.clang-format

@@ -63,7 +63,7 @@ BreakBeforeTernaryOperators: true
 BreakConstructorInitializers: AfterColon
 BreakInheritanceList: AfterColon
 BreakStringLiterals: false
-ColumnLimit: 80
+ColumnLimit: 120
 CommentPragmas: "^ IWYU pragma:"
 CompactNamespaces: false
 ConstructorInitializerAllOnOneLineOrOnePerLine: true

compile_commands.json

@@ -1,98 +0,0 @@
-[
-  {
-    "directory": "/mnt/data/ubb/courses/proyecto-titulo/obelisk/builddir",
-    "command": "c++ -Isrc/obelisk.p -Isrc -I../src -fdiagnostics-color=always -D_FILE_OFFSET_BITS=64 -Wall -Winvalid-pch -Wnon-virtual-dtor -Wextra -Wpedantic -std=c++17 -g -isystem/usr/lib/llvm-14/include -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -MD -MQ src/obelisk.p/obelisk.cpp.o -MF src/obelisk.p/obelisk.cpp.o.d -o src/obelisk.p/obelisk.cpp.o -c ../src/obelisk.cpp",
-    "file": "../src/obelisk.cpp",
-    "output": "src/obelisk.p/obelisk.cpp.o"
-  },
-  {
-    "directory": "/mnt/data/ubb/courses/proyecto-titulo/obelisk/builddir",
-    "command": "c++ -Isrc/obelisk.p -Isrc -I../src -fdiagnostics-color=always -D_FILE_OFFSET_BITS=64 -Wall -Winvalid-pch -Wnon-virtual-dtor -Wextra -Wpedantic -std=c++17 -g -isystem/usr/lib/llvm-14/include -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -MD -MQ src/obelisk.p/lexer.cpp.o -MF src/obelisk.p/lexer.cpp.o.d -o src/obelisk.p/lexer.cpp.o -c ../src/lexer.cpp",
-    "file": "../src/lexer.cpp",
-    "output": "src/obelisk.p/lexer.cpp.o"
-  },
-  {
-    "directory": "/mnt/data/ubb/courses/proyecto-titulo/obelisk/builddir",
-    "command": "c++ -Isrc/obelisk.p -Isrc -I../src -fdiagnostics-color=always -D_FILE_OFFSET_BITS=64 -Wall -Winvalid-pch -Wnon-virtual-dtor -Wextra -Wpedantic -std=c++17 -g -isystem/usr/lib/llvm-14/include -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -MD -MQ src/obelisk.p/parser.cpp.o -MF src/obelisk.p/parser.cpp.o.d -o src/obelisk.p/parser.cpp.o -c ../src/parser.cpp",
-    "file": "../src/parser.cpp",
-    "output": "src/obelisk.p/parser.cpp.o"
-  },
-  {
-    "directory": "/mnt/data/ubb/courses/proyecto-titulo/obelisk/builddir",
-    "command": "c++ -Isrc/obelisk.p -Isrc -I../src -fdiagnostics-color=always -D_FILE_OFFSET_BITS=64 -Wall -Winvalid-pch -Wnon-virtual-dtor -Wextra -Wpedantic -std=c++17 -g -isystem/usr/lib/llvm-14/include -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -MD -MQ src/obelisk.p/knowledge_base.cpp.o -MF src/obelisk.p/knowledge_base.cpp.o.d -o src/obelisk.p/knowledge_base.cpp.o -c ../src/knowledge_base.cpp",
-    "file": "../src/knowledge_base.cpp",
-    "output": "src/obelisk.p/knowledge_base.cpp.o"
-  },
-  {
-    "directory": "/mnt/data/ubb/courses/proyecto-titulo/obelisk/builddir",
-    "command": "c++ -Isrc/obelisk.p -Isrc -I../src -fdiagnostics-color=always -D_FILE_OFFSET_BITS=64 -Wall -Winvalid-pch -Wnon-virtual-dtor -Wextra -Wpedantic -std=c++17 -g -isystem/usr/lib/llvm-14/include -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -MD -MQ src/obelisk.p/ast_call_expression_ast.cpp.o -MF src/obelisk.p/ast_call_expression_ast.cpp.o.d -o src/obelisk.p/ast_call_expression_ast.cpp.o -c ../src/ast/call_expression_ast.cpp",
-    "file": "../src/ast/call_expression_ast.cpp",
-    "output": "src/obelisk.p/ast_call_expression_ast.cpp.o"
-  },
-  {
-    "directory": "/mnt/data/ubb/courses/proyecto-titulo/obelisk/builddir",
-    "command": "c++ -Isrc/obelisk.p -Isrc -I../src -fdiagnostics-color=always -D_FILE_OFFSET_BITS=64 -Wall -Winvalid-pch -Wnon-virtual-dtor -Wextra -Wpedantic -std=c++17 -g -isystem/usr/lib/llvm-14/include -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -MD -MQ src/obelisk.p/ast_error.cpp.o -MF src/obelisk.p/ast_error.cpp.o.d -o src/obelisk.p/ast_error.cpp.o -c ../src/ast/error.cpp",
-    "file": "../src/ast/error.cpp",
-    "output": "src/obelisk.p/ast_error.cpp.o"
-  },
-  {
-    "directory": "/mnt/data/ubb/courses/proyecto-titulo/obelisk/builddir",
-    "command": "c++ -Isrc/obelisk.p -Isrc -I../src -fdiagnostics-color=always -D_FILE_OFFSET_BITS=64 -Wall -Winvalid-pch -Wnon-virtual-dtor -Wextra -Wpedantic -std=c++17 -g -isystem/usr/lib/llvm-14/include -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -MD -MQ src/obelisk.p/ast_function_ast.cpp.o -MF src/obelisk.p/ast_function_ast.cpp.o.d -o src/obelisk.p/ast_function_ast.cpp.o -c ../src/ast/function_ast.cpp",
-    "file": "../src/ast/function_ast.cpp",
-    "output": "src/obelisk.p/ast_function_ast.cpp.o"
-  },
-  {
-    "directory": "/mnt/data/ubb/courses/proyecto-titulo/obelisk/builddir",
-    "command": "c++ -Isrc/obelisk.p -Isrc -I../src -fdiagnostics-color=always -D_FILE_OFFSET_BITS=64 -Wall -Winvalid-pch -Wnon-virtual-dtor -Wextra -Wpedantic -std=c++17 -g -isystem/usr/lib/llvm-14/include -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -MD -MQ src/obelisk.p/ast_number_expression_ast.cpp.o -MF src/obelisk.p/ast_number_expression_ast.cpp.o.d -o src/obelisk.p/ast_number_expression_ast.cpp.o -c ../src/ast/number_expression_ast.cpp",
-    "file": "../src/ast/number_expression_ast.cpp",
-    "output": "src/obelisk.p/ast_number_expression_ast.cpp.o"
-  },
-  {
-    "directory": "/mnt/data/ubb/courses/proyecto-titulo/obelisk/builddir",
-    "command": "c++ -Isrc/obelisk.p -Isrc -I../src -fdiagnostics-color=always -D_FILE_OFFSET_BITS=64 -Wall -Winvalid-pch -Wnon-virtual-dtor -Wextra -Wpedantic -std=c++17 -g -isystem/usr/lib/llvm-14/include -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -MD -MQ src/obelisk.p/ast_prototype_ast.cpp.o -MF src/obelisk.p/ast_prototype_ast.cpp.o.d -o src/obelisk.p/ast_prototype_ast.cpp.o -c ../src/ast/prototype_ast.cpp",
-    "file": "../src/ast/prototype_ast.cpp",
-    "output": "src/obelisk.p/ast_prototype_ast.cpp.o"
-  },
-  {
-    "directory": "/mnt/data/ubb/courses/proyecto-titulo/obelisk/builddir",
-    "command": "c++ -Isrc/obelisk.p -Isrc -I../src -fdiagnostics-color=always -D_FILE_OFFSET_BITS=64 -Wall -Winvalid-pch -Wnon-virtual-dtor -Wextra -Wpedantic -std=c++17 -g -isystem/usr/lib/llvm-14/include -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -MD -MQ src/obelisk.p/ast_variable_expression_ast.cpp.o -MF src/obelisk.p/ast_variable_expression_ast.cpp.o.d -o src/obelisk.p/ast_variable_expression_ast.cpp.o -c ../src/ast/variable_expression_ast.cpp",
-    "file": "../src/ast/variable_expression_ast.cpp",
-    "output": "src/obelisk.p/ast_variable_expression_ast.cpp.o"
-  },
-  {
-    "directory": "/mnt/data/ubb/courses/proyecto-titulo/obelisk/builddir",
-    "command": "c++ -Isrc/obelisk.p -Isrc -I../src -fdiagnostics-color=always -D_FILE_OFFSET_BITS=64 -Wall -Winvalid-pch -Wnon-virtual-dtor -Wextra -Wpedantic -std=c++17 -g -isystem/usr/lib/llvm-14/include -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -MD -MQ src/obelisk.p/models_action.cpp.o -MF src/obelisk.p/models_action.cpp.o.d -o src/obelisk.p/models_action.cpp.o -c ../src/models/action.cpp",
-    "file": "../src/models/action.cpp",
-    "output": "src/obelisk.p/models_action.cpp.o"
-  },
-  {
-    "directory": "/mnt/data/ubb/courses/proyecto-titulo/obelisk/builddir",
-    "command": "c++ -Isrc/obelisk.p -Isrc -I../src -fdiagnostics-color=always -D_FILE_OFFSET_BITS=64 -Wall -Winvalid-pch -Wnon-virtual-dtor -Wextra -Wpedantic -std=c++17 -g -isystem/usr/lib/llvm-14/include -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -MD -MQ src/obelisk.p/models_entity.cpp.o -MF src/obelisk.p/models_entity.cpp.o.d -o src/obelisk.p/models_entity.cpp.o -c ../src/models/entity.cpp",
-    "file": "../src/models/entity.cpp",
-    "output": "src/obelisk.p/models_entity.cpp.o"
-  },
-  {
-    "directory": "/mnt/data/ubb/courses/proyecto-titulo/obelisk/builddir",
-    "command": "c++ -Isrc/obelisk.p -Isrc -I../src -fdiagnostics-color=always -D_FILE_OFFSET_BITS=64 -Wall -Winvalid-pch -Wnon-virtual-dtor -Wextra -Wpedantic -std=c++17 -g -isystem/usr/lib/llvm-14/include -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -MD -MQ src/obelisk.p/models_fact.cpp.o -MF src/obelisk.p/models_fact.cpp.o.d -o src/obelisk.p/models_fact.cpp.o -c ../src/models/fact.cpp",
-    "file": "../src/models/fact.cpp",
-    "output": "src/obelisk.p/models_fact.cpp.o"
-  },
-  {
-    "directory": "/mnt/data/ubb/courses/proyecto-titulo/obelisk/builddir",
-    "command": "c++ -Isrc/obelisk.p -Isrc -I../src -fdiagnostics-color=always -D_FILE_OFFSET_BITS=64 -Wall -Winvalid-pch -Wnon-virtual-dtor -Wextra -Wpedantic -std=c++17 -g -isystem/usr/lib/llvm-14/include -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -MD -MQ src/obelisk.p/models_rule.cpp.o -MF src/obelisk.p/models_rule.cpp.o.d -o src/obelisk.p/models_rule.cpp.o -c ../src/models/rule.cpp",
-    "file": "../src/models/rule.cpp",
-    "output": "src/obelisk.p/models_rule.cpp.o"
-  },
-  {
-    "directory": "/mnt/data/ubb/courses/proyecto-titulo/obelisk/builddir",
-    "command": "c++ -Isrc/obelisk.p -Isrc -I../src -fdiagnostics-color=always -D_FILE_OFFSET_BITS=64 -Wall -Winvalid-pch -Wnon-virtual-dtor -Wextra -Wpedantic -std=c++17 -g -isystem/usr/lib/llvm-14/include -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -MD -MQ src/obelisk.p/models_suggest_action.cpp.o -MF src/obelisk.p/models_suggest_action.cpp.o.d -o src/obelisk.p/models_suggest_action.cpp.o -c ../src/models/suggest_action.cpp",
-    "file": "../src/models/suggest_action.cpp",
-    "output": "src/obelisk.p/models_suggest_action.cpp.o"
-  },
-  {
-    "directory": "/mnt/data/ubb/courses/proyecto-titulo/obelisk/builddir",
-    "command": "c++ -Isrc/obelisk.p -Isrc -I../src -fdiagnostics-color=always -D_FILE_OFFSET_BITS=64 -Wall -Winvalid-pch -Wnon-virtual-dtor -Wextra -Wpedantic -std=c++17 -g -isystem/usr/lib/llvm-14/include -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -MD -MQ src/obelisk.p/models_verb.cpp.o -MF src/obelisk.p/models_verb.cpp.o.d -o src/obelisk.p/models_verb.cpp.o -c ../src/models/verb.cpp",
-    "file": "../src/models/verb.cpp",
-    "output": "src/obelisk.p/models_verb.cpp.o"
-  }
-]

