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* Use rlet in a few place macros for better code.Kaz Kylheku2016-09-211-3/+3
| | | | | | * share/txr/stdlib/place.tl (pset, push, pushnew): Use rlet for binding the assigned or pushed value to a temporary, so the temporary can disappear if the value is a constant.
* Fix broken sys:rslot place.Kaz Kylheku2016-09-211-4/+4
| | | | | | | | | | | | This is used in the awk macro. Breaking test case is an update modification of f, like (push 3 f); a broken call to sys:rslotset is generated with a too few arguments. * share/txr/stdlib/struct.tl (defplace sys:rslot): Fix name clash between gensym and parameter. Add the meth-slot-sym parameter into the sys:rslotset call where it is missing as a required parameter.
* awk macro: streamline field splitting.Kaz Kylheku2016-09-211-13/+7
| | | | | | | | | * share/txr/awk.tl (sys:awk-state rec-to-f): Check for empty record only in the fs case; it's not necessary when tokenizing with ft. Check (not self.kfs) first, since it's the common case. Handle default case (no fs or ft) using tok-str using the regex #/[^ \t\n]+/, which requires no trim-str and no empty record check.
* New library feature: imperative list building.Kaz Kylheku2016-09-201-0/+85
| | | | | | | | | | | * lisplib.c (build_set_entries, build_instantiate): New static functions. (dlt_register): Register dynamic loading of build.tl via the two new functions. * share/txr/stdlib/build.tl: New file. * txr.1: Documented everything.
* Version 150.txr-150Kaz Kylheku2016-09-181-1/+1
| | | | | | | | | | * RELNOTES: Updated. * configure, txr.1: Bumped version and date. * share/txr/stdlib/ver.tl: Likewise. * txr.vim, tl.vim: Regenerated.
* New awk operator: fconv.Kaz Kylheku2016-09-182-1/+88
| | | | | | | | | * share/txr/stdlib/awk.tl (sys:awk-let): Add new symbol macro, fconv. * share/txr/stdlib/conv.tl: New file. * txr.1: Documented fconv.
* New awk variable: krs.Kaz Kylheku2016-09-171-3/+6
| | | | | | | | | | | * share/txr/stdlib/awk.tl (sys:awk-state): New slot, krs. (sys:awk-state loop): Use record-adapter if krs is true, even if the default fs is in effect. Pass value of krs to record-adapter function. (sys:awk-let): Provide krs "awk variable" symbol macro. * txr.1: Documented krs. Clarified semantics of rs being those of both separation and termination.
* New awk variables: ft and kfs.Kaz Kylheku2016-09-161-5/+12
| | | | | | | | | | * share/txr/stdlib/awk.tl (sys:awk-state): New slots, ft and kfs. (sys:awk-state rec-to-f): Implement ft and kfs semantics. (sys:awk-let): Provide ft and kfs as "awk variable" via symbol macros. * txr.1: Documented ft and kfs.
* awk macro: don't bind *stdout* if :output missing.Kaz Kylheku2016-09-141-1/+2
| | | | | | | | * share/txr/stdlib/awk.tl (awk): Bind *stdout* only if awc.output is not nil; i.e. :output has been specified (with a non-nil argument). * txr.1: Revised :output documentation.
* New place-mutating macro: upd.Kaz Kylheku2016-09-141-0/+5
| | | | | | | | * lisplib.c (place_set_entries): Add upd to the auto-load list for place.tl. * share/txr/stdlib/place.tl (upd): New macro. * txr.1: Documented.
* Version 149.txr-149Kaz Kylheku2016-09-121-1/+1
| | | | | | | | | | * RELNOTES: Updated. * configure, txr.1: Bumped version and date. * share/txr/stdlib/ver.tl: Likewise. * txr.vim, tl.vim: Regenerated.
