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fix ast type error in float cast to bool

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This commit is contained in:
Irmen de Jong 2022-12-28 22:09:49 +01:00
parent a7df094ff4
commit f5b202d438
2 changed files with 6 additions and 3 deletions
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4
compiler/src/prog8/compiler/astprocessing/BoolRemover.kt
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@ -2,6 +2,7 @@ package prog8.compiler.astprocessing
import prog8.ast.Node
import prog8.ast.Program
import prog8.ast.base.FatalAstException
import prog8.ast.expressions.*
import prog8.ast.statements.Subroutine
import prog8.ast.statements.SubroutineParameter
@ -14,7 +15,8 @@ internal class BoolRemover(val program: Program) : AstWalker() {
override fun before(typecast: TypecastExpression, parent: Node): Iterable<IAstModification> {
if(typecast.type == DataType.BOOL) {
val notZero = BinaryExpression(typecast.expression, "!=", NumericLiteral(DataType.UBYTE, 0.0, typecast.position), typecast.position)
val valueDt = typecast.expression.inferType(program).getOrElse { throw FatalAstException("unknown dt") }
val notZero = BinaryExpression(typecast.expression, "!=", NumericLiteral(valueDt, 0.0, typecast.position), typecast.position)
return listOf(IAstModification.ReplaceNode(typecast, notZero, parent))
}
return noModifications

5
docs/source/todo.rst
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@ -3,10 +3,11 @@ TODO
For next release
^^^^^^^^^^^^^^^^
- make sure bool value is always 0 or 1 (all casts should convert), then:
- rewrite bool=bool^1 into bool=not bool
- make sure bool value is always 0 or 1 (all casts should convert, or actually, bool!=0 comparison should return 0 or 1), then:
- ast rewrite bool=bool^1 into bool=not bool
- should solve: bool bb = not bb -> larger code than bool bb ^= 1
- check that bool==0 / bool==1 / bool!=0 / bool != 1 are optimized away
...