Number cot operation

finos · Jul 27, 2023 · d1ed956 · d1ed956
1 parent 190f44e
commit d1ed956
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Showing 6 changed files with 59 additions and 0 deletions.
diff --git a/pylegend/core/databse/sql_to_string/db_extension.py b/pylegend/core/databse/sql_to_string/db_extension.py
@@ -98,6 +98,7 @@
     ArcCosineExpression,
     TanExpression,
     ArcTanExpression,
+    CotExpression,
 )
 
 
@@ -384,6 +385,8 @@ def expression_processor(
         return extension.process_tan_expression(expression, config)
     elif isinstance(expression, ArcTanExpression):
         return extension.process_arc_tan_expression(expression, config)
+    elif isinstance(expression, CotExpression):
+        return extension.process_cot_expression(expression, config)
     else:
         raise ValueError("Unsupported expression type: " + str(type(expression)))  # pragma: no cover
 
@@ -1080,6 +1083,11 @@ def process_arc_tan_expression(self, expr: ArcTanExpression, config: SqlToString
             value=self.process_expression(expr.value, config)
         )
 
+    def process_cot_expression(self, expr: CotExpression, config: SqlToStringConfig) -> str:
+        return "COT({value})".format(
+            value=self.process_expression(expr.value, config)
+        )
+
     def process_qualified_name(self, qualified_name: QualifiedName, config: SqlToStringConfig) -> str:
         return qualified_name_processor(qualified_name, self, config)
 

diff --git a/pylegend/core/language/operations/number_operation_expressions.py b/pylegend/core/language/operations/number_operation_expressions.py
@@ -50,6 +50,7 @@
     ArcCosineExpression,
     TanExpression,
     ArcTanExpression,
+    CotExpression,
 )
 
 
@@ -79,6 +80,7 @@
     "PyLegendNumberArcCosineExpression",
     "PyLegendNumberTanExpression",
     "PyLegendNumberArcTanExpression",
+    "PyLegendNumberCotExpression",
 ]
 
 
@@ -577,3 +579,22 @@ def __init__(self, operand: PyLegendExpressionNumberReturn) -> None:
             operand,
             PyLegendNumberArcTanExpression.__to_sql_func
         )
+
+
+class PyLegendNumberCotExpression(PyLegendUnaryExpression, PyLegendExpressionNumberReturn):
+
+    @staticmethod
+    def __to_sql_func(
+            expression: Expression,
+            frame_name_to_base_query_map: PyLegendDict[str, QuerySpecification],
+            config: FrameToSqlConfig
+    ) -> Expression:
+        return CotExpression(expression)
+
+    def __init__(self, operand: PyLegendExpressionNumberReturn) -> None:
+        PyLegendExpressionNumberReturn.__init__(self)
+        PyLegendUnaryExpression.__init__(
+            self,
+            operand,
+            PyLegendNumberCotExpression.__to_sql_func
+        )
diff --git a/pylegend/core/language/primitives/number.py b/pylegend/core/language/primitives/number.py
@@ -54,6 +54,7 @@
     PyLegendNumberArcCosineExpression,
     PyLegendNumberTanExpression,
     PyLegendNumberArcTanExpression,
+    PyLegendNumberCotExpression,
 )
 from pylegend.core.sql.metamodel import (
     Expression,
@@ -259,6 +260,9 @@ def tan(self) -> "PyLegendNumber":
     def atan(self) -> "PyLegendNumber":
         return PyLegendNumber(PyLegendNumberArcTanExpression(self.__value))
 
+    def cot(self) -> "PyLegendNumber":
+        return PyLegendNumber(PyLegendNumberCotExpression(self.__value))
+
     def round(
             self,
             n: PyLegendOptional[int] = None

diff --git a/pylegend/core/sql/metamodel_extension.py b/pylegend/core/sql/metamodel_extension.py
@@ -46,6 +46,7 @@
     "ArcCosineExpression",
     "TanExpression",
     "ArcTanExpression",
+    "CotExpression",
 ]
 
 
@@ -327,3 +328,14 @@ def __init__(
     ) -> None:
         super().__init__(_type="arcTanExpression")
         self.value = value
+
+
+class CotExpression(Expression):
+    value: "Expression"
+
+    def __init__(
+        self,
+        value: "Expression",
+    ) -> None:
+        super().__init__(_type="cotExpression")
+        self.value = value
diff --git a/pylegend/tests/core/database/test_sql_to_string.py b/pylegend/tests/core/database/test_sql_to_string.py
@@ -95,6 +95,7 @@
     ArcCosineExpression,
     TanExpression,
     ArcTanExpression,
+    CotExpression,
 )
 
 
@@ -1351,3 +1352,10 @@ def test_process_arc_tan_expression(self) -> None:
 
         expr = ArcTanExpression(DoubleLiteral(0.5))
         assert extension.process_expression(expr, config) == "ATAN(0.5)"
+
+    def test_process_cot_expression(self) -> None:
+        extension = SqlToStringDbExtension()
+        config = SqlToStringConfig(SqlToStringFormat(pretty=False))
+
+        expr = CotExpression(IntegerLiteral(10))
+        assert extension.process_expression(expr, config) == "COT(10)"
diff --git a/pylegend/tests/core/language/primitives/test_number.py b/pylegend/tests/core/language/primitives/test_number.py
@@ -233,6 +233,12 @@ def test_number_arc_tan_expr(self) -> None:
         assert self.__generate_sql_string(lambda x: (x.get_number("col2") + x.get_number("col1")).atan()) == \
                'ATAN(("root".col2 + "root".col1))'
 
+    def test_number_cot_expr(self) -> None:
+        assert self.__generate_sql_string(lambda x: x.get_number("col2").cot()) == \
+               'COT("root".col2)'
+        assert self.__generate_sql_string(lambda x: (x.get_number("col2") + x.get_number("col1")).cot()) == \
+               'COT(("root".col2 + "root".col1))'
+
     def __generate_sql_string(self, f) -> str:  # type: ignore
         return self.db_extension.process_expression(
             f(self.tds_row).to_sql_expression({"t": self.base_query}, self.frame_to_sql_config),