mirror of
https://github.com/yhirose/cpp-peglib.git
synced 2024-12-22 20:05:31 +00:00
1030 lines
25 KiB
C++
1030 lines
25 KiB
C++
#include <gtest/gtest.h>
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#include <peglib.h>
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using namespace peg;
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#if !defined(PEGLIB_NO_UNICODE_CHARS)
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TEST(GeneralTest, Simple_syntax_test_with_unicode) {
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parser parser(u8" ROOT ← _ "
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" _ <- ' ' ");
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bool ret = parser;
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EXPECT_TRUE(ret);
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}
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#endif
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TEST(GeneralTest, Simple_syntax_test) {
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parser parser(R"(
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ROOT <- _
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_ <- ' '
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)");
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bool ret = parser;
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EXPECT_TRUE(ret);
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}
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TEST(GeneralTest, Empty_syntax_test) {
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parser parser("");
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bool ret = parser;
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EXPECT_FALSE(ret);
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}
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TEST(GeneralTest, Start_rule_with_ignore_operator_test) {
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parser parser(R"(
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~ROOT <- _
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_ <- ' '
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)");
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bool ret = parser;
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EXPECT_FALSE(ret);
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}
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TEST(GeneralTest, Invalid_UTF8_text_test) {
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std::string s = "a <- '";
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s += static_cast<char>(0xe8); // Make invalid utf8 text...
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parser parser(s.data());
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bool ret = parser;
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EXPECT_FALSE(ret);
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}
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TEST(GeneralTest, Backslash_escape_sequence_test) {
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parser parser(R"(
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ROOT <- _
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_ <- '\\'
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)");
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bool ret = parser;
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EXPECT_TRUE(ret);
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}
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TEST(GeneralTest, Invalid_escape_sequence_test) {
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parser parser(R"(
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ROOT <- _
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_ <- '\'
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)");
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bool ret = parser;
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EXPECT_FALSE(ret);
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}
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TEST(GeneralTest, Action_taking_non_const_Semantic_Values_parameter) {
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parser parser(R"(
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ROOT <- TEXT
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TEXT <- [a-zA-Z]+
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)");
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parser["ROOT"] = [&](SemanticValues &vs) {
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auto s = std::string(std::any_cast<std::string_view>(vs[0]));
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s[0] = 'H'; // mutate
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return s; // move
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};
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parser["TEXT"] = [&](SemanticValues &vs) { return vs.token(); };
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std::string val;
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auto ret = parser.parse("hello", val);
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EXPECT_TRUE(ret);
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EXPECT_EQ("Hello", val);
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}
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TEST(GeneralTest, String_capture_test) {
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parser parser(R"(
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ROOT <- _ ('[' TAG_NAME ']' _)*
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TAG_NAME <- (!']' .)+
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_ <- [ \t]*
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)");
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std::vector<std::string_view> tags;
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parser["TAG_NAME"] = [&](const SemanticValues &vs) {
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tags.push_back(vs.sv());
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};
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auto ret = parser.parse(" [tag1] [tag:2] [tag-3] ");
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EXPECT_TRUE(ret);
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EXPECT_EQ(3, tags.size());
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EXPECT_EQ("tag1", tags[0]);
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EXPECT_EQ("tag:2", tags[1]);
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EXPECT_EQ("tag-3", tags[2]);
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}
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using namespace peg;
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TEST(GeneralTest, String_capture_test2) {
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std::vector<std::string_view> tags;
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Definition ROOT, TAG, TAG_NAME, WS;
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ROOT <= seq(WS, zom(TAG));
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TAG <= seq(chr('['), TAG_NAME, chr(']'), WS);
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TAG_NAME <= oom(seq(npd(chr(']')), dot())),
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[&](const SemanticValues &vs) { tags.push_back(vs.sv()); };
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WS <= zom(cls(" \t"));
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auto r = ROOT.parse(" [tag1] [tag:2] [tag-3] ");
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EXPECT_TRUE(r.ret);
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EXPECT_EQ(3, tags.size());
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EXPECT_EQ("tag1", tags[0]);
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EXPECT_EQ("tag:2", tags[1]);
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EXPECT_EQ("tag-3", tags[2]);
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}
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TEST(GeneralTest, String_capture_test3) {
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parser pg(R"(
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ROOT <- _ TOKEN*
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TOKEN <- '[' < (!']' .)+ > ']' _
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_ <- [ \t\r\n]*
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)");
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std::vector<std::string_view> tags;
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pg["TOKEN"] = [&](const SemanticValues &vs) { tags.push_back(vs.token()); };
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auto ret = pg.parse(" [tag1] [tag:2] [tag-3] ");
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EXPECT_TRUE(ret);
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EXPECT_EQ(3, tags.size());
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EXPECT_EQ("tag1", tags[0]);
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EXPECT_EQ("tag:2", tags[1]);
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EXPECT_EQ("tag-3", tags[2]);
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}
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TEST(GeneralTest, Cyclic_grammer_test) {
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Definition PARENT;
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Definition CHILD;
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PARENT <= seq(CHILD);