doc/meson.build

@@ -0,0 +1,18 @@
+cdata.set('TOP_SRCDIR', meson.project_source_root())
+cdata.set('TOP_BUILDDIR', meson.project_build_root())
+
+doxyfile = configure_file(input: 'doxygen.conf.in',
+    output: 'doxygen.conf',
+    configuration: cdata,
+    install: false
+)
+
+datadir = join_paths(get_option('datadir'), 'doc', 'obelisk')
+
+html_target = custom_target('obelisk-docs',
+    input: doxyfile,
+    output: 'html',
+    command: [doxygen, doxyfile],
+    install: true,
+    install_dir: datadir
+)

meson.build

@@ -1,6 +1,7 @@
 project('obelisk',
     'cpp',
     version : '1.0.0',
+    license : 'BSD-3-Clause',
     default_options : [
         'warning_level=3',
         'c_std=c17',
@@ -8,4 +9,21 @@ project('obelisk',
     ]
 )
 
+llvm = dependency('llvm', version: '>= 14.0.0', modules : ['core', 'target', 'mcjit', 'nativecodegen'], required : true, method: 'config-tool')
+
+doxygen = find_program('doxygen', required : false)
+
+cdata = configuration_data()
+cdata.set('VERSION', meson.project_version())
+
+if find_program('dot', required : false).found()
+    cdata.set('HAVE_DOT', 'YES')
+else
+    cdata.set('HAVE_DOT', 'NO')
+endif
+
+if doxygen.found()
+    subdir('doc')
+endif
+
 subdir('src')

src/ast/call_expression_ast.h

@@ -22,8 +22,7 @@ namespace obelisk
             void setArgs(std::vector<std::unique_ptr<ExpressionAST>> args);
 
         public:
-            CallExpressionAST(const std::string &callee,
+            CallExpressionAST(const std::string &callee, std::vector<std::unique_ptr<ExpressionAST>> args) :
-                std::vector<std::unique_ptr<ExpressionAST>> args) :
                 callee_(callee),
                 args_(std::move(args))
             {

src/ast/function_ast.cpp

@@ -17,8 +17,7 @@ llvm::Function *obelisk::FunctionAST::codegen()
         return nullptr;
     }
 
-    llvm::BasicBlock *bB
+    llvm::BasicBlock *bB = llvm::BasicBlock::Create(*TheContext, "entry", theFunction);
-        = llvm::BasicBlock::Create(*TheContext, "entry", theFunction);
     Builder->SetInsertPoint(bB);
 
