WIP brace parsing for WIP parser

src/parser2.ts

@@ -63,7 +63,7 @@ const Tokens: [TokenType, RegExp][] = [
   ["quote", /(")/y],
   ["backslash", /(\\)/y],
   ["comment", /(\#)/y],
-  ["text", /([^\s\\;\[\]]+)/y],
+  ["text", /([^\s;\{\}\[\]"\\\#]+)/y],
 ];
 
 class WipScript {
@@ -144,9 +144,18 @@ class Parser {
       const [type, chars, pos] = this.next;
       switch (type) {
         case "text":
+        case "}":
           wip.addWordPiece({ bare: chars }, pos);
           break;
 
+        case "{": {
+          this.advance();
+          const text = this.parseBrace();
+          wip.addWordPiece({ text }, pos);
+          this.expect("}");
+          break;
+        }
+
         case "[": {
           this.advance();
           const script = this.parseScript();
@@ -168,8 +177,6 @@ class Parser {
         case "]":
           return wip.finishScript();
 
-        case "{":
-        case "}":
         case "quote":
         case "backslash":
         case "comment":
@@ -182,4 +189,32 @@ class Parser {
       this.advance();
     }
   }
+
+  parseBrace(): string {
+    let wip = "";
+
+    while (true) {
+      const [type, chars, pos] = this.next;
+      switch (type) {
+        case "{": {
+          wip += "{";
+          this.advance();
+          wip += this.parseBrace();
+          this.expect("}");
+          wip += "}";
+          break;
+        }
+        case "}":
+          return wip;
+        case "EOF":
+          throw new Error("Reached end of input while parsing a brace word");
+        case "ERROR":
+          throw new Error(chars);
+        default:
+          wip += chars;
+      }
+
+      this.advance();
+    }
+  }
 }