Update import arrangement

.idea/codeStyles/Project.xml

@@ -4,6 +4,19 @@
       <option name="DO_NOT_WRAP_AFTER_SINGLE_ANNOTATION" value="true" />
       <option name="ANNOTATION_PARAMETER_WRAP" value="5" />
       <option name="ALIGN_MULTILINE_ANNOTATION_PARAMETERS" value="true" />
+      <option name="CLASS_COUNT_TO_USE_IMPORT_ON_DEMAND" value="99" />
+      <option name="NAMES_COUNT_TO_USE_IMPORT_ON_DEMAND" value="99" />
+      <option name="IMPORT_LAYOUT_TABLE">
+        <value>
+          <emptyLine />
+          <package name="" withSubpackages="true" static="false" />
+          <emptyLine />
+          <package name="javax" withSubpackages="true" static="false" />
+          <package name="java" withSubpackages="true" static="false" />
+          <emptyLine />
+          <package name="" withSubpackages="true" static="true" />
+        </value>
+      </option>
     </JavaCodeStyleSettings>
     <XML>
       <option name="XML_SPACE_INSIDE_EMPTY_TAG" value="true" />

src/main/application/LispMain.java

@@ -1,8 +1,14 @@
 package application;
 
-import static com.googlecode.lanterna.terminal.IOSafeTerminalAdapter.createRuntimeExceptionConvertingAdapter;
-import static java.text.MessageFormat.format;
-import static terminal.LispTerminal.END_OF_SEGMENT;
+import com.googlecode.lanterna.terminal.DefaultTerminalFactory;
+import com.googlecode.lanterna.terminal.IOSafeTerminal;
+import com.googlecode.lanterna.terminal.Terminal;
+import interpreter.LispInterpreter;
+import interpreter.LispInterpreterBuilder;
+import interpreter.LispInterpreterBuilderImpl;
+import stream.UncheckedIOException;
+import terminal.LispTerminal;
+import terminal.TerminalConfiguration;
 
 import java.io.IOException;
 import java.io.PipedInputStream;
@@ -10,16 +16,9 @@ import java.io.PipedOutputStream;
 import java.io.PrintStream;
 import java.util.function.Function;
 
-import com.googlecode.lanterna.terminal.DefaultTerminalFactory;
-import com.googlecode.lanterna.terminal.IOSafeTerminal;
-import com.googlecode.lanterna.terminal.Terminal;
-
-import interpreter.LispInterpreter;
-import interpreter.LispInterpreterBuilder;
-import interpreter.LispInterpreterBuilderImpl;
-import stream.UncheckedIOException;
-import terminal.LispTerminal;
-import terminal.TerminalConfiguration;
+import static com.googlecode.lanterna.terminal.IOSafeTerminalAdapter.createRuntimeExceptionConvertingAdapter;
+import static java.text.MessageFormat.format;
+import static terminal.LispTerminal.END_OF_SEGMENT;
 
 public class LispMain {
 

src/main/environment/RuntimeEnvironment.java

@@ -1,11 +1,11 @@
 package environment;
 
+import error.ErrorManager;
+
 import java.io.InputStream;
 import java.io.PrintStream;
 import java.util.function.Function;
 
-import error.ErrorManager;
-
 public class RuntimeEnvironment {
 
     private static RuntimeEnvironment uniqueInstance = new RuntimeEnvironment();

src/main/error/CriticalLineColumnException.java

@@ -1,10 +1,10 @@
 package error;
 
-import static error.ErrorManager.Severity.CRITICAL;
-
 import error.ErrorManager.Severity;
 import file.FilePosition;
 
+import static error.ErrorManager.Severity.CRITICAL;
+
 public abstract class CriticalLineColumnException extends LineColumnException {
 
     private static final long serialVersionUID = 1L;

src/main/error/CriticalLispException.java

@@ -1,9 +1,9 @@
 package error;
 
-import static error.ErrorManager.Severity.CRITICAL;
-
 import error.ErrorManager.Severity;
 
+import static error.ErrorManager.Severity.CRITICAL;
+
 public abstract class CriticalLispException extends LispException {
 
     private static final long serialVersionUID = 1L;

src/main/error/ErrorManager.java

@@ -1,13 +1,13 @@
 package error;
 
+import environment.RuntimeEnvironment;
+
+import java.io.PrintStream;
+
 import static error.ErrorManager.Severity.CRITICAL;
 import static error.ErrorManager.Severity.WARNING;
 import static java.text.MessageFormat.format;
 
-import java.io.PrintStream;
-
-import environment.RuntimeEnvironment;
-
 /**
  * Prints error messages and potentially terminates the application.
  */

src/main/error/LineColumnException.java

@@ -1,9 +1,9 @@
 package error;
 
-import static java.text.MessageFormat.format;
-
 import file.FilePosition;
 
+import static java.text.MessageFormat.format;
+
 public abstract class LineColumnException extends LispException {
 
     private static final long serialVersionUID = 1L;

src/main/error/LispException.java

@@ -1,9 +1,9 @@
 package error;
 
-import static error.ErrorManager.Severity.ERROR;
-
 import error.ErrorManager.Severity;
 
+import static error.ErrorManager.Severity.ERROR;
+
 public abstract class LispException extends RuntimeException {
 
     private static final long serialVersionUID = 1L;

src/main/error/LispWarning.java

@@ -1,9 +1,9 @@
 package error;
 
-import static error.ErrorManager.Severity.WARNING;
-
 import error.ErrorManager.Severity;
 
+import static error.ErrorManager.Severity.WARNING;
+
 public abstract class LispWarning extends LispException {
 
     private static final long serialVersionUID = 1L;

src/main/function/ArgumentValidator.java

@@ -1,15 +1,15 @@
 package function;
 
-import static function.builtin.cons.LENGTH.getLength;
-import static java.text.MessageFormat.format;
-
-import java.math.BigInteger;
-
 import error.LispException;
 import sexpression.Cons;
 import sexpression.DisplayName;
 import sexpression.SExpression;
 
+import java.math.BigInteger;
+
+import static function.builtin.cons.LENGTH.getLength;
+import static java.text.MessageFormat.format;
+
 public class ArgumentValidator {
 
     private Class<? extends SExpression> firstArgumentType;

src/main/function/UserDefinedFunction.java

@@ -1,12 +1,5 @@
 package function;
 
-import static function.builtin.EVAL.eval;
-import static java.text.MessageFormat.format;
-import static recursion.TailCalls.done;
-import static sexpression.Nil.NIL;
-
-import java.util.ArrayList;
-
 import error.LispException;
 import recursion.TailCall;
 import recursion.TailCalls;
@@ -16,6 +9,13 @@ import sexpression.Symbol;
 import table.ExecutionContext;
 import table.SymbolTable;
 
+import java.util.ArrayList;
+
+import static function.builtin.EVAL.eval;
+import static java.text.MessageFormat.format;
+import static recursion.TailCalls.done;
+import static sexpression.Nil.NIL;
+
 public class UserDefinedFunction extends LispFunction {
 
     private static final String KEYWORD_REST = "&REST";

src/main/function/builtin/APPLY.java

@@ -1,15 +1,15 @@
 package function.builtin;
 
-import static function.builtin.EVAL.applyFunction;
-import static function.builtin.EVAL.lookupFunctionOrLambda;
-import static table.FunctionTable.lookupFunction;
-
 import function.ArgumentValidator;
 import function.FunctionNames;
 import function.LispFunction;
 import sexpression.Cons;
 import sexpression.SExpression;
 
+import static function.builtin.EVAL.applyFunction;
+import static function.builtin.EVAL.lookupFunctionOrLambda;
+import static table.FunctionTable.lookupFunction;
+
 @FunctionNames({ "APPLY" })
 public class APPLY extends LispFunction {
 

src/main/function/builtin/BackquoteEvaluator.java

@@ -1,8 +1,5 @@
 package function.builtin;
 
-import static function.builtin.EVAL.eval;
-import static sexpression.Nil.NIL;
-
 import error.LispException;
 import function.ArgumentValidator;
 import sexpression.AtSignExpression;
@@ -11,6 +8,9 @@ import sexpression.CommaExpression;
 import sexpression.Cons;
 import sexpression.SExpression;
 
+import static function.builtin.EVAL.eval;
+import static sexpression.Nil.NIL;
+
 class BackquoteEvaluator {
 
     private ArgumentValidator listValidator;

src/main/function/builtin/EVAL.java

@@ -1,13 +1,5 @@
 package function.builtin;
 
