start building for dollar expansions

1 files changed, 26 insertions, 0 deletions

diff --git a/src/lexparse.c b/src/lexparse.c
index 3d48cfe..4ef228c 100644
--- a/src/lexparse.c
+++ b/src/lexparse.c
@@ -1,4 +1,5 @@
 #include <ctype.h>
+#include <stddef.h>
 #include "syntax.h"
 #include "../src/utils.h"
 
@@ -38,6 +39,31 @@ MaybeToken consolidate_buffer(LexingBuffer* buf) {
 }
 
 
+static MaybeChunk handle_dollar_expansion(char* line, size_t* pos, QuotationMode qmode) {
+    (*pos)++;
+
+    if (line[*pos] == '(') {
+        // TODO
+        exit(66);
+    } else if (line[*pos] == '_' || isalnum(line[*pos])){
+        String buf = make_String(256); 
+        while (line[*pos] == '_' || isalnum(line[*pos])) {
+            push_to_String(&buf, line[(*pos)++]);
+        }
+        return (MaybeChunk){
+            .some = true,
+            .value = (Chunk){
+                .qmode = qmode, 
+                .kind = CHUNK_VAR, 
+                .as.varname = inner(&buf)
+            }
+        };
+    } else {
+        return (MaybeChunk){.some = false}; 
+    }
+}
+
+
 static Chunk collect_un_q_literal(char* line, size_t* pos) {
     String buf = make_String(256);
     size_t i;