import_optimization_demo/
import_optimization_demo.rs

1//! Demonstration of import optimization code actions
2//!
3//! This example shows how the import optimizer integrates with LSP code actions
4//! to provide comprehensive import management.
5
6use perl_lsp_code_actions::{CodeActionKind, CodeActionsProvider};
7use perl_parser_core::Parser;
8
9fn main() -> Result<(), Box<dyn std::error::Error>> {
10    let source = r#"#!/usr/bin/perl
11use warnings;
12use strict;
13use List::Util qw(max min sum);
14use Data::Dumper qw(Dumper);
15use List::Util qw(first);
16use JSON qw(encode_json decode_json to_json);
17
18# Only use some imports - others are unused
19my @numbers = (1, 2, 3, 4, 5);
20my $max = max(@numbers);
21print Dumper(\@numbers);
22my $json = encode_json({ max => $max });
23"#;
24
25    println!("Original Perl code:");
26    println!("{}", source);
27    println!("\n{}\n", "=".repeat(70));
28
29    let mut parser = Parser::new(source);
30    let ast = parser.parse()?;
31
32    let provider = CodeActionsProvider::new(source.to_string());
33    let actions = provider.get_code_actions(&ast, (0, source.len()), &[]);
34
35    println!("Available code actions:");
36    for (i, action) in actions.iter().enumerate() {
37        println!("  {}. {} ({:?})", i + 1, action.title, action.kind);
38    }
39
40    // Find the organize imports action
41    if let Some(organize_action) =
42        actions.iter().find(|a| matches!(a.kind, CodeActionKind::SourceOrganizeImports))
43    {
44        println!("\n{}\n", "=".repeat(70));
45        println!("Organize Imports Action:");
46        println!("  Title: {}", organize_action.title);
47        println!("  Edits: {} change(s)", organize_action.edit.changes.len());
48
49        for (i, edit) in organize_action.edit.changes.iter().enumerate() {
50            println!("\n  Edit #{}:", i + 1);
51            println!("    Range: {:?}", edit.location);
52            println!("    New text:");
53            for line in edit.new_text.lines() {
54                println!("      {}", line);
55            }
56        }
57    } else {
58        println!("\nNo 'Organize Imports' action available");
59    }
60
61    // Demonstrate missing imports detection
62    let source_with_missing = r#"use strict;
63use warnings;
64
65my $result = JSON::encode_json({key => 'value'});
66my $path = File::Spec::catfile('/tmp', 'test.txt');
67"#;
68
69    println!("\n{}\n", "=".repeat(70));
70    println!("Code with missing imports:");
71    println!("{}", source_with_missing);
72
73    let mut parser2 = Parser::new(source_with_missing);
74    let ast2 = parser2.parse()?;
75    let provider2 = CodeActionsProvider::new(source_with_missing.to_string());
76    let actions2 = provider2.get_code_actions(&ast2, (0, source_with_missing.len()), &[]);
77
78    println!("\nDetected actions:");
79    for (i, action) in actions2.iter().enumerate() {
80        if action.title.contains("import") {
81            println!("  {}. {}", i + 1, action.title);
82        }
83    }
84
85    Ok(())
86}
import_optimization_demo/import_optimization_demo.rs

import_optimization_demo/
import_optimization_demo.rs
