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#
#
# The Nim Compiler
# (c) Copyright 2012 Andreas Rumpf
#
# See the file "copying.txt", included in this
# distribution, for details about the copyright.
#
# This module implements a dependency file generator.
import
os, options, ast, astalgo, msgs, ropes, idents, passes, modulepaths
from modulegraphs import ModuleGraph
type
TGen = object of TPassContext
module: PSym
config: ConfigRef
graph: ModuleGraph
PGen = ref TGen
Backend = ref object of RootRef
dotGraph: Rope
proc addDependencyAux(b: Backend; importing, imported: string) =
addf(b.dotGraph, "$1 -> \"$2\";$n", [rope(importing), rope(imported)])
# s1 -> s2_4[label="[0-9]"];
proc addDotDependency(c: PPassContext, n: PNode): PNode =
result = n
let g = PGen(c)
let b = Backend(g.graph.backend)
case n.kind
of nkImportStmt:
for i in countup(0, sonsLen(n) - 1):
var imported = getModuleName(g.config, n.sons[i])
addDependencyAux(b, g.module.name.s, imported)
of nkFromStmt, nkImportExceptStmt:
var imported = getModuleName(g.config, n.sons[0])
addDependencyAux(b, g.module.name.s, imported)
of nkStmtList, nkBlockStmt, nkStmtListExpr, nkBlockExpr:
for i in countup(0, sonsLen(n) - 1): discard addDotDependency(c, n.sons[i])
else:
discard
proc generateDot*(graph: ModuleGraph; project: string) =
let b = Backend(graph.backend)
discard writeRope("digraph $1 {$n$2}$n" % [
rope(changeFileExt(extractFilename(project), "")), b.dotGraph],
changeFileExt(project, "dot"))
proc myOpen(graph: ModuleGraph; module: PSym): PPassContext =
var g: PGen
new(g)
g.module = module
g.config = graph.config
g.graph = graph
if graph.backend == nil:
graph.backend = Backend(dotGraph: nil)
result = g
const gendependPass* = makePass(open = myOpen, process = addDotDependency)
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