| 1 | == Indenting == |
| 2 | |
| 3 | * Use spaces to indent. Tabs should not appear in code files (with the exception of files that require tabs, e.g. Makefiles). We have a Subversion pre-commit script that enforces this rule for most source files, preventing commits of files that don't follow this rule. |
| 4 | * The indent size is 4 spaces. |
| 5 | * Code editors should be configured to expand tabs that you type to 4 spaces. |
| 6 | |
| 7 | === Braces === |
| 8 | |
| 9 | * Function definitions — open and close braces should be on lines by themselves. Do not put the open brace on the same line as the function signature. |
| 10 | |
| 11 | Right: |
| 12 | {{{ |
| 13 | #!cpp |
| 14 | void foo() |
| 15 | { |
| 16 | // do stuff |
| 17 | } |
| 18 | }}} |
| 19 | |
| 20 | Wrong: |
| 21 | {{{ |
| 22 | #!cpp |
| 23 | void foo() { |
| 24 | // do stuff |
| 25 | } |
| 26 | }}} |
| 27 | |
| 28 | * Other braces, including for, while, do, switch statements and class definitions — the open brace should go on the same line as the as the control structure. |
| 29 | |
| 30 | Right: |
| 31 | {{{ |
| 32 | #!cpp |
| 33 | for (int i = 0; i < 10; i++) { |
| 34 | // do stuff |
| 35 | } |
| 36 | }}} |
| 37 | |
| 38 | Wrong: |
| 39 | {{{ |
| 40 | #!cpp |
| 41 | for (int i = 0; i < 10; i++) |
| 42 | { |
| 43 | // do stuff |
| 44 | } |
| 45 | }}} |
| 46 | |
| 47 | |
| 48 | * If/else statements — as above, but if there is an else clause, the close brace should go on the same line as the else. Also, one-line if or else clauses should not get braces. |
| 49 | |
| 50 | Right: |
| 51 | {{{ |
| 52 | #!cpp |
| 53 | if (timeToGetCoffee) { |
| 54 | buyCoffee(&coffee); |
| 55 | chugIt(coffee); |
| 56 | } else if (timeToGoHome) |
| 57 | // comment on else case |
| 58 | outtaHere = true; |
| 59 | }}} |
| 60 | |
| 61 | Wrong: |
| 62 | {{{ |
| 63 | #!cpp |
| 64 | if (timeToGetCoffee) |
| 65 | { |
| 66 | buyCoffee(&coffee); |
| 67 | chugIt(coffee); |
| 68 | // comment on else case |
| 69 | } else if (timeToGoHome) |
| 70 | { |
| 71 | outtaHere = true; |
| 72 | } |
| 73 | |
| 74 | if (timeToGetCoffee) { |
| 75 | } |
| 76 | else |
| 77 | |
| 78 | // comment on else case |
| 79 | |
| 80 | if (timeToGoHome) |
| 81 | outtaHere = true; |
| 82 | }}} |