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ea81a808 JM |
1 | // Node vs browser behavior |
2 | var core = {}; | |
3 | if (typeof module === 'undefined') { | |
4 | var exports = core; | |
5 | } else { | |
6 | var types = require('./types'), | |
8cb5cda4 JM |
7 | readline = require('./node_readline'), |
8 | reader = require('./reader'), | |
ea81a808 JM |
9 | printer = require('./printer'); |
10 | } | |
11 | ||
12 | // Errors/Exceptions | |
13 | function mal_throw(exc) { throw exc; } | |
14 | ||
15 | ||
16 | // String functions | |
17 | function pr_str() { | |
18 | return Array.prototype.map.call(arguments,function(exp) { | |
19 | return printer._pr_str(exp, true); | |
20 | }).join(" "); | |
21 | } | |
22 | ||
23 | function str() { | |
24 | return Array.prototype.map.call(arguments,function(exp) { | |
25 | return printer._pr_str(exp, false); | |
26 | }).join(""); | |
27 | } | |
28 | ||
29 | function prn() { | |
31b44161 | 30 | printer.println.apply({}, Array.prototype.map.call(arguments,function(exp) { |
ea81a808 JM |
31 | return printer._pr_str(exp, true); |
32 | })); | |
33 | } | |
34 | ||
35 | function println() { | |
31b44161 | 36 | printer.println.apply({}, Array.prototype.map.call(arguments,function(exp) { |
ea81a808 JM |
37 | return printer._pr_str(exp, false); |
38 | })); | |
39 | } | |
40 | ||
8cb5cda4 | 41 | function slurp(f) { |
b58698b2 JM |
42 | if (typeof require !== 'undefined') { |
43 | return require('fs').readFileSync(f, 'utf-8'); | |
44 | } else { | |
45 | var req = new XMLHttpRequest(); | |
46 | req.open("GET", f, false); | |
47 | req.send(); | |
48 | if (req.status == 200) { | |
49 | return req.responseText; | |
50 | } else { | |
51 | throw new Error("Failed to slurp file: " + f); | |
52 | } | |
53 | } | |
8cb5cda4 JM |
54 | } |
55 | ||
ea81a808 | 56 | |
db4c329a JM |
57 | // Number functions |
58 | function time_ms() { return new Date().getTime(); } | |
59 | ||
60 | ||
ea81a808 JM |
61 | // Hash Map functions |
62 | function assoc(src_hm) { | |
63 | var hm = types._clone(src_hm); | |
64 | var args = [hm].concat(Array.prototype.slice.call(arguments, 1)); | |
65 | return types._assoc_BANG.apply(null, args); | |
66 | } | |
67 | ||
68 | function dissoc(src_hm) { | |
69 | var hm = types._clone(src_hm); | |
70 | var args = [hm].concat(Array.prototype.slice.call(arguments, 1)); | |
71 | return types._dissoc_BANG.apply(null, args); | |
72 | } | |
73 | ||
74 | function get(hm, key) { | |
7e9a2883 | 75 | if (hm != null && key in hm) { |
ea81a808 JM |
76 | return hm[key]; |
77 | } else { | |
78 | return null; | |
79 | } | |
80 | } | |
81 | ||
82 | function contains_Q(hm, key) { | |
83 | if (key in hm) { return true; } else { return false; } | |
84 | } | |
85 | ||
86 | function keys(hm) { return Object.keys(hm); } | |
87 | function vals(hm) { return Object.keys(hm).map(function(k) { return hm[k]; }); } | |
88 | ||
89 | ||
90 | // Sequence functions | |
91 | function cons(a, b) { return [a].concat(b); } | |
92 | ||
93 | function concat(lst) { | |
94 | lst = lst || []; | |
95 | return lst.concat.apply(lst, Array.prototype.slice.call(arguments, 1)); | |
96 | } | |
97 | ||
b8ee29b2 JM |
98 | function nth(lst, idx) { |
99 | if (idx < lst.length) { return lst[idx]; } | |
100 | else { throw new Error("nth: index out of range"); } | |
101 | } | |
ea81a808 JM |
102 | |
103 | function first(lst) { return lst[0]; } | |
104 | ||
105 | function rest(lst) { return lst.slice(1); } | |
106 | ||
107 | function empty_Q(lst) { return lst.length === 0; } | |
108 | ||
109 | function count(s) { | |
110 | if (Array.isArray(s)) { return s.length; } | |
b8ee29b2 JM |
111 | else if (s === null) { return 0; } |
112 | else { return Object.keys(s).length; } | |
