Implement new magic frontend using sexpr

1 files changed, 89 insertions, 0 deletions

diff --git a/src/sexpr/parser_test.cpp b/src/sexpr/parser_test.cpp
new file mode 100644
index 0000000..a752313
--- /dev/null
+++ b/src/sexpr/parser_test.cpp
@@ -0,0 +1,89 @@
+#include "parser.hpp"
+
+#include <gtest/gtest.h>
+
+static
+io::FD string_pipe(ZString sz)
+{
+    io::FD rfd, wfd;
+    if (-1 == io::FD::pipe(rfd, wfd))
+        return io::FD();
+    if (sz.size() != wfd.write(sz.c_str(), sz.size()))
+    {
+        rfd.close();
+        wfd.close();
+        return io::FD();
+    }
+    wfd.close();
+    return rfd;
+}
+
+TEST(sexpr, parser)
+{
+    sexpr::SExpr s;
+    io::LineSpan span;
+    sexpr::Lexer lexer("<parser-test1>", string_pipe(" foo( ) 123\"\" \n"));
+
+    EXPECT_TRUE(sexpr::parse(lexer, s));
+    EXPECT_EQ(s._type, sexpr::TOKEN);
+    EXPECT_EQ(s._str, "foo");
+
+    EXPECT_TRUE(sexpr::parse(lexer, s));
+    EXPECT_EQ(s._type, sexpr::LIST);
+    EXPECT_EQ(s._list, std::vector<sexpr::SExpr>());
+
+    EXPECT_TRUE(sexpr::parse(lexer, s));
+    EXPECT_EQ(s._type, sexpr::INT);
+    EXPECT_EQ(s._int, 123);
+
+    EXPECT_TRUE(sexpr::parse(lexer, s));
+    EXPECT_EQ(s._type, sexpr::STRING);
+    EXPECT_EQ(s._str, "");
+
+    EXPECT_FALSE(sexpr::parse(lexer, s));
+    EXPECT_EQ(lexer.peek(), sexpr::TOK_EOF);
+}
+
+TEST(sexpr, parselist)
+{
+    sexpr::SExpr s;
+    sexpr::Lexer lexer("<parser-test1>", string_pipe("(foo)(bar)\n"));
+
+    EXPECT_TRUE(sexpr::parse(lexer, s));
+    EXPECT_EQ(s._type, sexpr::LIST);
+    EXPECT_EQ(s._list.size(), 1);
+    EXPECT_EQ(s._list[0]._type, sexpr::TOKEN);
+    EXPECT_EQ(s._list[0]._str, "foo");
+
+    EXPECT_TRUE(sexpr::parse(lexer, s));
+    EXPECT_EQ(s._type, sexpr::LIST);
+    EXPECT_EQ(s._list.size(), 1);
+    EXPECT_EQ(s._list[0]._type, sexpr::TOKEN);
+    EXPECT_EQ(s._list[0]._str, "bar");
+
+    EXPECT_FALSE(sexpr::parse(lexer, s));
+    EXPECT_EQ(lexer.peek(), sexpr::TOK_EOF);
+}
+
+TEST(sexpr, parsebad)
+{
+    for (ZString bad : {
+            ZString("(\n"),
+            ZString(")\n"),
+            ZString("\"\n"),
+            ZString("'\n"),
+            ZString("\\\n"),
+            ZString("\"\\"),
+            ZString("\"\\z\""),
+            ZString("(()\n"),
+            ZString("((\n"),
+            ZString("((\"\n"),
+    })
+    {
+        sexpr::SExpr s;
+        io::LineSpan span;
+        sexpr::Lexer lexer("<parse-bad>", string_pipe(bad));
+        EXPECT_FALSE(sexpr::parse(lexer, s));
+        EXPECT_EQ(lexer.peek(), sexpr::TOK_ERROR);
+    }
+}