/
core.scm
3212 lines (2970 loc) · 111 KB
/
core.scm
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;;;; core.scm - The CHICKEN Scheme compiler (core module)
;
;
; "This is insane. What we clearly want to do is not exactly clear, and is rooted in NCOMPLR."
;
;
;--------------------------------------------------------------------------------------------
; Copyright (c) 2008-2021, The CHICKEN Team
; Copyright (c) 2000-2007, Felix L. Winkelmann
; 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 author 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.
;
;
; Supported syntax:
;
; - Declaration specifiers:
;
; ([not] extended-bindings {<name>})
; ([not] inline {<var>})
; ([not] safe)
; ([not] standard-bindings {<name>})
; ([not] usual-integrations {<name>})
; (local {<name> ...})
; ([not] inline-global {<name>})
; ([number-type] <type>)
; (always-bound {<name>})
; (block)
; (block-global {<name>})
; (bound-to-procedure {<var>})
; (compile-syntax)
; (disable-interrupts)
; (emit-import-library {<module> | (<module> <filename>)})
; (export {<name>})
; (fixnum-arithmetic)
; (foreign-declare {<string>})
; (hide {<name>})
; (inline-limit <limit>)
; (unroll-limit <limit>)
; (keep-shadowed-macros)
; (no-argc-checks)
; (no-bound-checks)
; (no-procedure-checks)
; (no-procedure-checks-for-usual-bindings)
; (no-procedure-checks-for-toplevel-bindings)
; (profile <symbol> ...)
; (safe-globals)
; (separate)
; (type (<symbol> <typespec>) ...)
; (unit <unitname>)
; (unsafe)
; (unused <symbol> ...)
; (uses {<unitname>})
; (strict-types)
; (specialize)
; (enforce-argument-types [<symbol> ...])
;
; <type> = fixnum | generic
; - Global symbol properties:
;
; ##compiler#always-bound -> BOOL
; ##compiler#always-bound-to-procedure -> BOOL
; ##compiler#local -> BOOL
; ##compiler#visibility -> #f | 'hidden | 'exported
; ##compiler#constant -> BOOL defined as constant
; ##compiler#intrinsic -> #f | 'standard | 'extended
; ##compiler#inline -> 'no | 'yes
; ##compiler#inline-global -> 'yes | 'no | <node>
; ##compiler#profile -> BOOL
; ##compiler#unused -> BOOL
; ##compiler#foldable -> BOOL
; ##compiler#pure -> BOOL referentially transparent
; ##compiler#clean -> BOOL does not modify local state
; ##compiler#type -> TYPE
; ##compiler#type-source -> 'db | 'local | 'inference
; - Source language:
;
; <variable>
; <constant>
; (##core#declare {<spec>})
; (##core#immutable <exp>)
; (##core#quote <exp>)
; (##core#syntax <exp>)
; (##core#if <exp> <exp> [<exp>])
; (##core#let <variable> ({(<variable> <exp>)}) <body>)
; (##core#let ({(<variable> <exp>)}) <body>)
; (##core#letrec ({(<variable> <exp>)}) <body>)
; (##core#letrec* ({(<variable> <exp>)}) <body>)
; (##core#let-location <symbol> <type> [<init>] <exp>)
; (##core#lambda <variable> <body>)
; (##core#lambda ({<variable>}+ [. <variable>]) <body>)
; (##core#set! <variable> <exp>)
; (##core#ensure-toplevel-definition <variable>)
; (##core#begin <exp> ...)
; (##core#include <string> <string> | #f [<body>])
; (##core#loop-lambda <llist> <body>)
; (##core#undefined)
; (##core#primitive <name>)
; (##core#provide <id>)
; (##core#inline {<op>} <exp>)
; (##core#inline_allocate (<op> <words>) {<exp>})
; (##core#inline_ref (<name> <type>))
; (##core#inline_update (<name> <type>) <exp>)
; (##core#inline_loc_ref (<type>) <exp>)
; (##core#inline_loc_update (<type>) <exp> <exp>)
; (##core#compiletimetoo <exp>)
; (##core#compiletimeonly <exp>)
; (##core#elaborationtimetoo <exp>)
; (##core#elaborationtimeonly <exp>)
; (##core#define-foreign-variable <symbol> <type> [<string>])
; (##core#define-foreign-type <symbol> <type> [<proc1> [<proc2>]])
; (##core#foreign-lambda <type> <string> {<type>})
; (##core#foreign-lambda* <type> ({(<type> <var>)})) {<string>})
; (##core#foreign-safe-lambda <type> <string> {<type>})
; (##core#foreign-safe-lambda* <type> ({(<type> <var>)})) {<string>})
; (##core#foreign-primitive <type> ({(<type> <var>)}) {<string>})
; (##core#define-inline <name> <exp>)
; (##core#define-constant <name> <exp*>)
; (##core#foreign-callback-wrapper '<name> <qualifiers> '<type> '({<type>}) <exp>)
; (##core#define-external-variable <name> <type> <bool> [<symbol>])
; (##core#check <exp>)
; (##core#require-for-syntax <id>)
; (##core#require <id> [<id>])
; (##core#app <exp> {<exp>})
; (##core#define-syntax <symbol> <expr>)
; (##core#define-compiler-syntax <symbol> <expr>)
; (##core#let-compiler-syntax ((<symbol> <expr>) ...) <expr> ...)
