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refactorings to prepare the compiler for IC (#15935)

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* added ic specific Nim code; WIP
* make the symbol import mechanism lazy; WIP
* ensure that modules can be imported multiple times
* ambiguity checking
* handle converters and TR macros properly
* make 'enum' test category green again
* special logic for semi-pure enums
* makes nimsuggest tests green again
* fixes nimdata
* makes nimpy green again
* makes more important packages work
This commit is contained in:
Andreas Rumpf 2020-12-17 08:01:36 +01:00 • committed by GitHub
commit 979148e863
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26 changed files with 1241 additions and 178 deletions
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8
compiler/sem.nim
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@ -522,8 +522,10 @@ proc myOpen(graph: ModuleGraph; module: PSym; idgen: IdGenerator): PPassContext
pushProcCon(c, module)
pushOwner(c, c.module)
c.importTable = openScope(c)
c.importTable.addSym(module) # a module knows itself
c.moduleScope = openScope(c)
c.moduleScope.addSym(module) # a module knows itself
if sfSystemModule in module.flags:
graph.systemModule = module
c.topLevelScope = openScope(c)
@ -557,7 +559,7 @@ proc isEmptyTree(n: PNode): bool =
proc semStmtAndGenerateGenerics(c: PContext, n: PNode): PNode =
if c.topStmts == 0 and not isImportSystemStmt(c.graph, n):
if sfSystemModule notin c.module.flags and not isEmptyTree(n):
c.importTable.addSym c.graph.systemModule # import the "System" identifier
c.moduleScope.addSym c.graph.systemModule # import the "System" identifier
importAllSymbols(c, c.graph.systemModule)
inc c.topStmts
else: