leftside dict/list, host method calling implemeted Todo, dms functions

DMS/DMS.cpp

@@ -2,10 +2,22 @@
 //#include <windows.h>
 #include <iostream>
 using namespace dms;
-typedef void(*FNPTR)();
+//typedef void(*FNPTR)();
 
+value* invokeTest(dms_state* state, dms_args* args) {
+    utils::print(args->args[0]->getPrintable());
+    return buildValue("I work!");
+}
 int main()
 {
+    LineParser parser = LineParser("test.dms");
+    dms_state* state = parser.Parse();
+    state->invoker.registerFunction("invokeTest", invokeTest);
+    state->dump();
+    state->run();
+    utils::print("Exitcode: ",state->exitcode);
+
+
     /*HINSTANCE hInst = LoadLibrary(L"C:\\Users\\rayam\\Desktop\\test.dll");
     if (!hInst) {
         std::cout << "\nCould not load the library!";
@@ -19,11 +31,4 @@ int main()
     }
 
     fn();*/
-
-    LineParser parser = LineParser("test.dms");
-    dms_state* state = parser.Parse();
-    state->dump();
-    state->run();
-    utils::print("Exitcode: ",state->exitcode);
-
 }

DMS/DMS.vcxproj

@@ -156,6 +156,7 @@
     <ClCompile Include="DMS.cpp" />
     <ClCompile Include="dms_state.cpp" />
     <ClCompile Include="dms_state_interpret.cpp" />
+    <ClCompile Include="Invoker.cpp" />
     <ClCompile Include="LineParserBuilds.cpp" />
     <ClCompile Include="LineParserMatchProcess.cpp" />
     <ClCompile Include="LineParserParse.cpp" />
@@ -174,6 +175,7 @@
     <ClInclude Include="cmd.h" />
     <ClInclude Include="codes.h" />
     <ClInclude Include="dms_state.h" />
+    <ClInclude Include="Invoker.h" />
     <ClInclude Include="string_utils.h" />
     <ClInclude Include="dms_exceptions.h" />
     <ClInclude Include="errors.h" />

DMS/DMS.vcxproj.filters

@@ -84,6 +84,9 @@
     <ClCompile Include="dms_custom.cpp">
       <Filter>Source Files\DMS</Filter>
     </ClCompile>
+    <ClCompile Include="Invoker.cpp">
+      <Filter>Source Files\DMS</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="value.h">
@@ -134,5 +137,8 @@
     <ClInclude Include="enviroment.h">
       <Filter>Header Files\DMS\blocks</Filter>
     </ClInclude>
+    <ClInclude Include="Invoker.h">
+      <Filter>Header Files\DMS</Filter>
+    </ClInclude>
   </ItemGroup>
 </Project>

DMS/Invoker.cpp

@@ -0,0 +1,28 @@
+#include "Invoker.h"
+#include "dms_state.h"
+namespace dms {
+    bool Invoker::registerFunction(std::string str, value* (*f)(dms_state*, dms_args*)) {
+        if (preventOverwriting && funcs.count(str)) {
+            return false;
+        }
+        funcs.insert_or_assign(str, f);
+        return true;
+    }
+    bool Invoker::registerFunction(std::string str, value* (*f)(dms_state*, dms_args*), bool preventoverride) {
+        if (preventoverride && funcs.count(str)) {
+            return false;
+        }
+        funcs.insert_or_assign(str, f);
+        return true;
+    }
+    value* Invoker:: Invoke(std::string str, dms_state* state, dms_args* args) {
+        if (funcs.count(str)) {
+            for (int i = 0; i < args->args.size() - 1; i++) {
+                args->args[i] = args->args[i]->resolve(state->memory);
+            }
+            return funcs[str](state, args);
+        }
+        state->push_error(errors::error{ errors::non_existing_function, "Attempt to call a nil value!" });
+        return buildNil();
+    }
+}

DMS/Invoker.h

@@ -0,0 +1,14 @@
+#pragma once
+#include "errors.h"
+#include <unordered_map>
+namespace dms {
+    struct dms_state;
+    class Invoker {
+        std::unordered_map<std::string, value* (*)(dms_state*, dms_args*)>funcs;
+    public:
+        bool preventOverwriting = true;
+        bool registerFunction(std::string str, value* (*f)(dms_state*, dms_args*));
+        bool registerFunction(std::string str, value* (*f)(dms_state*, dms_args*), bool preventoverride);
+        value* Invoke(std::string str, dms_state* state, dms_args* args);
+    };
+}

