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I'm getting `java.lang.IllegalStateException: Coul...
# compose
z
I'm getting 
java.lang.IllegalStateException: Couldn't find composer parameter
, any ideas? (stack trace in thread)
Copy code
java.lang.IllegalStateException: Couldn't find composer parameter
   at androidx.compose.plugins.kotlin.compiler.lower.ComposableCallTransformer.nearestComposer(ComposableCallTransformer.kt:535)
   at androidx.compose.plugins.kotlin.compiler.lower.ComposableCallTransformer.irComposableExpr(ComposableCallTransformer.kt:374)
   at androidx.compose.plugins.kotlin.compiler.lower.ComposableCallTransformer.visitCall(ComposableCallTransformer.kt:150)
   at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.visitCall(IrElementTransformerVoid.kt:173)
   at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.visitCall(IrElementTransformerVoid.kt:24)
   at org.jetbrains.kotlin.ir.expressions.impl.IrCallImpl.accept(IrCallImpl.kt:89)
   at org.jetbrains.kotlin.ir.expressions.IrExpression$DefaultImpls.transform(IrExpression.kt:28)
   at org.jetbrains.kotlin.ir.expressions.impl.IrExpressionBase.transform(IrExpressionBase.kt:24)
   at org.jetbrains.kotlin.ir.expressions.impl.IrCallWithIndexedArgumentsBase.transformChildren(IrCallWithIndexedArgumentsBase.kt:70)
   at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoidKt.transformChildrenVoid(IrElementTransformerVoid.kt:288)
   at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.transformChildrenVoid(IrElementTransformerVoid.kt:283)
   at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.transformChildren(IrElementTransformerVoid.kt:25)
   at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.visitExpression(IrElementTransformerVoid.kt:112)
   at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.visitMemberAccess(IrElementTransformerVoid.kt:166)
   at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.visitFunctionAccess(IrElementTransformerVoid.kt:169)
   at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.visitCall(IrElementTransformerVoid.kt:172)
   at androidx.compose.plugins.kotlin.compiler.lower.ComposableCallTransformer.visitCall(ComposableCallTransformer.kt:163)
   at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.visitCall(IrElementTransformerVoid.kt:173)
   at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.visitCall(IrElementTransformerVoid.kt:24)
   at org.jetbrains.kotlin.ir.expressions.impl.IrCallImpl.accept(IrCallImpl.kt:89)
   at org.jetbrains.kotlin.ir.expressions.IrExpression$DefaultImpls.transform(IrExpression.kt:28)
   at org.jetbrains.kotlin.ir.expressions.impl.IrExpressionBase.transform(IrExpressionBase.kt:24)
   at org.jetbrains.kotlin.ir.expressions.impl.IrReturnImpl.transformChildren(IrReturnImpl.kt:47)
   at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoidKt.transformChildrenVoid(IrElementTransformerVoid.kt:288)
   at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.transformChildrenVoid(IrElementTransformerVoid.kt:283)
   at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.transformChildren(IrElementTransformerVoid.kt:25)
   at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.visitExpression(IrElementTransformerVoid.kt:112)
   at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.visitReturn(IrElementTransformerVoid.kt:250)
   at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.visitReturn(IrElementTransformerVoid.kt:251)
   at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.visitReturn(IrElementTransformerVoid.kt:24)
   at org.jetbrains.kotlin.ir.expressions.impl.IrReturnImpl.accept(IrReturnImpl.kt:40)
   at org.jetbrains.kotlin.ir.expressions.IrExpression$DefaultImpls.transform(IrExpression.kt:28)
   at org.jetbrains.kotlin.ir.expressions.impl.IrExpressionBase.transform(IrExpressionBase.kt:24)
   at org.jetbrains.kotlin.ir.expressions.impl.IrExpressionBase.transform(IrExpressionBase.kt:24)
   at org.jetbrains.kotlin.ir.expressions.impl.IrBlockBodyImpl.transformChildren(IrBlockBodyImpl.kt:49)
   at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoidKt.transformChildrenVoid(IrElementTransformerVoid.kt:288)
   at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.transformChildrenVoid(IrElementTransformerVoid.kt:283)
   at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.transformChildren(IrElementTransformerVoid.kt:25)
   at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.visitBody(IrElementTransformerVoid.kt:93)
   at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.visitBlockBody(IrElementTransformerVoid.kt:99)