* awk macro: revise how implicit block works, and name.Kaz Kylheku2016-09-121-30/+36
| | | | | | | | | | | | * share/txr/stdlib/awk.tl (sys:awk-expander): Check that :name designates a symbol, and that it isn't nil. (awk): Move the implicit block to the outermost scope so it encloses all of the clauses. Default to the name awk for the block, rather than nil. * txr.1: Document that the implicit awk block is called awk by default, and that nil is not allowed as a block name.
* awk macro: more Awk-like treatment of prn args.Kaz Kylheku2016-09-121-1/+6
| | | | | | | | | | * share/txr/stdlib/awk.tl (sys:awk-state prn): Use loop instead of simple interpolation, so that we we can individually interpolate each arg into a quasistring. This way if an arg is nil, it turns into nothing rather than the word "nil". * txr.1: Documented this behavior of prn.
* awk macro: fix: rebind *stdout* in broader scope.Kaz Kylheku2016-09-121-2/+2
| | | | | | | | | | * share/txr/stdlib/awk.tl (sys:awk-state loop): Do not bind *stdout* around the call to the main record-processing function. (awk): Re-bind *stdout* around all of the user code, just after the run-time awk state object is constructed. * txr.1: Correct the lies written about :output.
* awk macro: new local macros ff and mf.Kaz Kylheku2016-09-121-1/+7
| | | | | | | * share/txr/stdlib/awk.tl (sys:awk-let): New local macros. * txr.1: Documented.
* awk macro: don't use cat-str to update rec.Kaz Kylheku2016-09-111-1/+1
| | | | | | * share/txr/stdlib/awk.tl (sys:awk-state f-to-rec): Use quasiliteral to combine fields to reconstitute rec; cat-str works only with characters and strings.
* awk macro: field splitting more Awk-like.Kaz Kylheku2016-09-111-6/+14
| | | | | | | | | | | * share/txr/stdlib/awk.tl (sys:awk-state): Initialize fs to nil rather than the default regex. (sys:awk-state rec-to-f): If fs is nil then operate on a version of rec that is filtered through trim-str. Thus fs being nil is like the Awk special case when fs is a space. * txr.1: Description of fs updated.
* Replace some rlet and slet uses with alet.Kaz Kylheku2016-09-111-13/+15
| | | | | | | | | | | * share/txr/stdlib/place.tl (nthcdr): Fix a potentially wrong order of evaluation by using a temporary symbol for the list and using alet. If the list form could potentially modify the index, then we now avoid a bug here. (vecref, chr-str, ref, gethash, slot): Optimise the expansion of these two-expression places using alet. If both expressions are symbols, which is often the case, temporaries are avoided.
* New alet macro.Kaz Kylheku2016-09-111-0/+6
| | | | | | | | | * lisplib.c (place_set_entries): Add alet symbol to autoload list for place.tl. * share/txr/stdlib/place.tl (alet): New macro. * txr.1: Documented alet.
* rlet cleanup: replace safe with let or slet.Kaz Kylheku2016-09-112-70/+70
| | | | | | | | | | | | | * gencadr.txr: Use let instead of useless rlet that will just reduce to let. * share/txr/stdlib/cadr.tl: Regenerated. * share/txr/stdlib/place.tl (sys:var, car, cdr, errno): Replace rlet with slet where safe. (nthcdr): Replace useless let* with let. Replace one safe-looking rlet with slet. (dwim): Replace useless rlet with let.
* awk macro: don't use record stream if rs is "\n".Kaz Kylheku2016-09-111-6/+7
| | | | | | * share/txr/stdlib/awk.tl (sys:awk-state loop): Take input stream directly without a record adapter, if the record separator is the string "\n".
* awk macro: implement :begin-file and :end-file.Kaz Kylheku2016-09-101-32/+53
| | | | | | | | | | | | | | | | | | * share/txr/stdlib/awk.tl (sys:awk-compile-time): New slots, begin-file-actions and end-file-actions. (sys:awk-state loop): Take two additional functional arguments for the begin file and end file actions, and do the calls in the right places. unwind-protect triggers the end file function. (sys:awk-expander): Parse out :begin-file and :end-file actions. (awk): Generate lambdas for begin-file and end-file actions, if they are defined. Pass these to the loop method. The code is refactored here to do one big sys:awk-let around everything. * txr.1: Documented :begin-file and :end-file, revising the :begin and :end documentation in the process.
