| 1 | ;;; -*-lisp-*- |
| 2 | ;;; |
| 3 | ;;; Implementation for property sets |
| 4 | ;;; |
| 5 | ;;; (c) 2009 Straylight/Edgeware |
| 6 | ;;; |
| 7 | |
| 8 | ;;;----- Licensing notice --------------------------------------------------- |
| 9 | ;;; |
| 10 | ;;; This file is part of the Sensible Object Design, an object system for C. |
| 11 | ;;; |
| 12 | ;;; SOD is free software; you can redistribute it and/or modify |
| 13 | ;;; it under the terms of the GNU General Public License as published by |
| 14 | ;;; the Free Software Foundation; either version 2 of the License, or |
| 15 | ;;; (at your option) any later version. |
| 16 | ;;; |
| 17 | ;;; SOD is distributed in the hope that it will be useful, |
| 18 | ;;; but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 19 | ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 20 | ;;; GNU General Public License for more details. |
| 21 | ;;; |
| 22 | ;;; You should have received a copy of the GNU General Public License |
| 23 | ;;; along with SOD; if not, write to the Free Software Foundation, |
| 24 | ;;; Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 25 | |
| 26 | (cl:in-package #:sod) |
| 27 | |
| 28 | ;;;-------------------------------------------------------------------------- |
| 29 | ;;; Conversion utilities. |
| 30 | |
| 31 | (defun string-to-symbol |
| 32 | (string &key (package *package*) (swap-case t) (swap-hyphen t)) |
| 33 | "Convert STRING to a symbol in PACKAGE. |
| 34 | |
| 35 | Parse off a `PACKAGE:' prefix from STRING if necessary, to identify the |
| 36 | package; PACKAGE is used if there isn't a prefix. A doubled colon allows |
| 37 | access to internal symbols, and will intern if necessary. Note that |
| 38 | escape characters are /not/ processed; don't put colons in package names |
| 39 | if you want to use them from SOD property sets. |
| 40 | |
| 41 | The portions of the string are modified by `frob-identifier'; the |
| 42 | arguments SWAP-CASE and SWAP-HYPHEN are passed to `frob-identifier' to |
| 43 | control this process." |
| 44 | |
| 45 | (let* ((length (length string)) |
| 46 | (colon (position #\: string))) |
| 47 | (multiple-value-bind (start internalp) |
| 48 | (cond ((not colon) (values 0 t)) |
| 49 | ((and (< (1+ colon) length) |
| 50 | (char= (char string (1+ colon)) #\:)) |
| 51 | (values (+ colon 2) t)) |
| 52 | (t |
| 53 | (values (1+ colon) nil))) |
| 54 | (when colon |
| 55 | (let* ((package-name (if (zerop colon) "KEYWORD" |
| 56 | (frob-identifier (subseq string 0 colon) |
| 57 | :swap-case swap-case |
| 58 | :swap-hyphen swap-hyphen))) |
| 59 | (found (find-package package-name))) |
| 60 | (unless found |
| 61 | (error "Unknown package `~A'" package-name)) |
| 62 | (setf package found))) |
| 63 | (let ((name (frob-identifier (subseq string start) |
| 64 | :swap-case swap-case |
| 65 | :swap-hyphen swap-hyphen))) |
| 66 | (multiple-value-bind (symbol status) |
| 67 | (funcall (if internalp #'intern #'find-symbol) name package) |
| 68 | (cond ((or internalp (eq status :external)) |
| 69 | symbol) |
| 70 | ((not status) |
| 71 | (error "Symbol `~A' not found in package `~A'" |
| 72 | name (package-name package))) |
| 73 | (t |
| 74 | (error "Symbol `~A' not external in package `~A'" |
| 75 | name (package-name package))))))))) |
| 76 | |
| 77 | (let ((truth-map (make-hash-table :test #'equalp))) |
| 78 | (dolist (string '("true" "t" "yes" "on" "yup" "verily")) |
| 79 | (setf (gethash string truth-map) t)) |
| 80 | (dolist (string '("false" "nil" "no" "off" "nope" "nowise")) |
| 81 | (setf (gethash string truth-map) nil)) |
| 82 | (defun truishp (string) |
| 83 | "Convert STRING to a boolean." |