; (##core#module <symbol> #t | (<name> | (<name> ...) ...) <body>)
; (##core#let-module-alias ((<alias> <name>) ...) <body>)
; (##core#the <type> <strict?> <exp>)
; (##core#typecase <info> <exp> (<type> <body>) ... [(else <body>)])
; (##core#debug-event {<event> <loc>})
; (##core#with-forbidden-refs (<var> ...) <loc> <expr>)
; (<exp> {<exp>})
; - Core language:
;
; [##core#variable {<variable>}]
; [##core#float-variable {<index>}]
; [if {} <exp> <exp> <exp>)]
; [quote {<const>}]
; [##core#float {<const>}]
; [let {<variable>} <exp-v> <exp>]
; [##core#lambda {<id> <mode> (<variable>... [. <variable>]) <size>} <exp>]
; [set! {<variable> [always-immediate?]} <exp>]
; [##core#undefined {}]
; [##core#primitive {<name>}]
; [##core#let_float {<index>} <exp> <exp>]
; [##core#box_float {} <exp>]
; [##core#unbox_float {} <exp>]
; [##core#inline {<op>} <exp>...]
; [##core#inline_allocate {<op> <words>} <exp>...]
; [##core#inline_ref {<name> <type>}]
; [##core#inline_update {<name> <type>} <exp>]
; [##core#inline_loc_ref {<type>} <exp>]
; [##core#inline_loc_update {<type>} <exp> <exp>]
; [##core#debug-event {<event> <loc> <ln>}]
; [##core#call {<safe-flag> [<debug-info>]} <exp-f> <exp>...]
; [##core#callunit {<unitname>} <exp>...]
; [##core#switch {<count>} <exp> <const1> <body1> ... <defaultbody>]
; [##core#rest-car {restvar depth [<debug-info>]}]
; [##core#rest-cdr {restvar depth [<debug-info>]}]
; [##core#rest-null? {restvar depth [<debug-info>]}]
; [##core#rest-length {restvar depth [<debug-info>]}]
; [##core#cond <exp> <exp> <exp>]
; [##core#provide <id>]
; [##core#recurse {<tail-flag>} <exp1> ...]
; [##core#return <exp>]
; [##core#direct_call {<safe-flag> <debug-info> <call-id> <words>} <exp-f> <exp>...]
; [##core#direct_lambda {<id> <mode> (<variable>... [. <variable>]) <size>} <exp>]
; [##core#the {<type> <strict>} <exp>]
; [##core#the/result {<typelist>} <exp>]
; [##core#typecase {<info> (<type> ...)} <exp> <body1> ... [<elsebody>]]
; - Closure converted/prepared language:
;
; [if {} <exp> <exp> <exp>]
; [quote {<exp>}]
; [##core#float {<const>}]
; [##core#bind {<count>} <exp-v>... <exp>]
; [##core#float-variable {<index>}]
; [##core#undefined {}]
; [##core#let_float {<index>} <exp> <exp>]
; [##core#box_float {} <exp>]
; [##core#unbox_float {} <exp>]
; [##core#inline {<op>} <exp>...]
; [##core#inline_allocate {<op <words>} <exp>...]
; [##core#inline_ref {<name> <type>}]
; [##core#inline_update {<name> <type>} <exp>]
; [##core#inline_loc_ref {<type>} <exp>]
; [##core#inline_loc_update {<type>} <exp> <exp>]
; [##core#debug-event {<index> <event> <loc> <ln>}]
; [##core#closure {<count>} <exp>...]