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CHILD <= seq(PARENT);
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}
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TEST(GeneralTest, Visit_test) {
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Definition ROOT, TAG, TAG_NAME, WS;
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ROOT <= seq(WS, zom(TAG));
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TAG <= seq(chr('['), TAG_NAME, chr(']'), WS);
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TAG_NAME <= oom(seq(npd(chr(']')), dot()));
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WS <= zom(cls(" \t"));
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AssignIDToDefinition defIds;
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ROOT.accept(defIds);
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EXPECT_EQ(4, defIds.ids.size());
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}
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TEST(GeneralTest, Token_check_test) {
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parser parser(R"(
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EXPRESSION <- _ TERM (TERM_OPERATOR TERM)*
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TERM <- FACTOR (FACTOR_OPERATOR FACTOR)*
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FACTOR <- NUMBER / '(' _ EXPRESSION ')' _
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TERM_OPERATOR <- < [-+] > _
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FACTOR_OPERATOR <- < [/*] > _
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NUMBER <- < [0-9]+ > _
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_ <- [ \t\r\n]*
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)");
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EXPECT_FALSE(parser["EXPRESSION"].is_token());
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EXPECT_FALSE(parser["FACTOR"].is_token());
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EXPECT_TRUE(parser["FACTOR_OPERATOR"].is_token());
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EXPECT_TRUE(parser["NUMBER"].is_token());
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EXPECT_TRUE(parser["_"].is_token());
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}
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TEST(GeneralTest, Lambda_action_test) {
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parser parser(R"(
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START <- (CHAR)*
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CHAR <- .
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)");
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std::string ss;
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parser["CHAR"] = [&](const SemanticValues &vs) { ss += *vs.sv().data(); };
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bool ret = parser.parse("hello");
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EXPECT_TRUE(ret);
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EXPECT_EQ("hello", ss);
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}
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TEST(GeneralTest, enter_leave_handlers_test) {
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parser parser(R"(
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START <- LTOKEN '=' RTOKEN
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LTOKEN <- TOKEN
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RTOKEN <- TOKEN
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TOKEN <- [A-Za-z]+
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)");
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parser["LTOKEN"].enter = [&](const char *, size_t, std::any &dt) {
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auto &require_upper_case = *std::any_cast<bool *>(dt);
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require_upper_case = false;
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};
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parser["LTOKEN"].leave = [&](const char *, size_t, size_t, std::any &,
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std::any &dt) {
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auto &require_upper_case = *std::any_cast<bool *>(dt);
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require_upper_case = true;
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};
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auto message = "should be upper case string...";
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parser["TOKEN"].predicate = [&](const SemanticValues &vs, const std::any &dt,
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std::string &msg) {
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auto &require_upper_case = *std::any_cast<bool *>(dt);
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if (require_upper_case) {
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const auto &s = vs.sv();
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if (!std::all_of(s.begin(), s.end(), ::isupper)) {
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msg = message;
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return false;
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}
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}
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return true;
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};
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bool require_upper_case = false;
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std::any dt = &require_upper_case;
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EXPECT_FALSE(parser.parse("hello=world", dt));
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EXPECT_FALSE(parser.parse("HELLO=world", dt));
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EXPECT_TRUE(parser.parse("hello=WORLD", dt));
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EXPECT_TRUE(parser.parse("HELLO=WORLD", dt));
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parser.log = [&](size_t ln, size_t col, const std::string &msg) {
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EXPECT_EQ(1, ln);
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EXPECT_EQ(7, col);
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EXPECT_EQ(message, msg);
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};
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parser.parse("hello=world", dt);
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}
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TEST(GeneralTest, WHITESPACE_test) {
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parser parser(R"(
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# Rules
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ROOT <- ITEM (',' ITEM)*
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ITEM <- WORD / PHRASE
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# Tokens
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WORD <- < [a-zA-Z0-9_]+ >
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PHRASE <- < '"' (!'"' .)* '"' >
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%whitespace <- [ \t\r\n]*
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)");
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auto ret = parser.parse(R"( one, "two, three", four )");
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EXPECT_TRUE(ret);
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}
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TEST(GeneralTest, WHITESPACE_test2) {
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parser parser(R"(
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# Rules
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ROOT <- ITEM (',' ITEM)*
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ITEM <- '[' < [a-zA-Z0-9_]+ > ']'
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%whitespace <- (SPACE / TAB)*
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SPACE <- ' '
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TAB <- '\t'
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)");
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std::vector<std::string_view> items;
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parser["ITEM"] = [&](const SemanticValues &vs) {
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items.push_back(vs.token());
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};
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auto ret = parser.parse(R"([one], [two] ,[three] )");
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EXPECT_TRUE(ret);
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EXPECT_EQ(3, items.size());
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EXPECT_EQ("one", items[0]);
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EXPECT_EQ("two", items[1]);
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EXPECT_EQ("three", items[2]);
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}
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TEST(GeneralTest, WHITESPACE_test3) {
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parser parser(R"(
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StrQuot <- < '"' < (StrEscape / StrChars)* > '"' >
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StrEscape <- '\\' any
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StrChars <- (!'"' !'\\' any)+
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any <- .
