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261 lines
8.1 KiB
C++
261 lines
8.1 KiB
C++
//===-- ParserInternals.h - Definitions internal to the parser --*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This header file defines the various variables that are shared among the
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// different components of the parser...
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//
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//===----------------------------------------------------------------------===//
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#ifndef PARSER_INTERNALS_H
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#define PARSER_INTERNALS_H
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#include "llvm/Constants.h"
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#include "llvm/DerivedTypes.h"
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#include "llvm/Attributes.h"
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#include "llvm/Function.h"
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#include "llvm/Instructions.h"
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#include "llvm/Assembly/Parser.h"
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#include "llvm/ADT/StringExtras.h"
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#include "llvm/ADT/APFloat.h"
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#include "llvm/ADT/APSInt.h"
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namespace llvm { class MemoryBuffer; }
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// Global variables exported from the lexer...
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extern llvm::ParseError* TheParseError; /// FIXME: Not threading friendly
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// functions exported from the lexer
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void InitLLLexer(llvm::MemoryBuffer *MB);
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const char *LLLgetTokenStart();
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unsigned LLLgetTokenLength();
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std::string LLLgetFilename();
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unsigned LLLgetLineNo();
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void FreeLexer();
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namespace llvm {
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class Module;
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// RunVMAsmParser - Parse a buffer and return Module
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Module *RunVMAsmParser(llvm::MemoryBuffer *MB);
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// GenerateError - Wrapper around the ParseException class that automatically
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// fills in file line number and column number and options info.
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//
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// This also helps me because I keep typing 'throw new ParseException' instead
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// of just 'throw ParseException'... sigh...
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//
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extern void GenerateError(const std::string &message, int LineNo = -1);
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/// InlineAsmDescriptor - This is a simple class that holds info about inline
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/// asm blocks, for use by ValID.
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struct InlineAsmDescriptor {
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std::string AsmString, Constraints;
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bool HasSideEffects;
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InlineAsmDescriptor(const std::string &as, const std::string &c, bool HSE)
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: AsmString(as), Constraints(c), HasSideEffects(HSE) {}
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};
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// ValID - Represents a reference of a definition of some sort. This may either
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// be a numeric reference or a symbolic (%var) reference. This is just a
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// discriminated union.
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//
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// Note that I can't implement this class in a straight forward manner with
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// constructors and stuff because it goes in a union.
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//
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struct ValID {
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enum {
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LocalID, GlobalID, LocalName, GlobalName,
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ConstSIntVal, ConstUIntVal, ConstAPInt, ConstFPVal, ConstNullVal,
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ConstUndefVal, ConstZeroVal, ConstantVal, InlineAsmVal
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} Type;
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union {
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unsigned Num; // If it's a numeric reference like %1234
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std::string *Name; // If it's a named reference. Memory must be deleted.
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int64_t ConstPool64; // Constant pool reference. This is the value
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uint64_t UConstPool64; // Unsigned constant pool reference.
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APSInt *ConstPoolInt; // Large Integer constant pool reference
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APFloat *ConstPoolFP; // Floating point constant pool reference
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Constant *ConstantValue; // Fully resolved constant for ConstantVal case.
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InlineAsmDescriptor *IAD;
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};
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static ValID createLocalID(unsigned Num) {
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ValID D; D.Type = LocalID; D.Num = Num; return D;
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}
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static ValID createGlobalID(unsigned Num) {
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ValID D; D.Type = GlobalID; D.Num = Num; return D;
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}
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static ValID createLocalName(const std::string &Name) {
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ValID D; D.Type = LocalName; D.Name = new std::string(Name); return D;
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}
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static ValID createGlobalName(const std::string &Name) {
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ValID D; D.Type = GlobalName; D.Name = new std::string(Name); return D;
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}
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static ValID create(int64_t Val) {
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ValID D; D.Type = ConstSIntVal; D.ConstPool64 = Val; return D;
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}
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static ValID create(uint64_t Val) {
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ValID D; D.Type = ConstUIntVal; D.UConstPool64 = Val; return D;
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}
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static ValID create(APFloat *Val) {
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ValID D; D.Type = ConstFPVal; D.ConstPoolFP = Val; return D;
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}
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static ValID create(const APInt &Val, bool isSigned) {
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ValID D; D.Type = ConstAPInt;
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D.ConstPoolInt = new APSInt(Val, !isSigned);
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return D;
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}
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static ValID createNull() {
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ValID D; D.Type = ConstNullVal; return D;
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}
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static ValID createUndef() {
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ValID D; D.Type = ConstUndefVal; return D;
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}
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static ValID createZeroInit() {
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ValID D; D.Type = ConstZeroVal; return D;
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}
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static ValID create(Constant *Val) {
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ValID D; D.Type = ConstantVal; D.ConstantValue = Val; return D;
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}
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static ValID createInlineAsm(const std::string &AsmString,
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const std::string &Constraints,
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bool HasSideEffects) {
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ValID D;
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D.Type = InlineAsmVal;
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D.IAD = new InlineAsmDescriptor(AsmString, Constraints, HasSideEffects);
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return D;
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}
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inline void destroy() const {
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if (Type == LocalName || Type == GlobalName)
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delete Name; // Free this strdup'd memory.