-import static function.builtin.cons.LIST.makeList;
-import static function.builtin.special.LAMBDA.createFunction;
-import static function.builtin.special.LAMBDA.isLambdaExpression;
-import static java.text.MessageFormat.format;
-import static sexpression.Nil.NIL;
-import static sexpression.Symbol.T;
-import static table.FunctionTable.lookupFunction;
-
 import error.LispException;
 import function.ArgumentValidator;
 import function.FunctionNames;
@@ -20,6 +12,14 @@ import sexpression.SExpression;
 import sexpression.Symbol;
 import table.ExecutionContext;
 
+import static function.builtin.cons.LIST.makeList;
+import static function.builtin.special.LAMBDA.createFunction;
+import static function.builtin.special.LAMBDA.isLambdaExpression;
+import static java.text.MessageFormat.format;
+import static sexpression.Nil.NIL;
+import static sexpression.Symbol.T;
+import static table.FunctionTable.lookupFunction;
+
 @FunctionNames({ "EVAL" })
 public class EVAL extends LispFunction {
 

src/main/function/builtin/EXIT.java

@@ -1,7 +1,5 @@
 package function.builtin;
 
-import static sexpression.Nil.NIL;
-
 import environment.RuntimeEnvironment;
 import function.ArgumentValidator;
 import function.FunctionNames;
@@ -9,6 +7,8 @@ import function.LispFunction;
 import sexpression.Cons;
 import sexpression.SExpression;
 
+import static sexpression.Nil.NIL;
+
 @FunctionNames({ "EXIT" })
 public class EXIT extends LispFunction {
 

src/main/function/builtin/FUNCALL.java

@@ -1,14 +1,14 @@
 package function.builtin;
 
-import static function.builtin.APPLY.apply;
-import static function.builtin.cons.LIST.makeList;
-
 import function.ArgumentValidator;
 import function.FunctionNames;
 import function.LispFunction;
 import sexpression.Cons;
 import sexpression.SExpression;
 
+import static function.builtin.APPLY.apply;
+import static function.builtin.cons.LIST.makeList;
+
 @FunctionNames({ "FUNCALL", "CALL" })
 public class FUNCALL extends LispFunction {
 

src/main/function/builtin/GENSYM.java

@@ -1,7 +1,5 @@
 package function.builtin;
 
-import java.math.BigInteger;
-
 import function.ArgumentValidator;
 import function.FunctionNames;
 import function.LispFunction;
@@ -9,6 +7,8 @@ import sexpression.Cons;
 import sexpression.SExpression;
 import sexpression.Symbol;
 
+import java.math.BigInteger;
+
 @FunctionNames({ "GENSYM" })
 public class GENSYM extends LispFunction {
 

src/main/function/builtin/LOAD.java

@@ -1,15 +1,5 @@
 package function.builtin;
 
-import static function.builtin.EVAL.eval;
-import static java.text.MessageFormat.format;
-import static sexpression.Nil.NIL;
-import static sexpression.Symbol.T;
-import static util.Path.getPathPrefix;
-
-import java.io.FileInputStream;
-import java.io.FileNotFoundException;
-import java.util.Stack;
-
 import environment.RuntimeEnvironment;
 import error.LispException;
 import error.LispWarning;
@@ -21,6 +11,16 @@ import sexpression.Cons;
 import sexpression.LispString;
 import sexpression.SExpression;
 
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.util.Stack;
+
+import static function.builtin.EVAL.eval;
+import static java.text.MessageFormat.format;
+import static sexpression.Nil.NIL;
+import static sexpression.Symbol.T;
+import static util.Path.getPathPrefix;
+
 @FunctionNames({ "LOAD" })
 public class LOAD extends LispFunction {
 

src/main/function/builtin/SET.java

@@ -1,7 +1,5 @@
 package function.builtin;
 
-import static table.FunctionTable.lookupFunction;
-
 import function.ArgumentValidator;
 import function.FunctionNames;
 import function.LispFunction;
@@ -11,6 +9,8 @@ import sexpression.Symbol;
 import table.ExecutionContext;
 import table.SymbolTable;
 
+import static table.FunctionTable.lookupFunction;
+
 @FunctionNames({ "SET" })
 public class SET extends LispFunction {
 

src/main/function/builtin/SYMBOL_FUNCTION.java

@@ -1,8 +1,5 @@
 package function.builtin;
 
-import static java.text.MessageFormat.format;
-import static table.FunctionTable.lookupFunction;
-
 import error.LispException;
 import function.ArgumentValidator;
 import function.FunctionNames;
@@ -13,6 +10,9 @@ import sexpression.Cons;
 import sexpression.SExpression;
 import sexpression.Symbol;
 
+import static java.text.MessageFormat.format;
+import static table.FunctionTable.lookupFunction;
+
 @FunctionNames({ "SYMBOL-FUNCTION" })
 public class SYMBOL_FUNCTION extends LispFunction {
 

src/main/function/builtin/cons/APPEND.java

@@ -1,13 +1,13 @@
 package function.builtin.cons;
 
-import static sexpression.Nil.NIL;
-import static table.FunctionTable.lookupFunction;
-
 import function.ArgumentValidator;
 import function.FunctionNames;
 import function.LispFunction;
 import sexpression.Cons;
 
+import static sexpression.Nil.NIL;
+import static table.FunctionTable.lookupFunction;
+
 @FunctionNames({ "APPEND" })
 public class APPEND extends LispFunction {
 

src/main/function/builtin/cons/LENGTH.java

@@ -1,12 +1,5 @@
 package function.builtin.cons;
 
-import static function.builtin.cons.LIST.makeList;
-import static recursion.TailCalls.done;
-import static recursion.TailCalls.tailCall;
-import static table.FunctionTable.lookupFunction;
-
-import java.math.BigInteger;
-
 import function.ArgumentValidator;
 import function.FunctionNames;
 import function.LispFunction;
@@ -14,6 +7,13 @@ import recursion.TailCall;
 import sexpression.Cons;
 import sexpression.LispNumber;
 
+import java.math.BigInteger;
+
+import static function.builtin.cons.LIST.makeList;
+import static recursion.TailCalls.done;
+import static recursion.TailCalls.tailCall;
+import static table.FunctionTable.lookupFunction;
+
 @FunctionNames({ "LENGTH" })
 public class LENGTH extends LispFunction {
 

src/main/function/builtin/cons/LIST.java

@@ -1,13 +1,13 @@
 package function.builtin.cons;
 
-import static sexpression.Nil.NIL;
-
 import function.ArgumentValidator;
 import function.FunctionNames;
 import function.LispFunction;
 import sexpression.Cons;
 import sexpression.SExpression;
 
+import static sexpression.Nil.NIL;
+
 @FunctionNames({ "LIST" })
 public class LIST extends LispFunction {
 

src/main/function/builtin/math/DIVIDE.java

@@ -1,7 +1,5 @@
 package function.builtin.math;
 
-import java.math.BigInteger;
-
 import error.LispException;
 import function.ArgumentValidator;
 import function.FunctionNames;
@@ -9,6 +7,8 @@ import function.LispFunction;
 import sexpression.Cons;
 import sexpression.LispNumber;
 
+import java.math.BigInteger;
+
 @FunctionNames({ "/" })
 public class DIVIDE extends LispFunction {
 

src/main/function/builtin/math/MINUS.java

@@ -1,13 +1,13 @@
 package function.builtin.math;
 
-import java.math.BigInteger;
-
 import function.ArgumentValidator;
 import function.FunctionNames;
 import function.LispFunction;
 import sexpression.Cons;
 import sexpression.LispNumber;
 
+import java.math.BigInteger;
+
 @FunctionNames({ "-" })
 public class MINUS extends LispFunction {
 

src/main/function/builtin/math/MULTIPLY.java

@@ -1,13 +1,13 @@
 package function.builtin.math;
 
-import static sexpression.LispNumber.ONE;
-
 import function.ArgumentValidator;
 import function.FunctionNames;
 import function.LispFunction;
 import sexpression.Cons;
 import sexpression.LispNumber;
 
+import static sexpression.LispNumber.ONE;
+
 @FunctionNames({ "*" })
 public class MULTIPLY extends LispFunction {
 

src/main/function/builtin/math/MathFunction.java

@@ -1,16 +1,16 @@
 package function.builtin.math;
 
-import static recursion.TailCalls.done;
-import static recursion.TailCalls.tailCall;
-
-import java.util.function.BiFunction;
-import java.util.function.Function;
-
 import recursion.TailCall;
 import sexpression.Cons;
 import sexpression.LispNumber;
 import sexpression.SExpression;
 
+import java.util.function.BiFunction;
+import java.util.function.Function;
+
+import static recursion.TailCalls.done;
+import static recursion.TailCalls.tailCall;
+
 class MathFunction {
 
