1 files changed, 70 insertions, 0 deletions
diff --git a/symbol.py b/symbol.py
new file mode 100644
index 0000000..c8ca424
--- /dev/null
+++ b/symbol.py
@@ -0,0 +1,70 @@
+from enum import Enum
+from dataclasses import dataclass
+from typing import Any
+
+reservadas = [
+    'BOOLEAN',
+    'BREAK',
+    'CHAR',
+    'DOUBLE',
+    'ELSE',
+    'FOR'
+    'IDENT',
+    'IF',
+    'INT',
+    'PRINT',
+    'READ',
+    'RETURN',
+    'STRING',
+    'VOID',
+    'WHILE'
+]
+
+literales = [
+    'BOOLEAN_LIT',
+    'CHAR_LIT',
+    'DOUBLE_LIT',
+    'INT_LIT',
+    'STRING_LIT'
+]
+
+tokens = reservadas + literales + [
+    '{', '}', '(', ')', ',', '\'',
+    '"', ';', '=', '*', '/', '+',
+    '-', '>', '<', '>=', '<=', '&&',
+    '||', '==', '!=', '++', '--', '//'
+]
+
+@dataclass
+class LexToken:
+    tipo: str
+    nombre: str
+    valor: Any
+    numlinea: int
+
+    def __str__(self):
+        return "LexToken(%s,%s,%s,%i)" % (
+            self.tipo, self.nombre, self.valor, self.numlinea
+        )
+
+class TablaLex:
+    def __init__(self):
+        self.tabla = []
+
+    def insertar(self, tok: LexToken):
+        self.tabla.append(tok)
+
+    def buscar(self, nombre: str):
+        return [t for t in self.tabla if t.nombre == nombre][0]
+
+    def actualizar(self, nombre: str, tok: LexToken):
+        for i, t in enumerate(self.tabla):
+            if t.nombre == nombre:
+                self.tabla[i] = tok
+                return
+
+    def __str__(self):
+        output = ""
+        for t in self.tabla:
+            output += str(t) + "\n"
+        return output