pgmt 0.4.8

PostgreSQL migration tool that keeps your schema files as the source of truth
Documentation 
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use super::{CommentOperation, CommentTarget, OperationKind};
use crate::catalog::extension::Extension;
use crate::catalog::id::DbObjectId;

/// Identifier for an extension
#[derive(Debug, Clone, PartialEq, Eq)]
pub struct ExtensionIdentifier {
    pub name: String,
}

impl ExtensionIdentifier {
    pub fn new(name: String) -> Self {
        Self { name }
    }

    pub fn from_extension(extension: &Extension) -> Self {
        Self {
            name: extension.name.clone(),
        }
    }
}

impl CommentTarget for ExtensionIdentifier {
    const OBJECT_TYPE: &'static str = "EXTENSION";

    fn identifier(&self) -> String {
        format!("\"{}\"", self.name)
    }

    fn db_object_id(&self) -> DbObjectId {
        DbObjectId::Extension {
            name: self.name.clone(),
        }
    }
}

/// Operations that can be performed on extensions
#[derive(Debug, Clone, PartialEq, Eq)]
pub enum ExtensionOperation {
    Create { extension: Extension },
    Drop { identifier: ExtensionIdentifier },
    Comment(CommentOperation<ExtensionIdentifier>),
}

impl ExtensionOperation {
    pub fn operation_kind(&self) -> OperationKind {
        match self {
            Self::Create { .. } => OperationKind::Create,
            Self::Drop { .. } => OperationKind::Drop,
            Self::Comment(_) => OperationKind::Alter,
        }
    }
}