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authorAraq <rumpf_a@web.de>2011-04-12 01:13:42 +0200
committerAraq <rumpf_a@web.de>2011-04-12 01:13:42 +0200
commitcd292568d775d55d9abb51e962882ecda12c03a9 (patch)
tree85451f0e1f17dc0463350915f12bdd0a82a73455 /rod/semgnrc.nim
parent46c41e43690cba9bc1caff6a994bb6915df8a1b7 (diff)
downloadNim-cd292568d775d55d9abb51e962882ecda12c03a9.tar.gz
big repo cleanup
Diffstat (limited to 'rod/semgnrc.nim')
-rwxr-xr-xrod/semgnrc.nim245
1 files changed, 0 insertions, 245 deletions
diff --git a/rod/semgnrc.nim b/rod/semgnrc.nim
deleted file mode 100755
index 4894843f8..000000000
--- a/rod/semgnrc.nim
+++ /dev/null
@@ -1,245 +0,0 @@
-#
-#
-#           The Nimrod Compiler
-#        (c) Copyright 2011 Andreas Rumpf
-#
-#    See the file "copying.txt", included in this
-#    distribution, for details about the copyright.
-#
-
-# This implements the first pass over the generic body; it resolves some
-# symbols. Thus for generics there is a two-phase symbol lookup just like
-# in C++.
-# A problem is that it cannot be detected if the symbol is introduced
-# as in ``var x = ...`` or used because macros/templates can hide this!
-# So we have to eval templates/macros right here so that symbol
-# lookup can be accurate.
-
-type 
-  TSemGenericFlag = enum 
-    withinBind, withinTypeDesc
-  TSemGenericFlags = set[TSemGenericFlag]
-
-proc semGenericStmt(c: PContext, n: PNode, flags: TSemGenericFlags = {}): PNode
-proc semGenericStmtScope(c: PContext, n: PNode, 
-                         flags: TSemGenericFlags = {}): PNode = 
-  openScope(c.tab)
-  result = semGenericStmt(c, n, flags)
-  closeScope(c.tab)
-
-proc semGenericStmtSymbol(c: PContext, n: PNode, s: PSym): PNode = 
-  incl(s.flags, sfUsed)
-  case s.kind
-  of skUnknown: 
-    # Introduced in this pass! Leave it as an identifier.
-    result = n
-  of skProc, skMethod, skIterator, skConverter: 
-    result = symChoice(c, n, s)
-  of skTemplate: 
-    result = semTemplateExpr(c, n, s, false)
-  of skMacro: 
-    result = semMacroExpr(c, n, s, false)
-  of skGenericParam: 
-    result = newSymNode(s, n.info)
-  of skParam: 
-    result = n
-  of skType: 
-    if (s.typ != nil) and (s.typ.kind != tyGenericParam): 
-      result = newSymNode(s, n.info)
-    else: 
-      result = n
-  else: result = newSymNode(s, n.info)
-  
-proc getIdentNode(n: PNode): PNode = 
-  case n.kind
-  of nkPostfix: result = getIdentNode(n.sons[1])
-  of nkPragmaExpr, nkAccQuoted: result = getIdentNode(n.sons[0])
-  of nkIdent: result = n
-  else: 
-    illFormedAst(n)
-    result = n
-
-#  of nkAccQuoted: 
-#    s = lookUp(c, n)
-#    if withinBind in flags: result = symChoice(c, n, s)
-#    else: result = semGenericStmtSymbol(c, n, s)
-
-proc semGenericStmt(c: PContext, n: PNode, 
-                    flags: TSemGenericFlags = {}): PNode = 
-  result = n
-  if gCmd == cmdIdeTools: suggestStmt(c, n)
-  case n.kind
-  of nkIdent:
-    var s = SymtabGet(c.Tab, n.ident)
-    if s == nil:
-      # no error if symbol cannot be bound, unless in ``bind`` context:
-      if withinBind in flags: 
-        localError(n.info, errUndeclaredIdentifier, n.ident.s)
-    else:
-      if withinBind in flags: result = symChoice(c, n, s)
-      else: result = semGenericStmtSymbol(c, n, s)
-  of nkDotExpr: 
-    var s = QualifiedLookUp(c, n, {})
-    if s != nil: result = semGenericStmtSymbol(c, n, s)
-  of nkEmpty, nkSym..nkNilLit: 
-    nil
-  of nkBind: 
-    result = semGenericStmt(c, n.sons[0], {withinBind})
-  of nkCall, nkHiddenCallConv, nkInfix, nkPrefix, nkCommand, nkCallStrLit: 
-    # check if it is an expression macro:
-    checkMinSonsLen(n, 1)
-    var s = qualifiedLookup(c, n.sons[0], {})
-    if s != nil: 
-      incl(s.flags, sfUsed)
-      case s.kind
-      of skMacro: 
-        return semMacroExpr(c, n, s, false)
-      of skTemplate: 
-        return semTemplateExpr(c, n, s, false)
-      of skUnknown, skParam: 
-        # Leave it as an identifier.
