#ifndef IR_H
#define IR_H

#include "utils.h"
#include "parser.h"

struct _ir_node;
struct symbol_def {
	struct _ir_node *node;
	bool is_lvalue;
};

typedef struct { char *key; struct symbol_def *value; } symbol_table;

typedef enum {
	OC_START,
	OC_ADD,
	OC_SUB,
	OC_MUL,
	OC_DIV,
	OC_MOD,
	OC_BAND,
	OC_BOR,
	OC_BXOR,
	OC_NEG,
	OC_EQ,

	OC_CONST_INT,
	OC_CONST_FLOAT,
	OC_VOID,

	OC_FRAME_PTR,
	OC_ADDR,

	OC_STORE,
	OC_LOAD,
	
	OC_REGION,
	OC_PHI,

	OC_IF,
	OC_PROJ,

	OC_STOP,
	OC_RETURN,

	OC_SCOPE,
} opcode;

typedef struct _ir_node {
	opcode code;
	usize id;
	struct _ir_node **in;
	struct _ir_node **out;
	union {
		i64 const_int;
		f64 const_float;
		symbol_table **symbol_tables;
		char *start_name;
	} data;
} ir_node;

void ir_build(ast_node *ast);

#endif