Initial work on exposing constants

Author: Martin Ruefenacht

src/pympistandard/__init__.py

@@ -4,7 +4,7 @@
 """
 
 
-__all__ = ["PROCEDURES", "KINDS", "CALLBACKS", "PREDEFINED_FUNCTIONS"]
+__all__ = ["PROCEDURES", "KINDS", "CALLBACKS", "PREDEFINED_FUNCTIONS", "CONSTANTS"]
 __author__ = "Martin Ruefenacht"
 __version__ = "0.1"
 

src/pympistandard/constant.py

@@ -0,0 +1,33 @@
+"""
+"""
+
+
+from typing import Mapping
+
+
+class ConstantExpression:
+    def __init__(self, parseset) -> None:
+        self._parseset = parseset
+
+
+class Constant:
+    """
+    Constant is the class which represents a defined global constantwithin the
+    MPI Standard.
+    """
+
+    def __init__(self, name: str, parseset: Mapping) -> None:
+        self._name = name
+        self._parseset = parseset
+
+    @property
+    def name(self) -> str:
+        """Get the Constant name."""
+
+        return self._name
+
+    @property
+    def express(self) -> ConstantExpression:
+        """Get expressions of this Constant."""
+
+        return ConstantExpression(self._parseset)

src/pympistandard/storage.py

@@ -17,10 +17,11 @@
 CALLBACKS = NamespaceDict()
 PREDEFINED_FUNCTIONS = NamespaceDict()
 
-CONSTANTS = NamespaceDict()
+CONSTANTS: MutableMapping[str, "Constant"] = NamespaceDict()
 # to support this the Python DSL in the MPI Standard needs to be extended
 # and all the constants need to be encoded (name, type, value if given)
 
+
 def clear_storage():
     KINDS.clear()
     PROCEDURES.clear()