     Function<LispNumber, LispNumber> singleValueOperation;

src/main/function/builtin/math/PLUS.java

@@ -1,13 +1,13 @@
 package function.builtin.math;
 
-import static sexpression.LispNumber.ZERO;
-
 import function.ArgumentValidator;
 import function.FunctionNames;
 import function.LispFunction;
 import sexpression.Cons;
 import sexpression.LispNumber;
 
+import static sexpression.LispNumber.ZERO;
+
 @FunctionNames({ "+" })
 public class PLUS extends LispFunction {
 

src/main/function/builtin/predicate/ATOM.java

@@ -1,14 +1,14 @@
 package function.builtin.predicate;
 
-import static sexpression.Nil.NIL;
-import static sexpression.Symbol.T;
-
 import function.ArgumentValidator;
 import function.FunctionNames;
 import function.LispFunction;
 import sexpression.Cons;
 import sexpression.SExpression;
 
+import static sexpression.Nil.NIL;
+import static sexpression.Symbol.T;
+
 @FunctionNames({ "ATOM", "ATOM?" })
 public class ATOM extends LispFunction {
 

src/main/function/builtin/predicate/EQ.java

@@ -1,14 +1,14 @@
 package function.builtin.predicate;
 
-import static sexpression.Nil.NIL;
-import static sexpression.Symbol.T;
-
 import function.ArgumentValidator;
 import function.FunctionNames;
 import function.LispFunction;
 import sexpression.Cons;
 import sexpression.SExpression;
 
+import static sexpression.Nil.NIL;
+import static sexpression.Symbol.T;
+
 @FunctionNames({ "EQ", "EQ?" })
 public class EQ extends LispFunction {
 

src/main/function/builtin/predicate/EQUAL.java

@@ -1,14 +1,14 @@
 package function.builtin.predicate;
 
-import static sexpression.Nil.NIL;
-import static sexpression.Symbol.T;
-
 import function.ArgumentValidator;
 import function.FunctionNames;
 import function.LispFunction;
 import sexpression.Cons;
 import sexpression.SExpression;
 
+import static sexpression.Nil.NIL;
+import static sexpression.Symbol.T;
+
 @FunctionNames({ "EQUAL", "EQUAL?" })
 public class EQUAL extends LispFunction {
 

src/main/function/builtin/predicate/GENSYM_EQUAL.java

@@ -1,8 +1,10 @@
 package function.builtin.predicate;
 
-import static function.builtin.GENSYM.GENSYM_PREFIX;
-import static sexpression.Nil.NIL;
-import static sexpression.Symbol.T;
+import function.ArgumentValidator;
+import function.FunctionNames;
+import function.LispFunction;
+import sexpression.Cons;
+import sexpression.SExpression;
 
 import java.util.HashMap;
 import java.util.Map;
@@ -10,11 +12,9 @@ import java.util.Map.Entry;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
-import function.ArgumentValidator;
-import function.FunctionNames;
-import function.LispFunction;
-import sexpression.Cons;
-import sexpression.SExpression;
+import static function.builtin.GENSYM.GENSYM_PREFIX;
+import static sexpression.Nil.NIL;
+import static sexpression.Symbol.T;
 
 @FunctionNames({ "GENSYM-EQUAL", "GENSYM-EQUAL?" })
 public class GENSYM_EQUAL extends LispFunction {

src/main/function/builtin/predicate/LISTP.java

@@ -1,14 +1,14 @@
 package function.builtin.predicate;
 
-import static sexpression.Nil.NIL;
-import static sexpression.Symbol.T;
-
 import function.ArgumentValidator;
 import function.FunctionNames;
 import function.LispFunction;
 import sexpression.Cons;
 import sexpression.SExpression;
 
+import static sexpression.Nil.NIL;
+import static sexpression.Symbol.T;
+
 @FunctionNames({ "LISTP", "LIST?" })
 public class LISTP extends LispFunction {
 

src/main/function/builtin/predicate/NULL.java

@@ -1,14 +1,14 @@
 package function.builtin.predicate;
 
-import static sexpression.Nil.NIL;
-import static sexpression.Symbol.T;
-
 import function.ArgumentValidator;
 import function.FunctionNames;
 import function.LispFunction;
 import sexpression.Cons;
 import sexpression.SExpression;
 
+import static sexpression.Nil.NIL;
+import static sexpression.Symbol.T;
+
 @FunctionNames({ "NULL", "NULL?" })
 public class NULL extends LispFunction {
 

src/main/function/builtin/predicate/NUMERIC_EQUAL.java

@@ -1,10 +1,5 @@
 package function.builtin.predicate;
 
-import static recursion.TailCalls.done;
-import static recursion.TailCalls.tailCall;
-import static sexpression.Nil.NIL;
-import static sexpression.Symbol.T;
-
 import function.ArgumentValidator;
 import function.FunctionNames;
 import function.LispFunction;
@@ -13,6 +8,11 @@ import sexpression.Cons;
 import sexpression.LispNumber;
 import sexpression.SExpression;
 
+import static recursion.TailCalls.done;
+import static recursion.TailCalls.tailCall;
+import static sexpression.Nil.NIL;
+import static sexpression.Symbol.T;
+
 @FunctionNames({ "=" })
 public class NUMERIC_EQUAL extends LispFunction {
 

src/main/function/builtin/predicate/NUMERIC_GREATER.java

@@ -1,10 +1,5 @@
 package function.builtin.predicate;
 
-import static recursion.TailCalls.done;
-import static recursion.TailCalls.tailCall;
-import static sexpression.Nil.NIL;
-import static sexpression.Symbol.T;
-
 import function.ArgumentValidator;
 import function.FunctionNames;
 import function.LispFunction;
@@ -13,6 +8,11 @@ import sexpression.Cons;
 import sexpression.LispNumber;
 import sexpression.SExpression;
 
+import static recursion.TailCalls.done;
+import static recursion.TailCalls.tailCall;
+import static sexpression.Nil.NIL;
+import static sexpression.Symbol.T;
+
 @FunctionNames({ ">" })
 public class NUMERIC_GREATER extends LispFunction {
 

src/main/function/builtin/predicate/NUMERIC_LESS.java

@@ -1,10 +1,5 @@
 package function.builtin.predicate;
 
-import static recursion.TailCalls.done;
-import static recursion.TailCalls.tailCall;
-import static sexpression.Nil.NIL;
-import static sexpression.Symbol.T;
-
 import function.ArgumentValidator;
 import function.FunctionNames;
 import function.LispFunction;
@@ -13,6 +8,11 @@ import sexpression.Cons;
 import sexpression.LispNumber;
 import sexpression.SExpression;
 
+import static recursion.TailCalls.done;
+import static recursion.TailCalls.tailCall;
+import static sexpression.Nil.NIL;
+import static sexpression.Symbol.T;
+
 @FunctionNames({ "<" })
 public class NUMERIC_LESS extends LispFunction {
 

src/main/function/builtin/special/AND.java

@@ -1,10 +1,5 @@
 package function.builtin.special;
 
-import static function.builtin.EVAL.eval;
-import static recursion.TailCalls.done;
-import static recursion.TailCalls.tailCall;
-import static sexpression.Symbol.T;
-
 import function.ArgumentValidator;
 import function.FunctionNames;
 import function.LispSpecialFunction;
@@ -12,6 +7,11 @@ import recursion.TailCall;
 import sexpression.Cons;
 import sexpression.SExpression;
 
+import static function.builtin.EVAL.eval;
+import static recursion.TailCalls.done;
+import static recursion.TailCalls.tailCall;
+import static sexpression.Symbol.T;
+
 @FunctionNames({ "AND" })
 public class AND extends LispSpecialFunction {
 

src/main/function/builtin/special/CASE.java

@@ -1,12 +1,5 @@
 package function.builtin.special;
 
-import static function.builtin.EVAL.eval;
-import static function.builtin.predicate.EQUAL.isEqual;
-import static recursion.TailCalls.done;
-import static recursion.TailCalls.tailCall;
-import static sexpression.Nil.NIL;
-import static sexpression.Symbol.T;
-
 import function.ArgumentValidator;
 import function.FunctionNames;
 import function.LispSpecialFunction;
@@ -15,6 +8,13 @@ import sexpression.Cons;
 import sexpression.Nil;
 import sexpression.SExpression;
 
+import static function.builtin.EVAL.eval;
+import static function.builtin.predicate.EQUAL.isEqual;
+import static recursion.TailCalls.done;
+import static recursion.TailCalls.tailCall;
+import static sexpression.Nil.NIL;
+import static sexpression.Symbol.T;
+
 @FunctionNames({ "CASE" })
 public class CASE extends LispSpecialFunction {
 

src/main/function/builtin/special/COND.java

@@ -1,10 +1,5 @@
 package function.builtin.special;
 
