From 367bade807fe3505a58da0ebb54c7e684e0ff56e Mon Sep 17 00:00:00 2001
From: trivernis <trivernis@protonmail.com>
Date: Tue, 4 Aug 2020 17:50:30 +0200
Subject: [PATCH] Add ToMathML trait and implementation for greek letters

---
 src/format/mathml.rs | 50 ++++++++++++++++++++++++++++++++++++++++++++
 src/format/mod.rs    |  1 +
 src/lib.rs           |  1 +
 3 files changed, 52 insertions(+)
 create mode 100644 src/format/mathml.rs
 create mode 100644 src/format/mod.rs

diff --git a/src/format/mathml.rs b/src/format/mathml.rs
new file mode 100644
index 0000000..9051e4c
--- /dev/null
+++ b/src/format/mathml.rs
@@ -0,0 +1,50 @@
+use crate::tokens::Greek;
+
+pub trait ToMathML {
+    fn to_mathml(&self) -> String;
+}
+
+impl ToMathML for Greek {
+    fn to_mathml(&self) -> String {
+        let inner = match self {
+            Greek::Alpha => "&alpha;",
+            Greek::Beta => "&beta;",
+            Greek::Gamma => "&gamma;",
+            Greek::BigGamma => "&Gamma;",
+            Greek::Delta => "&delta;",
+            Greek::BigDelta => "&Delta;",
+            Greek::Epsilon => "&epsilon;",
+            Greek::VarEpsilon => "&epsilon;",
+            Greek::Zeta => "&zeta;",
+            Greek::Eta => "&eta;",
+            Greek::Theta => "&theta;",
+            Greek::BigTheta => "&Theta;",
+            Greek::VarTheta => "&theta;",
+            Greek::Iota => "&iota;",
+            Greek::Kappa => "&kappa;",
+            Greek::Lambda => "&lambda;",
+            Greek::BigLambda => "&Lambda;",
+            Greek::Mu => "&mu;",
+            Greek::Nu => "&nu;",
+            Greek::Xi => "&xi;",
+            Greek::BigXi => "&Xi;",
+            Greek::Pi => "&pi;",
+            Greek::BigPi => "&Pi;",
+            Greek::Rho => "&rho;",
+            Greek::Sigma => "&sigma;",
+            Greek::BigSigma => "&Sigma;",
+            Greek::Tau => "&tau;",
+            Greek::Upsilon => "&upsilon;",
+            Greek::Phi => "&phi;",
+            Greek::BigPhi => "&Phi;",
+            Greek::VarPhi => "&phi;",
+            Greek::Chi => "&chi;",
+            Greek::Psi => "&psi;",
+            Greek::BigPsi => "&Psi;",
+            Greek::Omega => "&omega;",
+            Greek::BigOmega => "&Omega;",
+        };
+
+        format!("<mi>{}</mi>", inner)
+    }
+}
diff --git a/src/format/mod.rs b/src/format/mod.rs
new file mode 100644
index 0000000..6b8555d
--- /dev/null
+++ b/src/format/mod.rs
@@ -0,0 +1 @@
+pub mod mathml;
diff --git a/src/lib.rs b/src/lib.rs
index 6481938..472c9c0 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -12,6 +12,7 @@ use crate::parsing::tokenizer::Tokenizer;
 use crate::parsing::tree_parser::TreeParser;
 
 pub mod elements;
+pub mod format;
 pub mod parsing;
 pub mod tokens;
 pub(crate) mod utils;