Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.scl.compiler / src / org / simantics / scl / compiler / internal / interpreted / IIf.java

diff --git a/bundles/org.simantics.scl.compiler/src/org/simantics/scl/compiler/internal/interpreted/IIf.java b/bundles/org.simantics.scl.compiler/src/org/simantics/scl/compiler/internal/interpreted/IIf.java
new file mode 100644 (file)
index 0000000..e2588e5
--- /dev/null
+++ b/bundles/org.simantics.scl.compiler/src/org/simantics/scl/compiler/internal/interpreted/IIf.java
@@ -0,0 +1,36 @@
+package org.simantics.scl.compiler.internal.interpreted;
+
+
+public class IIf implements IExpression {
+    private final IExpression condition;
+    private final IExpression thenBranch;
+    private final IExpression elseBranch;
+    
+    public IIf(IExpression condition, IExpression thenBranch,
+            IExpression elseBranch) {
+        this.condition = condition;
+        this.thenBranch = thenBranch;
+        this.elseBranch = elseBranch;
+    }
+
+    @Override
+    public Object execute(Object[] variableBindings) {
+        if((Boolean)condition.execute(variableBindings))
+            return thenBranch.execute(variableBindings);
+        else
+            return elseBranch.execute(variableBindings);
+    }
+    
+    @Override
+    public String toString() {
+        StringBuilder b = new StringBuilder();
+        b.append("(if ");
+        b.append(condition);
+        b.append(" then ");
+        b.append(thenBranch);
+        b.append(" else ");
+        b.append(elseBranch);
+        b.append(')');
+        return b.toString();
+    }
+}