#include "compile-node.h"

enum bshell_status var_load(
	struct compile_ctx *ctx,
	struct compile_value *value)
{
	struct bshell_var_ast_node *var
		= (struct bshell_var_ast_node *)value->v_node;
	unsigned long index = bshell_scriptblock_get_string(
		ctx->c_block,
		var->n_ident->tok_str);
	if (index == POOL_INDEX_INVALID) {
		return BSHELL_ERR_NO_MEMORY;
	}

	bshell_scriptblock_push_instruction(
		ctx->c_block,
		BSHELL_OPCODE_LDLOCAL,
		index);
	return BSHELL_SUCCESS;
}

enum bshell_status var_store(
	struct compile_ctx *ctx,
	struct compile_value *value)
{
	struct bshell_var_ast_node *var
		= (struct bshell_var_ast_node *)value->v_node;
	unsigned long index = bshell_scriptblock_get_string(
		ctx->c_block,
		var->n_ident->tok_str);
	if (index == POOL_INDEX_INVALID) {
		return BSHELL_ERR_NO_MEMORY;
	}

	bshell_scriptblock_push_instruction(
		ctx->c_block,
		BSHELL_OPCODE_STLOCAL,
		index);
	return BSHELL_SUCCESS;
}

static const struct compile_value_type var_type = {
	.v_load = var_load,
	.v_store = var_store,
};

struct compile_result compile_var(
	struct compile_ctx *ctx,
	struct bshell_ast_node *src)
{
	compile_push_value(ctx, &var_type, src);
	return COMPILE_OK(0);
}