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#-h- forcod 2259 local 12/01/80 15:54:07
# forcod - beginning of for statement
include defs
subroutine forcod (lab)
integer lab
include COMMON_BLOCKS
character t, token (MAXTOK)
character gettok, gnbtok
integer i, j, nlpar
integer length, labgen
string ifnot "if (.not."
string serrchk ".and.(.not.xerflg))) "
lab = labgen (3)
call outcon (0)
if (gnbtok (token, MAXTOK) != LPAREN) {
call synerr ("missing left paren.")
return
}
if (gnbtok (token, MAXTOK) != SEMICOL) { # real init clause
call pbstr (token)
call outtab
call eatup
call outdwe
}
if (gnbtok (token, MAXTOK) == SEMICOL) # empty condition
call outcon (lab)
else { # non-empty condition
call pbstr (token)
call outnum (lab)
call outtab
call outstr (ifnot)
call outch (LPAREN)
nlpar = 0
while (nlpar >= 0) {
t = gettok (token, MAXTOK)
if (t == SEMICOL)
break
if (t == LPAREN)
nlpar = nlpar + 1
else if (t == RPAREN)
nlpar = nlpar - 1
if (t == EOF) {
call pbstr (token)
return
}
if (t == ALPHA)
call squash (token)
if (t != NEWLINE & t != UNDERLINE)
call outstr (token)
}
# name encountered for which error checking is required?
if (ername == YES)
call outstr (serrchk)
else {
call outch (RPAREN)
call outch (RPAREN)
call outch (BLANK)
}
call outgo (lab+2) # error checking below (errgo)
if (nlpar < 0)
call synerr ("invalid for clause.")
}
fordep = fordep + 1 # stack reinit clause
j = 1
for (i = 1; i < fordep; i = i + 1) # find end
j = j + length (forstk (j)) + 1
forstk (j) = EOS # null, in case no reinit
nlpar = 0
t = gnbtok (token, MAXTOK)
call pbstr (token)
while (nlpar >= 0) {
t = gettok (token, MAXTOK)
if (t == LPAREN)
nlpar = nlpar + 1
else if (t == RPAREN)
nlpar = nlpar - 1
if (t == EOF) {
call pbstr (token)
break
}
if (nlpar >= 0 & t != NEWLINE & t != UNDERLINE) {
if (t == ALPHA)
call squash (token)
if (j + length (token) >= MAXFORSTK)
call baderr ("for clause too long.")
call scopy (token, 1, forstk, j)
j = j + length (token)
}
}
lab = lab + 1 # label for next's
call indent (1)
call errgo
return
end
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