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#
#
# The Nim Compiler
# (c) Copyright 2012 Andreas Rumpf
#
# See the file "copying.txt", included in this
# distribution, for details about the copyright.
#
# Built-in types and compilerprocs are registered here.
import
ast, astalgo, msgs, platform, idents,
modulegraphs, lineinfos
export createMagic
proc nilOrSysInt*(g: ModuleGraph): PType = g.sysTypes[tyInt]
proc registerSysType*(g: ModuleGraph; t: PType) =
if g.sysTypes[t.kind] == nil: g.sysTypes[t.kind] = t
proc newSysType(g: ModuleGraph; kind: TTypeKind, size: int): PType =
result = newType(kind, g.systemModule)
result.size = size
result.align = size.int16
proc getSysSym*(g: ModuleGraph; info: TLineInfo; name: string): PSym =
result = strTableGet(g.systemModule.tab, getIdent(g.cache, name))
if result == nil:
localError(g.config, info, "system module needs: " & name)
result = newSym(skError, getIdent(g.cache, name), g.systemModule, g.systemModule.info, {})
result.typ = newType(tyError, g.systemModule)
if result.kind == skAlias: result = result.owner
proc getSysMagic*(g: ModuleGraph; info: TLineInfo; name: string, m: TMagic): PSym =
var ti: TIdentIter
let id = getIdent(g.cache, name)
var r = initIdentIter(ti, g.systemModule.tab, id)
while r != nil:
if r.magic == m:
# prefer the tyInt variant:
if r.typ[0] != nil and r.typ[0].kind == tyInt: return r
result = r
r = nextIdentIter(ti, g.systemModule.tab)
if result != nil: return result
localError(g.config, info, "system module needs: " & name)
result = newSym(skError, id, g.systemModule, g.systemModule.info, {})
result.typ = newType(tyError, g.systemModule)
proc sysTypeFromName*(g: ModuleGraph; info: TLineInfo; name: string): PType =
result = getSysSym(g, info, name).typ
proc getSysType*(g: ModuleGraph; info: TLineInfo; kind: TTypeKind): PType =
template sysTypeFromName(s: string): untyped = sysTypeFromName(g, info, s)
result = g.sysTypes[kind]
if result == nil:
case kind
of tyInt: result = sysTypeFromName("int")
of tyInt8: result = sysTypeFromName("int8")
of tyInt16: result = sysTypeFromName("int16")
of tyInt32: result = sysTypeFromName("int32")
of tyInt64: result = sysTypeFromName("int64")
of tyUInt: result = sysTypeFromName("uint")
of tyUInt8: result = sysTypeFromName("uint8")
of tyUInt16: result = sysTypeFromName("uint16")
of tyUInt32: result = sysTypeFromName("uint32")
of tyUInt64: result = sysTypeFromName("uint64")
of tyFloat: result = sysTypeFromName("float")
of tyFloat32: result = sysTypeFromName("float32")
of tyFloat64: result = sysTypeFromName("float64")
of tyFloat128: result = sysTypeFromName("float128")
of tyBool: result = sysTypeFromName("bool")
of tyChar: result = sysTypeFromName("char")
of tyString: result = sysTypeFromName("string")
of tyCString: result = sysTypeFromName("cstring")
of tyPointer: result = sysTypeFromName("pointer")
of tyNil: result = newSysType(g, tyNil, g.config.target.ptrSize)
else: internalError(g.config, "request for typekind: " & $kind)
g.sysTypes[kind] = result
if result.kind != kind:
if kind == tyFloat64 and result.kind == tyFloat: discard # because of aliasing
else:
internalError(g.config, "wanted: " & $kind & " got: " & $result.kind)
if result == nil: internalError(g.config, "type not found: " & $kind)
proc resetSysTypes*(g: ModuleGraph) =
g.systemModule = nil
initStrTable(g.compilerprocs)
initStrTable(g.exposed)
for i in low(g.sysTypes)..high(g.sysTypes):
g.sysTypes[i] = nil
for i in low(g.intTypeCache)..high(g.intTypeCache):