; [##core#box {} <exp>]
; [##core#unbox {} <exp>]
; [##core#ref {<index>} <exp>]
; [##core#update {<index>} <exp> <exp>]
; [##core#updatebox {} <exp> <exp>]
; [##core#update_i {<index>} <exp> <exp>]
; [##core#updatebox_i {} <exp> <exp>]
; [##core#call {<dbg-info-index> <safe-flag> [<debug-info> [<call-id> <customizable-flag>]]} <exp-f> <exp>...]
; [##core#callunit {<unitname>} <exp>...]
; [##core#cond <exp> <exp> <exp>]
; [##core#local {<index>}]
; [##core#setlocal {<index>} <exp>]
; [##core#global {<literal> <safe-flag> <block-mode> [<name>]}]
; [##core#setglobal {<literal> <block-mode> <name>} <exp>]
; [##core#setglobal_i {<literal> <block-mode> <name>} <exp>]
; [##core#literal {<literal>}]
; [##core#immediate {<type> [<immediate>]}] - type: bool/fix/nil/char
; [##core#proc {<name> [<non-internal>]}]
; [##core#provide <literal>]
; [##core#recurse {<tail-flag> <call-id>} <exp1> ...]
; [##core#return <exp>]
; [##core#direct_call {<dbg-info-index> <safe-flag> <debug-info> <call-id> <words>} <exp-f> <exp>...]
; Analysis database entries:
;
; <variable>:
;
; captured -> <boolean> If true: variable is used outside it's home-scope
; global -> <boolean> If true: variable does not occur in any lambda-list
; call-sites -> ((<lambda-id> <node>) ...) Known call-nodes of a named procedure
; home -> <lambda-id> Procedure which introduces this variable
; unknown -> <boolean> If true: variable cannot have a known value
; assigned -> <boolean> If true: variable is assigned somewhere
; assigned-locally -> <boolean> If true: variable has been assigned inside user lambda
; undefined -> <boolean> If true: variable is unknown yet but can be known later
; value -> <node> Variable has a known value
; local-value -> <node> Variable is declared local and has value
; potential-values -> (<node> ...) Global variable was assigned this value (used for lambda-info)
; references -> (<node> ...) Nodes that are accesses of this variable (##core#variable nodes)
; boxed -> <boolean> If true: variable has to be boxed after closure-conversion
; contractable -> <boolean> If true: variable names contractable procedure
; inlinable -> <boolean> If true: variable names potentially inlinable procedure
; collapsable -> <boolean> If true: variable refers to collapsable constant
; removable -> <boolean> If true: variable is not used
; replacable -> <variable> Variable can be replaced by another variable
; replacing -> <boolean> If true: variable can replace another variable (don't remove)
; standard-binding -> <boolean> If true: variable names a standard binding
; extended-binding -> <boolean> If true: variable names an extended binding
; unused -> <boolean> If true: variable is a formal parameter that is never used
; rest-parameter -> #f | 'list If true: variable holds rest-argument list
; rest-cdr -> (rvar . n) Variable references the cdr of rest list rvar after n cdrs (0 = rest list itself)
; rest-null? -> (rvar . n) Variable checks if the cdr of rest list rvar after n cdrs is empty (0 = rest list itself)
; derived-rest-vars -> (v1 v2 ...) Other variables aliasing or referencing cdrs of a rest variable
; constant -> <boolean> If true: variable has fixed value
; hidden-refs -> <boolean> If true: procedure that refers to hidden global variables
; inline-transient -> <boolean> If true: was introduced during inlining
;
; <lambda-id>:
;
; contains -> (<lambda-id> ...) Procedures contained in this lambda
; contained-in -> <lambda-id> Procedure containing this lambda
; has-unused-parameters -> <boolean> If true: procedure has unused formal parameters
; use-expr -> (<lambda-id> ...) Marks non-direct use-sites of common subexpression
; closure-size -> <integer> Number of free variables stored in a closure
; customizable -> <boolean> If true: all call sites are known, procedure does not escape
; simple -> <boolean> If true: procedure only calls its continuation
; explicit-rest -> <boolean> If true: procedure is called with consed rest list
; captured-variables -> (<var> ...) List of closed over variables
; inline-target -> <boolean> If true: was target of an inlining operation
(declare
(unit compiler)
(uses eval extras data-structures scrutinizer support))
(module chicken.compiler.core
(analyze-expression canonicalize-expression compute-database-statistics
