-;;;; Copyright (C) 2009, 2010 Free Software Foundation, Inc.
+;;;; Copyright (C) 2009, 2010, 2013 Free Software Foundation, Inc.
;;;;
;;;; This library is free software; you can redistribute it and/or
;;;; modify it under the terms of the GNU Lesser General Public
\f
(define-module (system xref)
- #:use-module (system base pmatch)
#:use-module (system base compile)
#:use-module (system vm program)
+ #:use-module (system vm disassembler)
+ #:use-module (ice-9 match)
#:use-module (srfi srfi-1)
#:export (*xref-ignored-modules*
procedure-callees
- procedure-callers))
+ procedure-callers
+ source-closures
+ source-procedures))
+
+;;;
+;;; The cross-reference database: who calls whom.
+;;;
+
+(define (nested-procedures prog)
+ (define (cons-uniq x y)
+ (if (memq x y) y (cons x y)))
+ (if (program? prog)
+ (reverse
+ (fold-program-code (lambda (elt out)
+ (match elt
+ (('static-ref dst proc)
+ (if (program? proc)
+ (fold cons-uniq
+ (cons proc out)
+ (nested-procedures prog))
+ out))
+ (_ out)))
+ (list prog)
+ prog))
+ (list prog)))
(define (program-callee-rev-vars prog)
(define (cons-uniq x y)
(if (memq x y) y (cons x y)))
- (cond
- ((program-objects prog)
- => (lambda (objects)
- (let ((n (vector-length objects))
- (progv (make-vector (vector-length objects) #f))
- (asm (decompile (program-objcode prog) #:to 'assembly)))
- (pmatch asm
- ((load-program ,labels ,len . ,body)
- (for-each
- (lambda (x)
- (pmatch x
- ((toplevel-ref ,n) (vector-set! progv n #t))
- ((toplevel-set ,n) (vector-set! progv n #t))))
- body)))
- (let lp ((i 0) (out '()))
- (cond
- ((= i n) out)
- ((program? (vector-ref objects i))
- (lp (1+ i)
- (fold cons-uniq out
- (program-callee-rev-vars (vector-ref objects i)))))
- ((vector-ref progv i)
- (let ((obj (vector-ref objects i)))
- (if (variable? obj)
- (lp (1+ i) (cons-uniq obj out))
- ;; otherwise it's an unmemoized binding
- (pmatch obj
- (,sym (guard (symbol? sym))
- (let ((v (module-variable (or (program-module prog)
- the-root-module)
- sym)))
- (lp (1+ i) (if v (cons-uniq v out) out))))
- ((,mod ,sym ,public?)
- ;; hm, hacky.
- (let* ((m (nested-ref-module (resolve-module '() #f)
- mod))
- (v (and m
- (module-variable
- (if public?
- (module-public-interface m)
- m)
- sym))))
- (lp (1+ i)
- (if v (cons-uniq v out) out))))))))
- (else (lp (1+ i) out)))))))
- (else '())))
+ (fold (lambda (prog out)
+ (fold-program-code
+ (lambda (elt out)
+ (match elt
+ (('toplevel-box dst var mod sym bound?)
+ (let ((var (or var (and mod (module-variable mod sym)))))
+ (if var
+ (cons-uniq var out)
+ out)))
+ (('module-box dst var public? mod-name sym bound?)
+ (let ((var (or var
+ (module-variable (if public?
