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other number support

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nora 2021-05-28 14:58:30 +02:00 • committed by GitHub
parent e8967b3273
commit 02afd00fd3
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1 changed files with 24 additions and 3 deletions
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27
src/main/java/com/github/nilstrieb/grsbpl/language/Lexer.java
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@ -128,13 +128,34 @@ public class Lexer {
} }
} }
private void number() { private void number() {
int radix = 10;
if (last() == '0') {
if (peek() == 'x') {
consume();
consume();
radix = 16;
} else if (peek() == 'b') {
consume();
consume();
radix = 2;
} else if (peek() == 'o') {
consume();
consume();
radix = 8;
}
}
StringBuilder number = new StringBuilder(String.valueOf(last())); StringBuilder number = new StringBuilder(String.valueOf(last()));
while (Character.isDigit(peek())) {
number.append(advance()); while (isAlphaNumeric(peek())) {
char c = advance();
if (c != '_') {
number.append(c);
}
} }
try { try {
int value = Integer.parseInt(number.toString()); int value = Integer.parseInt(number.toString(), radix);
add(CHARACTER, value); add(CHARACTER, value);
} catch (NumberFormatException e) { } catch (NumberFormatException e) {
throw lexException("Value not an integer: " + number); throw lexException("Value not an integer: " + number);