initialize-compiler perform-closure-conversion perform-cps-conversion
prepare-for-code-generation build-toplevel-procedure
;; Various ugly global boolean flags that get set by the (batch) driver
all-import-libraries preserve-unchanged-import-libraries
bootstrap-mode compiler-syntax-enabled
emit-closure-info emit-profile enable-inline-files explicit-use-flag
first-analysis no-bound-checks compile-module-registration
optimize-leaf-routines standalone-executable undefine-shadowed-macros
verbose-mode local-definitions enable-specialization block-compilation
inline-locally inline-substitutions-enabled strict-variable-types
static-extensions emit-link-file
;; These are set by the (batch) driver, and read by the (c) backend
disable-stack-overflow-checking emit-trace-info external-protos-first
external-variables insert-timer-checks no-argc-checks
no-global-procedure-checks no-procedure-checks emit-debug-info
;; Other, non-boolean, flags set by (batch) driver
profiled-procedures import-libraries inline-max-size
unroll-limit
extended-bindings standard-bindings
;; Non-booleans set and read by the (batch) driver
required-libraries linked-libraries used-libraries
;; non-booleans set by the (batch) driver, and read by the (c) backend
target-heap-size target-stack-size unit-name used-units
;; bindings, set by the (c) platform
default-extended-bindings default-standard-bindings internal-bindings
;; Only read or called by the (c) backend
foreign-declarations foreign-lambda-stubs foreign-stub-argument-types
foreign-stub-argument-names foreign-stub-body foreign-stub-callback
foreign-stub-cps foreign-stub-id foreign-stub-name foreign-stub-return-type
lambda-literal-id lambda-literal-external lambda-literal-argument-count
lambda-literal-rest-argument lambda-literal-rest-argument-mode
lambda-literal-temporaries lambda-literal-float-temporaries
lambda-literal-callee-signatures lambda-literal-allocated
lambda-literal-closure-size lambda-literal-looping
lambda-literal-customizable lambda-literal-body lambda-literal-direct
;; Tables and databases that really should not be exported
constant-table immutable-constants inline-table line-number-database-2
line-number-database-size)
(import scheme
chicken.base
chicken.condition
chicken.compiler.scrutinizer
chicken.compiler.support
chicken.eval
chicken.fixnum
chicken.file
chicken.foreign
chicken.format
chicken.internal
chicken.io
chicken.keyword
chicken.load
chicken.platform
chicken.pretty-print
chicken.pathname
chicken.string
chicken.syntax
chicken.type)
(define (d arg1 . more)
(when (##sys#debug-mode?)
(if (null? more)
(pp arg1)
(apply print arg1 more))))
(define-syntax d (syntax-rules () ((_ . _) (void))))
(include "tweaks")
(include "mini-srfi-1.scm")
(define-inline (gensym-f-id) (gensym 'f_))
(define-foreign-variable installation-home c-string "C_INSTALL_SHARE_HOME")
(define-constant initial-analysis-database-size 3001)
(define-constant default-line-number-database-size 997)
(define-constant inline-table-size 301)
(define-constant constant-table-size 301)
(define-constant default-inline-max-size 20)
(define-constant default-unroll-limit 1)
;;; Global variables containing compilation parameters:
(define unit-name #f)
(define standard-bindings '())
(define extended-bindings '())
(define insert-timer-checks #t)
(define used-units '())
(define foreign-declarations '())
(define emit-trace-info #f)
(define emit-debug-info #f)
(define block-compilation #f)
(define line-number-database-size default-line-number-database-size)
(define target-heap-size #f)
(define target-stack-size #f)
(define optimize-leaf-routines #f)
(define emit-profile #f)
(define no-bound-checks #f)
(define no-argc-checks #f)
(define no-procedure-checks #f)
(define no-global-procedure-checks #f)
(define safe-globals-flag #f)
(define explicit-use-flag #f)
(define disable-stack-overflow-checking #f)
(define external-protos-first #f)
(define inline-max-size default-inline-max-size)
(define unroll-limit default-unroll-limit)
(define emit-closure-info #t)
(define undefine-shadowed-macros #t)
(define profiled-procedures #f)
(define import-libraries '())
(define all-import-libraries #f)
(define preserve-unchanged-import-libraries #t)
(define compile-module-registration #f) ; 'no | 'yes
