blob: 61de652c516316a5fb7c02be68ff223a8d5c40d0 [file] [log] [blame]
//===-- ParserInternals.h - Definitions internal to the parser --*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file was developed by the LLVM research group and is distributed under
// the University of Illinois Open Source License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This header file defines the various variables that are shared among the
// different components of the parser...
//
//===----------------------------------------------------------------------===//
#ifndef PARSER_INTERNALS_H
#define PARSER_INTERNALS_H
#include "llvm/Constants.h"
#include "llvm/DerivedTypes.h"
#include "llvm/ParameterAttributes.h"
#include "llvm/Function.h"
#include "llvm/Instructions.h"
#include "llvm/Assembly/Parser.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/ADT/APFloat.h"
// Global variables exported from the lexer...
extern int llvmAsmlineno; /// FIXME: Not threading friendly
extern llvm::ParseError* TheParseError; /// FIXME: Not threading friendly
extern std::string &llvmAsmTextin;
// functions exported from the lexer
void set_scan_file(FILE * F);
void set_scan_string (const char * str);
// Globals exported by the parser...
extern char* llvmAsmtext;
extern int llvmAsmleng;
namespace llvm {
class Module;
// Globals exported by the parser...
extern std::string CurFilename; /// FIXME: Not threading friendly
// RunVMAsmParser - Parse a file and return Module
Module *RunVMAsmParser(const std::string &Filename, FILE *F);
// Parse a string directly
Module *RunVMAsmParser(const char * AsmString, Module * M);
// UnEscapeLexed - Run through the specified buffer and change \xx codes to the
// appropriate character.
char *UnEscapeLexed(char *Buffer);
// GenerateError - Wrapper around the ParseException class that automatically
// fills in file line number and column number and options info.
//
// This also helps me because I keep typing 'throw new ParseException' instead
// of just 'throw ParseException'... sigh...
//
extern void GenerateError(const std::string &message, int LineNo = -1);
/// InlineAsmDescriptor - This is a simple class that holds info about inline
/// asm blocks, for use by ValID.
struct InlineAsmDescriptor {
std::string AsmString, Constraints;
bool HasSideEffects;
InlineAsmDescriptor(const std::string &as, const std::string &c, bool HSE)
: AsmString(as), Constraints(c), HasSideEffects(HSE) {}
};
// ValID - Represents a reference of a definition of some sort. This may either
// be a numeric reference or a symbolic (%var) reference. This is just a
// discriminated union.
//
// Note that I can't implement this class in a straight forward manner with
// constructors and stuff because it goes in a union.
//
struct ValID {
enum {
LocalID, GlobalID, LocalName, GlobalName,
ConstSIntVal, ConstUIntVal, ConstFPVal, ConstNullVal,
ConstUndefVal, ConstZeroVal, ConstantVal, InlineAsmVal
} Type;
union {
unsigned Num; // If it's a numeric reference like %1234
std::string *Name; // If it's a named reference. Memory must be deleted.
int64_t ConstPool64; // Constant pool reference. This is the value
uint64_t UConstPool64;// Unsigned constant pool reference.
APFloat *ConstPoolFP; // Floating point constant pool reference
Constant *ConstantValue; // Fully resolved constant for ConstantVal case.
