Improved float handling

src/main/java/com/moandjiezana/toml/ValueAnalysis.java

@@ -15,7 +15,7 @@ class ValueAnalysis {
   private static final List<Object> INVALID_ARRAY = new ArrayList<Object>();
 
   private static final Pattern BOOLEAN_REGEX = Pattern.compile("(true|false)(.*)");
-  private static final Pattern FLOAT_REGEX = Pattern.compile("(-?[0-9\\.]*)(.*)");
+  private static final Pattern FLOAT_REGEX = Pattern.compile("(-?\\d+\\.\\d+)(.*)");
   private static final Pattern INTEGER_REGEX = Pattern.compile("(-?[0-9]*)(.*)");
   private static final Pattern DATE_REGEX = Pattern.compile("(\\d{4}-[0-1][0-9]-[0-3][0-9]T[0-2][0-9]:[0-5][0-9]:[0-5][0-9]Z)(.*)");
   private static final Pattern UNICODE_REGEX = Pattern.compile("\\\\u(.*)");

src/test/java/com/moandjiezana/toml/BurntSushiTest.java

@@ -149,6 +149,16 @@ public class BurntSushiTest {
   public void datetime_malformed_no_leads() throws Exception {
     runInvalidTest("datetime-malformed-no-leads");
   }
+  
+  @Test
+  public void float_no_leading_zero() throws Exception {
+    runInvalidTest("float-no-leading-zero");
+  }
+  
+  @Test
+  public void float_no_trailing_digits() throws Exception {
+    runInvalidTest("float-no-trailing-digits");
+  }
 
   @After
   public void after() throws IOException {

src/test/java/com/moandjiezana/toml/TomlTest.java

@@ -347,12 +347,32 @@ public class TomlTest {
   public void should_fail_when_illegal_characters_after_table() throws Exception {
     new Toml().parse("[error]   if you didn't catch this, your parser is broken");
   }
-
+  
   @Test(expected = IllegalStateException.class)
   public void should_fail_when_illegal_characters_after_key() throws Exception {
     new Toml().parse("number = 3.14  pi");
   }
 
+  @Test(expected = IllegalStateException.class)
+  public void should_fail_on_float_without_leading_0() {
+    new Toml().parse("answer = .12345");
+  }
+
+  @Test(expected = IllegalStateException.class)
+  public void should_fail_on_negative_float_without_leading_0() {
+    new Toml().parse("answer = -.12345");
+  }
+  
+  @Test(expected = IllegalStateException.class)
+  public void should_fail_on_float_without_digits_after_dot() {
+    new Toml().parse("answer = 1.");
+  }
+
+  @Test(expected = IllegalStateException.class)
+  public void should_fail_on_negative_float_without_digits_after_dot() {
+    new Toml().parse("answer = -1.");
+  }
+
   private File file(String file) {
     return new File(getClass().getResource(file + ".toml").getFile());
   }

src/test/resources/com/moandjiezana/toml/burntsushi/invalid/float-no-leading-zero.toml

@@ -0,0 +1,2 @@
+answer = .12345
+neganswer = -.12345

src/test/resources/com/moandjiezana/toml/burntsushi/invalid/float-no-trailing-digits.toml

@@ -0,0 +1,2 @@
+answer = 1.
+neganswer = -1.