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avoid compiler crash when evaluating const expressions fails due to things like integer out of bounds

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Irmen de Jong 2021-03-04 01:32:02 +01:00
parent 96ba9f5902
commit 8dfe510883
1 changed files with 26 additions and 22 deletions
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48
compiler/src/prog8/optimizer/ConstExprEvaluator.kt
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@ -9,28 +9,32 @@ import kotlin.math.pow
class ConstExprEvaluator {
fun evaluate(left: NumericLiteralValue, operator: String, right: NumericLiteralValue): Expression {
return when(operator) {
"+" -> plus(left, right)
"-" -> minus(left, right)
"*" -> multiply(left, right)
"/" -> divide(left, right)
"%" -> remainder(left, right)
"**" -> power(left, right)
"&" -> bitwiseand(left, right)
"|" -> bitwiseor(left, right)
"^" -> bitwisexor(left, right)
"and" -> logicaland(left, right)
"or" -> logicalor(left, right)
"xor" -> logicalxor(left, right)
"<" -> NumericLiteralValue.fromBoolean(left < right, left.position)
">" -> NumericLiteralValue.fromBoolean(left > right, left.position)
"<=" -> NumericLiteralValue.fromBoolean(left <= right, left.position)
">=" -> NumericLiteralValue.fromBoolean(left >= right, left.position)
"==" -> NumericLiteralValue.fromBoolean(left == right, left.position)
"!=" -> NumericLiteralValue.fromBoolean(left != right, left.position)
"<<" -> shiftedleft(left, right)
">>" -> shiftedright(left, right)
else -> throw FatalAstException("const evaluation for invalid operator $operator")
try {
return when(operator) {
"+" -> plus(left, right)
"-" -> minus(left, right)
"*" -> multiply(left, right)
"/" -> divide(left, right)
"%" -> remainder(left, right)
"**" -> power(left, right)
"&" -> bitwiseand(left, right)
"|" -> bitwiseor(left, right)
"^" -> bitwisexor(left, right)
"and" -> logicaland(left, right)
"or" -> logicalor(left, right)
"xor" -> logicalxor(left, right)
"<" -> NumericLiteralValue.fromBoolean(left < right, left.position)
">" -> NumericLiteralValue.fromBoolean(left > right, left.position)
"<=" -> NumericLiteralValue.fromBoolean(left <= right, left.position)
">=" -> NumericLiteralValue.fromBoolean(left >= right, left.position)
"==" -> NumericLiteralValue.fromBoolean(left == right, left.position)
"!=" -> NumericLiteralValue.fromBoolean(left != right, left.position)
"<<" -> shiftedleft(left, right)
">>" -> shiftedright(left, right)
else -> throw FatalAstException("const evaluation for invalid operator $operator")
}
} catch (ax: FatalAstException) {
throw ExpressionError(ax.message, left.position)
}
}