     NamedValues.clear();

src/ast/function_ast.h

@@ -18,8 +18,7 @@ namespace obelisk
             void setPrototype(std::unique_ptr<PrototypeAST> prototype);
 
         public:
-            FunctionAST(std::unique_ptr<PrototypeAST> prototype,
+            FunctionAST(std::unique_ptr<PrototypeAST> prototype, std::unique_ptr<ExpressionAST> body) :
-                std::unique_ptr<ExpressionAST> body) :
                 prototype_(std::move(prototype)),
                 body_(std::move(body))
             {

src/ast/prototype_ast.cpp

@@ -3,17 +3,10 @@
 
 llvm::Function *obelisk::PrototypeAST::codegen()
 {
-    std::vector<llvm::Type *> doubles(args_.size(),
+    std::vector<llvm::Type *> doubles(args_.size(), llvm::Type::getDoubleTy(*TheContext));
-        llvm::Type::getDoubleTy(*TheContext));
+    llvm::FunctionType *FT = llvm::FunctionType::get(llvm::Type::getDoubleTy(*TheContext), doubles, false);
-    llvm::FunctionType *FT
-        = llvm::FunctionType::get(llvm::Type::getDoubleTy(*TheContext),
-            doubles,
-            false);
 
-    llvm::Function *F = llvm::Function::Create(FT,
+    llvm::Function *F = llvm::Function::Create(FT, llvm::Function::ExternalLinkage, name_, obelisk::TheModule.get());
-        llvm::Function::ExternalLinkage,
-        name_,
-        obelisk::TheModule.get());
 
     unsigned idx = 0;
     for (auto &arg : F->args())

src/ast/prototype_ast.h

@@ -19,8 +19,7 @@ namespace obelisk
             void setArgs(std::vector<std::string> args);
 
         public:
-            PrototypeAST(const std::string& name,
+            PrototypeAST(const std::string& name, std::vector<std::string> args) :
-                std::vector<std::string> args) :
                 name_(name),
                 args_(std::move(args))
             {

src/knowledge_base.cpp

@@ -47,20 +47,10 @@ obelisk::KnowledgeBase::~KnowledgeBase()
     }
 }
 
-/**
- * @brief Enable foreign key functionality in the open database.
- *
- * This must always be done when the connection is opened or it will not
- * enforce the foreign key constraints.
- */
 void obelisk::KnowledgeBase::enableForeignKeys()
 {
     char* errmsg;
-    int result = sqlite3_exec(dbConnection_,
+    int result = sqlite3_exec(dbConnection_, "PRAGMA foreign_keys = ON;", NULL, NULL, &errmsg);
-        "PRAGMA foreign_keys = ON;",
-        NULL,
-        NULL,
-        &errmsg);
     if (result != SQLITE_OK)
     {
         if (errmsg)
@@ -99,12 +89,10 @@ void obelisk::KnowledgeBase::addEntities(std::vector<obelisk::Entity>& entities)
         {
             entity.insertEntity(dbConnection_);
         }
-        catch (obelisk::DatabaseException::ConstraintException& exception)
+        catch (obelisk::DatabaseConstraintException& exception)
         {
             // ignore unique constraint error
-            if (std::strcmp(exception.what(),
+            if (std::strcmp(exception.what(), "UNIQUE constraint failed: entity.name") != 0)
-                    "UNIQUE constraint failed: entity.name")
-                != 0)
             {
                 throw;
             }
@@ -120,12 +108,10 @@ void obelisk::KnowledgeBase::addVerbs(std::vector<obelisk::Verb>& verbs)
         {
             verb.insertVerb(dbConnection_);
         }
-        catch (obelisk::DatabaseException::ConstraintException& exception)
+        catch (obelisk::DatabaseConstraintException& exception)
         {
             // ignore unique constraint error
-            if (std::strcmp(exception.what(),
+            if (std::strcmp(exception.what(), "UNIQUE constraint failed: verb.name") != 0)
-                    "UNIQUE constraint failed: verb.name")
-                != 0)
             {
                 throw;
             }
@@ -141,7 +127,7 @@ void obelisk::KnowledgeBase::addFacts(std::vector<obelisk::Fact>& facts)
         {
             fact.insertFact(dbConnection_);
         }
-        catch (obelisk::DatabaseException::ConstraintException& exception)
+        catch (obelisk::DatabaseConstraintException& exception)
         {
             // ignore unique constraint error
             if (std::strcmp(exception.what(),
@@ -169,9 +155,7 @@ void obelisk::KnowledgeBase::getFact(obelisk::Fact& fact)
     fact.selectFact(dbConnection_);
 }
 
-void obelisk::KnowledgeBase::getFloat(float& result1,
+void obelisk::KnowledgeBase::getFloat(float& result1, float& result2, double var)
-    float& result2,
-    double var)
 {
     result1 = (float) var;
     result2 = (float) (var - (double) result1);

src/knowledge_base.h

@@ -14,57 +14,188 @@
 
 namespace obelisk
 {
+    /**
+     * @brief The KnowledgeBase class represents a collection of facts, rules,
+     * actions, and related language connectors.
+     *
+     */
     class KnowledgeBase
     {
         private:
-            const int DEFAULT_FLAGS
+            /**
-                = SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE;
+             * @brief The filename of the opened knowledge base.
+             *
+             */
             const char* filename_;
+
+            /**
+             * @brief The SQLite connection handle.
+             *
+             */
             sqlite3* dbConnection_ = nullptr;
+
+            /**
+             * @brief The user passed flags to use when opening the database.
+             *
+             */
             int flags_;
 
+            /**
+             * @brief Enable foreign key functionality in the open database.
+             *
+             * This must always be done when the connection is opened or it will
+             * not enforce the foreign key constraints.
+             */
             void enableForeignKeys();
+
+            /**
+             * @brief Create the tables in the database.
+             *
+             * @param[in] function This function is called to create the table.
+             */
             void createTable(std::function<const char*()> function);
 
         public:
+            /**
+             * @brief Construct a new KnowledgeBase object.
+             *
+             * @param[in] filename The name of the file to save the knowledge
+             * base as.
+             * @param[in] flags The flags to open the knowledge base with.
+             */
             KnowledgeBase(const char* filename, int flags);
 
+            /**
+             * @brief Construct a new KnowledgeBase object.
+             *
+             * @param[in] filename The name of the file to save the knowledge
+             * base as.
+             */
             KnowledgeBase(const char* filename) :
-                KnowledgeBase(filename,
+                KnowledgeBase(filename, SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE)
-                    SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE)
             {
             }
 
+            /**
+             * @brief Destroy the KnowledgeBase object.
+             *
+             * This will close the opened knowledge base before destroying it.
+             */
             ~KnowledgeBase();
 
+            /**
+             * @brief Add entities to the knowledge base.
+             *
+             * @param[in,out] entities The entities to add. If the insert is
+             * successful it will have a row ID, if not the ID will be 0.
+             */
             void addEntities(std::vector<obelisk::Entity>& entities);
+
+            /**
+             * @brief Add verbs to the knowledge base.
+             *
+             * @param[in,out] verbs The verbs to add. If the insert is
+             * successful it will have a row ID, if not the ID will be 0.
+             */
             void addVerbs(std::vector<obelisk::Verb>& verbs);
+
+            /**
+             * @brief Add facts to the database.
+             *
+             * @param[in,out] facts The facts to add. If the insert is
+             * successful it will have a row ID, if not the ID will be 0.
+             */
             void addFacts(std::vector<obelisk::Fact>& facts);
 
+            /**
+             * @brief Get an entity object based on the ID it contains.
+             *
+             * @param[in,out] entity The Entity object should contain just the
+             * ID and the rest will be filled in.
+             */
             void getEntity(obelisk::Entity& entity);
+
+            /**
+             * @brief Get a verb object based on the ID it contains.
+             *
+             * @param[in,out] verb The Verb object should contain just the ID
+             * and the rest will be filled in.
+             */
             void getVerb(obelisk::Verb& verb);
+
+            /**
+             * @brief Get a fact object based on the ID it contains.
+             *
+             * @param[in,out] fact The fact object should contain just the ID
+             * and the rest will be filled in.
+             */
             void getFact(obelisk::Fact& fact);
 
