comments, skip empty semis in blocks

lang/src/ast.asm

@@ -658,6 +658,13 @@ parse_block:
     call peek_expect_token
     test rax, rax
     jnz .done
+
+    ; skip semicolons
+    mov dil, TOKEN_SEMI
+    call expect_token
+    test rax, rax
+    jnz .loop
+
     mov rdi, [rsp + 56]         ; Ast
     call parse_statement
     lea rdi, [rsp + 8]          ; vec

lang/src/tokeniser.asm

@@ -547,7 +547,8 @@ expect_token:
     add rsp, 0x30
     pop rbp
     ret
-
+    
+;; Returns the next token if it matches the expected token, else panics
 ;; dil: expected token
 unwrap_token:
     push rbp
@@ -561,6 +562,7 @@ unwrap_token:
     call panic
 
 ;; returns 0 if token not found, else returns lexeme (ptr, len)
+;; doesn't advance the cursor
 ;; dil: expected token
 peek_expect_token:
     push rbp
@@ -573,6 +575,7 @@ peek_expect_token:
     pop rbp
     ret
 
+;; returns the next lexeme without advancing the cursor
 ;; rdi: out-struct pointer
 peek_lexeme:
     push rbp