dora-robomaster/operators/deepseek_op.py

from dora import DoraStatus
import pylcs
import textwrap
import os
import pyarrow as pa
import numpy as np
from transformers import AutoModelForCausalLM, AutoTokenizer, pipeline
import json

import re


def extract_python_code_blocks(text):
    """
    Extracts Python code blocks from the given text that are enclosed in triple backticks with a python language identifier.

    Parameters:
    - text: A string that may contain one or more Python code blocks.

    Returns:
    - A list of strings, where each string is a block of Python code extracted from the text.
    """
    pattern = r"```python\n(.*?)\n```"
    matches = re.findall(pattern, text, re.DOTALL)
    if len(matches) == 0:
        pattern = r"```python\n(.*?)(?:\n```|$)"
        matches = re.findall(pattern, text, re.DOTALL)
        if len(matches) == 0:
            return [text]

    return matches


def extract_json_code_blocks(text):
    """
    Extracts json code blocks from the given text that are enclosed in triple backticks with a json language identifier.

    Parameters:
    - text: A string that may contain one or more json code blocks.

    Returns:
    - A list of strings, where each string is a block of json code extracted from the text.
    """
    pattern = r"```json\n(.*?)\n```"
    matches = re.findall(pattern, text, re.DOTALL)
    if len(matches) == 0:
        pattern = r"```json\n(.*?)(?:\n```|$)"
        matches = re.findall(pattern, text, re.DOTALL)
        if len(matches) == 0:
            return [text]

    return matches


def remove_last_line(python_code):
    """
    Removes the last line from a given string of Python code.

    Parameters:
    - python_code: A string representing Python source code.

    Returns:
    - A string with the last line removed.
    """
    lines = python_code.split("\n")  # Split the string into lines
    if lines:  # Check if there are any lines to remove
        lines.pop()  # Remove the last line
    return "\n".join(lines)  # Join the remaining lines back into a string


def calculate_similarity(source, target):
    """
    Calculate a similarity score between the source and target strings.
    This uses the edit distance relative to the length of the strings.
    """
    edit_distance = pylcs.edit_distance(source, target)
    max_length = max(len(source), len(target))
    # Normalize the score by the maximum possible edit distance (the length of the longer string)
    similarity = 1 - (edit_distance / max_length)
    return similarity


def find_best_match_location(source_code, target_block):
    """
    Find the best match for the target_block within the source_code by searching line by line,
    considering blocks of varying lengths.
    """
    source_lines = source_code.split("\n")
    target_lines = target_block.split("\n")

    best_similarity = 0
    best_start_index = -1
    best_end_index = -1

    # Iterate over the source lines to find the best matching range for all lines in target_block
    for start_index in range(len(source_lines) - len(target_lines) + 1):
        for end_index in range(start_index + len(target_lines), len(source_lines) + 1):
            current_window = "\n".join(source_lines[start_index:end_index])
            current_similarity = calculate_similarity(current_window, target_block)
            if current_similarity > best_similarity:
                best_similarity = current_similarity
                best_start_index = start_index
                best_end_index = end_index

    # Convert line indices back to character indices for replacement
    char_start_index = len("\n".join(source_lines[:best_start_index])) + (
        1 if best_start_index > 0 else 0
    )
    char_end_index = len("\n".join(source_lines[:best_end_index]))

    return char_start_index, char_end_index


def replace_code_in_source(source_code, replacement_block: str):
    """
    Replace the best matching block in the source_code with the replacement_block, considering variable block lengths.
    """
    replacement_block = extract_python_code_blocks(replacement_block)[0]
    print("replacement_block: ", replacement_block)
    replacement_block = remove_last_line(replacement_block)
    start_index, end_index = find_best_match_location(source_code, replacement_block)

    if start_index != -1 and end_index != -1:
        # Replace the best matching part with the replacement block
        new_source = (
            source_code[:start_index] + replacement_block + source_code[end_index:]
        )
        return new_source
    else:
        return source_code


def save_as(content, path):
    # use at the end of replace_2 as save_as(end_result, "file_path")
    with open(path, "w") as file:
        file.write(content)