-            void getDouble(double& result, float var1, float var2);
+            /**
+             * @brief Take a float and divide it into 2 floats.
+             *
+             * This is useful to store doubles in SQLite since SQLite doesn't
+             * have a double type.
+             * Instead just store the 2 floats in the database. Then after
+             * selecting them combine them.
+             *
+             * @param[out] result1 The first float generated from the double.
+             * @param[out] result2 The second float generated from the double.
+             * @param[in] var The double to split into the 2 floats.
+             */
             void getFloat(float& result1, float& result2, double var);
+
+            /**
+             * @brief Combines 2 separated floats back into a double.
+             *
+             * This will recombine the separated floats from the getFloat
+             * method.
+             *
+             * @param[out] result The double generated from the combined floats.
+             * @param[in] var1 The first float to combine.
+             * @param[in] var2 The second float to combine.
+             */
+            void getDouble(double& result, float var1, float var2);
     };
 
+    /**
+     * @brief Exception thrown by the KnowledgeBase.
+     *
+     */
     class KnowledgeBaseException : public std::exception
     {
         private:
+            /**
+             * @brief The error message given.
+             *
+             */
             const std::string errorMessage_;
 
         public:
+            /**
+             * @brief Construct a new KnowledgeBaseException object.
+             *
+             */
             KnowledgeBaseException() :
                 errorMessage_("an unknown error ocurred")
             {
             }
 
+            /**
+             * @brief Construct a new KnowledgeBaseException object.
+             *
+             * @param[in] errorMessage The error message given when thrown.
+             */
             KnowledgeBaseException(const std::string& errorMessage) :
                 errorMessage_(errorMessage)
             {
             }
 
+            /**
+             * @brief Get the error message that occurred.
+             *
+             * @return const char* Returns the error message.
+             */
             const char* what() const noexcept
             {
                 return errorMessage_.c_str();

src/lexer.h

@@ -5,58 +5,178 @@
 
 namespace obelisk
 {
+    /**
+     * @brief The Lexer reads and identifies tokens in the obelisk source code.
+     *
+     */
     class Lexer
     {
         private:
+            /**
+             * @brief The last found identifier.
+             *
+             */
             std::string identifier_;
+            /**
+             * @brief The last found number.
+             *
+             */
             double numberValue_;
 
+            /**
+             * @brief Set the identifier.
+             *
+             * @param[in] identifier The new identifier.
+             */
             void setIdentifier(const std::string& identifier);
+            /**
+             * @brief Erase the last identifier.
+             *
+             */
             void eraseIdentifier();
+            /**
+             * @brief Add the last found char to the end of the identifier.
+             *
+             * @param[in] lastChar  The last char that was found.
+             */
             void appendIdentifier(int lastChar);
+            /**
+             * @brief Set the number value.
+             *
+             * @param[in] numberValue The new number value.
+             */
             void setNumberValue(double numberValue);
+            /**
+             * @brief Comment the rest of the line.
+             *
+             * @param[in] lastChar The char to check to see if it in the end of
+             * the line.
+             */
             void commentLine(int* lastChar);
 
         public:
+            /**
+             * @brief These token represent recognized language keywords and
+             * language functionality.
+             *
+             */
             enum Token
             {
+                /**
+                 * @brief End of file is returned when the source code is
+                 * finished.
+                 *
+                 */
                 kTokenEof = -1,
 
-                // commands
+                /**
+                 * @brief A fact which is a relationship between 2 entities.
+                 *
+                 */
                 kTokenFact   = -2,
+                /**
+                 * @brief A rule which is a relationship between a new fact a
+                 * existing fact.
+                 *
+                 */
                 kTokenRule   = -3,
+                /**
+                 * @brief An action to take if a fact is true.
+                 *
+                 */
                 kTokenAction = -4,
+                /**
+                 * @brief A definition of a new function.
+                 *
+                 */
                 kTokenDef    = -5,
+                /**
+                 * @brief An external function that will be linked to.
+                 *
+                 */
                 kTokenExtern = -6,
 
-                // primary
+                /**
+                 * @brief An identifier which is a alphanumeric value.
+                 *
+                 */
                 kTokenIdentifier = -7,
+                /**
+                 * @brief A double floating point value.
+                 *
+                 */
                 kTokenNumber     = -8,
+                /**
+                 * @brief A string.
+                 *
+                 */
                 kTokenString     = -9
             };
 
+            /**
+             * @brief Gets the next token in the source code.
+             *
+             * @throws LexerException when an invalid token is found.
+             * @return int Returns a Token value or char if no known token was
+             * found.
+             */
             int getToken();
 
+            /**
+             * @brief Get the last identifier.
+             *
+             * @return const std::string& Returns a string that contains the
+             * last found identifier.
+             */
             const std::string& getIdentifier();
+
+            /**
+             * @brief Get the last number value.
+             *
+             * @return double Return the last number that was found.
+             */
             double getNumberValue();
     };
 
+    /**
+     * @brief Lexer exception class.
+     *
+     */
     class LexerException : public std::exception
     {
         private:
+            /**
+             * @brief The error message from the exception.
+             *
+             */
             const std::string errorMessage_;
 
         public:
+            /**
+             * @brief Construct a new LexerException object.
+             *
+             */
             LexerException() :
                 errorMessage_("an unknown error ocurred")
             {
             }
 
+            /**
+             * @brief Construct a new LexerException object.
+             *
+             * @param[in] errorMessage Error message to include.
+             */
             LexerException(const std::string& errorMessage) :
                 errorMessage_(errorMessage)
             {
             }
 
+            /**
+             * @brief Return the exception's error message.
+             *
+             * @return const char* Returns a string containing the error
+             * message.
+             */
             const char* what() const noexcept
             {
                 return errorMessage_.c_str();

src/models/action.h

@@ -5,43 +5,104 @@
 
 namespace obelisk
 {
+    /**
+     * @brief The Action model represents an action to take when a fact is true
+     * or false.
+     *
+     */
     class Action
     {
         private:
+            /**
+             * @brief The ID of the Action in the knowledge base.
+             *
+             */
             int id_;
+
+            /**
+             * @brief The name of the Action.
+             *
+             */
             std::string name_;
 
         public:
+            /**
+             * @brief Construct a new Action object.
+             *
+             */
             Action() :
                 id_(0),
                 name_("")
             {
             }
 
+            /**
+             * @brief Construct a new Action object.
+             *
+             * @param[in] id The ID of the Action.
+             */
             Action(int id) :
                 id_(id),
                 name_("")
             {
             }
 
+            /**
+             * @brief Construct a new Action object.
+             *
+             * @param[in] name The name of the Action.
+             */
             Action(std::string name) :
                 id_(0),
                 name_(name)
             {
             }
 
+            /**
+             * @brief Construct a new Action object.
+             *
+             * @param[in] id The ID of the Action.
+             * @param[in] name The name of the Action.
+             */
             Action(int id, std::string name) :
                 id_(id),
                 name_(name)
             {
             }
 
+            /**
+             * @brief Create the Action table in the knowledge base.
+             *
+             * @return const char* Returns the query used to create the table.
+             */
             static const char* createTable();
 
+            /**
+             * @brief Get the ID of the Action.
+             *
+             * @return int& Returns the ID.
+             */
             int& getId();
+
+            /**
+             * @brief Set the ID of the Action.
+             *
+             * @param[in] id Set the ID of the Action.
+             */
             void setId(int id);
 
+            /**
+             * @brief Get the name of the Action.
+             *
+             * @return std::string& The Action name.
+             */
             std::string& getName();
+
+            /**
+             * @brief Set the name of the Action.
+             *
+             * @param[in] name The name of the Action.
+             */
             void setName(std::string name);
     };
 } // namespace obelisk

src/models/entity.cpp

@@ -21,11 +21,7 @@ void obelisk::Entity::selectEntity(sqlite3* dbConnection)
 
     sqlite3_stmt* ppStmt = nullptr;
 
