X-Git-Url: https://gerrit.simantics.org/r/gitweb?p=simantics%2Fplatform.git;a=blobdiff_plain;f=bundles%2Forg.simantics.scl.compiler%2Fsrc%2Forg%2Fsimantics%2Fscl%2Fcompiler%2Fconstants%2Fsingletons%2FListLength.java;fp=bundles%2Forg.simantics.scl.compiler%2Fsrc%2Forg%2Fsimantics%2Fscl%2Fcompiler%2Fconstants%2Fsingletons%2FListLength.java;h=148db392db48343878ba099cbc061bd6affc2607;hp=0000000000000000000000000000000000000000;hb=a8758de5bc19e5adb3f618d3038743a164f09912;hpb=12d9af17384d960b75d58c3935d2b7b46d93e87b

diff --git a/bundles/org.simantics.scl.compiler/src/org/simantics/scl/compiler/constants/singletons/ListLength.java b/bundles/org.simantics.scl.compiler/src/org/simantics/scl/compiler/constants/singletons/ListLength.java
new file mode 100644
index 000000000..148db392d
--- /dev/null
+++ b/bundles/org.simantics.scl.compiler/src/org/simantics/scl/compiler/constants/singletons/ListLength.java
@@ -0,0 +1,32 @@
+package org.simantics.scl.compiler.constants.singletons;
+
+import org.cojen.classfile.TypeDesc;
+import org.simantics.scl.compiler.constants.FunctionValue;
+import org.simantics.scl.compiler.internal.codegen.references.Val;
+import org.simantics.scl.compiler.internal.codegen.utils.Constants;
+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;
+import org.simantics.scl.compiler.types.kinds.Kinds;
+
+public class ListLength extends FunctionValue {    
+    private static TVar A = Types.var(Kinds.STAR);
+    public static final ListLength INSTANCE = new ListLength();
+    
+    private ListLength() {
+        super(new TVar[] {A}, Types.NO_EFFECTS, Types.INTEGER, Types.list(A));
+    }
+    
+    @Override
+    public Type applyExact(MethodBuilder mb, Val[] parameters) {
+        parameters[0].push(mb);
+        mb.invokeInterface("java/util/List", "size", TypeDesc.INT, Constants.EMPTY_TYPEDESC_ARRAY);
+        return getReturnType();
+    }
+
+    @Override
+    public String toString() {
+        return "length";
+    }
+}