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import os, strformat, strutils
import nimterop/treesitter/[runtime, c, cpp]
import nimterop/[ast, globals, getters, grammar]
proc printLisp(root: TSNode) =
var
node = root
nextnode: TSNode
depth = 0
while true:
if not node.tsNodeIsNull() and depth > -1:
if gStateRT.pretty:
stdout.write spaces(depth)
let
(line, col) = node.getLineCol()
stdout.write &"({$node.tsNodeType()} {line} {col} {node.tsNodeEndByte() - node.tsNodeStartByte()}"
else:
break
if node.tsNodeNamedChildCount() != 0:
if gStateRT.pretty:
echo ""
nextnode = node.tsNodeNamedChild(0)
depth += 1
else:
if gStateRT.pretty:
echo ")"
else:
stdout.write ")"
nextnode = node.tsNodeNextNamedSibling()
if nextnode.tsNodeIsNull():
while true:
node = node.tsNodeParent()
depth -= 1
if depth == -1:
break
if gStateRT.pretty:
echo spaces(depth) & ")"
else:
stdout.write ")"
if node == root:
break
if not node.tsNodeNextNamedSibling().tsNodeIsNull():
node = node.tsNodeNextNamedSibling()
break
else:
node = nextnode
if node == root:
break
proc process(path: string) =
if not existsFile(path):
echo "Invalid path " & path
return
var
parser = tsParserNew()
ext = path.splitFile().ext
defer:
parser.tsParserDelete()
gStateRT.sourceFile = path
if gStateRT.mode.len == 0:
if ext in [".h", ".c"]:
gStateRT.mode = "c"
elif ext in [".hxx", ".hpp", ".hh", ".H", ".h++", ".cpp", ".cxx", ".cc", ".C", ".c++"]:
gStateRT.mode = "cpp"
if gStateRT.preprocess:
gStateRT.code = getPreprocessor(path)
else:
gStateRT.code = readFile(path)
doAssert gStateRT.code.len != 0, "Empty file or preprocessor error"
if gStateRT.mode == "c":
doAssert parser.tsParserSetLanguage(treeSitterC()), "Failed to load C parser"
elif gStateRT.mode == "cpp":
doAssert parser.tsParserSetLanguage(treeSitterCpp()), "Failed to load C++ parser"
else:
doAssert false, "Invalid parser " & gStateRT.mode
var
tree = parser.tsParserParseString(nil, gStateRT.code.cstring, gStateRT.code.len.uint32)
root = tree.tsTreeRootNode()
defer:
tree.tsTreeDelete()
if gStateRT.past:
printLisp(root)
elif gStateRT.pnim:
printNim(path, root)
elif gStateRT.preprocess:
echo gStateRT.code
proc main(
mode = modeDefault,
past = false,
pnim = false,
pretty = true,
preprocess = false,
pgrammar = false,
recurse = false,
debug = false,
defines: seq[string] = @[],
includeDirs: seq[string] = @[],
symOverride: seq[string] = @[],
pluginSourcePath: string = "",
source: seq[string],
) =
gStateRT = State(
mode: mode,
past: past,
pnim: pnim,
pretty: pretty,
preprocess: preprocess,
recurse: recurse,
debug: debug,
defines: defines,
includeDirs: includeDirs,
symOverride: symOverride,
pluginSourcePath: pluginSourcePath
)
gStateRT.symOverride = gStateRT.symOverride.getSplitComma()
if pluginSourcePath.nBl:
loadPlugin(pluginSourcePath)
if pgrammar:
parseGrammar()
printGrammar()
elif source.len != 0:
process(source[0])
when isMainModule:
import cligen
dispatch(main, help = {
"past": "print AST output",
"mode": "language; see CompileMode", # TODO: auto-generate valid choices
"pnim": "print Nim output",
"defines": "definitions to pass to preprocessor",
"includeDirs": "include directory to pass to preprocessor",
"symOverride": "skip generating specified symbols",
"pluginSourcePath": "Nim file to build and load as a plugin",
"preprocess": "run preprocessor on header",
"pgrammar": "print grammar",
"recurse": "process #include files",
"debug": "enable debug output",
"source" : "C/C++ source/header",
}, short = {
"past": 'a',
"pnim": 'n',
"defines": 'D',
"includeDirs": 'I',
"symOverride": 'O',
"preprocess": 'p',
"recurse": 'r',
"debug": 'd',
"pgrammar": 'g'
})
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