Unable to modify the `name` tag of `enumeratedValues`

[MarshTheBacca]

svdtools v0.5.0

When attempting to rename a field's enum, I get the following error:

[2026-01-18T22:15:41Z ERROR svdtools::cli] by svdtools (0.5.0)
    
    Caused by:
        0: Processing device `SIMPLE_DEVICE`
        1: According to `SIMPLE_PERIPHERAL`
        2: Processing peripheral `SIMPLE_PERIPHERAL`
        3: According to `SIMPLE_REGISTER`
        4: Processing register `SIMPLE_REGISTER`
        5: Processing field matched to `SIMPLE_FIELD`
        6: Adding read-write enumeratedValues
        7: `EnumeratedValues error: EnumeratedValues is empty
        8: EnumeratedValues is empty

I suspect svdtools sees the enum is renamed, and also expects the patch to also provide the enum variants, even if they're already present in the SVD.

This issue arose when trying to patch the hundreds of ENUM names in this SVD for the LPC176x5x MCUs.

Example SVD:

<?xml version="1.0" encoding="utf-8"?>
<device schemaVersion="1.1" xmlns:xs="http://www.w3.org/2001/XMLSchema-instance" xs:noNamespaceSchemaLocation="CMSIS-SVD.xsd">
  <name>SIMPLE_DEVICE</name>
  <peripherals>
    <peripheral>
      <name>SIMPLE_PERIPHERAL</name>
      <baseAddress>0x40000000</baseAddress>
      <registers>
        <register>
          <name>SIMPLE_REGISTER</name>
          <description>Example register.</description>
          <addressOffset>0x000</addressOffset>
          <fields>
            <field>
              <name>SIMPLE_FIELD</name>
              <bitRange>[0:0]</bitRange>
              <enumeratedValues>
                <name>ENUM</name>
                <enumeratedValue>
                  <name>STOP</name>
                  <value>0</value>
                </enumeratedValue>
                <enumeratedValue>
                  <name>RUN</name>
                  <value>1</value>
                </enumeratedValue>
              </enumeratedValues>
            </field>
          </fields>
        </register>
      </registers>
    </peripheral>
  </peripherals>
</device>

Example patch:

_svd: enum-issue.svd

SIMPLE_PERIPHERAL:
  SIMPLE_REGISTER:
    SIMPLE_FIELD:
      _name: "NEW_ENUM_NAME"