From 1216aceec6e007fbb84d1358e28be7b573c66501 Mon Sep 17 00:00:00 2001
From: Melody Horn <melody@boringcactus.com>
Date: Tue, 6 Apr 2021 21:16:37 -0600
Subject: implement GNUful Static Pattern Rules

---
 src/makefile/input.rs | 31 ++++++++++++++++++++++++++++++-
 1 file changed, 30 insertions(+), 1 deletion(-)

diff --git a/src/makefile/input.rs b/src/makefile/input.rs
index 9c895e1..460a8a0 100644
--- a/src/makefile/input.rs
+++ b/src/makefile/input.rs
@@ -474,6 +474,16 @@ impl<'a, 'parent, R: BufRead> MakefileReader<'a, 'parent, R> {
         let (targets, not_targets) = line_tokens
             .split_once(':')
             .ok_or_else(|| eyre!("read_rule couldn't find a ':' on line {}", line_number))?;
+        #[cfg(feature = "full")]
+        let (static_targets, targets, not_targets) = if not_targets.contains_text(":") {
+            // ugh, this is probably a Static Pattern Rule
+            let (pattern, not_targets) = not_targets
+                .split_once(':')
+                .ok_or_else(|| eyre!("bro hold the fuck up it literally just had that"))?;
+            (Some(targets), pattern, not_targets)
+        } else {
+            (None, targets, not_targets)
+        };
         let targets = self.expand_macros(&targets)?;
         let targets = targets.split_whitespace().collect::<Vec<_>>();
         let (prerequisites, mut commands) = match not_targets.split_once(';') {
@@ -534,7 +544,26 @@ impl<'a, 'parent, R: BufRead> MakefileReader<'a, 'parent, R> {
                 commands,
             };
 
-            self.inference_rules.push(new_rule);
+            if let Some(static_targets) = static_targets {
+                let static_targets = self.expand_macros(&static_targets)?;
+                let static_targets = static_targets.split_whitespace();
+                for real_target in static_targets {
+                    if new_rule.matches(real_target)? {
+                        let new_target = Target {
+                            name: real_target.to_owned(),
+                            prerequisites: new_rule.prereqs(real_target)?.collect(),
+                            commands: new_rule.commands.clone(),
+                            stem: new_rule
+                                .first_match(real_target)?
+                                .and_then(|x| x.get(1).map(|x| x.as_str().to_owned())),
+                            already_updated: Cell::new(false),
+                        };
+                        self.targets.insert(real_target.to_owned(), new_target);
+                    }
+                }
+            } else {
+                self.inference_rules.push(new_rule);
+            }
             return Ok(());
         }
 
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