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carbon-lang
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toolchain
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lex
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testdata
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fail_trailing_comments.carbon

fail_trailing_comments.carbon 4.7 KB
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  1. // Part of the Carbon Language project, under the Apache License v2.0 with LLVM
    2. 

  2. // Exceptions. See /LICENSE for license information.
    3. 

  3. // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
    4. 

  4. //
    5. 

  5. // Trailing comments should produce errors, but we should continue to parse (and
    6. 

  6. // diagnose) code errors beyond them.
    7. 

  7. 

  8. var a: i32 = 1;   // trailing comment
    9. 

  9. var b: 32 = 13;   // more trailing comment
    10. 

  10. var c: i32 = 0.4; // still more trailing comment
    11. 

  11. 

  12. // We keep the auto-update marker below the above so check lines don't disrupt
    13. 

  13. // the trailing comment lines with similar prefixes.
    14. 

  14. // AUTOUPDATE
    15. 

  15. // TIP: To test this file alone, run:
    16. 

  16. // TIP:   bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/lex/testdata/fail_trailing_comments.carbon
    17. 

  17. // TIP: To dump output, run:
    18. 

  18. // TIP:   bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/lex/testdata/fail_trailing_comments.carbon
    19. 

  19. // CHECK:STDERR: fail_trailing_comments.carbon:[[@LINE-11]]:19: error: trailing comments are not permitted [TrailingComment]
    20. 

  20. // CHECK:STDERR: var a: i32 = 1;   // trailing comment
    21. 

  21. // CHECK:STDERR:                   ^
    22. 

  22. // CHECK:STDERR:
    23. 

  23. // CHECK:STDERR: fail_trailing_comments.carbon:[[@LINE-14]]:19: error: trailing comments are not permitted [TrailingComment]
    24. 

  24. // CHECK:STDERR: var b: 32 = 13;   // more trailing comment
    25. 

  25. // CHECK:STDERR:                   ^
    26. 

  26. // CHECK:STDERR:
    27. 

  27. // CHECK:STDERR: fail_trailing_comments.carbon:[[@LINE-17]]:19: error: trailing comments are not permitted [TrailingComment]
    28. 

  28. // CHECK:STDERR: var c: i32 = 0.4; // still more trailing comment
    29. 

  29. // CHECK:STDERR:                   ^
    30. 

  30. // CHECK:STDERR:
    31. 

  31. // CHECK:STDOUT: - filename: fail_trailing_comments.carbon
    32. 

  32. // CHECK:STDOUT:   tokens:
    33. 

  33. // CHECK:STDOUT:   - { index:  1, kind:            "Var", line: {{ *}}[[@LINE-25]], column:   1, indent: 1, spelling: "var", has_leading_space: true }
    34. 

  34. // CHECK:STDOUT:   - { index:  2, kind:     "Identifier", line: {{ *}}[[@LINE-26]], column:   5, indent: 1, spelling: "a", identifier: 0, has_leading_space: true }
    35. 

  35. // CHECK:STDOUT:   - { index:  3, kind:          "Colon", line: {{ *}}[[@LINE-27]], column:   6, indent: 1, spelling: ":" }
    36. 

  36. // CHECK:STDOUT:   - { index:  4, kind: "IntTypeLiteral", line: {{ *}}[[@LINE-28]], column:   8, indent: 1, spelling: "i32", has_leading_space: true }
    37. 

  37. // CHECK:STDOUT:   - { index:  5, kind:          "Equal", line: {{ *}}[[@LINE-29]], column:  12, indent: 1, spelling: "=", has_leading_space: true }
    38. 

  38. // CHECK:STDOUT:   - { index:  6, kind:     "IntLiteral", line: {{ *}}[[@LINE-30]], column:  14, indent: 1, spelling: "1", value: "1", has_leading_space: true }
    39. 

  39. // CHECK:STDOUT:   - { index:  7, kind:           "Semi", line: {{ *}}[[@LINE-31]], column:  15, indent: 1, spelling: ";" }
    40. 

  40. // CHECK:STDOUT:   - { index:  8, kind:            "Var", line: {{ *}}[[@LINE-31]], column:   1, indent: 1, spelling: "var", has_leading_space: true }
    41. 

  41. // CHECK:STDOUT:   - { index:  9, kind:     "Identifier", line: {{ *}}[[@LINE-32]], column:   5, indent: 1, spelling: "b", identifier: 1, has_leading_space: true }
    42. 

  42. // CHECK:STDOUT:   - { index: 10, kind:          "Colon", line: {{ *}}[[@LINE-33]], column:   6, indent: 1, spelling: ":" }
    43. 

  43. // CHECK:STDOUT:   - { index: 11, kind:     "IntLiteral", line: {{ *}}[[@LINE-34]], column:   8, indent: 1, spelling: "32", value: "32", has_leading_space: true }
    44. 

  44. // CHECK:STDOUT:   - { index: 12, kind:          "Equal", line: {{ *}}[[@LINE-35]], column:  11, indent: 1, spelling: "=", has_leading_space: true }
    45. 

  45. // CHECK:STDOUT:   - { index: 13, kind:     "IntLiteral", line: {{ *}}[[@LINE-36]], column:  13, indent: 1, spelling: "13", value: "13", has_leading_space: true }
    46. 

  46. // CHECK:STDOUT:   - { index: 14, kind:           "Semi", line: {{ *}}[[@LINE-37]], column:  15, indent: 1, spelling: ";" }
    47. 

  47. // CHECK:STDOUT:   - { index: 15, kind:            "Var", line: {{ *}}[[@LINE-37]], column:   1, indent: 1, spelling: "var", has_leading_space: true }
    48. 

  48. // CHECK:STDOUT:   - { index: 16, kind:     "Identifier", line: {{ *}}[[@LINE-38]], column:   5, indent: 1, spelling: "c", identifier: 2, has_leading_space: true }
    49. 

  49. // CHECK:STDOUT:   - { index: 17, kind:          "Colon", line: {{ *}}[[@LINE-39]], column:   6, indent: 1, spelling: ":" }
    50. 

  50. // CHECK:STDOUT:   - { index: 18, kind: "IntTypeLiteral", line: {{ *}}[[@LINE-40]], column:   8, indent: 1, spelling: "i32", has_leading_space: true }
    51. 

  51. // CHECK:STDOUT:   - { index: 19, kind:          "Equal", line: {{ *}}[[@LINE-41]], column:  12, indent: 1, spelling: "=", has_leading_space: true }
    52. 

  52. // CHECK:STDOUT:   - { index: 20, kind:    "RealLiteral", line: {{ *}}[[@LINE-42]], column:  14, indent: 1, spelling: "0.4", value: "4*10^-1", has_leading_space: true }
    53. 

  53. // CHECK:STDOUT:   - { index: 21, kind:           "Semi", line: {{ *}}[[@LINE-43]], column:  17, indent: 1, spelling: ";" }
    54.