[groovy] branch master updated: GROOVY-8678: allow floating point literals without leading zeroes

[paulk]

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paulk pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/groovy.git


The following commit(s) were added to refs/heads/master by this push:
     new 80895bc  GROOVY-8678: allow floating point literals without leading 
zeroes
     new 8ad3f0e  Merge pull request #1588 from nineninesevenfour/GROOVY-8678
80895bc is described below

commit 80895bc72a3706454de294be75ee8b183b2b65f8
Author: Harald Fassler <harald.fassler+9...@gmail.com>
AuthorDate: Sat Jun 5 11:13:37 2021 +0200

    GROOVY-8678: allow floating point literals without leading zeroes
    
    fixes https://issues.apache.org/jira/browse/GROOVY-8678
    
    Signed-off-by: Harald Fassler <harald.fassler+9...@gmail.com>
---
 src/antlr/GroovyLexer.g4               |  2 +-
 src/spec/test/SyntaxTest.groovy        |  1 +
 src/test/groovy/bugs/Groovy8678.groovy | 38 ++++++++++++++++++++++++++++++++++
 3 files changed, 40 insertions(+), 1 deletion(-)

diff --git a/src/antlr/GroovyLexer.g4 b/src/antlr/GroovyLexer.g4
index 6eda984..e74acac 100644
--- a/src/antlr/GroovyLexer.g4
+++ b/src/antlr/GroovyLexer.g4
@@ -633,7 +633,7 @@ FloatingPointLiteral
 
 fragment
 DecimalFloatingPointLiteral
-    :   Digits Dot Digits ExponentPart? FloatTypeSuffix?
+    :   Digits? Dot Digits ExponentPart? FloatTypeSuffix?
     |   Digits ExponentPart FloatTypeSuffix?
     |   Digits FloatTypeSuffix
     ;
diff --git a/src/spec/test/SyntaxTest.groovy b/src/spec/test/SyntaxTest.groovy
index 694d74c..be9b661 100644
--- a/src/spec/test/SyntaxTest.groovy
+++ b/src/spec/test/SyntaxTest.groovy
@@ -111,6 +111,7 @@ class SyntaxTest extends CompilableTestSupport {
         assert 456G == new BigInteger('456')
         assert 456g == new BigInteger('456')
         assert 123.45 == new BigDecimal('123.45') // default BigDecimal type 
used
+        assert .321 == new BigDecimal('.321')
         assert 1.200065D == new Double('1.200065')
         assert 1.234F == new Float('1.234')
         assert 1.23E23D == new Double('1.23E23')
diff --git a/src/test/groovy/bugs/Groovy8678.groovy 
b/src/test/groovy/bugs/Groovy8678.groovy
new file mode 100644
index 0000000..71975f1
--- /dev/null
+++ b/src/test/groovy/bugs/Groovy8678.groovy
@@ -0,0 +1,38 @@
+/*
+ *  Licensed to the Apache Software Foundation (ASF) under one
+ *  or more contributor license agreements.  See the NOTICE file
+ *  distributed with this work for additional information
+ *  regarding copyright ownership.  The ASF licenses this file
+ *  to you under the Apache License, Version 2.0 (the
+ *  "License"); you may not use this file except in compliance
+ *  with the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing,
+ *  software distributed under the License is distributed on an
+ *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ *  KIND, either express or implied.  See the License for the
+ *  specific language governing permissions and limitations
+ *  under the License.
+ */
+package groovy.bugs
+
+import groovy.transform.CompileStatic
+import org.junit.Test
+
+import static groovy.test.GroovyAssert.assertScript
+
+@CompileStatic
+final class Groovy8678 {
+
+    @Test
+    void testFloatingPointLiteralWithoutLeadingZero() {
+        assertScript '''
+            def aFloat = .42
+            assert (aFloat as String) == '0.42'
+            assert aFloat / .21 == 2
+            assert aFloat / 2 == .21
+        '''
+    }
+}