1 files changed, 29 insertions, 6 deletions
diff --git a/chapter14/docs/14-grammar.md b/chapter14/docs/14-grammar.md
index 65611618..4534684d 100644
--- a/chapter14/docs/14-grammar.md
+++ b/chapter14/docs/14-grammar.md
@@ -1,4 +1,4 @@
-# Grammar for Chapter 13
+# Grammar for Chapter 14
 
 ```antlrv4
 grammar SimpleLanguage;
@@ -20,8 +20,23 @@ statement
     | metaStatement
     ;
 
+type
+    : 'int'
+    | 'i8'
+    | 'i16'
+    | 'i32'
+    | 'i64'
+    | 'u8'
+    | 'u16'
+    | 'u32'
+    | 'flt'
+    | 'f32'
+    | 'f64'
+    | 'bool'
+    ;
+    
 field
-    : 'int' IDENTIFIER ';'
+    : type IDENTIFIER ';'
     ;
 
 fields
@@ -66,7 +81,7 @@ structName
     ;
 
 declStatement
-    : 'int' IDENTIFIER '=' expression ';'
+    : type IDENTIFIER '=' expression ';'
     | structName IDENTIFIER ('?')? '=' expression ';'
     ;
 
@@ -75,19 +90,27 @@ returnStatement
     ;
 
 expression
-    : comparisonExpression
+    : bitWiseExpression
     ;
 
+bitWiseExpression
+    : comparisonExpression ( '&' | '|' | '^' ) comparisonExpression)*
+    ;
+    
 comparisonExpression
-    : additiveExpression (('==' | '!='| '>'| '<'| '>='| '<=') additiveExpression)*
+    : shiftExpression (('==' | '!='| '>'| '<'| '>='| '<=') shiftExpression)*
     ;
 
+shiftExpression
+    : additiveExpression ( '<<' | '>>>' | '>>' ) additiveExpression)*
+    ;
+    
 additiveExpression
     : multiplicativeExpression (('+' | '-') multiplicativeExpression)*
     ;
 
 multiplicativeExpression
-    : unaryExpression (('*' | '/') unaryExpression)*
+    : unaryExpression (('*' | '|') unaryExpression)*
     ;
 
 unaryExpression