diff options
Diffstat (limited to 'src/main/java/io')
| -rw-r--r-- | src/main/java/io/github/moulberry/notenoughupdates/util/Calculator.java | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/src/main/java/io/github/moulberry/notenoughupdates/util/Calculator.java b/src/main/java/io/github/moulberry/notenoughupdates/util/Calculator.java index 0762d107..2b741e94 100644 --- a/src/main/java/io/github/moulberry/notenoughupdates/util/Calculator.java +++ b/src/main/java/io/github/moulberry/notenoughupdates/util/Calculator.java @@ -98,7 +98,7 @@ public class Calculator { public static List<Token> lex(String source) throws CalculatorException { List<Token> tokens = new ArrayList<>(); - boolean justParsedNumber = false; + boolean doesNotHaveLValue = true; for (int i = 0; i < source.length(); ) { char c = source.charAt(i); if (Character.isWhitespace(c)) { @@ -107,7 +107,7 @@ public class Calculator { } Token token = new Token(); token.tokenStart = i; - if (!justParsedNumber && c == '-') { + if (doesNotHaveLValue && c == '-') { token.tokenLength = 1; token.type = TokenType.PREOP; token.operatorValue = "-"; @@ -175,7 +175,8 @@ public class Calculator { } else { throw new CalculatorException("Unknown thing " + c, i, 1); } - justParsedNumber = token.type == TokenType.NUMBER || token.type == TokenType.VARIABLE; + doesNotHaveLValue = + token.type == TokenType.LPAREN || token.type == TokenType.PREOP || token.type == TokenType.BINOP; tokens.add(token); i += token.tokenLength; } @@ -218,7 +219,7 @@ public class Calculator { Token l = op.peek(); if (l.type == TokenType.LPAREN) break; - assert (l.type == TokenType.BINOP); + assert (l.type == TokenType.BINOP || l.type == TokenType.PREOP); int pl = getPrecedence(l); if (pl >= p) { // Association order out.add(op.pop()); |