1 files changed, 0 insertions, 447 deletions
diff --git a/gnu/llvm/examples/Kaleidoscope/Chapter2/toy.cpp b/gnu/llvm/examples/Kaleidoscope/Chapter2/toy.cpp
deleted file mode 100644
index 4dc917e3f06..00000000000
--- a/gnu/llvm/examples/Kaleidoscope/Chapter2/toy.cpp
+++ /dev/null
@@ -1,447 +0,0 @@
-#include "llvm/ADT/STLExtras.h"
-#include <algorithm>
-#include <cctype>
-#include <cstdio>
-#include <cstdlib>
-#include <map>
-#include <memory>
-#include <string>
-#include <vector>
-
-//===----------------------------------------------------------------------===//
-// Lexer
-//===----------------------------------------------------------------------===//
-
-// The lexer returns tokens [0-255] if it is an unknown character, otherwise one
-// of these for known things.
-enum Token {
-  tok_eof = -1,
-
-  // commands
-  tok_def = -2,
-  tok_extern = -3,
-
-  // primary
-  tok_identifier = -4,
-  tok_number = -5
-};
-
-static std::string IdentifierStr; // Filled in if tok_identifier
-static double NumVal;             // Filled in if tok_number
-
-/// gettok - Return the next token from standard input.
-static int gettok() {
-  static int LastChar = ' ';
-
-  // Skip any whitespace.
-  while (isspace(LastChar))
-    LastChar = getchar();
-
-  if (isalpha(LastChar)) { // identifier: [a-zA-Z][a-zA-Z0-9]*
-    IdentifierStr = LastChar;
-    while (isalnum((LastChar = getchar())))
-      IdentifierStr += LastChar;
-
-    if (IdentifierStr == "def")
-      return tok_def;
-    if (IdentifierStr == "extern")
-      return tok_extern;
-    return tok_identifier;
-  }
-
-  if (isdigit(LastChar) || LastChar == '.') { // Number: [0-9.]+
-    std::string NumStr;
-    do {
-      NumStr += LastChar;
-      LastChar = getchar();
-    } while (isdigit(LastChar) || LastChar == '.');
-
-    NumVal = strtod(NumStr.c_str(), nullptr);
-    return tok_number;
-  }
-
-  if (LastChar == '#') {
-    // Comment until end of line.
-    do
-      LastChar = getchar();
-    while (LastChar != EOF && LastChar != '\n' && LastChar != '\r');
-
-    if (LastChar != EOF)
-      return gettok();
-  }
-
-  // Check for end of file.  Don't eat the EOF.
-  if (LastChar == EOF)
-    return tok_eof;
-
-  // Otherwise, just return the character as its ascii value.
-  int ThisChar = LastChar;
-  LastChar = getchar();
-  return ThisChar;
-}
-
-//===----------------------------------------------------------------------===//
-// Abstract Syntax Tree (aka Parse Tree)
-//===----------------------------------------------------------------------===//
-
-namespace {
-
-/// ExprAST - Base class for all expression nodes.
-class ExprAST {
-public:
-  virtual ~ExprAST() = default;
-};
-
-/// NumberExprAST - Expression class for numeric literals like "1.0".
-class NumberExprAST : public ExprAST {
-  double Val;
-
-public:
-  NumberExprAST(double Val) : Val(Val) {}
-};
-
-/// VariableExprAST - Expression class for referencing a variable, like "a".
-class VariableExprAST : public ExprAST {
-  std::string Name;
-
-public:
-  VariableExprAST(const std::string &Name) : Name(Name) {}
-};
-
-/// BinaryExprAST - Expression class for a binary operator.
-class BinaryExprAST : public ExprAST {
-  char Op;
-  std::unique_ptr<ExprAST> LHS, RHS;
-
-public:
-  BinaryExprAST(char Op, std::unique_ptr<ExprAST> LHS,
-                std::unique_ptr<ExprAST> RHS)
-      : Op(Op), LHS(std::move(LHS)), RHS(std::move(RHS)) {}
-};
-
-/// CallExprAST - Expression class for function calls.
-class CallExprAST : public ExprAST {
-  std::string Callee;
-  std::vector<std::unique_ptr<ExprAST>> Args;
-
-public:
-  CallExprAST(const std::string &Callee,
-              std::vector<std::unique_ptr<ExprAST>> Args)
-      : Callee(Callee), Args(std::move(Args)) {}
-};
-
-/// PrototypeAST - This class represents the "prototype" for a function,
-/// which captures its name, and its argument names (thus implicitly the number
-/// of arguments the function takes).
