semgrep-rule-variant-creator

To port a Semgrep rule, you translate the existing syntax to match the target language's structure. This process determines rule applicability, generates test cases, and creates translated variants for multi-language vulnerability detection.

Semgrep rules can detect vulnerabilities across multiple languages by translating existing rule logic. The automation process analyzes applicability to the target language and generates corresponding test cases to ensure accurate code analysis.

The best way to translate Semgrep rules for Go and Java is through automated rule porting. This analyzes the original rule's applicability to the target languages and generates specific test cases to validate the translated vulnerability detection logic.

You do not need to manually create test cases when converting Semgrep rules. The automated translation process generates test cases as part of the language variant creation to verify that the ported rules function effectively.

Semgrep rule porting works by first determining applicability to the target language. If the rule's core vulnerability detection logic is structurally compatible with the target language, the translation and test generation process proceeds successfully.

Limitations in porting Semgrep rules arise when the original rule's syntax or vulnerability pattern lacks a direct structural equivalent in the target language. The applicability analysis identifies these constraints before attempting any rule translation.