-      of skProc, skMethod, skIterator, skConverter: 
-        n.sons[0] = symChoice(c, n.sons[0], s)
-      of skGenericParam: 
-        n.sons[0] = newSymNode(s, n.sons[0].info)
-      of skType: 
-        # bad hack for generics:
-        if (s.typ != nil) and (s.typ.kind != tyGenericParam): 
-          n.sons[0] = newSymNode(s, n.sons[0].info)
-      else: n.sons[0] = newSymNode(s, n.sons[0].info)
-    for i in countup(1, sonsLen(n) - 1): 
-      n.sons[i] = semGenericStmt(c, n.sons[i], flags)
-  of nkMacroStmt: 
-    result = semMacroStmt(c, n, false)
-  of nkIfStmt: 
-    for i in countup(0, sonsLen(n)-1): 
-      n.sons[i] = semGenericStmtScope(c, n.sons[i])
-  of nkWhileStmt: 
-    openScope(c.tab)
-    for i in countup(0, sonsLen(n)-1): n.sons[i] = semGenericStmt(c, n.sons[i])
-    closeScope(c.tab)
-  of nkCaseStmt: 
-    openScope(c.tab)
-    n.sons[0] = semGenericStmt(c, n.sons[0])
-    for i in countup(1, sonsLen(n)-1): 
-      var a = n.sons[i]
-      checkMinSonsLen(a, 1)
-      var L = sonsLen(a)
-      for j in countup(0, L - 2): a.sons[j] = semGenericStmt(c, a.sons[j])
-      a.sons[L - 1] = semGenericStmtScope(c, a.sons[L - 1])
-    closeScope(c.tab)
-  of nkForStmt: 
-    var L = sonsLen(n)
-    openScope(c.tab)
-    n.sons[L - 2] = semGenericStmt(c, n.sons[L - 2])
-    for i in countup(0, L - 3): addDecl(c, newSymS(skUnknown, n.sons[i], c))
-    n.sons[L - 1] = semGenericStmt(c, n.sons[L - 1])
-    closeScope(c.tab)
-  of nkBlockStmt, nkBlockExpr, nkBlockType: 
-    checkSonsLen(n, 2)
-    openScope(c.tab)
-    if n.sons[0].kind != nkEmpty: addDecl(c, newSymS(skUnknown, n.sons[0], c))
-    n.sons[1] = semGenericStmt(c, n.sons[1])
-    closeScope(c.tab)
-  of nkTryStmt: 
-    checkMinSonsLen(n, 2)
-    n.sons[0] = semGenericStmtScope(c, n.sons[0])
-    for i in countup(1, sonsLen(n) - 1): 
-      var a = n.sons[i]
-      checkMinSonsLen(a, 1)
-      var L = sonsLen(a)
-      for j in countup(0, L - 2): 
-        a.sons[j] = semGenericStmt(c, a.sons[j], {withinTypeDesc})
-      a.sons[L - 1] = semGenericStmtScope(c, a.sons[L - 1])
-  of nkVarSection: 
-    for i in countup(0, sonsLen(n) - 1): 
-      var a = n.sons[i]
-      if a.kind == nkCommentStmt: continue 
-      if (a.kind != nkIdentDefs) and (a.kind != nkVarTuple): IllFormedAst(a)
-      checkMinSonsLen(a, 3)
-      var L = sonsLen(a)
-      a.sons[L-2] = semGenericStmt(c, a.sons[L-2], {withinTypeDesc})
-      a.sons[L-1] = semGenericStmt(c, a.sons[L-1])
-      for j in countup(0, L-3):
-        addDecl(c, newSymS(skUnknown, getIdentNode(a.sons[j]), c))
-  of nkGenericParams: 
-    for i in countup(0, sonsLen(n) - 1): 
-      var a = n.sons[i]
-      if (a.kind != nkIdentDefs): IllFormedAst(a)
-      checkMinSonsLen(a, 3)
-      var L = sonsLen(a)
-      a.sons[L-2] = semGenericStmt(c, a.sons[L-2], {withinTypeDesc}) 
-      # do not perform symbol lookup for default expressions 
-      for j in countup(0, L-3): 
-        addDecl(c, newSymS(skUnknown, getIdentNode(a.sons[j]), c))
