369 lines
9.9 KiB
C++
369 lines
9.9 KiB
C++
#include <catch.hpp>
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#include <tokenize/Tokenizer.h>
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#include <tokenize/TokenizerException.h>
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////////////////////////////////////////////////////////////////////////////////////////////////////
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TEST_CASE("[tokenizer] Simple strings are tokenized correctly", "[tokenizer]")
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{
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std::stringstream s(" identifier 5 \n-51\t 0 1 100 200 -300 -400");
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tokenize::Tokenizer<> p("input", s);
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REQUIRE(p.get<std::string>() == "identifier");
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REQUIRE(p.get<size_t>() == 5u);
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REQUIRE(p.get<int>() == -51);
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REQUIRE(p.get<bool>() == false);
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REQUIRE(p.get<bool>() == true);
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REQUIRE(p.get<int>() == 100);
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REQUIRE(p.get<size_t>() == 200u);
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REQUIRE(p.get<int>() == -300);
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REQUIRE_THROWS_AS(p.get<size_t>(), tokenize::TokenizerException);
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}
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////////////////////////////////////////////////////////////////////////////////////////////////////
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TEST_CASE("[tokenizer] Tokenizing exceptions are correctly reported", "[tokenizer]")
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{
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std::stringstream s(" identifier 5 \n-51\t 0 1 100 200 -300 -400");
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tokenize::Tokenizer<> p("input", s);
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REQUIRE_NOTHROW(p.expect<std::string>("identifier"));
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REQUIRE_NOTHROW(p.expect<size_t>(5u));
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REQUIRE_NOTHROW(p.expect<int>(-51));
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REQUIRE_NOTHROW(p.expect<bool>(false));
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REQUIRE_NOTHROW(p.expect<bool>(true));
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REQUIRE_NOTHROW(p.expect<int>(100));
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REQUIRE_NOTHROW(p.expect<size_t>(200u));
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REQUIRE_NOTHROW(p.expect<int>(-300));
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REQUIRE_THROWS_AS(p.expect<size_t>(-400), tokenize::TokenizerException);
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p.seek(0);
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REQUIRE_THROWS_AS(p.expect<std::string>("error"), tokenize::TokenizerException);
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p.seek(14);
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REQUIRE_THROWS_AS(p.expect<size_t>(6u), tokenize::TokenizerException);
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p.seek(17);
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REQUIRE_THROWS_AS(p.expect<int>(-50), tokenize::TokenizerException);
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p.seek(24);
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REQUIRE_THROWS_AS(p.expect<bool>(true), tokenize::TokenizerException);
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p.seek(26);
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REQUIRE_THROWS_AS(p.expect<bool>(false), tokenize::TokenizerException);
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p.seek(28);
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REQUIRE_THROWS_AS(p.expect<int>(101), tokenize::TokenizerException);
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p.seek(31);
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REQUIRE_THROWS_AS(p.expect<size_t>(201), tokenize::TokenizerException);
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p.seek(34);
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REQUIRE_THROWS_AS(p.expect<int>(-299), tokenize::TokenizerException);
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}
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////////////////////////////////////////////////////////////////////////////////////////////////////
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TEST_CASE("[tokenizer] While tokenizing, the cursor position is as expected", "[tokenizer]")
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{
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std::stringstream s(" identifier 5 \n-51\t 0 1");
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tokenize::Tokenizer<> p("input", s);
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tokenize::StreamPosition pos;
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pos = p.position();
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REQUIRE(p.testAndReturn<std::string>("error") == false);
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REQUIRE(p.position() == pos);
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REQUIRE(p.testAndReturn<std::string>("identifier") == true);
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REQUIRE(p.position() == pos);
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REQUIRE(p.testAndSkip<std::string>("error") == false);
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REQUIRE(p.position() == pos);
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REQUIRE(p.testAndSkip<std::string>("identifier") == true);
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REQUIRE(p.position() == 12);
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pos = p.position();
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REQUIRE(p.testAndReturn<size_t>(6u) == false);
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REQUIRE(p.position() == pos);
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REQUIRE(p.testAndReturn<size_t>(5u) == true);
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REQUIRE(p.position() == pos);
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REQUIRE(p.testAndSkip<size_t>(6u) == false);
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REQUIRE(p.position() == pos);
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REQUIRE(p.testAndSkip<size_t>(5u) == true);
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REQUIRE(p.position() == 15);
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pos = p.position();
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REQUIRE(p.testAndReturn<int>(-50) == false);
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REQUIRE(p.position() == pos);
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REQUIRE(p.testAndReturn<int>(-51) == true);
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REQUIRE(p.position() == pos);
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REQUIRE(p.testAndSkip<int>(-50) == false);
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REQUIRE(p.position() == pos);
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REQUIRE(p.testAndSkip<int>(-51) == true);
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REQUIRE(p.position() == 22);
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pos = p.position();
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REQUIRE(p.testAndReturn<bool>(true) == false);
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REQUIRE(p.position() == pos);
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REQUIRE(p.testAndReturn<bool>(false) == true);
