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More string methods

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ZZYZX 2017-02-06 13:18:10 +02:00 committed by Christoph Oelckers
parent d90f2ba1fa
commit 124d025131
2 changed files with 51 additions and 2 deletions
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44
src/scripting/thingdef_data.cpp
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@ -1137,3 +1137,47 @@ DEFINE_ACTION_FUNCTION(FStringStruct, AppendFormat)
(*self) += s;
return 0;
}
DEFINE_ACTION_FUNCTION(FStringStruct, Mid)
{
PARAM_SELF_STRUCT_PROLOGUE(FString);
PARAM_INT(pos);
PARAM_INT(len);
// validate. we don't want to crash if someone passes negative values.
// with size_t it's handled naturally I think, as it's unsigned, but not in ZScript.
if (pos < 0) pos = 0;
if (len < 0) len = 0;
int slen = self->Len();
if (pos > slen) pos = slen - 1;
if (pos + len > slen)
len = slen - pos;
FString s = self->Mid(pos, len);
ACTION_RETURN_STRING(s);
}
DEFINE_ACTION_FUNCTION(FStringStruct, Len)
{
PARAM_SELF_STRUCT_PROLOGUE(FString);
ACTION_RETURN_INT(self->Len());
}
// CharAt and CharCodeAt is how JS does it, and JS is similar here in that it doesn't have char type as int.
DEFINE_ACTION_FUNCTION(FStringStruct, CharAt)
{
PARAM_SELF_STRUCT_PROLOGUE(FString);
PARAM_INT(pos);
int slen = self->Len();
if (pos < 0 || pos >= slen)
ACTION_RETURN_STRING("");
ACTION_RETURN_STRING(FString((*self)[pos]));
}
DEFINE_ACTION_FUNCTION(FStringStruct, CharCodeAt)
{
PARAM_SELF_STRUCT_PROLOGUE(FString);
PARAM_INT(pos);
int slen = self->Len();
if (pos < 0 || pos >= slen)
ACTION_RETURN_INT(0);
ACTION_RETURN_INT((*self)[pos]);
}

7
wadsrc/static/zscript/base.txt
View file

@ -417,9 +417,14 @@ enum EPickStart
// Although String is a builtin type, this is a convenient way to attach methods to it.
struct StringStruct native
{
native void Replace(String pattern, String replacement);
native static vararg String Format(String fmt, ...);
native vararg void AppendFormat(String fmt, ...);
native void Replace(String pattern, String replacement);
native String Mid(int pos = 0, int len = 2147483647);
native int Len();
native String CharAt(int pos);
native int CharCodeAt(int pos);
}
class Floor : Thinker native