🎉 cst command

src/command/cst.js

@@ -0,0 +1,87 @@
+Juicescript.command_define({
+	name: "cst",
+	alias: ["cast"],
+	
+	validate: function(runner){
+		// count
+		runner.argument_validate_count(2);
+		if(runner.has_error) return;
+		
+		// types
+		runner.argument_validate_type(1, Juicescript.argument_type.VARIABLE);
+		runner.argument_validate_type(2, Juicescript.argument_type.VALUE);
+	},
+	
+	execute: function(runner){
+		// GET VARIABLE //
+		// resolve first argument to absolute variable object
+		let variable = runner.argument_variable(1);
+		
+		// get its value
+		let value = runner.variable_get(variable);
+		
+		
+		// GET WANTED NEW DATA TYPE //
+		// read argument value
+		let data_type_input = runner.argument_value(2);
+		
+		// validate data type
+		let data_type_of_data_type_input = runner.data_type(data_type_input);
+		if(data_type_of_data_type_input !== Juicescript.data_type.STR){
+			// ignore with warning
+			runner.warning_argument(2, "expected data type STR, but got " + Juicescript.data_type.name(data_type_of_data_type_input));
+			return;
+		}
+		
+		// try to find enum by name
+		let data_type = Juicescript.data_type.find(data_type_input);
+		if(data_type === null){
+			// ignore with warning
+			runner.warning_argument(2, "invalid data type '" + data_type_input + "'");
+			return;
+		}
+		
+		
+		// CAST TO NULL //
+		if(data_type === Juicescript.data_type.NULL){
+			// change value to 'null'
+			runner.variable_set(variable, null);
+			return;
+		}
+		
+		
+		// CAST TO BOOLEAN //
+		if(data_type === Juicescript.data_type.BOOL){
+			// will always be false
+			runner.variable_set(variable, false);
+			return;
+		}
+		
+		
+		// CAST TO NUMBER //
+		if(data_type === Juicescript.data_type.NUM){
+			// hardcoded cases
+			if(value === null){ runner.variable_set(variable, 0); return; }
+			if(value === true){ runner.variable_set(variable, 1); return; }
+			if(value === false){ runner.variable_set(variable, 0); return; }
+			
+			// try to convert using javascript's Number method
+			let number = Number(value);
+			
+			// fallback if it didn't work
+			if(typeof number !== "number" || Number.isNaN(number)) number = 0;
+			
+			// store to variable
+			runner.variable_set(variable, number);
+			return;
+		}
+		
+		
+		// CAST TO STRING //
+		if(data_type === Juicescript.data_type.STR){
+			// use own stringify method
+			runner.variable_set(variable, runner.stringify(value));
+			return;
+		}
+	}
+});