53 lines
1.5 KiB
Rust
53 lines
1.5 KiB
Rust
use crate::def_package;
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use crate::plugin::*;
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use crate::types::dynamic::Tag;
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use crate::{Dynamic, RhaiResultOf, ERR, INT};
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#[cfg(feature = "no_std")]
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use std::prelude::v1::*;
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def_package! {
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/// Package of core language features.
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crate::LanguageCorePackage => |lib| {
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lib.standard = true;
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combine_with_exported_module!(lib, "language_core", core_functions);
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}
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}
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#[export_module]
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mod core_functions {
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#[rhai_fn(name = "tag", get = "tag", pure)]
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pub fn get_tag(value: &mut Dynamic) -> INT {
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value.tag() as INT
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}
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#[rhai_fn(name = "set_tag", set = "tag", return_raw)]
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pub fn set_tag(value: &mut Dynamic, tag: INT) -> RhaiResultOf<()> {
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if tag < Tag::MIN as INT {
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Err(ERR::ErrorArithmetic(
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format!(
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"{} is too small to fit into a tag (must be between {} and {})",
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tag,
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Tag::MIN,
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Tag::MAX
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),
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Position::NONE,
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)
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.into())
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} else if tag > Tag::MAX as INT {
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Err(ERR::ErrorArithmetic(
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format!(
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"{} is too large to fit into a tag (must be between {} and {})",
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tag,
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Tag::MIN,
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Tag::MAX
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),
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Position::NONE,
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)
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.into())
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} else {
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value.set_tag(tag as Tag);
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Ok(())
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}
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}
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}
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