DMS/LineParser.h

@@ -74,7 +74,7 @@ namespace dms {
 		bool match_process_list(tokenstream* stream, value* v = nullptr);
 		bool match_process_wait(tokenstream* stream);
 		bool match_process_standard(tokenstream* stream, value* v = nullptr); // All types that are matchable are handled here!
-		bool match_process_index(tokenstream* stream,value* v = nullptr);
+		bool match_process_index(tokenstream* stream,value* v = nullptr, bool leftside = false);
 
 
 		// Build

DMS/LineParserMatchProcess.cpp

@@ -134,6 +134,15 @@ namespace dms {
 				}
 			}
 			length->set(buildNumber(count)); // the second argument is the length of the list! This should be modified if lists are changed at runtime!
+			c = new cmd;
+			c->opcode = codes::INST;
+			c->args.push(v);
+			c->args.push(buildNil());
+			if (dict != nullptr) {
+				c->args.push(dict);
+				dict = nullptr;
+			}
+			current_chunk->addCmd(c);
 			return true;
 		}
 		return false;
@@ -265,7 +274,27 @@ namespace dms {
 		return false;
 	}
 	bool LineParser::match_process_assignment(tokenstream* stream) {
-		if (stream->match(tokens::name,tokens::equal)) {
+		value* v = buildVariable();
+		v->set();
+		if (match_process_index(stream, v, true)) {
+			cmd* c = current_chunk->cmds.back();
+			value* ref = buildVariable();
+			if (stream->peek().type == tokens::equal) {
+				stream->next();
+			}
+			else {
+				badSymbol(stream);
+				return false;
+			}
+			if (match_process_standard(stream, ref)) {
+				c->args.push(ref);
+				return true;
+			}
+			else if (stream->match(tokens::newline)) {
+				stream->next();
+			}
+		}
+		else if (stream->match(tokens::name,tokens::equal)) {
 			value* var = buildVariable(stream->next().name); // The variable that we will be setting stuff to
 			stream->next(); // Consume the equal
 			cmd* c = new cmd;
@@ -275,12 +304,17 @@ namespace dms {
 			if (match_process_standard(stream,ref)) {
 				c->args.push(ref);
 				current_chunk->addCmd(c);
+				delete[] v;
 				return true;
 			}
 			else if (stream->match(tokens::newline)) {
 				stream->next();
 			}
 		}
+		else {
+			// We should clean up this
+			delete[] v;
+		}
 		return false;
 	}
 	bool LineParser::match_process_debug(tokenstream* stream) {
@@ -507,7 +541,7 @@ namespace dms {
 		}
 		return false;
 	}
-	bool LineParser::match_process_index(tokenstream* stream, value* v) {
+	bool LineParser::match_process_index(tokenstream* stream, value* v, bool leftside) {
 		if (stream->match(tokens::name,tokens::bracketo)) {
 			std::string name = stream->next().name;
 			std::vector<token> tok = stream->next(tokens::bracketo, tokens::bracketc);
@@ -517,14 +551,25 @@ namespace dms {
 			tempstream.init(&tok);
 			value* tempval = buildVariable();
 			cmd* c = new cmd;
-			c->opcode = codes::INDX;
+			if (leftside) {
+				c->opcode = codes::ASID;
+			}
+			else {
+				c->opcode = codes::INDX;
+			}
+			int nlcount = 0;
 			while (tempstream.peek().type != tokens::none) { // Keep going until we hit the end
 				if (match_process_standard(&tempstream, tempval)) {
 					c->args.push(v);
 					c->args.push(buildBlock(name));
 					c->args.push(tempval);
 				}
+				else if (nlcount) {
+					state->push_error(errors::error{ errors::badtoken,concat("Unexpected symbol '",tempstream.last().toString(),"' Expected ']' to close list (line: ",tempstream.last().line_num,") Indexing must be done on one line?"),true,tempstream.last().line_num,current_chunk });
+					return false;
+				}
 				else if (tempstream.match(tokens::newline)) {
+					nlcount++;
 					tempstream.next();
 				}
 				else {

DMS/codes.cpp

@@ -47,5 +47,6 @@ const std::string dms::codes::list[] = {
 	"LINE",
 	"HALT",
 	"FILE",
-	"GC"
+	"GC",
+	"ASID"
 };