-import static function.builtin.EVAL.eval;
-import static recursion.TailCalls.done;
-import static recursion.TailCalls.tailCall;
-import static sexpression.Nil.NIL;
-
 import function.ArgumentValidator;
 import function.FunctionNames;
 import function.LispSpecialFunction;
@@ -13,6 +8,11 @@ import sexpression.Cons;
 import sexpression.Nil;
 import sexpression.SExpression;
 
+import static function.builtin.EVAL.eval;
+import static recursion.TailCalls.done;
+import static recursion.TailCalls.tailCall;
+import static sexpression.Nil.NIL;
+
 @FunctionNames({ "COND" })
 public class COND extends LispSpecialFunction {
 

src/main/function/builtin/special/Define.java

@@ -1,10 +1,5 @@
 package function.builtin.special;
 
-import static function.builtin.cons.LIST.makeList;
-import static java.text.MessageFormat.format;
-import static table.FunctionTable.defineFunction;
-import static table.FunctionTable.isAlreadyDefined;
-
 import environment.RuntimeEnvironment;
 import error.LispWarning;
 import function.ArgumentValidator;
@@ -14,6 +9,11 @@ import sexpression.Cons;
 import sexpression.SExpression;
 import sexpression.Symbol;
 
+import static function.builtin.cons.LIST.makeList;
+import static java.text.MessageFormat.format;
+import static table.FunctionTable.defineFunction;
+import static table.FunctionTable.isAlreadyDefined;
+
 public abstract class Define extends LispSpecialFunction {
 
     private ArgumentValidator argumentValidator;

src/main/function/builtin/special/IF.java

@@ -1,13 +1,13 @@
 package function.builtin.special;
 
-import static function.builtin.EVAL.eval;
-
 import function.ArgumentValidator;
 import function.FunctionNames;
 import function.LispSpecialFunction;
 import sexpression.Cons;
 import sexpression.SExpression;
 
+import static function.builtin.EVAL.eval;
+
 @FunctionNames({ "IF" })
 public class IF extends LispSpecialFunction {
 

src/main/function/builtin/special/LAMBDA.java

@@ -1,7 +1,5 @@
 package function.builtin.special;
 
-import static function.builtin.cons.LIST.makeList;
-
 import function.ArgumentValidator;
 import function.FunctionNames;
 import function.LispSpecialFunction;
@@ -11,6 +9,8 @@ import sexpression.LambdaExpression;
 import sexpression.SExpression;
 import sexpression.Symbol;
 
+import static function.builtin.cons.LIST.makeList;
+
 @FunctionNames({ "LAMBDA", "Λ" })
 public class LAMBDA extends LispSpecialFunction {
 

src/main/function/builtin/special/LET.java

@@ -1,8 +1,5 @@
 package function.builtin.special;
 
-import static function.builtin.EVAL.eval;
-import static sexpression.Nil.NIL;
-
 import function.ArgumentValidator;
 import function.FunctionNames;
 import function.LispSpecialFunction;
@@ -12,6 +9,9 @@ import sexpression.Symbol;
 import table.ExecutionContext;
 import table.SymbolTable;
 
+import static function.builtin.EVAL.eval;
+import static sexpression.Nil.NIL;
+
 @FunctionNames({ "LET" })
 public class LET extends LispSpecialFunction {
 

src/main/function/builtin/special/OR.java

@@ -1,9 +1,5 @@
 package function.builtin.special;
 
-import static function.builtin.EVAL.eval;
-import static recursion.TailCalls.done;
-import static recursion.TailCalls.tailCall;
-
 import function.ArgumentValidator;
 import function.FunctionNames;
 import function.LispSpecialFunction;
@@ -11,6 +7,10 @@ import recursion.TailCall;
 import sexpression.Cons;
 import sexpression.SExpression;
 
+import static function.builtin.EVAL.eval;
+import static recursion.TailCalls.done;
+import static recursion.TailCalls.tailCall;
+
 @FunctionNames({ "OR" })
 public class OR extends LispSpecialFunction {
 

src/main/function/builtin/special/PROGN.java

@@ -1,10 +1,5 @@
 package function.builtin.special;
 
-import static function.builtin.EVAL.eval;
-import static recursion.TailCalls.done;
-import static recursion.TailCalls.tailCall;
-import static sexpression.Nil.NIL;
-
 import function.ArgumentValidator;
 import function.FunctionNames;
 import function.LispSpecialFunction;
@@ -12,6 +7,11 @@ import recursion.TailCall;
 import sexpression.Cons;
 import sexpression.SExpression;
 
+import static function.builtin.EVAL.eval;
+import static recursion.TailCalls.done;
+import static recursion.TailCalls.tailCall;
+import static sexpression.Nil.NIL;
+
 @FunctionNames({ "PROGN", "BEGIN" })
 public class PROGN extends LispSpecialFunction {
 

src/main/function/builtin/special/RECUR.java

@@ -1,7 +1,5 @@
 package function.builtin.special;
 
-import static function.builtin.EVAL.evaluateFunctionArgumentList;
-
 import error.LispException;
 import function.ArgumentValidator;
 import function.FunctionNames;
@@ -10,6 +8,8 @@ import sexpression.Cons;
 import sexpression.SExpression;
 import table.ExecutionContext;
 
+import static function.builtin.EVAL.evaluateFunctionArgumentList;
+
 @FunctionNames({ "RECUR" })
 public class RECUR extends LispSpecialFunction {
 

src/main/function/builtin/special/SETQ.java

@@ -1,9 +1,5 @@
 package function.builtin.special;
 
-import static function.builtin.EVAL.eval;
-import static function.builtin.SET.set;
-import static function.builtin.cons.LIST.makeList;
-
 import function.ArgumentValidator;
 import function.FunctionNames;
 import function.LispSpecialFunction;
@@ -11,6 +7,10 @@ import sexpression.Cons;
 import sexpression.SExpression;
 import sexpression.Symbol;
 
+import static function.builtin.EVAL.eval;
+import static function.builtin.SET.set;
+import static function.builtin.cons.LIST.makeList;
+
 @FunctionNames({ "SETQ" })
 public class SETQ extends LispSpecialFunction {
 

src/main/interpreter/LispInterpreter.java

@@ -1,15 +1,15 @@
 package interpreter;
 
-import static function.builtin.EVAL.eval;
-
-import java.io.InputStream;
-import java.util.List;
-
 import environment.RuntimeEnvironment;
 import error.LispException;
 import parser.LispParser;
 import sexpression.SExpression;
 
+import java.io.InputStream;
+import java.util.List;
+
+import static function.builtin.EVAL.eval;
+
 public class LispInterpreter {
 
     protected RuntimeEnvironment environment;

src/main/interpreter/LispInterpreterBuilderImpl.java

@@ -1,6 +1,9 @@
 package interpreter;
 
-import static util.Path.getPathPrefix;
+import environment.RuntimeEnvironment;
+import error.CriticalLispException;
+import error.ErrorManager;
+import interpreter.LispInterpreter.LanguageFile;
 
 import java.io.FileInputStream;
 import java.io.FileNotFoundException;
@@ -10,10 +13,7 @@ import java.util.ArrayList;
 import java.util.List;
 import java.util.function.Function;
 
-import environment.RuntimeEnvironment;
-import error.CriticalLispException;
-import error.ErrorManager;
-import interpreter.LispInterpreter.LanguageFile;
+import static util.Path.getPathPrefix;
 
 public class LispInterpreterBuilderImpl implements LispInterpreterBuilder {
 

src/main/parser/LispParser.java

@@ -1,13 +1,13 @@
 package parser;
 
-import java.io.InputStream;
-
 import error.LispException;
 import scanner.LispScanner;
 import sexpression.SExpression;
 import token.Eof;
 import token.Token;
 
+import java.io.InputStream;
+
 /**
  * Converts a stream of bytes into internal representations of Lisp s-expressions.
  */

src/main/recursion/TailCall.java

@@ -16,14 +16,10 @@ public interface TailCall<T> {
     }
 
     default T invoke() {
-        // @formatter:off
-
         return Stream.iterate(this, TailCall::apply)
                      .filter(TailCall::isComplete)
                      .findFirst()
                      .get()
                      .result();
-
-        // @formatter:on
     }
 }

src/main/scanner/LispCommentRemovingInputStream.java

@@ -1,15 +1,15 @@
 package scanner;
 