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%whitespace <- [ \t]*
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)");
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parser["StrQuot"] = [](const SemanticValues &vs) {
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EXPECT_EQ(R"( aaa \" bbb )", vs.token());
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};
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auto ret = parser.parse(R"( " aaa \" bbb " )");
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EXPECT_TRUE(ret);
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}
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TEST(GeneralTest, WHITESPACE_test4) {
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parser parser(R"(
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ROOT <- HELLO OPE WORLD
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HELLO <- 'hello'
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OPE <- < [-+] >
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WORLD <- 'world' / 'WORLD'
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%whitespace <- [ \t\r\n]*
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)");
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parser["HELLO"] = [](const SemanticValues &vs) {
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EXPECT_EQ("hello", vs.token());
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};
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parser["OPE"] = [](const SemanticValues &vs) { EXPECT_EQ("+", vs.token()); };
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parser["WORLD"] = [](const SemanticValues &vs) {
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EXPECT_EQ("world", vs.token());
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};
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auto ret = parser.parse(" hello + world ");
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EXPECT_TRUE(ret);
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}
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TEST(GeneralTest, Word_expression_test) {
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parser parser(R"(
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ROOT <- 'hello' ','? 'world'
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%whitespace <- [ \t\r\n]*
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%word <- [a-z]+
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)");
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EXPECT_FALSE(parser.parse("helloworld"));
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EXPECT_TRUE(parser.parse("hello world"));
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EXPECT_TRUE(parser.parse("hello,world"));
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EXPECT_TRUE(parser.parse("hello, world"));
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EXPECT_TRUE(parser.parse("hello , world"));
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}
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TEST(GeneralTest, Skip_token_test) {
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parser parser(" ROOT <- _ ITEM (',' _ ITEM _)* "
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" ITEM <- ([a-z0-9])+ "
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" ~_ <- [ \t]* ");
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parser["ROOT"] = [&](const SemanticValues &vs) { EXPECT_EQ(2, vs.size()); };
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auto ret = parser.parse(" item1, item2 ");
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EXPECT_TRUE(ret);
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}
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TEST(GeneralTest, Skip_token_test2) {
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parser parser(R"(
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ROOT <- ITEM (',' ITEM)*
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ITEM <- < ([a-z0-9])+ >
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%whitespace <- [ \t]*
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)");
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parser["ROOT"] = [&](const SemanticValues &vs) { EXPECT_EQ(2, vs.size()); };
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auto ret = parser.parse(" item1, item2 ");
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EXPECT_TRUE(ret);
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}
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TEST(GeneralTest, Custom_AST_test) {
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struct CustomType {};
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using CustomAst = AstBase<CustomType>;
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parser parser(R"(
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ROOT <- _ TEXT*
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TEXT <- [a-zA-Z]+ _
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_ <- [ \t\r\n]*
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)");
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parser.enable_ast<CustomAst>();
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std::shared_ptr<CustomAst> ast;
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bool ret = parser.parse("a b c", ast);
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EXPECT_TRUE(ret);
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EXPECT_EQ(4, ast->nodes.size());
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}
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TEST(GeneralTest, Backtracking_test) {
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parser parser(R"(
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START <- PAT1 / PAT2
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PAT1 <- HELLO ' One'
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PAT2 <- HELLO ' Two'
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HELLO <- 'Hello'
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)");
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size_t count = 0;
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parser["HELLO"] = [&](const SemanticValues & /*vs*/) { count++; };
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parser.enable_packrat_parsing();
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bool ret = parser.parse("Hello Two");
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EXPECT_TRUE(ret);
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EXPECT_EQ(1, count); // Skip second time
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}
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TEST(GeneralTest, Backtracking_with_AST) {
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parser parser(R"(
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S <- A? B (A B)* A
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A <- 'a'
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B <- 'b'
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)");
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parser.enable_ast();
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std::shared_ptr<Ast> ast;
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bool ret = parser.parse("ba", ast);
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EXPECT_TRUE(ret);
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EXPECT_EQ(2, ast->nodes.size());
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}
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TEST(GeneralTest, Octal_Hex_Unicode_value_test) {
