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Added slicing operation to DVector via DVector.subarray(int start,int end) method.

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Negative indices index from the end of the array.
Indices are range checked before attempting and return appropriate error when out of range.
Binding for RawArray in gdscript to access DVector.subarray() provided.
Documentation of RawArray.subarray() in classes.xml provided.
This commit is contained in:
Gau o fthe Veldt 2016-07-17 16:43:10 -07:00
parent 221cb58382
commit 82d4cb5114
3 changed files with 41 additions and 0 deletions
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28
core/dvector.h
View file

@ -262,6 +262,34 @@ public:
w[bs+i]=r[i];
}
DVector<T> subarray(int p_from, int p_to) {
if (p_from<0) {
p_from=size()+p_from;
}
if (p_to<0) {
p_to=size()+p_to;
}
if (p_from<0 || p_from>=size()) {
DVector<T>& aux=*((DVector<T>*)0); // nullreturn
ERR_FAIL_COND_V(p_from<0 || p_from>=size(),aux)
}
if (p_to<0 || p_to>=size()) {
DVector<T>& aux=*((DVector<T>*)0); // nullreturn
ERR_FAIL_COND_V(p_to<0 || p_to>=size(),aux)
}
DVector<T> slice;
int span=1 + p_to - p_from;
slice.resize(span);
Read r = read();
Write w = slice.write();
for (int i=0; i<span; ++i) {
w[i] = r[p_from+i];
}
return slice;
}
Error insert(int p_pos,const T& p_val) {

2
core/variant_call.cpp
View file

@ -517,6 +517,7 @@ static void _call_##m_type##_##m_method(Variant& r_ret,Variant& p_self,const Var
VCALL_LOCALMEM1(ByteArray,append);
VCALL_LOCALMEM1(ByteArray,append_array);
VCALL_LOCALMEM0(ByteArray,invert);
VCALL_LOCALMEM2R(ByteArray,subarray);
VCALL_LOCALMEM0R(IntArray,size);
VCALL_LOCALMEM2(IntArray,set);
@ -1532,6 +1533,7 @@ _VariantCall::addfunc(Variant::m_vtype,Variant::m_ret,_SCS(#m_method),VCALL(m_cl
ADDFUNC2(RAW_ARRAY,INT,ByteArray,insert,INT,"idx",INT,"byte",varray());
ADDFUNC1(RAW_ARRAY,NIL,ByteArray,resize,INT,"idx",varray());
ADDFUNC0(RAW_ARRAY,NIL,ByteArray,invert,varray());
ADDFUNC2(RAW_ARRAY,RAW_ARRAY,ByteArray,subarray,INT,"from",INT,"to",varray());
ADDFUNC0(RAW_ARRAY,STRING,ByteArray,get_string_from_ascii,varray());
ADDFUNC0(RAW_ARRAY,STRING,ByteArray,get_string_from_utf8,varray());

11
doc/base/classes.xml
View file

@ -30544,6 +30544,17 @@
Return the size of the array.
</description>
</method>
<method name="subarray">
<return type="RawArray">
</return>
<argument index="0" name="from" type="int">
</argument>
<argument index="1" name="to" type="int">
</argument>
<description>
Returns the slice of the [RawArray] between indices (inclusive) as a new [RawArray]. Any negative index is considered to be from the end of the array.
</description>
</method>
</methods>
<constants>
</constants>