garden/cmds/
eval.rs

1use anyhow::Result;
2use clap::Parser;
3
4use crate::{eval, model, query};
5
6/// Evaluate garden expressions
7#[derive(Parser, Clone, Debug)]
8#[command(author, about, long_about)]
9pub struct EvalOptions {
10    /// Set variables using 'name=value' expressions
11    #[arg(long, short = 'D')]
12    define: Vec<String>,
13    /// Expression to evaluate
14    expr: String,
15    /// Tree within which to evaluate
16    tree: Option<String>,
17    /// Garden within which to evaluate
18    garden: Option<String>,
19}
20
21/// Evaluate a garden expression using the Eval parameters
22pub fn main(app_context: &model::ApplicationContext, eval: &EvalOptions) -> Result<()> {
23    app_context
24        .get_root_config_mut()
25        .apply_defines(&eval.define);
26    match eval.tree.as_ref() {
27        None => {
28            // Evaluate and print the expression in global scope. No trees or gardens
29            // were provided so only the top-level variables are included.
30            let config = app_context.get_root_config();
31            let value = eval::value(app_context, config, &eval.expr);
32            println!("{value}");
33        }
34        Some(tree) => {
35            // Evaluate and print the garden expression.
36            let garden = eval.garden.as_deref();
37            let ctx = query::find_tree(app_context, app_context.get_root_id(), tree, garden)?;
38            let graft_config = ctx.config.map(|graft_id| app_context.get_config(graft_id));
39            let value = eval::tree_value(
40                app_context,
41                app_context.get_root_config(),
42                graft_config,
43                &eval.expr,
44                &ctx.tree,
45                ctx.garden.as_ref(),
46            );
47            println!("{value}");
48        }
49    }
50
51    Ok(())
52}
garden/cmds/eval.rs

garden/cmds/
eval.rs
