From 5a72fb28fb69a476437141a4eb898d6d001dd281 Mon Sep 17 00:00:00 2001
From: Melody Horn <melody@boringcactus.com>
Date: Wed, 14 Apr 2021 20:17:42 -0600
Subject: implement potentially-mixed-quoted conditional args

---
 src/makefile/conditional.rs | 41 +++++++++++++++++++++++++++++++++++++----
 src/makefile/input.rs       | 10 +++++-----
 src/makefile/token.rs       |  2 +-
 3 files changed, 43 insertions(+), 10 deletions(-)

diff --git a/src/makefile/conditional.rs b/src/makefile/conditional.rs
index 95cab9e..98400e6 100644
--- a/src/makefile/conditional.rs
+++ b/src/makefile/conditional.rs
@@ -2,7 +2,7 @@ use eyre::{bail, Result};
 
 use super::token::TokenString;
 
-#[derive(Debug)]
+#[derive(Debug, Eq, PartialEq)]
 pub enum Line {
     /// spelled "ifeq"
     IfEqual(TokenString, TokenString),
@@ -73,10 +73,23 @@ fn decode_condition_args(line_body: &str) -> Option<(TokenString, TokenString)>
         let mut tokens = tokens;
         tokens.strip_prefix("(");
         tokens.strip_suffix(")");
-        tokens.split_once(',')?
+        tokens.split_once(",")?
     } else {
-        // TODO see if i really need to implement potentially-mixed-quoted args
-        return None;
+        let quotes = &["\"", "'"];
+        let mut split_pair = None;
+        for (left_quote, right_quote) in quotes
+            .iter()
+            .flat_map(|left| quotes.iter().map(move |right| (left, right)))
+        {
+            if tokens.starts_with(left_quote) && tokens.ends_with(right_quote) {
+                let mut tokens = tokens;
+                tokens.strip_prefix(left_quote);
+                tokens.strip_suffix(right_quote);
+                split_pair = Some(tokens.split_once(&format!("{} {}", left_quote, right_quote))?);
+                break;
+            }
+        }
+        split_pair?
     };
     arg1.trim_end();
     arg2.trim_start();
@@ -182,3 +195,23 @@ impl Line {
         })
     }
 }
+
+#[cfg(test)]
+mod test {
+    use super::*;
+
+    type R = Result<()>;
+
+    #[test]
+    fn quotes() -> R {
+        let line = r#"ifeq 'x' "3""#;
+        assert_eq!(
+            Line::from(line, |_| panic!())?,
+            Some(Line::IfEqual(
+                TokenString::text("x"),
+                TokenString::text("3")
+            ))
+        );
+        Ok(())
+    }
+}
diff --git a/src/makefile/input.rs b/src/makefile/input.rs
index 5a1259f..4a0f086 100644
--- a/src/makefile/input.rs
+++ b/src/makefile/input.rs
@@ -569,13 +569,13 @@ impl<'a, 'parent, R: BufRead> MakefileReader<'a, 'parent, R> {
 
     fn read_rule(&mut self, line_tokens: TokenString, line_number: usize) -> Result<()> {
         let (targets, not_targets) = line_tokens
-            .split_once(':')
+            .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(':')
+                .split_once(":")
                 .ok_or_else(|| eyre!("bro hold the fuck up it literally just had that"))?;
             (Some(targets), pattern, not_targets)
         } else {
@@ -583,7 +583,7 @@ impl<'a, 'parent, R: BufRead> MakefileReader<'a, 'parent, R> {
         };
         let targets = self.expand_macros(&targets)?;
         let targets = targets.split_whitespace().collect::<Vec<_>>();
-        let (prerequisites, mut commands) = match not_targets.split_once(';') {
+        let (prerequisites, mut commands) = match not_targets.split_once(";") {
             Some((prerequisites, command)) => {
                 // TODO make sure escaped newlines get retroactively treated correctly here
                 (prerequisites, vec![command])
@@ -801,8 +801,8 @@ impl<'a, 'parent, R: BufRead> MakefileReader<'a, 'parent, R> {
             (line_tokens, value)
         } else {
             line_tokens
-                .split_once('=')
-                .ok_or_else(|| eyre!("read_rule couldn't find a ':' on line {}", line_number))?
+                .split_once("=")
+                .ok_or_else(|| eyre!("read_macro couldn't find a '=' on line {}", line_number))?
         };
         let name = self.expand_macros(&name)?;
         // GNUisms are annoying, but popular
diff --git a/src/makefile/token.rs b/src/makefile/token.rs
index 05ad98c..2721387 100644
--- a/src/makefile/token.rs
+++ b/src/makefile/token.rs
@@ -53,7 +53,7 @@ impl TokenString {
         &mut self.0[0]
     }
 
-    pub fn split_once(&self, delimiter: char) -> Option<(Self, Self)> {
+    pub fn split_once(&self, delimiter: &str) -> Option<(Self, Self)> {
         let mut result0 = vec![];
         let mut iter = self.0.iter();
         while let Some(t) = iter.next() {
-- 
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