prog8/compiler/test/TestSubroutines.kt

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package prog8tests.compiler
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import io.kotest.assertions.withClue
import io.kotest.core.spec.style.FunSpec
import io.kotest.matchers.shouldBe
import io.kotest.matchers.string.shouldContain
import io.kotest.matchers.types.instanceOf
import prog8.ast.IFunctionCall
import prog8.ast.expressions.IdentifierReference
import prog8.ast.statements.*
import prog8.code.core.BaseDataType
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import prog8.code.core.DataType
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import prog8.code.target.C64Target
import prog8.compiler.astprocessing.hasRtsInAsm
import prog8tests.helpers.ErrorReporterForTests
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import prog8tests.helpers.compileText
class TestSubroutines: FunSpec({
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test("string arg for byte param proper errormessage and subroutineptr in array too") {
val text="""
main {
sub func(ubyte bb) {
bb++
}
sub start() {
func("abc")
uword[] commands = ["abc", 1.234]
}
}"""
val errors = ErrorReporterForTests()
compileText(C64Target(), false, text, writeAssembly = true, errors=errors) shouldBe null
errors.errors.size shouldBe 2
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errors.errors[0] shouldContain "type mismatch, was: str expected: ubyte"
errors.errors[1] shouldContain "initialisation value has incompatible type"
}
test("stringParameter") {
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val text = """
main {
sub start() {
str text = "test"
asmfunc("text")
asmfunc(text)
asmfunc($2000)
func("text")
func(text)
func($2000)
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}
asmsub asmfunc(str thing @AY) {
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}
sub func(str thing) {
uword t2 = thing as uword
asmfunc(thing)
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}
}
"""
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val result = compileText(C64Target(), false, text, writeAssembly = false)!!
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val module = result.compilerAst.toplevelModule
val mainBlock = module.statements.single() as Block
val asmfunc = mainBlock.statements.filterIsInstance<Subroutine>().single { it.name=="asmfunc"}
val func = mainBlock.statements.filterIsInstance<Subroutine>().single { it.name=="func"}
asmfunc.isAsmSubroutine shouldBe true
asmfunc.statements.isEmpty() shouldBe true
func.isAsmSubroutine shouldBe false
withClue("str param for subroutines should be changed into UWORD") {
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asmfunc.parameters.single().type shouldBe DataType.forDt(BaseDataType.UWORD)
func.parameters.single().type shouldBe DataType.forDt(BaseDataType.UWORD)
func.statements.size shouldBe 4
val paramvar = func.statements[0] as VarDecl
paramvar.name shouldBe "thing"
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paramvar.datatype shouldBe DataType.forDt(BaseDataType.UWORD)
}
val assign = func.statements[2] as Assignment
assign.target.identifier!!.nameInSource shouldBe listOf("t2")
withClue("str param in function body should have been transformed into just uword assignment") {
assign.value shouldBe instanceOf<IdentifierReference>()
}
val call = func.statements[3] as FunctionCallStatement
call.target.nameInSource.single() shouldBe "asmfunc"
withClue("str param in function body should not be transformed by normal compiler steps") {
call.args.single() shouldBe instanceOf<IdentifierReference>()
}
(call.args.single() as IdentifierReference).nameInSource.single() shouldBe "thing"
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}
test("stringParameterAsmGen") {
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val text = """
main {
sub start() {
str text = "test"
asmfunc("text")
asmfunc(text)
asmfunc($2000)
func("text")
func(text)
func($2000)
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emptysub()
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}
asmsub asmfunc(str thing @AY) {
}
sub func(str thing) {
uword t2 = thing as uword
asmfunc(thing)
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}
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sub emptysub() {
}
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}
"""
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val result = compileText(C64Target(), false, text, writeAssembly = true)!!
