refactor eval

1 files changed, 61 insertions, 0 deletions

diff --git a/src/eval/eval.cc b/src/eval/eval.cc
new file mode 100644
index 0000000..83eccd7
--- /dev/null
+++ b/src/eval/eval.cc
@@ -0,0 +1,61 @@
+#include "eval.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <ctype.h>
+#include <signal.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <errno.h>
+#include <iostream>
+#include <vector>
+#include <string>
+
+#include "magic_enum/magic_enum.hpp"
+
+#include "error.h"
+#include "lang_analysis/lexer_class.h"
+#include "lang_analysis/ast.h"
+#include "lang_analysis/token.h"
+#include "handler.h"
+
+using namespace std;
+
+namespace ov4
+{
+    
+/* 
+ * eval - Evaluate the command line that the user has just typed in
+ * 
+ * If the user has requested a built-in command (quit, jobs, bg or fg)
+ * then execute it immediately. Otherwise, fork a child process and
+ * run the job in the context of the child. If the job is running in
+ * the foreground, wait for it to terminate and then return.  Note:
+ * each child process must have a unique process group ID so that our
+ * background children don't receive SIGINT (SIGTSTP) from the kernel
+ * when we type ctrl-c (ctrl-z) at the keyboard.  
+*/
+void eval(char *raw_input) 
+{
+    string s = raw_input;
+    T_lexer lexer_instance;
+
+    try
+    {
+        lexer_instance.tokenizer(s);
+        lexer_instance.parse(0, lexer_instance.token.size(), lexer_instance.alloc_ast());
+    }
+    catch(const T_error &e)
+    {
+        cerr << "Error: " << magic_enum::enum_name(e.code) << endl;
+        cerr << "what: " << e.what() << endl;
+        return;
+    }
+
+    eval_tree_cd(0, lexer_instance, false);
+    return;
+}
+
+}