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############################################################################
#
# File: procname.icn
#
# Subject: Procedure to produce name of procedure
#
# Author: Ralph E. Griswold
#
# Date: May 2, 2001
#
############################################################################
#
# This file is in the public domain.
#
############################################################################
#
# procname(p, x) produces the name of a procedure from a procedure value.
# Here, the term "procedure" includes functions, operators, and
# record constructors.
#
# If x is null, the result is derived from image() is a relatively
# straightforward way. In the case of operators, the number of
# arguments is appended to the operator symbol.
#
# If x is nonnull, the result is put in a form that resembles an Icon
# expression.
#
# procname() fails if p is not of type procedure.
#
############################################################################
procedure procname(p, x)
local result
image(p) ? {
=("function " | "procedure " | "record constructor ")
if /x then return if any(&letters) then tab(0) else tab(0) || args(p)
else result := tab(0)
if any(&letters, result) then return result || "()"
else return case args(p) of {
0: result
1: result || "e"
2: if result == "[]" then "e1[e2]" else "e1 " || result || " e2"
3: case result of {
"...": "e1 to e2 by e3"
"[:]": "e1[e2:e3]"
default: "<<< ... " || result || "... >>>"
}
}
}
end
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