Commit | Line | Data |
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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'), | |
7 | printer = require('./printer'); | |
8 | } | |
9 | ||
10 | // Errors/Exceptions | |
11 | function mal_throw(exc) { throw exc; } | |
12 | ||
13 | ||
14 | // String functions | |
15 | function pr_str() { | |
16 | return Array.prototype.map.call(arguments,function(exp) { | |
17 | return printer._pr_str(exp, true); | |
18 | }).join(" "); | |
19 | } | |
20 | ||
21 | function str() { | |
22 | return Array.prototype.map.call(arguments,function(exp) { | |
23 | return printer._pr_str(exp, false); | |
24 | }).join(""); | |
25 | } | |
26 | ||
27 | function prn() { | |
28 | printer.print.apply({}, Array.prototype.map.call(arguments,function(exp) { | |
29 | return printer._pr_str(exp, true); | |
30 | })); | |
31 | } | |
32 | ||
33 | function println() { | |
34 | printer.print.apply({}, Array.prototype.map.call(arguments,function(exp) { | |
35 | return printer._pr_str(exp, false); | |
36 | })); | |
37 | } | |
38 | ||
39 | ||
40 | // Hash Map functions | |
41 | function assoc(src_hm) { | |
42 | var hm = types._clone(src_hm); | |
43 | var args = [hm].concat(Array.prototype.slice.call(arguments, 1)); | |
44 | return types._assoc_BANG.apply(null, args); | |
45 | } | |
46 | ||
47 | function dissoc(src_hm) { | |
48 | var hm = types._clone(src_hm); | |
49 | var args = [hm].concat(Array.prototype.slice.call(arguments, 1)); | |
50 | return types._dissoc_BANG.apply(null, args); | |
51 | } | |
52 | ||
53 | function get(hm, key) { | |
54 | if (key in hm) { | |
55 | return hm[key]; | |
56 | } else { | |
57 | return null; | |
58 | } | |
59 | } | |
60 | ||
61 | function contains_Q(hm, key) { | |
62 | if (key in hm) { return true; } else { return false; } | |
63 | } | |
64 | ||
65 | function keys(hm) { return Object.keys(hm); } | |
66 | function vals(hm) { return Object.keys(hm).map(function(k) { return hm[k]; }); } | |
67 | ||
68 | ||
69 | // Sequence functions | |
70 | function cons(a, b) { return [a].concat(b); } | |
71 | ||
72 | function concat(lst) { | |
73 | lst = lst || []; | |
74 | return lst.concat.apply(lst, Array.prototype.slice.call(arguments, 1)); | |
75 | } | |
76 | ||
77 | function nth(lst, idx) { return lst[idx]; } | |
78 | ||
79 | function first(lst) { return lst[0]; } | |
80 | ||
81 | function rest(lst) { return lst.slice(1); } | |
82 | ||
83 | function empty_Q(lst) { return lst.length === 0; } | |
84 | ||
85 | function count(s) { | |
86 | if (Array.isArray(s)) { return s.length; } | |
87 | else { return Object.keys(s).length; } | |
88 | } | |
89 | ||
90 | function conj(lst) { | |
91 | if (types._list_Q(lst)) { | |
92 | return Array.prototype.slice.call(arguments, 1).reverse().concat(lst); | |
93 | } else { | |
94 | var v = lst.concat(Array.prototype.slice.call(arguments, 1)); | |
95 | v.__isvector__ = true; | |
96 | return v; | |
97 | } | |
98 | } | |
99 | ||
100 | function apply(f) { | |
101 | var args = Array.prototype.slice.call(arguments, 1); | |
102 | return f.apply(f, args.slice(0, args.length-1).concat(args[args.length-1])); | |
103 | } | |
104 | ||
105 | function map(f, lst) { | |
106 | return lst.map(function(el){ return f(el); }); | |
107 | } | |
108 | ||
109 | ||
110 | // Metadata functions | |
111 | function with_meta(obj, m) { | |
112 | var new_obj = types._clone(obj); | |
113 | new_obj.__meta__ = m; | |
114 | return new_obj; | |
115 | } | |
116 | ||
117 | function meta(obj) { | |
118 | // TODO: support symbols and atoms | |
119 | if ((!types._sequential_Q(obj)) && | |
120 | (!(types._hash_map_Q(obj))) && | |
121 | (!(types._function_Q(obj)))) { | |
122 | throw new Error("attempt to get metadata from: " + types._obj_type(obj)); | |
123 | } | |
124 | return obj.__meta__; | |
125 | } | |
126 | ||
127 | ||
128 | // Atom functions | |
129 | function deref(atm) { return atm.val; } | |
130 | function reset_BANG(atm, val) { return atm.val = val; } | |
131 | function swap_BANG(atm, f) { | |
132 | var args = [atm.val].concat(Array.prototype.slice.call(arguments, 2)); | |
133 | atm.val = f.apply(f, args); | |
134 | return atm.val; | |
135 | } | |
136 | ||
137 | ||
138 | // types.ns is namespace of type functions | |
139 | var ns = {'type': types._obj_type, | |
140 | '=': types._equal_Q, | |
141 | 'throw': mal_throw, | |
142 | 'nil?': types._nil_Q, | |
143 | 'true?': types._true_Q, | |
144 | 'false?': types._false_Q, | |
145 | 'symbol': types._symbol, | |
146 | 'symbol?': types._symbol_Q, | |
147 | 'pr-str': pr_str, | |
148 | 'str': str, | |
149 | 'prn': prn, | |
150 | 'println': println, | |
151 | '<' : function(a,b){return a<b;}, | |
152 | '<=' : function(a,b){return a<=b;}, | |
153 | '>' : function(a,b){return a>b;}, | |
154 | '>=' : function(a,b){return a>=b;}, | |
155 | '+' : function(a,b){return a+b;}, | |
156 | '-' : function(a,b){return a-b;}, | |
157 | '*' : function(a,b){return a*b;}, | |
158 | '/' : function(a,b){return a/b;}, | |
159 | ||
160 | 'list': types._list, | |
161 | 'list?': types._list_Q, | |
162 | 'vector': types._vector, | |
163 | 'vector?': types._vector_Q, | |
164 | 'hash-map': types._hash_map, | |
165 | 'map?': types._hash_map_Q, | |
166 | 'assoc': assoc, | |
167 | 'dissoc': dissoc, | |
168 | 'get': get, | |
169 | 'contains?': contains_Q, | |
170 | 'keys': keys, | |
171 | 'vals': vals, | |
172 | ||
173 | 'sequential?': types._sequential_Q, | |
174 | 'cons': cons, | |
175 | 'concat': concat, | |
176 | 'nth': nth, | |
177 | 'first': first, | |
178 | 'rest': rest, | |
179 | 'empty?': empty_Q, | |
180 | 'count': count, | |
181 | 'conj': conj, | |
182 | 'apply': apply, | |
183 | 'map': map, | |
184 | ||
185 | 'with-meta': with_meta, | |
186 | 'meta': meta, | |
187 | 'atom': types._atom, | |
188 | 'atom?': types._atom_Q, | |
189 | "deref": deref, | |
190 | "reset!": reset_BANG, | |
191 | "swap!": swap_BANG}; | |
192 | ||
193 | exports.ns = core.ns = ns; |