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REQUIRE(p.position() == pos);
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REQUIRE(p.testAndSkip<bool>(true) == false);
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REQUIRE(p.position() == pos);
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REQUIRE(p.testAndSkip<bool>(false) == true);
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REQUIRE(p.position() == 25);
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pos = p.position();
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REQUIRE(p.testAndReturn<bool>(false) == false);
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REQUIRE(p.position() == pos);
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REQUIRE(p.testAndReturn<bool>(true) == true);
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REQUIRE(p.position() == pos);
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REQUIRE(p.testAndSkip<bool>(false) == false);
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REQUIRE(p.position() == pos);
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REQUIRE(p.testAndSkip<bool>(true) == true);
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REQUIRE(p.position() == 27);
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}
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////////////////////////////////////////////////////////////////////////////////////////////////////
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TEST_CASE("[tokenizer] The end of the input stream is correctly handled", "[tokenizer]")
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{
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std::stringstream s1("test");
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tokenize::Tokenizer<> p1("input", s1);
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REQUIRE_NOTHROW(p1.expect<std::string>("test"));
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REQUIRE_THROWS_AS(p1.get<std::string>(), tokenize::TokenizerException);
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std::stringstream s2("test1 test2 test3");
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tokenize::Tokenizer<> p2("input", s2);
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REQUIRE_NOTHROW(p2.expect<std::string>("test1"));
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REQUIRE_NOTHROW(p2.expect<std::string>("test2"));
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REQUIRE_NOTHROW(p2.expect<std::string>("test3"));
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REQUIRE_THROWS_AS(p2.get<std::string>(), tokenize::TokenizerException);
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std::stringstream s3("-127");
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tokenize::Tokenizer<> p3("input", s3);
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p3.expect<int>(-127);
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REQUIRE_THROWS_AS(p3.get<int>(), tokenize::TokenizerException);
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std::stringstream s4("128 -1023 -4095");
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tokenize::Tokenizer<> p4("input", s4);
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REQUIRE_NOTHROW(p4.expect<size_t>(128));
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REQUIRE_NOTHROW(p4.expect<int>(-1023));
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REQUIRE_NOTHROW(p4.expect<int>(-4095));
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REQUIRE_THROWS_AS(p4.get<int>(), tokenize::TokenizerException);
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std::stringstream s5("0");
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tokenize::Tokenizer<> p5("input", s5);
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p5.expect<bool>(false);
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REQUIRE_THROWS_AS(p5.get<bool>(), tokenize::TokenizerException);
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std::stringstream s6("0 1 0");
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tokenize::Tokenizer<> p6("input", s6);
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REQUIRE_NOTHROW(p6.expect<bool>(false));
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REQUIRE_NOTHROW(p6.expect<bool>(true));
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REQUIRE_NOTHROW(p6.expect<bool>(false));
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REQUIRE_THROWS_AS(p6.get<bool>(), tokenize::TokenizerException);
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}
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////////////////////////////////////////////////////////////////////////////////////////////////////
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TEST_CASE("[tokenizer] While tokenizing, the cursor location is as expcected", "[tokenizer]")
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{
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std::stringstream s("123 \n4\ntest1\n test2\ntest3 \ntest4\n\n\n\n");
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tokenize::Tokenizer<> p("input", s);
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const auto startPosition = p.position();
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{
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auto l = tokenize::Location(p);
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REQUIRE(l.rowStart() == 1u);
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REQUIRE(l.columnStart() == 1u);
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REQUIRE(p.currentCharacter() == '1');
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}
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REQUIRE_NOTHROW(p.advance());
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{
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auto l = tokenize::Location(p);
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REQUIRE(l.rowStart() == 1u);
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REQUIRE(l.columnStart() == 2u);
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REQUIRE(p.currentCharacter() == '2');
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}
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REQUIRE_NOTHROW(p.advance());
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{
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auto l = tokenize::Location(p);
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REQUIRE(l.rowStart() == 1u);
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REQUIRE(l.columnStart() == 3u);
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REQUIRE(p.currentCharacter() == '3');
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}
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REQUIRE_NOTHROW(p.advance());
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{
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auto l = tokenize::Location(p);
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REQUIRE(l.rowStart() == 1u);
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REQUIRE(l.columnStart() == 4u);
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REQUIRE(p.currentCharacter() == ' ');
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}
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REQUIRE_NOTHROW(p.advance());
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{
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auto l = tokenize::Location(p);
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REQUIRE(l.rowStart() == 1u);
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REQUIRE(l.columnStart() == 5u);
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REQUIRE(p.currentCharacter() == '\n');
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}
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REQUIRE_NOTHROW(p.advance());
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{
