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Better error messages for arays without sizes

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This commit is contained in:
Karol Stasiak 2020-11-18 23:08:09 +01:00
parent 97c7d0ffed
commit dc087ed887
1 changed files with 22 additions and 19 deletions
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41
src/main/scala/millfork/env/Environment.scala vendored
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@ -1832,28 +1832,31 @@ class Environment(val parent: Option[Environment], val prefix: String, val cpuFa
if (stmt.const && stmt.address.isEmpty) {
log.error(s"Constant array `${stmt.name}` without contents nor address", stmt.position)
}
stmt.length match {
case None => log.error(s"Array `${stmt.name}` without size nor contents", stmt.position)
case Some(l) =>
// array arr[...]
val address = stmt.address.map(a => eval(a).getOrElse(log.fatal(s"Array `${stmt.name}` has non-constant address", stmt.position)))
val (indexType, lengthConst) = l match {
case VariableExpression(name) =>
maybeGet[Type](name) match {
case Some(typ@EnumType(_, Some(count))) =>
typ -> NumericConstant(count, Constant.minimumSize(count))
case Some(typ) =>
log.error(s"Type $name cannot be used as an array index", l.position)
w -> Constant.Zero
case _ =>
val constant = eval(l).getOrElse(errorConstant(s"Array `${stmt.name}` has non-constant length", Some(l), stmt.position))
w -> constant
}
val l = stmt.length match {
case None =>
log.error(s"Array `${stmt.name}` without size nor contents", stmt.position)
LiteralExpression(1,1)
case Some(l) => l
}
// array arr[...]
val address = stmt.address.map(a => eval(a).getOrElse(log.fatal(s"Array `${stmt.name}` has non-constant address", stmt.position)))
val (indexType, lengthConst) = l match {
case VariableExpression(name) =>
maybeGet[Type](name) match {
case Some(typ@EnumType(_, Some(count))) =>
typ -> NumericConstant(count, Constant.minimumSize(count))
case Some(typ) =>
log.error(s"Type $name cannot be used as an array index", l.position)
w -> Constant.Zero
case _ =>
val constant = eval(l).getOrElse(errorConstant(s"Array `${stmt.name}` has non-constant length", Some(l), stmt.position))
w -> constant
}
lengthConst match {
case _ =>
val constant = eval(l).getOrElse(errorConstant(s"Array `${stmt.name}` has non-constant length", Some(l), stmt.position))
w -> constant
}
lengthConst match {
case NumericConstant(length, _) =>
if (length > 0xffff || length < 0) log.error(s"Array `${stmt.name}` has invalid length", stmt.position)
val alignment = stmt.alignment.getOrElse(defaultArrayAlignment(options, length))
@ -1902,7 +1905,7 @@ class Environment(val parent: Option[Environment], val prefix: String, val cpuFa
}
case _ => log.error(s"Array `${stmt.name}` has weird length", stmt.position)
}
}
case Some(contents1) =>
val contents = extractArrayContents(contents1)
val indexType = stmt.length match {