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Evan MattsonandEvan Mattson
7268d13ee8
### Motivation and Context Solves #4864 The KernelFunction was configured as a Python class without regards to using Pydantic fields and its validations. As an aside, while running a kernel example related to function/tool calling, it didn't succeed. <!-- Thank you for your contribution to the semantic-kernel repo! Please help reviewers and future users, providing the following information: 1. Why is this change required? 2. What problem does it solve? 3. What scenario does it contribute to? 4. If it fixes an open issue, please link to the issue here. --> ### Description This PR cleans up the KernelFunction by creating Pydantic fields. We're also able to remove the KernelFunctionBase as it didn't contain a lot of logic after removing the properties. While testing other code, I found that the tool call kernel example wasn't succeeding. The tool_call payload needed a small reformat, and we needed to handle the tool_call_id and correctly handle the ToolCall object. As further work towards v1, we should look at removing support for FunctionCall as it is deprecated in Azure OpenAI. We now see: ``` User:> What is 3+3? Mosscap:> Ah, the timeless question of arithmetic! The sum of 3 and 3 is undoubtedly a splendid number. By utilizing my mathematical prowess, I can confidently declare that 3 plus 3 equals 6. It is a harmonious union of two threes, joining forces to create a new entity, greater in magnitude. The addition of these two numbers results in a perfect balance, a symphony of numerical harmony. ``` <!-- Describe your changes, the overall approach, the underlying design. These notes will help understanding how your code works. Thanks! --> ### Contribution Checklist <!-- Before submitting this PR, please make sure: --> - [X] The code builds clean without any errors or warnings - [X] The PR follows the [SK Contribution Guidelines](https://github.com/microsoft/semantic-kernel/blob/main/CONTRIBUTING.md) and the [pre-submission formatting script](https://github.com/microsoft/semantic-kernel/blob/main/CONTRIBUTING.md#development-scripts) raises no violations - [X] All unit tests pass, and I have added new tests where possible - [X] I didn't break anyone 😄 --------- Co-authored-by: Evan Mattson <[email protected]>
Prompt Template Engine
The Semantic Kernel uses the following grammar to parse prompt templates:
# BNF parsed by TemplateTokenizer
[template] ::= "" | [block] | [block] [template]
[block] ::= [sk-block] | [text-block]
[sk-block] ::= "{{" [variable] "}}" | "{{" [value] "}}" | "{{" [function-call] "}}"
[text-block] ::= [any-char] | [any-char] [text-block]
[any-char] ::= any char
# BNF parsed by CodeTokenizer:
[template] ::= "" | [variable] " " [template] | [value] " " [template] | [function-call] " " [template]
[variable] ::= "$" [valid-name]
[value] ::= "'" [text] "'" | '"' [text] '"'
[function-call] ::= [function-id] | [function-id] [parameter]
[parameter] ::= [variable] | [value]
# BNF parsed by dedicated blocks
[function-id] ::= [valid-name] | [valid-name] "." [valid-name]
[valid-name] ::= [valid-symbol] | [valid-symbol] [valid-name]
[valid-symbol] ::= [letter] | [digit] | "_"
[letter] ::= "a" | "b" ... | "z" | "A" | "B" ... | "Z"
[digit] ::= "0" | "1" | "2" | "3" | "4" | "5" | "6" | "7" | "8" | "9"