From 59b0da886efd85ed8b93c74d3e32da7e7252e4a0 Mon Sep 17 00:00:00 2001
From: Lang Hames <lhames@gmail.com>
Date: Wed, 19 Aug 2015 18:15:58 +0000
Subject: [Kaleidoscope] Clang-format the Kaleidoscope tutorials.

Also reduces changes between tutorial chapters.

llvm-svn: 245472
---
 llvm/examples/Kaleidoscope/Chapter4/toy.cpp | 70 +++++++++++++++++------------
 1 file changed, 41 insertions(+), 29 deletions(-)

(limited to 'llvm/examples/Kaleidoscope/Chapter4/toy.cpp')

diff --git a/llvm/examples/Kaleidoscope/Chapter4/toy.cpp b/llvm/examples/Kaleidoscope/Chapter4/toy.cpp
index f0665f29831..eba0ab1f27d 100644
--- a/llvm/examples/Kaleidoscope/Chapter4/toy.cpp
+++ b/llvm/examples/Kaleidoscope/Chapter4/toy.cpp
@@ -106,6 +106,7 @@ public:
 /// NumberExprAST - Expression class for numeric literals like "1.0".
 class NumberExprAST : public ExprAST {
   double Val;
+
 public:
   NumberExprAST(double Val) : Val(Val) {}
   Value *Codegen() override;
@@ -114,6 +115,7 @@ public:
 /// VariableExprAST - Expression class for referencing a variable, like "a".
 class VariableExprAST : public ExprAST {
   std::string Name;
+
 public:
   VariableExprAST(const std::string &Name) : Name(Name) {}
   Value *Codegen() override;
@@ -123,6 +125,7 @@ public:
 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)
@@ -134,6 +137,7 @@ public:
 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)
@@ -147,9 +151,10 @@ public:
 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)) {}
+  PrototypeAST(const std::string &Name, std::vector<std::string> Args)
+      : Name(Name), Args(std::move(Args)) {}
   Function *Codegen();
 };
 
@@ -157,10 +162,11 @@ public:
 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)) {}
+      : Proto(std::move(Proto)), Body(std::move(Body)) {}
   Function *Codegen();
 };
 } // end anonymous namespace
@@ -207,6 +213,26 @@ std::unique_ptr<FunctionAST> ErrorF(const char *Str) {
 
 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 Error("expected ')'");
+  getNextToken(); // eat ).
+  return V;
+}
+
 /// identifierexpr
 ///   ::= identifier
 ///   ::= identifier '(' expression* ')'
@@ -243,26 +269,6 @@ static std::unique_ptr<ExprAST> ParseIdentifierExpr() {
   return llvm::make_unique<CallExprAST>(IdName, std::move(Args));
 }
 
-/// 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 Error("expected ')'");
-  getNextToken(); // eat ).
-  return V;
-}
-
 /// primary
 ///   ::= identifierexpr
 ///   ::= numberexpr
@@ -312,8 +318,8 @@ static std::unique_ptr<ExprAST> ParseBinOpRHS(int ExprPrec,
     }
 
     // Merge LHS/RHS.
-    LHS = llvm::make_unique<BinaryExprAST>(BinOp, std::move(LHS),
-                                           std::move(RHS));
+    LHS =
+        llvm::make_unique<BinaryExprAST>(BinOp, std::move(LHS), std::move(RHS));
   }
 }
 
@@ -368,8 +374,8 @@ static std::unique_ptr<FunctionAST> ParseDefinition() {
 static std::unique_ptr<FunctionAST> ParseTopLevelExpr() {
   if (auto E = ParseExpression()) {
     // Make an anonymous proto.
-    auto Proto = llvm::make_unique<PrototypeAST>("",
-                                                 std::vector<std::string>());
+    auto Proto =
+        llvm::make_unique<PrototypeAST>("", std::vector<std::string>());
     return llvm::make_unique<FunctionAST>(std::move(Proto), std::move(E));
   }
   return nullptr;
@@ -806,9 +812,9 @@ static void MainLoop() {
     switch (CurTok) {
     case tok_eof:
       return;
-    case ';':
+    case ';': // ignore top-level semicolons.
       getNextToken();
-      break; // ignore top-level semicolons.
+      break;
     case tok_def:
       HandleDefinition();
       break;
@@ -832,6 +838,12 @@ extern "C" double putchard(double X) {
   return 0;
 }
 
+/// printd - printf that takes a double prints it as "%f\n", returning 0.
+extern "C" double printd(double X) {
+  printf("%f\n", X);
+  return 0;
+}
+
 //===----------------------------------------------------------------------===//
 // Main driver code.
 //===----------------------------------------------------------------------===//
-- 
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