From 9e4a90f53ed4260ee8b27c326f0c7e11036e733f Mon Sep 17 00:00:00 2001
From: crupest <crupest@outlook.com>
Date: Fri, 10 Sep 2021 21:56:51 +0800
Subject: ...

---
 src/parse/Grammar.cpp | 38 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)

(limited to 'src/parse/Grammar.cpp')

diff --git a/src/parse/Grammar.cpp b/src/parse/Grammar.cpp
index e69de29b..8d929212 100644
--- a/src/parse/Grammar.cpp
+++ b/src/parse/Grammar.cpp
@@ -0,0 +1,38 @@
+#include "cru/parse/Grammar.hpp"
+#include "cru/parse/Symbol.hpp"
+
+#include <algorithm>
+
+namespace cru::parse {
+Grammar::Grammar() {}
+
+Grammar::~Grammar() {}
+
+Terminal* Grammar::CreateTerminal(String name) {
+  auto terminal = new Terminal(this, std::move(name));
+  terminals_.push_back(terminal);
+  symbols_.push_back(terminal);
+  return terminal;
+}
+
+Nonterminal* Grammar::CreateNonterminal(String name) {
+  auto nonterminal = new Nonterminal(this, std::move(name));
+  nonterminals_.push_back(nonterminal);
+  symbols_.push_back(nonterminal);
+  return nonterminal;
+}
+
+Production* Grammar::CreateProduction(String name, Nonterminal* left,
+                                      std::vector<Symbol*> right) {
+  Expects(left->GetGrammar() == this);
+  Expects(std::all_of(right.cbegin(), right.cend(), [this](Symbol* symbol) {
+    return symbol->GetGrammar() == this;
+  }));
+
+  auto production =
+      new Production(this, std::move(name), left, std::move(right));
+  productions_.push_back(production);
+  return production;
+}
+
+}  // namespace cru::parse
-- 
cgit v1.2.3