feat: add http response codes

Signed-off-by: kjuulh <contact@kjuulh.io>

src/grammar.json

@@ -23,6 +23,19 @@
         {
           "type": "SYMBOL",
           "name": "request_declaration"
+        },
+        {
+          "type": "SYMBOL",
+          "name": "header_declaration"
+        },
+        {
+          "type": "ALIAS",
+          "content": {
+            "type": "SYMBOL",
+            "name": "http_response_declaration"
+          },
+          "named": true,
+          "value": "response"
         }
       ]
     },
@@ -38,11 +51,53 @@
           "name": "url",
           "content": {
             "type": "SYMBOL",
-            "name": "_url"
+            "name": "url"
           }
         }
       ]
     },
+    "header_declaration": {
+      "type": "SEQ",
+      "members": [
+        {
+          "type": "FIELD",
+          "name": "header_name",
+          "content": {
+            "type": "SYMBOL",
+            "name": "header_name"
+          }
+        },
+        {
+          "type": "STRING",
+          "value": ":"
+        },
+        {
+          "type": "FIELD",
+          "name": "header_value",
+          "content": {
+            "type": "SYMBOL",
+            "name": "header_value"
+          }
+        }
+      ]
+    },
+    "http_response_declaration": {
+      "type": "SEQ",
+      "members": [
+        {
+          "type": "SYMBOL",
+          "name": "scheme_literal"
+        },
+        {
+          "type": "SYMBOL",
+          "name": "_space_literal"
+        },
+        {
+          "type": "SYMBOL",
+          "name": "status_code_pattern"
+        }
+      ]
+    },
     "_literal": {
       "type": "CHOICE",
       "members": [
@@ -117,7 +172,27 @@
         }
       ]
     },
-    "_url": {
+    "scheme_literal": {
+      "type": "STRING",
+      "value": "HTTP"
+    },
+    "_space_literal": {
+      "type": "STRING",
+      "value": " "
+    },
+    "status_code_pattern": {
+      "type": "PATTERN",
+      "value": "[\\d]{3}"
+    },
+    "header_name": {
+      "type": "PATTERN",
+      "value": "[a-zA-Z-_0-9]+"
+    },
+    "header_value": {
+      "type": "PATTERN",
+      "value": "[a-zA-Z-_0-9\\s:;\\.,\\\\\\/\\\"\\'\\?\\!\\(\\)\\{\\}\\[\\]@<>=\\-\\+\\*\\#\\$\\&`|~^%]+"
+    },
+    "url": {
       "type": "PATTERN",
       "value": "\\S+"
     }

src/node-types.json

@@ -1,8 +1,45 @@
 [
+  {
+    "type": "header_declaration",
+    "named": true,
+    "fields": {
+      "header_name": {
+        "multiple": false,
+        "required": true,
+        "types": [
+          {
+            "type": "header_name",
+            "named": true
+          }
+        ]
+      },
+      "header_value": {
+        "multiple": false,
+        "required": true,
+        "types": [
+          {
+            "type": "header_value",
+            "named": true
+          }
+        ]
+      }
+    }
+  },
   {
     "type": "request_declaration",
     "named": true,
-    "fields": {},
+    "fields": {
+      "url": {
+        "multiple": false,
+        "required": true,
+        "types": [
+          {
+            "type": "url",
+            "named": true
+          }
+        ]
+      }
+    },
     "children": {
       "multiple": false,
       "required": true,
@@ -19,6 +56,25 @@
     "named": true,
     "fields": {}
   },
+  {
+    "type": "response",
+    "named": true,
+    "fields": {},
+    "children": {
+      "multiple": true,
+      "required": true,
+      "types": [
+        {
+          "type": "scheme_literal",
+          "named": true
+        },
+        {
+          "type": "status_code_pattern",
+          "named": true
+        }
+      ]
+    }
+  },
   {
     "type": "source_file",
     "named": true,
@@ -27,13 +83,25 @@
       "multiple": true,
       "required": false,
       "types": [
+        {
+          "type": "header_declaration",
+          "named": true
+        },
         {
           "type": "request_declaration",
           "named": true
+        },
+        {
+          "type": "response",
+          "named": true
         }
       ]
     }
   },
+  {
+    "type": ":",
+    "named": false
+  },
   {
     "type": "CONNECT",
     "named": false
@@ -93,5 +161,25 @@
   {
     "type": "VIEW",
     "named": false
+  },
+  {
+    "type": "header_name",
+    "named": true
+  },
+  {
+    "type": "header_value",
+    "named": true
+  },
+  {
+    "type": "scheme_literal",
+    "named": true
+  },
+  {
+    "type": "status_code_pattern",
+    "named": true
+  },
+  {
+    "type": "url",
+    "named": true
   }
 ]