Support underscores in hex float literals.

2 files changed, 38 insertions, 1 deletions

diff --git a/javaparser-testing/src/test/java/com/github/javaparser/JavaParserTest.java b/javaparser-testing/src/test/java/com/github/javaparser/JavaParserTest.java
index c30427b27..cb755af16 100644
--- a/javaparser-testing/src/test/java/com/github/javaparser/JavaParserTest.java
+++ b/javaparser-testing/src/test/java/com/github/javaparser/JavaParserTest.java
@@ -207,6 +207,6 @@ public class JavaParserTest {
     @Test
     public void trailingWhitespaceIsIgnored() {
         BlockStmt blockStmt = JavaParser.parseBlock("{} // hello");
-        assertEquals("\"}\" <120> (line 1,col 2)-(line 1,col 2)", blockStmt.getTokenRange().get().getEnd().toString());
+        assertEquals("\"}\" <121> (line 1,col 2)-(line 1,col 2)", blockStmt.getTokenRange().get().getEnd().toString());
     }
 }
diff --git a/javaparser-testing/src/test/java/com/github/javaparser/ast/expr/DoubleLiteralExprTest.java b/javaparser-testing/src/test/java/com/github/javaparser/ast/expr/DoubleLiteralExprTest.java
new file mode 100644
index 000000000..9c5464394
--- /dev/null
+++ b/javaparser-testing/src/test/java/com/github/javaparser/ast/expr/DoubleLiteralExprTest.java
@@ -0,0 +1,37 @@
+package com.github.javaparser.ast.expr;
+
+import org.junit.Test;
+
+import static com.github.javaparser.JavaParser.parseExpression;
+
+public class DoubleLiteralExprTest {
+    @Test
+    public void test1() {
+        float x = 0x0.00_00_02p-126f;
+        parseExpression("0x0.00_00_02p-126f");
+    }
+
+    @Test
+    public void test2() {
+        double x = 0x0.000_000_000_000_1p-1_022;
+        parseExpression("0x0.000_000_000_000_1p-1_022");
+    }
+
+    @Test
+    public void test3() {
+        double a = 0x1.p+1;
+        parseExpression("0x1.p+1");
+    }
+
+    @Test
+    public void test4() {
+        double a = 0x.0p0;
+        parseExpression("0x.0p0");
+    }
+
+    @Test
+    public void test5() {
+        double x = 0x0_0.0_0p-1_0;
+        parseExpression("0x0_0.0_0p-1_0");
+    }
+}