Major updates/cleanup.

include/internal/io/tokens.h

@@ -17,7 +17,6 @@ struct Token {
     RubyFunction,
     RubyArg,
     Function,
-    Any,
     Shell,
     File,
     Suffix,

include/internal/parser/parser.h

@@ -93,6 +93,9 @@ struct Parser {
     std::vector<io::Token> *tokens, CompletionContext *completion
   );
 
+  void token(io::Token::Kind);
+  void end_token();
+
   char peek(uint16_t = 0); // == \0 if at eof.
   std::string_view peek_str(uint16_t = UINT16_MAX);
   void advance(uint16_t = 1);

include/internal/syntax/miniparser.h

@@ -0,0 +1,21 @@
+#pragma once
+
+#include "decl.h"
+
+namespace bed::internal::syntax {
+struct MiniParser {
+  Language ⟨
+  void *start_state;
+  std::vector<std::pair<void *, std::vector<io::Token>>> lines;
+
+  explicit MiniParser(Language &lang, vase::Shard *vase, void *initial_state);
+  ~MiniParser();
+
+  MiniParser(const MiniParser &) = delete;
+  MiniParser &operator=(const MiniParser &) = delete;
+
+  void dirty(vase::Shard *vase, uint64_t start, uint64_t count);
+  void insert(vase::Shard *vase, uint64_t start, uint64_t count);
+  void erase(vase::Shard *vase, uint64_t start, uint64_t count);
+};
+} // namespace bed::internal::syntax

include/internal/ui/text_mode.h

@@ -1,23 +1,31 @@
 #pragma once
 
-#include "definitions.h"
+#include "internal/syntax/miniparser.h"
 #include "pch.h"
 
-namespace bed::internal::ui {
+namespace bed::internal::ui::text_mode {
 struct TextMode {
-  std::string cmd;
-  uint16_t cursor;
+  struct Row {
+    uint64_t start;
+    uint64_t length;
+  };
+  using Lines = std::vector<Row>;
+  vase::Shard *vase;
+  vase::Point cursor;
+  std::optional<syntax::MiniParser> parser;
+  std::vector<Lines> lines;
   uint16_t start;
   uint16_t height;
   uint16_t term_height;
   uint16_t term_width;
   BEd &bed;
 
-  TextMode(BEd &);
+  TextMode(BEd &, vase::Shard *, syntax::Language *, void *);
   std::pair<vase::Shard *, bool> run();
   std::pair<vase::Shard *, bool> run_pipe();
   std::pair<vase::Shard *, bool> run_terminal();
   void grow();
   void redraw();
+  void layout_lines();
 };
-} // namespace bed::internal::ui
+} // namespace bed::internal::ui::text_mode

include/internal/vase/vase.h

@@ -41,7 +41,7 @@ struct ReplacePart {
 
 uint64_t offset_of(Shard *root, uint64_t line);
 uint64_t offset_of(Shard *root, Point point);
-Point point_of(Shard *root, uint64_t offset);
+Point eof_point(Shard *root);
 
 std::string to_string(Shard *root);
 std::string to_string(Shard *root, Range range);