add: logger + error handling let variables

Logger/logger.go

@@ -0,0 +1,17 @@
+package Logger
+
+import (
+	log "github.com/sirupsen/logrus"
+)
+
+func Fatal(nbLine int, mes string) {
+	log.WithFields(log.Fields{
+		"line": nbLine,
+	}).Fatal(mes)
+}
+
+func Info(nbLine int, mes string) {
+	log.WithFields(log.Fields{
+		"line": nbLine,
+	}).Fatal(mes)
+}

Token/handler.go

@@ -2,13 +2,14 @@ package Token
 
 import (
 	"fmt"
+	"leango/Logger"
 	"leango/Variable"
 	"slices"
+	"strconv"
 )
 
 var availableTokens = []string{"let", "const", "lean"}
-var availableMutableVariables = make(map[string]Variable.Variable)
-var availableNonMutableVariables = make(map[string]Variable.Variable)
+var availableVariables = make(map[string]Variable.Variable)
 
 func TokenHandler() map[string]func([]string, int) {
 	var TokenMapFunction = make(map[string]func([]string, int))
@@ -19,20 +20,32 @@ func TokenHandler() map[string]func([]string, int) {
 	return TokenMapFunction
 }
 
-func isLet(rows []string, line int) {
-	index := slices.Index(rows, "=")
+func isLet(rows []string, nbLine int) {
+	indexEqualSign := slices.Index(rows, "=")
+	lenRows := len(rows)
+	var tokenValue []string
 
-	if len(rows) == 1 {
-		panic(fmt.Sprintf("Nothing found after the declaration of let at line %d", line))
+	if lenRows < 2 {
+		Logger.Fatal(nbLine, "Nothing found after the declaration of let")
 	}
-
-	if index == -1 {
-		panic(fmt.Sprintf("A value was not set for %s", rows[1]))
+	fmt.Println(indexEqualSign)
+	if indexEqualSign == 2 && lenRows == 3 {
+		Logger.Fatal(nbLine, fmt.Sprintf("A value was not set for %s", rows[1]))
+	}
+	if _, varNameExists := availableVariables[rows[1]]; varNameExists {
+		Logger.Fatal(nbLine, fmt.Sprintf("A variable aleady exists with the same name %s: line %d", rows[1], nbLine))
+	}
+	if indexEqualSign == 2 {
+		tokenValue = rows[indexEqualSign+1:]
+
+		if intValue, err := strconv.Atoi(tokenValue[0]); err == nil {
+			availableVariables[rows[1]] = Variable.Variable{IsNumeric: true, Value: intValue}
+		} else {
+			availableVariables[rows[1]] = Variable.Variable{IsNumeric: true, Value: intValue}
+		}
+	} else {
+		availableVariables[rows[1]] = Variable.Variable{Value: nil}
 	}
-
-	value := rows[index+1:]
-	fmt.Println(value)
-	fmt.Println("Is a let variable and the value is = ")
 }
 
 func isConst(rows []string, line int) {

Variable/variable.go

@@ -1,8 +1,8 @@
 package Variable
 
 type Variable struct {
-	isNumeric bool
-	isString  bool
-	isArray   bool
-	value     any
+	IsNumeric bool
+	IsString  bool
+	IsMutable bool
+	Value     any
 }

examples/foo.leango

@@ -1,4 +1,4 @@
-let foo = 1
+let foo
 let bar = foo + 1
 const john = 90
 

examples/let/errors/no_value_after_equal_sing.leango

@@ -0,0 +1 @@
+let foo =

examples/let/errors/same_name_variables.leango

@@ -0,0 +1,2 @@
+let foo
+let foo

go.mod

@@ -1,3 +1,8 @@
 module leango
 
 go 1.22.0
+
+require (
+	github.com/sirupsen/logrus v1.9.3 // indirect
+	golang.org/x/sys v0.18.0 // indirect
+)

go.sum

@@ -0,0 +1,12 @@
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/sirupsen/logrus v1.9.3 h1:dueUQJ1C2q9oE3F7wvmSGAaVtTmUizReu6fjN8uqzbQ=
+github.com/sirupsen/logrus v1.9.3/go.mod h1:naHLuLoDiP4jHNo9R0sCBMtWGeIprob74mVsIT4qYEQ=
+github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+golang.org/x/sys v0.0.0-20220715151400-c0bba94af5f8/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.18.0 h1:DBdB3niSjOA/O0blCZBqDefyWNYveAYMNF1Wum0DYQ4=
+golang.org/x/sys v0.18.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

main.go

@@ -2,6 +2,7 @@ package main
 
 import (
 	"fmt"
+	logger "github.com/sirupsen/logrus"
 	"leango/Token"
 	"log"
 	"os"
@@ -42,5 +43,8 @@ func main() {
 	if len(os.Args) != 2 {
 		log.Default().Fatal("Not enough arguments\n./leango [filepath]")
 	}
+	if !(strings.HasSuffix(os.Args[1], ".leango")) {
+		logger.WithFields(logger.Fields{}).Fatal(fmt.Sprintf("Incorrect file extension [%s]", os.Args[1]))
+	}
 	parseFile(os.Args[1])
 }