⚡ optimize code

src/nasal_lexer.cpp

@@ -11,11 +11,11 @@ bool lexer::skip(char c) {
 }
 
 bool lexer::is_id(char c) {
-    return (c=='_') || ('a'<=c && c<='z') || ('A'<=c && c<='Z') || (c<0);   
+    return (c=='_') || std::isalpha(c) || (c<0);   
 }
 
 bool lexer::is_hex(char c) {
-    return ('0'<=c && c<='9') || ('a'<=c && c<='f') || ('A'<=c && c<='F');
+    return std::isdigit(c) || ('a'<=c && c<='f') || ('A'<=c && c<='F');
 }
 
 bool lexer::is_oct(char c) {
@@ -23,7 +23,7 @@ bool lexer::is_oct(char c) {
 }
 
 bool lexer::is_dec(char c) {
-    return '0'<=c && c<='9';
+    return std::isdigit(c);
 }
 
 bool lexer::is_str(char c) {

test/httptest.nas

@@ -63,7 +63,10 @@ var highlight_style="
         font-size: small;
         text-align: left;
     }
-    code.key{color: #f895e7;}
+    code.key {
+        color: #f895e7;
+        font-weight: bold;
+    }
     code.id {color: #8abef0;}
     code.opr {color: #f895e7;}
     code.brace {color: #eafd70;}