Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.scl.compiler / src / org / simantics / scl / compiler / constants / JavaComparisonOperation.java

diff --git a/bundles/org.simantics.scl.compiler/src/org/simantics/scl/compiler/constants/JavaComparisonOperation.java b/bundles/org.simantics.scl.compiler/src/org/simantics/scl/compiler/constants/JavaComparisonOperation.java
new file mode 100644 (file)
index 0000000..684e7ed
--- /dev/null
+++ b/bundles/org.simantics.scl.compiler/src/org/simantics/scl/compiler/constants/JavaComparisonOperation.java
@@ -0,0 +1,46 @@
+package org.simantics.scl.compiler.constants;
+
+
+import org.objectweb.asm.Label;
+import org.simantics.scl.compiler.internal.codegen.references.Val;
+import org.simantics.scl.compiler.internal.codegen.types.JavaTypeTranslator;
+import org.simantics.scl.compiler.internal.codegen.utils.MethodBuilder;
+import org.simantics.scl.compiler.types.TVar;
+import org.simantics.scl.compiler.types.Type;
+import org.simantics.scl.compiler.types.Types;
+
+public class JavaComparisonOperation extends FunctionValue {
+    
+    String op;
+    
+    public JavaComparisonOperation(String op, Type type) {
+        super(TVar.EMPTY_ARRAY, Types.NO_EFFECTS, Types.BOOLEAN, type, type);
+        this.op = op;
+    }
+
+    @Override
+    public Type applyExact(MethodBuilder mb, Val[] parameters) {
+        JavaTypeTranslator tt = mb.getJavaTypeTranslator();
+        Label thenBranch = mb.createLabel();
+        Label joinPoint = mb.createLabel();
+        
+        mb.push(parameters[0], type);        
+        mb.push(parameters[1], type);
+        mb.ifComparisonBranch(thenBranch, op, tt.toTypeDesc(parameterTypes[0]));
+        
+        mb.loadConstant(false);
+        mb.branch(joinPoint);
+        
+        mb.setLocation(thenBranch);
+        mb.loadConstant(true);
+        mb.setLocation(joinPoint);
+        
+        return getReturnType();
+    }
+    
+    @Override
+    public String toString() {
+        return "(" + op + ")";
+    }
+
+}