Add 'xo-reader/' from commit 'c46c0f1cc4'

git-subtree-dir: xo-reader
git-subtree-mainline: dacdeb2cd7
git-subtree-split: c46c0f1cc4

xo-reader/include/xo/reader/exprseq_xs.hpp

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+/** @file exprseq_xs.hpp
+ *
+ *  Author: Roland Conybeare
+ **/
+
+#pragma once
+
+#include "exprstate.hpp"
+//#include <cstdint>
+
+namespace xo {
+    namespace scm {
+        /** @class exprseq_xs
+         *  @brief parsing state-machine for top-level expression sequence
+         *
+         **/
+        class exprseq_xs : public exprstate {
+        public:
+            exprseq_xs();
+
+            static void start(parserstatemachine * p_psm);
+
+        public:
+            // ----- token input methods -----
+
+            virtual void on_def_token(const token_type & tk,
+                                      parserstatemachine * p_psm) override;
+            virtual void on_symbol_token(const token_type & tk,
+                                         parserstatemachine * p_psm) override;
+
+            // ----- victory methods -----
+
+            virtual void on_typedescr(TypeDescr td,
+                                      parserstatemachine * p_psm) override;
+            virtual void on_expr(ref::brw<Expression> expr,
+                                 parserstatemachine * p_psm) override;
+
+        private:
+            static std::unique_ptr<exprseq_xs> make();
+        };
+    } /*namespace scm*/
+} /*namespace xo*/
+
+
+/** end exprseq_xs.hpp **/