-    auto result = sqlite3_prepare_v2(dbConnection,
+    auto result = sqlite3_prepare_v2(dbConnection, "SELECT id, name FROM entity WHERE name=?", -1, &ppStmt, nullptr);
-        "SELECT id, name FROM entity WHERE name=?",
-        -1,
-        &ppStmt,
-        nullptr);
 
     if (result != SQLITE_OK)
     {
@@ -38,13 +34,13 @@ void obelisk::Entity::selectEntity(sqlite3* dbConnection)
         case SQLITE_OK :
             break;
         case SQLITE_TOOBIG :
-            throw obelisk::DatabaseException::SizeException();
+            throw obelisk::DatabaseSizeException();
             break;
         case SQLITE_RANGE :
-            throw obelisk::DatabaseException::RangeException();
+            throw obelisk::DatabaseRangeException();
             break;
         case SQLITE_NOMEM :
-            throw obelisk::DatabaseException::MemoryException();
+            throw obelisk::DatabaseMemoryException();
             break;
         default :
             throw obelisk::DatabaseException(sqlite3_errmsg(dbConnection));
@@ -62,10 +58,10 @@ void obelisk::Entity::selectEntity(sqlite3* dbConnection)
             setName((char*) sqlite3_column_text(ppStmt, 1));
             break;
         case SQLITE_BUSY :
-            throw obelisk::DatabaseException::BusyException();
+            throw obelisk::DatabaseBusyException();
             break;
         case SQLITE_MISUSE :
-            throw obelisk::DatabaseException::MisuseException();
+            throw obelisk::DatabaseMisuseException();
             break;
         default :
             throw obelisk::DatabaseException(sqlite3_errmsg(dbConnection));
@@ -89,30 +85,25 @@ void obelisk::Entity::insertEntity(sqlite3* dbConnection)
 
     sqlite3_stmt* ppStmt = nullptr;
 
-    auto result = sqlite3_prepare_v2(dbConnection,
+    auto result = sqlite3_prepare_v2(dbConnection, "INSERT INTO entity (name) VALUES (?)", -1, &ppStmt, nullptr);
-        "INSERT INTO entity (name) VALUES (?)",
-        -1,
-        &ppStmt,
-        nullptr);
     if (result != SQLITE_OK)
     {
         throw obelisk::DatabaseException(sqlite3_errmsg(dbConnection));
     }
 
-    result
+    result = sqlite3_bind_text(ppStmt, 1, getName().c_str(), -1, SQLITE_TRANSIENT);
-        = sqlite3_bind_text(ppStmt, 1, getName().c_str(), -1, SQLITE_TRANSIENT);
     switch (result)
     {
         case SQLITE_OK :
             break;
         case SQLITE_TOOBIG :
-            throw obelisk::DatabaseException::SizeException();
+            throw obelisk::DatabaseSizeException();
             break;
         case SQLITE_RANGE :
-            throw obelisk::DatabaseException::RangeException();
+            throw obelisk::DatabaseRangeException();
             break;
         case SQLITE_NOMEM :
-            throw obelisk::DatabaseException::MemoryException();
+            throw obelisk::DatabaseMemoryException();
             break;
         default :
             throw obelisk::DatabaseException(sqlite3_errmsg(dbConnection));
@@ -127,13 +118,12 @@ void obelisk::Entity::insertEntity(sqlite3* dbConnection)
             sqlite3_set_last_insert_rowid(dbConnection, 0);
             break;
         case SQLITE_CONSTRAINT :
-            throw obelisk::DatabaseException::ConstraintException(
+            throw obelisk::DatabaseConstraintException(sqlite3_errmsg(dbConnection));
-                sqlite3_errmsg(dbConnection));
         case SQLITE_BUSY :
-            throw obelisk::DatabaseException::BusyException();
+            throw obelisk::DatabaseBusyException();
             break;
         case SQLITE_MISUSE :
-            throw obelisk::DatabaseException::MisuseException();
+            throw obelisk::DatabaseMisuseException();
             break;
         default :
             throw obelisk::DatabaseException(sqlite3_errmsg(dbConnection));

src/models/entity.h

@@ -7,46 +7,119 @@
 
 namespace obelisk
 {
+    /**
+     * @brief The Entity model represents either a left or right side entity,
+     * typically used in facts and rules.
+     *
+     */
     class Entity
     {
         private:
+            /**
+             * @brief The ID of the Entity.
+             *
+             */
             int id_;
+            /**
+             * @brief The name of the Entity.
+             *
+             */
             std::string name_;
 
         public:
+            /**
+             * @brief Construct a new Entity object.
+             *
+             */
             Entity() :
                 id_(0),
                 name_("")
             {
             }
 
+            /**
+             * @brief Construct a new Entity object.
+             *
+             * @param[in] id The ID of the Entity.
+             */
             Entity(int id) :
                 id_(id),
                 name_("")
             {
             }
 
+            /**
+             * @brief Construct a new Entity object.
+             *
+             * @param[in] name The name of the Entity.
+             */
             Entity(std::string name) :
                 id_(0),
                 name_(name)
             {
             }
 
+            /**
+             * @brief Construct a new Entity object.
+             *
+             * @param[in] id The ID of the Entity.
+             * @param[in] name The name of the Entity.
+             */
             Entity(int id, std::string name) :
                 id_(id),
                 name_(name)
             {
             }
 
+            /**
+             * @brief Create the table in the knowledge base.
+             *
+             * @return const char* Returns the query used to create the table.
+             */
             static const char* createTable();
 
+            /**
+             * @brief Get the ID of the Entity.
+             *
+             * @return int& Returns the ID.
+             */
             int& getId();
+
+            /**
+             * @brief Set the ID of the Entity.
+             *
+             * @param[in] id The ID of the Entity.
+             */
             void setId(int id);
 
+            /**
+             * @brief Get the name of the Entity.
+             *
+             * @return std::string& The name of the Entity.
+             */
             std::string& getName();
+
+            /**
+             * @brief Set the name of the Entity.
+             *
+             * @param[in] name The name of the Entity.
+             */
             void setName(std::string name);
 
+            /**
+             * @brief Select an Entity from the database based on the object's
+             * ID.
+             *
+             * @param[in] dbConnection The database connection to use.
+             */
             void selectEntity(sqlite3* dbConnection);
+
+            /**
+             * @brief Insert an Entity into the database based on the object's
+             * fields.
+             *
+             * @param[in] dbConnection The database connection to use.
+             */
             void insertEntity(sqlite3* dbConnection);
     };
 } // namespace obelisk

src/models/error.h

@@ -8,8 +8,8 @@ namespace obelisk
 {
     class DatabaseException : public std::exception
     {
-        private:
+        protected:
-            const std::string errorMessage_;
+            std::string errorMessage_;
 
         public:
             DatabaseException() :
@@ -18,8 +18,7 @@ namespace obelisk
             }
 
             DatabaseException(const int errorCode) :
-                errorMessage_(
+                errorMessage_("database error " + std::to_string(errorCode) + " ocurred")
-                    "database error " + std::to_string(errorCode) + " ocurred")
             {
             }
 
@@ -28,118 +27,75 @@ namespace obelisk
             {
             }
 
-            const char* what() const noexcept
+            virtual const char* what() const noexcept
             {
                 return errorMessage_.c_str();
             }
 
-            class SizeException : public std::exception
+            virtual void setErrorMessage(const std::string errorMessage)
             {
-                private:
+                errorMessage_ = errorMessage;
-                    const std::string errorMessage_;
-
-                public:
-                    SizeException() :
-                        errorMessage_("size of string or blob exceeds limits")
-                    {
-                    }
-
-                    const char* what() const noexcept
-                    {
-                        return errorMessage_.c_str();
             }
     };
 
-            class RangeException : public std::exception
+    class DatabaseSizeException : public obelisk::DatabaseException
     {
-                private:
-                    const std::string errorMessage_;
-
         public:
-                    RangeException() :
+            DatabaseSizeException()
-                        errorMessage_("parameter index is out of range")
             {
-                    }
+                setErrorMessage("size of string or blob exceeds limits");
-
-                    const char* what() const noexcept
-                    {
-                        return errorMessage_.c_str();
             }
     };
 