(define standalone-executable #t)
(define local-definitions #f)
(define inline-locally #f)
(define enable-inline-files #f)
(define compiler-syntax-enabled #t)
(define bootstrap-mode #f)
(define strict-variable-types #f)
(define enable-specialization #f)
(define static-extensions #f)
(define emit-link-file #f)
;;; Other global variables:
(define verbose-mode #f)
(define original-program-size #f)
(define current-program-size 0)
(define current-analysis-database-size initial-analysis-database-size)
(define line-number-database-2 #f)
(define immutable-constants '())
(define inline-table #f)
(define constant-table #f)
(define inline-substitutions-enabled #f)
(define direct-call-ids '())
(define first-analysis #t)
(define foreign-variables '())
(define foreign-lambda-stubs '())
(define external-variables '())
(define external-to-pointer '())
(define location-pointer-map '())
(define pending-canonicalizations '())
(define defconstant-bindings '())
(define callback-names '())
(define toplevel-scope #t)
(define toplevel-lambda-id #f)
(define required-libraries '())
(define linked-libraries '())
(define used-libraries '())
(define unlikely-variables '(unquote unquote-splicing))
;;; Initial bindings. These are supplied (set!) by the (c-)platform
(define default-extended-bindings '())
(define default-standard-bindings '())
(define internal-bindings '())
;;; Initialize globals:
(define (initialize-compiler)
(if line-number-database-2
(vector-fill! line-number-database-2 '())
(set! line-number-database-2 (make-vector line-number-database-size '())) )
(if inline-table
(vector-fill! inline-table '())
(set! inline-table (make-vector inline-table-size '())) )
(if constant-table
(vector-fill! constant-table '())
(set! constant-table (make-vector constant-table-size '())) )
(reset-profile-info-vector-name!)
(clear-real-name-table!)
(clear-foreign-type-table!) )
;;; Compute general statistics from analysis database:
;
; - Returns:
;
; current-program-size
; original-program-size
; number of known variables
; number of known procedures
; number of global variables
; number of known call-sites
; number of database entries
; average bucket load
(define (compute-database-statistics db)
(let ((nprocs 0)
(nvars 0)
(nglobs 0)
(entries 0)
(nsites 0) )
(hash-table-for-each
(lambda (sym plist)
(for-each
(lambda (prop)
(set! entries (+ entries 1))
(case (car prop)
((global) (set! nglobs (+ nglobs 1)))
((value)
(set! nvars (+ nvars 1))
(if (eq? '##core#lambda (node-class (cdr prop)))
(set! nprocs (+ nprocs 1)) ) )
((call-sites) (set! nsites (+ nsites (length (cdr prop))))) ) )
plist) )
db)
(values current-program-size
original-program-size
nvars
nprocs
nglobs
nsites
entries) ) )
;;; Expand macros and canonicalize expressions:
(define (canonicalize-expression exp)
(let ((compiler-syntax '())
(forbidden-refs '()))
(define (find-id id se) ; ignores macro bindings
(cond ((null? se) #f)
((and (eq? id (caar se)) (symbol? (cdar se))) (cdar se))
(else (find-id id (cdr se)))))
(define (lookup id)
(cond ((keyword? id) id) ; DEPRECATED
((find-id id (##sys#current-environment)))
((##sys#get id '##core#macro-alias) symbol? => values)
(else id)))
(define (macro-alias var)
(let ((alias (gensym var)))
(##sys#put! alias '##core#macro-alias (lookup var))
alias) )
(define (handle-expansion-result outer-ln)
(lambda (input output)
(and-let* (((not (eq? input output)))
(ln (or (get-line input) outer-ln)))
(update-line-number-database! output ln))
output))
(define (canonicalize-body/ln ln body cs?)
(fluid-let ((chicken.syntax#expansion-result-hook
(handle-expansion-result ln)))
(##sys#canonicalize-body body (##sys#current-environment) cs?)))
(define (set-real-names! as ns)
(for-each (lambda (a n) (set-real-name! a n)) as ns) )
(define (write-to-string x)
(let ([out (open-output-string)])
(write x out)
(get-output-string out) ) )
(define (unquotify x)
(if (and (list? x)
(= 2 (length x))
(symbol? (car x))
(eq? 'quote (lookup (car x))))
(cadr x)
x) )
(define (resolve-variable x0 e dest ldest h)
(when (memq x0 unlikely-variables)
(warning
(sprintf "reference to variable `~s' possibly unintended" x0) ))
(let ((x (lookup x0)))
(d `(RESOLVE-VARIABLE: ,x0 ,x ,(map (lambda (x) (car x)) (##sys#current-environment))))
(cond ((not (symbol? x)) x0) ; syntax?
