1 files changed, 58 insertions, 0 deletions
diff --git a/src/ee/part/requirement.py b/src/ee/part/requirement.py
new file mode 100644
index 0000000..a9381df
--- /dev/null
+++ b/src/ee/part/requirement.py
@@ -0,0 +1,58 @@
+from typing import List
+
+from ee.part import Part, fact_keys, FactType, common_fact_types
+
+
+class Requirement(object):
+    def __init__(self, part: Part):
+        self.part = part
+
+
+class EqualRequirement(Requirement):
+    def __init__(self, part: Part, fact_type: FactType, value: str):
+        super().__init__(part)
+        self.fact_type = fact_type
+        self.value = value
+
+    def __str__(self):
+        return "{}.{} == {}".format(self.part.printable_reference, self.fact_type, self.value)
+
+
+class MinRequirement(Requirement):
+    def __init__(self, part: Part, fact_type: FactType, value: str):
+        super().__init__(part)
+        self.fact_type = fact_type
+        self.value = value
+
+    def __str__(self):
+        return "{}.{} == {}".format(self.part.printable_reference, self.fact_type, self.value)
+
+
+class MaxRequirement(Requirement):
+    def __init__(self, part: Part, fact_type: FactType, value: str):
+        super().__init__(part)
+        self.fact_type = fact_type
+        self.value = value
+
+    def __str__(self):
+        return "{}.{} == {}".format(self.part.printable_reference, self.fact_type, self.value)
+
+
+class PartAnalysis(object):
+    def __init__(self, part: Part, requirements: List[Requirement]):
+        self.part = part
+        self.requirements = requirements
+
+
+def analyze_requirements(part: Part) -> PartAnalysis:
+    rs = []
+
+    resistance = part.find_fact(common_fact_types.resistance.uri)
+    if resistance:
+        rs.append(EqualRequirement(part, common_fact_types.resistance, resistance.valueProp))
+
+    capacitance = part.find_fact(common_fact_types.capacitance.uri)
+    if capacitance:
+        rs.append(EqualRequirement(part, common_fact_types.capacitance, capacitance.valueProp))
+
+    return PartAnalysis(part, rs)