76 lines
2.1 KiB
Rust
76 lines
2.1 KiB
Rust
use std::process;
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use serde::{Deserialize, Serialize};
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use tree_sitter::Node as SyntaxNode;
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use crate::{
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error::{RuntimeError, SyntaxError, ValidationError},
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AbstractTree, Context, Format, Type, Value,
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};
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/// An external program invokation.
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#[derive(Debug, Clone, Serialize, Deserialize, Eq, PartialEq, PartialOrd, Ord)]
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pub struct Command {
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command_text: String,
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command_arguments: Vec<String>,
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}
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impl AbstractTree for Command {
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fn from_syntax(
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node: SyntaxNode,
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source: &str,
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_context: &Context,
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) -> Result<Self, SyntaxError> {
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SyntaxError::expect_syntax_node(source, "command", node)?;
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let command_text_node = node.child(1).unwrap();
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let command_text = source[command_text_node.byte_range()].to_string();
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let mut command_arguments = Vec::new();
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for index in 2..node.child_count() {
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let text_node = node.child(index).unwrap();
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let mut text = source[text_node.byte_range()].to_string();
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if (text.starts_with('\'') && text.ends_with('\''))
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|| (text.starts_with('"') && text.ends_with('"'))
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|| (text.starts_with('`') && text.ends_with('`'))
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{
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text = text[1..text.len() - 1].to_string();
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}
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command_arguments.push(text);
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}
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Ok(Command {
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command_text,
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command_arguments,
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})
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}
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fn expected_type(&self, _context: &Context) -> Result<Type, ValidationError> {
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Ok(Type::String)
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}
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fn validate(&self, _source: &str, _context: &Context) -> Result<(), ValidationError> {
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todo!()
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}
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fn run(&self, _source: &str, _context: &Context) -> Result<Value, RuntimeError> {
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let output = process::Command::new(&self.command_text)
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.args(&self.command_arguments)
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.spawn()?
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.wait_with_output()?
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.stdout;
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let string = String::from_utf8(output)?;
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Ok(Value::String(string))
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}
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}
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impl Format for Command {
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fn format(&self, _output: &mut String, _indent_level: u8) {
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todo!()
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}
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}
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