FEAT: Add support for additional types (#3)

* FEAT: Add support for additional types

* Remove unused code

* Added comments for new methods

* Addressed comments

* Added release notes

* Refactored CHANGELOG.md

Author: varunu28

CHANGELOG.md

@@ -6,6 +6,9 @@ All notable changes to **ValueStringBuilder** will be documented in this file. T
 
 ## [Unreleased]
 
+### Added 
+ - The string builder can now be used to append integers, boolean & collection of strings. `sb.AppendInt(1).AppendBool(true).AppendList([]string{"a", "b", "c"})`
+
 ## [0.7.0] - 2023-08-21
 
 \### Added

stringbuilder.go

@@ -1,6 +1,9 @@
 package Text
 
-import "fmt"
+import (
+	"fmt"
+	"strconv"
+)
 
 type StringBuilder struct {
 	data     []rune
@@ -23,14 +26,10 @@ func NewStringBuilderFromString(text string) *StringBuilder {
 
 // Appends a text to the StringBuilder instance
 func (s *StringBuilder) Append(text string) *StringBuilder {
+	s.resize(text)
 	textRunes := []rune(text)
-	newLen := s.position + len(textRunes)
-	if newLen > cap(s.data) {
-		s.grow(newLen)
-	}
-
 	copy(s.data[s.position:], textRunes)
-	s.position = newLen
+	s.position = s.position + len(textRunes)
 
 	return s
 }
@@ -49,13 +48,42 @@ func (s *StringBuilder) AppendRune(char rune) *StringBuilder {
 	if newLen > cap(s.data) {
 		s.grow(newLen)
 	}
-
 	s.data[s.position] = char
 	s.position++
 
 	return s
 }
 
+// Appends a single integer to the StringBuilder instance
+func (s *StringBuilder) AppendInt(integer int) *StringBuilder {
+	return s.Append(strconv.Itoa(integer))
+}
+
+// Appends a single boolean to the StringBuilder instance
+func (s *StringBuilder) AppendBool(flag bool) *StringBuilder {
+	return s.Append(strconv.FormatBool(flag))
+}
+
+// Appends a list of strings to the StringBuilder instance
+func (s *StringBuilder) AppendList(words []string) *StringBuilder {
+	s.resize(words...)
+	for _, word := range words {
+		s = s.Append(word)
+	}
+	return s
+}
+
+func (s *StringBuilder) resize(words ...string) {
+	allWordLength := 0
+	for _, word := range words {
+		allWordLength += len(word)
+	}
+	newLen := s.position + allWordLength
+	if newLen > cap(s.data) {
+		s.grow(newLen)
+	}
+}
+
 // Returns the current length of the represented string
 func (s *StringBuilder) Len() int {
 	return s.position

stringbuilder_test.go

@@ -26,6 +26,27 @@ func TestAppend(t *testing.T) {
 	}
 }
 
+func TestAppendMultipleTypes(t *testing.T) {
+	tests := []struct {
+		stringInput     string
+		intInput        int
+		booleanInput    bool
+		multipleStrings []string
+		want            string
+	}{
+		{"hello", 123, false, []string{"a", "b", "c"}, "hello123falseabc"},
+		{"hello", 123, true, []string{"a", "b", "c"}, "hello123trueabc"},
+	}
+	for _, tt := range tests {
+		s := &StringBuilder{}
+		s.Append(tt.stringInput).AppendInt(tt.intInput).AppendBool(tt.booleanInput).AppendList(tt.multipleStrings)
+
+		if got := s.ToString(); got != tt.want {
+			t.Errorf("StringBuilder.Append Multiple types = %v, want %v", got, tt.want)
+		}
+	}
+}
+
 func TestLen(t *testing.T) {
 	tests := []struct {
 		name  string