((hash-table-ref constant-table x)
=> (lambda (val) (walk val e dest ldest h #f #f)))
((hash-table-ref inline-table x)
=> (lambda (val) (walk val e dest ldest h #f #f)))
((assq x foreign-variables)
=> (lambda (fv)
(let* ((t (second fv))
(ft (final-foreign-type t))
(body `(##core#inline_ref (,(third fv) ,t))))
(walk
(foreign-type-convert-result
(finish-foreign-result ft body)
t)
e dest ldest h #f #f))))
((assq x location-pointer-map)
=> (lambda (a)
(let* ((t (third a))
(ft (final-foreign-type t))
(body `(##core#inline_loc_ref (,t) ,(second a))))
(walk
(foreign-type-convert-result
(finish-foreign-result ft body)
t)
e dest ldest h #f #f))))
((not (memq x e)) (##sys#alias-global-hook x #f h)) ; only if global
((assq x forbidden-refs) =>
(lambda (a)
(let ((ln (cdr a)))
(quit-compiling
"~acyclical reference in LETREC binding for variable `~a'"
(if ln (sprintf "(~a) - " ln) "")
(get-real-name x)))))
(else x))))
(define (emit-import-lib name mod il)
(let* ((fname (if all-import-libraries
(string-append (symbol->string name) ".import.scm")
(cdr il)))
(imps (##sys#compiled-module-registration mod #f))
(oldimps
(and (file-exists? fname)
(call-with-input-file fname read-expressions))))
(cond ((and (equal? imps oldimps) preserve-unchanged-import-libraries)
(when verbose-mode
(print "not generating import library `" fname "' for module `"
name "' because imports did not change")) )
(else
(when verbose-mode
(print "generating import library `" fname "' for module `"
name "' ..."))
(with-output-to-file fname
(lambda ()
(print ";;;; " fname " - GENERATED BY CHICKEN "
(chicken-version) " -*- Scheme -*-\n")
(for-each pretty-print imps)
(print "\n;; END OF FILE"))))) ) )
(define (walk x e dest ldest h outer-ln tl?)
(cond ((keyword? x) `(quote ,x))
((symbol? x) (resolve-variable x e dest ldest h))
((not (pair? x))
(if (constant? x)
`(quote ,x)
(##sys#syntax-error/context "illegal atomic form" x)))
((symbol? (car x))
(let ((ln (or (get-line x) outer-ln)))
(emit-syntax-trace-info x #f)
(unless (list? x)
(if ln
(##sys#syntax-error/context (sprintf "(~a) - malformed expression" ln) x)
(##sys#syntax-error/context "malformed expression" x)))
(set! ##sys#syntax-error-culprit x)
(let* ((name (lookup (car x)))
(xexpanded
(fluid-let ((chicken.syntax#expansion-result-hook
(handle-expansion-result ln)))
(expand x (##sys#current-environment) compiler-syntax-enabled))))
(cond ((not (eq? x xexpanded))
(walk xexpanded e dest ldest h ln tl?))
((hash-table-ref inline-table name)
=> (lambda (val)
(walk (cons val (cdr x)) e dest ldest h ln #f)))
(else
(case name
((##core#if)
`(if
,(walk (cadr x) e #f #f h ln #f)
,(walk (caddr x) e #f #f h ln #f)
,(if (null? (cdddr x))
'(##core#undefined)
(walk (cadddr x) e #f #f h ln #f) ) ) )
((##core#syntax ##core#quote)
`(quote ,(strip-syntax (cadr x))))
((##core#check)
(if unsafe
'(quote #t)
(walk (cadr x) e dest ldest h ln tl?) ) )
((##core#the)
`(##core#the
,(strip-syntax (cadr x))
,(caddr x)
,(walk (cadddr x) e dest ldest h ln tl?)))
((##core#typecase)
`(##core#typecase
,(or ln (cadr x))
,(walk (caddr x) e #f #f h ln tl?)
,@(map (lambda (cl)
(list (strip-syntax (car cl))
(walk (cadr cl) e dest ldest h ln tl?)))
