Simplified file structure

src/errors/Base.go

@@ -0,0 +1,33 @@
+package errors
+
+var (
+	EmptySwitch                = &Base{"Empty switch"}
+	ExpectedFunctionName       = &Base{"Expected function name"}
+	ExpectedFunctionParameters = &Base{"Expected function parameters"}
+	ExpectedFunctionDefinition = &Base{"Expected function definition"}
+	ExpectedIfBeforeElse       = &Base{"Expected an 'if' block before 'else'"}
+	InvalidNumber              = &Base{"Invalid number"}
+	InvalidExpression          = &Base{"Invalid expression"}
+	InvalidRune                = &Base{"Invalid rune"}
+	InvalidStatement           = &Base{"Invalid statement"}
+	MissingBlockStart          = &Base{"Missing '{'"}
+	MissingBlockEnd            = &Base{"Missing '}'"}
+	MissingExpression          = &Base{"Missing expression"}
+	MissingGroupStart          = &Base{"Missing '('"}
+	MissingGroupEnd            = &Base{"Missing ')'"}
+	MissingMainFunction        = &Base{"Missing main function"}
+	MissingOperand             = &Base{"Missing operand"}
+	MissingType                = &Base{"Missing type"}
+	NotImplemented             = &Base{"Not implemented"}
+	UnknownType                = &Base{"Unknown type"}
+)
+
+// Base is the base class for errors that have no parameters.
+type Base struct {
+	Message string
+}
+
+// Error generates the string representation.
+func (err *Base) Error() string {
+	return err.Message
+}