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Nanaloveyuki
83 lines
2.4 KiB
Markdown
83 lines
2.4 KiB
Markdown
---
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name: text-formatter-config-to-json
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group: api
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category: config
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update-time: 20260512
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description: Convert TextFormatterConfig into a JSON value for formatter export, persistence, or generated config output.
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key-word:
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- formatter
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- config
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- json
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- public
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---
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## Text-formatter-config-to-json
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Convert a typed `TextFormatterConfig` into a `JsonValue`. This helper exports formatter toggles, separators, color settings, markup behavior, and optional style tags in a machine-readable form.
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### Interface
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```moonbit
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pub fn text_formatter_config_to_json(config : TextFormatterConfig) -> @json_parser.JsonValue {}
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```
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#### input
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- `config : TextFormatterConfig` - Formatter configuration to export.
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#### output
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- `JsonValue` - Structured JSON representation of the formatter config.
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### Explanation
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Detailed rules explaining key parameters and behaviors
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- The output includes visibility flags, separators, template, color settings, and markup settings.
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- `style_tags` is exported only when the map is not empty.
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- Enum-like formatter options are serialized using their stable label strings.
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- The JSON shape matches the formatter section accepted by config parsing.
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### How to Use
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Here are some specific examples provided.
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#### When Need Structured Formatter Export
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When formatter config should be embedded inside a larger config object:
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```moonbit
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let value = text_formatter_config_to_json(TextFormatterConfig::new(show_target=false))
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```
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In this example, callers can compose the JSON value without re-implementing serialization.
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#### When Need To Persist Formatter Settings
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When generated formatter policy should be stored or inspected:
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```moonbit
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let formatter_json = text_formatter_config_to_json(
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TextFormatterConfig::new(separator=" | ", template="[{level}] {message}"),
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)
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```
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In this example, the config becomes transport-friendly structured data.
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### Error Case
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e.g.:
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- If `style_tags` is empty, the field is omitted instead of being emitted as an empty object.
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- If callers need immediate text output rather than a JSON value, they should use `stringify_text_formatter_config(...)` instead.
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### Notes
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Notes are here.
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1. This helper exports formatter configuration, not rendered log output.
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2. Use it when downstream code expects `JsonValue`.
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3. Pair it with `TextFormatterConfig::new(...)` for code-generated formatter policies.
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4. The output is compatible with config roundtrip workflows.
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