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PHP codegen: use nimAt for PHP 5.3 compatibility

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This commit is contained in:
Andreas Rumpf 2016-03-04 21:59:58 +01:00
commit 92cf673f37
2 changed files with 17 additions and 2 deletions
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13
compiler/jsgen.nim
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@ -944,8 +944,17 @@ proc genArrayAccess(p: PProc, n: PNode, r: var TCompRes) =
else: internalError(n.info, "expr(nkBracketExpr, " & $ty.kind & ')')
r.typ = etyNone
if r.res == nil: internalError(n.info, "genArrayAccess")
if p.target == targetPHP and ty.kind in {tyString, tyCString}:
r.res = "ord($1[$2])" % [r.address, r.res]
if p.target == targetPHP:
if n.sons[0].kind in nkCallKinds+{nkStrLit..nkTripleStrLit}:
useMagic(p, "nimAt")
if ty.kind in {tyString, tyCString}:
r.res = "ord(nimAt($1, $2))" % [r.address, r.res]
else:
r.res = "nimAt($1, $2)" % [r.address, r.res]
elif ty.kind in {tyString, tyCString}:
r.res = "ord($1[$2])" % [r.address, r.res]
else:
r.res = "$1[$2]" % [r.address, r.res]
else:
r.res = "$1[$2]" % [r.address, r.res]
r.address = nil

6
lib/system/jssys.nim
View file

@ -275,6 +275,12 @@ proc mnewString(len: int): string {.asmNoStackFrame, compilerproc.} =
return result;
"""
when defined(nimphp):
proc nimAt(x: string; i: int): string {.asmNoStackFrame, compilerproc.} =
asm """
return `x`[`i`];
"""
when defined(nimphp):
proc nimSubstr(s: string; a, b: int): string {.
asmNoStackFrame, compilerproc.} =