Added assignment for nasm preassembler thing

1 files changed, 53 insertions, 0 deletions

diff --git a/sem1/osc/miniproject/cnasm/ast.h b/sem1/osc/miniproject/cnasm/ast.h
new file mode 100644
index 0000000..61a8f4f
--- /dev/null
+++ b/sem1/osc/miniproject/cnasm/ast.h
@@ -0,0 +1,53 @@
+#ifndef AST_HEADER
+#define AST_HEADER
+
+#include <stdbool.h>
+#include <stdint.h>
+
+#define CEQ 0x10
+#define CNEQ CEQ ^ 0x80
+#define CGT 0x20
+#define CLT 0x30
+#define CLEQ CGT ^ 0x80
+#define CGEQ CLT ^ 0x80
+
+enum ntype { TSTM_LIST, TIF, TFOR, TIDENT, TWHILE};
+
+typedef struct cond {
+	uint8_t cmp;
+	char *a;
+	char *b;
+} cond_t;
+
+typedef struct ast_node {
+	enum ntype t;
+	// Dependent on type
+	union {
+		struct {
+			cond_t *condition;
+			struct ast_node *iftrue;
+			struct ast_node *iffalse;
+		} flowctrl;
+		struct {
+			cond_t *condition;
+			char *pre;
+			char *inc;
+			struct ast_node *stuff;
+		} forloop;
+		char *ident;
+		struct {
+			struct ast_node *children[2];
+		} list;
+	};
+} ast_node_t;
+
+ast_node_t *insert_ctrl(enum ntype t, cond_t *c, ast_node_t *iftrue, ast_node_t *iffalse);
+ast_node_t *insert_stm(ast_node_t *stm, ast_node_t *stm_list);
+ast_node_t *insert_ident(char *ident);
+ast_node_t *insert_for(char *pre, cond_t *c, char *inc, ast_node_t *stuff);
+
+cond_t *insert_cond(uint8_t cmp, char *a, char *b);
+
+void node_print(ast_node_t *node);
+
+#endif