7 files changed, 82 insertions, 0 deletions
diff --git a/comp/lucas-standen-NEA/code/execution/Makefile b/comp/lucas-standen-NEA/code/execution/Makefile
index e69de29..405f9de 100644
--- a/comp/lucas-standen-NEA/code/execution/Makefile
+++ b/comp/lucas-standen-NEA/code/execution/Makefile
@@ -0,0 +1,6 @@
+all: exec builtin
+	$(info done execution!)
+exec: exec.c builtin
+	cc exec.c builtin.o ../tokenizer/tokenizer.o ../global/util.o -o exec -ggdb
+builtin: builtin.c
+	cc builtin.c -c -o builtin.o -ggdb
diff --git a/comp/lucas-standen-NEA/code/execution/builtin.c b/comp/lucas-standen-NEA/code/execution/builtin.c
new file mode 100644
index 0000000..df3ca03
--- /dev/null
+++ b/comp/lucas-standen-NEA/code/execution/builtin.c
@@ -0,0 +1,45 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include "../global/types.h"
+#include "../global/util.h"
+
+#define MAXARGS 8
+
+void *doCall(ast_node *node){
+	builtInFuncs id = node->func->builtInFunc;
+	for (int i = 0; i < MAXARGS; i++){
+		if (node->args[i] != NULL){
+			node->literalArgs[i] = doCall(node->args[i]);
+		}
+	}
+
+	char *str = CheckedMalloc(20);
+	switch (id){
+		case ADD:
+			snprintf(str, 20, "%d", atoi(node->literalArgs[0]) + atoi(node->literalArgs[1]));
+			return str;
+			break;
+		case SUB:
+			snprintf(str, 20, "%d", atoi(node->literalArgs[0]) - atoi(node->literalArgs[1]));
+			return str;
+			break;
+		case DIV:
+			snprintf(str, 20, "%d", atoi(node->literalArgs[0]) / atoi(node->literalArgs[1]));
+			return str;
+			break;
+		case MUL:
+			snprintf(str, 20, "%d", atoi(node->literalArgs[0]) * atoi(node->literalArgs[1]));
+			return str;
+			break;
+
+		case WRITE:
+			fputs(node->literalArgs[0], stdout);
+			break;
+
+		case EXIT:
+			int returnValue = atoi(node->literalArgs[0]);
+			CheckedFreeALL();
+			exit(returnValue);
+			break;
+	}
+}
diff --git a/comp/lucas-standen-NEA/code/execution/builtin.h b/comp/lucas-standen-NEA/code/execution/builtin.h
new file mode 100644
index 0000000..46ffde5
--- /dev/null
+++ b/comp/lucas-standen-NEA/code/execution/builtin.h
@@ -0,0 +1,7 @@
+#include <stdlib.h>
+#include "../global/types.h"
+#include "../global/util.h"
+
+#define MAXARGS 8
+
+void *doCall(ast_node *node);
diff --git a/comp/lucas-standen-NEA/code/execution/exec b/comp/lucas-standen-NEA/code/execution/exec
new file mode 100755
index 0000000..ca6eb33
--- /dev/null
+++ b/comp/lucas-standen-NEA/code/execution/exec
diff --git a/comp/lucas-standen-NEA/code/execution/exec.c b/comp/lucas-standen-NEA/code/execution/exec.c
index e69de29..fb85d3f 100644
--- a/comp/lucas-standen-NEA/code/execution/exec.c
+++ b/comp/lucas-standen-NEA/code/execution/exec.c
@@ -0,0 +1,24 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "./builtin.h"
+
+#include "../global/util.h"
+
+#include "../tokenizer/tokenizer.h"
+
+int main(){
+	char *sample = "(write (* 2 5))"; 
+	ast_node *root = tokenize(sample);
+	doCall(root);	
+	sample = "(write \n)";
+	root = tokenize(sample);
+	doCall(root);	
+	sample = "(exit 0)";
+	root = tokenize(sample);
+	doCall(root);	
+
+	CheckedFreeALL();
+	
+	return 0;
+}
diff --git a/comp/lucas-standen-NEA/code/execution/types.c b/comp/lucas-standen-NEA/code/execution/types.c
deleted file mode 100644
index e69de29..0000000
--- a/comp/lucas-standen-NEA/code/execution/types.c
+++ /dev/null
diff --git a/comp/lucas-standen-NEA/code/execution/types.h b/comp/lucas-standen-NEA/code/execution/types.h
deleted file mode 100644
index e69de29..0000000
--- a/comp/lucas-standen-NEA/code/execution/types.h
+++ /dev/null