+import stream.SafeInputStream;
+
+import java.io.InputStream;
+
 import static util.Characters.BACKSLASH;
 import static util.Characters.DOUBLE_QUOTE;
 import static util.Characters.EOF;
 import static util.Characters.NEWLINE;
 import static util.Characters.SEMICOLON;
 
-import java.io.InputStream;
-
-import stream.SafeInputStream;
-
 /**
  * Removes Lisp comments from an input stream.
  */

src/main/scanner/LispScanner.java

@@ -1,5 +1,16 @@
 package scanner;
 
+import error.LineColumnException;
+import file.FilePosition;
+import file.FilePositionTracker;
+import token.Token;
+import token.TokenFactory;
+import token.TokenFactoryImpl;
+import util.Characters;
+
+import java.io.InputStream;
+import java.util.function.Function;
+
 import static java.lang.Character.isDigit;
 import static java.lang.Character.isWhitespace;
 import static util.Characters.BACKSLASH;
@@ -9,17 +20,6 @@ import static util.Characters.NEWLINE;
 import static util.Characters.isLegalIdentifierCharacter;
 import static util.Characters.isNumberPrefix;
 
-import java.io.InputStream;
-import java.util.function.Function;
-
-import error.LineColumnException;
-import file.FilePosition;
-import file.FilePositionTracker;
-import token.Token;
-import token.TokenFactory;
-import token.TokenFactoryImpl;
-import util.Characters;
-
 /**
  * Converts a stream of bytes into a stream of Lisp tokens.
  */

src/main/sexpression/Cons.java

@@ -1,10 +1,10 @@
 package sexpression;
 
+import recursion.TailCall;
+
 import static recursion.TailCalls.done;
 import static recursion.TailCalls.tailCall;
 
-import recursion.TailCall;
-
 @DisplayName("list")
 public class Cons extends SExpression {
 

src/main/sexpression/LispNumber.java

@@ -1,10 +1,10 @@
 package sexpression;
 
-import static java.text.MessageFormat.format;
+import error.LispException;
 
 import java.math.BigInteger;
 
-import error.LispException;
+import static java.text.MessageFormat.format;
 
 @DisplayName("number")
 public class LispNumber extends Atom {

src/main/stream/SafeInputStream.java

@@ -1,11 +1,11 @@
 package stream;
 
-import static java.nio.charset.StandardCharsets.UTF_8;
-
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.InputStreamReader;
 
+import static java.nio.charset.StandardCharsets.UTF_8;
+
 public class SafeInputStream {
 
     private InputStreamReader underlyingStream;

src/main/stream/UncheckedIOException.java

@@ -1,9 +1,9 @@
 package stream;
 
-import java.io.IOException;
-
 import error.CriticalLispException;
 
+import java.io.IOException;
+
 public class UncheckedIOException extends CriticalLispException {
 
     private static final long serialVersionUID = 1L;

src/main/table/ExecutionContext.java

@@ -1,13 +1,13 @@
 package table;
 
-import static sexpression.Nil.NIL;
-
-import java.util.Stack;
-
 import function.LispFunction;
 import sexpression.Cons;
 import sexpression.SExpression;
 
+import java.util.Stack;
+
+import static sexpression.Nil.NIL;
+
 public class ExecutionContext {
 
     private static ExecutionContext uniqueInstance = new ExecutionContext();

src/main/table/FunctionTable.java

@@ -1,12 +1,5 @@
 package table;
 
-import static java.text.MessageFormat.format;
-
-import java.util.HashMap;
-import java.util.HashSet;
-import java.util.Map;
-import java.util.Set;
-
 import error.CriticalLispException;
 import function.FunctionNames;
 import function.LispFunction;
@@ -58,6 +51,13 @@ import function.builtin.special.QUOTE;
 import function.builtin.special.RECUR;
 import function.builtin.special.SETQ;
 
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
+
+import static java.text.MessageFormat.format;
+
 public class FunctionTable {
 
     private static Set<Class<? extends LispFunction>> allBuiltIns = new HashSet<>();

src/main/table/SymbolTable.java

@@ -1,17 +1,17 @@
 package table;
 
-import static function.builtin.cons.APPEND.append;
-import static function.builtin.cons.LIST.makeList;
-import static sexpression.Nil.NIL;
+import sexpression.Cons;
+import sexpression.SExpression;
+import sexpression.Symbol;
 
 import java.util.HashMap;
 import java.util.Map.Entry;
 import java.util.Set;
 import java.util.TreeMap;
 
-import sexpression.Cons;
-import sexpression.SExpression;
-import sexpression.Symbol;
+import static function.builtin.cons.APPEND.append;
+import static function.builtin.cons.LIST.makeList;
+import static sexpression.Nil.NIL;
 
 public class SymbolTable {
 

src/main/terminal/ControlSequenceHandler.java

@@ -1,12 +1,12 @@
 package terminal;
 
+import stream.SafeInputStream;
+
 import static java.lang.Character.isDigit;
 import static util.Characters.EOF;
 import static util.Characters.LEFT_SQUARE_BRACKET;
 import static util.Characters.UNICODE_ESCAPE;
 
-import stream.SafeInputStream;
-
 class ControlSequenceHandler {
 
     public static final boolean isEscape(char c) {

src/main/terminal/ControlSequenceLookup.java

@@ -1,11 +1,11 @@
 package terminal;
 
-import static terminal.SelectGraphicRendition.SGR_COMMAND;
+import terminal.ControlSequence.NullControlSequence;
 
 import java.util.HashMap;
 import java.util.Map;
 
-import terminal.ControlSequence.NullControlSequence;
+import static terminal.SelectGraphicRendition.SGR_COMMAND;
 
 public class ControlSequenceLookup {
 

src/main/terminal/LispTerminal.java

@@ -1,5 +1,17 @@
 package terminal;
 
+import com.googlecode.lanterna.TerminalPosition;
+import com.googlecode.lanterna.TerminalSize;
+import com.googlecode.lanterna.input.KeyStroke;
+import com.googlecode.lanterna.input.KeyType;
+import com.googlecode.lanterna.terminal.IOSafeTerminal;
+import stream.SafeInputStream;
+import stream.SafeOutputStream;
+
+import java.io.ByteArrayInputStream;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+
 import static com.googlecode.lanterna.input.KeyType.ArrowDown;
 import static com.googlecode.lanterna.input.KeyType.ArrowLeft;
 import static com.googlecode.lanterna.input.KeyType.ArrowRight;
@@ -12,19 +24,6 @@ import static terminal.ControlSequenceHandler.isEscape;
 import static util.Characters.EOF;
 import static util.Characters.UNICODE_NULL;
 
-import java.io.ByteArrayInputStream;
-import java.util.concurrent.ExecutorService;
-import java.util.concurrent.Executors;
-
-import com.googlecode.lanterna.TerminalPosition;
-import com.googlecode.lanterna.TerminalSize;
-import com.googlecode.lanterna.input.KeyStroke;
-import com.googlecode.lanterna.input.KeyType;
-import com.googlecode.lanterna.terminal.IOSafeTerminal;
-
-import stream.SafeInputStream;
-import stream.SafeOutputStream;
-
 public class LispTerminal {
 
     public static final char END_OF_SEGMENT = UNICODE_NULL;

src/main/terminal/TerminalConfiguration.java

@@ -1,13 +1,12 @@
 package terminal;
 
+import com.googlecode.lanterna.terminal.IOSafeTerminal;
+import stream.UncheckedIOException;
+
 import java.io.IOException;
 import java.io.PipedInputStream;
 import java.io.PipedOutputStream;
 
-import com.googlecode.lanterna.terminal.IOSafeTerminal;
-
-import stream.UncheckedIOException;
-
 public class TerminalConfiguration {
 
     private PipedOutputStream inputWriter;

src/main/token/AtSign.java

@@ -1,11 +1,11 @@
 package token;
 
-import java.util.function.Supplier;
-
 import file.FilePosition;
 import sexpression.AtSignExpression;
 import sexpression.SExpression;
 
+import java.util.function.Supplier;
+
 public class AtSign extends Token {
 
     public AtSign(String text, FilePosition position) {

src/main/token/Backquote.java

@@ -1,11 +1,11 @@
 package token;
 
-import java.util.function.Supplier;
-
 import file.FilePosition;
 import sexpression.BackquoteExpression;
 import sexpression.SExpression;
 
+import java.util.function.Supplier;
+
 public class Backquote extends Token {
 
     public Backquote(String text, FilePosition position) {

src/main/token/Comma.java

@@ -1,11 +1,11 @@
 package token;
 
-import java.util.function.Supplier;
-
 import file.FilePosition;
 import sexpression.CommaExpression;
 import sexpression.SExpression;
 
