apply pull and add tests

src/Ast.hs

@@ -1,9 +1,8 @@
 module Ast where
 
-type CompilationUnit = [Class] 
+type CompilationUnit = [Class]
 type DataType = String
-type Identifier = String 
-
+type Identifier = String
 data ParameterDeclaration = ParameterDeclaration DataType Identifier deriving (Show)
 data VariableDeclaration = VariableDeclaration DataType Identifier (Maybe Expression) deriving (Show)
 data Class = Class DataType [MethodDeclaration] [VariableDeclaration] deriving (Show)

src/Example.hs

@@ -1,19 +1,41 @@
 module Example where
 
-import Ast
+import Typecheck
 import Control.Exception (catch, evaluate, SomeException, displayException)
 import Control.Exception.Base
-import Typecheck
+import System.IO (stderr, hPutStrLn)
+-- ANSI color codes
+green, red, yellow, blue, magenta, cyan, white :: String -> String
+green str = "\x1b[32m" ++ str ++ "\x1b[0m"
+red str = "\x1b[31m" ++ str ++ "\x1b[0m"
+yellow str = "\x1b[33m" ++ str ++ "\x1b[0m"
+blue str = "\x1b[34m" ++ str ++ "\x1b[0m"
+magenta str = "\x1b[35m" ++ str ++ "\x1b[0m"
+cyan str = "\x1b[36m" ++ str ++ "\x1b[0m"
+white str = "\x1b[37m" ++ str ++ "\x1b[0m"
+
+-- Custom print function
+printSuccess :: String -> IO ()
+printSuccess msg = putStrLn $ green "Success:" ++ white msg
+
+handleError :: SomeException -> IO ()
+handleError e = hPutStrLn stderr $ red ("Error: " ++ displayException e)
+
+printResult :: Show a => String -> a -> IO ()
+printResult title result = do
+    putStrLn $ green title
+    print result
 
 -- Example classes and their methods and fields
 sampleClasses :: [Class]
 sampleClasses = [
     Class "Person" [
-        MethodDeclaration "void" "setAge" [ParameterDeclaration "Int" "newAge"]
+        MethodDeclaration "void" "setAge" [ParameterDeclaration "int" "newAge"]
         (Block [
             LocalVariableDeclaration (VariableDeclaration "Int" "age" (Just (Reference "newAge")))
         ]),
-        MethodDeclaration "Int" "getAge" [] (Return (Just (Reference "age")))
+        MethodDeclaration "Int" "getAge" [] (Return (Just (Reference "age"))),
+        MethodDeclaration "Person" "Person" [ParameterDeclaration "int" "initialAge"] (Block [])
     ] [
         VariableDeclaration "Int" "age" (Just (IntegerLiteral 25)),
         VariableDeclaration "String" "name" (Just (CharacterLiteral 'A'))
@@ -24,17 +46,25 @@ sampleClasses = [
 initialSymtab :: [(DataType, Identifier)]
 initialSymtab = []
 
--- An example block of statements to type check
 exampleBlock :: Statement
 exampleBlock = Block [
     LocalVariableDeclaration (VariableDeclaration "Person" "bob" (Just (StatementExpressionExpression  (ConstructorCall "Person" [])))),
-    StatementExpressionStatement (MethodCall "setAge" [IntegerLiteral 30]),
+    BinaryOperation NameResolution (Reference "bob") (StatementExpressionExpression (MethodCall "setAge" [IntegerLiteral 30])),
     Return (Just (StatementExpressionExpression (MethodCall "getAge" [])))
     ]
 
 exampleExpression :: Expression
 exampleExpression = BinaryOperation NameResolution (Reference "bob") (Reference "age")
 
+exampleAssignment :: Expression
+exampleAssignment = StatementExpressionExpression (Assignment "a" (IntegerLiteral 30))
+
+exampleMethodCall :: Statement
+exampleMethodCall = StatementExpressionStatement (MethodCall "setAge" [IntegerLiteral 30])
+
+exampleConstructorCall :: Statement
+exampleConstructorCall = LocalVariableDeclaration (VariableDeclaration "Person" "bob" (Just (StatementExpressionExpression  (ConstructorCall "Person" [IntegerLiteral 30]))))
+
 -- Function to perform type checking and handle errors
 runTypeCheck :: IO ()
 runTypeCheck = do
@@ -44,7 +74,31 @@ runTypeCheck = do
     --print evaluatedBlock
     
     -- Evaluate the expression
-    evaluatedExpression <- evaluate (typeCheckExpression exampleExpression [("bob", "Person"), ("age", "int")] sampleClasses)
-    putStrLn "Type checking of expression completed successfully:"
-    print evaluatedExpression
+    catch (do
+        print "====================================================================================="
+        evaluatedExpression <- evaluate (typeCheckExpression exampleExpression [("bob", "Person")] sampleClasses)
+        printSuccess "Type checking of expression completed successfully"
+        printResult "Result Expression:" evaluatedExpression
+      ) handleError
+    
+    catch (do
+        print "====================================================================================="
+        evaluatedAssignment <- evaluate (typeCheckExpression exampleAssignment [("a", "int")] sampleClasses)
+        printSuccess "Type checking of assignment completed successfully"
+        printResult "Result Assignment:" evaluatedAssignment
+      ) handleError
+
+    catch (do
+        print "====================================================================================="
+        evaluatedMethodCall <- evaluate (typeCheckStatement exampleMethodCall [("this", "Person"), ("setAge", "Person"), ("getAge", "Person")] sampleClasses)
+        printSuccess "Type checking of method call this completed successfully"
+        printResult "Result MethodCall:" evaluatedMethodCall
+      ) handleError
+
+    catch (do
+        print "====================================================================================="
+        evaluatedConstructorCall <- evaluate (typeCheckStatement exampleConstructorCall [] sampleClasses)
+        printSuccess "Type checking of constructor call completed successfully"
+        printResult "Result Constructor Call:" evaluatedConstructorCall
+      ) handleError