Allow character to integer casts

.gitignore

@@ -2,3 +2,13 @@
 .idea
 .project
 *.iml
+
+tern-common/\.classpath
+
+tern-compile/\.classpath
+
+tern-core/\.classpath
+
+tern-parse/\.classpath
+
+tern-tree/\.classpath

tern-common/pom.xml

@@ -13,7 +13,7 @@
       <scope>test</scope>
     </dependency>
   </dependencies>
-  <build>
+  <build> 
     <plugins>
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>

tern-compile/src/test/java/org/ternlang/compile/CastTest.java

@@ -48,6 +48,14 @@ public class CastTest extends TestCase {
    "assert iterator.next() == `4`;\n"+
    "assert iterator.next() == 5;\n";
 
+   private static final String SOURCE_5 =
+   "let x = 'a'.charAt(0) as Integer;\n"+
+   "assert x == 97;\n"; 
+
+   private static final String SOURCE_6 =
+   "let x = 'a' as Character;\n"+
+   "assert x == 'a';\n";    
+
    public void testCharacterCast() throws Exception {;
       Compiler compiler = ClassPathCompilerBuilder.createCompiler();
       Executable executable = compiler.compile(SOURCE_1);
@@ -72,4 +80,18 @@ public void testYieldCast() throws Exception {
       Executable executable = compiler.compile(SOURCE_4);
       executable.execute();
    } 
+
+   public void testCharacterToInteger() throws Exception {
+      Compiler compiler = ClassPathCompilerBuilder.createCompiler();
+      System.err.println(SOURCE_5);
+      Executable executable = compiler.compile(SOURCE_5);
+      executable.execute();
+   } 
+
+   public void testStringToCharacter() throws Exception {
+      Compiler compiler = ClassPathCompilerBuilder.createCompiler();
+      System.err.println(SOURCE_6);
+      Executable executable = compiler.compile(SOURCE_6);
+      executable.execute();
+   } 
 }

tern-core/src/main/java/org/ternlang/core/convert/IntegerConverter.java

@@ -44,4 +44,19 @@ public class IntegerConverter extends NumberConverter {
    public IntegerConverter(Type type) {
       super(type, INTEGER_TYPES, INTEGER_SCORES);
    }
+
+   @Override
+   public Object convert(Object value) throws Exception {
+      if(value != null) {
+         Class actual = value.getClass();
+
+         if(actual == Character.class) {
+            Character code = (Character)value;
+            int number = code.charValue();
+
+            return number;
+         }
+      }
+      return super.convert(value);
+   }
 }