diff options
| -rw-r--r-- | parse.c | 26 |
1 files changed, 24 insertions, 2 deletions
diff --git a/parse.c b/parse.c index 38481aa..edb6c29 100644 --- a/parse.c +++ b/parse.c @@ -254,6 +254,29 @@ lexinit() done = 1; } +static int64_t +getint() +{ + uint64_t n; + int c, m; + + n = 0; + c = fgetc(inf); + m = 0; + switch (c) { + case '-': m = 1; + case '+': c = fgetc(inf); + } + do { + n = 10*n + (c - '0'); + c = fgetc(inf); + } while ('0' <= c && c <= '9'); + ungetc(c, inf); + if (m) + n = 1 + ~n; + return *(int64_t *)&n; +} + static int lex() { @@ -312,8 +335,7 @@ lex() } if (isdigit(c) || c == '-' || c == '+') { ungetc(c, inf); - if (fscanf(inf, "%"SCNd64, &tokval.num) != 1) - err("invalid integer literal"); + tokval.num = getint(); return Tint; } if (c == '"') { |