more array functions

1 files changed, 22 insertions, 0 deletions

diff --git a/functions.cpp b/functions.cpp
index 03b8805..261405e 100644
--- a/functions.cpp
+++ b/functions.cpp
@@ -420,6 +420,28 @@ unordered_map<string,function<void(vector<Stackitem>&,unordered_map<string,Stack
 			throw string("Argument to 'arridx' out of range");
 		S.push_back(S.back().arrval[idx.intval]);
 	}},
+	//leaves the array on the stack
+	{"arrlen",[](vector<Stackitem> &S,unordered_map<string,Stackitem> &variables){
+		BUILTIN_GUARD_STACKSIZE("arrlen",1)
+		if(S.back().type!=SIT_ARR)
+			throw string("Top of stack is not an array in builtin 'arrlen'");
+		S.emplace_back(S.back().arrval.size());
+	}},
+	//leaves the array on the stack, obviously
+	{"push",[](vector<Stackitem> &S,unordered_map<string,Stackitem> &variables){
+		BUILTIN_GUARD_STACKSIZE("push",2)
+		if(S[S.size()-2].type!=SIT_ARR)
+			throw string("Top of stack is not an array in builtin 'push'");
+		S[S.size()-2].arrval.push_back(move(S.back()));
+		S.pop_back();
+	}},
+	//leaves the array on the stack, obviously
+	{"pop",[](vector<Stackitem> &S,unordered_map<string,Stackitem> &variables){
+		BUILTIN_GUARD_STACKSIZE("pop",1)
+		if(S.back().type!=SIT_ARR)
+			throw string("Top of stack is not an array in builtin 'pop'");
+		S.back().arrval.pop_back();
+	}},
 	{"rand",[](vector<Stackitem> &S,unordered_map<string,Stackitem> &variables){
 		BUILTIN_GUARD_STACKSIZE("rand",0)
 		assert(RAND_MAX==0x7fffffff);