* awk macro: move expander values into compile-time struct.Kaz Kylheku2016-09-101-26/+25
| | | | | | | | | | | | | | | * share/txr/stdlib/awk.tl (sys:awk-compile-time): New slots: inputs, output, name, lets, begin-actions, end-actions, cond-actions. (sys:awk-expander): Use just one local variable, an awk compile time. Instead of the previous local variables, use the slots of this structure and return just that structure. Note that pattern-actions has been renamed cond-actions. This is per the terminology used in the newly-written documentation. (awk): Adjust to sys:awk-expander returning just the awk compile-time structure. No need to set up numerous locals; just refer to struct.
* awk macro: don't use zap.Kaz Kylheku2016-09-091-1/+1
| | | | | * share/txr/stdlib/awk.tl (sys:awk-state rec-to-f): Don't use zap macro when the return value is not used.
* awk macro: fix buggy range semantics.Kaz Kylheku2016-09-091-5/+9
| | | | | | | | | * share/txr/stdlib/awk.tl (sys:awk-let): The closing expression of an awk range only applies when the range is active. Refactor generated code with local flags to eliminate duplicating the end range expression. Avoid evaluating the start range expression if the range is already active.
* awk macro: better code for rng with placelet.Kaz Kylheku2016-09-091-1/+1
| | | | | | | * share/txr/stdlib/awk.tl (sys:awk-let): Use our wonderful placelet macro instead of symacrolet for binding the flag alias to the flag place. This removes the duplicate evaluations of the slot access.
* awk macro: revise rng eval strategy.Kaz Kylheku2016-09-081-24/+43
| | | | | | | | | | | | | | | | | | | | | | | | | awk ranges must evaluate out-of-band after the record is read, before the patterns and actions are evaluated. * share/txr/stdlib/awk.tl (sys:awk-compile-time): New slots, rng-expr-temps and rng-exprs. (sys:awk-let): Stash the code for evaluating a range into the compile-time info into the rng-exprs list, and associate it with a gensym in the parallel rng-expr-temps list. Then emit that gensym as the expansion for the rng form. (awk): Process the pattern code in two steps. First, expand it, to get it to drop the rng-exprs into the awk compile-time info structure. Then when generating the final lambda, wrap an let* around the generated code which binds the rng-temps with the rng-exprs. This resolves the gensym references that replaced the ranges. let* is is used and its bindings are reversed into discovery order because this supports nested rng syntax. Given (rng x (rng y z)), the (rng y z) is expanded first, and so its code and temp gensym are pushed onto their respective lists firsts. The outer rng's code will thus contain a temp referring to the code of the inner one.
* awk macro: handle string typed output.Kaz Kylheku2016-09-081-1/+3
| | | | | * share/txr/stdlib/awk.tl (sys:awk-state): if output is a string, open file.
* awk macro: support ors (output record separator).Kaz Kylheku2016-09-081-2/+4
| | | | | | | * share/txr/stdlib/awk.tl (sys:awk-state): New slot, ors. (sys:awk-state prn): Use put-string to output the record rather than put-line, and stick the ors at the end. (sys:awk-let): Provide ors local symbol macro.
* Optimize qref and sys:rslot using slet.Kaz Kylheku2016-09-081-3/+3
| | | | | | | | | | | * share/txr/stdlib/struct.tl (qref): Use slet instead of let in expansion so that in the common case of var.(method ...) the expansion simply produces a form with var evaluated in two places. (sys:rslot): Use slet instead of rlet. * tests/012/struct.tl: Update qref expansion test-cases to test for the now simpler expansions.
