Implement 'as_bool' builtin

5 files changed, 100 insertions, 51 deletions

diff --git a/src/main/com/jantuomi/tunkki/core/runtime/builtins/globals/AsIntBuiltinFunction.java b/src/main/com/jantuomi/tunkki/core/runtime/builtins/globals/AsIntBuiltinFunction.java
deleted file mode 100644
index adb5209..0000000
--- a/src/main/com/jantuomi/tunkki/core/runtime/builtins/globals/AsIntBuiltinFunction.java
+++ /dev/null
@@ -1,50 +0,0 @@
-package com.jantuomi.tunkki.core.runtime.builtins.globals;
-
-import com.jantuomi.tunkki.core.parser.datatype.BooleanDatatype;
-import com.jantuomi.tunkki.core.parser.datatype.Datatype;
-import com.jantuomi.tunkki.core.parser.datatype.IntegerDatatype;
-import com.jantuomi.tunkki.core.parser.datatype.StringDatatype;
-import com.jantuomi.tunkki.exception.TunkkiError;
-
-import java.util.Arrays;
-import java.util.List;
-
-/**
- * Created by jan on 21.6.2016.
- */
-public class AsIntBuiltinFunction extends BuiltinFunction {
-    public AsIntBuiltinFunction() {
-        super(
-                Arrays.asList("expression")
-        );
-    }
-
-    @Override
-    public String getName() {
-        return "as_int";
-    }
-
-    @Override
-    public Datatype evaluate(List<Datatype> params) throws TunkkiError {
-        if (params.size() != 1) {
-            return null;
-        }
-        Datatype param = params.get(0);
-        int i = 0;
-        if (param instanceof StringDatatype) {
-            try {
-                i = Integer.parseInt(((StringDatatype) param).getData());
-            }
-            catch (NumberFormatException ex) {
-                return null;
-            }
-        }
-        else if (param instanceof IntegerDatatype) {
-            i = ((IntegerDatatype) param).getData();
-        }
-        else if (param instanceof BooleanDatatype) {
-            i = ((BooleanDatatype) param).getData() ? 1 : 0;
-        }
-        return new IntegerDatatype(i);
-    }
-}
diff --git a/src/main/com/jantuomi/tunkki/core/runtime/builtins/globals/BuiltinManager.java b/src/main/com/jantuomi/tunkki/core/runtime/builtins/globals/BuiltinManager.java
index 5d6e5c2..76b4916 100644
--- a/src/main/com/jantuomi/tunkki/core/runtime/builtins/globals/BuiltinManager.java
+++ b/src/main/com/jantuomi/tunkki/core/runtime/builtins/globals/BuiltinManager.java
@@ -1,5 +1,8 @@
 package com.jantuomi.tunkki.core.runtime.builtins.globals;
 
+import com.jantuomi.tunkki.core.runtime.builtins.globals.cast.AsBooleanBuiltinFunction;
+import com.jantuomi.tunkki.core.runtime.builtins.globals.cast.AsIntBuiltinFunction;
+
 import java.util.ArrayList;
 import java.util.List;
 