-  of nkConstSection: 
-    for i in countup(0, sonsLen(n) - 1): 
-      var a = n.sons[i]
-      if a.kind == nkCommentStmt: continue 
-      if (a.kind != nkConstDef): IllFormedAst(a)
-      checkSonsLen(a, 3)
-      addDecl(c, newSymS(skUnknown, getIdentNode(a.sons[0]), c))
-      a.sons[1] = semGenericStmt(c, a.sons[1], {withinTypeDesc})
-      a.sons[2] = semGenericStmt(c, a.sons[2])
-  of nkTypeSection: 
-    for i in countup(0, sonsLen(n) - 1): 
-      var a = n.sons[i]
-      if a.kind == nkCommentStmt: continue 
-      if (a.kind != nkTypeDef): IllFormedAst(a)
-      checkSonsLen(a, 3)
-      addDecl(c, newSymS(skUnknown, getIdentNode(a.sons[0]), c))
-    for i in countup(0, sonsLen(n) - 1): 
-      var a = n.sons[i]
-      if a.kind == nkCommentStmt: continue 
-      if (a.kind != nkTypeDef): IllFormedAst(a)
-      checkSonsLen(a, 3)
-      if a.sons[1].kind != nkEmpty: 
-        openScope(c.tab)
-        a.sons[1] = semGenericStmt(c, a.sons[1])
-        a.sons[2] = semGenericStmt(c, a.sons[2], {withinTypeDesc})
-        closeScope(c.tab)
-      else: 
-        a.sons[2] = semGenericStmt(c, a.sons[2], {withinTypeDesc})
-  of nkEnumTy: 
-    checkMinSonsLen(n, 1)
-    if n.sons[0].kind != nkEmpty: 
-      n.sons[0] = semGenericStmt(c, n.sons[0], {withinTypeDesc})
-    for i in countup(1, sonsLen(n) - 1): 
-      var a: PNode
-      case n.sons[i].kind
-      of nkEnumFieldDef: a = n.sons[i].sons[0]
-      of nkIdent: a = n.sons[i]
-      else: illFormedAst(n)
-      addDeclAt(c, newSymS(skUnknown, getIdentNode(a.sons[i]), c), c.tab.tos-1)
-  of nkObjectTy, nkTupleTy: 
-    nil
-  of nkFormalParams: 
-    checkMinSonsLen(n, 1)
-    if n.sons[0].kind != nkEmpty: 
-      n.sons[0] = semGenericStmt(c, n.sons[0], {withinTypeDesc})
-    for i in countup(1, sonsLen(n) - 1): 
-      var a = n.sons[i]
-      if (a.kind != nkIdentDefs): IllFormedAst(a)
-      checkMinSonsLen(a, 3)
-      var L = sonsLen(a)
-      a.sons[L-2] = semGenericStmt(c, a.sons[L-2], {withinTypeDesc})
-      a.sons[L-1] = semGenericStmt(c, a.sons[L-1])
-      for j in countup(0, L-3): 
-        addDecl(c, newSymS(skUnknown, getIdentNode(a.sons[j]), c))
-  of nkProcDef, nkMethodDef, nkConverterDef, nkMacroDef, nkTemplateDef, 
-     nkIteratorDef, nkLambda: 
-    checkSonsLen(n, codePos + 1)
-    addDecl(c, newSymS(skUnknown, getIdentNode(n.sons[0]), c))
-    openScope(c.tab)
-    n.sons[genericParamsPos] = semGenericStmt(c, n.sons[genericParamsPos])
-    if n.sons[paramsPos].kind != nkEmpty: 
-      if n.sons[paramsPos].sons[0].kind != nkEmpty: 
-        addDecl(c, newSym(skUnknown, getIdent("result"), nil))
-      n.sons[paramsPos] = semGenericStmt(c, n.sons[paramsPos])
-    n.sons[pragmasPos] = semGenericStmt(c, n.sons[pragmasPos])
-    n.sons[codePos] = semGenericStmtScope(c, n.sons[codePos])
-    closeScope(c.tab)
-  else: 
-    for i in countup(0, sonsLen(n) - 1): 
-      result.sons[i] = semGenericStmt(c, n.sons[i], flags)
-