Update name change.

README.md

@@ -0,0 +1,43 @@
+## Monna Programming Language
+This project is a result of learning the innards of compilers. Among other compiler books that I learned from, this was the most influential, especially in making this project: [Writing an Interpreter In Go](https://interpreterbook.com/).
+
+![Demo of Monna working](/doc/demo.png)
+
+### Using
+To use the Monna interpreter, simply run `go run main.go` in the project directory.To get an executable, run `go build` in the project directory.
+
+### Features
+#### Variables:
+	let x = 5;
+
+#### Return Statements:
+	return 5; 
+	return false;
+
+#### Expressions: 
+	if (x < y) { x }
+
+	if (x > y) { y } else { x }
+
+#### Functions: 
+	fn(x, y) { x + y; }
+
+#### String Literals:
+	"Hello World"
+
+#### Built-in Functions:
+- **len()**: Returns the number of characters in a string.
+```
+len("Dexter's Laboratory");
+19
+```
+- **puts()**: Prints the given arguments to STDOUT. It return a null. It only cares about printing not returning a value.
+```
+puts("Sugar, spice, and everything nice!");
+Sugar, spice, and everything nice!
+
+```
+
+#### Error Handling:
+The Monna programming language also responds accordingly to errors:
+![Error Handling](/doc/error_handling.png)

ast/ast.go

@@ -2,7 +2,7 @@ package ast
 
 import (
 	"bytes"
-	"monkey/token"
+	"monna/token"
 	"strings"
 )
 

ast/ast_test.go

@@ -1,7 +1,7 @@
 package ast
 
 import (
-	"monkey/token"
+	"monna/token"
 	"testing"
 )
 

evaluator/builtins.go

@@ -2,7 +2,7 @@ package evaluator
 
 import(
 	"fmt"
-	"monkey/object"
+	"monna/object"
 )
 
 var builtins = map[string]*object.Builtin{

evaluator/evaluator.go

@@ -2,8 +2,8 @@ package evaluator
 
 import (
 	"fmt"
-	"monkey/ast"
-	"monkey/object"
+	"monna/ast"
+	"monna/object"
 )
 
 var (

evaluator/evaluator_test.go

@@ -1,9 +1,9 @@
 package evaluator
 
 import (
-	"monkey/lexer"
-	"monkey/object"
-	"monkey/parser"
+	"monna/lexer"
+	"monna/object"
+	"monna/parser"
 	"testing"
 )
 

go.mod

@@ -1,3 +1,3 @@
-module monkey
+module monna
 
 go 1.18

lexer/lexer.go

@@ -1,6 +1,6 @@
 package lexer
 
-import "monkey/token"
+import "monna/token"
 
 type Lexer struct {
 	input         string

lexer/lexer_test.go

@@ -3,7 +3,7 @@ package lexer
 import (
 	"testing"
 
-	"monkey/token"
+	"monna/token"
 )
 
 func TestNextToken(t *testing.T) {

main.go

@@ -11,10 +11,10 @@ import (
 	"fmt"
 	"os"
 
-	"monkey/repl"
+	"monna/repl"
 )
 
 func main() {
-	fmt.Printf("Welcome to the Monk programming language!\n")
+	fmt.Printf("Hello human, type some commands: \n")
 	repl.Start(os.Stdin, os.Stdout)
 }

object/environment.go

@@ -20,7 +20,7 @@ func NewEnvironment() *Environment {
 /*
    Enclosing Environments
 
-   Here is a problem case, lets say in monkey I would want to type this:
+   Here is a problem case, lets say in monna I would want to type this:
 
    ```
    let i = 5;
@@ -32,7 +32,7 @@ func NewEnvironment() *Environment {
    puts(i);
    ```
 
-  The ideal result of the above code in the monkey programming language is for 10 and 5 to be the outputs respectively.
+  The ideal result of the above code in the monna programming language is for 10 and 5 to be the outputs respectively.
   In a situation where enclosed environment does not exists, both outputs will be 10 because the current value of i
   would be overwritten. The ideal situation would be to preserve the previous binding to 'i' while also making a a new
   one.

object/object.go

@@ -3,7 +3,7 @@ package object
 import (
 	"bytes"
 	"fmt"
-	"monkey/ast"
+	"monna/ast"
 	"strings"
 )
 

parser/parser.go

@@ -2,9 +2,9 @@ package parser
 
 import (
 	"fmt"
-	"monkey/ast"
-	"monkey/lexer"
-	"monkey/token"
+	"monna/ast"
+	"monna/lexer"
+	"monna/token"
 	"strconv"
 )
 

parser/parser_test.go

@@ -3,8 +3,8 @@ package parser
 import (
 	"fmt"
 
-	"monkey/ast"
-	"monkey/lexer"
+	"monna/ast"
+	"monna/lexer"
 	"testing"
 )
 

repl/repl.go

@@ -4,10 +4,10 @@ import (
 	"bufio"
 	"fmt"
 	"io"
-	"monkey/evaluator"
-	"monkey/lexer"
-	"monkey/object"
-	"monkey/parser"
+	"monna/evaluator"
+	"monna/lexer"
+	"monna/object"
+	"monna/parser"
 )
 
 const MONKEY_FACE = `            __,__