2 files changed, 87 insertions, 0 deletions
diff --git a/src/edify/builder/builder.py b/src/edify/builder/builder.py
new file mode 100644
index 0000000..2150314
--- /dev/null
+++ b/src/edify/builder/builder.py
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+"""This is the main module for the edify builder. It is responsible for building
+Regular Expressions from simple function chains.
+"""
+
+class RegexBuilder:
+    """RegexBuilder helps build and use regular expressions using its methods.
+    """
+
+    regex = None
+
+    def __init__(self):
+        """Initialize the RegexBuilder.
+        """
+        self.regex = ""
diff --git a/src/edify/builder/datatypes.py b/src/edify/builder/datatypes.py
new file mode 100644
index 0000000..cb3ea13
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+++ b/src/edify/builder/datatypes.py
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+"""
+    This file contains the datatypes used by the edify regex builder.
+
+    The datatypes are:
+        - letter: A single upper or lowercase letter (a-z or A-Z)
+        - digit: A single digit (0-9)
+        - word: A single word (a-z, A-Z, 0-9, _)
+        - space: A single space (\s)
+        - any: Any character or special character
+"""
+
+
+def letter(type: str = "all") -> str:
+    """Returns a regex that matches a single letter.
+
+        Parameters:
+            type (str): The type of letter to match.
+                - "all" (default): Matches any letter (a-z or A-Z)
+                - "upper": Matches any upper case letter (A-Z)
+                - "lower": Matches any lower case letter (a-z)
+
+        Returns:
+            str: A regex that matches a single letter.
+
+        Raises:
+            ValueError: If any of the parameters are invalid.
+    """
+    letters = "abcdefghijklmnopqrstuvwxyz"
+    if type == "upper":
+        letters = letters.upper()
+    elif type == "lower":
+        letters = letters
+    elif type == "all":
+        letters = letters + letters.upper()
+    else:
+        raise ValueError("Invalid letter type: " + type)
+    return "[" + letters + "]"
+
+
+def digit() -> str:
+    """Returns a regex that matches a single digit.
+
+        Returns:
+            str: A regex that matches a single digit.
+    """
+    return "[1234567890]"
+
+
+def word() -> str:
+    """Returns a regex that matches a single word.
+
+        Returns:
+            str: A regex that matches a single word.
+    """
+    return "[abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890_]"
+
+
+def space() -> str:
+    """Returns a regex that matches a single space.
+
+        Returns:
+            str: A regex that matches a single space.
+    """
+    return "[\s]"
+
+
+def any() -> str:
+    """Returns a regex that matches any character.
+
+        Returns:
+            str: A regex that matches any character.
+    """
+    return "."