@Test void validRuleOneReplacement() { final List<Token> tokens = Arrays.asList( new Token(REDUCTION, "reduction", 0), new Token(IDENTIFIER, "test", 0), new Token(COLON, ":", 0), new Token(MINUS, "-", 0), new Token(IDENTIFIER, "x", 0), new Token(TIMES, "*", 0), new Token(IDENTIFIER, "x", 0), new Token(ARROW, "->", 0), new Token(MINUS, "-", 0), new Token(IDENTIFIER, "x", 0), new Token(POWER, "^", 0), new Token(NUMBER, "2", 0), new Token(EOF, "", 0) ); final Parser parser = new Parser(tokens, errors::add); final List<PatternRule> expected = Collections.singletonList(new PatternRule( "test", RuleType.REDUCTION, new MultiplicationPattern( new NegativePattern(new SubFunctionPattern("x")), new SubFunctionPattern("x") ), new NegativePattern(new PowerPattern( new SubFunctionPattern("x"), new NumberPattern(new BigDecimal(2)) )) )); assertEquals(expected, parser.parse()); }
public List<PatternRule> parse() { if (used) { throw new IllegalStateException("Parser.parse can only be called once per instance"); } used = true; return rules(); }
Parser { public List<PatternRule> parse() { if (used) { throw new IllegalStateException("Parser.parse can only be called once per instance"); } used = true; return rules(); } }
Parser { public List<PatternRule> parse() { if (used) { throw new IllegalStateException("Parser.parse can only be called once per instance"); } used = true; return rules(); } Parser(final List<Token> tokens, final Consumer<? super DslError> errorReporter); }
Parser { public List<PatternRule> parse() { if (used) { throw new IllegalStateException("Parser.parse can only be called once per instance"); } used = true; return rules(); } Parser(final List<Token> tokens, final Consumer<? super DslError> errorReporter); List<PatternRule> parse(); Token getSubFunctionIdentifier(final SubFunctionPattern subFunction); }
Parser { public List<PatternRule> parse() { if (used) { throw new IllegalStateException("Parser.parse can only be called once per instance"); } used = true; return rules(); } Parser(final List<Token> tokens, final Consumer<? super DslError> errorReporter); List<PatternRule> parse(); Token getSubFunctionIdentifier(final SubFunctionPattern subFunction);  }