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#
#
# The Nimrod Compiler
# (c) Copyright 2009 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
type
TSpecialWord* = enum
wInvalid, # these are mapped to Nimrod keywords:
#[[[cog
#from string import split, capitalize
#keywords = split(open("data/keywords.txt").read())
#idents = ""
#strings = ""
#i = 1
#for k in keywords:
# idents = idents + "w" + capitalize(k) + ", "
# strings = strings + "'" + k + "', "
# if i % 4 == 0:
# idents = idents + "\n"
# strings = strings + "\n"
# i = i + 1
#cog.out(idents)
#]]]
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, #[[[end]]]
# other special tokens:
wColon, wEquals, wDot, wDotDot, wHat, wStar, wMinus, # pragmas and command line options:
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, #
# commands:
wCompileToC, wCompileToCpp, wCompileToEcmaScript, wCompileToLLVM, wPretty,
wDoc, wPas, wGenDepend, wListDef, wCheck, wParse, wScan, wBoot, wLazy,
wRst2html, wRst2tex, wI, # special for the preprocessor of configuration files:
wWrite, wPutEnv, wPrependEnv, wAppendEnv, # additional Pascal keywords:
wArray, wBegin, wClass, wConstructor, wDestructor, wDo, wDownto, wExports,
wFinalization, wFunction, wGoto, wImplementation, wInherited,
wInitialization, wInterface, wLabel, wLibrary, wPacked, wProcedure,
wProgram, wProperty, wRecord, wRepeat, wResourcestring, wSet, wThen,
wThreadvar, wTo, wUnit, wUntil, wUses, # Pascal special tokens:
wExternal, wOverload, wFar, wAssembler, wForward, wIfdef, wIfndef, wEndif
TSpecialWords* = set[TSpecialWord]
const
oprLow* = ord(wColon)
oprHigh* = ord(wHat)
specialWords*: array[low(TSpecialWord)..high(TSpecialWord), string] = ["", #
# keywords:
#
#[[[cog
#
#cog.out(strings)
#]]]
"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", #[[[end]]]
# other special tokens:
":", "=", ".", "..", "^", "*", "-", # pragmas and command line options:
"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", # commands:
"compiletoc", "compiletocpp", "compiletoecmascript", "compiletollvm",
"pretty", "doc", "pas", "gendepend", "listdef", "check", "parse", "scan",
"boot", "lazy", "rst2html", "rst2tex", "i", # special for the preprocessor of configuration files:
"write", "putenv", "prependenv", "appendenv", "array", "begin", "class",
"constructor", "destructor", "do", "downto", "exports", "finalization",
"function", "goto", "implementation", "inherited", "initialization",
"interface", "label", "library", "packed", "procedure", "program",
"property", "record", "repeat", "resourcestring", "set", "then",
"threadvar", "to", "unit", "until", "uses", # Pascal special tokens
"external", "overload", "far", "assembler", "forward", "ifdef", "ifndef",
"endif"]
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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