Exposed Entrypoints for NumExpr infix generation

build.py

@@ -80,20 +80,6 @@ def main() -> None:
         if shared_lib.exists():
             shutil.copy(shared_lib, libvcell_lib_dir / f"libvcell.{ext}")
 
-    # Copy the shared library to libvcell/lib
-    copied = False
-    for ext in ["so", "dylib", "dll"]:
-        shared_lib = vcell_native_dir / f"target/libvcell.{ext}"
-        if shared_lib.exists():
-            shutil.copy(shared_lib, libvcell_lib_dir / f"libvcell.{ext}")
-            copied = True
-            print(f"Copied {shared_lib} to {libvcell_lib_dir}")
-
-    if not copied:
-        print(f"ERROR: No shared library found in {vcell_native_dir / 'target'}", file=sys.stderr)
-        print(f"Contents: {list((vcell_native_dir / 'target').glob('*'))}", file=sys.stderr)
-        sys.exit(1)
-
 
 if __name__ == "__main__":
     main()

libvcell/__init__.py

@@ -1,4 +1,10 @@
-from libvcell.model_utils import sbml_to_vcml, vcell_infix_to_python_infix, vcml_to_sbml, vcml_to_vcml
+from libvcell.model_utils import (
+    sbml_to_vcml,
+    vcell_infix_to_num_expr_infix,
+    vcell_infix_to_python_infix,
+    vcml_to_sbml,
+    vcml_to_vcml,
+)
 from libvcell.solver_utils import sbml_to_finite_volume_input, vcml_to_finite_volume_input
 
 __all__ = [
@@ -8,4 +14,5 @@
     "vcml_to_sbml",
     "vcml_to_vcml",
     "vcell_infix_to_python_infix",
+    "vcell_infix_to_num_expr_infix",
 ]

libvcell/_internal/native_calls.py

@@ -165,3 +165,41 @@ def vcell_infix_to_python_infix(
         except Exception as e:
             logging.exception("Error in vcell_infix_to_python_infix()", exc_info=e)
             raise
+
+    def vcell_infix_to_num_expr_infix(
+        self, vcell_infix: str, target_num_expr_infix: MutableString, buffer_size: int | None = None
+    ) -> ReturnValue:
+        try:
+            needed_buffer_size = int(1.5 * len(vcell_infix)) if buffer_size is None else buffer_size
+            buff = ctypes.create_string_buffer(needed_buffer_size)
+            with IsolateManager(self.lib) as isolate_thread:
+                json_ptr = self.lib.vcellInfixToNumExprInfix(
+                    isolate_thread, ctypes.c_char_p(vcell_infix.encode("utf-8")), buff, needed_buffer_size
+                )
+            value: bytes | None = ctypes.cast(json_ptr, ctypes.c_char_p).value
+            if value is None:
+                logging.error("Failed to regenerate vcml")
+                return ReturnValue(success=False, message="Failed to generate NumExpr infix")
+            json_str = value.decode("utf-8")
+            if "not enough room, need: `" in json_str:
+                if buffer_size is not None:
+                    logging.error("Failed to identify correct buffer size reported by previous error")
+                    return ReturnValue(
+                        success=False, message="Failed to identify correct buffer size reported by previous error"
+                    )
+                # get the size from the error
+                index = json_str.find("not enough room, need: `") + len("not enough room, need: `")
+                end_index = json_str.find("`", index)
+                size_as_string: str = json_str[index:end_index]
+                if not size_as_string.isnumeric():
+                    logging.error("Buffer size reported by previous error is not an integer!")
+                    return ReturnValue(
+                        success=False, message="Buffer size reported by previous error is not an integer!"
+                    )
+                return self.vcell_infix_to_num_expr_infix(vcell_infix, target_num_expr_infix, int(size_as_string))
+            # self.lib.freeString(json_ptr)
+            target_num_expr_infix.value = buff.value.decode("utf-8")
+            return ReturnValue.model_validate_json(json_data=json_str)
+        except Exception as e:
+            logging.exception("Error in vcell_infix_to_num_expr_infix()", exc_info=e)
+            raise

libvcell/_internal/native_utils.py

@@ -61,6 +61,14 @@ def _define_entry_points(self) -> None:
             ctypes.c_longlong,
         ]
 
