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borrow checking (#15282)

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* refactoring: move procs to typeallowed.nim
* frontend preparations for first class openArray support
* prepare the code generator for first class openArray
* code generation for first class openArray; WIP
* code generation for open arrays, progress
* added isViewType proc
* preparations for borrow checking
* added borrow checking to the front end
This commit is contained in:
Andreas Rumpf 2020-09-09 07:32:03 +02:00 • committed by GitHub
commit 10988d4840
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18 changed files with 554 additions and 311 deletions
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10
compiler/sem.nim
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@ -17,7 +17,7 @@ import
intsets, transf, vmdef, vm, idgen, aliases, cgmeth, lambdalifting,
evaltempl, patterns, parampatterns, sempass2, linter, semmacrosanity,
lowerings, plugins/active, rod, lineinfos, strtabs, int128,
isolation_check
isolation_check, typeallowed
from modulegraphs import ModuleGraph, PPassContext, onUse, onDef, onDefResolveForward
@ -228,9 +228,9 @@ proc semIdentVis(c: PContext, kind: TSymKind, n: PNode,
proc semIdentWithPragma(c: PContext, kind: TSymKind, n: PNode,
allowed: TSymFlags): PSym
proc typeAllowedCheck(conf: ConfigRef; info: TLineInfo; typ: PType; kind: TSymKind;
proc typeAllowedCheck(c: PContext; info: TLineInfo; typ: PType; kind: TSymKind;
flags: TTypeAllowedFlags = {}) =
let t = typeAllowed(typ, kind, flags)
let t = typeAllowed(typ, kind, c, flags)
if t != nil:
var err: string
if t == typ:
@ -240,10 +240,10 @@ proc typeAllowedCheck(conf: ConfigRef; info: TLineInfo; typ: PType; kind: TSymKi
else:
err = "invalid type: '$1' in this context: '$2' for $3" % [typeToString(t),
typeToString(typ), toHumanStr(kind)]
localError(conf, info, err)
localError(c.config, info, err)
proc paramsTypeCheck(c: PContext, typ: PType) {.inline.} =
typeAllowedCheck(c.config, typ.n.info, typ, skProc)
typeAllowedCheck(c, typ.n.info, typ, skProc)
proc expectMacroOrTemplateCall(c: PContext, n: PNode): PSym
proc semDirectOp(c: PContext, n: PNode, flags: TExprFlags): PNode