Very basic java interop has been added
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3f3f109c12
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@ -9,6 +9,9 @@ import serene.simple.builtin.AFn;
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import static java.util.Arrays.asList;
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import java.lang.reflect.InvocationTargetException;
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import java.lang.reflect.Method;
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public class ListNode<T extends Node> extends Node implements Iterable<T> {
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public static final ListNode<?> EMPTY = new ListNode<>();
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@ -47,13 +50,18 @@ public class ListNode<T extends Node> extends Node implements Iterable<T> {
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@Override
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public Object eval(BaseScope scope) {
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Object f = this.first().eval(scope);
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SymbolNode firstElement = (SymbolNode) this.first();
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List<Object> args = new ArrayList<Object>();
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for (T node : this.rest()) {
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args.add(node.eval(scope));
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}
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if (firstElement.name.startsWith(".")) {
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return this.evalInterop(scope, firstElement, args.subList(1, args.size()));
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}
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Object f = firstElement.eval(scope);
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if (f instanceof AFn) {
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return evalBuiltin(scope, (AFn) f, args);
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}
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@ -71,6 +79,59 @@ public class ListNode<T extends Node> extends Node implements Iterable<T> {
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return fn.apply(args.toArray());
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}
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public Object evalInterop(BaseScope scope, SymbolNode firstElement, List<Object> rest)
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throws SereneException {
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String mName = firstElement.name.substring(1, firstElement.name.length());
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Object target = this.rest().first().eval(scope);
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if (mName.startsWith("-")) {
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return this.evalInteropProperty(
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scope,
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target,
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mName.substring(1, firstElement.name.length()));
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}
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try {
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System.out.println(target.getClass().getName());
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Method f = target.getClass().getMethod(mName);
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return f.invoke(target, rest.toArray());
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}
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catch(NoSuchMethodException e) {
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throw new SereneException(
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String.format(
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"Can't find method '%s' on object '%s'.",
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mName,
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this.rest().first()));
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}
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catch (InvocationTargetException e) {
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Throwable cause = e.getCause();
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throw new SereneException(
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String.format(
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"Invocation of '%s' failed because of: %s%n",
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mName, cause.getMessage()));
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}
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catch (IllegalAccessException e) {
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throw new SereneException(
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String.format("Illegal access from '%s'", mName));
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}
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}
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public Object evalInteropProperty(BaseScope scope, Object target, String propertyName)
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throws SereneException {
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try {
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Class<?> targetClass = target.getClass();
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return targetClass.getField(propertyName);
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}
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catch(NoSuchFieldException e) {
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throw new SereneException(
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String.format(
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"Can't find field '%s' on object '%s'.",
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propertyName,
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target.toString()));
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}
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}
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public T first() {
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if (this != EMPTY) {
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return this.first;
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@ -3,6 +3,7 @@ package serene.simple;
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import java.util.HashMap;
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import serene.simple.builtin.PrintlnFn;
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import serene.simple.builtin.QuitFn;
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import serene.simple.builtin.PlusFn;
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public class RootScope extends BaseScope {
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@ -10,6 +11,7 @@ public class RootScope extends BaseScope {
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private final HashMap<String, Object> symbolsMapping = new HashMap<String, Object>() {{
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put("println", new PrintlnFn());
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put("quit", new QuitFn());
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put("+", new PlusFn());
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}};
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// "+", PlusFn,
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// "-", MinusFn,
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@ -0,0 +1,14 @@
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package serene.simple.builtin;
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import serene.simple.BaseScope;
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public class PlusFn extends AFn {
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public String fnName() {
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return "+";
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};
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public Object eval(BaseScope scope) {
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return 0;
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}
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}
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@ -5,7 +5,7 @@ import serene.simple.BaseScope;
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public class QuitFn extends AFn {
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public String fnName() {
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return "println";
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return "quit";
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};
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public Object eval(BaseScope scope) {
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