DMS/codes.h

@@ -49,7 +49,8 @@ namespace dms::codes {
 		LINE,
 		HALT,
 		FILE,
-		GC
+		GC,
+		ASID
 	};
 	extern const std::string list[];
 	static bool isControl(const op code) {

DMS/dms.h

@@ -13,4 +13,5 @@
 #include "token.h"
 #include "utils.h"
 #include "value.h"
+#include "Invoker.h"
 

DMS/dms_state.h

@@ -4,6 +4,7 @@
 #include <iostream>
 #include <unordered_map>
 
+#include "Invoker.h"
 #include "errors.h"
 #include "chunk.h"
 #include "dms_exceptions.h"
@@ -15,6 +16,7 @@ namespace dms {
 	{
 		Handler* handler = nullptr;
 		bool hasFirst = false;
+		Invoker invoker;
 		std::unordered_map<std::string, value*> memory;
 		std::vector<value*> garbage;
 		std::unordered_map<std::string, chunk*> chunks;

DMS/dms_state_interpret.cpp

@@ -133,7 +133,7 @@ namespace dms {
 		while (!stop || !halt) {
 			c = cmds[pos++];
 			code = c->opcode;
-			//print("\n(",pos,")> ",*c);
+			//print("(",pos,")> ",*c);
 			//wait();
 			switch (code)
 			{
@@ -174,6 +174,51 @@ namespace dms {
 					}
 					return true;
 					break;
+				case FUNC:
+					{
+						std::string funcname = c->args.args[0]->getPrintable();
+						value* assn = c->args.args[1];
+						dms_args args;
+						for (int i = 2; i < c->args.args.size(); i++) {
+							args.push(c->args.args[i]);
+						}
+						value* ret = invoker.Invoke(funcname, this, &args);
+						if (assn->type != datatypes::nil) {
+							assign(mem, assn, ret);
+						}
+					}
+					break;
+				case ASID:
+				{
+					value* env = c->args.args[1];
+					value* indx = c->args.args[2]->resolve(*mem);
+					value* assn = c->args.args[3]->resolve(*mem);
+					if (env->type == datatypes::block && blockExists(env->getPrintable())) { // If this is a block let's handle this 
+						enviroment* e = nullptr;
+						if (enviroments.count(env->getPrintable())) {
+							e = enviroments[env->getPrintable()];
+						}
+						else if (characters.count(env->getPrintable())) {
+							e = characters[env->getPrintable()];
+						}
+						e->values[indx->getPrintable()] = assn;
+					}
+					else if (env->type == datatypes::env) {
+						if (indx->type == datatypes::number) {
+							env->e->pushValue(assn);
+						}
+						else {
+							push_error(errors::error{ errors::invalid_type ,concat("Expected a number value got ",datatype[indx->type]) });
+							return false;
+						}
+					}
+					else if (env->type == datatypes::custom) {
+						env->c->NewIndex(indx, assn);
+						//assign(mem, assn, env->c->Index(indx));
+						// Call the method within the custom data
+					}
+					break;
+				}
 				case INDX:
 					{
 						value* assn = c->args.args[0];

