implemented infix operator parsing

2025-07-11 10:30:37 +02:00
parent 6e471a91d5
commit a7f5950a55
7 changed files with 155 additions and 6 deletions
--- a/test/parser/precedence.cpp
+++ b/test/parser/precedence.cpp
@@ -0,0 +1,51 @@
+#include "parser/parser.hpp"
+
+#include <doctest.h>
+
+TEST_SUITE("Precedence") {
+    TEST_CASE("Raw precedence") {
+        CHECK(parser::precedence::LOWEST < parser::precedence::EQUALS);
+        CHECK(parser::precedence::LOWEST < parser::precedence::LESS_GREATER);
+        CHECK(parser::precedence::LOWEST < parser::precedence::SUM);
+        CHECK(parser::precedence::LOWEST < parser::precedence::PRODUCT);
+        CHECK(parser::precedence::LOWEST < parser::precedence::PREFIX);
+        CHECK(parser::precedence::LOWEST < parser::precedence::CALL);
+
+        CHECK(parser::precedence::EQUALS < parser::precedence::LESS_GREATER);
+        CHECK(parser::precedence::EQUALS < parser::precedence::SUM);
+        CHECK(parser::precedence::EQUALS < parser::precedence::PRODUCT);
+        CHECK(parser::precedence::EQUALS < parser::precedence::PREFIX);
+        CHECK(parser::precedence::EQUALS < parser::precedence::CALL);
+
+        CHECK(parser::precedence::LESS_GREATER < parser::precedence::SUM);
+        CHECK(parser::precedence::LESS_GREATER < parser::precedence::PRODUCT);
+        CHECK(parser::precedence::LESS_GREATER < parser::precedence::PREFIX);
+        CHECK(parser::precedence::LESS_GREATER < parser::precedence::CALL);
+
+        CHECK(parser::precedence::SUM < parser::precedence::PRODUCT);
+        CHECK(parser::precedence::SUM < parser::precedence::PREFIX);
+        CHECK(parser::precedence::SUM < parser::precedence::CALL);
+
+        CHECK(parser::precedence::PRODUCT < parser::precedence::PREFIX);
+        CHECK(parser::precedence::PRODUCT < parser::precedence::CALL);
+
+        CHECK(parser::precedence::PREFIX < parser::precedence::CALL);
+    }
+
+    TEST_CASE("Operator precedence") {
+        auto& prec = parser::precedence_for;
+        CHECK(prec(token::type::EQ) == prec(token::type::NEQ));
+        CHECK(prec(token::type::LT) == prec(token::type::GT));
+        CHECK(prec(token::type::PLUS) == prec(token::type::MINUS));
+        CHECK(prec(token::type::ASTERISK) == prec(token::type::SLASH));
+
+        CHECK(prec(token::type::EQ) < prec(token::type::LT));
+        CHECK(prec(token::type::EQ) < prec(token::type::PLUS));
+        CHECK(prec(token::type::EQ) < prec(token::type::ASTERISK));
+
+        CHECK(prec(token::type::LT) < prec(token::type::PLUS));
+        CHECK(prec(token::type::LT) < prec(token::type::ASTERISK));
+
+        CHECK(prec(token::type::PLUS) < prec(token::type::ASTERISK));
+    }
+}