/*-
*-----------------------------------------------------------------------
* CondToken --
* Return the next token from the input.
*
* Results:
* A Token for the next lexical token in the stream.
*
* Side Effects:
* condPushback will be set back to None if it is used.
*-----------------------------------------------------------------------
*/
static Token
CondToken(bool doEval)
{
if (condPushBack != None) {
Token t;
t = condPushBack;
condPushBack = None;
return t;
}
while (isspace(*condExpr))
condExpr++;
switch (*condExpr) {
case '(':
condExpr++;
return LParen;
case ')':
condExpr++;
return RParen;
case '|':
if (condExpr[1] == '|')
condExpr++;
condExpr++;
return Or;
case '&':
if (condExpr[1] == '&')
condExpr++;
condExpr++;
return And;
case '!':
condExpr++;
return Not;
case '\n':
case '\0':
return EndOfFile;
case '"':
return CondHandleString(doEval);
case '$':
return CondHandleVarSpec(doEval);
case '0': case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9':
return CondHandleNumber(doEval);
default:
return CondHandleDefault(doEval);
}
}
/*-
*-----------------------------------------------------------------------
* CondToken --
* Return the next token from the input.
*
* Results:
* A Token for the next lexical token in the stream.
*
* Side Effects:
* condPushback will be set back to None if it is used.
*-----------------------------------------------------------------------
*/
static Token
CondToken(bool doEval)
{
if (condPushBack != None) {
Token t;
t = condPushBack;
condPushBack = None;
return t;
}
while (*condExpr == ' ' || *condExpr == '\t')
condExpr++;
switch (*condExpr) {
case '(':
condExpr++;
return LParen;
case ')':
condExpr++;
return RParen;
case '|':
if (condExpr[1] == '|')
condExpr++;
condExpr++;
return Or;
case '&':
if (condExpr[1] == '&')
condExpr++;
condExpr++;
return And;
case '!':
condExpr++;
return Not;
case '\n':
case '\0':
return EndOfFile;
case '"':
return CondHandleString(doEval);
case '$':
return CondHandleVarSpec(doEval);
default:
return CondHandleDefault(doEval);
}
}