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auto l = tokenize::Location(p);
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REQUIRE(l.rowStart() == 2u);
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REQUIRE(l.columnStart() == 1u);
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REQUIRE(p.currentCharacter() == '4');
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}
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REQUIRE_NOTHROW(p.advance());
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REQUIRE_NOTHROW(p.expect<std::string>("test1"));
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{
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auto l = tokenize::Location(p);
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REQUIRE(l.rowStart() == 3u);
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REQUIRE(l.columnStart() == 6u);
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}
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REQUIRE_NOTHROW(p.expect<std::string>("test2"));
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{
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auto l = tokenize::Location(p);
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REQUIRE(l.rowStart() == 4u);
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REQUIRE(l.columnStart() == 7u);
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}
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REQUIRE_NOTHROW(p.expect<std::string>("test3"));
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{
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auto l = tokenize::Location(p);
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REQUIRE(l.rowStart() == 5u);
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REQUIRE(l.columnStart() == 6u);
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}
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REQUIRE_NOTHROW(p.skipLine());
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{
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auto l = tokenize::Location(p);
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REQUIRE(l.rowStart() == 6u);
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REQUIRE(l.columnStart() == 1u);
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}
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REQUIRE_NOTHROW(p.skipLine());
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{
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auto l = tokenize::Location(p);
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REQUIRE(l.rowStart() == 7u);
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REQUIRE(l.columnStart() == 1u);
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}
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REQUIRE_NOTHROW(p.skipWhiteSpace());
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{
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auto l = tokenize::Location(p);
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REQUIRE(l.rowStart() == 10u);
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REQUIRE(l.columnStart() == 1u);
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REQUIRE(p.atEnd());
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}
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p.reset();
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REQUIRE(p.position() == startPosition);
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REQUIRE_FALSE(p.atEnd());
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for (size_t i = 0; i < 5; i++)
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p.advance();
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REQUIRE(p.position() == static_cast<std::istream::pos_type>(5));
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p.seek(static_cast<std::istream::pos_type>(7));
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REQUIRE(p.position() == static_cast<std::istream::pos_type>(7));
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REQUIRE_NOTHROW(p.expect<std::string>("test1"));
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// TODO: test tokenizer with multiple sections
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}
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////////////////////////////////////////////////////////////////////////////////////////////////////
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TEST_CASE("[tokenizer] Comments are correctly removed", "[tokenizer]")
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{
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std::stringstream s1("; comment at beginning\ntest1; comment in between\ntest2; comment at end");
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tokenize::Tokenizer<> p1("input", s1);
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p1.removeComments(";", "\n", false);
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REQUIRE_NOTHROW(p1.expect<std::string>("test1"));
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{
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auto l = tokenize::Location(p1);
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REQUIRE(l.rowStart() == 2u);
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REQUIRE(l.columnStart() == 6u);
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}
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REQUIRE_NOTHROW(p1.expect<std::string>("test2"));
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{
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auto l = tokenize::Location(p1);
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REQUIRE(l.rowStart() == 3u);
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REQUIRE(l.columnStart() == 6u);
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}
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p1.skipWhiteSpace();
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REQUIRE(p1.atEnd());
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std::stringstream s2("test;");
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tokenize::Tokenizer<> p2("input", s2);
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p2.removeComments(";", "\n", false);
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REQUIRE_NOTHROW(p2.expect<std::string>("test"));
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p2.skipWhiteSpace();
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REQUIRE(p2.atEnd());
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std::stringstream s3("/* comment at start */ test1 /* comment in between */ test2 /*");
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tokenize::Tokenizer<> p3("input", s3);
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p3.removeComments("/*", "*/", true);
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REQUIRE_NOTHROW(p3.expect<std::string>("test1"));
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REQUIRE_NOTHROW(p3.expect<std::string>("test2"));
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p3.skipWhiteSpace();
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REQUIRE(p3.atEnd());
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// Check that if there are no comments, the end is not accidentally truncated
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std::stringstream s4("test foo bar");
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tokenize::Tokenizer<> p4("input", s4);
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p4.removeComments(";", "\n", false);
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REQUIRE_NOTHROW(p4.expect<std::string>("test"));
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REQUIRE_NOTHROW(p4.expect<std::string>("foo"));
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REQUIRE_NOTHROW(p4.expect<std::string>("bar"));
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REQUIRE(p4.atEnd());
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}
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