[ASTMatchers] Add support for floatLiterals

Summary:
Needed to support something like "floatLiteral(equals(1.0))". The
parser for floating point numbers is kept simple, so instead of ".1" you
have to use "0.1".

Reviewed By: aaron.ballman

Differential Revision: https://reviews.llvm.org/D33135

llvm-svn: 305021

1 files changed, 17 insertions, 2 deletions

diff --git a/clang/unittests/ASTMatchers/Dynamic/ParserTest.cpp b/clang/unittests/ASTMatchers/Dynamic/ParserTest.cpp
index 504724362a7..ed184a8c149 100644
--- a/clang/unittests/ASTMatchers/Dynamic/ParserTest.cpp
+++ b/clang/unittests/ASTMatchers/Dynamic/ParserTest.cpp
@@ -84,6 +84,21 @@ TEST(ParserTest, ParseBoolean) {
   EXPECT_EQ(false, Sema.Values[1].getBoolean());
 }
 
+TEST(ParserTest, ParseDouble) {
+  MockSema Sema;
+  Sema.parse("1.0");
+  Sema.parse("2.0f");
+  Sema.parse("34.56e-78");
+  Sema.parse("4.E+6");
+  Sema.parse("1");
+  EXPECT_EQ(5U, Sema.Values.size());
+  EXPECT_EQ(1.0, Sema.Values[0].getDouble());
+  EXPECT_EQ("1:1: Error parsing numeric literal: <2.0f>", Sema.Errors[1]);
+  EXPECT_EQ(34.56e-78, Sema.Values[2].getDouble());
+  EXPECT_EQ(4e+6, Sema.Values[3].getDouble());
+  EXPECT_FALSE(Sema.Values[4].isDouble());
+}
+
 TEST(ParserTest, ParseUnsigned) {
   MockSema Sema;
   Sema.parse("0");
@@ -95,8 +110,8 @@ TEST(ParserTest, ParseUnsigned) {
   EXPECT_EQ(0U, Sema.Values[0].getUnsigned());
   EXPECT_EQ(123U, Sema.Values[1].getUnsigned());
   EXPECT_EQ(31U, Sema.Values[2].getUnsigned());
-  EXPECT_EQ("1:1: Error parsing unsigned token: <12345678901>", Sema.Errors[3]);
-  EXPECT_EQ("1:1: Error parsing unsigned token: <1a1>", Sema.Errors[4]);
+  EXPECT_EQ("1:1: Error parsing numeric literal: <12345678901>", Sema.Errors[3]);
+  EXPECT_EQ("1:1: Error parsing numeric literal: <1a1>", Sema.Errors[4]);
 }
 
 TEST(ParserTest, ParseString) {