* module/language/ecmascript/tokenize.scm: Use `make-lexical-token' and
related procedures instead of pairs as tokens passed to the parser.
Pass source location information in the form of `source-location'
objects.
* module/language/ecmascript/parse.scm (read-ecmascript,
read-ecmascript/1): Instantiate a new parser at each call.
(parse-ecmascript): Rename to...
(make-parser): ... this. Change `->' to `:' in the grammar syntax.
* module/language/ecmascript/parse-lalr.scm: Remove.
* module/Makefile.am (ECMASCRIPT_LANG_SOURCES): Remove
`language/ecmascript/parse-lalr.scm'.
* module/Makefile.am (ECMASCRIPT_LANG_SOURCES):
* module/language/ecmascript/compile-ghil.scm:
* module/language/ecmascript/compile-tree-il.scm: SOURCES): Replace the
GHIL compiler with a ->tree-il compiler. Not fully functional, but the
basics work.
* module/language/ecmascript/spec.scm: Only include the tree-il compiler.
* module/language/ecmascript/tokenize.scm (read-punctuation): Avoid
mutating a constant.
* module/language/ecmascript/tokenize.scm: Attach source information to
tokens. We have to enhance the lalr parser to actually let this
information propagate through, though...
* libguile/vm-i-system.c (drop, return): Declare drop and return as
popping one arg from the stack.
* module/language/ghil/compile-glil.scm:
* module/language/glil/compile-assembly.scm (make-meta): Adjust so that
we declare 'drop and 'return calls as popping one arg from the stack.
* module/language/ecmascript/compile-ghil.scm (comp, comp-body): Flesh
out a bit more. Most significantly, scoping within functions obeys
javascript semantics better, modulo bits about with() forms.
* module/language/ecmascript/impl.scm: Define some runtime helper
routines.
* module/language/Makefile.am (SOURCES): Add impl.scm.
* module/language/ecmascript/parse.scm (parse-ecmascript): Minor tweaks.
* module/language/ecmascript/tokenize.scm (read-identifier): Identifiers
now read as symbols, not strings.
* module/language/ecmascript/parse-lalr.scm: Add the Boucher/Bison lalr
parser. This is from guile-lib, but with : changed to -> so as not to
molest `prefix' keywords. Should probably be elsewhere.
* module/language/ecmascript/parse.scm: Add parser for ECMAScript. Rules
from the spec, 3rd edition.
* module/language/ecmascript/tokenize.scm: Add ECMAScript tokenizer,
hand-written. Neat stuff.
* module/language/Makefile.am: Autofoo.