+ (resolve-interface mod-name)
+ (resolve-module mod-name))
+ sym))))
+ (if var
+ (cons-uniq var out)
+ out)))
+ (_ out)))
+ out
+ prog))
+ '()
+ (nested-procedures prog)))
(define (procedure-callee-rev-vars proc)
(cond
(define (ensure-callers-db mod-name)
(let ((mod (and mod-name (resolve-module mod-name)))
(visited #f))
- (define (visit-variable var recurse mod-name)
+ (define (visit-variable var mod-name)
(if (variable-bound? var)
(let ((x (variable-ref var)))
(cond
(for-each (lambda (callee)
(add-caller callee x mod-name))
callees)
- (add-callees callees mod-name)))
- ((and recurse (module? x))
- (visit-module x #t))))))
+ (add-callees callees mod-name)))))))
- (define (visit-module mod recurse)
+ (define (visit-module mod)
(if visited (hashq-set! visited mod #t))
(if (not (memq on-module-modified (module-observers mod)))
(module-observe mod on-module-modified))
(let ((name (module-name mod)))
(module-for-each (lambda (sym var)
- (visit-variable var recurse name))
+ (visit-variable var name))
mod)))
+ (define (visit-submodules mod)
+ (hash-for-each
+ (lambda (name sub)
+ (if (not (and visited (hashq-ref visited sub)))
+ (begin
+ (visit-module sub)
+ (visit-submodules sub))))
+ (module-submodules mod)))
+
(cond ((and (not mod-name) (not *callers-db*))
(set! *callers-db* (make-hash-table 1000))
(set! visited (make-hash-table 1000))
- (visit-module the-root-module #t))
- (mod-name (visit-module mod #f)))))
+ (visit-submodules (resolve-module '() #f)))
+ (mod-name (visit-module mod)))))
(define (procedure-callers var)
"Returns an association list, keyed by module name, of known callers
(let ((v (cond ((variable? var) var)
((symbol? var) (module-variable (current-module) var))
(else
- (pmatch var
- ((,modname . ,sym)
+ (match var
+ ((modname . sym)
(module-variable (resolve-module modname) sym))
- (else
+ (_
(error "expected a variable, symbol, or (modname . sym)" var)))))))
(untaint-modules)
(hashq-ref *callers-db* v '())))
+
+\f
+
+;;;
+;;; The source database: procedures defined at a given source location.
+;;;
+
+;; FIXME: refactor to share code with the xref database.
+
+;; ((ip file line . col) ...)
+(define (procedure-sources proc)
+ (cond
+ ((program? proc) (program-sources proc))
+ (else '())))
+
+;; file -> line -> (proc ...)
+(define *closure-sources-db* #f)
+;; file -> line -> (proc ...)
+(define *sources-db* #f)
+;; module-name -> proc -> sources
+(define *module-sources-db* (make-hash-table))
+;; (module-name ...)
+(define *tainted-sources* '())
+
+(define (on-source-modified m)
+ (let ((name (module-name m)))
+ (if (and (not (member name *xref-ignored-modules*))
+ (not (member name *tainted-sources*))
+ (pair? name))
+ (set! *tainted-sources* (cons name *tainted-sources*)))))
+
+(define (add-source proc file line db)
+ (let ((file-table (or (hash-ref db file)
+ (let ((table (make-hash-table)))
+ (hash-set! db file table)
+ table))))
+ (hashv-set! file-table
+ line
+ (cons proc (hashv-ref file-table line '())))))
+
+(define (forget-source proc file line db)
+ (let ((file-table (hash-ref db file)))
+ (if file-table
+ (let ((procs (delq proc (hashv-ref file-table line '()))))
+ (if (pair? procs)
+ (hashv-set! file-table line procs)
+ (hashv-remove! file-table line))))))
+
+(define (add-sources proc mod-name db)
+ (let ((sources (procedure-sources proc)))
+ (if (pair? sources)
+ (begin
+ ;; Add proc to *module-sources-db*, for book-keeping.
+ (hashq-set! (or (hash-ref *module-sources-db* mod-name)
+ (let ((table (make-hash-table)))
+ (hash-set! *module-sources-db* mod-name table)
+ table))
+ proc
+ sources)
+ ;; Actually add the source entries.
+ (for-each (lambda (source)
+ (match source
+ ((ip file line . col)
+ (add-source proc file line db))
+ (_ (error "unexpected source format" source))))
+ sources)))
+ ;; Add source entries for nested procedures.
+ (for-each (lambda (obj)
+ (add-sources obj mod-name *closure-sources-db*))
+ (cdr (nested-procedures proc)))))
+
+(define (forget-sources proc mod-name db)
+ (let ((mod-table (hash-ref *module-sources-db* mod-name)))
+ (when mod-table
+ ;; Forget source entries.
