PorygonLang/tests/parser/ParserTests.cpp

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#ifdef TESTS_BUILD
#include <catch.hpp>
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#include "../../src/Parser/Parser.hpp"
TEST_CASE( "Parse single true keyword", "[parser]" ) {
vector<IToken*> v {new SimpleToken(TokenKind::TrueKeyword,0,0), new SimpleToken(TokenKind::EndOfFile,0,0)};
Parser parser = Parser(v, nullptr);
auto parsedStatements = parser.Parse() -> GetStatements();
REQUIRE(parsedStatements.size() == 1);
auto firstStatement = parsedStatements[0];
REQUIRE(firstStatement -> GetKind() == ParsedStatementKind::Expression);
auto expression = ((ParsedExpressionStatement*)firstStatement)->GetExpression();
REQUIRE(expression -> GetKind() == ParsedExpressionKind::LiteralBool);
auto boolean = ((LiteralBoolExpression*)expression);
REQUIRE(boolean->GetValue() == true);
}
TEST_CASE( "Parse single false keyword", "[parser]" ) {
vector<IToken*> v {new SimpleToken(TokenKind::FalseKeyword,0,0), new SimpleToken(TokenKind::EndOfFile,0,0)};
Parser parser = Parser(v, nullptr);
auto parsedStatements = parser.Parse() -> GetStatements();
REQUIRE(parsedStatements.size() == 1);
auto firstStatement = parsedStatements[0];
REQUIRE(firstStatement -> GetKind() == ParsedStatementKind::Expression);
auto expression = ((ParsedExpressionStatement*)firstStatement)->GetExpression();
REQUIRE(expression -> GetKind() == ParsedExpressionKind::LiteralBool);
auto boolean = ((LiteralBoolExpression*)expression);
REQUIRE(boolean->GetValue() == false);
}
TEST_CASE( "Parse simple addition", "[parser]" ) {
vector<IToken*> v {
new IntegerToken(5, 0, 0),
new SimpleToken(TokenKind::PlusToken,0,0),
new IntegerToken(10, 0, 0),
new SimpleToken(TokenKind::EndOfFile,0,0)
};
Parser parser = Parser(v, nullptr);
auto parsedStatements = parser.Parse() -> GetStatements();
REQUIRE(parsedStatements.size() == 1);
auto firstStatement = parsedStatements[0];
REQUIRE(firstStatement -> GetKind() == ParsedStatementKind::Expression);
auto expression = ((ParsedExpressionStatement*)firstStatement)->GetExpression();
REQUIRE(expression -> GetKind() == ParsedExpressionKind::Binary);
auto binary = ((BinaryExpression*)expression);
CHECK(binary -> GetOperatorKind() == BinaryOperatorKind::Addition);
auto left = binary->GetLeft();
auto right = binary->GetRight();
REQUIRE(left->GetKind() == ParsedExpressionKind::LiteralInteger);
REQUIRE(right->GetKind() == ParsedExpressionKind::LiteralInteger);
CHECK(((LiteralIntegerExpression*)left)->GetValue() == 5);
CHECK(((LiteralIntegerExpression*)right)->GetValue() == 10);
}
TEST_CASE( "Parse simple negation", "[parser]" ) {
vector<IToken*> v {
new SimpleToken(TokenKind::MinusToken,0,0),
new IntegerToken(10, 0, 0),
new SimpleToken(TokenKind::EndOfFile,0,0)
};
Parser parser = Parser(v, nullptr);
auto parsedStatements = parser.Parse() -> GetStatements();
REQUIRE(parsedStatements.size() == 1);
auto firstStatement = parsedStatements[0];
REQUIRE(firstStatement -> GetKind() == ParsedStatementKind::Expression);
auto expression = ((ParsedExpressionStatement*)firstStatement)->GetExpression();
REQUIRE(expression -> GetKind() == ParsedExpressionKind::Unary);
auto unary = ((UnaryExpression*)expression);
CHECK(unary -> GetOperatorKind() == UnaryOperatorKind::Negation);
auto operand = unary->GetOperand();
REQUIRE(operand->GetKind() == ParsedExpressionKind::LiteralInteger);
CHECK(((LiteralIntegerExpression*)operand)->GetValue() == 10);
}
TEST_CASE( "Parse logical negation", "[parser]" ) {
vector<IToken*> v {
new SimpleToken(TokenKind::NotKeyword,0,0),
new SimpleToken(TokenKind::FalseKeyword,0,0),
new SimpleToken(TokenKind::EndOfFile,0,0)
};
Parser parser = Parser(v, nullptr);
auto parsedStatements = parser.Parse() -> GetStatements();
REQUIRE(parsedStatements.size() == 1);
auto firstStatement = parsedStatements[0];
REQUIRE(firstStatement -> GetKind() == ParsedStatementKind::Expression);
auto expression = ((ParsedExpressionStatement*)firstStatement)->GetExpression();
REQUIRE(expression -> GetKind() == ParsedExpressionKind::Unary);
auto unary = ((UnaryExpression*)expression);
CHECK(unary -> GetOperatorKind() == UnaryOperatorKind::LogicalNegation);
auto operand = unary->GetOperand();
REQUIRE(operand->GetKind() == ParsedExpressionKind::LiteralBool);
CHECK(((LiteralBoolExpression*)operand)->GetValue() == false);
}
TEST_CASE( "Are parenthesized expressions valid", "[parser]" ) {
