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# itags - an Icon/Idol tag generator by Nick Kline
# hacks (such as this header comment) by Clint Jeffery
# last edit: 12/13/89
#
# the output is a sorted list of lines of the form
# identifier owning_scope category_type filename lineno(:length)
#
# owning scope is the name of the class or procedure or record in which
# the tag is defined.
# category type is the kind of tag; one of:
# (global,procedure,record,class,method,param,obj_field,rec_field)
#
global ibrowseflag
procedure main(args)
local line, lineno, fout, i, fin, notvar, objects, actual_file, outlines
initial {
fout := open("ITAGS", "w") | stop("can't open ITAGS for writing");
outlines := [[0,0,0,0,0,0]]
i := 1
notid := &cset -- &ucase -- &digits -- &lcase -- '_'
}
if(*args=0) then
stop("usage: itags file1 [file2 ...]")
while i <= *args do {
if args[i] == "-i" then {
ibrowseflag := 1
i +:= 1
continue
}
fin := open(args[i],"r") |
stop("could not open file ",args[i]," exiting")
lineno := 1
objects := program( args[i] )
while line := read(fin) do {
line[upto('#',line):0] := ""
line ? {
tab(many(' '))
if =("global") then {
if(any(notid)) then
every objects$addvar( getword(), lineno )
}
if =("procedure") then
if(any(notid)) then {
objects$addproc( getword(), lineno )
objects$myline(tab(0),lineno)
}
if =("class") then
if any(notid) then {
objects$addclass( getword(), lineno )
objects$myline(tab(0),lineno)
}
if =("method") then {
if any(notid) then {
objects$addmethod( getword(), lineno )
objects$myline(tab(0),lineno)
}
}
if =("local") then {
if any(notid) then
every objects$addvar( getword(), lineno )
}
if =("static") then {
if any(notid) then
every objects$addstat( getword(), lineno )
}
if =("record") then {
if any(notid) then {
objects$addrec( getword(), lineno )
objects$myline(tab(0),lineno)
objects$endline( lineno)
}
}
if =("end") then
objects$endline(lineno)
}
lineno +:= 1
}
objects$drawthyself(outlines)
i +:= 1
}
# now process all the resulting lines
every i := 2 to *outlines do {
outlines[i] := (
left(outlines[i][1],outlines[1][1]+1) ||
left(outlines[i][2],outlines[1][2]+1) ||
left(outlines[i][3],outlines[1][3]+1) ||
left(outlines[i][4],outlines[1][4]+1) ||
left(outlines[i][5],outlines[1][5]) ||
(if \outlines[i][6] then ":"||outlines[i][6] else ""))
}
outlines := outlines[2:0]
outlines := sort(outlines)
every write(fout,!outlines)
end
class functions(name, lineno,vars,lastline, parent, params,stat,paramtype)
method drawthyself(outfile)
local k
every k := !self.vars do
emit(outfile, k[1], self.name, "local", self.parent$myfile(),k[2])
every k := !self.params do
emit(outfile, k[1], self.name, self.paramtype, self.parent$myfile(),k[2])
every k := !self.stat do
emit(outfile, k[1], self.name, "static", self.parent$myfile(),k[2])
end
method myline(line,lineno)
local word
static ids, letters
initial {
ids := &lcase ++ &ucase ++ &digits ++ '_'
letters := &ucase ++ &lcase
}
line ? while tab(upto(letters)) do {
word := tab(many(ids))
self.params|||:= [[word,lineno]]
}
end
method addstat(varname, lineno)
self.stat|||:=[[varname, lineno]]
return
end
method addvar(varname, lineno)
self.vars|||:=[[varname, lineno]]
return
end
method endline( lineno )
self.lastline := lineno
end
method resetcontext()
self.parent$resetcontext()
end
initially
self.vars := []
self.params := []
self.stat := []
self.paramtype := "param"
end # end of class functions
class proc : functions(name,lineno, parent,paramtype)
method drawthyself(outfile)