+ (for-each (lambda (source)
+ (match source
+ ((ip file line . col)
+ (forget-source proc file line db))
+ (_ (error "unexpected source format" source))))
+ (hashq-ref mod-table proc '()))
+ ;; Forget the proc.
+ (hashq-remove! mod-table proc)
+ ;; Forget source entries for nested procedures.
+ (for-each (lambda (obj)
+ (forget-sources obj mod-name *closure-sources-db*))
+ (cdr (nested-procedures proc))))))
+
+(define (untaint-sources)
+ (define (untaint m)
+ (for-each (lambda (proc) (forget-sources proc m *sources-db*))
+ (cond
+ ((hash-ref *module-sources-db* m)
+ => (lambda (table)
+ (hash-for-each (lambda (proc sources) proc) table)))
+ (else '())))
+ (ensure-sources-db m))
+ (ensure-sources-db #f)
+ (for-each untaint *tainted-sources*)
+ (set! *tainted-sources* '()))
+
+(define (ensure-sources-db mod-name)
+ (define (visit-module mod)
+ (if (not (memq on-source-modified (module-observers mod)))
+ (module-observe mod on-source-modified))
+ (let ((name (module-name mod)))
+ (module-for-each
+ (lambda (sym var)
+ (if (variable-bound? var)
+ (let ((x (variable-ref var)))
+ (if (procedure? x)
+ (add-sources x name *sources-db*)))))
+ mod)))
+
+ (define visit-submodules
+ (let ((visited #f))
+ (lambda (mod)
+ (if (not visited)
+ (set! visited (make-hash-table)))
+ (hash-for-each
+ (lambda (name sub)
+ (if (not (hashq-ref visited sub))
+ (begin
+ (hashq-set! visited sub #t)
+ (visit-module sub)
+ (visit-submodules sub))))
+ (module-submodules mod)))))
+
+ (cond ((and (not mod-name) (not *sources-db*) (not *closure-sources-db*))
+ (set! *closure-sources-db* (make-hash-table 1000))
+ (set! *sources-db* (make-hash-table 1000))
+ (visit-submodules (resolve-module '() #f)))
+ (mod-name (visit-module (resolve-module mod-name)))))
+
+(define (lines->ranges file-table)
+ (let ((ranges (make-hash-table)))
+ (hash-for-each
+ (lambda (line procs)
+ (for-each
+ (lambda (proc)
+ (cond
+ ((hashq-ref ranges proc)
+ => (lambda (pair)
+ (if (< line (car pair))
+ (set-car! pair line))
+ (if (> line (cdr pair))
+ (set-cdr! pair line))))
+ (else
+ (hashq-set! ranges proc (cons line line)))))
+ procs))
+ file-table)
+ (sort! (hash-map->list cons ranges)
+ (lambda (x y) (< (cadr x) (cadr y))))))
+
+(define* (lookup-source-procedures canon-file line db)
+ (let ((file-table (hash-ref db canon-file)))
+ (let lp ((ranges (if file-table (lines->ranges file-table) '()))
+ (procs '()))
+ (cond
+ ((null? ranges) (reverse procs))
+ ((<= (cadar ranges) line (cddar ranges))
+ (lp (cdr ranges) (cons (caar ranges) procs)))
+ (else
+ (lp (cdr ranges) procs))))))
+
+(define* (source-closures file line #:key (canonicalization 'relative))
+ (ensure-sources-db #f)
+ (let* ((port (with-fluids ((%file-port-name-canonicalization canonicalization))
+ (false-if-exception (open-input-file file))))
+ (file (if port (port-filename port) file)))
+ (lookup-source-procedures file line *closure-sources-db*)))
+
+(define* (source-procedures file line #:key (canonicalization 'relative))
+ (ensure-sources-db #f)
+ (let* ((port (with-fluids ((%file-port-name-canonicalization canonicalization))
+ (false-if-exception (open-input-file file))))
+ (file (if port (port-filename port) file)))
+ (lookup-source-procedures file line *sources-db*)))
HCoop / bpt / guile.git / blobdiff