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ash: improve readability of the code. No real code changes.

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This commit is contained in:
Denis Vlasenko 2008-06-23 13:06:34 +00:00
parent ef527f50e6
commit 2b75a94118
1 changed files with 9 additions and 9 deletions
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18
shell/ash.c
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@ -11146,7 +11146,8 @@ xxreadtoken(void)
}
}
}
return lasttoken = xxreadtoken_tokens[p - xxreadtoken_chars];
lasttoken = xxreadtoken_tokens[p - xxreadtoken_chars];
return lasttoken;
}
}
} /* for */
@ -12997,21 +12998,19 @@ arith(const char *expr, int *perrcode)
char arithval; /* Current character under analysis */
operator lasttok, op;
operator prec;
operator *stack, *stackptr;
const char *p = endexpression;
int errcode;
size_t datasizes = strlen(expr) + 2;
v_n_t *numstack, *numstackptr;
unsigned datasizes = strlen(expr) + 2;
/* Stack of integers */
/* The proof that there can be no more than strlen(startbuf)/2+1 integers
* in any given correct or incorrect expression is left as an exercise to
* the reader. */
v_n_t *numstack = alloca(((datasizes)/2)*sizeof(v_n_t)),
*numstackptr = numstack;
numstackptr = numstack = alloca((datasizes / 2) * sizeof(numstack[0]));
/* Stack of operator tokens */
operator *stack = alloca((datasizes) * sizeof(operator)),
*stackptr = stack;
stackptr = stack = alloca(datasizes * sizeof(stack[0]));
*stackptr++ = lasttok = TOK_LPAREN; /* start off with a left paren */
*perrcode = errcode = 0;
@ -13040,7 +13039,8 @@ arith(const char *expr, int *perrcode)
if (numstackptr != numstack+1) {
/* ... but if there isn't, it's bad */
err:
return (*perrcode = -1);
*perrcode = -1;
return *perrcode;
}
if (numstack->var) {
/* expression is $((var)) only, lookup now */