wasmer_cli/commands/
inspect.rs

1use std::path::PathBuf;
2
3use crate::backend::RuntimeOptions;
4use anyhow::{Context, Result};
5use bytesize::ByteSize;
6use clap::Parser;
7use wasmer::*;
8use wasmer_types::target::Target;
9
10#[derive(Debug, Parser)]
11/// The options for the `wasmer validate` subcommand
12pub struct Inspect {
13    /// File to validate as WebAssembly
14    #[clap(name = "FILE")]
15    path: PathBuf,
16
17    #[clap(flatten)]
18    rt: RuntimeOptions,
19}
20
21impl Inspect {
22    /// Runs logic for the `validate` subcommand
23    pub fn execute(&self) -> Result<()> {
24        self.inner_execute()
25            .context(format!("failed to inspect `{}`", self.path.display()))
26    }
27
28    fn inner_execute(&self) -> Result<()> {
29        let mut module_contents = std::fs::read(&self.path)?;
30        let iswasm = is_wasm(&module_contents);
31
32        if !iswasm {
33            if self.path.extension().and_then(|e| e.to_str()) == Some("wat") {
34                module_contents = wat2wasm(&module_contents)
35                    .map_err(|e| anyhow::anyhow!("Cannot convert WAT to WASM: {e}"))?
36                    .to_vec();
37            } else {
38                anyhow::bail!("The input file is not a valid WebAssembly binary or WAT file");
39            }
40        }
41
42        let engine = self
43            .rt
44            .get_engine_for_module(&module_contents, &Target::default())?;
45
46        let module_len = module_contents.len();
47        let module = Module::new(&engine, module_contents)?;
48        println!(
49            "Backend used to parse the module: {}",
50            engine.deterministic_id()
51        );
52
53        println!("Type: {}", if !iswasm { "wat" } else { "wasm" });
54        println!("Size: {}", ByteSize(module_len as _));
55        println!("Imports:");
56        println!("  Functions:");
57        for f in module.imports().functions() {
58            println!("    \"{}\".\"{}\": {}", f.module(), f.name(), f.ty());
59        }
60        println!("  Memories:");
61        for f in module.imports().memories() {
62            println!("    \"{}\".\"{}\": {}", f.module(), f.name(), f.ty());
63        }
64        println!("  Tables:");
65        for f in module.imports().tables() {
66            println!("    \"{}\".\"{}\": {}", f.module(), f.name(), f.ty());
67        }
68        println!("  Globals:");
69        for f in module.imports().globals() {
70            println!("    \"{}\".\"{}\": {}", f.module(), f.name(), f.ty());
71        }
72        println!("Exports:");
73        println!("  Functions:");
74        for f in module.exports().functions() {
75            println!("    \"{}\": {}", f.name(), f.ty());
76        }
77        println!("  Memories:");
78        for f in module.exports().memories() {
79            println!("    \"{}\": {}", f.name(), f.ty());
80        }
81        println!("  Tables:");
82        for f in module.exports().tables() {
83            println!("    \"{}\": {}", f.name(), f.ty());
84        }
85        println!("  Globals:");
86        for f in module.exports().globals() {
87            println!("    \"{}\": {}", f.name(), f.ty());
88        }
89        Ok(())
90    }
91}
wasmer_cli/commands/inspect.rs

wasmer_cli/commands/
inspect.rs