+        self.lib.vcellInfixToNumExprInfix.restype = ctypes.c_char_p
+        self.lib.vcellInfixToNumExprInfix.argtypes = [
+            ctypes.c_void_p,
+            ctypes.c_char_p,
+            ctypes.c_char_p,
+            ctypes.c_longlong,
+        ]
+
         self.lib.freeString.restype = None
         self.lib.freeString.argtypes = [ctypes.c_char_p]
 

libvcell/model_utils.py

@@ -73,3 +73,19 @@ def vcell_infix_to_python_infix(vcell_infix: str) -> tuple[bool, str, str]:
     target_python_infix = MutableString("")
     return_value: ReturnValue = native.vcell_infix_to_python_infix(vcell_infix, target_python_infix)
     return return_value.success, return_value.message, target_python_infix.value
+
+
+def vcell_infix_to_num_expr_infix(vcell_infix: str) -> tuple[bool, str, str]:
+    """
+    Converts an infix string version of a VCell Native Expression, and converts it to a NumExpr compatible version
+
+    Args:
+        vcell_infix (str): the infix to convert
+
+    Returns:
+        tuple[bool, str, str]: A tuple containing the success status, a message, and the converted infix
+    """
+    native = VCellNativeCalls()
+    target_num_expr_infix = MutableString("")
+    return_value: ReturnValue = native.vcell_infix_to_num_expr_infix(vcell_infix, target_num_expr_infix)
+    return return_value.success, return_value.message, target_num_expr_infix.value

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "poetry.core.masonry.api"
 
 [tool.poetry]
 name = "libvcell"
-version = "0.0.14.4"
+version = "0.0.15"
 description = "This is a python package which wraps a subset of VCell Java code as a native python package."
 authors = ["Jim Schaff <schaff@uchc.edu>", "Ezequiel Valencia <evalencia@uchc.edu>"]
 repository = "https://github.com/virtualcell/libvcell"

tests/test_libvcell.py

@@ -4,6 +4,7 @@
 from libvcell import (
     sbml_to_finite_volume_input,
     sbml_to_vcml,
+    vcell_infix_to_num_expr_infix,
     vcell_infix_to_python_infix,
     vcml_to_finite_volume_input,
     vcml_to_sbml,
@@ -92,7 +93,24 @@ def test_vcell_infix_to_python_infix() -> None:
     assert value == expectedResult
 
 
-def test_bad_vcell_infix() -> None:
+def test_bad_vcell_infix_through_python_conversion() -> None:
     vcellInfix = "id_1 / + / /-  cos(/ / /) id_2"
     success, msg, value = vcell_infix_to_python_infix(vcellInfix)
     assert success is False
+    assert "Parse Error while parsing expression" in msg
+
+
+def test_vcell_infix_to_num_expr_infix() -> None:
+    vcell_infix = "(id_2 || 3.2) * id_1 * csc(id_0 ^ 2.2)"
+    success, msg, value = vcell_infix_to_num_expr_infix(vcell_infix)
+    expectedResult = "(where(((0.0!=id_2) | (0.0!=3.2)), id_1 * (1.0/sin(((id_0)**(2.2)))), 0.0))"
+    assert success is True
+    assert msg == "Success"
+    assert value == expectedResult
+
+
+def test_bad_vcell_infix_through_num_expr_conversion() -> None:
+    vcellInfix = "id_1 / + / /-  cos(/ / /) id_2"
+    success, msg, value = vcell_infix_to_num_expr_infix(vcellInfix)
+    assert success is False
+    assert "Parse Error while parsing expression" in msg

vcell-native/src/main/java/org/vcell/libvcell/Entrypoints.java

@@ -214,7 +214,6 @@ public static CCharPointer entrypoint_vcellInfixToPythonInfix(
 			CCharPointer targetBufferForPythonInfix,
 			long sizeOfBuffer
 	){
-		System.err.println("Entrypoint_vcellInfixToPythonInfix");
 		ReturnValue returnValue;
 		try {
 			String vcellInfix = CTypeConversion.toJavaString(vcellInfixPtr);
@@ -240,4 +239,39 @@ public static CCharPointer entrypoint_vcellInfixToPythonInfix(
 		return createString(json);
 	}
 
