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https://github.com/nushell/nushell.git
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f0c83a4459
# Description In this PR I replaced most of the raw usize IDs with [newtypes](https://doc.rust-lang.org/rust-by-example/generics/new_types.html). Some other IDs already started using new types and in this PR I did not want to touch them. To make the implementation less repetitive, I made use of a generic `Id<T>` with marker structs. If this lands I would try to move make other IDs also in this pattern. Also at some places I needed to use `cast`, I'm not sure if the type was incorrect and therefore casting not needed or if actually different ID types intermingle sometimes. # User-Facing Changes Probably few, if you got a `DeclId` via a function and placed it later again it will still work.
70 lines
2.1 KiB
Rust
70 lines
2.1 KiB
Rust
use nu_engine::{command_prelude::*, get_eval_block_with_early_return};
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use nu_protocol::{engine::CommandType, BlockId};
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/// Source a file for environment variables.
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#[derive(Clone)]
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pub struct Source;
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impl Command for Source {
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fn name(&self) -> &str {
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"source"
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}
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fn signature(&self) -> Signature {
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Signature::build("source")
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.input_output_types(vec![(Type::Any, Type::Any)])
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.required(
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"filename",
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SyntaxShape::Filepath,
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"The filepath to the script file to source.",
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)
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.category(Category::Core)
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}
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fn description(&self) -> &str {
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"Runs a script file in the current context."
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}
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fn extra_description(&self) -> &str {
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r#"This command is a parser keyword. For details, check:
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https://www.nushell.sh/book/thinking_in_nu.html"#
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}
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fn command_type(&self) -> CommandType {
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CommandType::Keyword
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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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// Note: this hidden positional is the block_id that corresponded to the 0th position
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// it is put here by the parser
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let block_id: i64 = call.req_parser_info(engine_state, stack, "block_id")?;
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let block_id = BlockId::new(block_id as usize);
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let block = engine_state.get_block(block_id).clone();
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let eval_block_with_early_return = get_eval_block_with_early_return(engine_state);
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eval_block_with_early_return(engine_state, stack, &block, input)
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}
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fn examples(&self) -> Vec<Example> {
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vec![
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Example {
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description: "Runs foo.nu in the current context",
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example: r#"source foo.nu"#,
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result: None,
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},
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Example {
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description: "Runs foo.nu in current context and call the command defined, suppose foo.nu has content: `def say-hi [] { echo 'Hi!' }`",
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example: r#"source ./foo.nu; say-hi"#,
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result: None,
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},
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]
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}
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}
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