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Diffstat (limited to '')
-rw-r--r-- | src/CheckBasicStyle.lua | 212 |
1 files changed, 212 insertions, 0 deletions
diff --git a/src/CheckBasicStyle.lua b/src/CheckBasicStyle.lua new file mode 100644 index 000000000..13a6d15d2 --- /dev/null +++ b/src/CheckBasicStyle.lua @@ -0,0 +1,212 @@ +#!/usr/bin/env lua + +-- CheckBasicStyle.lua + +--[[ +Checks that all source files (*.cpp, *.h) use the basic style requirements of the project: + - Tabs for indentation, spaces for alignment + - Trailing whitespace on non-empty lines + - Two spaces between code and line-end comment ("//") + - Spaces after comma, not before + - Opening braces not at the end of a code line + - Spaces after if, for, while + - (TODO) Spaces before *, /, & + - (TODO) Hex numbers with even digit length + - (TODO) Hex numbers in lowercase + - (TODO) Line dividers (////...) exactly 80 slashes + - (TODO) Not using "* "-style doxy comment continuation lines + +Violations that cannot be checked easily: + - Spaces around "+" (there are things like "a++", "++a", "a += 1", "X+", "stack +1" and ascii-drawn tables) + +Reports all violations on stdout in a form that is readable by Visual Studio's parser, so that dblclicking +the line brings the editor directly to the violation. + +Returns 0 on success, 1 on internal failure, 2 if any violations found + +--]] + + + + + +-- The list of file extensions that are processed: +local g_ShouldProcessExt = +{ + ["h"] = true, + ["cpp"] = true, +} + +--- The list of files not to be processed: +local g_IgnoredFiles = +{ + "Bindings/Bindings.cpp", + "LeakFinder.cpp", + "LeakFinder.h", + "MersenneTwister.h", + "StackWalker.cpp", + "StackWalker.h", +} + +--- The list of files not to be processed, as a dictionary (filename => true), built from g_IgnoredFiles +local g_ShouldIgnoreFile = {} + +-- Initialize the g_ShouldIgnoreFile map: +for _, fnam in ipairs(g_IgnoredFiles) do + g_ShouldIgnoreFile[fnam] = true +end + +--- Keeps track of the number of violations for this folder +local g_NumViolations = 0 + + + + + +--- Reports one violation +-- Pretty-prints the message +-- Also increments g_NumViolations +local function ReportViolation(a_FileName, a_LineNumber, a_PatStart, a_PatEnd, a_Message) + print(a_FileName .. "(" .. a_LineNumber .. "): " .. a_PatStart .. " .. " .. a_PatEnd .. ": " .. a_Message) + g_NumViolations = g_NumViolations + 1 +end + + + + + +--- Searches for the specified pattern, if found, reports it as a violation with the given message +local function ReportViolationIfFound(a_Line, a_FileName, a_LineNum, a_Pattern, a_Message) + local patStart, patEnd = a_Line:find(a_Pattern) + if not(patStart) then + return + end + ReportViolation(a_FileName, a_LineNum, patStart, patEnd, a_Message) +end + + + + + +local g_ViolationPatterns = +{ + -- Check against indenting using spaces: + {"^\t* +", "Indenting with a space"}, + + -- Check against alignment using tabs: + {"[^%s]\t+[^%s]", "Aligning with a tab"}, + + -- Check against trailing whitespace: + {"[^%s]%s+\n", "Trailing whitespace"}, + + -- Check that all "//"-style comments have at least two spaces in front (unless alone on line): + {"[^%s] //", "Needs at least two spaces in front of a \"//\"-style comment"}, + + -- Check that all "//"-style comments have at least one spaces after: + {"%s//[^%s/*<]", "Needs a space after a \"//\"-style comment"}, + + -- Check that all commas have spaces after them and not in front of them: + {" ,", "Extra space before a \",\""}, + {",[^%s\"%%]", "Needs a space after a \",\""}, -- Report all except >> "," << needed for splitting and >>,%s<< needed for formatting + + -- Check that opening braces are not at the end of a code line: + {"[^%s].-{\n?$", "Brace should be on a separate line"}, + + -- Space after keywords: + {"[^_]if%(", "Needs a space after \"if\""}, + {"for%(", "Needs a space after \"for\""}, + {"while%(", "Needs a space after \"while\""}, + {"switch%(", "Needs a space after \"switch\""}, + {"catch%(", "Needs a space after \"catch\""}, + + -- No space after keyword's parenthesis: + {"[^%a#]if %( ", "Remove the space after \"(\""}, + {"for %( ", "Remove the space after \"(\""}, + {"while %( ", "Remove the space after \"(\""}, + {"catch %( ", "Remove the space after \"(\""}, + + -- No space before a closing parenthesis: + {" %)", "Remove the space before \")\""}, +} + + + + + +--- Processes one file +local function ProcessFile(a_FileName) + assert(type(a_FileName) == "string") + + -- Read the whole file: + local f, err = io.open(a_FileName, "r") + if (f == nil) then + print("Cannot open file \"" .. a_FileName .. "\": " .. err) + print("Aborting") + os.exit(1) + end + local all = f:read("*all") + + -- Check that the last line is empty - otherwise processing won't work properly: + local lastChar = string.byte(all, string.len(all)) + if ((lastChar ~= 13) and (lastChar ~= 10)) then + local numLines = 1 + string.gsub(all, "\n", function() numLines = numLines + 1 end) -- Count the number of line-ends + ReportViolation(a_FileName, numLines, 1, 1, "Missing empty line at file end") + return + end + + -- Process each line separately: + -- Ref.: http://stackoverflow.com/questions/10416869/iterate-over-possibly-empty-lines-in-a-way-that-matches-the-expectations-of-exis + local lineCounter = 1 + all:gsub("\r\n", "\n") -- normalize CRLF into LF-only + string.gsub(all .. "\n", "[^\n]*\n", -- Iterate over each line, while preserving empty lines + function(a_Line) + -- Check against each violation pattern: + for _, pat in ipairs(g_ViolationPatterns) do + ReportViolationIfFound(a_Line, a_FileName, lineCounter, pat[1], pat[2]) + end + + lineCounter = lineCounter + 1 + end + ) +end + + + + + +--- Processes one item - a file or a folder +local function ProcessItem(a_ItemName) + assert(type(a_ItemName) == "string") + + -- Skip files / folders that should be ignored + if (g_ShouldIgnoreFile[a_ItemName]) then + return + end + + local ext = a_ItemName:match("%.([^/%.]-)$") + if (g_ShouldProcessExt[ext]) then + ProcessFile(a_ItemName) + end +end + + + + + +-- Process all files in the AllFiles.lst file (generated by cmake): +for fnam in io.lines("AllFiles.lst") do + ProcessItem(fnam) +end + +-- Report final verdict: +print("Number of violations found: " .. g_NumViolations) +if (g_NumViolations > 0) then + os.exit(2) +else + os.exit(0) +end + + + + |