   at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.visitBlockBody(IrElementTransformerVoid.kt:100)
   at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.visitBlockBody(IrElementTransformerVoid.kt:24)
   at org.jetbrains.kotlin.ir.expressions.impl.IrBlockBodyImpl.accept(IrBlockBodyImpl.kt:40)
   at org.jetbrains.kotlin.ir.expressions.IrBody$DefaultImpls.transform(IrBody.kt:24)
   at org.jetbrains.kotlin.ir.expressions.IrBlockBody$DefaultImpls.transform(IrBody.kt)
   at org.jetbrains.kotlin.ir.expressions.impl.IrBlockBodyImpl.transform(IrBlockBodyImpl.kt:26)
   at org.jetbrains.kotlin.ir.declarations.impl.IrFunctionBase.transformChildren(IrFunctionBase.kt:77)
   at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoidKt.transformChildrenVoid(IrElementTransformerVoid.kt:288)
   at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.transformChildrenVoid(IrElementTransformerVoid.kt:283)
   at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.transformChildren(IrElementTransformerVoid.kt:25)
   at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.visitDeclaration(IrElementTransformerVoid.kt:46)
   at androidx.compose.plugins.kotlin.compiler.lower.ComposableCallTransformer.visitDeclaration(ComposableCallTransformer.kt:125)
   at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.visitFunction(IrElementTransformerVoid.kt:55)
   at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.visitSimpleFunction(IrElementTransformerVoid.kt:58)
   at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.visitSimpleFunction(IrElementTransformerVoid.kt:59)
   at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.visitSimpleFunction(IrElementTransformerVoid.kt:24)
   at org.jetbrains.kotlin.ir.declarations.impl.IrFunctionImpl.accept(IrFunctionImpl.kt:89)
   at org.jetbrains.kotlin.ir.declarations.IrDeclaration$DefaultImpls.transform(IrDeclaration.kt:42)
   at org.jetbrains.kotlin.ir.declarations.impl.IrDeclarationBase.transform(IrDeclarationBase.kt:27)
   at org.jetbrains.kotlin.ir.expressions.impl.IrFunctionExpressionImpl.transformChildren(IrFunctionExpressionImpl.kt:34)
   at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoidKt.transformChildrenVoid(IrElementTransformerVoid.kt:288)
   at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.transformChildrenVoid(IrElementTransformerVoid.kt:283)
   at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.transformChildren(IrElementTransformerVoid.kt:25)
   at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.visitExpression(IrElementTransformerVoid.kt:112)
   at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.visitFunctionExpression(IrElementTransformerVoid.kt:203)
   at androidx.compose.plugins.kotlin.compiler.lower.ComposableCallTransformer.visitFunctionExpression(ComposableCallTransformer.kt:190)
   at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.visitFunctionExpression(IrElementTransformerVoid.kt:205)
   at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.visitFunctionExpression(IrElementTransformerVoid.kt:24)
   at org.jetbrains.kotlin.ir.expressions.impl.IrFunctionExpressionImpl.accept(IrFunctionExpressionImpl.kt:26)
   at org.jetbrains.kotlin.ir.expressions.IrExpression$DefaultImpls.transform(IrExpression.kt:28)
   at org.jetbrains.kotlin.ir.expressions.impl.IrExpressionBase.transform(IrExpressionBase.kt:24)
   at org.jetbrains.kotlin.ir.expressions.impl.IrCallWithIndexedArgumentsBase.transformChildren(IrCallWithIndexedArgumentsBase.kt:70)
   at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoidKt.transformChildrenVoid(IrElementTransformerVoid.kt:288)
   at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.transformChildrenVoid(IrElementTransformerVoid.kt:283)
   at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.transformChildren(IrElementTransformerVoid.kt:25)
   at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.visitExpression(IrElementTransformerVoid.kt:112)
   at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.visitMemberAccess(IrElementTransformerVoid.kt:166)
   at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.visitFunctionAccess(IrElementTransformerVoid.kt:169)
   at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.visitCall(IrElementTransformerVoid.kt:172)
   at androidx.compose.plugins.kotlin.compiler.lower.ComposableCallTransformer.visitCall(ComposableCallTransformer.kt:163)
   at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.visitCall(IrElementTransformerVoid.kt:173)
   at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.visitCall(IrElementTransformerVoid.kt:24)