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parser parser(R"( ROOT <- '\132\x7a\u30f3' )");
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auto ret = parser.parse("Zzン");
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EXPECT_TRUE(ret);
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}
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TEST(GeneralTest, Ignore_case_literal_test) {
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parser parser(R"(
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ROOT <- HELLO WORLD
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HELLO <- 'hello'i
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WORLD <- 'world'i
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%whitespace <- [ \t\r\n]*
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)");
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parser["HELLO"] = [](const SemanticValues &vs) {
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EXPECT_EQ("Hello", vs.token());
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};
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parser["WORLD"] = [](const SemanticValues &vs) {
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EXPECT_EQ("World", vs.token());
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};
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auto ret = parser.parse(" Hello World ");
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EXPECT_TRUE(ret);
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}
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TEST(GeneralTest, Ignore_case_character_class_test) {
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parser parser(R"(ROOT <- [a-z]i+)");
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EXPECT_TRUE(parser.parse("abc"));
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EXPECT_TRUE(parser.parse("ABC"));
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EXPECT_TRUE(parser.parse("Abc"));
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EXPECT_TRUE(parser.parse("Abc"));
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EXPECT_FALSE(parser.parse("123"));
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}
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TEST(GeneralTest, Ignore_case_negate_character_class_test) {
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parser parser(R"(ROOT <- [^a-z]i+)");
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EXPECT_TRUE(parser.parse("123"));
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EXPECT_FALSE(parser.parse("ABC"));
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}
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TEST(GeneralTest, mutable_lambda_test) {
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std::vector<std::string_view> vec;
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parser pg("ROOT <- 'mutable lambda test'");
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// This test makes sure if the following code can be compiled.
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pg["TOKEN"] = [=](const SemanticValues &vs) mutable {
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vec.push_back(vs.sv());
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};
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}
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TEST(GeneralTest, Simple_calculator_test) {
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parser parser(R"(
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Additive <- Multitive '+' Additive / Multitive
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Multitive <- Primary '*' Multitive / Primary
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Primary <- '(' Additive ')' / Number
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Number <- [0-9]+
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)");
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parser["Additive"] = [](const SemanticValues &vs) {
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switch (vs.choice()) {
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case 0: return std::any_cast<int>(vs[0]) + std::any_cast<int>(vs[1]);
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default: return std::any_cast<int>(vs[0]);
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}
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};
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parser["Multitive"] = [](const SemanticValues &vs) {
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switch (vs.choice()) {
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case 0: return std::any_cast<int>(vs[0]) * std::any_cast<int>(vs[1]);
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default: return std::any_cast<int>(vs[0]);
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}
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};
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parser["Number"] = [](const SemanticValues &vs) {
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return vs.token_to_number<int>();
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};
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int val;
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parser.parse("(1+2)*3", val);
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EXPECT_EQ(9, val);
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}
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TEST(GeneralTest, Calculator_test) {
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// Construct grammer
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Definition EXPRESSION, TERM, FACTOR, TERM_OPERATOR, FACTOR_OPERATOR, NUMBER;
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EXPRESSION <= seq(TERM, zom(seq(TERM_OPERATOR, TERM)));
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TERM <= seq(FACTOR, zom(seq(FACTOR_OPERATOR, FACTOR)));
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FACTOR <= cho(NUMBER, seq(chr('('), EXPRESSION, chr(')')));
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TERM_OPERATOR <= cls("+-");
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FACTOR_OPERATOR <= cls("*/");
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NUMBER <= oom(cls("0-9"));
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// Setup actions
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auto reduce = [](const SemanticValues &vs) -> long {
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long ret = std::any_cast<long>(vs[0]);
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for (auto i = 1u; i < vs.size(); i += 2) {
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auto num = std::any_cast<long>(vs[i + 1]);
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switch (std::any_cast<char>(vs[i])) {
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case '+': ret += num; break;
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case '-': ret -= num; break;
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case '*': ret *= num; break;
|
|
case '/': ret /= num; break;
|
|
}
|
|
}
|
|
return ret;
|
|
};
|
|
|
|
EXPRESSION = reduce;
|
|
TERM = reduce;
|
|
TERM_OPERATOR = [](const SemanticValues &vs) { return *vs.sv().data(); };
|
|
FACTOR_OPERATOR = [](const SemanticValues &vs) { return *vs.sv().data(); };
|
|
NUMBER = [](const SemanticValues &vs) { return vs.token_to_number<long>(); };
|
|
|
|
// Parse
|
|
long val;
|
|
auto r = EXPRESSION.parse_and_get_value("1+2*3*(4-5+6)/7-8", val);
|
|
|
|
EXPECT_TRUE(r.ret);
|
|
EXPECT_EQ(-3, val);
