Function apply_json_patch_operation

crates/api-server/src/patch.rs:162–191

Apply a single JSON Patch operation

(value: &Value, op: &JsonPatchOperation)

/// Apply a single JSON Patch operation
fn apply_json_patch_operation(value: &Value, op: &JsonPatchOperation) -> Result<Value, PatchError> {
    let require_value = |what: &str| -> Result<&Value, PatchError> {
        op.value
            .as_ref()
            .ok_or_else(|| PatchError::InvalidPatch(format!("'value' required for {}", what)))
    };
    match op.op {
        JsonPatchOp::Add => add_operation(value, &op.path, require_value("add")?),
        JsonPatchOp::Remove => remove_operation(value, &op.path),
        JsonPatchOp::Replace => replace_operation(value, &op.path, require_value("replace")?),
        JsonPatchOp::Move => {
            let from = op
                .from
                .as_ref()
                .ok_or_else(|| PatchError::InvalidPatch("'from' required for move".to_string()))?;
            move_operation(value, from, &op.path)
        }
        JsonPatchOp::Copy => {
            let from = op
                .from
                .as_ref()
                .ok_or_else(|| PatchError::InvalidPatch("'from' required for copy".to_string()))?;
            copy_operation(value, from, &op.path)
        }
        JsonPatchOp::Test => {
            test_operation(value, &op.path, require_value("test")?)?;
            Ok(value.clone())
        }
    }
}

/// Add operation - adds a value at the specified path
fn add_operation(value: &Value, path: &str, new_value: &Value) -> Result<Value, PatchError> {