-            class MemoryException : public std::exception
+    class DatabaseRangeException : public obelisk::DatabaseException
     {
-                private:
-                    const std::string errorMessage_;
-
         public:
-                    MemoryException() :
+            DatabaseRangeException()
-                        errorMessage_("not enough memory for operation")
             {
-                    }
+                setErrorMessage("parameter index is out of range");
-
-                    const char* what() const noexcept
-                    {
-                        return errorMessage_.c_str();
             }
     };
 
-            class BusyException : public std::exception
+    class DatabaseMemoryException : public obelisk::DatabaseException
     {
-                private:
-                    const std::string errorMessage_;
-
         public:
-                    BusyException() :
+            DatabaseMemoryException()
-                        errorMessage_(
-                            "database was busy and operation not performed")
             {
-                    }
+                setErrorMessage("not enough memory for operation");
-
-                    const char* what() const noexcept
-                    {
-                        return errorMessage_.c_str();
             }
     };
 
-            class MisuseException : public std::exception
+    class DatabaseBusyException : public obelisk::DatabaseException
     {
-                private:
-                    const std::string errorMessage_;
-
         public:
-                    MisuseException() :
+            DatabaseBusyException()
-                        errorMessage_("misuse of the database routine")
             {
-                    }
+                setErrorMessage("database was busy and operation was not performed");
-
-                    const char* what() const noexcept
-                    {
-                        return errorMessage_.c_str();
             }
     };
 
-            class ConstraintException : public std::exception
+    class DatabaseMisuseException : public obelisk::DatabaseException
     {
-                private:
-                    const std::string errorMessage_;
-
         public:
-                    ConstraintException() :
+            DatabaseMisuseException()
-                        errorMessage_("a constraint exception occurred")
-                    {
-                    }
 
-                    ConstraintException(const std::string& errorMessage) :
-                        errorMessage_(errorMessage)
             {
-                    }
+                setErrorMessage("misuse of the database routine");
-
-                    const char* what() const noexcept
-                    {
-                        return errorMessage_.c_str();
             }
     };
+
+    class DatabaseConstraintException : public obelisk::DatabaseException
+    {
+        public:
+            DatabaseConstraintException()
+            {
+                setErrorMessage("a constraint exception occurred");
+            }
+
+            DatabaseConstraintException(const std::string& errorMessage)
+            {
+                setErrorMessage(errorMessage);
+            }
     };
 } // namespace obelisk
 

src/models/fact.cpp

@@ -9,6 +9,7 @@ const char* obelisk::Fact::createTable()
             "left_entity"  INTEGER NOT NULL,
             "right_entity" INTEGER NOT NULL,
             "verb"         INTEGER NOT NULL,
+            "is_true"      INTEGER NOT NULL DEFAULT 0,
             PRIMARY KEY("id" AUTOINCREMENT),
             UNIQUE("left_entity", "right_entity", "verb")
             FOREIGN KEY("verb") REFERENCES "verb"("id") ON DELETE RESTRICT,
@@ -43,13 +44,13 @@ void obelisk::Fact::selectFact(sqlite3* dbConnection)
         case SQLITE_OK :
             break;
         case SQLITE_TOOBIG :
-            throw obelisk::DatabaseException::SizeException();
+            throw obelisk::DatabaseSizeException();
             break;
         case SQLITE_RANGE :
-            throw obelisk::DatabaseException::RangeException();
+            throw obelisk::DatabaseRangeException();
             break;
         case SQLITE_NOMEM :
-            throw obelisk::DatabaseException::MemoryException();
+            throw obelisk::DatabaseMemoryException();
             break;
         default :
             throw obelisk::DatabaseException(sqlite3_errmsg(dbConnection));
@@ -62,13 +63,13 @@ void obelisk::Fact::selectFact(sqlite3* dbConnection)
         case SQLITE_OK :
             break;
         case SQLITE_TOOBIG :
-            throw obelisk::DatabaseException::SizeException();
+            throw obelisk::DatabaseSizeException();
             break;
         case SQLITE_RANGE :
-            throw obelisk::DatabaseException::RangeException();
+            throw obelisk::DatabaseRangeException();
             break;
         case SQLITE_NOMEM :
-            throw obelisk::DatabaseException::MemoryException();
+            throw obelisk::DatabaseMemoryException();
             break;
         default :
             throw obelisk::DatabaseException(sqlite3_errmsg(dbConnection));
@@ -81,13 +82,13 @@ void obelisk::Fact::selectFact(sqlite3* dbConnection)
         case SQLITE_OK :
             break;
         case SQLITE_TOOBIG :
-            throw obelisk::DatabaseException::SizeException();
+            throw obelisk::DatabaseSizeException();
             break;
         case SQLITE_RANGE :
-            throw obelisk::DatabaseException::RangeException();
+            throw obelisk::DatabaseRangeException();
             break;
         case SQLITE_NOMEM :
-            throw obelisk::DatabaseException::MemoryException();
+            throw obelisk::DatabaseMemoryException();
             break;
         default :
             throw obelisk::DatabaseException(sqlite3_errmsg(dbConnection));
@@ -107,10 +108,10 @@ void obelisk::Fact::selectFact(sqlite3* dbConnection)
             getVerb().setId(sqlite3_column_int(ppStmt, 3));
             break;
         case SQLITE_BUSY :
-            throw obelisk::DatabaseException::BusyException();
+            throw obelisk::DatabaseBusyException();
             break;
         case SQLITE_MISUSE :
-            throw obelisk::DatabaseException::MisuseException();
+            throw obelisk::DatabaseMisuseException();
             break;
         default :
             throw obelisk::DatabaseException(sqlite3_errmsg(dbConnection));
@@ -149,13 +150,13 @@ void obelisk::Fact::insertFact(sqlite3* dbConnection)
         case SQLITE_OK :
             break;
         case SQLITE_TOOBIG :
-            throw obelisk::DatabaseException::SizeException();
+            throw obelisk::DatabaseSizeException();
             break;
         case SQLITE_RANGE :
-            throw obelisk::DatabaseException::RangeException();
+            throw obelisk::DatabaseRangeException();
             break;
         case SQLITE_NOMEM :
-            throw obelisk::DatabaseException::MemoryException();
+            throw obelisk::DatabaseMemoryException();
             break;
         default :
             throw obelisk::DatabaseException(sqlite3_errmsg(dbConnection));
@@ -168,13 +169,13 @@ void obelisk::Fact::insertFact(sqlite3* dbConnection)
         case SQLITE_OK :
             break;
         case SQLITE_TOOBIG :
-            throw obelisk::DatabaseException::SizeException();
+            throw obelisk::DatabaseSizeException();
             break;
         case SQLITE_RANGE :
-            throw obelisk::DatabaseException::RangeException();
+            throw obelisk::DatabaseRangeException();
             break;
         case SQLITE_NOMEM :
-            throw obelisk::DatabaseException::MemoryException();
+            throw obelisk::DatabaseMemoryException();
             break;
         default :
             throw obelisk::DatabaseException(sqlite3_errmsg(dbConnection));
@@ -187,13 +188,13 @@ void obelisk::Fact::insertFact(sqlite3* dbConnection)
         case SQLITE_OK :
             break;
         case SQLITE_TOOBIG :
-            throw obelisk::DatabaseException::SizeException();
+            throw obelisk::DatabaseSizeException();
             break;
         case SQLITE_RANGE :
-            throw obelisk::DatabaseException::RangeException();
+            throw obelisk::DatabaseRangeException();
             break;
         case SQLITE_NOMEM :
-            throw obelisk::DatabaseException::MemoryException();
+            throw obelisk::DatabaseMemoryException();
             break;
         default :
             throw obelisk::DatabaseException(sqlite3_errmsg(dbConnection));
@@ -208,13 +209,12 @@ void obelisk::Fact::insertFact(sqlite3* dbConnection)
             sqlite3_set_last_insert_rowid(dbConnection, 0);
             break;
         case SQLITE_CONSTRAINT :
-            throw obelisk::DatabaseException::ConstraintException(
+            throw obelisk::DatabaseConstraintException(sqlite3_errmsg(dbConnection));
-                sqlite3_errmsg(dbConnection));
         case SQLITE_BUSY :
-            throw obelisk::DatabaseException::BusyException();
+            throw obelisk::DatabaseBusyException();
             break;
         case SQLITE_MISUSE :
-            throw obelisk::DatabaseException::MisuseException();
+            throw obelisk::DatabaseMisuseException();
             break;
         default :
             throw obelisk::DatabaseException(sqlite3_errmsg(dbConnection));

src/models/fact.h

@@ -34,9 +34,7 @@ namespace obelisk
             {
             }
 
-            Fact(obelisk::Entity leftEntity,
+            Fact(obelisk::Entity leftEntity, obelisk::Entity rightEntity, obelisk::Verb verb) :
-                obelisk::Entity rightEntity,
-                obelisk::Verb verb) :
                 id_(0),
                 leftEntity_(leftEntity),
                 rightEntity_(rightEntity),
@@ -44,10 +42,7 @@ namespace obelisk
             {
             }
 