emit(outfile,self.name, "*" , "procedure", self.parent$myfile(),self.lineno, self.lastline-self.lineno+1)
self$functions.drawthyself(outfile)
end
initially
self.paramtype := "param"
end # of class proc
class rec : functions(name, lineno, parent, line, paramtype)
method drawthyself(outfile)
emit(outfile,self.name, "*", "record", self.parent$myfile(),
self.lineno)
self$functions.drawthyself(outfile)
end
initially
self.paramtype := "rec_field"
end # class record
class program(public myfile, vars, proc, records, classes, curcontext, contextsave,globals)
method endline( lineno )
self.curcontext$endline( lineno )
self.curcontext := pop(self.contextsave)
end
method myline( line,lineno)
self.curcontext$myline( line,lineno)
end
method drawthyself(outfile)
every k := !self.globals do
emit(outfile,k[1], "*", "global", self.myfile,k[2])
every (!self.proc)$drawthyself(outfile)
every (!self.records)$drawthyself(outfile)
every (!self.classes)$drawthyself(outfile)
end
method addmethod(name, lineno)
push(self.contextsave,self.curcontext)
self.curcontext := self.curcontext$addmethod(name,lineno)
return
end
method addstat(varname, lineno)
self.curcontext$addstat(varname, lineno)
end
method addvar(varname, lineno)
if self.curcontext === self
then self.globals|||:= [[varname,lineno]]
else self.curcontext$addvar(varname,lineno)
return
end
method addproc(procname, lineno)
push(self.contextsave, self.curcontext)
self.curcontext := proc(procname, lineno, self)
self.proc|||:= [self.curcontext]
return
end
method addrec(recname, lineno)
push(self.contextsave, self.curcontext)
self.curcontext := rec(recname, lineno,self)
self.records|||:=[self.curcontext]
return
end
method addclass(classname, lineno)
push(self.contextsave, self.curcontext)
self.curcontext := class_(classname, lineno, self)
self.classes|||:=[self.curcontext]
return
end
method resetcontext()
self.curcontext := pop(self.contextsave)
end
initially
self.globals := []
self.proc := []
self.records := []
self.classes := []
self.curcontext := self
self.contextsave := []
end # end of class program
class class_ : functions (public name, lineno, parent, meth,paramtype)
method myfile()
return self.parent$myfile()
end
method addmethod(methname, lineno)
self.meth|||:= [methods(methname, lineno, self)]
return (self.meth[-1])
end
method drawthyself(outfile)
emit(outfile,self.name, "*" , "class", self.parent$myfile(),self.lineno, self.lastline-self.lineno+1)
every (!self.meth)$drawthyself(outfile)
self$functions.drawthyself(outfile)
end
initially
self.meth := []
self.paramtype := "obj_field"
end #end of class_
class methods: functions(name, lineno, parent,paramtype)
method drawthyself(outfile)
emit(outfile,self.name, self.parent$name() , "method", self.parent$myfile(),self.lineno, self.lastline-self.lineno+1)
self$functions.drawthyself(outfile)
end
initially
self.paramtype := "param"
end #end of members class
procedure emit(outlist,ident, scope, type, filename, line, length)
outlist[1][1] := outlist[1][1] < *ident
outlist[1][2] := outlist[1][2] < *scope
outlist[1][3] := outlist[1][3] < *type
outlist[1][4] := outlist[1][4] < *filename
outlist[1][5] := outlist[1][5] < *line
outlist[1][6] := outlist[1][6] < *\length
if /ibrowseflag then
put( outlist, [ident,scope,type,filename,line,length] )
else
put( outlist, [ident,scope,type,filename,line,length] )
end
procedure getword()
local word
static ids,letts
initial {
ids := &ucase ++ &lcase ++ &digits ++ '_'
letts := &ucase ++ &lcase
}
while tab(upto(letts)) do {
word := tab(many(ids))
suspend word
}
end
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