DMS/dump.txt

@@ -42,247 +42,97 @@ Line <13> name 		 main
 Line <13> bracketc 		 ]
 Line <13> newline 		 
 Line <13> newline 		 
-Line <14> string 		 why
 Line <14> newline 		 
 Line <14> newline 		 
-Line <15> name 		 Bob
+Line <15> name 		 list
-Line <15> colon 		 :
+Line <15> equal 		 =
 Line <15> cbracketo 		 {
+Line <15> string 		 Hello
+Line <15> seperator 		 ,
+Line <15> number 		 2
+Line <15> seperator 		 ,
+Line <15> number 		 3
+Line <15> cbracketc 		 }
 Line <15> newline 		 
 Line <15> newline 		 
-Line <16> name 		 speed
-Line <16> number 		 50
 Line <16> newline 		 
 Line <16> newline 		 
-Line <17> name 		 excited
+Line <17> string 		 Contents of list {`list:1`, `list:2`, `list:3`}
-Line <17> colon 		 :
-Line <17> string 		 Hello Mr. `Ryan:lname`, 
 Line <17> newline 		 
 Line <17> newline 		 
-Line <18> string 		 how are `inv:slot2` you doing?
 Line <18> newline 		 
 Line <18> newline 		 
-Line <19> cbracketc 		 }
-Line <19> newline 		 
 Line <19> newline 		 
 Line <20> newline 		 
 Line <20> newline 		 
-Line <21> name 		 test
+Line <21> name 		 hmm
 Line <21> equal 		 =
-Line <21> name 		 Bob
+Line <21> name 		 invokeTest
-Line <21> bracketo 		 [
+Line <21> parao 		 (
-Line <21> string 		 fname
+Line <21> string 		 Do I work?
-Line <21> bracketc 		 ]
+Line <21> parac 		 )
 Line <21> newline 		 
 Line <21> newline 		 
-Line <22> string 		 `Bob`'s First Name is: `test`
 Line <22> newline 		 
 Line <22> newline 		 
+Line <23> string 		 The return of hmm is "`hmm`"
+Line <23> newline 		 
 Line <23> newline 		 
 Line <24> newline 		 
 Line <24> newline 		 
-Line <25> name 		 Ryan
-Line <25> colon 		 :
-Line <25> cbracketo 		 {
 Line <25> newline 		 
 Line <25> newline 		 
-Line <26> string 		 Hey `Bob`, I'm good how are you?
+Line <26> bracketo 		 [
+Line <26> name 		 Bob
+Line <26> colon 		 :
+Line <26> name 		 char
+Line <26> bracketc 		 ]
 Line <26> newline 		 
 Line <26> newline 		 
-Line <27> cbracketc 		 }
 Line <27> newline 		 
 Line <28> newline 		 
-Line <28> newline 		 
-Line <29> string 		 Waiting ...
-Line <29> newline 		 
 Line <29> newline 		 
+Line <30> name 		 unknown
+Line <30> equal 		 =
+Line <30> string 		 Ya boi
 Line <30> newline 		 
 Line <30> newline 		 
-Line <31> name 		 Bob
+Line <31> name 		 age
-Line <31> colon 		 :
+Line <31> equal 		 =
-Line <31> cbracketo 		 {
+Line <31> number 		 0.24
 Line <31> newline 		 
 Line <31> newline 		 
-Line <32> string 		 I am great thanks! I want to show you that I can count!
+Line <32> name 		 money
-
+Line <32> equal 		 =
+Line <32> number 		 100
 Line <32> newline 		 
 Line <32> newline 		 
-Line <33> name 		 wait
+Line <33> name 		 excited
-Line <33> number 		 0.1
+Line <33> colon 		 :
+Line <33> string 		 path/to/file
 Line <33> newline 		 
 Line <33> newline 		 
-Line <34> string 		 1
-
 Line <34> newline 		 
 Line <34> newline 		 
-Line <35> name 		 wait
+Line <35> bracketo 		 [
-Line <35> number 		 0.1
+Line <35> name 		 newblock
+Line <35> colon 		 :
+Line <35> name 		 function
+Line <35> parao 		 (
+Line <35> parac 		 )
+Line <35> bracketc 		 ]
 Line <35> newline 		 
 Line <35> newline 		 
-Line <36> string 		 2
+Line <36> string 		 Test #2
-
 Line <36> newline 		 
 Line <36> newline 		 
-Line <37> name 		 wait
+Line <37> string 		 Does it parse this part properly?
-Line <37> number 		 0.1
 Line <37> newline 		 
 Line <37> newline 		 
-Line <38> string 		 3
+Line <38> string 		 huh
-
 Line <38> newline 		 
 Line <38> newline 		 
-Line <39> name 		 wait
+Line <38> eof 		 
-Line <39> number 		 0.1
-Line <39> newline 		 
-Line <39> newline 		 
-Line <40> string 		 4
-
-Line <40> newline 		 
-Line <40> newline 		 
-Line <41> name 		 wait
