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121
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TYPE_LESS_EQUAL,
TYPE_GREATER,
TYPE_GREATER_EQUAL,
TYPE_ADD,
TYPE_MODULO,
TYPE_AND,
TYPE_OR,
TYPE_NOT
} type;
id var, first, second;
size_t stackSize;
if ([atom isEqual: @"=="]) {
type = TYPE_EQUAL;
} else if ([atom isEqual: @"!="]) {
|
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>
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107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
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TYPE_LESS_EQUAL,
TYPE_GREATER,
TYPE_GREATER_EQUAL,
TYPE_ADD,
TYPE_MODULO,
TYPE_AND,
TYPE_OR,
TYPE_NOT,
TYPE_IS_REAL
} type;
id var, first, second;
size_t stackSize;
if ([atom isEqual: @"=="]) {
type = TYPE_EQUAL;
} else if ([atom isEqual: @"!="]) {
|
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142
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149
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161
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169
|
type = TYPE_MODULO;
} else if ([atom isEqual: @"&&"]) {
type = TYPE_AND;
} else if ([atom isEqual: @"||"]) {
type = TYPE_OR;
} else if ([atom isEqual: @"!"]) {
type = TYPE_NOT;
} else {
of_unichar_t firstCharacter =
[atom characterAtIndex: 0];
if (firstCharacter >= '0' && firstCharacter <= '9')
type = TYPE_LITERAL;
else
type = TYPE_VARIABLE;
}
switch (type) {
case TYPE_LITERAL:
[stack addObject:
[OFNumber numberWithIntMax: atom.decimalValue]];
break;
case TYPE_VARIABLE:
if ((var = [variables objectForKey: atom]) == nil)
@throw [OFInvalidFormatException exception];
if ([var isKindOfClass: [OFString class]])
var = [OFNumber numberWithIntMax:
[var decimalValue]];
[stack addObject: var];
break;
case TYPE_EQUAL:
case TYPE_NOT_EQUAL:
case TYPE_LESS:
case TYPE_LESS_EQUAL:
|
>
>
|
>
|
|
|
|
135
136
137
138
139
140
141
142
143
144
145
146
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149
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173
|
type = TYPE_MODULO;
} else if ([atom isEqual: @"&&"]) {
type = TYPE_AND;
} else if ([atom isEqual: @"||"]) {
type = TYPE_OR;
} else if ([atom isEqual: @"!"]) {
type = TYPE_NOT;
} else if ([atom isEqual: @"."]) {
type = TYPE_IS_REAL;
} else {
of_unichar_t firstCharacter =
[atom characterAtIndex: 0];
if ((firstCharacter >= '0' && firstCharacter <= '9') ||
firstCharacter == '-')
type = TYPE_LITERAL;
else
type = TYPE_VARIABLE;
}
switch (type) {
case TYPE_LITERAL:
[stack addObject:
[OFNumber numberWithDouble: atom.doubleValue]];
break;
case TYPE_VARIABLE:
if ((var = [variables objectForKey: atom]) == nil)
@throw [OFInvalidFormatException exception];
if ([var isKindOfClass: [OFString class]])
var = [OFNumber numberWithDouble:
[var doubleValue]];
[stack addObject: var];
break;
case TYPE_EQUAL:
case TYPE_NOT_EQUAL:
case TYPE_LESS:
case TYPE_LESS_EQUAL:
|
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200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
|
compare: second] == OF_ORDERED_DESCENDING];
break;
case TYPE_GREATER_EQUAL:
var = [OFNumber numberWithBool: [first
compare: second] != OF_ORDERED_ASCENDING];
break;
case TYPE_ADD:
var = [OFNumber numberWithIntMax:
[first intMaxValue] + [second intMaxValue]];
break;
case TYPE_MODULO:
var = [OFNumber numberWithIntMax:
[first intMaxValue] % [second intMaxValue]];
break;
case TYPE_AND:
var = [OFNumber numberWithBool:
|
|
|
|
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
|
compare: second] == OF_ORDERED_DESCENDING];
break;
case TYPE_GREATER_EQUAL:
var = [OFNumber numberWithBool: [first
compare: second] != OF_ORDERED_ASCENDING];
break;
case TYPE_ADD:
var = [OFNumber numberWithDouble:
[first doubleValue] + [second doubleValue]];
break;
case TYPE_MODULO:
var = [OFNumber numberWithIntMax:
[first intMaxValue] % [second intMaxValue]];
break;
case TYPE_AND:
var = [OFNumber numberWithBool:
|
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231
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233
234
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236
237
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240
241
242
|
[stack replaceObjectAtIndex: stackSize - 2
withObject: var];
[stack removeLastObject];
break;
case TYPE_NOT:
stackSize = stack.count;
first = [OFNumber numberWithBool:
![stack.lastObject boolValue]];
[stack replaceObjectAtIndex: stackSize - 1
withObject: first];
break;
}
}
if (stack.count != 1)
@throw [OFInvalidFormatException exception];
|
>
>
>
>
>
|
|
>
>
>
>
>
>
>
>
>
|
|
228
229
230
231
232
233
234
235
236
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238
239
240
241
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243
244
245
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247
248
249
250
251
252
253
254
255
256
257
258
259
260
|
[stack replaceObjectAtIndex: stackSize - 2
withObject: var];
[stack removeLastObject];
break;
case TYPE_NOT:
case TYPE_IS_REAL:
stackSize = stack.count;
first = stack.lastObject;
switch (type) {
case TYPE_NOT:
var = [OFNumber numberWithBool:
![first boolValue]];
break;
case TYPE_IS_REAL:
var = [OFNumber numberWithBool:
[first doubleValue] != [first intMaxValue]];
break;
default:
OF_ENSURE(0);
}
[stack replaceObjectAtIndex: stackSize - 1
withObject: var];
break;
}
}
if (stack.count != 1)
@throw [OFInvalidFormatException exception];
|