From e28741f97d98ea84347a28100964c777830e5f74 Mon Sep 17 00:00:00 2001
From: Kelvin Sherlock <ksherlock@gmail.com>
Date: Fri, 29 Jan 2016 22:21:51 -0500
Subject: [PATCH] fix command.h

---
 command.h | 72 +++++++++++++++++++++++++++++++++++++++++++++++--------
 1 file changed, 62 insertions(+), 10 deletions(-)

diff --git a/command.h b/command.h
index 5876b7b..95e9171 100644
--- a/command.h
+++ b/command.h
@@ -1,44 +1,96 @@
+#ifndef __command_h__
+#define __command_h__
+
 #include <memory>
 #include <vector>
 #include <array>
+#include "mpw-shell-grammar.h"
 
 typedef std::unique_ptr<struct command> command_ptr;
 typedef std::vector<command_ptr> command_ptr_vector;
 typedef std::array<command_ptr, 2> command_ptr_pair;
 
-struct command {
-	enum {
 
-	};
-	int type;
+struct command {
+
+	command(int t = 0) : type(t)
+	{}
+
+	int type = 0;
 	virtual ~command();
-	virtual int run();
+	virtual int execute();
 };
 
 struct simple_command  : public command {
+	template<class S>
+	simple_command(S &&s) : command(COMMAND), text(std::forward<S>(s))
+	{}
+
 	std::string text;
 };
 
 struct binary_command : public command {
+
+	binary_command(int t, command_ptr &&a, command_ptr &&b) :
+		command(t), children({{std::move(a), std::move(b)}})
+	{}
+
 	command_ptr_pair children;
 };
 
 struct or_command : public binary_command {
+	or_command(command_ptr &&a, command_ptr &&b) :
+		binary_command(PIPE_PIPE, std::move(a), std::move(b)) 
+	{}
 
 };
 
 struct and_command : public binary_command {
-
+	and_command(command_ptr &&a, command_ptr &&b) :
+		binary_command(AMP_AMP, std::move(a), std::move(b)) 
+	{}
 };
 
-struct begin_command : public command {
+struct vector_command : public command {
+	vector_command(int t, command_ptr_vector &&v) : command(t), children(std::move(v))
+	{}
+
 	command_ptr_vector children;
+};
+
+struct begin_command : public vector_command {
+	template<class S>
+	begin_command(int t, command_ptr_vector &&v, S &&s) :
+		vector_command(t, std::move(v)), end(std::forward<S>(s))
+	{}
+
 	std::string end; 
 };
 
 struct if_command : public command {
-	std::string begin;
-	command_ptr_vector children;
-	command_ptr_vector else_clause;
+
+	typedef std::vector<struct if_else_clause> clause_vector_type;
+
+	template<class S>
+	if_command(clause_vector_type &&v, S &&s) :
+		command(IF), clauses(std::move(v)), end(std::forward<S>(s))
+	{}
+
+
+	clause_vector_type clauses;
 	std::string end;
 };
+
+struct if_else_clause : public vector_command {
+
+	template<class S>
+	if_else_clause(int t, command_ptr_vector &&v, S &&s) :
+		vector_command(t, std::move(v)), clause(std::forward<S>(s))
+	{}
+
+	std::string clause;
+
+	bool evaluate();
+};
+
+#endif
\ No newline at end of file