| 84 | (multiple-value-bind (val foundp) (gethash string truth-map) |
| 85 | (if foundp val |
| 86 | (error "Unrecognized boolean value `~A'" string))))) |
| 87 | |
| 88 | ;;;-------------------------------------------------------------------------- |
| 89 | ;;; Property representation. |
| 90 | |
| 91 | (defmethod file-location ((prop property)) |
| 92 | (file-location (p-location prop))) |
| 93 | |
| 94 | ;;; Input conversions. |
| 95 | |
| 96 | (defmethod decode-property ((raw symbol)) (values :symbol raw)) |
| 97 | (defmethod decode-property ((raw integer)) (values :int raw)) |
| 98 | (defmethod decode-property ((raw string)) (values :string raw)) |
| 99 | (defmethod decode-property ((raw character)) (values :char raw)) |
| 100 | (defmethod decode-property ((raw function)) (values :func raw)) |
| 101 | (defmethod decode-property ((raw c-type)) (values :type raw)) |
| 102 | (defmethod decode-property ((raw c-fragment)) (values :c-fragment raw)) |
| 103 | |
| 104 | ;;; Keywords. |
| 105 | |
| 106 | (defmethod coerce-property-value |
| 107 | ((value symbol) (type (eql :symbol)) (wanted (eql :keyword))) |
| 108 | value) |
| 109 | |
| 110 | (defmethod coerce-property-value |
| 111 | ((value string) (type (eql :id)) (wanted (eql :keyword))) |
| 112 | (string-to-symbol value :package :keyword)) |
| 113 | |
| 114 | (defmethod coerce-property-value |
| 115 | ((value string) (type (eql :string)) (wanted (eql :keyword))) |
| 116 | (string-to-symbol value :package :keyword :swap-hyphen nil)) |
| 117 | |
| 118 | ;;; Symbols. |
| 119 | |
| 120 | (defmethod coerce-property-value |
| 121 | ((value string) (type (eql :id)) (wanted (eql :symbol))) |
| 122 | (string-to-symbol value)) |
| 123 | |
| 124 | (defmethod coerce-property-value |
| 125 | ((value string) (type (eql :string)) (wanted (eql :symbol))) |
| 126 | (string-to-symbol value :swap-hyphen nil)) |
| 127 | |
| 128 | ;;; Identifiers. |
| 129 | |
| 130 | (defmethod coerce-property-value |
| 131 | ((value string) (type (eql :string)) (wanted (eql :id))) |
| 132 | value) |
| 133 | |
| 134 | (defmethod coerce-property-value |
| 135 | ((value symbol) (type (eql :symbol)) (wanted (eql :id))) |
| 136 | (frob-identifier (symbol-name value))) |
| 137 | |
| 138 | ;;; Boolean. |
| 139 | |
| 140 | (defmethod coerce-property-value |
| 141 | ((value symbol) (type (eql :symbol)) (wanted (eql :boolean))) |
| 142 | value) |
| 143 | |
| 144 | (defmethod coerce-property-value |
| 145 | ((value string) (type (eql :id)) (wanted (eql :boolean))) |
| 146 | (truishp value)) |
| 147 | |
| 148 | (defmethod coerce-property-value |
| 149 | ((value integer) (type (eql :int)) (wanted (eql :boolean))) |
| 150 | (not (zerop value))) |
| 151 | |
| 152 | ;;; Types. |
| 153 | |
| 154 | (defmethod coerce-property-value |
| 155 | ((value string) (type (eql :id)) (wanted (eql :type))) |
| 156 | (or (and (boundp '*module-type-map*) |
| 157 | (gethash value *module-type-map*)) |
| 158 | (find-simple-c-type value) |
| 159 | (error "Unknown type `~A'" value))) |
| 160 | |
| 161 | ;;;-------------------------------------------------------------------------- |
| 162 | ;;; Property sets. |
| 163 | |
| 164 | (defmethod print-object ((pset pset) stream) |
| 165 | (print-unreadable-object (pset stream :type t) |
| 166 | (pprint-logical-block (stream nil) |
| 167 | (let ((firstp t)) |
| 168 | (pset-map (lambda (prop) |
| 169 | (cond (firstp (setf firstp nil)) |
| 170 | (t (write-char #\space stream) |
| 171 | (pprint-newline :linear stream))) |
| 172 | (format stream "~:@<~S ~@_~S ~@_~S~:>" |
| 173 | (p-name prop) (p-type prop) (p-value prop))) |
| 174 | pset))))) |
| 175 | |
| 176 | ;;;----- That's all, folks -------------------------------------------------- |