-class PrototypeAST {
-  std::string Name;
-  std::vector<std::string> Args;
-
-public:
-  PrototypeAST(const std::string &Name, std::vector<std::string> Args)
-      : Name(Name), Args(std::move(Args)) {}
-
-  const std::string &getName() const { return Name; }
-};
-
-/// FunctionAST - This class represents a function definition itself.
-class FunctionAST {
-  std::unique_ptr<PrototypeAST> Proto;
-  std::unique_ptr<ExprAST> Body;
-
-public:
-  FunctionAST(std::unique_ptr<PrototypeAST> Proto,
-              std::unique_ptr<ExprAST> Body)
-      : Proto(std::move(Proto)), Body(std::move(Body)) {}
-};
-
-} // end anonymous namespace
-
-//===----------------------------------------------------------------------===//
-// Parser
-//===----------------------------------------------------------------------===//
-
-/// CurTok/getNextToken - Provide a simple token buffer.  CurTok is the current
-/// token the parser is looking at.  getNextToken reads another token from the
-/// lexer and updates CurTok with its results.
-static int CurTok;
-static int getNextToken() { return CurTok = gettok(); }
-
-/// BinopPrecedence - This holds the precedence for each binary operator that is
-/// defined.
-static std::map<char, int> BinopPrecedence;
-
-/// GetTokPrecedence - Get the precedence of the pending binary operator token.
-static int GetTokPrecedence() {
-  if (!isascii(CurTok))
-    return -1;
-
-  // Make sure it's a declared binop.
-  int TokPrec = BinopPrecedence[CurTok];
-  if (TokPrec <= 0)
-    return -1;
-  return TokPrec;
-}
-
-/// LogError* - These are little helper functions for error handling.
-std::unique_ptr<ExprAST> LogError(const char *Str) {
-  fprintf(stderr, "Error: %s\n", Str);
-  return nullptr;
-}
-std::unique_ptr<PrototypeAST> LogErrorP(const char *Str) {
-  LogError(Str);
-  return nullptr;
-}
-
-static std::unique_ptr<ExprAST> ParseExpression();
-
-/// numberexpr ::= number
-static std::unique_ptr<ExprAST> ParseNumberExpr() {
-  auto Result = llvm::make_unique<NumberExprAST>(NumVal);
-  getNextToken(); // consume the number
-  return std::move(Result);
-}
-
-/// parenexpr ::= '(' expression ')'
-static std::unique_ptr<ExprAST> ParseParenExpr() {
-  getNextToken(); // eat (.
-  auto V = ParseExpression();
-  if (!V)
-    return nullptr;
-
-  if (CurTok != ')')
-    return LogError("expected ')'");
-  getNextToken(); // eat ).
-  return V;
-}
-
-/// identifierexpr
-///   ::= identifier
-///   ::= identifier '(' expression* ')'
-static std::unique_ptr<ExprAST> ParseIdentifierExpr() {
-  std::string IdName = IdentifierStr;
-
-  getNextToken(); // eat identifier.
-
-  if (CurTok != '(') // Simple variable ref.
-    return llvm::make_unique<VariableExprAST>(IdName);
-
-  // Call.
-  getNextToken(); // eat (
-  std::vector<std::unique_ptr<ExprAST>> Args;
-  if (CurTok != ')') {
-    while (true) {
-      if (auto Arg = ParseExpression())
-        Args.push_back(std::move(Arg));
-      else
-        return nullptr;
-
-      if (CurTok == ')')
-        break;
-
-      if (CurTok != ',')
-        return LogError("Expected ')' or ',' in argument list");
-      getNextToken();
-    }
-  }
-
-  // Eat the ')'.
-  getNextToken();
-
-  return llvm::make_unique<CallExprAST>(IdName, std::move(Args));
-}
-
-/// primary
-///   ::= identifierexpr
-///   ::= numberexpr
-///   ::= parenexpr
-static std::unique_ptr<ExprAST> ParsePrimary() {
-  switch (CurTok) {
-  default:
-    return LogError("unknown token when expecting an expression");
-  case tok_identifier:
-    return ParseIdentifierExpr();
-  case tok_number:
-    return ParseNumberExpr();
-  case '(':
-    return ParseParenExpr();
-  }
-}
-
-/// binoprhs
-///   ::= ('+' primary)*
-static std::unique_ptr<ExprAST> ParseBinOpRHS(int ExprPrec,
-                                              std::unique_ptr<ExprAST> LHS) {
-  // If this is a binop, find its precedence.
-  while (true) {
-    int TokPrec = GetTokPrecedence();
-
-    // If this is a binop that binds at least as tightly as the current binop,
-    // consume it, otherwise we are done.
-    if (TokPrec < ExprPrec)
-      return LHS;
-
-    // Okay, we know this is a binop.