* New slet macro.Kaz Kylheku2016-09-081-5/+12
| | | | | | | | | | | | | | | | * lisplib.c (place_set_entries): Add slet symbol to autoload list for place.tl. * share/txr/stdlib/place.tl (sys:r-s-let-expander): New function. (rlet): Replace body with call to sys:r-s-let-expander. (slet): New macro. * txr.1: Clarification and corrections in rlet description and example. rlet will in fact handle the three-variable rotation case because, since a is not a constant expression, (rlet ((temp a)) ...) reduces to let. Documented new slet.
* Range operators for awk macro.Kaz Kylheku2016-09-081-11/+26
| | | | | | | | | | | | | | | | | | | | | | | * share/txr/stdlib/awk.tl (sys:awk-state): New slot, rng-vec: holds boolean flags for ranges. New slot, rng-n, holds size for rng-vec. New :postinit handler for creating vector for rng-vec. (sys:awk-compile-time): New struct. (sys:awk-expander): Construct an awk compile time, and return that as one of the values. (sys:awk-let): Provide (rng) local macro: the two argument range operator. Generates code and keeps track of number of ranges and their association to a position in rng-vec using the compile-time info structure. (awk): Capture awk compile-time object from expander. Initialize rng-n slot of awk state with number of ranges indicated in compile time info. Pass compile-time info to awk:let macro. Binding of lambda and of awk state had to be reordered because macro-expansion of the lambda fills in the compile time info which is then used in the expansion of the constructing expression for the awk state.
* New place-mutating operators.Kaz Kylheku2016-09-081-0/+43
| | | | | | | * share/txr/stdlib/place.tl (pinc, pdec, test-set, test-clear, compare-swap, test-inc, test-dec): New macros. * txr.1: Documented.
* No-op expansion for (inc 0) and (dec 0).Kaz Kylheku2016-09-081-2/+2
| | | | | | | * share/txr/stdlib/place.tl (inc, dec): If the delta is zero, don't generate code which calls getter and setter; just generate the place form as the output.
* Awk comes to TXR via a macro.Kaz Kylheku2016-09-071-0/+148
| | | | | | | | | * lisplib.c (awk_set_entries, awk_instantiate): New static functions. (lisplib_init): Register auto-loading for awk module via new functions. * share/txr/stdlib/awk.tl: New file.
* New rslot macro to suport upcoming awk macro.Kaz Kylheku2016-09-071-0/+27
| | | | | | | | | | | | This provides a way to create lexical macros denoting slots, such that method are invoked when they are updated. * lisplib.c (struct_set_entries): Add rslot to list of auto-load symbols for struct.tl module. * share/txr/stdlib/struct.tl (sys:rslotset): New function. (rslot, rslot): New macro and place macro. (sys:rslot): New place kind.
* Bugfix: issue with expansion of place macros.Kaz Kylheku2016-09-071-1/+1
| | | | | | | | | | | | | | | | | | | The expansion of a place macro form should not be subject to a complete macro-expansion (as a regular macro form). Only one round of expansion should be performed, and the results should be re-tried as a place macro. Otherwise an opportunity to expland a place macro will be missed. * share/txr/stdlib/place.tl (sys:pl-expand): Use macroexpand-1 rather than macroexpand. * txr.1: Documentation updated to make the new behavior clear. It's unlikely that anything in the world depends on this, so no backward compatibility switch is being provded to the old behavior. In situations where this makes a difference, the old behavior is likely too wrong to be useful.
* Bugfix: x not macro-expanded in (set [x i] y).Kaz Kylheku2016-09-071-10/+13
| | | | | | | | | * share/txr/stdlib/place.tl (sys:l1-setq): Expand sym, because it might not be a symbol. If it isn't a symbol, just generate a set. (dwim): Unconditionally bind sys:*lisp1* to t, whether or not the unexpanded place is a symbol. It could expand to a symbol. The context is lisp-1 if it does that.
