fix: consider longer alternative for null (#740)

* fix: consider longer alt for null

* fix: add change set

Author: marufrasully

.changeset/twelve-onions-drum.md

@@ -0,0 +1,7 @@
+---
+"@ui5-language-assistant/binding-parser": patch
+"vscode-ui5-language-assistant": patch
+"@ui5-language-assistant/vscode-ui5-language-assistant-bas-ext": patch
+---
+
+fix: consider longer alt for null

packages/binding-parser/src/lexer/token.ts

@@ -86,7 +86,11 @@ const numberValue = createToken({
   pattern: /-?(?:0|[1-9]\d*)(?:\.\d+)?(?:[eE][+-]?\d+)?/,
 });
 
-const nullValue = createToken({ name: NULL_VALUE, pattern: /null/ });
+const nullValue = createToken({
+  name: NULL_VALUE,
+  pattern: /null/,
+  longer_alt: key,
+});
 
 const comma = createToken({
   name: COMMA,

packages/binding-parser/test/unit/data/issues/735/ast.json

@@ -0,0 +1,54 @@
+{
+  "bindings": [
+    {
+      "leftCurly": {
+        "type": "left-curly",
+        "text": "{",
+        "range": "[(0,0)..(0,1)]"
+      },
+      "elements": [
+        {
+          "key": {
+            "type": "key",
+            "text": "nullable",
+            "range": "[(0,1)..(0,9)]",
+            "originalText": "nullable"
+          },
+          "colon": {
+            "type": "colon",
+            "text": ":",
+            "range": "[(0,9)..(0,10)]"
+          },
+          "value": {
+            "type": "boolean-value",
+            "text": "false",
+            "range": "[(0,11)..(0,16)]"
+          },
+          "range": "[(0,1)..(0,16)]",
+          "type": "structure-element"
+        }
+      ],
+      "rightCurly": {
+        "type": "right-curly",
+        "text": "}",
+        "range": "[(0,17)..(0,18)]"
+      },
+      "range": "[(0,0)..(0,18)]",
+      "commas": [],
+      "type": "structure-value"
+    }
+  ],
+  "spaces": [
+    {
+      "type": "white-space",
+      "text": " ",
+      "range": "[(0,10)..(0,11)]"
+    },
+    {
+      "type": "white-space",
+      "text": " ",
+      "range": "[(0,16)..(0,17)]"
+    }
+  ],
+  "type": "template"
+}

packages/binding-parser/test/unit/data/issues/735/cst.json

@@ -0,0 +1,82 @@
+{
+  "name": "template",
+  "children": {
+    "object": [
+      {
+        "name": "object",
+        "children": {
+          "left-curly": [
+            {
+              "image": "{",
+              "startColumn": 1,
+              "endColumn": 1,
+              "tokenTypeName": "left-curly"
+            }
+          ],
+          "object-item": [
+            {
+              "name": "object-item",
+              "children": {
+                "key": [
+                  {
+                    "image": "nullable",
+                    "startColumn": 2,
+                    "endColumn": 9,
+                    "tokenTypeName": "key"
+                  }
+                ],
+                "colon": [
+                  {
+                    "image": ":",
+                    "startColumn": 10,
+                    "endColumn": 10,
+                    "tokenTypeName": "colon"
+                  }
+                ],
+                "value": [
+                  {
+                    "name": "value",
+                    "children": {
+                      "boolean-value": [
+                        {
+                          "image": "false",
+                          "startColumn": 12,
+                          "endColumn": 16,
+                          "tokenTypeName": "boolean-value"
+                        }
+                      ]
+                    },
+                    "location": {
+                      "startColumn": 12,
+                      "endColumn": 16
+                    }
+                  }
+                ]
+              },
+              "location": {
+                "startColumn": 2,
+                "endColumn": 16
+              }
+            }
+          ],
+          "right-curly": [
+            {
+              "image": "}",
+              "startColumn": 18,
+              "endColumn": 18,
+              "tokenTypeName": "right-curly"
+            }
+          ]
+        },
+        "location": {
+          "startColumn": 1,
+          "endColumn": 18
+        }
+      }
+    ]
+  },
+  "location": {
+    "startColumn": 1,
+    "endColumn": 18
+  }
+}

packages/binding-parser/test/unit/data/issues/735/input.txt

@@ -0,0 +1 @@
+{nullable: false }

packages/binding-parser/test/unit/data/issues/735/lexer-errors.json

@@ -0,0 +1 @@
+[]

packages/binding-parser/test/unit/data/issues/735/parse-errors.json

@@ -0,0 +1 @@
+[]