|
|
}
|
|
|
|
TEST(GeneralTest, Calculator_test2) {
|
|
// Parse syntax
|
|
auto syntax = R"(
|
|
# Grammar for Calculator...
|
|
EXPRESSION <- TERM (TERM_OPERATOR TERM)*
|
|
TERM <- FACTOR (FACTOR_OPERATOR FACTOR)*
|
|
FACTOR <- NUMBER / '(' EXPRESSION ')'
|
|
TERM_OPERATOR <- [-+]
|
|
FACTOR_OPERATOR <- [/*]
|
|
NUMBER <- [0-9]+
|
|
)";
|
|
|
|
std::string start;
|
|
bool enablePackratParsing = false;
|
|
auto grammar = ParserGenerator::parse(syntax, strlen(syntax), start,
|
|
enablePackratParsing, nullptr);
|
|
auto &g = *grammar;
|
|
|
|
// Setup actions
|
|
auto reduce = [](const SemanticValues &vs) -> long {
|
|
long ret = std::any_cast<long>(vs[0]);
|
|
for (auto i = 1u; i < vs.size(); i += 2) {
|
|
auto num = std::any_cast<long>(vs[i + 1]);
|
|
switch (std::any_cast<char>(vs[i])) {
|
|
case '+': ret += num; break;
|
|
case '-': ret -= num; break;
|
|
case '*': ret *= num; break;
|
|
case '/': ret /= num; break;
|
|
}
|
|
}
|
|
return ret;
|
|
};
|
|
|
|
g["EXPRESSION"] = reduce;
|
|
g["TERM"] = reduce;
|
|
g["TERM_OPERATOR"] = [](const SemanticValues &vs) { return *vs.sv().data(); };
|
|
g["FACTOR_OPERATOR"] = [](const SemanticValues &vs) {
|
|
return *vs.sv().data();
|
|
};
|
|
g["NUMBER"] = [](const SemanticValues &vs) {
|
|
return vs.token_to_number<long>();
|
|
};
|
|
|
|
// Parse
|
|
long val;
|
|
auto r = g[start].parse_and_get_value("1+2*3*(4-5+6)/7-8", val);
|
|
|
|
EXPECT_TRUE(r.ret);
|
|
EXPECT_EQ(-3, val);
|
|
}
|
|
|
|
TEST(GeneralTest, Calculator_test3) {
|
|
// Parse syntax
|
|
parser parser(R"(
|
|
# Grammar for Calculator...
|
|
EXPRESSION <- TERM (TERM_OPERATOR TERM)*
|
|
TERM <- FACTOR (FACTOR_OPERATOR FACTOR)*
|
|
FACTOR <- NUMBER / '(' EXPRESSION ')'
|
|
TERM_OPERATOR <- [-+]
|
|
FACTOR_OPERATOR <- [/*]
|
|
NUMBER <- [0-9]+
|
|
)");
|
|
|
|
auto reduce = [](const SemanticValues &vs) -> long {
|
|
long ret = std::any_cast<long>(vs[0]);
|
|
for (auto i = 1u; i < vs.size(); i += 2) {
|
|
auto num = std::any_cast<long>(vs[i + 1]);
|
|
switch (std::any_cast<char>(vs[i])) {
|
|
case '+': ret += num; break;
|
|
case '-': ret -= num; break;
|
|
case '*': ret *= num; break;
|
|
case '/': ret /= num; break;
|
|
}
|
|
}
|
|
return ret;
|
|
};
|
|
|
|
// Setup actions
|
|
parser["EXPRESSION"] = reduce;
|
|
parser["TERM"] = reduce;
|
|
parser["TERM_OPERATOR"] = [](const SemanticValues &vs) {
|
|
return static_cast<char>(*vs.sv().data());
|
|
};
|
|
parser["FACTOR_OPERATOR"] = [](const SemanticValues &vs) {
|
|
return static_cast<char>(*vs.sv().data());
|
|
};
|
|
parser["NUMBER"] = [](const SemanticValues &vs) {
|
|
return vs.token_to_number<long>();
|
|
};
|
|
|
|
// Parse
|
|
long val;
|
|
auto ret = parser.parse("1+2*3*(4-5+6)/7-8", val);
|
|
|
|
EXPECT_TRUE(ret);
|
|
EXPECT_EQ(-3, val);
|
|
}
|
|
|
|
TEST(GeneralTest, Calculator_test_with_AST) {
|
|
parser parser(R"(
|
|
EXPRESSION <- _ TERM (TERM_OPERATOR TERM)*
|
|
TERM <- FACTOR (FACTOR_OPERATOR FACTOR)*
|
|
FACTOR <- NUMBER / '(' _ EXPRESSION ')' _
|
|
TERM_OPERATOR <- < [-+] > _
|
|
FACTOR_OPERATOR <- < [/*] > _
|
|
NUMBER <- < [0-9]+ > _
|
|
~_ <- [ \t\r\n]*
|
|