g.intTypeCache[i] = nil
proc getIntLitType*(g: ModuleGraph; literal: PNode): PType =
# we cache some common integer literal types for performance:
let value = literal.intVal
if value >= low(g.intTypeCache) and value <= high(g.intTypeCache):
result = g.intTypeCache[value.int]
if result == nil:
let ti = getSysType(g, literal.info, tyInt)
result = copyType(ti, ti.owner, false)
result.n = literal
g.intTypeCache[value.int] = result
else:
let ti = getSysType(g, literal.info, tyInt)
result = copyType(ti, ti.owner, false)
result.n = literal
proc getFloatLitType*(g: ModuleGraph; literal: PNode): PType =
# for now we do not cache these:
result = newSysType(g, tyFloat, size=8)
result.n = literal
proc skipIntLit*(t: PType): PType {.inline.} =
if t.n != nil and t.kind in {tyInt, tyFloat}:
result = copyType(t, t.owner, false)
result.n = nil
else:
result = t
proc addSonSkipIntLit*(father, son: PType) =
when not defined(nimNoNilSeqs):
if isNil(father.sons): father.sons = @[]
let s = son.skipIntLit
father.sons.add(s)
propagateToOwner(father, s)
proc setIntLitType*(g: ModuleGraph; result: PNode) =
let i = result.intVal
case g.config.target.intSize
of 8: result.typ = getIntLitType(g, result)
of 4:
if i >= low(int32) and i <= high(int32):
result.typ = getIntLitType(g, result)
else:
result.typ = getSysType(g, result.info, tyInt64)
of 2:
if i >= low(int16) and i <= high(int16):
result.typ = getIntLitType(g, result)
elif i >= low(int32) and i <= high(int32):
result.typ = getSysType(g, result.info, tyInt32)
else:
result.typ = getSysType(g, result.info, tyInt64)
of 1:
# 8 bit CPUs are insane ...
if i >= low(int8) and i <= high(int8):
result.typ = getIntLitType(g, result)
elif i >= low(int16) and i <= high(int16):
result.typ = getSysType(g, result.info, tyInt16)
elif i >= low(int32) and i <= high(int32):
result.typ = getSysType(g, result.info, tyInt32)
else:
result.typ = getSysType(g, result.info, tyInt64)
else:
internalError(g.config, result.info, "invalid int size")
proc getCompilerProc*(g: ModuleGraph; name: string): PSym =
let ident = getIdent(g.cache, name)
result = strTableGet(g.compilerprocs, ident)
proc registerCompilerProc*(g: ModuleGraph; s: PSym) =
strTableAdd(g.compilerprocs, s)
proc registerNimScriptSymbol*(g: ModuleGraph; s: PSym) =
# Nimscript symbols must be al unique:
let conflict = strTableGet(g.exposed, s.name)
if conflict == nil:
strTableAdd(g.exposed, s)
else:
localError(g.config, s.info,
"symbol conflicts with other .exportNims symbol at: " & g.config$conflict.info)
proc getNimScriptSymbol*(g: ModuleGraph; name: string): PSym =
strTableGet(g.exposed, getIdent(g.cache, name))
proc resetNimScriptSymbols*(g: ModuleGraph) = initStrTable(g.exposed)
proc getMagicEqSymForType*(g: ModuleGraph; t: PType; info: TLineInfo): PSym =
case t.kind
of tyInt, tyInt8, tyInt16, tyInt32, tyInt64,
tyUInt, tyUInt8, tyUInt16, tyUInt32, tyUInt64:
result = getSysMagic(g, info, "==", mEqI)
of tyEnum:
result = getSysMagic(g, info, "==", mEqEnum)
of tyBool:
result = getSysMagic(g, info, "==", mEqB)
of tyRef, tyPtr, tyPointer:
result = getSysMagic(g, info, "==", mEqRef)
of tyString:
result = getSysMagic(g, info, "==", mEqStr)
of tyChar:
result = getSysMagic(g, info, "==", mEqCh)
of tySet:
result = getSysMagic(g, info, "==", mEqSet)
of tyProc:
result = getSysMagic(g, info, "==", mEqProc)
else:
globalError(g.config, info,
"can't find magic equals operator for type kind " & $t.kind)
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