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-- Copyright (C) 2007, Gabriel Dos Reis.
-- All rights reserved.
--
-- Redistribution and use in source and binary forms, with or without
-- modification, are permitted provided that the following conditions are
-- met:
--
-- - Redistributions of source code must retain the above copyright
-- notice, this list of conditions and the following disclaimer.
--
-- - 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.
--
-- - Neither the name of The Numerical ALgorithms Group Ltd. 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 OWNER
-- 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.
--%
--% This file provides interface to the interperter parser (which is
--% different from the compiler parser). A higher level interface
--% to these low level facilities exists in the algrebra as domain Parser.
--%
import cparse
import pf2sex
namespace BOOT
++ returns the list of tokens making up a line in the stream `s'
tokenizeLine s ==
[dq, stream] := first s
[lines, rest] := ncloopDQlines(dq, $lines)
setCurrentLine(mkLineList lines)
$lines := rest
[[npParse dqToList dq], :rest s]
++ parse the IO stream `s' obtained from file `f'
parseStream(s, f) ==
$lines := incStream(s, f)
collectParsedLines(
next(function tokenizeLine,
next(function insertpile,
next(function lineoftoks, $lines))), nil)
++ return the list of all tokens making up the stream `s'
collectTokens s ==
StreamNull s => nil
ts := first s
[ts, :collectTokens rest s]
++ return the list of parsed lines from stream `s'. `p' is the list
++ of parsed lines collected so far.
collectParsedLines(s, p) ==
StreamNull s => p
ptree := first s
collectParsedLines(rest s, [:p, ptree])
++ parse the whole file `file'. Returns a list of parse tree
++ containing full source location information.
parseInputFile file ==
WITH_-OPEN_-FILE(st file, parseStream(st, file))
++ Same as parseInputFile, but returns a parse form, instead of
++ of a parse tree, i.e. source location information left out.
getParseFormsFromFile file ==
[zeroOneTran packageTran pf2Sex t for t in parseInputFile file]
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