isDefm); + SubMultiClassReference ParseSubMultiClassReference(MultiClass *CurMC); + + Init *ParseIDValue(Record *CurRec, StringInit *Name, SMLoc NameLoc, + IDParseMode Mode = ParseValueMode); + Init *ParseSimpleValue(Record *CurRec, RecTy *ItemType = nullptr, + IDParseMode Mode = ParseValueMode); + Init *ParseValue(Record *CurRec, RecTy *ItemType = nullptr, + IDParseMode Mode = ParseValueMode); + void ParseValueList(SmallVectorImpl<llvm::Init*> &Result, Record *CurRec, + Record *ArgsRec = nullptr, RecTy *EltTy = nullptr); + void ParseDagArgList( + SmallVectorImpl<std::pair<llvm::Init*, StringInit*>> &Result, + Record *CurRec); + bool ParseOptionalRangeList(SmallVectorImpl<unsigned> &Ranges); + bool ParseOptionalBitList(SmallVectorImpl<unsigned> &Ranges); + void ParseRangeList(SmallVectorImpl<unsigned> &Result); + bool ParseRangePiece(SmallVectorImpl<unsigned> &Ranges, + TypedInit *FirstItem = nullptr); + RecTy *ParseType(); + Init *ParseOperation(Record *CurRec, RecTy *ItemType); Init *ParseOperationSubstr(Record *CurRec, RecTy *ItemType); Init *ParseOperationForEachFilter(Record *CurRec, RecTy *ItemType); - Init *ParseOperationCond(Record *CurRec, RecTy *ItemType); - RecTy *ParseOperatorType(); - Init *ParseObjectName(MultiClass *CurMultiClass); - Record *ParseClassID(); - MultiClass *ParseMultiClassID(); - bool ApplyLetStack(Record *CurRec); - bool ApplyLetStack(RecordsEntry &Entry); + Init *ParseOperationCond(Record *CurRec, RecTy *ItemType); + RecTy *ParseOperatorType(); + Init *ParseObjectName(MultiClass *CurMultiClass); + Record *ParseClassID(); + MultiClass *ParseMultiClassID(); + bool ApplyLetStack(Record *CurRec); + bool ApplyLetStack(RecordsEntry &Entry); void CheckAssert(SMLoc Loc, Init *Condition, Init *Message); void CheckRecordAsserts(Record &Rec); -}; - -} // end namespace llvm - -#endif +}; + +} // end namespace llvm + +#endif |