1 files changed, 56 insertions, 0 deletions
diff --git a/node.h b/node.h
new file mode 100644
index 0000000..81d0b26
--- /dev/null
+++ b/node.h
@@ -0,0 +1,56 @@
+#pragma once
+
+#include "type.h"
+
+
+enum node_type {
+	N_LIST,  // [head] [tail]
+	N_LIST_END,  // --
+	N_BLOCK,  // [body]
+	N_VAR_DECL_INIT,  // rtype name [value]
+	N_VAR_DECL,  // rtype name
+	N_FUNC_DECL,  // rtype name [params] [body]
+	N_IF,  // [cond] [body] [else-body]
+	N_WHILE,  // [cond] [body]
+	N_RETURN,  // [value]
+	N_NUM,  // value
+	N_VAR,  // name
+	N_BINOP,  // [left] oper [right]
+	N_UNOP,  // oper [arg]
+	N_CALL,  // name [args]
+};
+
+enum operator {
+	// binary
+	OP_ADD, OP_SUB, OP_MUL, OP_DIV, OP_MOD,
+	OP_EQ, OP_NEQ, OP_LT, OP_GT, OP_LEQ, OP_GEQ,
+	OP_AND, OP_OR,
+	OP_ASSIGN,
+	// unary
+	OP_NEG, OP_NOT, OP_DEREF, OP_ADDROF,
+};
+
+struct node {
+	enum node_type type;
+	struct node *child1, *child2, *child3;
+	struct type *rtype;
+	char *name;
+	int value;
+	enum operator oper;
+};
+
+
+struct node* node_make_0(enum node_type type);
+struct node* node_make_1(enum node_type type, struct node *c1);
+struct node* node_make_2(enum node_type type, struct node *c1, struct node *c2);
+struct node* node_make_3(enum node_type type, struct node *c1, struct node *c2, struct node *c3);
+
+__attribute__((sentinel))
+struct node* node_make_list_(struct node *first, ...);
+#define node_make_list(...) node_make_list_(__VA_ARGS__, NULL)
+
+int node_list_length(struct node *node);
+
+void node_delete_recursive(struct node *node);
+
+void node_print(const struct node *node, FILE *f, int indent);