ea81a808 JM |
113 | } |
114 | ||
115 | function conj(lst) { | |
116 | if (types._list_Q(lst)) { | |
117 | return Array.prototype.slice.call(arguments, 1).reverse().concat(lst); | |
118 | } else { | |
119 | var v = lst.concat(Array.prototype.slice.call(arguments, 1)); | |
120 | v.__isvector__ = true; | |
121 | return v; | |
122 | } | |
123 | } | |
124 | ||
125 | function apply(f) { | |
126 | var args = Array.prototype.slice.call(arguments, 1); | |
127 | return f.apply(f, args.slice(0, args.length-1).concat(args[args.length-1])); | |
128 | } | |
129 | ||
130 | function map(f, lst) { | |
131 | return lst.map(function(el){ return f(el); }); | |
132 | } | |
133 | ||
134 | ||
135 | // Metadata functions | |
136 | function with_meta(obj, m) { | |
137 | var new_obj = types._clone(obj); | |
138 | new_obj.__meta__ = m; | |
139 | return new_obj; | |
140 | } | |
141 | ||
142 | function meta(obj) { | |
143 | // TODO: support symbols and atoms | |
144 | if ((!types._sequential_Q(obj)) && | |
145 | (!(types._hash_map_Q(obj))) && | |
146 | (!(types._function_Q(obj)))) { | |
147 | throw new Error("attempt to get metadata from: " + types._obj_type(obj)); | |
148 | } | |
149 | return obj.__meta__; | |
150 | } | |
151 | ||
152 | ||
153 | // Atom functions | |
154 | function deref(atm) { return atm.val; } | |
155 | function reset_BANG(atm, val) { return atm.val = val; } | |
156 | function swap_BANG(atm, f) { | |
157 | var args = [atm.val].concat(Array.prototype.slice.call(arguments, 2)); | |
158 | atm.val = f.apply(f, args); | |
159 | return atm.val; | |
160 | } | |
161 | ||
162 | ||
163 | // types.ns is namespace of type functions | |
164 | var ns = {'type': types._obj_type, | |
165 | '=': types._equal_Q, | |
166 | 'throw': mal_throw, | |
167 | 'nil?': types._nil_Q, | |
168 | 'true?': types._true_Q, | |
169 | 'false?': types._false_Q, | |
170 | 'symbol': types._symbol, | |
171 | 'symbol?': types._symbol_Q, | |
b8ee29b2 JM |
172 | 'keyword': types._keyword, |
173 | 'keyword?': types._keyword_Q, | |
8cb5cda4 | 174 | |
ea81a808 JM |
175 | 'pr-str': pr_str, |
176 | 'str': str, | |
177 | 'prn': prn, | |
178 | 'println': println, | |
8cb5cda4 JM |
179 | 'readline': readline.readline, |
180 | 'read-string': reader.read_str, | |
181 | 'slurp': slurp, | |
ea81a808 JM |
182 | '<' : function(a,b){return a<b;}, |
183 | '<=' : function(a,b){return a<=b;}, | |
184 | '>' : function(a,b){return a>b;}, | |
185 | '>=' : function(a,b){return a>=b;}, | |
186 | '+' : function(a,b){return a+b;}, | |
187 | '-' : function(a,b){return a-b;}, | |
188 | '*' : function(a,b){return a*b;}, | |
189 | '/' : function(a,b){return a/b;}, | |
db4c329a | 190 | "time-ms": time_ms, |
ea81a808 JM |
191 | |
192 | 'list': types._list, | |
193 | 'list?': types._list_Q, | |
194 | 'vector': types._vector, | |
195 | 'vector?': types._vector_Q, | |
196 | 'hash-map': types._hash_map, | |
197 | 'map?': types._hash_map_Q, | |
198 | 'assoc': assoc, | |
199 | 'dissoc': dissoc, | |
200 | 'get': get, | |
201 | 'contains?': contains_Q, | |
202 | 'keys': keys, | |
203 | 'vals': vals, | |
204 | ||
205 | 'sequential?': types._sequential_Q, | |
206 | 'cons': cons, | |
207 | 'concat': concat, | |
208 | 'nth': nth, | |
209 | 'first': first, | |
210 | 'rest': rest, | |
211 | 'empty?': empty_Q, | |
212 | 'count': count, | |
ea81a808 JM |
213 | 'apply': apply, |
214 | 'map': map, | |
6301e0b6 | 215 | 'conj': conj, |
ea81a808 JM |
216 | |
217 | 'with-meta': with_meta, | |
218 | 'meta': meta, | |
219 | 'atom': types._atom, | |
220 | 'atom?': types._atom_Q, | |
221 | "deref": deref, | |
222 | "reset!": reset_BANG, | |
223 | "swap!": swap_BANG}; | |
224 | ||
225 | exports.ns = core.ns = ns; |