Improve compilation times

Compilation with make went from 13 -> 10 seconds.
CMAKE_UNITY_BUILD went even lower to 6 seconds.

Closes #11

include/project_parser.hpp

@@ -1,8 +1,6 @@
 #pragma once
 
-#include <map>
 #include <mpark/variant.hpp>
-#include <stdexcept>
 #include <string>
 #include <tsl/ordered_map.h>
 #include <vector>

src/cmake_generator.cpp

@@ -4,16 +4,10 @@
 #include <resources/cmkr.hpp>
 
 #include "fs.hpp"
-#include <cassert>
 #include <cstdio>
-#include <cstring>
 #include <fstream>
-#include <iomanip>
-#include <new>
-#include <regex>
 #include <sstream>
 #include <stdexcept>
-#include <string>
 
 namespace cmkr {
 namespace gen {
@@ -157,9 +151,9 @@ struct Command {
     Command(std::stringstream &ss, int depth, std::string command, std::string post_comment)
         : ss(ss), depth(depth), command(std::move(command)), post_comment(std::move(post_comment)) {}
 
-    ~Command() {
+    ~Command() noexcept(false) {
         if (!generated) {
-            assert(false && "Incorrect usage of cmd(), you probably forgot ()");
+            throw std::runtime_error("Incorrect usage of cmd(), you probably forgot ()");
         }
     }
 
@@ -407,10 +401,28 @@ struct Generator {
 };
 
 static bool vcpkg_valid_identifier(const std::string &name) {
-    const std::regex reserved("prn|aux|nul|con|lpt[1-9]|com[1-9]|core|default");
-    const std::regex ok("[a-z0-9]+(-[a-z0-9]+)*");
-    std::cmatch m;
-    return !std::regex_match(name.c_str(), m, reserved) && std::regex_match(name.c_str(), m, ok);
+    // prn|aux|nul|con|lpt[1-9]|com[1-9]|core|default
+    auto is_reserved = [](const std::string &s) {
+        if (s == "prn" || s == "aux" || s == "nul" || s == "con" || s == "core" || s == "default") {
+            return true;
+        }
+        if (s.length() == 4 && (s.compare(0, 3, "lpt") == 0 || s.compare(0, 3, "com") == 0) && (s[3] >= '1' && s[3] <= '9')) {
+            return true;
+        }
+        return false;
+    };
+    // [a-z0-9]+(-[a-z0-9]+)*
+    auto is_identifier = [](const std::string &s) {
+        for (size_t i = 0; i < s.length(); i++) {
+            auto c = s[i];
+            if ((c >= 'a' && c <= 'z') || (c >= '0' && c <= '9') || (i > 0 && c == '-')) {
+                continue;
+            }
+            return false;
+        }
+        return true;
+    };
+    return is_identifier(name) && !is_reserved(name);
 }
 
 static std::string vcpkg_escape_identifier(const std::string &name) {
@@ -795,7 +807,7 @@ void generate_cmake(const char *path, const parser::Project *parent_project) {
                 target_scope = "PUBLIC";
                 break;
             default:
-                assert("Unimplemented enum value" && false);
+                throw std::runtime_error("Unimplemented enum value");
             }
 
             cmd(add_command)(target.name, target_type).endl();

src/project_parser.cpp

@@ -6,7 +6,6 @@
 #include <stdexcept>
 #include <toml.hpp>
 #include <tsl/ordered_map.h>
-#include <tsl/ordered_set.h>
 
 template <>
 const char *enumStrings<cmkr::parser::TargetType>::data[] = {"executable", "library", "shared", "static", "interface", "custom", "object"};
@@ -14,7 +13,7 @@ const char *enumStrings<cmkr::parser::TargetType>::data[] = {"executable", "libr
 namespace cmkr {
 namespace parser {
 
-using TomlBasicValue = toml::basic_value<toml::preserve_comments, tsl::ordered_map, std::vector>;
+using TomlBasicValue = toml::basic_value<toml::discard_comments, tsl::ordered_map, std::vector>;
 
 template <typename EnumType>
 static EnumType to_enum(const std::string &str, const std::string &help_name) {
@@ -63,8 +62,8 @@ static std::string format_key_error(const std::string &error, const toml::key &k
 
 class TomlChecker {
     const TomlBasicValue &m_v;
-    tsl::ordered_set<toml::key> m_visited;
-    tsl::ordered_set<toml::key> m_conditionVisited;
+    tsl::ordered_map<toml::key, bool> m_visited;
+    tsl::ordered_map<toml::key, bool> m_conditionVisited;
 
   public:
     TomlChecker(const TomlBasicValue &v, const toml::key &ky) : m_v(toml::find(v, ky)) {}
@@ -91,7 +90,7 @@ class TomlChecker {
         // Handle visiting logic
         for (const auto &itr : destination) {
             if (!itr.first.empty()) {
-                m_conditionVisited.emplace(itr.first);
+                m_conditionVisited.emplace(itr.first, true);
             }
         }
         visit(ky);
@@ -122,7 +121,7 @@ class TomlChecker {
         return toml::find(m_v, ky);
     }
 
-    void visit(const toml::key &ky) { m_visited.insert(ky); }
+    void visit(const toml::key &ky) { m_visited.emplace(ky, true); }
 
     void check(const tsl::ordered_map<std::string, std::string> &conditions) const {
         for (const auto &itr : m_v.as_table()) {
@@ -182,7 +181,7 @@ Project::Project(const Project *parent, const std::string &path, bool build) {
     if (!fs::exists(toml_path)) {
         throw std::runtime_error("No cmake.toml was found!");
     }
-    const auto toml = toml::parse<toml::preserve_comments, tsl::ordered_map, std::vector>(toml_path.string());
+    const auto toml = toml::parse<toml::discard_comments, tsl::ordered_map, std::vector>(toml_path.string());
 
     TomlCheckerRoot checker;
 
@@ -274,7 +273,7 @@ Project::Project(const Project *parent, const std::string &path, bool build) {
     }
 
     if (toml.contains("settings")) {
-        using set_map = std::map<std::string, TomlBasicValue>;
+        using set_map = tsl::ordered_map<std::string, TomlBasicValue>;
         const auto &sets = toml::find<set_map>(toml, "settings");
         for (const auto &itr : sets) {
             Setting s;
@@ -507,7 +506,7 @@ bool is_root_path(const std::string &path) {
     if (!fs::exists(toml_path)) {
         return false;
     }
-    const auto toml = toml::parse<toml::preserve_comments, tsl::ordered_map, std::vector>(toml_path.string());
+    const auto toml = toml::parse<toml::discard_comments, tsl::ordered_map, std::vector>(toml_path.string());
     return toml.contains("project");
 }