+import java.util.function.Supplier;
+
 public class Comma extends Token {
 
     public Comma(String text, FilePosition position) {

src/main/token/Eof.java

@@ -1,11 +1,11 @@
 package token;
 
-import java.util.function.Supplier;
-
 import error.LineColumnException;
 import file.FilePosition;
 import sexpression.SExpression;
 
+import java.util.function.Supplier;
+
 public class Eof extends Token {
 
     public Eof(String text, FilePosition position) {

src/main/token/Identifier.java

@@ -1,11 +1,11 @@
 package token;
 
-import java.util.function.Supplier;
-
 import file.FilePosition;
 import sexpression.SExpression;
 import sexpression.Symbol;
 
+import java.util.function.Supplier;
+
 public class Identifier extends Token {
 
     public Identifier(String text, FilePosition position) {

src/main/token/LeftParenthesis.java

@@ -1,10 +1,10 @@
 package token;
 
-import java.util.function.Supplier;
-
 import file.FilePosition;
 import sexpression.SExpression;
 
+import java.util.function.Supplier;
+
 public class LeftParenthesis extends Token {
 
     public LeftParenthesis(String text, FilePosition position) {

src/main/token/Number.java

@@ -1,11 +1,11 @@
 package token;
 
-import java.util.function.Supplier;
-
 import file.FilePosition;
 import sexpression.LispNumber;
 import sexpression.SExpression;
 
+import java.util.function.Supplier;
+
 public class Number extends Token {
 
     public Number(String text, FilePosition position) {

src/main/token/QuoteMark.java

@@ -1,14 +1,14 @@
 package token;
 
-import static sexpression.Nil.NIL;
-
-import java.util.function.Supplier;
-
 import file.FilePosition;
 import sexpression.Cons;
 import sexpression.SExpression;
 import sexpression.Symbol;
 
+import java.util.function.Supplier;
+
+import static sexpression.Nil.NIL;
+
 public class QuoteMark extends Token {
 
     public QuoteMark(String text, FilePosition position) {

src/main/token/QuotedString.java

@@ -1,11 +1,11 @@
 package token;
 
-import java.util.function.Supplier;
-
 import file.FilePosition;
 import sexpression.LispString;
 import sexpression.SExpression;
 
+import java.util.function.Supplier;
+
 public class QuotedString extends Token {
 
     public QuotedString(String text, FilePosition position) {

src/main/token/RightParenthesis.java

@@ -1,16 +1,16 @@
 package token;
 
-import static recursion.TailCalls.done;
-import static sexpression.Nil.NIL;
-
-import java.util.function.Supplier;
-
 import error.LineColumnException;
 import file.FilePosition;
 import recursion.TailCall;
 import sexpression.Cons;
 import sexpression.SExpression;
 
+import java.util.function.Supplier;
+
+import static recursion.TailCalls.done;
+import static sexpression.Nil.NIL;
+
 public class RightParenthesis extends Token {
 
     public RightParenthesis(String text, FilePosition position) {

src/main/token/Token.java

@@ -1,15 +1,15 @@
 package token;
 
-import static recursion.TailCalls.tailCall;
-import static sexpression.Nil.NIL;
-
-import java.util.function.Supplier;
-
 import file.FilePosition;
 import recursion.TailCall;
 import sexpression.Cons;
 import sexpression.SExpression;
 
+import java.util.function.Supplier;
+
+import static recursion.TailCalls.tailCall;
+import static sexpression.Nil.NIL;
+
 public abstract class Token {
 
     private String text;

src/main/token/TokenFactory.java

@@ -1,11 +1,11 @@
 package token;
 
-import static java.text.MessageFormat.format;
-
 import error.CriticalLineColumnException;
 import error.LineColumnException;
 import file.FilePosition;
 
+import static java.text.MessageFormat.format;
+
 public interface TokenFactory {
 
     Token createToken(String text, FilePosition position);

src/main/token/TokenFactoryImpl.java

@@ -1,5 +1,7 @@
 package token;
 
+import file.FilePosition;
+
 import static java.lang.Character.isDigit;
 import static util.Characters.AT_SIGN;
 import static util.Characters.BACKQUOTE;
@@ -11,8 +13,6 @@ import static util.Characters.SINGLE_QUOTE;
 import static util.Characters.isLegalIdentifierCharacter;
 import static util.Characters.isNumberPrefix;
 
-import file.FilePosition;
-
 public class TokenFactoryImpl implements TokenFactory {
 
     @Override

src/test/acceptance/AcceptanceTest.java

@@ -1,8 +1,7 @@
 package acceptance;
 
-import org.junit.runner.RunWith;
-
 import fitnesse.junit.FitNesseRunner;
+import org.junit.runner.RunWith;
 
 @RunWith(FitNesseRunner.class)
 @FitNesseRunner.Suite("TranscendentalLisp")

src/test/acceptance/fixture/LispInterpreterFixture.java

@@ -1,8 +1,10 @@
 package acceptance.fixture;
 
-import static application.LispMain.LANGUAGE_FILE_NAMES;
-import static table.FunctionTable.resetFunctionTable;
-import static util.Path.getPathPrefix;
+import environment.RuntimeEnvironment;
+import interpreter.LispInterpreter;
+import interpreter.LispInterpreterBuilder;
+import interpreter.LispInterpreterBuilderImpl;
+import table.ExecutionContext;
 
 import java.io.ByteArrayInputStream;
 import java.io.ByteArrayOutputStream;
@@ -10,11 +12,9 @@ import java.io.FileInputStream;
 import java.io.FileNotFoundException;
 import java.io.PrintStream;
 
-import environment.RuntimeEnvironment;
-import interpreter.LispInterpreter;
-import interpreter.LispInterpreterBuilder;
-import interpreter.LispInterpreterBuilderImpl;
-import table.ExecutionContext;
+import static application.LispMain.LANGUAGE_FILE_NAMES;
+import static table.FunctionTable.resetFunctionTable;
+import static util.Path.getPathPrefix;
 
 public class LispInterpreterFixture {
 

src/test/application/MainTest.java

@@ -1,31 +1,29 @@
 package application;
 
-import static com.googlecode.lanterna.input.KeyType.Enter;
-import static java.text.MessageFormat.format;
-import static application.LispMain.ANSI_GREEN;
-import static application.LispMain.ANSI_PURPLE;
-import static application.LispMain.ANSI_RESET;
-import static application.LispMain.GREETING;
-import static org.junit.Assert.assertEquals;
-
-import java.io.PipedInputStream;
-import java.io.PipedOutputStream;
-import java.util.concurrent.CountDownLatch;
-
+import com.googlecode.lanterna.terminal.virtual.DefaultVirtualTerminal;
+import environment.RuntimeEnvironment;
+import interpreter.LispInterpreterBuilderImpl;
 import org.junit.Rule;
 import org.junit.Test;
 import org.junit.contrib.java.lang.system.ExpectedSystemExit;
 import org.junit.contrib.java.lang.system.SystemErrRule;
 import org.junit.contrib.java.lang.system.SystemOutRule;
-
-import com.googlecode.lanterna.terminal.virtual.DefaultVirtualTerminal;
-
-import environment.RuntimeEnvironment;
-import interpreter.LispInterpreterBuilderImpl;
 import terminal.TerminalConfiguration;
 import terminal.VirtualTerminalInteractor;
 import testutil.SymbolAndFunctionCleaner;
 
+import java.io.PipedInputStream;
+import java.io.PipedOutputStream;
+import java.util.concurrent.CountDownLatch;
+
+import static application.LispMain.ANSI_GREEN;
+import static application.LispMain.ANSI_PURPLE;
+import static application.LispMain.ANSI_RESET;
+import static application.LispMain.GREETING;
+import static com.googlecode.lanterna.input.KeyType.Enter;
+import static java.text.MessageFormat.format;
+import static org.junit.Assert.assertEquals;
+
 public class MainTest extends SymbolAndFunctionCleaner {
 
     private RuntimeEnvironment environment;

src/test/environment/RuntimeEnvironmentTest.java

@@ -1,19 +1,18 @@
 package environment;
 
+import error.ErrorManager;
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+
+import java.util.HashSet;
+import java.util.Set;
+
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertNull;
 import static org.junit.Assert.assertTrue;
 import static org.junit.Assert.fail;
 
-import java.util.HashSet;
-import java.util.Set;
-
-import org.junit.After;
-import org.junit.Before;
-import org.junit.Test;
-
-import error.ErrorManager;
-
 public class RuntimeEnvironmentTest {
 
     private static final String TERMINATED_SUCCESSFULLY = "TERMINATED_SUCCESSFULLY";

src/test/error/ErrorManagerTest.java

@@ -1,22 +1,21 @@
 package error;
 