InlineAsmDescriptor *IAD;
};
static ValID createLocalID(unsigned Num) {
ValID D; D.Type = LocalID; D.Num = Num; return D;
}
static ValID createGlobalID(unsigned Num) {
ValID D; D.Type = GlobalID; D.Num = Num; return D;
}
static ValID createLocalName(const std::string &Name) {
ValID D; D.Type = LocalName; D.Name = new std::string(Name); return D;
}
static ValID createGlobalName(const std::string &Name) {
ValID D; D.Type = GlobalName; D.Name = new std::string(Name); return D;
}
static ValID create(int64_t Val) {
ValID D; D.Type = ConstSIntVal; D.ConstPool64 = Val; return D;
}
static ValID create(uint64_t Val) {
ValID D; D.Type = ConstUIntVal; D.UConstPool64 = Val; return D;
}
static ValID create(APFloat *Val) {
ValID D; D.Type = ConstFPVal; D.ConstPoolFP = Val; return D;
}
static ValID createNull() {
ValID D; D.Type = ConstNullVal; return D;
}
static ValID createUndef() {
ValID D; D.Type = ConstUndefVal; return D;
}
static ValID createZeroInit() {
ValID D; D.Type = ConstZeroVal; return D;
}
static ValID create(Constant *Val) {
ValID D; D.Type = ConstantVal; D.ConstantValue = Val; return D;
}
static ValID createInlineAsm(const std::string &AsmString,
const std::string &Constraints,
bool HasSideEffects) {
ValID D;
D.Type = InlineAsmVal;
D.IAD = new InlineAsmDescriptor(AsmString, Constraints, HasSideEffects);
return D;
}
inline void destroy() const {
if (Type == LocalName || Type == GlobalName)
delete Name; // Free this strdup'd memory.
else if (Type == InlineAsmVal)
delete IAD;
}
inline ValID copy() const {
if (Type != LocalName && Type != GlobalName) return *this;
ValID Result = *this;
Result.Name = new std::string(*Name);
return Result;
}
inline std::string getName() const {
switch (Type) {
case LocalID : return '%' + utostr(Num);
case GlobalID : return '@' + utostr(Num);
case LocalName : return *Name;
case GlobalName : return *Name;
case ConstFPVal : return ftostr(*ConstPoolFP);
case ConstNullVal : return "null";
case ConstUndefVal : return "undef";
case ConstZeroVal : return "zeroinitializer";
case ConstUIntVal :
case ConstSIntVal : return std::string("%") + itostr(ConstPool64);
case ConstantVal:
if (ConstantValue == ConstantInt::getTrue()) return "true";
if (ConstantValue == ConstantInt::getFalse()) return "false";
return "<constant expression>";
default:
assert(0 && "Unknown value!");
abort();
return "";
}
}
bool operator<(const ValID &V) const {
if (Type != V.Type) return Type < V.Type;
switch (Type) {
case LocalID:
case GlobalID: return Num < V.Num;
case LocalName:
case GlobalName: return *Name < *V.Name;
case ConstSIntVal: return ConstPool64 < V.ConstPool64;
case ConstUIntVal: return UConstPool64 < V.UConstPool64;
case ConstFPVal: return ConstPoolFP->compare(*V.ConstPoolFP) ==
APFloat::cmpLessThan;
case ConstNullVal: return false;
case ConstUndefVal: return false;
case ConstZeroVal: return false;
case ConstantVal: return ConstantValue < V.ConstantValue;
default: assert(0 && "Unknown value type!"); return false;
}
}
bool operator==(const ValID &V) const {
if (Type == V.Type) {
switch (Type) {
case LocalID:
case GlobalID: return Num == V.Num;
case LocalName:
case GlobalName: return *Name == *(V.Name);
case ConstSIntVal: return ConstPool64 == V.ConstPool64;
case ConstUIntVal: return UConstPool64 == V.UConstPool64;
case ConstFPVal: return ConstPoolFP->compare(*V.ConstPoolFP) ==
APFloat::cmpEqual;
case ConstantVal: return ConstantValue == V.ConstantValue;
case ConstNullVal: return true;
case ConstUndefVal: return true;
case ConstZeroVal: return true;
default: assert(0 && "Unknown value type!"); return false;
}
}
return false;
}
};
struct TypeWithAttrs {
llvm::PATypeHolder *Ty;
uint16_t Attrs;
};
typedef std::vector<TypeWithAttrs> TypeWithAttrsList;
struct ArgListEntry {
uint16_t Attrs;
llvm::PATypeHolder *Ty;
std::string *Name;
};
typedef std::vector<struct ArgListEntry> ArgListType;
struct ValueRefListEntry {
Value *Val;
uint16_t Attrs;
};
typedef std::vector<ValueRefListEntry> ValueRefList;
} // End llvm namespace
#endif