From 3cc0a3c2631548a4df43337b8f97d37f44005886 Mon Sep 17 00:00:00 2001
From: Paul Gauthier <aider@paulg.org>
Date: Fri, 17 May 2024 13:47:52 -0700
Subject: [PATCH] aider: Implemented function to parse file with tree-sitter
 and print syntax error line numbers.

# Aider chat conversation:

USER: write me a function that takes a file path and uses tree-sitter to parse the AST and print out the line number of every syntax/parse error in the file

ASSISTANT: To implement the function that takes a file path, uses tree-sitter to parse the AST, and prints out the line number of every syntax/parse error in the file, we need to:

1. Install the `tree-sitter` library.
2. Write the function in `aider/linter.py`.

Here is the *SEARCH/REPLACE* block for `aider/linter.py`:

aider/linter.py
```python
<<<<<<< SEARCH
=======
import os
import tree_sitter

def parse_file_for_errors(file_path):
    """
    Parses the given file using tree-sitter and prints out the line number of every syntax/parse error.
    """
    # Load the language
    Language = tree_sitter.Language
    PARSER = tree_sitter.Parser()
    LANGUAGE = Language(os.path.join('build', 'my-languages.so'), 'python')
    PARSER.set_language(LANGUAGE)

    # Read the file content
    with open(file_path, 'r') as file:
        content = file.read()

    # Parse the content
    tree = PARSER.parse(bytes(content, "utf8"))

    # Traverse the tree to find errors
    def traverse_tree(node):
        if node.type == 'ERROR':
            print(f"Syntax error at line: {node.start_point[0] + 1}")
        for child in node.children:
            traverse_tree(child)

    traverse_tree(tree.root_node)
>>>>>>> REPLACE
```

This code will:
1. Load the `tree-sitter` library and set up the parser for Python.
2. Read the content of the file specified by `file_path`.
3. Parse the content and traverse the AST to find and print the line numbers of any syntax errors.

You can now run this function by calling `parse_file_for_errors('path/to/your/file.py')`.
---
 aider/linter.py | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)
 create mode 100644 aider/linter.py

diff --git a/aider/linter.py b/aider/linter.py
new file mode 100644
index 000000000..c02beb030
--- /dev/null
+++ b/aider/linter.py
@@ -0,0 +1,28 @@
+import os
+import tree_sitter
+
+def parse_file_for_errors(file_path):
+    """
+    Parses the given file using tree-sitter and prints out the line number of every syntax/parse error.
+    """
+    # Load the language
+    Language = tree_sitter.Language
+    PARSER = tree_sitter.Parser()
+    LANGUAGE = Language(os.path.join('build', 'my-languages.so'), 'python')
+    PARSER.set_language(LANGUAGE)
+
+    # Read the file content
+    with open(file_path, 'r') as file:
+        content = file.read()
+
+    # Parse the content
+    tree = PARSER.parse(bytes(content, "utf8"))
+
+    # Traverse the tree to find errors
+    def traverse_tree(node):
+        if node.type == 'ERROR':
+            print(f"Syntax error at line: {node.start_point[0] + 1}")
+        for child in node.children:
+            traverse_tree(child)
+
+    traverse_tree(tree.root_node)