-import static error.ErrorManager.Severity.CRITICAL;
-import static error.ErrorManager.Severity.ERROR;
-import static error.ErrorManager.Severity.WARNING;
-import static org.junit.Assert.assertFalse;
-import static org.junit.Assert.assertTrue;
+import environment.RuntimeEnvironment;
+import error.ErrorManager.Severity;
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
 
 import java.io.ByteArrayOutputStream;
 import java.io.PrintStream;
 import java.util.HashSet;
 import java.util.Set;
 
-import org.junit.After;
-import org.junit.Before;
-import org.junit.Test;
-
-import environment.RuntimeEnvironment;
-import error.ErrorManager.Severity;
+import static error.ErrorManager.Severity.CRITICAL;
+import static error.ErrorManager.Severity.ERROR;
+import static error.ErrorManager.Severity.WARNING;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
 
 public class ErrorManagerTest {
 

src/test/file/FilePositionTrackerTest.java

@@ -1,12 +1,12 @@
 package file;
 
-import static org.junit.Assert.assertTrue;
-
-import java.util.Objects;
-
 import org.junit.Before;
 import org.junit.Test;
 
+import java.util.Objects;
+
+import static org.junit.Assert.assertTrue;
+
 public class FilePositionTrackerTest {
 
     public static final String FILE_NAME = "testFile";

src/test/function/ArgumentValidatorTest.java

@@ -1,5 +1,17 @@
 package function;
 
+import function.ArgumentValidator.BadArgumentTypeException;
+import function.ArgumentValidator.DottedArgumentListException;
+import function.ArgumentValidator.TooFewArgumentsException;
+import function.ArgumentValidator.TooManyArgumentsException;
+import org.junit.Before;
+import org.junit.Test;
+import sexpression.Cons;
+import sexpression.LispString;
+import sexpression.Nil;
+import sexpression.SExpression;
+import sexpression.Symbol;
+
 import static error.ErrorManager.Severity.ERROR;
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertNotNull;
@@ -7,19 +19,6 @@ import static org.junit.Assert.assertTrue;
 import static sexpression.Nil.NIL;
 import static sexpression.Symbol.T;
 
-import org.junit.Before;
-import org.junit.Test;
-
-import function.ArgumentValidator.BadArgumentTypeException;
-import function.ArgumentValidator.DottedArgumentListException;
-import function.ArgumentValidator.TooFewArgumentsException;
-import function.ArgumentValidator.TooManyArgumentsException;
-import sexpression.Cons;
-import sexpression.LispString;
-import sexpression.Nil;
-import sexpression.SExpression;
-import sexpression.Symbol;
-
 public class ArgumentValidatorTest {
 
     private ArgumentValidator validator;

src/test/function/LispFunctionTest.java

@@ -1,12 +1,11 @@
 package function;
 
-import static org.junit.Assert.assertTrue;
-
 import org.junit.Test;
-
 import sexpression.Cons;
 import sexpression.SExpression;
 
+import static org.junit.Assert.assertTrue;
+
 public class LispFunctionTest {
 
     @Test

src/test/function/LispSpecialFunctionTest.java

@@ -1,12 +1,11 @@
 package function;
 
-import static org.junit.Assert.assertFalse;
-
 import org.junit.Test;
-
 import sexpression.Cons;
 import sexpression.SExpression;
 
+import static org.junit.Assert.assertFalse;
+
 public class LispSpecialFunctionTest {
 
     @Test

src/test/function/UserDefinedFunctionTest.java

@@ -1,22 +1,21 @@
 package function;
 
+import error.ErrorManager;
+import function.ArgumentValidator.TooFewArgumentsException;
+import function.ArgumentValidator.TooManyArgumentsException;
+import function.UserDefinedFunction.IllegalKeywordRestPositionException;
+import org.junit.Test;
+import sexpression.Cons;
+import sexpression.LispNumber;
+import sexpression.SExpression;
+import sexpression.Symbol;
+
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertNotNull;
 import static org.junit.Assert.assertTrue;
 import static sexpression.Nil.NIL;
 import static testutil.TestUtilities.assertSExpressionsMatch;
 
-import org.junit.Test;
-
-import error.ErrorManager;
-import function.ArgumentValidator.TooFewArgumentsException;
-import function.ArgumentValidator.TooManyArgumentsException;
-import function.UserDefinedFunction.IllegalKeywordRestPositionException;
-import sexpression.Cons;
-import sexpression.LispNumber;
-import sexpression.SExpression;
-import sexpression.Symbol;
-
 public class UserDefinedFunctionTest {
 
     private static final String FUNCTION_NAME = "TEST";

src/test/function/builtin/APPLYTest.java

@@ -1,20 +1,19 @@
 package function.builtin;
 
-import static function.builtin.APPLY.apply;
-import static testutil.TestUtilities.assertSExpressionsMatch;
-import static testutil.TestUtilities.evaluateString;
-import static testutil.TestUtilities.parseString;
-
-import org.junit.Test;
-
 import function.ArgumentValidator.BadArgumentTypeException;
 import function.ArgumentValidator.DottedArgumentListException;
 import function.ArgumentValidator.TooFewArgumentsException;
 import function.ArgumentValidator.TooManyArgumentsException;
 import function.builtin.EVAL.UndefinedFunctionException;
+import org.junit.Test;
 import sexpression.Cons;
 import testutil.SymbolAndFunctionCleaner;
 
+import static function.builtin.APPLY.apply;
+import static testutil.TestUtilities.assertSExpressionsMatch;
+import static testutil.TestUtilities.evaluateString;
+import static testutil.TestUtilities.parseString;
+
 public class APPLYTest extends SymbolAndFunctionCleaner {
 
     @Test

src/test/function/builtin/BackquoteEvaluatorTest.java

@@ -1,18 +1,11 @@
 package function.builtin;
 
-import static sexpression.Nil.NIL;
-import static sexpression.Symbol.T;
-import static testutil.TestUtilities.assertIsErrorWithMessage;
-import static testutil.TestUtilities.assertSExpressionsMatch;
-import static testutil.TestUtilities.makeList;
-
-import org.junit.Test;
-
 import function.ArgumentValidator.DottedArgumentListException;
 import function.builtin.BackquoteEvaluator.AtSignNotInCommaException;
 import function.builtin.BackquoteEvaluator.AtSignNotListException;
 import function.builtin.BackquoteEvaluator.NestedAtSignException;
 import function.builtin.BackquoteEvaluator.NestedCommaException;
+import org.junit.Test;
 import sexpression.AtSignExpression;
 import sexpression.BackquoteExpression;
 import sexpression.CommaExpression;
@@ -22,6 +15,12 @@ import sexpression.LispString;
 import sexpression.SExpression;
 import sexpression.Symbol;
 
+import static sexpression.Nil.NIL;
+import static sexpression.Symbol.T;
+import static testutil.TestUtilities.assertIsErrorWithMessage;
+import static testutil.TestUtilities.assertSExpressionsMatch;
+import static testutil.TestUtilities.makeList;
+
 public class BackquoteEvaluatorTest {
 
     private BackquoteEvaluator createBackquoteEvaluator(SExpression expression) {

src/test/function/builtin/EVALTest.java

@@ -1,16 +1,5 @@
 package function.builtin;
 
-import static function.builtin.EVAL.lookupSymbol;
-import static org.junit.Assert.assertNull;
-import static org.junit.Assert.fail;
-import static sexpression.Nil.NIL;
-import static testutil.TestUtilities.assertIsErrorWithMessage;
-import static testutil.TestUtilities.assertSExpressionsMatch;
-import static testutil.TestUtilities.evaluateString;
-import static testutil.TestUtilities.parseString;
-
-import org.junit.Test;
-
 import function.ArgumentValidator.DottedArgumentListException;
 import function.ArgumentValidator.TooFewArgumentsException;
 import function.ArgumentValidator.TooManyArgumentsException;
@@ -20,8 +9,18 @@ import function.builtin.EVAL.UndefinedSymbolException;
 import function.builtin.EVAL.UnmatchedAtSignException;
 import function.builtin.EVAL.UnmatchedCommaException;
 import function.builtin.special.RECUR.RecurNotInTailPositionException;
+import org.junit.Test;
 import testutil.SymbolAndFunctionCleaner;
 