)");
|
|
|
|
parser.enable_ast();
|
|
|
|
std::function<long(const Ast &)> eval = [&](const Ast &ast) {
|
|
if (ast.name == "NUMBER") {
|
|
return ast.token_to_number<long>();
|
|
} else {
|
|
const auto &nodes = ast.nodes;
|
|
auto result = eval(*nodes[0]);
|
|
for (auto i = 1u; i < nodes.size(); i += 2) {
|
|
auto num = eval(*nodes[i + 1]);
|
|
auto ope = nodes[i]->token[0];
|
|
switch (ope) {
|
|
case '+': result += num; break;
|
|
case '-': result -= num; break;
|
|
case '*': result *= num; break;
|
|
case '/': result /= num; break;
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
};
|
|
|
|
std::shared_ptr<Ast> ast;
|
|
auto ret = parser.parse("1+2*3*(4-5+6)/7-8", ast);
|
|
ast = parser.optimize_ast(ast);
|
|
auto val = eval(*ast);
|
|
|
|
EXPECT_TRUE(ret);
|
|
EXPECT_EQ(-3, val);
|
|
}
|
|
|
|
TEST(GeneralTest, Calculator_test_with_combinators_and_AST) {
|
|
// Construct grammer
|
|
AST_DEFINITIONS(EXPRESSION, TERM, FACTOR, TERM_OPERATOR, FACTOR_OPERATOR,
|
|
NUMBER);
|
|
|
|
EXPRESSION <= seq(TERM, zom(seq(TERM_OPERATOR, TERM)));
|
|
TERM <= seq(FACTOR, zom(seq(FACTOR_OPERATOR, FACTOR)));
|
|
FACTOR <= cho(NUMBER, seq(chr('('), EXPRESSION, chr(')')));
|
|
TERM_OPERATOR <= cls("+-");
|
|
FACTOR_OPERATOR <= cls("*/");
|
|
NUMBER <= oom(cls("0-9"));
|
|
|
|
std::function<long(const Ast &)> eval = [&](const Ast &ast) {
|
|
if (ast.name == "NUMBER") {
|
|
return ast.token_to_number<long>();
|
|
} else {
|
|
const auto &nodes = ast.nodes;
|
|
auto result = eval(*nodes[0]);
|
|
for (auto i = 1u; i < nodes.size(); i += 2) {
|
|
auto num = eval(*nodes[i + 1]);
|
|
auto ope = nodes[i]->token[0];
|
|
switch (ope) {
|
|
case '+': result += num; break;
|
|
case '-': result -= num; break;
|
|
case '*': result *= num; break;
|
|
case '/': result /= num; break;
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
};
|
|
|
|
std::shared_ptr<Ast> ast;
|
|
auto r = EXPRESSION.parse_and_get_value("1+2*3*(4-5+6)/7-8", ast);
|
|
ast = AstOptimizer(true).optimize(ast);
|
|
auto val = eval(*ast);
|
|
|
|
EXPECT_TRUE(r.ret);
|
|
EXPECT_EQ(-3, val);
|
|
}
|
|
|
|
TEST(GeneralTest, Ignore_semantic_value_test) {
|
|
parser parser(R"(
|
|
START <- ~HELLO WORLD
|
|
HELLO <- 'Hello' _
|
|
WORLD <- 'World' _
|
|
_ <- [ \t\r\n]*
|
|
)");
|
|
|
|
parser.enable_ast();
|
|
|
|
std::shared_ptr<Ast> ast;
|
|
auto ret = parser.parse("Hello World", ast);
|
|
|
|
EXPECT_TRUE(ret);
|
|
EXPECT_EQ(1, ast->nodes.size());
|
|
EXPECT_EQ("WORLD", ast->nodes[0]->name);
|
|
}
|
|
|
|
TEST(GeneralTest, Ignore_semantic_value_of_or_predicate_test) {
|
|
parser parser(R"(
|
|
START <- _ !DUMMY HELLO_WORLD '.'
|
|
HELLO_WORLD <- HELLO 'World' _
|
|
HELLO <- 'Hello' _
|
|
DUMMY <- 'dummy' _
|
|
~_ <- [ \t\r\n]*
|
|
)");
|
|
|
|
parser.enable_ast();
|
|
|
|
std::shared_ptr<Ast> ast;
|
|
auto ret = parser.parse("Hello World.", ast);
|
|
|
|
EXPECT_TRUE(ret);
|
|
EXPECT_EQ(1, ast->nodes.size());
|
|
EXPECT_EQ("HELLO_WORLD", ast->nodes[0]->name);
|
|
}
|
|
|
|
TEST(GeneralTest, Ignore_semantic_value_of_and_predicate_test) {
|
|
parser parser(R"(
|
|
START <- _ &HELLO HELLO_WORLD '.'