-    int BinOp = CurTok;
-    getNextToken(); // eat binop
-
-    // Parse the primary expression after the binary operator.
-    auto RHS = ParsePrimary();
-    if (!RHS)
-      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, std::move(RHS));
-      if (!RHS)
-        return nullptr;
-    }
-
-    // Merge LHS/RHS.
-    LHS = llvm::make_unique<BinaryExprAST>(BinOp, std::move(LHS),
-                                           std::move(RHS));
-  }
-}
-
-/// expression
-///   ::= primary binoprhs
-///
-static std::unique_ptr<ExprAST> ParseExpression() {
-  auto LHS = ParsePrimary();
-  if (!LHS)
-    return nullptr;
-
-  return ParseBinOpRHS(0, std::move(LHS));
-}
-
-/// prototype
-///   ::= id '(' id* ')'
-static std::unique_ptr<PrototypeAST> ParsePrototype() {
-  if (CurTok != tok_identifier)
-    return LogErrorP("Expected function name in prototype");
-
-  std::string FnName = IdentifierStr;
-  getNextToken();
-
-  if (CurTok != '(')
-    return LogErrorP("Expected '(' in prototype");
-
-  std::vector<std::string> ArgNames;
-  while (getNextToken() == tok_identifier)
-    ArgNames.push_back(IdentifierStr);
-  if (CurTok != ')')
-    return LogErrorP("Expected ')' in prototype");
-
-  // success.
-  getNextToken(); // eat ')'.
-
-  return llvm::make_unique<PrototypeAST>(FnName, std::move(ArgNames));
-}
-
-/// definition ::= 'def' prototype expression
-static std::unique_ptr<FunctionAST> ParseDefinition() {
-  getNextToken(); // eat def.
-  auto Proto = ParsePrototype();
-  if (!Proto)
-    return nullptr;
-
-  if (auto E = ParseExpression())
-    return llvm::make_unique<FunctionAST>(std::move(Proto), std::move(E));
-  return nullptr;
-}
-
-/// toplevelexpr ::= expression
-static std::unique_ptr<FunctionAST> ParseTopLevelExpr() {
-  if (auto E = ParseExpression()) {
-    // Make an anonymous proto.
-    auto Proto = llvm::make_unique<PrototypeAST>("__anon_expr",
-                                                 std::vector<std::string>());
-    return llvm::make_unique<FunctionAST>(std::move(Proto), std::move(E));
-  }
-  return nullptr;
-}
-
-/// external ::= 'extern' prototype
-static std::unique_ptr<PrototypeAST> ParseExtern() {
-  getNextToken(); // eat extern.
-  return ParsePrototype();
-}
-
-//===----------------------------------------------------------------------===//
-// Top-Level parsing
-//===----------------------------------------------------------------------===//
-
-static void HandleDefinition() {
-  if (ParseDefinition()) {
-    fprintf(stderr, "Parsed a function definition.\n");
-  } else {
-    // Skip token for error recovery.
-    getNextToken();
-  }
-}
-
-static void HandleExtern() {
-  if (ParseExtern()) {
-    fprintf(stderr, "Parsed an extern\n");
-  } else {
-    // Skip token for error recovery.
-    getNextToken();
-  }
-}
-
-static void HandleTopLevelExpression() {
-  // Evaluate a top-level expression into an anonymous function.
-  if (ParseTopLevelExpr()) {
-    fprintf(stderr, "Parsed a top-level expr\n");
-  } else {
-    // Skip token for error recovery.
-    getNextToken();
-  }
-}
-
-/// top ::= definition | external | expression | ';'
-static void MainLoop() {
-  while (true) {
-    fprintf(stderr, "ready> ");
-    switch (CurTok) {
-    case tok_eof:
-      return;
-    case ';': // ignore top-level semicolons.
-      getNextToken();
-      break;
-    case tok_def:
-      HandleDefinition();
-      break;
-    case tok_extern:
-      HandleExtern();
-      break;
-    default:
-      HandleTopLevelExpression();
-      break;
-    }
-  }
-}
-
-//===----------------------------------------------------------------------===//
-// Main driver code.
-//===----------------------------------------------------------------------===//
-
-int main() {
-  // Install standard binary operators.
-  // 1 is lowest precedence.
-  BinopPrecedence['<'] = 10;
-  BinopPrecedence['+'] = 20;
-  BinopPrecedence['-'] = 20;
-  BinopPrecedence['*'] = 40; // highest.
-
-  // Prime the first token.
-  fprintf(stderr, "ready> ");
-  getNextToken();
-
-  // Run the main "interpreter loop" now.
-  MainLoop();
-
-  return 0;
-}