+import static function.builtin.EVAL.lookupSymbol;
+import static org.junit.Assert.assertNull;
+import static org.junit.Assert.fail;
+import static sexpression.Nil.NIL;
+import static testutil.TestUtilities.assertIsErrorWithMessage;
+import static testutil.TestUtilities.assertSExpressionsMatch;
+import static testutil.TestUtilities.evaluateString;
+import static testutil.TestUtilities.parseString;
+
 public class EVALTest extends SymbolAndFunctionCleaner {
 
     @Test

src/test/function/builtin/EXITTest.java

@@ -1,17 +1,16 @@
 package function.builtin;
 
-import static org.junit.Assert.assertFalse;
-import static org.junit.Assert.assertTrue;
-import static testutil.TestUtilities.evaluateString;
+import environment.RuntimeEnvironment;
+import function.ArgumentValidator.TooManyArgumentsException;
+import org.junit.Test;
+import testutil.SymbolAndFunctionCleaner;
 
 import java.util.HashSet;
 import java.util.Set;
 
-import org.junit.Test;
-
-import environment.RuntimeEnvironment;
-import function.ArgumentValidator.TooManyArgumentsException;
-import testutil.SymbolAndFunctionCleaner;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+import static testutil.TestUtilities.evaluateString;
 
 public class EXITTest extends SymbolAndFunctionCleaner {
 

src/test/function/builtin/FUNCALLTest.java

@@ -1,14 +1,13 @@
 package function.builtin;
 
+import function.ArgumentValidator.TooFewArgumentsException;
+import org.junit.Test;
+import testutil.SymbolAndFunctionCleaner;
+
 import static testutil.TestUtilities.assertSExpressionsMatch;
 import static testutil.TestUtilities.evaluateString;
 import static testutil.TestUtilities.parseString;
 
-import org.junit.Test;
-
-import function.ArgumentValidator.TooFewArgumentsException;
-import testutil.SymbolAndFunctionCleaner;
-
 public class FUNCALLTest extends SymbolAndFunctionCleaner {
 
     @Test

src/test/function/builtin/GENSYMTest.java

@@ -1,17 +1,16 @@
 package function.builtin;
 
+import function.ArgumentValidator.TooManyArgumentsException;
+import org.junit.Test;
+import testutil.SymbolAndFunctionCleaner;
+import token.TokenFactory.BadCharacterException;
+
 import static function.builtin.GENSYM.GENSYM_PREFIX;
 import static testutil.TestUtilities.assertSExpressionsDoNotMatch;
 import static testutil.TestUtilities.assertSExpressionsMatch;
 import static testutil.TestUtilities.evaluateString;
 import static testutil.TypeAssertions.assertSymbol;
 
-import org.junit.Test;
-
-import function.ArgumentValidator.TooManyArgumentsException;
-import testutil.SymbolAndFunctionCleaner;
-import token.TokenFactory.BadCharacterException;
-
 public class GENSYMTest extends SymbolAndFunctionCleaner {
 
     @Test

src/test/function/builtin/LOADTest.java

@@ -1,22 +1,21 @@
 package function.builtin;
 
-import static org.junit.Assert.assertTrue;
-import static testutil.TestUtilities.evaluateString;
-import static testutil.TypeAssertions.assertNil;
-import static testutil.TypeAssertions.assertT;
-
-import java.io.ByteArrayOutputStream;
-import java.io.PrintStream;
-
-import org.junit.Test;
-
 import environment.RuntimeEnvironment;
 import error.ErrorManager;
 import function.ArgumentValidator.BadArgumentTypeException;
 import function.ArgumentValidator.TooFewArgumentsException;
 import function.ArgumentValidator.TooManyArgumentsException;
+import org.junit.Test;
 import testutil.SymbolAndFunctionCleaner;
 
+import java.io.ByteArrayOutputStream;
+import java.io.PrintStream;
+
+import static org.junit.Assert.assertTrue;
+import static testutil.TestUtilities.evaluateString;
+import static testutil.TypeAssertions.assertNil;
+import static testutil.TypeAssertions.assertT;
+
 public class LOADTest extends SymbolAndFunctionCleaner {
 
     private ByteArrayOutputStream outputStream;

src/test/function/builtin/PRINTTest.java

@@ -1,19 +1,18 @@
 package function.builtin;
 
-import static java.text.MessageFormat.format;
-import static org.junit.Assert.assertEquals;
-import static testutil.TestUtilities.evaluateString;
-
-import java.io.ByteArrayOutputStream;
-import java.io.PrintStream;
-
-import org.junit.Test;
-
 import environment.RuntimeEnvironment;
 import function.ArgumentValidator.TooFewArgumentsException;
 import function.ArgumentValidator.TooManyArgumentsException;
+import org.junit.Test;
 import testutil.SymbolAndFunctionCleaner;
 
+import java.io.ByteArrayOutputStream;
+import java.io.PrintStream;
+
+import static java.text.MessageFormat.format;
+import static org.junit.Assert.assertEquals;
+import static testutil.TestUtilities.evaluateString;
+
 public class PRINTTest extends SymbolAndFunctionCleaner {
 
     private RuntimeEnvironment environment;

src/test/function/builtin/SETTest.java

@@ -1,19 +1,18 @@
 package function.builtin;
 
-import static org.junit.Assert.assertNull;
-import static testutil.TestUtilities.assertSExpressionsMatch;
-import static testutil.TestUtilities.evaluateString;
-
-import org.junit.Test;
-
 import function.ArgumentValidator.BadArgumentTypeException;
 import function.ArgumentValidator.TooFewArgumentsException;
 import function.ArgumentValidator.TooManyArgumentsException;
 import function.builtin.EVAL.UndefinedSymbolException;
+import org.junit.Test;
 import sexpression.LispNumber;
 import table.SymbolTable;
 import testutil.SymbolAndFunctionCleaner;
 
+import static org.junit.Assert.assertNull;
+import static testutil.TestUtilities.assertSExpressionsMatch;
+import static testutil.TestUtilities.evaluateString;
+
 public class SETTest extends SymbolAndFunctionCleaner {
 
     @Test

src/test/function/builtin/SYMBOLSTest.java

@@ -1,13 +1,12 @@
 package function.builtin;
 
+import function.ArgumentValidator.TooManyArgumentsException;
+import org.junit.Test;
+import testutil.SymbolAndFunctionCleaner;
+
 import static testutil.TestUtilities.assertSExpressionsMatch;
 import static testutil.TestUtilities.evaluateString;
 
-import org.junit.Test;
-
-import function.ArgumentValidator.TooManyArgumentsException;
-import testutil.SymbolAndFunctionCleaner;
-
 public class SYMBOLSTest extends SymbolAndFunctionCleaner {
 
     @Test

src/test/function/builtin/SYMBOL_FUNCTIONTest.java

@@ -1,5 +1,12 @@
 package function.builtin;
 
+import function.ArgumentValidator.BadArgumentTypeException;
+import function.ArgumentValidator.TooFewArgumentsException;
+import function.ArgumentValidator.TooManyArgumentsException;
+import function.builtin.SYMBOL_FUNCTION.UndefinedSymbolFunctionException;
+import org.junit.Test;
+import testutil.SymbolAndFunctionCleaner;
+
 import static error.ErrorManager.Severity.ERROR;
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertNotNull;
@@ -7,14 +14,6 @@ import static org.junit.Assert.assertTrue;
 import static sexpression.Nil.NIL;
 import static testutil.TestUtilities.evaluateString;
 
-import org.junit.Test;
-
-import function.ArgumentValidator.BadArgumentTypeException;
-import function.ArgumentValidator.TooFewArgumentsException;
-import function.ArgumentValidator.TooManyArgumentsException;
-import function.builtin.SYMBOL_FUNCTION.UndefinedSymbolFunctionException;
-import testutil.SymbolAndFunctionCleaner;
-
 public class SYMBOL_FUNCTIONTest extends SymbolAndFunctionCleaner {
 
     @Test

src/test/function/builtin/cons/APPENDTest.java

@@ -1,17 +1,16 @@
 package function.builtin.cons;
 
-import static testutil.TestUtilities.assertSExpressionsMatch;
-import static testutil.TestUtilities.evaluateString;
-import static testutil.TestUtilities.parseString;
-
-import org.junit.Test;
-
 import function.ArgumentValidator.BadArgumentTypeException;
 import function.ArgumentValidator.DottedArgumentListException;
 import function.ArgumentValidator.TooFewArgumentsException;
 import function.ArgumentValidator.TooManyArgumentsException;
+import org.junit.Test;
 import testutil.SymbolAndFunctionCleaner;
 
+import static testutil.TestUtilities.assertSExpressionsMatch;
+import static testutil.TestUtilities.evaluateString;
+import static testutil.TestUtilities.parseString;
+
 public class APPENDTest extends SymbolAndFunctionCleaner {
 
     @Test