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#
#
# The Nimrod Compiler
# (c) Copyright 2010 Andreas Rumpf
#
# See the file "copying.txt", included in this
# distribution, for details about the copyright.
#
# This module contains a word recognizer, i.e. a simple
# procedure which maps special words to an enumeration.
# It is primarily needed because Pascal's case statement
# does not support strings. Without this the code would
# be slow and unreadable.
import
nhashes, strutils, idents
# Keywords must be kept sorted and within a range
type
TSpecialWord* = enum
wInvalid,
wAddr, wAnd, wAs, wAsm, wBind, wBlock, wBreak, wCase, wCast, wConst,
wContinue, wConverter, wDiscard, wDistinct, wDiv, wElif, wElse, wEnd, wEnum,
wExcept, wFinally, wFor, wFrom, wGeneric, wIf, wImplies, wImport, wIn,
wInclude, wIs, wIsnot, wIterator, wLambda, wMacro, wMethod, wMod, wNil,
wNot, wNotin, wObject, wOf, wOr, wOut, wProc, wPtr, wRaise, wRef, wReturn,
wShl, wShr, wTemplate, wTry, wTuple, wType, wVar, wWhen, wWhile, wWith,
wWithout, wXor, wYield,
wColon, wEquals, wDot, wDotDot, wHat, wStar, wMinus,
wMagic, wTypeCheck, wFinal, wProfiler, wObjChecks, wImportc, wExportc,
wAlign, wNodecl, wPure, wVolatile, wRegister, wSideeffect, wHeader,
wNosideeffect, wNoreturn, wMerge, wLib, wDynlib, wCompilerproc, wProcVar,
wFatal, wError, wWarning, wHint, wLine, wPush, wPop, wDefine, wUndef,
wLinedir, wStacktrace, wLinetrace, wParallelBuild, wLink, wCompile,
wLinksys, wDeprecated, wVarargs, wByref, wCallconv, wBreakpoint, wDebugger,
wNimcall, wStdcall, wCdecl, wSafecall, wSyscall, wInline, wNoInline,
wFastcall, wClosure, wNoconv, wOn, wOff, wChecks, wRangechecks,
wBoundchecks, wOverflowchecks, wNilchecks,
wFloatchecks, wNanChecks, wInfChecks,
wAssertions, wWarnings, wW,
wHints, wOptimization, wSpeed, wSize, wNone, wPath, wP, wD, wU, wDebuginfo,
wCompileonly, wNolinking, wForcebuild, wF, wDeadCodeElim, wSafecode,
wCompileTime, wGc, wRefc, wBoehm, wA, wOpt, wO, wApp, wConsole, wGui,
wPassc, wT, wPassl, wL, wListcmd, wGendoc, wGenmapping, wOs, wCpu,
wGenerate, wG, wC, wCpp, wBorrow, wRun, wR, wVerbosity, wV, wHelp, wH,
wSymbolFiles, wFieldChecks, wX, wVersion, wAdvanced, wSkipcfg, wSkipProjCfg,
wCc, wGenscript, wCheckPoint, wCheckPoints, wNoMain, wSubsChar,
wAcyclic, wIndex,
wCompileToC, wCompileToCpp, wCompileToEcmaScript, wCompileToLLVM, wPretty,
wDoc, wPas, wGenDepend, wListDef, wCheck, wParse, wScan, wBoot, wLazy,
wRst2html, wRst2tex, wI,
wWrite, wPutEnv, wPrependEnv, wAppendEnv, wThreadVar
TSpecialWords* = set[TSpecialWord]
const
oprLow* = ord(wColon)
oprHigh* = ord(wHat)
specialWords*: array[low(TSpecialWord)..high(TSpecialWord), string] = ["",
"addr", "and", "as", "asm", "bind", "block", "break", "case", "cast",
"const", "continue", "converter", "discard", "distinct", "div", "elif",
"else", "end", "enum", "except", "finally", "for", "from", "generic", "if",
"implies", "import", "in", "include", "is", "isnot", "iterator", "lambda",
"macro", "method", "mod", "nil", "not", "notin", "object", "of", "or",
"out", "proc", "ptr", "raise", "ref", "return", "shl", "shr", "template",
"try", "tuple", "type", "var", "when", "while", "with", "without", "xor",
"yield",
":", "=", ".", "..", "^", "*", "-",
"magic", "typecheck", "final", "profiler", "objchecks", "importc",
"exportc", "align", "nodecl", "pure", "volatile", "register", "sideeffect",
"header", "nosideeffect", "noreturn", "merge", "lib", "dynlib",
"compilerproc", "procvar", "fatal", "error", "warning", "hint", "line",
"push", "pop", "define", "undef", "linedir", "stacktrace", "linetrace",
"parallelbuild", "link", "compile", "linksys", "deprecated", "varargs",
"byref", "callconv", "breakpoint", "debugger", "nimcall", "stdcall",
"cdecl", "safecall", "syscall", "inline", "noinline", "fastcall", "closure",
"noconv", "on", "off", "checks", "rangechecks", "boundchecks",
"overflowchecks", "nilchecks",
"floatchecks", "nanchecks", "infchecks",
"assertions", "warnings", "w", "hints",
"optimization", "speed", "size", "none", "path", "p", "d", "u", "debuginfo",
"compileonly", "nolinking", "forcebuild", "f", "deadcodeelim", "safecode",
"compiletime", "gc", "refc", "boehm", "a", "opt", "o", "app", "console",
"gui", "passc", "t", "passl", "l", "listcmd", "gendoc", "genmapping", "os",
"cpu", "generate", "g", "c", "cpp", "borrow", "run", "r", "verbosity", "v",
"help", "h", "symbolfiles", "fieldchecks", "x", "version", "advanced",
"skipcfg", "skipprojcfg", "cc", "genscript", "checkpoint", "checkpoints",
"nomain", "subschar", "acyclic", "index",
"compiletoc", "compiletocpp", "compiletoecmascript", "compiletollvm",
"pretty", "doc", "pas", "gendepend", "listdef", "check", "parse", "scan",
"boot", "lazy", "rst2html", "rst2tex", "i",
"write", "putenv", "prependenv", "appendenv", "threadvar"]
proc whichKeyword*(id: PIdent): TSpecialWord
proc whichKeyword*(id: String): TSpecialWord
proc findStr*(a: openarray[string], s: string): int
# implementation
proc findStr(a: openarray[string], s: string): int =
for i in countup(low(a), high(a)):
if cmpIgnoreStyle(a[i], s) == 0:
return i
result = - 1
proc whichKeyword(id: String): TSpecialWord =
result = whichKeyword(getIdent(id))
proc whichKeyword(id: PIdent): TSpecialWord =
if id.id < 0: result = wInvalid
else: result = TSpecialWord(id.id)
proc initSpecials() =
# initialize the keywords:
for s in countup(succ(low(specialWords)), high(specialWords)):
getIdent(specialWords[s], getNormalizedHash(specialWords[s])).id = ord(s)
initSpecials()
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