module scanner

import os

struct TestStruct {
	test	string
}

fn (mut t TestStruct) test_struct() {
	assert @STRUCT == 'TestStruct'
}

fn (mut t TestStruct) test_struct_w_return() string {
	assert @STRUCT == 'TestStruct'
	return t.test
}

fn (mut t TestStruct) test_struct_w_high_order(cb fn(int)string) string {
	assert @STRUCT == 'TestStruct'
	return 'test'+cb(2)
}

struct TestFn { }

fn (mut t TestFn) tst_1() {
	assert @FN == 'tst_1'
}

fn (mut t TestFn) tst_2(cb fn(int)) {
	assert @FN == 'tst_2'
	cb(1)
}

fn fn_name_mod_level() {
	assert @FN == 'fn_name_mod_level'
}

fn fn_name_mod_level_high_order(cb fn(int)) {
	assert @FN == 'fn_name_mod_level_high_order'
	cb(1)
}

fn test_at_file() {
	// Test @FILE
	f := os.file_name(@FILE)
	assert f == 'scanner_at_literals_test.v'
}

fn test_at_fn() {
	// Test @FN
	assert @FN == 'test_at_fn'

	fn_name_mod_level()
	fn_name_mod_level_high_order(fn(i int){
		t := i + 1
		assert t == 2
	})

	mut tfn := TestFn{}
	tfn.tst_1()
	tfn.tst_2(fn(i int){
		t := i + 1
		assert t == 2
	})
}

fn test_at_mod() {
	// Test @MOD
	assert @MOD == 'scanner'
}

fn test_at_struct() {
	// Test @STRUCT
	assert @STRUCT == ''
	mut ts := TestStruct { test: "test" }
	ts.test_struct()
	r1 := ts.test_struct_w_return()
	r2 := ts.test_struct_w_high_order(fn(i int)string{
		assert @STRUCT == ''
		return i.str()
	})
	assert r1 == 'test'
	assert r2 == 'test2'
}

fn test_vmod_file() {
	content := @VMOD_FILE
	assert content.len > 0
	assert content.contains('Module {')
	assert content.contains('name:')
	assert content.contains('version:')
	assert content.contains('description:')
}