class Operator:
    def __init__(self):
        # Load tokenizer
        model_name_or_path = "/home/peiji/deepseek-coder-6.7B-instruct-GPTQ/"
        # To use a different branch, change revision
        # For example: revision="gptq-4bit-32g-actorder_True"
        self.model = AutoModelForCausalLM.from_pretrained(
            model_name_or_path,
            device_map="auto",
            trust_remote_code=False,
            revision="main",
        )

        self.tokenizer = AutoTokenizer.from_pretrained(
            model_name_or_path, use_fast=True
        )

    def on_event(
        self,
        dora_event,
        send_output,
    ) -> DoraStatus:
        if dora_event["type"] == "INPUT":
            input = dora_event["value"][0].as_py()

            if False:
                with open(input["path"], "r", encoding="utf8") as f:
                    raw = f.read()
                prompt = f"{raw} \n {input['query']}.  "
                print("prompt: ", prompt, flush=True)
                output = self.ask_mistral(
                    "You're a python code expert. Respond with the small modified code only. No explaination",
                    prompt,
                )
                print("output: {}".format(output))

                source_code = replace_code_in_source(raw, output)
                send_output(
                    "output_file",
                    pa.array(
                        [
                            {
                                "raw": source_code,
                                # "path": input["path"],
                                # "response": output,
                                # "prompt": prompt,
                            }
                        ]
                    ),
                    dora_event["metadata"],
                )
            else:
                output = self.ask_mistral(
                    """You're a json expert. Format your response as a json with a topic and a data field in a ```json block.  No explaination needed. No code needed.
The schema for those json are:
- led: Int[3] (min: 0, max: 255) # RGB values
- blaster: Int (min: 0, max: 128)
- control: Int[3] (min: -1, max: 1)
- rotation: Int[2] (min: -55, max: 55)
- message: String

The response should look like this: 
```json
{
    "topic": "led", 
    "data": [255, 0, 0]
}
```
""",
                    input["query"],
                )
                output = extract_json_code_blocks(output)[0]
                print("output: {}".format(output), flush=True)
                try:
                    output = json.loads(output)
                    if not isinstance(output["data"], list):
                        output["data"] = [output["data"]]

                    if output["topic"] in [
                        "led",
                        "blaster",
                        "control",
                        "rotation",
                        "text",
                    ]:
                        print("output", output)
                        send_output(
                            output["topic"],
                            pa.array(output["data"]),
                            dora_event["metadata"],
                        )
                except:
                    print("Could not parse json")
                # if data is not iterable, put data in a list

        return DoraStatus.CONTINUE

    def ask_mistral(self, system_message, prompt):
        prompt_template = f"""
### Instruction
{system_message}

{prompt}

### Response:
"""

        # Generate output

        input = self.tokenizer(prompt_template, return_tensors="pt")
        input_ids = input.input_ids.cuda()

        # add attention mask here
        attention_mask = input["attention_mask"]

        output = self.model.generate(
            inputs=input_ids,
            temperature=0.7,
            do_sample=True,
            top_p=0.95,
            top_k=40,
            max_new_tokens=512,
            attention_mask=attention_mask,
            eos_token_id=self.tokenizer.eos_token_id,
        )
        # Get the tokens from the output, decode them, print them

        # Get text between im_start and im_end
        return self.tokenizer.decode(output[0], skip_special_tokens=True)[
            len(prompt_template) :
        ]


if __name__ == "__main__":
    op = Operator()

    # Path to the current file
    current_file_path = __file__

    # Directory of the current file
    current_directory = os.path.dirname(current_file_path)

    path = current_directory + "plot.py"
    with open(path, "r", encoding="utf8") as f:
        raw = f.read()

    op.on_event(
        {
            "type": "INPUT",
            "id": "tick",
            "value": pa.array(
                [
                    {
                        "raw": raw,
                        "path": path,
                        "query": "Send message my name is Carlito",
                    }
                ]
            ),
            "metadata": [],
        },
        print,
    )