Highlight strings

src/document.rs

@@ -175,8 +175,8 @@ impl Document {
         let current_row = &mut self.rows[at.y];
         let mut new_row = current_row.split(at.x);
 
-        current_row.highlight(None);
-        new_row.highlight(None);
+        current_row.highlight(self.file_type.highlighting_options(), None);
+        new_row.highlight(self.file_type.highlighting_options(), None);
 
         #[allow(clippy::integer_arithmetic)]
         self.rows.insert(at.y + 1, new_row);

src/filetype.rs

@@ -6,6 +6,7 @@ pub struct FileType {
 #[derive(Default, Copy, Clone)]
 pub struct HighlightingOptions {
     numbers: bool,
+    strings: bool,
 }
 
 impl Default for FileType {
@@ -30,7 +31,10 @@ impl FileType {
         if file_name.ends_with(".rs") {
             return Self {
                 name: String::from("Rust"),
-                hl_opts: HighlightingOptions { numbers: true },
+                hl_opts: HighlightingOptions {
+                    numbers: true,
+                    strings: true,
+                },
             };
         }
 
@@ -42,4 +46,8 @@ impl HighlightingOptions {
     pub fn numbers(self) -> bool {
         self.numbers
     }
+
+    pub fn strings(self) -> bool {
+        self.strings
+    }
 }

src/highlighting.rs

@@ -5,6 +5,7 @@ pub enum Type {
     None,
     Number,
     Match,
+    String,
 }
 
 impl Type {
@@ -12,6 +13,7 @@ impl Type {
         match self {
             Type::Number => color::Rgb(220, 163, 163),
             Type::Match => color::Rgb(38, 139, 210),
+            Type::String => color::Rgb(211, 54, 130),
             _ => color::Rgb(255, 255, 255),
         }
     }

src/row.rs

@@ -210,6 +210,7 @@ impl Row {
         }
 
         let mut prev_is_separator = true;
+        let mut in_string = false;
         let mut index = 0;
         while let Some(c) = chars.get(index) {
             if let Some(word) = word {
@@ -231,6 +232,28 @@ impl Row {
                 &highlighting::Type::None
             };
 
+            if opts.strings() {
+                if in_string {
+                    highlighting.push(highlighting::Type::String);
+                    if *c == '"' {
+                        in_string = false;
+                        prev_is_separator = true;
+                    } else {
+                        prev_is_separator = false;
+                    }
+
+                    index += 1;
+                    continue;
+                } else if prev_is_separator && *c == '"' {
+                    highlighting.push(highlighting::Type::String);
+
+                    in_string = true;
+                    prev_is_separator = true;
+                    index += 1;
+                    continue;
+                }
+            }
+
             if opts.numbers() {
                 if (c.is_ascii_digit()
                     && (prev_is_separator || previous_highlight == &highlighting::Type::Number))