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else if (Type == InlineAsmVal)
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delete IAD;
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else if (Type == ConstAPInt)
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delete ConstPoolInt;
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else if (Type == ConstFPVal)
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delete ConstPoolFP;
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}
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inline ValID copy() const {
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ValID Result = *this;
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if (Type == ConstAPInt)
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Result.ConstPoolInt = new APSInt(*ConstPoolInt);
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if (Type != LocalName && Type != GlobalName) return Result;
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Result.Name = new std::string(*Name);
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return Result;
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}
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inline std::string getName() const {
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switch (Type) {
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case LocalID : return '%' + utostr(Num);
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case GlobalID : return '@' + utostr(Num);
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case LocalName : return *Name;
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case GlobalName : return *Name;
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case ConstAPInt : return ConstPoolInt->toString(10);
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case ConstFPVal : return ftostr(*ConstPoolFP);
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case ConstNullVal : return "null";
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case ConstUndefVal : return "undef";
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case ConstZeroVal : return "zeroinitializer";
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case ConstUIntVal :
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case ConstSIntVal : return std::string("%") + itostr(ConstPool64);
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case ConstantVal:
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if (ConstantValue == ConstantInt::getTrue()) return "true";
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if (ConstantValue == ConstantInt::getFalse()) return "false";
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return "<constant expression>";
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default:
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assert(0 && "Unknown value!");
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abort();
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return "";
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}
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}
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bool operator<(const ValID &V) const {
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if (Type != V.Type) return Type < V.Type;
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switch (Type) {
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case LocalID:
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case GlobalID: return Num < V.Num;
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case LocalName:
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case GlobalName: return *Name < *V.Name;
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case ConstSIntVal: return ConstPool64 < V.ConstPool64;
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case ConstUIntVal: return UConstPool64 < V.UConstPool64;
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case ConstAPInt: return ConstPoolInt->ult(*V.ConstPoolInt);
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case ConstFPVal: return ConstPoolFP->compare(*V.ConstPoolFP) ==
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APFloat::cmpLessThan;
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case ConstNullVal: return false;
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case ConstUndefVal: return false;
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case ConstZeroVal: return false;
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case ConstantVal: return ConstantValue < V.ConstantValue;
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default: assert(0 && "Unknown value type!"); return false;
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}
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}
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bool operator==(const ValID &V) const {
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if (Type != V.Type) return false;
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switch (Type) {
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default: assert(0 && "Unknown value type!");
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case LocalID:
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case GlobalID: return Num == V.Num;
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case LocalName:
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case GlobalName: return *Name == *(V.Name);
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case ConstSIntVal: return ConstPool64 == V.ConstPool64;
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case ConstUIntVal: return UConstPool64 == V.UConstPool64;
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case ConstAPInt: return *ConstPoolInt == *V.ConstPoolInt;
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case ConstFPVal: return ConstPoolFP->compare(*V.ConstPoolFP) ==
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APFloat::cmpEqual;
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case ConstantVal: return ConstantValue == V.ConstantValue;
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case ConstNullVal: return true;
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case ConstUndefVal: return true;
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case ConstZeroVal: return true;
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}
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}
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};
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struct TypeWithAttrs {
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llvm::PATypeHolder *Ty;
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Attributes Attrs;
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};
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typedef std::vector<TypeWithAttrs> TypeWithAttrsList;
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struct ArgListEntry {
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Attributes Attrs;
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llvm::PATypeHolder *Ty;
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std::string *Name;
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};
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typedef std::vector<struct ArgListEntry> ArgListType;
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struct ParamListEntry {
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Value *Val;
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Attributes Attrs;
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};
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typedef std::vector<ParamListEntry> ParamList;
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} // End llvm namespace
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#endif
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