Add gen_code src files, with gen_label func implemented

1 files changed, 45 insertions, 0 deletions

diff --git a/gen_code.c b/gen_code.c
new file mode 100644
index 0000000..7471e8f
--- /dev/null
+++ b/gen_code.c
@@ -0,0 +1,45 @@
+#include "gen_code.h"
+#include "pc.h"
+
+int gen_label(t)
+ptree *t;
+{
+	int tmp;
+
+	if (!(t->l && t->r))
+		return 0;
+
+	if (t->l) {
+		tmp = gen_label(t->l);
+		t->l->label = (!tmp ? 1 : tmp);
+	} else
+		yyerror("GEN_LABEL: left child NULL, shouldn't happen!\n");
+	
+
+	if (t->r)
+		t->r->label = gen_label(t->r);
+	else
+		t->r->label = 0;
+
+
+
+
+	if (t->r->label == t->l->label) {
+		return 1 + t->l->label;
+	} else {
+		return t->r->label > t->l->label ? t->r->label : t->l->label;
+	}
+
+}
+
+
+void gen_code(t)
+ptree *t;
+{
+	/*Test gen_label*/
+	if (t->type == ASSIGNOP){
+		gen_label(t->r);
+		print_tree(t->r);
+	}
+}
+