(cdddr x))))
((##core#immutable)
(let ((c (cadadr x)))
(cond [(assoc c immutable-constants) => cdr]
[else
(let ([var (gensym 'c)])
(set! immutable-constants (alist-cons c var immutable-constants))
(mark-variable var '##compiler#always-bound)
(hide-variable var)
var) ] ) ) )
((##core#provide ##core#primitive ##core#undefined) x)
((##core#callunit)
(let ((unit (cadr x)))
(set! used-units (lset-adjoin/eq? used-units unit))
`(##core#callunit ,unit)))
((##core#inline_ref)
`(##core#inline_ref
(,(caadr x) ,(strip-syntax (cadadr x)))))
((##core#inline_loc_ref)
`(##core#inline_loc_ref
,(strip-syntax (cadr x))
,(walk (caddr x) e dest ldest h ln #f)))
((##core#require-for-syntax)
(chicken.load#load-extension (cadr x) #f #f)
'(##core#undefined))
((##core#require)
(let ((lib (cadr x))
(mod (and (pair? (cddr x)) (caddr x))))
(set! required-libraries (lset-adjoin/eq? required-libraries lib))
(walk (##sys#process-require
lib mod
(if (or (memq lib linked-libraries) static-extensions)
'static
'dynamic))
e dest ldest h ln #f)))
((##core#let)
(let* ((bindings (cadr x))
(vars (unzip1 bindings))
(aliases (map gensym vars))
(se2 (##sys#extend-se (##sys#current-environment) vars aliases))
(ln (or (get-line x) outer-ln)))
(set-real-names! aliases vars)
`(let
,(map (lambda (alias b)
(list alias (walk (cadr b) e (car b) #t h ln #f)) )
aliases bindings)
,(parameterize ((##sys#current-environment se2))
(walk (canonicalize-body/ln
ln (cddr x) compiler-syntax-enabled)
(append aliases e)
dest ldest h ln #f)) ) ) )
((##core#letrec*)
(let ((bindings (cadr x))
(body (cddr x)) )
(walk
`(##core#let
,(map (lambda (b)
(list (car b) '(##core#undefined)))
bindings)
,@(map (lambda (b)
`(##core#set! ,(car b) ,(cadr b)))
bindings)
(##core#let () ,@body) )
e dest ldest h ln #f)))
((##core#letrec)
(let* ((bindings (cadr x))
(vars (unzip1 bindings))
(tmps (map gensym vars))
(body (cddr x)) )
(walk
`(##core#let
,(map (lambda (b)
(list (car b) '(##core#undefined)))
bindings)
(##core#let
,(map (lambda (t b)
(list t `(##core#with-forbidden-refs
,vars ,ln ,(cadr b))))
tmps bindings)
,@(map (lambda (v t)
`(##core#set! ,v ,t))
vars tmps)
(##core#let () ,@body) ) )
e dest ldest h ln #f)))
((##core#with-forbidden-refs)
(let* ((loc (caddr x))
(vars (map (lambda (v)
(cons (resolve-variable v e dest
ldest h)
loc))
(cadr x))))
(fluid-let ((forbidden-refs
(append vars forbidden-refs)))
(walk (cadddr x) e dest ldest h ln #f))))
((##core#lambda)
(let ((llist (cadr x))
(obody (cddr x)) )
(when (##sys#extended-lambda-list? llist)
(set!-values
(llist obody)
(##sys#expand-extended-lambda-list
llist obody ##sys#error (##sys#current-environment)) ) )
(##sys#decompose-lambda-list
llist
(lambda (vars argc rest)
(let* ((aliases (map gensym vars))
(ln (or (get-line x) outer-ln))
(se2 (##sys#extend-se (##sys#current-environment) vars aliases))
(body (parameterize ((##sys#current-environment se2))
(let ((body0 (canonicalize-body/ln
ln obody compiler-syntax-enabled)))
(fluid-let ((forbidden-refs '()))
(walk
(if emit-debug-info
`(##core#begin
(##core#debug-event C_DEBUG_ENTRY (##core#quote ,dest))
,body0)
body0)
(append aliases e)
#f #f dest ln #f)))))
(llist2
(build-lambda-list
aliases argc
(and rest (list-ref aliases (posq rest vars))) ) )
(l `(##core#lambda ,llist2 ,body)) )
(set-real-names! aliases vars)
(cond ((or (not dest)
ldest
(assq dest (##sys#current-environment))) ; not global?
