diff options
Diffstat (limited to 'chapter08/src/main/java')
| -rw-r--r-- | chapter08/src/main/java/com/seaofnodes/simple/Parser.java | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/chapter08/src/main/java/com/seaofnodes/simple/Parser.java b/chapter08/src/main/java/com/seaofnodes/simple/Parser.java index d4b0c327..eae6e0c6 100644 --- a/chapter08/src/main/java/com/seaofnodes/simple/Parser.java +++ b/chapter08/src/main/java/com/seaofnodes/simple/Parser.java @@ -594,6 +594,7 @@ public class Parser { String getAnyNextToken() { if (isEOF()) return ""; if (isIdStart(peek())) return parseId(); + if (isNumber(peek())) return parseNumberString(); if (isPunctuation(peek())) return parsePunctuation(); return String.valueOf(peek()); } @@ -602,13 +603,16 @@ public class Parser { boolean isNumber(char ch) {return Character.isDigit(ch);} private Type parseNumber() { - int start = _position; - while (isNumber(nextChar())) ; - String snum = new String(_input, start, --_position - start); + String snum = parseNumberString(); if (snum.length() > 1 && snum.charAt(0) == '0') throw error("Syntax error: integer values cannot start with '0'"); return TypeInteger.constant(Long.parseLong(snum)); } + private String parseNumberString() { + int start = _position; + while (isNumber(nextChar())) ; + return new String(_input, start, --_position - start); + } // First letter of an identifier private boolean isIdStart(char ch) { |