+#include "llvm/ADT/STLExtras.h"
#include "llvm/Analysis/BasicAliasAnalysis.h"
#include "llvm/Analysis/Passes.h"
#include "llvm/ExecutionEngine/ExecutionEngine.h"
/// NumberExprAST - Expression class for numeric literals like "1.0".
class NumberExprAST : public ExprAST {
double Val;
-
public:
- NumberExprAST(double val) : Val(val) {}
+ NumberExprAST(double Val) : Val(Val) {}
Value *Codegen() override;
};
/// VariableExprAST - Expression class for referencing a variable, like "a".
class VariableExprAST : public ExprAST {
std::string Name;
-
public:
- VariableExprAST(const std::string &name) : Name(name) {}
+ VariableExprAST(const std::string &Name) : Name(Name) {}
Value *Codegen() override;
};
/// BinaryExprAST - Expression class for a binary operator.
class BinaryExprAST : public ExprAST {
char Op;
- ExprAST *LHS, *RHS;
-
+ std::unique_ptr<ExprAST> LHS, RHS;
public:
- BinaryExprAST(char op, ExprAST *lhs, ExprAST *rhs)
- : Op(op), LHS(lhs), RHS(rhs) {}
+ BinaryExprAST(char Op, std::unique_ptr<ExprAST> LHS,
+ std::unique_ptr<ExprAST> RHS)
+ : Op(Op), LHS(std::move(LHS)), RHS(std::move(RHS)) {}
Value *Codegen() override;
};
/// CallExprAST - Expression class for function calls.
class CallExprAST : public ExprAST {
std::string Callee;
- std::vector<ExprAST *> Args;
-
+ std::vector<std::unique_ptr<ExprAST>> Args;
public:
- CallExprAST(const std::string &callee, std::vector<ExprAST *> &args)
- : Callee(callee), Args(args) {}
+ CallExprAST(const std::string &Callee,
+ std::vector<std::unique_ptr<ExprAST>> Args)
+ : Callee(Callee), Args(std::move(Args)) {}
Value *Codegen() override;
};
class PrototypeAST {
std::string Name;
std::vector<std::string> Args;
-
public:
- PrototypeAST(const std::string &name, const std::vector<std::string> &args)
- : Name(name), Args(args) {}
-
+ PrototypeAST(const std::string &name, std::vector<std::string> Args)
+ : Name(name), Args(std::move(Args)) {}
Function *Codegen();
};
/// FunctionAST - This class represents a function definition itself.
class FunctionAST {
- PrototypeAST *Proto;
- ExprAST *Body;
-
+ std::unique_ptr<PrototypeAST> Proto;
+ std::unique_ptr<ExprAST> Body;
public:
- FunctionAST(PrototypeAST *proto, ExprAST *body) : Proto(proto), Body(body) {}
-
+ FunctionAST(std::unique_ptr<PrototypeAST> Proto,
+ std::unique_ptr<ExprAST> Body)
+ : Proto(std::move(Proto)), Body(std::move(Body)) {}
Function *Codegen();
};
} // end anonymous namespace
}
/// Error* - These are little helper functions for error handling.
-ExprAST *Error(const char *Str) {
+std::unique_ptr<ExprAST> Error(const char *Str) {
fprintf(stderr, "Error: %s\n", Str);
- return 0;
+ return nullptr;
}
-PrototypeAST *ErrorP(const char *Str) {
+std::unique_ptr<PrototypeAST> ErrorP(const char *Str) {
Error(Str);
- return 0;
+ return nullptr;
}
-FunctionAST *ErrorF(const char *Str) {
+std::unique_ptr<FunctionAST> ErrorF(const char *Str) {
Error(Str);
- return 0;
+ return nullptr;
}
-static ExprAST *ParseExpression();
+static std::unique_ptr<ExprAST> ParseExpression();
/// identifierexpr
/// ::= identifier
/// ::= identifier '(' expression* ')'
-static ExprAST *ParseIdentifierExpr() {
+static std::unique_ptr<ExprAST> ParseIdentifierExpr() {
std::string IdName = IdentifierStr;
getNextToken(); // eat identifier.
if (CurTok != '(') // Simple variable ref.
