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no hard crash anymore for invalid string escape sequences or unknown petscii characters

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This commit is contained in:
Irmen de Jong 2019-04-03 22:25:26 +02:00
parent 518c3bfd76
commit 3e7e44acfe
3 changed files with 15 additions and 3 deletions
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5
compiler/src/prog8/CompilerMain.kt
View File

@ -152,6 +152,11 @@ private fun compileMain(args: Array<String>) {
System.err.println(px.message)
System.err.print("\u001b[0m") // reset
exitProcess(1)
} catch (ax: AstException) {
System.err.print("\u001b[91m") // bright red
System.err.println(ax.toString())
System.err.print("\u001b[0m") // reset
exitProcess(1)
} catch (x: Exception) {
print("\u001b[91m") // bright red
println("\n* internal error *")

11
compiler/src/prog8/ast/AST.kt
View File

@ -11,6 +11,7 @@ import prog8.functions.NotConstArgumentException
import prog8.functions.builtinFunctionReturnType
import prog8.parser.CustomLexer
import prog8.parser.prog8Parser
import java.io.CharConversionException
import java.io.File
import java.nio.file.Path
import kotlin.math.abs
@ -2145,7 +2146,13 @@ private fun prog8Parser.ExpressionContext.toAst() : IExpression {
}
litval.floatliteral()!=null -> LiteralValue(DataType.FLOAT, floatvalue = litval.floatliteral().toAst(), position = litval.toPosition())
litval.stringliteral()!=null -> LiteralValue(DataType.STR, strvalue = unescape(litval.stringliteral().text, litval.toPosition()), position = litval.toPosition())
litval.charliteral()!=null -> LiteralValue(DataType.UBYTE, bytevalue = Petscii.encodePetscii(unescape(litval.charliteral().text, litval.toPosition()), true)[0], position = litval.toPosition())
litval.charliteral()!=null -> {
try {
LiteralValue(DataType.UBYTE, bytevalue = Petscii.encodePetscii(unescape(litval.charliteral().text, litval.toPosition()), true)[0], position = litval.toPosition())
} catch (ce: CharConversionException) {
throw SyntaxError(ce.message ?: ce.toString(), litval.toPosition())
}
}
litval.arrayliteral()!=null -> {
val array = litval.arrayliteral()?.toAst()
// the actual type of the arrayspec can not yet be determined here (missing namespace & heap)
@ -2304,7 +2311,7 @@ internal fun unescape(str: String, position: Position): String {
'u' -> {
"${iter.nextChar()}${iter.nextChar()}${iter.nextChar()}${iter.nextChar()}".toInt(16).toChar()
}
else -> throw AstException("$position invalid escape char in string: \\$ec")
else -> throw SyntaxError("invalid escape char in string: \\$ec", position)
})
} else {
result.add(c)

2
examples/test.p8
View File

@ -6,7 +6,7 @@
~ main {
sub start() {
ubyte ub=2
ubyte ub='^'
ubyte ub2=7
uword uw=2
uword uw2=5