-Line <41> number 		 0.1
-Line <41> newline 		 
-Line <41> newline 		 
-Line <42> string 		 5
-
-Line <42> newline 		 
-Line <42> newline 		 
-Line <43> cbracketc 		 }
-Line <43> newline 		 
-Line <43> newline 		 
-Line <44> newline 		 
-Line <44> newline 		 
-Line <45> control 		 
-Line <45> string 		 What do you want to do?
-Line <45> cbracketo 		 {
-Line <45> newline 		 
-Line <45> newline 		 
-Line <46> string 		 option 1
-Line <46> name 		 test2
-Line <46> parao 		 (
-Line <46> string 		 testing
-Line <46> seperator 		 ,
-Line <46> cbracketo 		 {
-Line <46> number 		 1
-Line <46> seperator 		 ,
-Line <46> number 		 2
-Line <46> seperator 		 ,
-Line <46> number 		 3
-Line <46> cbracketc 		 }
-Line <46> parac 		 )
-Line <46> newline 		 
-Line <46> newline 		 
-Line <47> string 		 option 2
-Line <47> jump 		 
-Line <47> string 		 test
-Line <47> newline 		 
-Line <47> newline 		 
-Line <48> string 		 option 3
-Line <48> jump 		 
-Line <48> name 		 there
-Line <48> newline 		 
-Line <48> newline 		 
-Line <49> string 		 option 4
-Line <49> gotoo 		 
-Line <49> string 		 o3
-Line <49> newline 		 
-Line <49> newline 		 
-Line <50> string 		 option 5
-Line <50> gotoo 		 
-Line <50> name 		 here
-Line <50> newline 		 
-Line <50> newline 		 
-Line <51> string 		 option 6
-Line <51> name 		 test
-Line <51> parao 		 (
-Line <51> string 		 here
-Line <51> parac 		 )
-Line <51> newline 		 
-Line <51> newline 		 
-Line <52> cbracketc 		 }
-Line <52> newline 		 
-Line <52> newline 		 
-Line <53> newline 		 
-Line <53> newline 		 
-Line <54> bracketo 		 [
-Line <54> name 		 test
-Line <54> bracketc 		 ]
-Line <54> newline 		 
-Line <54> newline 		 
-Line <55> name 		 Ryan
-Line <55> colon 		 :
-Line <55> string 		 We are here now!
-Line <55> newline 		 
-Line <55> newline 		 
-Line <56> pipe 		 |
-Line <56> string 		 This continues from the last message!
-Line <56> newline 		 
-Line <56> newline 		 
-Line <57> pipe 		 |
-Line <57> string 		 Keeps code readable. This does not cause a new line!
-Line <57> newline 		 
-Line <57> newline 		 
-Line <58> name 		 Ryan
-Line <58> colon 		 :
-Line <58> string 		 This does trigger a new line tho!
-Line <58> newline 		 
-Line <58> newline 		 
-Line <59> string 		 This also will cause a new line!
-Line <59> newline 		 
-Line <59> newline 		 
-Line <60> newline 		 
-Line <60> newline 		 
-Line <61> bracketo 		 [
-Line <61> name 		 Bob
-Line <61> colon 		 :
-Line <61> name 		 char
-Line <61> bracketc 		 ]
-Line <61> newline 		 
-Line <61> newline 		 
-Line <62> newline 		 
-Line <63> newline 		 
-Line <64> newline 		 
-Line <65> name 		 unknown
-Line <65> equal 		 =
-Line <65> string 		 Some Rando
-Line <65> newline 		 
-Line <65> newline 		 
-Line <66> name 		 age
-Line <66> equal 		 =
-Line <66> number 		 0.24
-Line <66> newline 		 
-Line <66> newline 		 
-Line <67> name 		 money
-Line <67> equal 		 =
-Line <67> number 		 100
-Line <67> newline 		 
-Line <67> newline 		 
-Line <68> name 		 excited
-Line <68> colon 		 :
-Line <68> string 		 path/to/file
-Line <68> newline 		 
-Line <68> newline 		 
-Line <69> newline 		 
-Line <69> newline 		 
-Line <70> bracketo 		 [
-Line <70> name 		 newblock
-Line <70> colon 		 :
-Line <70> name 		 function
-Line <70> parao 		 (
-Line <70> parac 		 )
-Line <70> bracketc 		 ]
-Line <70> newline 		 
-Line <70> newline 		 
-Line <71> string 		 Test #2
-Line <71> newline 		 
-Line <71> newline 		 
-Line <72> string 		 Does it parse this part properly?
-Line <72> newline 		 
-Line <72> newline 		 
-Line <73> string 		 huh
-Line <73> newline 		 
-Line <73> newline 		 
-Line <73> eof 		 
 Line <1> newline 		 
 Line <1> newline 		 
 Line <1> flag 		 

