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#===========================================================================
# Filename : scm_decl.rb
# About : a function declaration processing library for SigScheme
#
# Copyright (C) 2005-2006 YAMAMOTO Kengo <yamaken AT bp.iij4u.or.jp>
# Copyright (c) 2007-2008 SigScheme Project <uim-en AT googlegroups.com>
#
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
# 3. Neither the name of authors nor the names of its contributors
# may be used to endorse or promote products derived from this software
# without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS
# IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR
# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
# OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
# OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#===========================================================================
# ScmObj
# scm_p_call_with_values(ScmObj producer, ScmObj consumer,
# ScmEvalState *eval_state)
# {
# ScmObj vals;
# DECLARE_FUNCTION("call-with-values", procedure_fixed_tailrec_2);
#
# |
# V
#
# $1 :prototype SCM_EXPORT ScmObj scm_p_call_with_values(ScmObj producer, ScmObj consumer, ScmEvalState *eval_state)
# $2 :scope SCM_EXPORT
# $3 :ret ScmObj
# $4 :func scm_p_call_with_values
# $5 :prefix p
# $6 :func_body call_with_values
# $7 :args ScmObj producer, ScmObj consumer, ScmEvalState *eval_state
# $8 :proc call-with-values
# $9 :functype_whole procedure_fixed_tailrec_2
# $10 :functype_prefix procedure
# $11 :functype_spec fixed_tailrec_2
SCM_DECL_RE = /\n((SCM_EXPORT\s+)?(ScmObj)\s+(scm_([sp])_(\w+))\(([^{]+)\))[ \t]*\n\s*\{[^{}]+DECLARE_FUNCTION\(\s*\"([^\"]+)\"[\s,]+(([^_]+)_([\w]+))\)/m
# :register_func scm_register_procedure_fixed_tailrec_2
# :functype_code SCM_PROCEDURE_FIXED_TAILREC_2
class String
def scan_scm_decl
res = []
scan(SCM_DECL_RE) { |prototype, scope, ret, func, prefix, func_body, args, proc, functype_whole, functype_prefix, functype_spec|
decl = {
:prototype => prototype.gsub(/\s+/, " "),
:scope => scope,
:ret => ret,
:func => func,
:prefix => prefix,
:func_body => func_body,
:args => args.gsub(/\s+/, " "),
:proc => proc,
:register_func => "scm_register_" + functype_whole,
:functype_code => "SCM_" + functype_whole.upcase,
:functype_whole => functype_whole,
:functype_prefix => functype_prefix,
:functype_spec => functype_spec,
}
res << yield(decl)
}
res
end
end
# Obsolete
#def scm_func_table_entry(decl)
# proc, func, register_func = decl.values_at(:proc, :func, :register_func)
# "{ \"#{proc}\", (ScmFuncType)#{func}, (ScmRegisterFunc)#{register_func} }"
#end
def scm_func_table_entry(decl)
proc, func, functype_code = decl.values_at(:proc, :func, :functype_code)
"{ \"#{proc}\", (ScmFuncType)#{func}, #{functype_code} }"
end
def scm_func_register_exp(decl)
proc, func, register_func = decl.values_at(:proc, :func, :register_func)
"#{register_func}(\"#{proc}\", #{func})"
end
def scm_generate_func_table_body(str)
str.scan_scm_decl { |decl|
entry = scm_func_table_entry(decl)
" #{entry},\n"
}.join
end
def scm_generate_func_register_exps(str)
str.scan_scm_decl { |decl|
exp = scm_func_register_exp(decl)
" #{exp};\n"
}.join
end
def scm_generate_func_prototypes(str)
str.scan_scm_decl { |decl|
"#{decl[:prototype]};\n"
}.join
end
# usage examples
#src = ARGF.read
#print src.scan_scm_decl { |decl|
# p decl
#}
#print src.scan_scm_decl { |decl|
# if (/!$/ =~ decl[:proc])
# func = decl[:func]
# print "perl -i -pe 's/\\b#{func}\\b/#{func.sub(/d$/, "x")}/g'\n"
# end
#}
#print scm_generate_func_table_body(src)
#print scm_generate_func_register_exps(src)
#print scm_generate_func_prototypes(src)
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