|
|
HELLO_WORLD <- HELLO 'World' _
|
|
HELLO <- 'Hello' _
|
|
~_ <- [ \t\r\n]*
|
|
)");
|
|
|
|
parser.enable_ast();
|
|
|
|
std::shared_ptr<Ast> ast;
|
|
auto ret = parser.parse("Hello World.", ast);
|
|
|
|
EXPECT_TRUE(ret);
|
|
EXPECT_EQ(1, ast->nodes.size());
|
|
EXPECT_EQ("HELLO_WORLD", ast->nodes[0]->name);
|
|
}
|
|
|
|
TEST(GeneralTest, Literal_token_on_AST_test1) {
|
|
parser parser(R"(
|
|
STRING_LITERAL <- '"' (('\\"' / '\\t' / '\\n') / (!["] .))* '"'
|
|
)");
|
|
parser.enable_ast();
|
|
|
|
std::shared_ptr<Ast> ast;
|
|
auto ret = parser.parse(R"("a\tb")", ast);
|
|
|
|
EXPECT_TRUE(ret);
|
|
EXPECT_TRUE(ast->is_token);
|
|
EXPECT_EQ(R"("a\tb")", ast->token);
|
|
EXPECT_TRUE(ast->nodes.empty());
|
|
}
|
|
|
|
TEST(GeneralTest, Literal_token_on_AST_test2) {
|
|
parser parser(R"(
|
|
STRING_LITERAL <- '"' (ESC / CHAR)* '"'
|
|
ESC <- ('\\"' / '\\t' / '\\n')
|
|
CHAR <- (!["] .)
|
|
)");
|
|
parser.enable_ast();
|
|
|
|
std::shared_ptr<Ast> ast;
|
|
auto ret = parser.parse(R"("a\tb")", ast);
|
|
|
|
EXPECT_TRUE(ret);
|
|
EXPECT_FALSE(ast->is_token);
|
|
EXPECT_TRUE(ast->token.empty());
|
|
EXPECT_EQ(3, ast->nodes.size());
|
|
}
|
|
|
|
TEST(GeneralTest, Literal_token_on_AST_test3) {
|
|
parser parser(R"(
|
|
STRING_LITERAL <- < '"' (ESC / CHAR)* '"' >
|
|
ESC <- ('\\"' / '\\t' / '\\n')
|
|
CHAR <- (!["] .)
|
|
)");
|
|
parser.enable_ast();
|
|
|
|
std::shared_ptr<Ast> ast;
|
|
auto ret = parser.parse(R"("a\tb")", ast);
|
|
|
|
EXPECT_TRUE(ret);
|
|
EXPECT_TRUE(ast->is_token);
|
|
EXPECT_EQ(R"("a\tb")", ast->token);
|
|
EXPECT_TRUE(ast->nodes.empty());
|
|
}
|
|
|
|
TEST(GeneralTest, Missing_missing_definitions_test) {
|
|
parser parser(R"(
|
|
A <- B C
|
|
)");
|
|
|
|
EXPECT_FALSE(parser);
|
|
}
|
|
|
|
TEST(GeneralTest, Definition_duplicates_test) {
|
|
parser parser(R"(
|
|
A <- ''
|
|
A <- ''
|
|
)");
|
|
|
|
EXPECT_FALSE(parser);
|
|
}
|
|
|
|
TEST(GeneralTest, Semantic_values_test) {
|
|
parser parser(R"(
|
|
term <- ( a b c x )? a b c
|
|
a <- 'a'
|
|
b <- 'b'
|
|
c <- 'c'
|
|
x <- 'x'
|
|
)");
|
|
|
|
for (const auto &rule : parser.get_rule_names()) {
|
|
parser[rule.data()] = [rule](const SemanticValues &vs, std::any &) {
|
|
if (rule == "term") {
|
|
EXPECT_EQ("a at 0", std::any_cast<std::string>(vs[0]));
|
|
EXPECT_EQ("b at 1", std::any_cast<std::string>(vs[1]));
|
|
EXPECT_EQ("c at 2", std::any_cast<std::string>(vs[2]));
|
|
return std::string();
|
|
} else {
|
|
return rule + " at " + std::to_string(vs.sv().data() - vs.ss);
|
|
}
|
|
};
|
|
}
|
|
|
|
EXPECT_TRUE(parser.parse("abc"));
|
|
}
|
|
|
|
TEST(GeneralTest, Ordered_choice_count) {
|
|
parser parser(R"(
|
|
S <- 'a' / 'b'
|
|
)");
|
|
|
|
parser["S"] = [](const SemanticValues &vs) {
|
|
EXPECT_EQ(1, vs.choice());
|
|
EXPECT_EQ(2, vs.choice_count());
|
|
};
|
|
|
|
parser.parse("b");
|
|
}
|
|
|
|
TEST(GeneralTest, Ordered_choice_count_2) {
|
|
parser parser(R"(
|
|
S <- ('a' / 'b')*
|
|
)");
|
|
|
|
parser["S"] = [](const SemanticValues &vs) {
|
|
EXPECT_EQ(0, vs.choice());
|
|
EXPECT_EQ(0, vs.choice_count());
|
|
};
|
|
|
|
parser.parse("b");
|
|
}
|
|
|
|
TEST(GeneralTest, Semantic_value_tag) {
|
|
parser parser(R"(
|
|
S <- A? B* C?