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val module = result.compilerAst.toplevelModule
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val mainBlock = module.statements.single() as Block
val asmfunc = mainBlock.statements.filterIsInstance<Subroutine>().single { it.name=="asmfunc"}
val func = mainBlock.statements.filterIsInstance<Subroutine>().single { it.name=="func"}
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val emptysub = mainBlock.statements.filterIsInstance<Subroutine>().single { it.name=="emptysub"}
asmfunc.isAsmSubroutine shouldBe true
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asmfunc.statements.single() shouldBe instanceOf<InlineAssembly>()
(asmfunc.statements.single() as InlineAssembly).assembly.trim() shouldBe "rts"
asmfunc.hasRtsInAsm() shouldBe true
func.isAsmSubroutine shouldBe false
withClue("str param should have been changed to uword") {
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asmfunc.parameters.single().type shouldBe DataType.forDt(BaseDataType.UWORD)
func.parameters.single().type shouldBe DataType.forDt(BaseDataType.UWORD)
}
func.statements.size shouldBe 5
func.statements[4] shouldBe instanceOf<Return>()
val paramvar = func.statements[0] as VarDecl
paramvar.name shouldBe "thing"
withClue("pre-asmgen should have changed str to uword type") {
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paramvar.datatype shouldBe DataType.forDt(BaseDataType.UWORD)
}
val assign = func.statements[2] as Assignment
assign.target.identifier!!.nameInSource shouldBe listOf("t2")
withClue("str param in function body should be treated as plain uword before asmgen") {
assign.value shouldBe instanceOf<IdentifierReference>()
}
(assign.value as IdentifierReference).nameInSource.single() shouldBe "thing"
val call = func.statements[3] as FunctionCallStatement
call.target.nameInSource.single() shouldBe "asmfunc"
withClue("str param in function body should be treated as plain uword and not been transformed") {
call.args.single() shouldBe instanceOf<IdentifierReference>()
}
(call.args.single() as IdentifierReference).nameInSource.single() shouldBe "thing"
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emptysub.statements.size shouldBe 1
emptysub.statements.single() shouldBe instanceOf<Return>()
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}
test("ubyte[] array parameters") {
val text = """
main {
sub start() {
ubyte[] array = [1,2,3]
asmfunc(array)
asmfunc($2000)
asmfunc("zzzz")
func(array)
func($2000)
func("zzzz")
}
asmsub asmfunc(ubyte[] thing @AY) {
}
sub func(ubyte[] thing) {
}
}
"""
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val result = compileText(C64Target(), false, text, writeAssembly = false)!!
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val module = result.compilerAst.toplevelModule
val mainBlock = module.statements.single() as Block
val asmfunc = mainBlock.statements.filterIsInstance<Subroutine>().single { it.name=="asmfunc"}
val func = mainBlock.statements.filterIsInstance<Subroutine>().single { it.name=="func"}
withClue("ubyte array param should have been replaced by UWORD pointer") {
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asmfunc.parameters.single().type shouldBe DataType.forDt(BaseDataType.UWORD)
func.parameters.single().type shouldBe DataType.forDt(BaseDataType.UWORD)
}
}
test("not ubyte[] array parameters not allowed") {
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val text = """
main {
sub start() {
}
asmsub func1(uword[] thing @AY) {
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}
sub func(byte[] thing) {
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}
}
"""
val errors = ErrorReporterForTests()
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compileText(C64Target(), false, text, writeAssembly = false, errors=errors) shouldBe null
errors.errors.size shouldBe 2
errors.errors[0] shouldContain "pass-by-reference type can't be used"
errors.errors[1] shouldContain "pass-by-reference type can't be used"
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}
test("invalid number of args check on normal subroutine") {
val text="""
main {
sub thing(ubyte a1, ubyte a2) {
}
sub start() {
thing(1)
thing(1,2)
thing(1,2,3)
}
}
"""
val errors = ErrorReporterForTests()
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compileText(C64Target(), false, text, writeAssembly = false, errors=errors) shouldBe null
errors.errors.size shouldBe 2
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errors.errors[0] shouldContain "7:25: invalid number of arguments"
errors.errors[1] shouldContain "9:25: invalid number of arguments"
}
test("invalid number of args check on asm subroutine") {
val text="""
main {
asmsub thing(ubyte a1 @A, ubyte a2 @Y) {
}
sub start() {
thing(1)
thing(1,2)
thing(1,2,3)
}
}
"""
val errors = ErrorReporterForTests()
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compileText(C64Target(), false, text, writeAssembly = false, errors=errors) shouldBe null
errors.errors.size shouldBe 2
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errors.errors[0] shouldContain "7:25: invalid number of arguments"
errors.errors[1] shouldContain "9:25: invalid number of arguments"
}
test("invalid number of args check on call to label and builtin func") {
val text="""
main {
label:
sub start() {
label()
label(1)
void cmp(22,44)
void cmp(11)
}
}
"""
val errors = ErrorReporterForTests()
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compileText(C64Target(), false, text, writeAssembly = false, errors=errors) shouldBe null
errors.errors.size shouldBe 2
errors.errors[0] shouldContain "cannot use arguments"
errors.errors[1] shouldContain "invalid number of arguments"
}
test("fallthrough prevented") {
val text = """
main {
sub start() {
func(1, 2, 3)
sub func(ubyte a, ubyte b, ubyte c) {
a++
}
}
}
"""
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val result = compileText(C64Target(), false, text, writeAssembly = true)!!
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val stmts = result.compilerAst.entrypoint.statements
stmts.last() shouldBe instanceOf<Subroutine>()
stmts.dropLast(1).last() shouldBe instanceOf<Return>() // this prevents the fallthrough
stmts.dropLast(2).last() shouldBe instanceOf<IFunctionCall>()
}
})