From a90fdb63e8adb09dafcc050344c443d3b73838bc Mon Sep 17 00:00:00 2001
From: David Li <li.davidm96@gmail.com>
Date: Mon, 6 Nov 2017 21:12:56 -0500
Subject: Parse and typecheck function calls

---
 src/taiga.lalrpop | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

(limited to 'src/taiga.lalrpop')

diff --git a/src/taiga.lalrpop b/src/taiga.lalrpop
index 40830c6..9aa2f38 100644
--- a/src/taiga.lalrpop
+++ b/src/taiga.lalrpop
@@ -136,10 +136,27 @@ ExpressionSign: Box<ast::WithLocation<ast::Expression>> = {
     <ExpressionBase> => <>,
 };
 
+CallArgsList: Vec<WithLocation<ast::Expression>> = {
+    <exp: Expression> "," <rest: CallArgsList> => {
+        let mut rest = rest;
+        rest.push(*exp);
+        rest
+    },
+    <exp: Expression> "," => vec![*exp],
+    <exp: Expression> => vec![*exp],
+};
+
+CallArgs: Vec<WithLocation<ast::Expression>> = {
+    "(" <v: CallArgsList> ")" => v,
+    "(" ")" => vec![],
+};
+
 ExpressionBase: Box<ast::WithLocation<ast::Expression>> = {
     Num => Box::new(<>.map(|v| ast::Expression::Number(v))),
     String => Box::new(<>.map(|v| ast::Expression::String(v))),
     Name => Box::new(<>.map(|v| ast::Expression::Name(v))),
+    <l: @L> <func: Name> <args: CallArgs> <r: @R> =>
+        Box::new(WithLocation::new(ast::Expression::Call(func.value, args), l, r)),
     Spanned<r"nil"> => Box::new(<>.map(|v| ast::Expression::Nil)),
     <l: @L> "let" <d: DeclarationsList> "in" <e: Expression> "end" <r: @R> =>
         Box::new(WithLocation::new(ast::Expression::Let(d, e), l, r)),
-- 
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