+	@CEntryPoint(
+			name = "vcellInfixToNumExprInfix",
+			documentation = """
+                    converts a vcell infix into a NumExpr-safe version"""
+	)
+	public static CCharPointer entrypoint_vcellInfixToNumExprInfix(
+			IsolateThread ignoredThread,
+			CCharPointer vcellInfixPtr,
+			CCharPointer targetBufferForConvertedInfix,
+			long sizeOfBuffer
+	){
+		ReturnValue returnValue;
+		try {
+			String vcellInfix = CTypeConversion.toJavaString(vcellInfixPtr);
+			String numExprInfix = get_numexpr_infix(vcellInfix);
+			if (numExprInfix.length() >= sizeOfBuffer){
+				// not enough room
+				returnValue = new ReturnValue(false, "not enough room, need: `" + numExprInfix.length() + 1 + "`");
+			} else {
+				CTypeConversion.toCString(
+						numExprInfix,
+						targetBufferForConvertedInfix,
+						WordFactory.unsigned(numExprInfix.length() + 1)
+				);
+				returnValue = new ReturnValue(true, "Success");
+			}
+		} catch (Throwable t) {
+			logger.error("Error translating vcell infix to NumExpr infix", t);
+			returnValue = new ReturnValue(false, t.getMessage());
+		}
+		// return result as a json string
+		String json = returnValue.toJson();
+		logger.info("Returning from vcellInfixToNumExprInfix: " + json);
+		return createString(json);
+	}
 }

vcell-native/src/main/java/org/vcell/libvcell/ModelUtils.java

@@ -133,4 +133,11 @@ public static String get_python_infix(String vcellInfix) throws ExpressionExcept
 		VCMongoMessage.enabled = false;
 		return new Expression(vcellInfix).infix_Python();
 	}
+
+	public static String get_numexpr_infix(String vcellInfix) throws ExpressionException {
+		GeometrySpec.avoidAWTImageCreation = true;
+		XmlHelper.cloneUsingXML = true;
+		VCMongoMessage.enabled = false;
+		return new Expression(vcellInfix).infix_NumExpr();
+	}
 }

vcell-native/src/test/java/org/vcell/libvcell/ModelEntrypointsTest.java

@@ -87,4 +87,31 @@ public void test_bad_python_infix_attempt(){
 		assert(false);
 	}
 
+	@Test
+	public void test_get_num_expr_infix(){
+		String vcellInfix = "(id_2 || 3.2) * id_1 * csc(id_0 ^ 2.2)";
+		String convertedInfix;
+		try {
+			convertedInfix = get_numexpr_infix(vcellInfix);
+		} catch (ExpressionException e) {
+			System.err.println("get_python_infix exception: " + e.getMessage());
+			assert(false);
+			return;
+		}
+		String expected = "(where(((0.0!=id_2) | (0.0!=3.2)), id_1 * (1.0/sin(((id_0)**(2.2)))), 0.0))";
+		assert expected.equals(convertedInfix);
+	}
+
+	@Test
+	public void test_bad_num_expr_infix_attempt(){
+		String vcellInfix = "id_1 / + / /-  cos(/ / /) id_2";
+		String convertedInfix;
+		try {
+			convertedInfix = get_numexpr_infix(vcellInfix);
+		} catch (ExpressionException e) {
+			return; // this is what we'd expect
+		}
+		System.err.println("test_bad_python_infix_attempt did not throw an exception");
+		assert(false);
+	}
 }