From a9c21f23f004cc41fdba52da365bedf5cab8adfc Mon Sep 17 00:00:00 2001
From: Jesse Luehrs <doy@tozt.net>
Date: Wed, 22 Dec 2021 21:42:39 -0500
Subject: parse quoted strings

---
 src/parse.rs   | 26 ++++++++++++++------------
 src/shell.pest | 15 +++++++++++++--
 2 files changed, 27 insertions(+), 14 deletions(-)

diff --git a/src/parse.rs b/src/parse.rs
index 4ddffba..03b865c 100644
--- a/src/parse.rs
+++ b/src/parse.rs
@@ -11,17 +11,19 @@ pub struct Word {
 }
 
 impl Word {
-    fn new(word: &str) -> Self {
-        Self {
-            word: word.to_string(),
-            interpolate: true,
-        }
-    }
-
-    fn literal(word: &str) -> Self {
+    fn build_ast(pair: pest::iterators::Pair<Rule>) -> Self {
+        assert!(matches!(pair.as_rule(), Rule::word));
+        let word = pair.into_inner().next().unwrap();
+        assert!(matches!(
+            word.as_rule(),
+            Rule::bareword | Rule::single_string | Rule::double_string
+        ));
         Self {
-            word: word.to_string(),
-            interpolate: false,
+            word: word.as_str().to_string(),
+            interpolate: matches!(
+                word.as_rule(),
+                Rule::bareword | Rule::double_string
+            ),
         }
     }
 }
@@ -36,8 +38,8 @@ impl Exe {
     fn build_ast(pair: pest::iterators::Pair<Rule>) -> Self {
         assert!(matches!(pair.as_rule(), Rule::exe));
         let mut iter = pair.into_inner();
-        let exe = Word::new(iter.next().unwrap().as_str());
-        let args = iter.map(|word| Word::new(word.as_str())).collect();
+        let exe = Word::build_ast(iter.next().unwrap());
+        let args = iter.map(Word::build_ast).collect();
         Self { exe, args }
     }
 
diff --git a/src/shell.pest b/src/shell.pest
index 49a84b4..7744873 100644
--- a/src/shell.pest
+++ b/src/shell.pest
@@ -1,5 +1,16 @@
-char = @{ !("|" | ";" | WHITESPACE) ~ ANY }
-word = @{ char+ }
+bareword_char      = @{ !("|" | ";" | "\"" | "'" | WHITESPACE | COMMENT) ~ ANY }
+single_string_char = @{ "\\'" | (!"'" ~ ANY) }
+double_string_char = @{ "\\\"" | (!"\"" ~ ANY) }
+
+bareword      = @{ bareword_char+ }
+single_string = @{ single_string_char+ }
+double_string = @{ double_string_char+ }
+
+word     = {
+    bareword |
+    "'" ~ single_string ~ "'" |
+    "\"" ~ double_string ~ "\""
+}
 
 exe      = { word+ }
 pipeline = { exe ~ ("|" ~ exe)* }
-- 
cgit v1.2.3-54-g00ecf