2 files changed, 66 insertions, 0 deletions
diff --git a/internal/token/linked_token_list.go b/internal/token/linked_token_list.go
new file mode 100644
index 0000000..5fe42a9
--- /dev/null
+++ b/internal/token/linked_token_list.go
@@ -0,0 +1,36 @@
+package token
+
+type LinkedTokenList struct {
+	head, tail *Token
+}
+
+func (lts *LinkedTokenList) GetHead() *Token {
+	return lts.head
+}
+
+func (lts *LinkedTokenList) GetTail() *Token {
+	return lts.tail
+}
+
+func (lts *LinkedTokenList) AddToken(content string) {
+	newToken := &Token{
+		content: content,
+		prev:    nil,
+		next:    nil,
+	}
+
+	if lts.head == nil {
+		lts.head = newToken
+		lts.tail = newToken
+	} else {
+		newToken.SetPreviousToken(lts.tail)
+		lts.tail.SetNextToken(newToken)
+		lts.tail = newToken
+	}
+}
+
+func SliceToLinkedTokenSlice(slice []string, tokenSlice *LinkedTokenList) {
+	for _, item := range slice {
+		tokenSlice.AddToken(item)
+	}
+}
diff --git a/internal/token/token.go b/internal/token/token.go
new file mode 100644
index 0000000..c4dffd8
--- /dev/null
+++ b/internal/token/token.go
@@ -0,0 +1,30 @@
+package token
+
+type Token struct {
+	content    string
+	prev, next *Token
+}
+
+func (t *Token) GetContent() string {
+	return t.content
+}
+
+func (t *Token) SetContent(content string) {
+	t.content = content
+}
+
+func (t *Token) GetPreviousToken() *Token {
+	return t.prev
+}
+
+func (t *Token) SetPreviousToken(newToken *Token) {
+	t.prev = newToken
+}
+
+func (t *Token) GetNextToken() *Token {
+	return t.next
+}
+
+func (t *Token) SetNextToken(newToken *Token) {
+	t.next = newToken
+}