forked from extern/nushell
9bc4e6794d
Reasoning: Most missing math commands are implemented with #7258. The `meval` crate itself declares that it doesn't strive to stringent standards (https://docs.rs/meval/latest/meval/#related-projects). For example no particular special casing or transformations are performed to ensure numerical stability. It uses the same rust `std` library functions we use or have access to (and `f64`). While the command call syntax in nushell may be a bit more verbose, having a single source of truth and common commands is beneficial. Furthermore the `math` commands can themselves implement broadcasting over lists (or table columns). Closes #7073 Removed dependencies: - `meval` - `nom 1.2.4` (duplicate) User-Facing Changes: Scripts using `math eval` will break. We remove a further `eval` like behavior to get results through runtime evaluation (albeit limited in scope) Tests: - Updated tests that internally used `math eval`. - Removed one test that primarily used `math eval` to obtain a result from `str join`
41 lines
997 B
Rust
41 lines
997 B
Rust
use nu_protocol::ast::Call;
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use nu_protocol::engine::{Command, EngineState, Stack};
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use nu_protocol::{Category, PipelineData, ShellError, Signature, SyntaxShape};
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#[derive(Clone)]
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pub struct SubCommand;
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impl Command for SubCommand {
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fn name(&self) -> &str {
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"math eval"
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}
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fn signature(&self) -> Signature {
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Signature::build("math eval")
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.rest(
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"ignored",
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SyntaxShape::Any,
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"arguments to deprecated command are ignored",
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)
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.category(Category::Deprecated)
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}
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fn usage(&self) -> &str {
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"Deprecated command"
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}
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fn run(
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&self,
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_engine_state: &EngineState,
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_stack: &mut Stack,
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call: &Call,
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_input: PipelineData,
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) -> Result<PipelineData, ShellError> {
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Err(ShellError::DeprecatedCommand(
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self.name().to_string(),
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"math <subcommands>".to_string(),
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call.head,
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))
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}
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}
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