Enum CodeLanguage 

pub enum CodeLanguage {
    GraphQL,
    JavaScript,
    Sql,
    Mcp,
}

Supported code languages for validation and execution.

Each variant selects a different validation path in the pipeline and maps to the corresponding feature flag. The derive macro mirrors these variants in gen_validation_call() (proc-macro crates cannot depend on runtime crates, so the string matching is duplicated by necessity). A sync test in the derive crate enforces both sides stay aligned.

Adding a New Language

1. Add a variant here with from_attr / as_str / required_feature arms
2. Add the validation method to ValidationPipeline (feature-gated)
3. Add the quote! branch in pmcp-code-mode-derive/src/lib.rs gen_validation_call()
4. Update CodeModeToolBuilder for tool metadata
5. Add the new string to the sync test in the derive crate

Variants

GraphQL

GraphQL queries and mutations. Default, no feature flag required.

JavaScript

JavaScript/OpenAPI plans. Requires openapi-code-mode feature.

Sql

Raw SQL statements. Requires sql-code-mode feature.

Mcp

MCP tool composition. Requires mcp-code-mode feature.

Implementations

impl CodeLanguage

pub fn from_attr(s: &str) -> Option<Self>

Parse a language string from a derive macro attribute.

Returns None for unrecognized values — the caller should emit a compile error listing supported values.

pub fn as_str(&self) -> &'static str

The string value used in tool metadata and serde serialization.

pub fn required_feature(&self) -> Option<&'static str>

The feature flag required by this language, if any.

Trait Implementations

impl Clone for CodeLanguage

fn clone(&self) -> CodeLanguage

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for CodeLanguage

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for CodeLanguage

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for CodeLanguage

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl PartialEq for CodeLanguage

fn eq(&self, other: &CodeLanguage) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for CodeLanguage

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for CodeLanguage

impl Eq for CodeLanguage

impl StructuralPartialEq for CodeLanguage