-            Fact(int id,
+            Fact(int id, obelisk::Entity leftEntity, obelisk::Entity rightEntity, obelisk::Verb verb) :
-                obelisk::Entity leftEntity,
-                obelisk::Entity rightEntity,
-                obelisk::Verb verb) :
                 id_(id),
                 leftEntity_(leftEntity),
                 rightEntity_(rightEntity),

src/models/suggest_action.h

@@ -33,9 +33,7 @@ namespace obelisk
             {
             }
 
-            SuggestAction(obelisk::Fact fact,
+            SuggestAction(obelisk::Fact fact, obelisk::Action trueAction, obelisk::Action falseAction) :
-                obelisk::Action trueAction,
-                obelisk::Action falseAction) :
                 id_(0),
                 fact_(fact),
                 trueAction_(trueAction),
@@ -43,10 +41,7 @@ namespace obelisk
             {
             }
 
-            SuggestAction(int id,
+            SuggestAction(int id, obelisk::Fact fact, obelisk::Action trueAction, obelisk::Action falseAction) :
-                obelisk::Fact fact,
-                obelisk::Action trueAction,
-                obelisk::Action falseAction) :
                 id_(id),
                 fact_(fact),
                 trueAction_(trueAction),

src/models/verb.cpp

@@ -23,11 +23,7 @@ void obelisk::Verb::selectVerb(sqlite3* dbConnection)
 
     sqlite3_stmt* ppStmt = nullptr;
 
-    auto result = sqlite3_prepare_v2(dbConnection,
+    auto result = sqlite3_prepare_v2(dbConnection, "SELECT id, name FROM verb WHERE name=?", -1, &ppStmt, nullptr);
-        "SELECT id, name FROM verb WHERE name=?",
-        -1,
-        &ppStmt,
-        nullptr);
     if (result != SQLITE_OK)
     {
         throw obelisk::DatabaseException(sqlite3_errmsg(dbConnection));
@@ -39,13 +35,13 @@ void obelisk::Verb::selectVerb(sqlite3* dbConnection)
         case SQLITE_OK :
             break;
         case SQLITE_TOOBIG :
-            throw obelisk::DatabaseException::SizeException();
+            throw obelisk::DatabaseSizeException();
             break;
         case SQLITE_RANGE :
-            throw obelisk::DatabaseException::RangeException();
+            throw obelisk::DatabaseRangeException();
             break;
         case SQLITE_NOMEM :
-            throw obelisk::DatabaseException::MemoryException();
+            throw obelisk::DatabaseMemoryException();
             break;
         default :
             throw obelisk::DatabaseException(sqlite3_errmsg(dbConnection));
@@ -63,10 +59,10 @@ void obelisk::Verb::selectVerb(sqlite3* dbConnection)
             setName((char*) sqlite3_column_text(ppStmt, 1));
             break;
         case SQLITE_BUSY :
-            throw obelisk::DatabaseException::BusyException();
+            throw obelisk::DatabaseBusyException();
             break;
         case SQLITE_MISUSE :
-            throw obelisk::DatabaseException::MisuseException();
+            throw obelisk::DatabaseMisuseException();
             break;
         default :
             throw obelisk::DatabaseException(sqlite3_errmsg(dbConnection));
@@ -89,30 +85,25 @@ void obelisk::Verb::insertVerb(sqlite3* dbConnection)
 
     sqlite3_stmt* ppStmt = nullptr;
 
-    auto result = sqlite3_prepare_v2(dbConnection,
+    auto result = sqlite3_prepare_v2(dbConnection, "INSERT INTO verb (name) VALUES (?)", -1, &ppStmt, nullptr);
-        "INSERT INTO verb (name) VALUES (?)",
-        -1,
-        &ppStmt,
-        nullptr);
     if (result != SQLITE_OK)
     {
         throw obelisk::DatabaseException(sqlite3_errmsg(dbConnection));
     }
 
-    result
+    result = sqlite3_bind_text(ppStmt, 1, getName().c_str(), -1, SQLITE_TRANSIENT);
-        = sqlite3_bind_text(ppStmt, 1, getName().c_str(), -1, SQLITE_TRANSIENT);
     switch (result)
     {
         case SQLITE_OK :
             break;
         case SQLITE_TOOBIG :
-            throw obelisk::DatabaseException::SizeException();
+            throw obelisk::DatabaseSizeException();
             break;
         case SQLITE_RANGE :
-            throw obelisk::DatabaseException::RangeException();
+            throw obelisk::DatabaseRangeException();
             break;
         case SQLITE_NOMEM :
-            throw obelisk::DatabaseException::MemoryException();
+            throw obelisk::DatabaseMemoryException();
             break;
         default :
             throw obelisk::DatabaseException(sqlite3_errmsg(dbConnection));
@@ -127,13 +118,12 @@ void obelisk::Verb::insertVerb(sqlite3* dbConnection)
             sqlite3_set_last_insert_rowid(dbConnection, 0);
             break;
         case SQLITE_CONSTRAINT :
-            throw obelisk::DatabaseException::ConstraintException(
+            throw obelisk::DatabaseConstraintException(sqlite3_errmsg(dbConnection));
-                sqlite3_errmsg(dbConnection));
         case SQLITE_BUSY :
-            throw obelisk::DatabaseException::BusyException();
+            throw obelisk::DatabaseBusyException();
             break;
         case SQLITE_MISUSE :
-            throw obelisk::DatabaseException::MisuseException();
+            throw obelisk::DatabaseMisuseException();
             break;
         default :
             throw obelisk::DatabaseException(sqlite3_errmsg(dbConnection));

src/obelisk.cpp

@@ -8,15 +8,14 @@
 #include <limits>
 #include <memory>
 
-static int mainLoop()
+static int obelisk::mainLoop()
 {
     auto parser = std::unique_ptr<obelisk::Parser> {new obelisk::Parser()};
     std::unique_ptr<obelisk::KnowledgeBase> kb;
 
     try
     {
-        kb = std::unique_ptr<obelisk::KnowledgeBase> {
+        kb = std::unique_ptr<obelisk::KnowledgeBase> {new obelisk::KnowledgeBase("cromer.kb")};
-            new obelisk::KnowledgeBase("cromer.kb")};
     }
     catch (obelisk::KnowledgeBaseException& exception)
     {
@@ -44,10 +43,8 @@ static int mainLoop()
             case obelisk::Lexer::kTokenEof :
                 return EXIT_SUCCESS;
             case ';' : // ignore top-level semicolons.
-                std::cout << "Identifier: "
+                std::cout << "Identifier: " << parser->getLexer()->getIdentifier() << std::endl;
-                          << parser->getLexer()->getIdentifier() << std::endl;
+                std::cout << "Num: " << parser->getLexer()->getNumberValue() << std::endl;
-                std::cout << "Num: " << parser->getLexer()->getNumberValue()
-                          << std::endl;
                 try
                 {
                     parser->getNextToken();
@@ -109,5 +106,5 @@ int main(int argc, char** argv)
         return EXIT_FAILURE;
     }*/
 
