feat: added more features in strings.

core/builtin_classes/string_object.py

@@ -68,6 +68,80 @@ def count(ctx):
         string = ctx.symbol_table.get("string")
         if len(string.value) == 0:
             return res.failure(
-                RTError(string.pos_start, string.pos_end, "Cannot count an empty string", string.context)
+                RTError(string.pos_start, string.pos_end,
+                        "Cannot count an empty string", string.context)
             )
         return res.success(Number(self.value.count(string.value)))
+
+    @args(["string", "value"], [String(""), String("")])
+    @method
+    def replace(ctx):
+        res = RTResult()
+        self = ctx.symbol_table.get("this")
+        string = ctx.symbol_table.get("string")
+        value = ctx.symbol_table.get("value")
+        return res.success(String(self.value.replace(string.value, value.value)))
+
+    @args(["string"], [String("")])
+    @method
+    def find(ctx):
+        res = RTResult()
+        self = ctx.symbol_table.get("this")
+        string = ctx.symbol_table.get("string")
+        return res.success(Number(self.value.find(string.value)))
+
+    @args(["string"], [String("")])
+    @method
+    def startswith(ctx):
+        res = RTResult()
+        self = ctx.symbol_table.get("this")
+        string = ctx.symbol_table.get("string")
+        return res.success(Boolean(self.value.startswith(string.value)))
+
+    @args(["string"], [String("")])
+    @method
+    def endswith(ctx):
+        res = RTResult()
+        self = ctx.symbol_table.get("this")
+        string = ctx.symbol_table.get("string")
+        return res.success(Boolean(self.value.endswith(string.value)))
+
+    @args(["string"], [String("")])
+    @method
+    def split(ctx):
+        res = RTResult()
+        self = ctx.symbol_table.get("this")
+        string = ctx.symbol_table.get("string")
+        return res.success(Array([String(i) for i in self.value.split(string.value)]))
+
+    @args(["string"], [String("")])
+    @method
+    def join(ctx):
+        res = RTResult()
+        self = ctx.symbol_table.get("this")
+        string = ctx.symbol_table.get("string")
+        return res.success(String(string.value.join(self.value)))
+
+    @args(["string"], [String("")])
+    @method
+    def strip(ctx):
+        res = RTResult()
+        self = ctx.symbol_table.get("this")
+        string = ctx.symbol_table.get("string")
+        return res.success(String(self.value.strip(string.value)))
+
+    @args(["string"], [String("")])
+    @method
+    def lstrip(ctx):
+        res = RTResult()
+        self = ctx.symbol_table.get("this")
+        string = ctx.symbol_table.get("string")
+        return res.success(String(self.value.lstrip(string.value)))
+
+    @args(["string"], [String("")])
+    @method
+    def rstrip(ctx):
+        res = RTResult()
+        self = ctx.symbol_table.get("this")
+        string = ctx.symbol_table.get("string")
+        return res.success(String(self.value.rstrip(string.value)))