- return new VariableExprAST(IdName);
+ return llvm::make_unique<VariableExprAST>(IdName);
// Call.
getNextToken(); // eat (
- std::vector<ExprAST *> Args;
+ std::vector<std::unique_ptr<ExprAST>> Args;
if (CurTok != ')') {
while (1) {
- ExprAST *Arg = ParseExpression();
- if (!Arg)
- return 0;
- Args.push_back(Arg);
+ if (auto Arg = ParseExpression())
+ Args.push_back(std::move(Arg));
+ else
+ return nullptr;
if (CurTok == ')')
break;
// Eat the ')'.
getNextToken();
- return new CallExprAST(IdName, Args);
+ return llvm::make_unique<CallExprAST>(IdName, std::move(Args));
}
/// numberexpr ::= number
-static ExprAST *ParseNumberExpr() {
- ExprAST *Result = new NumberExprAST(NumVal);
+static std::unique_ptr<ExprAST> ParseNumberExpr() {
+ auto Result = llvm::make_unique<NumberExprAST>(NumVal);
getNextToken(); // consume the number
- return Result;
+ return std::move(Result);
}
/// parenexpr ::= '(' expression ')'
-static ExprAST *ParseParenExpr() {
+static std::unique_ptr<ExprAST> ParseParenExpr() {
getNextToken(); // eat (.
- ExprAST *V = ParseExpression();
+ auto V = ParseExpression();
if (!V)
- return 0;
+ return nullptr;
if (CurTok != ')')
return Error("expected ')'");
/// ::= identifierexpr
/// ::= numberexpr
/// ::= parenexpr
-static ExprAST *ParsePrimary() {
+static std::unique_ptr<ExprAST> ParsePrimary() {
switch (CurTok) {
default:
return Error("unknown token when expecting an expression");
/// binoprhs
/// ::= ('+' primary)*
-static ExprAST *ParseBinOpRHS(int ExprPrec, ExprAST *LHS) {
+static std::unique_ptr<ExprAST> ParseBinOpRHS(int ExprPrec,
+ std::unique_ptr<ExprAST> LHS) {
// If this is a binop, find its precedence.
while (1) {
int TokPrec = GetTokPrecedence();
getNextToken(); // eat binop
// Parse the primary expression after the binary operator.
- ExprAST *RHS = ParsePrimary();
+ auto RHS = ParsePrimary();
if (!RHS)
- return 0;
+ return nullptr;
// If BinOp binds less tightly with RHS than the operator after RHS, let
// the pending operator take RHS as its LHS.
int NextPrec = GetTokPrecedence();
if (TokPrec < NextPrec) {
- RHS = ParseBinOpRHS(TokPrec + 1, RHS);
- if (RHS == 0)
- return 0;
+ RHS = ParseBinOpRHS(TokPrec + 1, std::move(RHS));
+ if (!RHS)
+ return nullptr;
}
// Merge LHS/RHS.
- LHS = new BinaryExprAST(BinOp, LHS, RHS);
+ LHS = llvm::make_unique<BinaryExprAST>(BinOp, std::move(LHS),
+ std::move(RHS));
}
}
/// expression
/// ::= primary binoprhs
///
-static ExprAST *ParseExpression() {
- ExprAST *LHS = ParsePrimary();
+static std::unique_ptr<ExprAST> ParseExpression() {
+ auto LHS = ParsePrimary();
if (!LHS)
- return 0;
+ return nullptr;
- return ParseBinOpRHS(0, LHS);
+ return ParseBinOpRHS(0, std::move(LHS));
}
/// prototype
/// ::= id '(' id* ')'
-static PrototypeAST *ParsePrototype() {
+static std::unique_ptr<PrototypeAST> ParsePrototype() {
if (CurTok != tok_identifier)
return ErrorP("Expected function name in prototype");
// success.
getNextToken(); // eat ')'.
- return new PrototypeAST(FnName, ArgNames);
+ return llvm::make_unique<PrototypeAST>(FnName, std::move(ArgNames));
}
/// definition ::= 'def' prototype expression
-static FunctionAST *ParseDefinition() {
+static std::unique_ptr<FunctionAST> ParseDefinition() {
getNextToken(); // eat def.
- PrototypeAST *Proto = ParsePrototype();
- if (Proto == 0)
- return 0;
+ auto Proto = ParsePrototype();
+ if (!Proto)
+ return nullptr;
- if (ExprAST *E = ParseExpression())
- return new FunctionAST(Proto, E);
- return 0;
+ if (auto E = ParseExpression())
+ return llvm::make_unique<FunctionAST>(std::move(Proto), std::move(E));
+ return nullptr;
}
/// toplevelexpr ::= expression
-static FunctionAST *ParseTopLevelExpr() {
- if (ExprAST *E = ParseExpression()) {
+static std::unique_ptr<FunctionAST> ParseTopLevelExpr() {
+ if (auto E = ParseExpression()) {
// Make an anonymous proto.
