From fc56055ecb63ef05b54aa098bde2d3b61c68e8b2 Mon Sep 17 00:00:00 2001
From: Melody Horn <melody@boringcactus.com>
Date: Fri, 2 Apr 2021 19:54:57 -0600
Subject: implement `origin`
---
src/makefile/functions.rs | 14 ++++++++++++++
src/makefile/macro.rs | 13 +++++++++++++
2 files changed, 27 insertions(+)
diff --git a/src/makefile/functions.rs b/src/makefile/functions.rs
index bc244cb..a61a0cf 100644
--- a/src/makefile/functions.rs
+++ b/src/makefile/functions.rs
@@ -56,6 +56,11 @@ pub fn expand_call(name: &str, args: &[TokenString], macros: &MacroSet) -> Resul
// eval
"eval" => todo!(),
+ "origin" => {
+ assert_eq!(args.len(), 1);
+ origin::origin(macros, &args[0])
+ }
+
// shell
"shell" => todo!(),
@@ -260,6 +265,15 @@ mod call {
}
}
+mod origin {
+ use super::*;
+
+ pub fn origin(macros: &MacroSet, variable: &TokenString) -> Result<String> {
+ let variable = macros.expand(variable)?;
+ Ok(macros.origin(&variable).to_owned())
+ }
+}
+
#[cfg(test)]
mod test {
use super::*;
diff --git a/src/makefile/macro.rs b/src/makefile/macro.rs
index bb4a72d..f788edc 100644
--- a/src/makefile/macro.rs
+++ b/src/makefile/macro.rs
@@ -124,6 +124,19 @@ impl<'parent, 'lookup> Set<'parent, 'lookup> {
Ok(result)
}
+ #[cfg(feature = "full")]
+ pub fn origin(&self, name: &str) -> &'static str {
+ match self.data.get(name) {
+ None => self.parent.map_or("undefined", |p| p.origin(name)),
+ Some((Source::Builtin, _)) => "default",
+ Some((Source::Environment, _)) => "environment",
+ // TODO figure out when to return "environment override"
+ Some((Source::File, _)) => "file",
+ Some((Source::CommandLineOrMakeflags, _)) => "command line",
+ // TODO handle override and automatic
+ }
+ }
+
pub fn with_lookup<'l, 's: 'l>(&'s self, lookup: &'l dyn LookupInternal) -> Set<'s, 'l> {
Set {
parent: Some(self),
--
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