mirror of
https://github.com/nim-lang/Nim.git
synced 2025-12-30 01:44:37 +00:00
7e747d11c6
* Cleanup compiler code base
* Unify add calls
* Unify len invocations
* Unify range operators
* Fix oversight
* Remove {.procvar.} pragma
* initCandidate -> newCandidate where reasonable
* Unify safeLen calls
73 lines
2.6 KiB
Nim
73 lines
2.6 KiB
Nim
#
|
|
#
|
|
# 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 Nim's simple filters and helpers for filters.
|
|
|
|
import
|
|
llstream, idents, strutils, ast, msgs, options,
|
|
renderer, pathutils
|
|
|
|
proc invalidPragma(conf: ConfigRef; n: PNode) =
|
|
localError(conf, n.info,
|
|
"'$1' not allowed here" % renderTree(n, {renderNoComments}))
|
|
|
|
proc getArg(conf: ConfigRef; n: PNode, name: string, pos: int): PNode =
|
|
result = nil
|
|
if n.kind in {nkEmpty..nkNilLit}: return
|
|
for i in 1..<n.len:
|
|
if n[i].kind == nkExprEqExpr:
|
|
if n[i][0].kind != nkIdent: invalidPragma(conf, n)
|
|
if cmpIgnoreStyle(n[i][0].ident.s, name) == 0:
|
|
return n[i][1]
|
|
elif i == pos:
|
|
return n[i]
|
|
|
|
proc charArg*(conf: ConfigRef; n: PNode, name: string, pos: int, default: char): char =
|
|
var x = getArg(conf, n, name, pos)
|
|
if x == nil: result = default
|
|
elif x.kind == nkCharLit: result = chr(int(x.intVal))
|
|
else: invalidPragma(conf, n)
|
|
|
|
proc strArg*(conf: ConfigRef; n: PNode, name: string, pos: int, default: string): string =
|
|
var x = getArg(conf, n, name, pos)
|
|
if x == nil: result = default
|
|
elif x.kind in {nkStrLit..nkTripleStrLit}: result = x.strVal
|
|
else: invalidPragma(conf, n)
|
|
|
|
proc boolArg*(conf: ConfigRef; n: PNode, name: string, pos: int, default: bool): bool =
|
|
var x = getArg(conf, n, name, pos)
|
|
if x == nil: result = default
|
|
elif x.kind == nkIdent and cmpIgnoreStyle(x.ident.s, "true") == 0: result = true
|
|
elif x.kind == nkIdent and cmpIgnoreStyle(x.ident.s, "false") == 0: result = false
|
|
else: invalidPragma(conf, n)
|
|
|
|
proc filterStrip*(conf: ConfigRef; stdin: PLLStream, filename: AbsoluteFile, call: PNode): PLLStream =
|
|
var pattern = strArg(conf, call, "startswith", 1, "")
|
|
var leading = boolArg(conf, call, "leading", 2, true)
|
|
var trailing = boolArg(conf, call, "trailing", 3, true)
|
|
result = llStreamOpen("")
|
|
var line = newStringOfCap(80)
|
|
while llStreamReadLine(stdin, line):
|
|
var stripped = strip(line, leading, trailing)
|
|
if pattern.len == 0 or startsWith(stripped, pattern):
|
|
llStreamWriteln(result, stripped)
|
|
else:
|
|
llStreamWriteln(result, line)
|
|
llStreamClose(stdin)
|
|
|
|
proc filterReplace*(conf: ConfigRef; stdin: PLLStream, filename: AbsoluteFile, call: PNode): PLLStream =
|
|
var sub = strArg(conf, call, "sub", 1, "")
|
|
if sub.len == 0: invalidPragma(conf, call)
|
|
var by = strArg(conf, call, "by", 2, "")
|
|
result = llStreamOpen("")
|
|
var line = newStringOfCap(80)
|
|
while llStreamReadLine(stdin, line):
|
|
llStreamWriteln(result, replace(line, sub, by))
|
|
llStreamClose(stdin)
|