l)
((and emit-profile
(or (eq? profiled-procedures 'all)
(and
(eq? profiled-procedures 'some)
(variable-mark dest '##compiler#profile))))
(expand-profile-lambda
(if (memq dest e) ; should normally not be the case
e
(##sys#alias-global-hook dest #f #f))
llist2 body) )
(else l)))))))
((##core#let-syntax)
(parameterize
((##sys#current-environment
(append
(map (lambda (b)
(list
(car b)
(##sys#current-environment)
(##sys#ensure-transformer
(##sys#eval/meta (cadr b))
(car b))))
(cadr x) )
(##sys#current-environment)) ))
(let ((ln (or (get-line x) outer-ln)))
(walk
(canonicalize-body/ln
ln (cddr x) compiler-syntax-enabled)
e dest ldest h ln #f)) ) )
((##core#letrec-syntax)
(let* ((ms (map (lambda (b)
(list
(car b)
#f
(##sys#ensure-transformer
(##sys#eval/meta (cadr b))
(car b))))
(cadr x) ) )
(se2 (append ms (##sys#current-environment)))
(ln (or (get-line x) outer-ln)) )
(for-each
(lambda (sb)
(set-car! (cdr sb) se2) )
ms)
(parameterize ((##sys#current-environment se2))
(walk
(canonicalize-body/ln
ln (cddr x) compiler-syntax-enabled)
e dest ldest h ln #f))))
((##core#define-syntax)
(##sys#check-syntax
(car x) x
(if (pair? (cadr x))
'(_ (variable . lambda-list) . #(_ 1))
'(_ variable _) )
#f (##sys#current-environment))
(let* ((var (if (pair? (cadr x)) (caadr x) (cadr x)))
(body (if (pair? (cadr x))
`(##core#lambda ,(cdadr x) ,@(cddr x))
(caddr x)))
(name (lookup var)))
(##sys#register-syntax-export name (##sys#current-module) body)
(##sys#extend-macro-environment
name
(##sys#current-environment)
(##sys#eval/meta body))
(walk
(if ##sys#enable-runtime-macros
`(##sys#extend-macro-environment
(##core#quote ,var)
(##sys#current-environment) ,body) ;XXX possibly wrong se?
'(##core#undefined) )
e dest ldest h ln #f)) )
((##core#define-compiler-syntax)
(let* ((var (cadr x))
(body (caddr x))
(name (lookup var)))
(when body
(set! compiler-syntax
(alist-cons
name
(##sys#get name '##compiler#compiler-syntax)
compiler-syntax)))
(##sys#put!
name '##compiler#compiler-syntax
(and body
(##sys#cons
(##sys#ensure-transformer
(##sys#eval/meta body)
var)
(##sys#current-environment))))
(walk
(if ##sys#enable-runtime-macros
`(##sys#put!
(##core#syntax ,name)
'##compiler#compiler-syntax
,(and body
`(##sys#cons
(##sys#ensure-transformer
,body
(##core#quote ,var))
(##sys#current-environment))))
'(##core#undefined) )
e dest ldest h ln #f)))
((##core#let-compiler-syntax)
(let ((bs (map
(lambda (b)
(##sys#check-syntax
'let-compiler-syntax b '(symbol . #(_ 0 1)))
(let ((name (lookup (car b))))
(list
name
(and (pair? (cdr b))
(cons (##sys#ensure-transformer
(##sys#eval/meta (cadr b))
(car b))
(##sys#current-environment)))
(##sys#get name '##compiler#compiler-syntax) ) ) )
(cadr x)))
(ln (or (get-line x) outer-ln)))
(dynamic-wind
(lambda ()
(for-each
(lambda (b)
(##sys#put! (car b) '##compiler#compiler-syntax (cadr b)))
bs) )
(lambda ()
(walk
(canonicalize-body/ln
ln (cddr x) compiler-syntax-enabled)
e dest ldest h ln tl?) )
(lambda ()
(for-each
(lambda (b)
(##sys#put!
(car b)
'##compiler#compiler-syntax (caddr b)))
bs) ) ) ) )
((##core#include)
(fluid-let ((##sys#default-read-info-hook read-info-hook))
(##sys#include-forms-from-file
(cadr x)
(caddr x)
(lambda (forms)
(walk (if (pair? (cdddr x)) ; body?
(canonicalize-body/ln
ln
(append forms (cadddr x))
compiler-syntax-enabled)
`(##core#begin ,@forms))
e dest ldest h ln tl?)))))
((##core#let-module-alias)
(##sys#with-module-aliases
(map (lambda (b)
(##sys#check-syntax 'functor b '(symbol symbol))
(strip-syntax b))
(cadr x))
(lambda ()
(walk `(##core#begin ,@(cddr x)) e dest ldest h ln #t))))
((##core#module)