   at org.jetbrains.kotlin.ir.expressions.impl.IrCallImpl.accept(IrCallImpl.kt:89)
   at org.jetbrains.kotlin.ir.expressions.IrExpression$DefaultImpls.transform(IrExpression.kt:28)
   at org.jetbrains.kotlin.ir.expressions.impl.IrExpressionBase.transform(IrExpressionBase.kt:24)
   at org.jetbrains.kotlin.ir.expressions.impl.IrBranchImpl.transformChildren(IrWhenImpl.kt:89)
   at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoidKt.transformChildrenVoid(IrElementTransformerVoid.kt:288)
   at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.transformChildrenVoid(IrElementTransformerVoid.kt:283)
   at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.transformChildren(IrElementTransformerVoid.kt:25)
   at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.visitElseBranch(IrElementTransformerVoid.kt:223)
   at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.visitElseBranch(IrElementTransformerVoid.kt:224)
   at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.visitElseBranch(IrElementTransformerVoid.kt:24)
   at org.jetbrains.kotlin.ir.expressions.IrElseBranch$DefaultImpls.transform(IrWhen.kt:42)
   at org.jetbrains.kotlin.ir.expressions.impl.IrElseBranchImpl.transform(IrWhenImpl.kt:94)
   at org.jetbrains.kotlin.ir.expressions.impl.IrElseBranchImpl.transform(IrWhenImpl.kt:94)
   at org.jetbrains.kotlin.ir.expressions.impl.IrWhenBase.transformChildren(IrWhenImpl.kt:44)
   at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoidKt.transformChildrenVoid(IrElementTransformerVoid.kt:288)
   at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.transformChildrenVoid(IrElementTransformerVoid.kt:283)
   at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.transformChildren(IrElementTransformerVoid.kt:25)
   at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.visitExpression(IrElementTransformerVoid.kt:112)
   at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.visitWhen(IrElementTransformerVoid.kt:217)
   at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.visitWhen(IrElementTransformerVoid.kt:218)
   at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.visitWhen(IrElementTransformerVoid.kt:24)
   at org.jetbrains.kotlin.ir.expressions.impl.IrWhenBase.accept(IrWhenImpl.kt:36)
   at org.jetbrains.kotlin.ir.expressions.IrExpression$DefaultImpls.transform(IrExpression.kt:28)
   at org.jetbrains.kotlin.ir.expressions.impl.IrExpressionBase.transform(IrExpressionBase.kt:24)
   at org.jetbrains.kotlin.ir.expressions.impl.IrExpressionBase.transform(IrExpressionBase.kt:24)
   at ...
l
hmm. this is likely from a situation where you are calling a composable function from outside of a composable function
if you can narrow it down to the source code that triggers the error, i’d be interested in seeing it so we can have it fail earlier (its supposed to be an IDE-time error)
z
I didn't add new code, just updated dev05 -> dev07. I'll try to narrow it down.
l
yeah, there was a very big infrastructural change to the compiler in dev06
this wouldn’t have failed prior to that
z
looks like I found it
so I had extension method
Copy code
private fun StackScope.foo() {}
with composables inside, but no Composable annotation on it, and calling it like 
Stack { foo() }
funny thing is as soon as I commented out the call site, IDE gave me warning correctly
but while it's being referenced, it doesn't complain
l
hmm. can you paste more complete repro? which part are you commenting out?
z
sure
I was migrating Pokedex, this file:
you can see lines 53-59
if I comment them out, IDE fails correctly that those extension methods don't have Composable annotation
but it doesn't fail if they're not commented out
l
oh strange
if you comment out the callsites in Content, then the declarations (like line 81) would show an error?
z
yes, all of them
l
eek
that’s not good lol
can you try removing 
private
from all of them and see if that for some strange reason fixes it?
z
sure
l
(sounds stupid but private access is implemented in strange ways in kotlin)
z
nope, even without private it gets to compiler exception
l
the exception i would still expect to happen
but i’m wondering if the IDE is quicker to yell at you
z
I meant yes, IDE lets it through without warning
l
boo
ok
z
private doesn't make a difference
l
thanks!
z
nw
thanks for useful pointer to problem
l
i’ll add this to the list of problems with our frontend analysis
z
but again, point is IDE somehow still finds it if the call site is commented out, not sure what difference it makes, but might be a helpful detail
l
yep. that does help
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