|
|
A <- 'a'
|
|
B <- 'b'
|
|
C <- 'c'
|
|
)");
|
|
|
|
{
|
|
using namespace udl;
|
|
parser["S"] = [](const SemanticValues &vs) {
|
|
EXPECT_EQ(1, vs.size());
|
|
EXPECT_EQ(1, vs.tags.size());
|
|
EXPECT_EQ("C"_, vs.tags[0]);
|
|
};
|
|
auto ret = parser.parse("c");
|
|
EXPECT_TRUE(ret);
|
|
}
|
|
|
|
{
|
|
using namespace udl;
|
|
parser["S"] = [](const SemanticValues &vs) {
|
|
EXPECT_EQ(2, vs.size());
|
|
EXPECT_EQ(2, vs.tags.size());
|
|
EXPECT_EQ("B"_, vs.tags[0]);
|
|
EXPECT_EQ("B"_, vs.tags[1]);
|
|
};
|
|
auto ret = parser.parse("bb");
|
|
EXPECT_TRUE(ret);
|
|
}
|
|
|
|
{
|
|
using namespace udl;
|
|
parser["S"] = [](const SemanticValues &vs) {
|
|
EXPECT_EQ(2, vs.size());
|
|
EXPECT_EQ(2, vs.tags.size());
|
|
EXPECT_EQ("A"_, vs.tags[0]);
|
|
EXPECT_EQ("C"_, vs.tags[1]);
|
|
};
|
|
auto ret = parser.parse("ac");
|
|
EXPECT_TRUE(ret);
|
|
}
|
|
}
|
|
|
|
TEST(GeneralTest, Negated_Class_test) {
|
|
parser parser(R"(
|
|
ROOT <- [^a-z_]+
|
|
)");
|
|
|
|
bool ret = parser;
|
|
EXPECT_TRUE(ret);
|
|
|
|
EXPECT_TRUE(parser.parse("ABC123"));
|
|
EXPECT_FALSE(parser.parse("ABcZ"));
|
|
EXPECT_FALSE(parser.parse("ABCZ_"));
|
|
EXPECT_FALSE(parser.parse(""));
|
|
}
|
|
|
|
TEST(GeneralTest, token_to_number_float_test) {
|
|
parser parser(R"(
|
|
S <- '1.1'
|
|
)");
|
|
parser.enable_ast();
|
|
|
|
std::shared_ptr<Ast> ast;
|
|
auto ret = parser.parse("1.1", ast);
|
|
|
|
EXPECT_TRUE(ret);
|
|
EXPECT_TRUE(ast->is_token);
|
|
EXPECT_EQ("1.1", ast->token);
|
|
EXPECT_EQ(1.1f, ast->token_to_number<float>());
|
|
EXPECT_TRUE(ast->nodes.empty());
|
|
}
|
|
|
|
TEST(GeneralTest, ParentReferencesShouldNotBeExpired) {
|
|
auto parser = peg::parser(R"(
|
|
ROOT <- OPTIMIZES_AWAY
|
|
OPTIMIZES_AWAY <- ITEM+
|
|
ITEM <- 'a'
|
|
)");
|
|
parser.enable_ast<peg::Ast>();
|
|
|
|
std::shared_ptr<peg::Ast> ast;
|
|
parser.parse("aaa", ast);
|
|
ast = parser.optimize_ast(ast);
|
|
|
|
EXPECT_FALSE(ast->nodes[0]->parent.expired());
|
|
}
|
|
|
|
TEST(GeneralTest, EndOfInputTest) {
|
|
auto parser = peg::parser(R"(
|
|
S <- '[[' (!']]' .)* ']]' !.
|
|
)");
|
|
|
|
parser.disable_eoi_check();
|
|
|
|
auto ret = parser.parse("[[]]]");
|
|
EXPECT_FALSE(ret);
|
|
}
|
|
|
|
TEST(GeneralTest, DefaultEndOfInputTest) {
|
|
auto parser = peg::parser(R"(
|
|
S <- '[[' (!']]' .)* ']]'
|
|
)");
|
|
|
|
auto ret = parser.parse("[[]]]");
|
|
EXPECT_FALSE(ret);
|
|
}
|
|
|
|
TEST(GeneralTest, DisableEndOfInputCheckTest) {
|
|
auto parser = peg::parser(R"(
|
|
S <- '[[' (!']]' .)* ']]'
|
|
)");
|
|
|
|
parser.disable_eoi_check();
|
|
|
|
auto ret = parser.parse("[[]]]");
|
|
EXPECT_TRUE(ret);
|
|
}
|
|
|