exper

Documentation

Index

• Variables
• func AnalysisToken(input, output string) error
• func CompareTwoFile(res, ans string)
• func GrammarAnalysis(input, output string) error
• func GrammarDeduction()
• func InitTokenSequence()
• func IsConstDef(tkSpecCode string) bool
• func RemoveLeftToken(in, out string)
• func WalkPrintToken(n int)
• func WriteFileLine(str string)
• type Token
  • func GetNextNThToken(n int) *Token
  • func GetNextToken() *Token
  • func NextToken() *Token
  • func (token *Token) String() string

Variables

var (
	TokenSequence []Token
	CurPtr        = 0
)

var SpeciesCode = map[string]string{
	"":           "",
	"integer":    "INTCON",
	"string":     "STRCON",
	"const":      "CONSTTK",
	"charc":      "CHARCON",
	"main":       "MAINTK",
	"identifier": "IDENFR",
	"return":     "RETURNTK",
	"do":         "DOTK",
	"void":       "VOIDTK",
	"for":        "FORTK",
	"scanf":      "SCANFTK",
	"int":        "INTTK",
	"else":       "ELSETK",
	"char":       "CHARTK",
	"while":      "WHILETK",
	"printf":     "PRINTFTK",
	"if":         "IFTK",
	"-":          "MINU",
	"+":          "PLUS",
	"*":          "MULT",
	"/":          "DIV",
	"<":          "LSS",
	"<=":         "LEQ",
	">":          "GRE",
	">=":         "GEQ",
	"==":         "EQL",
	"!=":         "NEQ",
	"=":          "ASSIGN",
	";":          "SEMICN",
	",":          "COMMA",
	"(":          "LPARENT",
	")":          "RPARENT",
	"[":          "LBRACK",
	"]":          "RBRACK",
	"{":          "LBRACE",
	"}":          "RBRACE",
}

Functions

func AnalysisToken

func AnalysisToken(input, output string) error

func CompareTwoFile

func CompareTwoFile(res, ans string)

func GrammarAnalysis

func GrammarAnalysis(input, output string) error

func GrammarDeduction

func GrammarDeduction()

func InitTokenSequence

func InitTokenSequence()

func IsConstDef

func IsConstDef(tkSpecCode string) bool

tkSpecCode == "IDENFR" ||
tkSpecCode == "INTCON" ||
tkSpecCode == "CHARCON" ||
tkSpecCode == "INTTK" ||
tkSpecCode =="CHARTK" ||
tkSpecCode == "ASSIGN" ||
tkSpecCode == "COMMA"  ||
tkSpecCode == "MINUS" ||
tkSpecCode == "PLUS"

检查标识符重复错误 只输出，不检查语法，不分析语法错误

func RemoveLeftToken

func RemoveLeftToken(in, out string)

func WalkPrintToken

func WalkPrintToken(n int)

func WriteFileLine

func WriteFileLine(str string)

Types

type Token

type Token struct {
	SpeciesCode string
	Value       string
}

func GetNextNThToken

func GetNextNThToken(n int) *Token

func GetNextToken

func GetNextToken() *Token

func NextToken

func NextToken() *Token

func (*Token) String

func (token *Token) String() string