@@ -22,6 +25,7 @@ public class BuiltinManager {
         new InputBuiltinFunction();
         new ConcatBuiltinFunction();
         new AsIntBuiltinFunction();
+        new AsBooleanBuiltinFunction();
         new IncludeBuiltinFunction();
         new ListBuiltinFunction();
         new ContainsBuiltinFunction();
diff --git a/src/main/com/jantuomi/tunkki/core/runtime/builtins/globals/cast/AsBooleanBuiltinFunction.java b/src/main/com/jantuomi/tunkki/core/runtime/builtins/globals/cast/AsBooleanBuiltinFunction.java
new file mode 100644
index 0000000..ed47b6e
--- /dev/null
+++ b/src/main/com/jantuomi/tunkki/core/runtime/builtins/globals/cast/AsBooleanBuiltinFunction.java
@@ -0,0 +1,42 @@
+package com.jantuomi.tunkki.core.runtime.builtins.globals.cast;
+
+import com.jantuomi.tunkki.core.parser.datatype.*;
+import com.jantuomi.tunkki.core.runtime.builtins.globals.BuiltinFunction;
+import com.jantuomi.tunkki.exception.TunkkiError;
+
+import java.util.Arrays;
+import java.util.List;
+
+/**
+ * Created by jan on 21.6.2016.
+ */
+public class AsBooleanBuiltinFunction extends BuiltinFunction {
+    public AsBooleanBuiltinFunction() {
+        super(
+                Arrays.asList("expression")
+        );
+    }
+
+    @Override
+    public String getName() {
+        return "as_bool";
+    }
+
+    @Override
+    public BooleanDatatype evaluate(List<Datatype> params) throws TunkkiError {
+        if (params.size() != 1) {
+            return null;
+        }
+        Datatype param = params.get(0);
+        boolean b;
+        switch (param.getType()) {
+            case Integer:
+                return new BooleanDatatype(((IntegerDatatype) param).getData() != 0);
+            case Boolean:
+                return new BooleanDatatype(((BooleanDatatype) param).getData());
+            default:
+                throw new TunkkiError(TunkkiError.ExceptionType.CastError, -1, "Boolean", param.toString());
+        }
+
+    }
+}
diff --git a/src/main/com/jantuomi/tunkki/core/runtime/builtins/globals/cast/AsIntBuiltinFunction.java b/src/main/com/jantuomi/tunkki/core/runtime/builtins/globals/cast/AsIntBuiltinFunction.java
new file mode 100644
index 0000000..55e542d
--- /dev/null
+++ b/src/main/com/jantuomi/tunkki/core/runtime/builtins/globals/cast/AsIntBuiltinFunction.java
@@ -0,0 +1,52 @@
+package com.jantuomi.tunkki.core.runtime.builtins.globals.cast;
+
+import com.jantuomi.tunkki.core.parser.datatype.*;
+import com.jantuomi.tunkki.core.runtime.builtins.globals.BuiltinFunction;
+import com.jantuomi.tunkki.exception.TunkkiError;
+
+import java.util.Arrays;
+import java.util.List;
+
+/**
+ * Created by jan on 21.6.2016.
+ */
+public class AsIntBuiltinFunction extends BuiltinFunction {
+    public AsIntBuiltinFunction() {
+        super(
+                Arrays.asList("expression")
+        );
+    }
+
+    @Override
+    public String getName() {
+        return "as_int";
+    }
+
+    @Override
+    public IntegerDatatype evaluate(List<Datatype> params) throws TunkkiError {
+        if (params.size() != 1) {
+            return null;
+        }
+        Datatype param = params.get(0);
+        int i;
+        switch (param.getType()) {
+            case String:
+                try {
+                    i = Integer.parseInt(((StringDatatype) param).getData());
+                }
+                catch (NumberFormatException ex) {
+                    throw new TunkkiError(TunkkiError.ExceptionType.CastError, -1, "Integer", ((StringDatatype) param).getData());
+                }
+                return new IntegerDatatype(i);
+            case Integer:
+                return new IntegerDatatype(((IntegerDatatype) param).getData());
+            case Boolean:
+                return new IntegerDatatype(((BooleanDatatype) param).getData() ? 1 : 0);
+            case Double:
+                return new IntegerDatatype((int) Math.round(((DoubleDatatype) param).getData()));
+            default:
+                throw new TunkkiError(TunkkiError.ExceptionType.CastError, -1, "Integer", param.toString());
+        }
+
+    }
+}
diff --git a/src/main/com/jantuomi/tunkki/exception/TunkkiError.java b/src/main/com/jantuomi/tunkki/exception/TunkkiError.java
index dd48077..2f133e6 100644
--- a/src/main/com/jantuomi/tunkki/exception/TunkkiError.java
+++ b/src/main/com/jantuomi/tunkki/exception/TunkkiError.java
@@ -20,7 +20,7 @@ public class TunkkiError extends Exception {
         UndeclaredSymbolError,
         IncludeError,
         GeneralError,
-        NadaError
+        CastError, NadaError
     }
 
     private static Map<ExceptionType, String> errorTexts = new HashMap<>();
@@ -35,6 +35,7 @@ public class TunkkiError extends Exception {
         errorTexts.put(ExceptionType.IncludeError, "File %s could not be included.");
         errorTexts.put(ExceptionType.GeneralError, "%s");
         errorTexts.put(ExceptionType.NadaError, "Can't do operation with a nada value.");
+        errorTexts.put(ExceptionType.CastError, "Illegal cast to type %s from value %s.");
     }
 
     private ExceptionType exceptionType;