- PrototypeAST *Proto = new PrototypeAST("", std::vector<std::string>());
- return new FunctionAST(Proto, E);
+ auto Proto = llvm::make_unique<PrototypeAST>("",
+ std::vector<std::string>());
+ return llvm::make_unique<FunctionAST>(std::move(Proto), std::move(E));
}
- return 0;
+ return nullptr;
}
/// external ::= 'extern' prototype
-static PrototypeAST *ParseExtern() {
+static std::unique_ptr<PrototypeAST> ParseExtern() {
getNextToken(); // eat extern.
return ParsePrototype();
}
Function *PF = OpenModule->getFunction(FnName);
if (PF && !PF->empty()) {
ErrorF("redefinition of function across modules");
- return 0;
+ return nullptr;
}
// If we don't have a prototype yet, create one.
Value *ErrorV(const char *Str) {
Error(Str);
- return 0;
+ return nullptr;
}
Value *NumberExprAST::Codegen() {
Value *BinaryExprAST::Codegen() {
Value *L = LHS->Codegen();
Value *R = RHS->Codegen();
- if (L == 0 || R == 0)
- return 0;
+ if (!L || !R)
+ return nullptr;
switch (Op) {
case '+':
Value *CallExprAST::Codegen() {
// Look up the name in the global module table.
Function *CalleeF = JITHelper->getFunction(Callee);
- if (CalleeF == 0)
+ if (!CalleeF)
return ErrorV("Unknown function referenced");
// If argument mismatch error.
std::vector<Value *> ArgsV;
for (unsigned i = 0, e = Args.size(); i != e; ++i) {
ArgsV.push_back(Args[i]->Codegen());
- if (ArgsV.back() == 0)
- return 0;
+ if (!ArgsV.back())
+ return nullptr;
}
return Builder.CreateCall(CalleeF, ArgsV, "calltmp");
// If F already has a body, reject this.
if (!F->empty()) {
ErrorF("redefinition of function");
- return 0;
+ return nullptr;
}
// If F took a different number of args, reject.
if (F->arg_size() != Args.size()) {
ErrorF("redefinition of function with different # args");
- return 0;
+ return nullptr;
}
}
NamedValues.clear();
Function *TheFunction = Proto->Codegen();
- if (TheFunction == 0)
- return 0;
+ if (!TheFunction)
+ return nullptr;
// Create a new basic block to start insertion into.
BasicBlock *BB = BasicBlock::Create(getGlobalContext(), "entry", TheFunction);
// Error reading body, remove function.
TheFunction->eraseFromParent();
- return 0;
+ return nullptr;
}
//===----------------------------------------------------------------------===//
//===----------------------------------------------------------------------===//
static void HandleDefinition() {
- if (FunctionAST *F = ParseDefinition()) {
- if (Function *LF = F->Codegen()) {
+ if (auto FnAST = ParseDefinition()) {
+ if (auto *FnIR = FnAST->Codegen()) {
fprintf(stderr, "Read function definition:");
- LF->dump();
+ FnIR->dump();
}
} else {
// Skip token for error recovery.
}
static void HandleExtern() {
- if (PrototypeAST *P = ParseExtern()) {
- if (Function *F = P->Codegen()) {
+ if (auto ProtoAST = ParseExtern()) {
+ if (auto *FnIR = ProtoAST->Codegen()) {
fprintf(stderr, "Read extern: ");
- F->dump();
+ FnIR->dump();
}
} else {
// Skip token for error recovery.
static void HandleTopLevelExpression() {
// Evaluate a top-level expression into an anonymous function.
- if (FunctionAST *F = ParseTopLevelExpr()) {
- if (Function *LF = F->Codegen()) {
+ if (auto FnAST = ParseTopLevelExpr()) {
+ if (auto *FnIR = FnAST->Codegen()) {
// JIT the function, returning a function pointer.
- void *FPtr = JITHelper->getPointerToFunction(LF);
+ void *FPtr = JITHelper->getPointerToFunction(FnIR);
// Cast it to the right type (takes no arguments, returns a double) so we
// can call it as a native function.
projects / oota-llvm.git / blobdiff