DMS/errors.h

@@ -14,7 +14,8 @@ namespace dms::errors {
 		nested_function,
 		disp_unknown,
 		non_existing_block,
-		incompatible_version
+		incompatible_version,
+		non_existing_function
 	};
 	struct error {
 		errortype code=unknown;

DMS/test.dms

@@ -11,58 +11,23 @@ version 0.2
 using extendedDefine
 
 [main]
-	"why"
-	Bob: {
-		speed 50
-		excited: "Hello Mr. `Ryan:lname`, "
-		"how are `inv:slot2` you doing?"
-	}
 	
-	test = Bob["fname"]
+	list = {"Hello",2,3}
-	"`Bob`'s First Name is: `test`"
+	
+	"Contents of list {`list:1`, `list:2`, `list:3`}"
+	
 	//Ryan:setNickname(Bob,"Bobby") // Not yet implemeted!
 	
-	Ryan: {
+	hmm = invokeTest("Do I work?")
-		"Hey `Bob`, I'm good how are you?"
-	} // Should display Hey Bobby, I'm good how are you?
 	
-	"Waiting ..."
+	"The return of hmm is \"`hmm`\""
 
-	Bob: {
-		"I am great thanks! I want to show you that I can count!\n"
-		wait .1
-		"1\n"
-		wait .1
-		"2\n"
-		wait .1
-		"3\n"
-		wait .1
-		"4\n"
-		wait .1
-		"5\n"
-	}
-
-	choice "What do you want to do?" {
-		"option 1" test2("testing",{1,2,3})
-		"option 2" jump "test"
-		"option 3" jump there
-		"option 4" goto "o3"
-		"option 5" goto here
-		"option 6" test("here")
-	}
-
-[test]
-	Ryan: "We are here now!"
-		   |"This continues from the last message!"
-		   |"Keeps code readable. This does not cause a new line!"
-	Ryan: "This does trigger a new line tho!"
-		   "This also will cause a new line!"
 
 [Bob:char]
 	//fname = "Bob"
 	//known = true // defaults to false
 	//lname = "Johnson" // defaults to ""
-	unknown = "Some Rando"
+	unknown = "Ya boi"
 	age = .24
 	money = 100
 	excited: "path/to/file"

DMS/value.cpp

@@ -1,5 +1,6 @@
 #include "value.h"
 #include "dms_state.h"
+#include "utils.h"
 namespace dms {
 	const std::string datatype[] = { "escape","nil", "number", "boolean", "env", "string", "custom", "variable", "block" };
 	std::vector<value*> _VALUES;
@@ -19,6 +20,9 @@ namespace dms {
 	void dms_args::push(value* val) {
 		args.push_back(val);
 	}
+	size_t dms_args::size() {
+		return args.size();
+	}
 	std::string dms_string::getValue(dms_state* state) {
 		std::stringstream temp;
 		std::stringstream var;
@@ -60,8 +64,14 @@ namespace dms {
 							temp << "nil";
 						}
 					}
+					else if (v->resolve(state->memory)->type == datatypes::env) {
+						if(v->resolve(state->memory)->e->ipart.size()> std::stoi(index))
+							temp << v->resolve(state->memory)->e->ipart[std::stoi(index)-1]->getPrintable();
+						else
+							temp << "nil";
+					}
 					else {
-						temp << v->getPrintable();
+						temp << v->resolve(state->memory)->getPrintable();
 					}
 				}
 				else {
@@ -206,6 +216,11 @@ namespace dms {
 		val->type = variable;
 		return val;
 	}
+	value* buildValue(char const* s) {
+		value* val = new value{};
+		val->set(buildString(s));
+		return val;
+	}
 	value* buildValue(std::string str) {
 		value* val = new value{};
 		val->set(buildString(str));

DMS/value.h

@@ -117,6 +117,7 @@ namespace dms {
 		};
 	};
 	value* buildValue();
+	value* buildValue(char const* s);
 	value* buildNil();
 	value* buildVariable(std::string str);
 	value* buildVariable();
@@ -129,6 +130,7 @@ namespace dms {
 	struct dms_args {
 		std::vector<value*> args;
 		void push(value* val);
+		size_t size();
 		friend std::ostream& operator << (std::ostream& out, const dms_args& c) {
 			for (size_t i=0; i < c.args.size(); i++) {
 				if(i==c.args.size()-1)