* Bugfix: nthcdr place not obtaining macro env.Kaz Kylheku2016-09-071-5/+9
| | | | | | | | | | | | * share/txr/stdlib/place.tl (sys:*pl-env*): New special variable for passing macro-expansion environment to expanders. (call-update-expander, call-clobber-expander, call-delete-expander): bind sys:*pl-env* with passed-in env argument, so if the expander needs to itself recursively expand a macro, it has the macro-time env. (nthcdr): Do not try to capture :env parameter, because this will always be nil. Refer to sys:*pl-env* instead.
* Version 148.txr-148Kaz Kylheku2016-09-011-1/+1
| | | | | | | | * RELNOTES: Updated. * configure, txr.1: Bumped version and date. * share/txr/stdlib/ver.tl: Likewise.
* Version 146.txr-146Kaz Kylheku2016-07-201-1/+1
| | | | | | | | | | * RELNOTES: Updated. * configure, txr.1: Bumped version and date. * share/txr/stdlib/ver.tl: Likewise. * txr.vim, tl.vim: Regenerated.
* Version 145.txr-145Kaz Kylheku2016-07-031-1/+1
| | | | | | | | | | * RELNOTES: Updated. * configure, txr.1: Bumped version and date. * share/txr/stdlib/ver.tl: Likewise. * txr.vim, tl.vim: Regenerated.
* Version 144.txr-144Kaz Kylheku2016-06-291-1/+1
| | | | | | | | | | * RELNOTES: Updated. * configure, txr.1: Bumped version and date. * share/txr/stdlib/ver.tl: Likewise. * txr.vim, tl.vim: Regenerated.
* Fix broken place delete semantics of symbol-value.Kaz Kylheku2016-06-081-1/+1
| | | | | * share/txr/stdlib/place.tl (defplace symbol-value): Don't splice body into deleter syntax; must use plain unquote.
* Version 143.txr-143Kaz Kylheku2016-06-041-1/+1
| | | | | | | | | | * RELNOTES: Updated. * configure, txr.1: Bumped version and date. * share/txr/stdlib/ver.tl: Likewise. * txr.vim, tl.vim: Regenerated.
* Version 142.txr-142Kaz Kylheku2016-05-291-1/+1
| | | | | | | | | | * RELNOTES: Updated. * configure, txr.1: Bumped version and date. * share/txr/stdlib/ver.tl: Likewise. * txr.vim, tl.vim: Regenerated.
* Version 141.txr-141Kaz Kylheku2016-05-201-1/+1
| | | | | | | | | | * RELNOTES: Updated. * configure, txr.1: Bumped version and date. * share/txr/stdlib/ver.tl: Likewise. * txr.vim, tl.vim: Regenerated.
* Adding termios support.Kaz Kylheku2016-05-181-0/+78
| | | | | | | | | | | | | | | | * Makefile (termios.o): New object file. * lib.c (init): Call termios_init. * lisplib.c (termios_set_entries, termios_instantiate): New functions. (lisplib_init): Register new functions in autoload table. * share/txr/stdlib/termios.tl: New file. * termios.c, termios.h: New files. * txr.1: Documented termios.
* Version 140.txr-140Kaz Kylheku2016-05-071-1/+1
| | | | | | | | | | * RELNOTES: Updated. * configure, txr.1: Bumped version and date. * share/txr/stdlib/ver.tl: Likewise. * txr.vim, tl.vim: Regenerated.
* Somew new path access testing functions.Kaz Kylheku2016-05-041-3/+26
| | | | | | | | | | | | | | * lisplib.c (path_test_set_entries): New elements in the list for path-readable-to-me-p, path-read-writable-to-me-p, and path-strictly-private-to-me-p. * share/txr/stdlib/path-test.pl (sys:path-access): Test bitwise combinations of permissions, so read+write can be tested in one call. (path-readable-to-me-p, path-read-writable-to-me-p, path-strictly-private-to-me-p): New functions. * txr.1: Documented.
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