diff options
Diffstat (limited to 'src/interp')
| -rw-r--r-- | src/interp/ChangeLog | 6 | ||||
| -rw-r--r-- | src/interp/Makefile.in | 7 | ||||
| -rw-r--r-- | src/interp/Makefile.pamphlet | 7 | ||||
| -rw-r--r-- | src/interp/spad-parser.boot | 94 |
4 files changed, 110 insertions, 4 deletions
diff --git a/src/interp/ChangeLog b/src/interp/ChangeLog index 700dbfef..ebaf84a0 100644 --- a/src/interp/ChangeLog +++ b/src/interp/ChangeLog @@ -1,3 +1,9 @@ +2007-11-15 Gabriel Dos Reis <gdr@cs.tamu.edu> + + * Makefile.pamphlet (OBJS): Include spad-parser.$(FASLEXT). + (spad-parser.$(FASLEXT)): New rule. + * spad-parser.boot: New file. + 2007-11-13 Gabriel Dos Reis <gdr@cs.tamu.edu> * Makefile.pamphlet (br-search.$(FASLEXT)): New rule. diff --git a/src/interp/Makefile.in b/src/interp/Makefile.in index 190ce68a..e79389ba 100644 --- a/src/interp/Makefile.in +++ b/src/interp/Makefile.in @@ -72,7 +72,7 @@ OBJS= vmlisp.$(FASLEXT) hash.$(FASLEXT) \ packtran.$(FASLEXT) pathname.$(FASLEXT) \ pf2sex.$(FASLEXT) pile.$(FASLEXT) \ posit.$(FASLEXT) property.$(FASLEXT) \ - ptrees.$(FASLEXT) \ + ptrees.$(FASLEXT) spad-parser.$(FASLEXT) \ record.$(FASLEXT) \ rulesets.$(FASLEXT) \ scan.$(FASLEXT) serror.$(FASLEXT) \ @@ -579,7 +579,10 @@ server.$(FASLEXT): server.boot macros.$(FASLEXT) ## The old parser component roughtly is: ## -parse.$(FASLEXT): parse.boot postpar.$(FASLEXT) +spad-parser.$(FASLEXT): spad-parser.boot parse.$(FASLEXT) + $(BOOTSYS) -- --compile --output=$@ --load-directory=. $< + +parse.$(FASLEXT): parse.boot metalex.$(FASLEXT) postpar.$(FASLEXT) $(BOOTSYS) -- --compile --boot="old" --output=$@ --load-directory=. $< postpar.$(FASLEXT): postpar.boot postprop.$(FASLEXT) diff --git a/src/interp/Makefile.pamphlet b/src/interp/Makefile.pamphlet index b30cc054..c178279e 100644 --- a/src/interp/Makefile.pamphlet +++ b/src/interp/Makefile.pamphlet @@ -341,7 +341,7 @@ OBJS= vmlisp.$(FASLEXT) hash.$(FASLEXT) \ packtran.$(FASLEXT) pathname.$(FASLEXT) \ pf2sex.$(FASLEXT) pile.$(FASLEXT) \ posit.$(FASLEXT) property.$(FASLEXT) \ - ptrees.$(FASLEXT) \ + ptrees.$(FASLEXT) spad-parser.$(FASLEXT) \ record.$(FASLEXT) \ rulesets.$(FASLEXT) \ scan.$(FASLEXT) serror.$(FASLEXT) \ @@ -1156,7 +1156,10 @@ server.$(FASLEXT): server.boot macros.$(FASLEXT) ## The old parser component roughtly is: ## -parse.$(FASLEXT): parse.boot postpar.$(FASLEXT) +spad-parser.$(FASLEXT): spad-parser.boot parse.$(FASLEXT) + $(BOOTSYS) -- --compile --output=$@ --load-directory=. $< + +parse.$(FASLEXT): parse.boot metalex.$(FASLEXT) postpar.$(FASLEXT) $(BOOTSYS) -- --compile --boot="old" --output=$@ --load-directory=. $< postpar.$(FASLEXT): postpar.boot postprop.$(FASLEXT) diff --git a/src/interp/spad-parser.boot b/src/interp/spad-parser.boot new file mode 100644 index 00000000..7a26fb70 --- /dev/null +++ b/src/interp/spad-parser.boot @@ -0,0 +1,94 @@ +-- 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 contains a low-level code for parsing a Spad source file +-- into an internal AST. Please note that this AST is the AST used by +-- the Spad compiler, which is different from the AST used by the +-- interpreter (a VAT). The AST, for the entire file, is a List Syntax +-- Since this is low-level code, I don't expect people to get here, +-- and you should directly use it. If you think, you need to get to +-- here, then something is already wrong. +-- There is a higher-level interface, written in SPAD, to this +-- code. See the algebra file spad-parser.spad. +-- +-- -- gdr/2007-11-02 +-- + +import '"metalex" +import '"parse" +)package "BOOT" + +++ Given a pathname to a source file containing Spad code, returns +++ a list of (old) AST objects representing the toplevel expressions +++ in that file. +++ ??? system commands are still executed even if they may not be +++ ??? meaningful. Eventually this code will go away when we +++ ??? finally use the new parser everwhere. +parseSpadFile sourceFile == + $SPAD := true -- we are parsing Spad, + $BOOT := false -- not Boot. + SETQ(_*EOF_*, false) -- end of current input? + FILE_-CLOSED : local := false -- current stream closed? + + OUT_-STREAM : local := _*STANDARD_-OUTPUT_* -- noise to standard output + -- we need tell the post-parsing transformers that we're compiling + -- because few parse forms have slightly different representations + -- depending on whether we are interpreter mode or compiler mode. + savedInteractiveMode := $InteractiveMode + $InteractiveMode := false + INIT_-BOOT_/SPAD_-READER() + -- we need to restore the global input stream state after we + -- finished messing with it. + savedInStream := (IN_-STREAM : local) + + -- If soureFile cannot be processed for whatever reasons + -- get out of here instead of being stuck later. + not (IN_-STREAM := MAKE_-INSTREAM sourceFile) => + $InteractiveMode := savedInteractiveMode + IN_-STREAM := savedInStream + systemError '"cannot open input source file" + INITIALIZE_-PREPARSE IN_-STREAM + + -- gather parse trees for all toplevel expressions in sourceFile. + asts := [] + while ^(_*EOF_* or FILE_-CLOSED) repeat + BOOT_-LINE_-STACK : local := PREPARSE IN_-STREAM + LINE : local := CDAR BOOT_-LINE_-STACK + PARSE_-NewExpr() + asts := [parseTransform postTransform POP_-STACK_-1(), :asts] + -- clean up the mess, and get out of here + IOCLEAR(IN_-STREAM, OUT_-STREAM) + SHUT IN_-STREAM + IN_-STREAM := savedInStream + $InteractiveMode := savedInteractiveMode + -- we accumulated the parse trees in reverse order + nreverse asts + |