vector<IToken*> v {
new IntegerToken(5, 0, 0),
new SimpleToken(TokenKind::PlusToken,0,0),
new IntegerToken(10, 0, 0),
new SimpleToken(TokenKind::StarToken,0,0),
new IntegerToken(6, 0, 0),
new SimpleToken(TokenKind::EndOfFile,0,0)
};
Parser parser = Parser(v, nullptr);
auto parsedStatements = parser.Parse() -> GetStatements();
REQUIRE(parsedStatements.size() == 1);
auto firstStatement = parsedStatements[0];
REQUIRE(firstStatement -> GetKind() == ParsedStatementKind::Expression);
auto expression = ((ParsedExpressionStatement*)firstStatement)->GetExpression();
REQUIRE(expression -> GetKind() == ParsedExpressionKind::Binary);
auto binary = ((BinaryExpression*)expression);
CHECK(binary -> GetOperatorKind() == BinaryOperatorKind::Addition);
auto left = binary->GetLeft();
auto right = binary->GetRight();
REQUIRE(left->GetKind() == ParsedExpressionKind::LiteralInteger);
REQUIRE(right->GetKind() == ParsedExpressionKind::Binary);
CHECK(((LiteralIntegerExpression*)left)->GetValue() == 5);
left = ((BinaryExpression*)right)->GetLeft();
right = ((BinaryExpression*)right)->GetRight();
CHECK(((LiteralIntegerExpression*)left)->GetValue() == 10);
CHECK(((LiteralIntegerExpression*)right)->GetValue() == 6);
}
TEST_CASE( "Assert binary precedence", "[parser]" ) {
vector<IToken*> v {
new SimpleToken(TokenKind::OpenParenthesis,0,0),
new IntegerToken(10, 0, 0),
new SimpleToken(TokenKind::CloseParenthesis,0,0),
new SimpleToken(TokenKind::EndOfFile,0,0)
};
Parser parser = Parser(v, nullptr);
auto parsedStatements = parser.Parse() -> GetStatements();
REQUIRE(parsedStatements.size() == 1);
auto firstStatement = parsedStatements[0];
REQUIRE(firstStatement -> GetKind() == ParsedStatementKind::Expression);
auto expression = ((ParsedExpressionStatement*)firstStatement)->GetExpression();
REQUIRE(expression -> GetKind() == ParsedExpressionKind::Parenthesized);
auto innerExpression = ((ParenthesizedExpression*)expression) -> GetInnerExpression();
REQUIRE(innerExpression -> GetKind() == ParsedExpressionKind::LiteralInteger);
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}
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TEST_CASE( "Parse String Tokens", "[parser]" ) {
vector<IToken*> v {new StringToken("foo bar", 0,0), new SimpleToken(TokenKind::EndOfFile,0,0)};
Parser parser = Parser(v, nullptr);
auto parsedStatements = parser.Parse() -> GetStatements();
REQUIRE(parsedStatements.size() == 1);
auto firstStatement = parsedStatements[0];
REQUIRE(firstStatement -> GetKind() == ParsedStatementKind::Expression);
auto expression = ((ParsedExpressionStatement*)firstStatement)->GetExpression();
REQUIRE(expression -> GetKind() == ParsedExpressionKind::LiteralString);
auto boolean = ((LiteralStringExpression*)expression);
REQUIRE(boolean->GetValue() == "foo bar");
}
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TEST_CASE( "Parse Global Assignment", "[parser]" ) {
vector<IToken*> v {
new IdentifierToken("foo",0,0),
new SimpleToken(TokenKind::AssignmentToken,0,0),
new SimpleToken(TokenKind::TrueKeyword,0,0),
new SimpleToken(TokenKind::EndOfFile,0,0)
};
Parser parser = Parser(v, nullptr);
auto parsedStatements = parser.Parse() -> GetStatements();
REQUIRE(parsedStatements.size() == 1);
auto firstStatement = parsedStatements[0];
REQUIRE(firstStatement -> GetKind() == ParsedStatementKind::Assignment);
auto assignment = (ParsedAssignmentStatement*)firstStatement;
REQUIRE(!assignment -> IsLocal());
REQUIRE(assignment->GetIdentifier() == "foo");
REQUIRE(((LiteralBoolExpression*)assignment->GetExpression()) -> GetValue());
}
TEST_CASE( "Parse local Assignment", "[parser]" ) {
vector<IToken*> v {
new SimpleToken(TokenKind::LocalKeyword,0,0),
new IdentifierToken("foo",0,0),
new SimpleToken(TokenKind::AssignmentToken,0,0),
new SimpleToken(TokenKind::TrueKeyword,0,0),
new SimpleToken(TokenKind::EndOfFile,0,0)
};
Parser parser = Parser(v, nullptr);
auto parsedStatements = parser.Parse() -> GetStatements();
REQUIRE(parsedStatements.size() == 1);
auto firstStatement = parsedStatements[0];
REQUIRE(firstStatement -> GetKind() == ParsedStatementKind::Assignment);
auto assignment = (ParsedAssignmentStatement*)firstStatement;
REQUIRE(assignment -> IsLocal());
REQUIRE(assignment->GetIdentifier() == "foo");
REQUIRE(((LiteralBoolExpression*)assignment->GetExpression()) -> GetValue());
}
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#endif