@ytt:toml.decode() fails to marshal TOML array of table values

carvel-dev / ytt

YAML templating tool that works on YAML structure instead of text

https://carvel.dev/ytt

Apache License 2.0

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@ytt:toml.decode() fails to marshal TOML array of table values #630

Closed pivotaljohn closed 2 years ago

pivotaljohn commented 2 years ago

reported: https://kubernetes.slack.com/archives/CH8KCCKA5/p1647400515157369 minimal example: https://carvel.dev/ytt/#gist:https://gist.github.com/pivotaljohn/81df98b1024374ca04ad30ad987cc70b TOML docs: https://toml.io/en/v1.0.0#array-of-tableshttps://toml.io/en/v1.0.0#array-of-tables

Environment:

ytt version (use ytt --version): v0.40.1

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gcheadle-vmware commented 2 years ago

TOML is a little weird in the syntax for an array of tables(maps). Each array item is prefixed with the parent map key and double square brackets:

| YAML |

normal_map:
  a: 1
  b: 2

| TOML |

[normal_map]
a = 1
b = 2

| YAML |

array_of_maps:
- a: 1
  b: 2
- a: 3

| TOML |

[[array_of_maps]]
a = 1
b = 2

[[array_of_maps]]
a = 3