-    return mainLoop();
+    return obelisk::mainLoop();
 }

src/obelisk.h

@@ -1 +1,15 @@
+/**
+ * @brief The obelisk namespace contains everything needed to compile obelisk
+ * code.
+ *
+ */
+namespace obelisk
+{
+    /**
+     * @brief This is the main loop for obelisk.
+     * This loop handles lexing and parsing of obelisk source code.
+     *
+     * @return int Returns EXIT_SUCCESS or EXIT_FAILURE.
+     */
     static int mainLoop();
+} // namespace obelisk

src/parser.cpp

@@ -44,15 +44,13 @@ void obelisk::Parser::setCurrentToken(int currentToken)
     currentToken_ = currentToken;
 }
 
-std::unique_ptr<obelisk::ExpressionAST> obelisk::Parser::logError(
+std::unique_ptr<obelisk::ExpressionAST> obelisk::Parser::logError(const char* str)
-    const char* str)
 {
     fprintf(stderr, "Error: %s\n", str);
     return nullptr;
 }
 
-std::unique_ptr<obelisk::PrototypeAST> obelisk::Parser::logErrorPrototype(
+std::unique_ptr<obelisk::PrototypeAST> obelisk::Parser::logErrorPrototype(const char* str)
-    const char* str)
 {
     logError(str);
     return nullptr;
@@ -86,14 +84,12 @@ std::unique_ptr<obelisk::ExpressionAST> obelisk::Parser::parsePrimary()
 
 std::unique_ptr<obelisk::ExpressionAST> obelisk::Parser::parseNumberExpression()
 {
-    auto result = std::make_unique<obelisk::NumberExpressionAST>(
+    auto result = std::make_unique<obelisk::NumberExpressionAST>(getLexer()->getNumberValue());
-        getLexer()->getNumberValue());
     getNextToken();
     return result;
 }
 
-std::unique_ptr<obelisk::ExpressionAST>
+std::unique_ptr<obelisk::ExpressionAST> obelisk::Parser::parseParenthesisExpression()
-    obelisk::Parser::parseParenthesisExpression()
 {
     getNextToken();
     auto v = parseExpression();
@@ -110,8 +106,7 @@ std::unique_ptr<obelisk::ExpressionAST>
     return v;
 }
 
-std::unique_ptr<obelisk::ExpressionAST>
+std::unique_ptr<obelisk::ExpressionAST> obelisk::Parser::parseIdentifierExpression()
-    obelisk::Parser::parseIdentifierExpression()
 {
     std::string idName = getLexer()->getIdentifier();
     getNextToken();
@@ -181,8 +176,7 @@ std::unique_ptr<obelisk::PrototypeAST> obelisk::Parser::parsePrototype()
 
     getNextToken();
 
-    return std::make_unique<obelisk::PrototypeAST>(functionName,
+    return std::make_unique<obelisk::PrototypeAST>(functionName, std::move(argNames));
-        std::move(argNames));
 }
 
 std::unique_ptr<obelisk::FunctionAST> obelisk::Parser::parseDefinition()
@@ -196,8 +190,7 @@ std::unique_ptr<obelisk::FunctionAST> obelisk::Parser::parseDefinition()
 
     if (auto expression = parseExpression())
     {
-        return std::make_unique<FunctionAST>(std::move(prototype),
+        return std::make_unique<FunctionAST>(std::move(prototype), std::move(expression));
-            std::move(expression));
     }
 
     return nullptr;
@@ -208,10 +201,8 @@ std::unique_ptr<obelisk::FunctionAST> obelisk::Parser::parseTopLevelExpression()
     if (auto expression = parseExpression())
     {
         // Make an anonymous prototype
-        auto prototype = std::make_unique<obelisk::PrototypeAST>("__anon_expr",
+        auto prototype = std::make_unique<obelisk::PrototypeAST>("__anon_expr", std::vector<std::string>());
-            std::vector<std::string>());
+        return std::make_unique<obelisk::FunctionAST>(std::move(prototype), std::move(expression));
-        return std::make_unique<obelisk::FunctionAST>(std::move(prototype),
-            std::move(expression));
     }
     return nullptr;
 }
@@ -241,8 +232,7 @@ void obelisk::Parser::parseFact(std::vector<obelisk::Fact>& facts)
     getNextToken();
     if (getCurrentToken() != '(')
     {
-        throw obelisk::ParserException(
+        throw obelisk::ParserException("expected '(' but got '" + std::to_string(getCurrentToken()) + "'");
-            "expected '(' but got '" + std::to_string(getCurrentToken()) + "'");
     }
 
     syntax.push('(');
@@ -308,14 +298,12 @@ void obelisk::Parser::parseFact(std::vector<obelisk::Fact>& facts)
 
                 if (leftEntities.size() == 0)
                 {
-                    throw obelisk::ParserException(
+                    throw obelisk::ParserException("missing left side entities");
-                        "missing left side entities");
                 }
 
                 if (rightEntities.size() == 0)
                 {
-                    throw obelisk::ParserException(
+                    throw obelisk::ParserException("missing right side entities");
-                        "missing right side entities");
                 }
                 break;
             }
@@ -346,9 +334,8 @@ void obelisk::Parser::parseFact(std::vector<obelisk::Fact>& facts)
     {
         for (auto& rightEntity : rightEntities)
         {
-            facts.push_back(obelisk::Fact(obelisk::Entity(leftEntity),
+            facts.push_back(
-                obelisk::Entity(rightEntity),
+                obelisk::Fact(obelisk::Entity(leftEntity), obelisk::Entity(rightEntity), obelisk::Verb(verb)));
-                obelisk::Verb(verb)));
         }
     }
 }
@@ -380,8 +367,7 @@ void obelisk::Parser::handleFact(std::unique_ptr<obelisk::KnowledgeBase>& kb)
             kb->getEntity(entity);
             if (entity.getId() == 0)
             {
-                throw obelisk::ParserException(
+                throw obelisk::ParserException("left entity could not be inserted into the database");
-                    "left entity could not be inserted into the database");
             }
             else
             {
@@ -399,8 +385,7 @@ void obelisk::Parser::handleFact(std::unique_ptr<obelisk::KnowledgeBase>& kb)
             kb->getEntity(entity);
             if (entity.getId() == 0)
             {
-                throw obelisk::ParserException(
+                throw obelisk::ParserException("right entity could not be inserted into the database");
-                    "right entity could not be inserted into the database");
             }
             else
             {
@@ -423,8 +408,7 @@ void obelisk::Parser::handleFact(std::unique_ptr<obelisk::KnowledgeBase>& kb)
                 kb->getVerb(verb);
                 if (verb.getId() == 0)
                 {
-                    throw obelisk::ParserException(
+                    throw obelisk::ParserException("verb could not be inserted into the database");
-                        "verb could not be inserted into the database");
                 }
                 else
                 {
@@ -447,8 +431,7 @@ void obelisk::Parser::handleFact(std::unique_ptr<obelisk::KnowledgeBase>& kb)
             kb->getFact(fact);
             if (fact.getId() == 0)
             {
-                throw obelisk::ParserException(
+                throw obelisk::ParserException("fact could not be inserted into the database");
-                    "fact could not be inserted into the database");
             }
         }
     }

src/parser.h

@@ -21,13 +21,11 @@ namespace obelisk
             void setCurrentToken(int currentToken);
 
             std::unique_ptr<obelisk::ExpressionAST> logError(const char* str);
-            std::unique_ptr<obelisk::PrototypeAST> logErrorPrototype(
+            std::unique_ptr<obelisk::PrototypeAST> logErrorPrototype(const char* str);
-                const char* str);
 
             std::unique_ptr<obelisk::ExpressionAST> parseExpression();
             std::unique_ptr<obelisk::ExpressionAST> parseNumberExpression();
-            std::unique_ptr<obelisk::ExpressionAST>
+            std::unique_ptr<obelisk::ExpressionAST> parseParenthesisExpression();
-                parseParenthesisExpression();
             std::unique_ptr<obelisk::ExpressionAST> parseIdentifierExpression();
             std::unique_ptr<obelisk::ExpressionAST> parsePrimary();
             std::unique_ptr<obelisk::PrototypeAST> parsePrototype();