mirror of
https://github.com/pezkuwichain/revive.git
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xermicus
903cbd7159
- Implement the visitor interface. This simplifies working with the AST, for example transformations into other IRs or collecting and analyzing various statistics. - Switch the explorer to use the visitor interface. - Add the reciprocal function name conversion for function names. - Some drive-by cosmetic fixes. --------- Signed-off-by: xermicus <bigcyrill@hotmail.com>
69 lines
2.1 KiB
Rust
69 lines
2.1 KiB
Rust
//! The `llvm-dwarfdump` utility helper library.
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use std::{
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path::{Path, PathBuf},
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process::{Command, Stdio},
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};
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pub static EXECUTABLE: &str = "llvm-dwarfdump";
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pub static DEBUG_LINES_ARGUMENTS: [&str; 1] = ["--debug-line"];
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pub static SOURCE_FILE_ARGUMENTS: [&str; 1] = ["--show-sources"];
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/// Calls the `llvm-dwarfdump` tool to extract debug line information
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/// from the shared object at `path`. Returns the output.
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///
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/// Provide `Some(dwarfdump_exectuable)` to override the default executable.
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pub fn debug_lines(
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shared_object: &Path,
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dwarfdump_executable: &Option<PathBuf>,
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) -> anyhow::Result<String> {
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dwarfdump(shared_object, dwarfdump_executable, &DEBUG_LINES_ARGUMENTS)
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}
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/// Calls the `llvm-dwarfdump` tool to extract the source file name.
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/// Returns the source file path.
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///
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/// Provide `Some(dwarfdump_exectuable)` to override the default executable.
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pub fn source_file(
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shared_object: &Path,
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dwarfdump_executable: &Option<PathBuf>,
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) -> anyhow::Result<PathBuf> {
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let output = dwarfdump(shared_object, dwarfdump_executable, &SOURCE_FILE_ARGUMENTS)?;
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let output = output.trim();
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if output.is_empty() {
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anyhow::bail!(
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"the shared object at path `{}` doesn't contain the source file name. Hint: compile with debug information (-g)?",
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shared_object.display()
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);
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}
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Ok(output.into())
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}
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/// The internal `llvm-dwarfdump` helper function.
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fn dwarfdump(
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shared_object: &Path,
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dwarfdump_executable: &Option<PathBuf>,
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arguments: &[&str],
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) -> anyhow::Result<String> {
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let executable = dwarfdump_executable
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.to_owned()
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.unwrap_or_else(|| PathBuf::from(EXECUTABLE));
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let output = Command::new(executable)
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.args(arguments)
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.arg(shared_object)
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.stdin(Stdio::null())
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.stdout(Stdio::piped())
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.stderr(Stdio::piped())
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.spawn()?
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.wait_with_output()?;
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if !output.status.success() {
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anyhow::bail!(String::from_utf8_lossy(&output.stderr).to_string());
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}
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Ok(String::from_utf8_lossy(&output.stdout).to_string())
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}
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