Migrated source code from Simantics SVN

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

diff --git a/bundles/org.simantics.scl.compiler/src/org/simantics/scl/compiler/internal/interpreted/IApply.java b/bundles/org.simantics.scl.compiler/src/org/simantics/scl/compiler/internal/interpreted/IApply.java
new file mode 100644 (file)
index 0000000..8b5bede
--- /dev/null
+++ b/bundles/org.simantics.scl.compiler/src/org/simantics/scl/compiler/internal/interpreted/IApply.java
@@ -0,0 +1,44 @@
+package org.simantics.scl.compiler.internal.interpreted;
+
+import org.simantics.scl.runtime.function.Function;
+
+public class IApply implements IExpression {
+    private final IExpression function;
+    private final IExpression[] parameters;
+    
+    public IApply(IExpression function, IExpression[] parameters) {
+        if(function instanceof IApply) {
+            IApply apply = (IApply)function;
+            this.function = apply.function;
+            this.parameters = new IExpression[apply.parameters.length + parameters.length];
+            System.arraycopy(apply.parameters, 0, this.parameters, 0, apply.parameters.length);
+            System.arraycopy(parameters, 0, this.parameters, apply.parameters.length, parameters.length);
+        }
+        else {
+            this.function = function;
+            this.parameters = parameters;
+        }
+    }
+
+    @SuppressWarnings("rawtypes")
+    @Override
+    public Object execute(Object[] variableBindings) {
+        Object[] parameterValues = new Object[parameters.length];
+        for(int i=0;i<parameters.length;++i)
+            parameterValues[i] = parameters[i].execute(variableBindings);
+        return ((Function)function.execute(variableBindings)).applyArray(parameterValues);
+    }
+    
+    @Override
+    public String toString() {
+        StringBuilder b = new StringBuilder();
+        b.append('(');
+        b.append(function);
+        for(IExpression parameter : parameters) {
+            b.append(' ');
+            b.append(parameter);
+        }
+        b.append(')');
+        return b.toString();
+    }
+}