130 lines
3.9 KiB
Text
130 lines
3.9 KiB
Text
# Copyright (C) 2014 onox
|
|
#
|
|
# This program is free software: you can redistribute it and/or modify
|
|
# it under the terms of the GNU General Public License as published by
|
|
# the Free Software Foundation; either version 2 of the License, or
|
|
# (at your option) any later version.
|
|
#
|
|
# This program is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public License
|
|
# along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
var min = func(a, b) { a < b ? a : b }
|
|
var max = func(a, b) { a > b ? a : b }
|
|
|
|
var Vector = {
|
|
|
|
new: func (vector=nil) {
|
|
var m = {
|
|
parents: [Vector]
|
|
};
|
|
if (vector == nil) {
|
|
vector = [];
|
|
}
|
|
m.vector = vector;
|
|
return m;
|
|
},
|
|
|
|
size: func {
|
|
# Return the number of items in the vector
|
|
|
|
return size(me.vector);
|
|
},
|
|
|
|
clear: func {
|
|
# Remove all items from the vector, resulting in an empty vector
|
|
|
|
me.vector = [];
|
|
},
|
|
|
|
append: func (item) {
|
|
# Append the given item at the end of the vector
|
|
|
|
append(me.vector, item);
|
|
},
|
|
|
|
extend: func (other_vector) {
|
|
# Extend the vector with another vector, appending the items of
|
|
# the other vector to this vector
|
|
|
|
me.vector = me.vector ~ other_vector;
|
|
},
|
|
|
|
insert: func (index, item) {
|
|
# Insert the given item at the given index before the old item
|
|
# at that index. Any index greater than n-1 where n is the size of
|
|
# the vector will append the given item at the end. Any index smaller
|
|
# or equal to -n will insert the item at the beginning of the vector.
|
|
#
|
|
# For example, if the vector contains ["a", "b", "c"], then the
|
|
# following operations can happen:
|
|
#
|
|
# insert(0, "d") => ["d", "a", "b", "c"]
|
|
# insert(2, "e") => ["a", "b", "e", "c"]
|
|
# insert(3, "f") => ["a", "b", "c", "f"]
|
|
# insert(-3, "g") => ["f", "a", "b", "c"]
|
|
|
|
index = min(index, me.size());
|
|
if (index < 0) {
|
|
index = max(0, me.size() + index);
|
|
}
|
|
me.vector = subvec(me.vector, 0, index) ~ [item] ~ subvec(me.vector, index);
|
|
},
|
|
|
|
pop: func (index=nil) {
|
|
# Remove and return the item at the given index. If index
|
|
# is not given, then it will remove and return the last item.
|
|
# A negative index represents the position from the end.
|
|
#
|
|
# For example, if the vector contains ["a", "b", "c"], then the
|
|
# following operations can happen:
|
|
#
|
|
# pop(0) => "a"
|
|
# pop(2) => "c"
|
|
# pop(-1) => "c"
|
|
# pop(-3) => "a"
|
|
#
|
|
# Thus the range is -n .. n-1 where n is the size of the vector.
|
|
# IndexError is raised if the index is out of range.
|
|
|
|
if (index != nil) {
|
|
if (index < -me.size() or index >= me.size()) {
|
|
die("IndexError: index out of range");
|
|
}
|
|
|
|
if (index < 0) {
|
|
index = me.size() + index;
|
|
}
|
|
var item = me.vector[index];
|
|
me.vector = subvec(me.vector, 0, index) ~ subvec(me.vector, index + 1);
|
|
return item;
|
|
}
|
|
else {
|
|
return pop(me.vector);
|
|
}
|
|
},
|
|
|
|
index: func (item) {
|
|
# Return first index of the given item. Raises a ValueError
|
|
# if the item is not in the vector.
|
|
|
|
forindex (var index; me.vector) {
|
|
if (me.vector[index] == item) {
|
|
return index;
|
|
}
|
|
};
|
|
die("ValueError: item not in the vector");
|
|
},
|
|
|
|
remove: func (item) {
|
|
# Remove the first occurrence of the given item. Raises a
|
|
# ValueError if the item is not present in the vector.
|
|
|
|
me.pop(me.index(item));
|
|
}
|
|
|
|
};
|