first commit

objects/vp_meta.cpp

@@ -0,0 +1,70 @@
+
+#include "vp_meta.h"
+#include "../excepts/vp_invalid_argument_error.h"
+
+namespace vp_objects {
+    
+    vp_meta::vp_meta(vp_meta_type meta_type, int channel_index): 
+        meta_type(meta_type), 
+        channel_index(channel_index) {
+            create_time = std::chrono::system_clock::now();
+    }
+
+    vp_meta::~vp_meta() {
+
+    }
+
+    std::string vp_meta::get_traces_str() {
+        return "";
+    }
+
+    std::string vp_meta::get_meta_str() {
+        return "";
+    }
+
+/*
+    void vp_meta::attach_trace(std::string node_name) {
+        if (trace_table.count(node_name)) {
+            return;
+        }
+        
+        std::map<vp_meta_trace_field, std::any> new_trace_record {
+            {vp_meta_trace_field::SEQUENCE, trace_table.size()},
+            {vp_meta_trace_field::NODE_NAME, node_name},
+            {vp_meta_trace_field::IN_TIME, -1},
+            {vp_meta_trace_field::OUT_TIME, -1},
+            {vp_meta_trace_field::TEXT_INFO, std::vector<std::string>{}}
+        };
+
+        // append to the end of table
+        trace_table[node_name] = new_trace_record;
+    }
+
+    void vp_meta::update_trace(std::string node_name, vp_meta_trace_field trace_key, std::any trace_value) {
+        if (trace_table.count(node_name)) {
+            auto & trace_record = trace_table[node_name];
+            assert(trace_record.count(trace_key));
+
+            switch (trace_key) {
+                case vp_meta_trace_field::SEQUENCE:
+                case vp_meta_trace_field::NODE_NAME:
+                case vp_meta_trace_field::IN_TIME:
+                case vp_meta_trace_field::OUT_TIME: {
+                    // replace directly
+                    trace_record[trace_key] = trace_value;
+                    break;
+                }
+                case vp_meta_trace_field::TEXT_INFO: {
+                    // append to the end of vector
+                    auto & trace_desc = std::any_cast<std::vector<std::string>&>(trace_record[trace_key]);
+                    trace_desc.push_back(std::any_cast<std::string>(trace_value));
+                    break;
+                }
+                default: {
+                    throw vp_excepts::vp_invalid_argument_error("invalid trace_key for meta!");
+                    break;
+                }
+            }
+        }
+    }*/
+}