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#
# Test of function calls
#
# Copyright © 2022-2024 Samuel Lidén Borell <samuel@kodafritt.se>
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
#

func test_function_calls()
{
    f_void()
    f_int_void(123)
    f_bool_void(false)
    f_intbool_void(-456, true)

    # Using return values
    bool b1 = f_bool()
    while not f_int_bool(123) { }
    do {
        if f_bool_bool(false) { }
    } while not f_intbool_bool(-456, true)
    assert b1

    # Discarding return values
    f_bool()
    f_int_bool(123)
    f_bool_bool(false)
    f_intbool_bool(-456, true)
}

func test_method_calls_byvalue()
{
    var FuncObj fo = .init()
    # TODO check the fields once struct returns are implemented
    fo.x = 678
    fo.b = true

    fo.f_void()
    fo.f_int_void(123)
    fo.f_bool_void(false)
    fo.f_intbool_void(-456, true)

    # Using return values
    bool b1 = fo.f_bool()
    while not fo.f_int_bool(123) { }
    do {
        if fo.f_bool_bool(false) { }
    } while not fo.f_intbool_bool(-456, true)
    assert b1

    # Discarding return values
    fo.f_bool()
    fo.f_int_bool(123)
    fo.f_bool_bool(false)
    fo.f_intbool_bool(-456, true)
}

func test_method_calls_byref()
{
    var FuncObj the_fo = .init()
    # TODO check the fields once struct returns are implemented
    the_fo.x = 678
    the_fo.b = true

    ref var FuncObj fr = refto the_fo
    fr.f_void()
    fr.f_int_void(123)
    fr.f_bool_void(false)
    fr.f_intbool_void(-456, true)

    # Using return values
    bool b1 = fr.f_bool()
    while not fr.f_int_bool(123) { }
    do {
        if fr.f_bool_bool(false) { }
    } while not fr.f_intbool_bool(-456, true)

    # Discarding return values
    fr.f_bool()
    fr.f_int_bool(123)
    fr.f_bool_bool(false)
    fr.f_intbool_bool(-456, true)
}

func f_void() { }
func f_int_void(int x) { assert x == 123 }
func f_bool_void(bool b) { assert not b }
func f_intbool_void(int x, bool b)
{
    assert x == -456
    assert b
}

func f_bool() -> bool { return true }
func f_int_bool(int x) -> bool
{
    assert x == 123
    return true
}
func f_bool_bool(bool b) -> bool
{
    assert not b
    return true
}
func f_intbool_bool(int x, bool b) -> bool
{
    assert x == -456
    assert b
    return true
}

type FuncObj = struct {
    int x
    bool b
}

func .init() -> FuncObj { return (.x=123, .b=true) }

func FuncObj.f_void() { }
func FuncObj.f_int_void(int x) { assert x == 123 }
func FuncObj.f_bool_void(bool b) { assert not b }
func FuncObj.f_intbool_void(int x, bool b)
{
    assert x == -456
    assert b
}

func FuncObj.f_bool() -> bool { return true }
func FuncObj.f_int_bool(int x) -> bool
{
    assert x == 123
    return true
}
func FuncObj.f_bool_bool(bool b) -> bool
{
    assert not b
    return true
}
func FuncObj.f_intbool_bool(int x, bool b) -> bool
{
    assert x == -456
    assert b
    return true
}

func FuncObj.access_fields(int value)
{
    if this.b {
        this.x += value * this.x
    } else {
        this.b = (this.x == value)
        assert this.x == value
        this.b = true

        var FuncObj obj = (.x=111, .b=true)
        assert obj.x == 111
        obj.b = true
        obj.b = (value == 111)
        obj.b = (obj.x == 222)
        obj.b = (obj.x == value)
        obj.b = (this.x == value)
        this.b = (obj.x == value)
    }
}


func funccalls_test()
{
    test_function_calls()
    test_method_calls_byvalue()
    test_method_calls_byref()
}