mirror of https://github.com/boa-dev/boa.git
Kevin
10 months ago
committed by
GitHub
6 changed files with 174 additions and 63 deletions
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//! A custom `TimeZone` object.
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use crate::{property::PropertyKey, string::utf16, Context, JsObject, JsValue}; |
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use boa_gc::{Finalize, Trace}; |
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use boa_temporal::{ |
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components::{tz::TzProtocol, Instant}, |
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TemporalError, TemporalResult, |
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}; |
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use num_bigint::BigInt; |
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#[derive(Debug, Clone, Trace, Finalize)] |
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pub(crate) struct JsCustomTimeZone { |
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tz: JsObject, |
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} |
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impl TzProtocol for JsCustomTimeZone { |
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fn get_offset_nanos_for(&self, ctx: &mut dyn std::any::Any) -> TemporalResult<BigInt> { |
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let context = ctx |
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.downcast_mut::<Context>() |
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.expect("Context was not provided for a CustomTz"); |
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let method = self |
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.tz |
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.get(utf16!("getOffsetNanosFor"), context) |
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.expect("Method must exist for the custom calendar to be valid."); |
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let result = method |
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.as_callable() |
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.expect("is method") |
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.call(&method, &[], context) |
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.map_err(|e| TemporalError::general(e.to_string()))?; |
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// TODO (nekevss): Validate that the below conversion is fine vs. matching to JsValue::BigInt()
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let Some(bigint) = result.as_bigint() else { |
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return Err(TemporalError::r#type() |
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.with_message("Expected BigInt return from getOffsetNanosFor")); |
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}; |
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Ok(bigint.as_inner().clone()) |
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} |
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fn get_possible_instant_for( |
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&self, |
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ctx: &mut dyn std::any::Any, |
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) -> TemporalResult<Vec<Instant>> { |
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let _context = ctx |
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.downcast_mut::<Context>() |
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.expect("Context was not provided for a CustomTz"); |
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// TODO: Implement once Instant has been migrated to `boa_temporal`'s Instant.
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Err(TemporalError::range().with_message("Not yet implemented.")) |
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} |
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fn id(&self, ctx: &mut dyn std::any::Any) -> TemporalResult<String> { |
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let context = ctx |
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.downcast_mut::<Context>() |
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.expect("Context was not provided for a CustomTz"); |
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let ident = self |
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.tz |
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.__get__( |
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&PropertyKey::from(utf16!("id")), |
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JsValue::undefined(), |
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&mut context.into(), |
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) |
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.expect("Method must exist for the custom calendar to be valid."); |
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let JsValue::String(id) = ident else { |
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return Err( |
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TemporalError::r#type().with_message("Invalid custom Time Zone identifier type.") |
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); |
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}; |
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Ok(id.to_std_string_escaped()) |
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} |
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} |
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