prog8/compiler/test/TestPipes.kt

package prog8tests

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.expressions.FunctionCallExpr
import prog8.ast.expressions.IdentifierReference
import prog8.ast.statements.Pipe
import prog8.codegen.target.C64Target
import prog8tests.helpers.ErrorReporterForTests
import prog8tests.helpers.assertFailure
import prog8tests.helpers.assertSuccess
import prog8tests.helpers.compileText


class TestPipes: FunSpec({

    test("correct pipes") {
        val text = """
            %import floats
            %import textio
            
            main {
                sub start() {

                    1.234 |> addfloat 
                          |> floats.print_f
                    
                    9999 |> addword
                         |> txt.print_uw
                         
                }

                sub addfloat(float fl) -> float {
                    return fl+2.22
                }
                sub addword(uword ww) -> uword {
                    return ww+2222
                }
            }
        """
        val result = compileText(C64Target, true, text, writeAssembly = true).assertSuccess()
        val stmts = result.program.entrypoint.statements
        stmts.size shouldBe 3
        val pipef = stmts[0] as Pipe
        pipef.expressions.size shouldBe 2
        pipef.expressions[0] shouldBe instanceOf<FunctionCallExpr>()
        pipef.expressions[1] shouldBe instanceOf<IdentifierReference>()

        val pipew = stmts[1] as Pipe
        pipew.expressions.size shouldBe 2
        pipew.expressions[0] shouldBe instanceOf<FunctionCallExpr>()
        pipew.expressions[1] shouldBe instanceOf<IdentifierReference>()
    }

    test("incorrect type in pipe") {
        val text = """
            %option enable_floats
            
            main {
                sub start() {

                    1.234 |> addfloat 
                          |> addword |> addword
                }

                sub addfloat(float fl) -> float {
                    return fl+2.22
                }
                sub addword(uword ww) -> uword {
                    return ww+2222
                }
            }
        """
        val errors = ErrorReporterForTests()
        compileText(C64Target, false, text, errors=errors).assertFailure()
        errors.errors.size shouldBe 1
        errors.errors[0] shouldContain "incompatible"
    }

})