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jflex's Introduction

JFLEX

A simple lexical analyzer for C

Installation

Install jflex.

Usage

jflex lexical.jflex

That will create a java file named LexicalAnalyzer (you can change it in the jflex file)

javac LexicalAnalyzer.java

That will create a LexicalAnalyzer.class

java LexicalAnalyzer entrada.txt

With this command you can run the class and the file. It will show in your terminal line by line of the lexical analyzer.

Scope methods has been added
[ID 0, Scope 0, Subscope 0,"main"]
<stdio.h> library will be imported
<stdio.h> library scope has been added
[ID 1, Scope 1, Subscope 0, "printf"] 
[ID 2, Scope 1, Subscope 0, "scanf"] 
<stdio.h> library scope has been imported
<conio.h> library will be imported
<conio.h> library scope has been added
[ID 3, Scope 2, Subscope 0, "clrscr"] 
[ID 4, Scope 2, Subscope 0, "getch"] 
<conio.h> library scope has been imported
[reserved_word, void]
[ID 5, Scope 0, Subscope 0, CalculoMedia]
[L_Paren, (]
[R_Paren, )]
[L_Brace, {]
[reserved_word, float]
[ID 6, Scope 3, Subscope 0, NotaDaP1]
[Comma, ,]
[ID 7, Scope 3, Subscope 0, NotaDaP2]
[Semicolon, ;]
[reserved_word, float]
[ID 8, Scope 3, Subscope 0, Media]
[Semicolon, ;]
[ID 9, Scope 3, Subscope 0, clrscr]
[L_Paren, (]
[R_Paren, )]
[Semicolon, ;]
[ID 6, Scope 3, Subscope 0, NotaDaP1]
[Equal, =]
[num, 6.6]
[Semicolon, ;]
[ID 7, Scope 3, Subscope 0, NotaDaP2]
[Equal, =]
[num, 8.2]
[Semicolon, ;]
[ID 8, Scope 3, Subscope 0, Media]
[Equal, =]
[L_Paren, (]
[ID 6, Scope 3, Subscope 0, NotaDaP1]
[Arith_Op: +]
[ID 7, Scope 3, Subscope 0, NotaDaP2]
[R_Paren, )]
[Arith_Op: /]
[num, 2.0]
[Semicolon, ;]
[ID 10, Scope 3, Subscope 0, printf]
[L_Paren, (]
[String_literal, "Média Final : %6.3f"]
[Comma, ,]
[ID 8, Scope 3, Subscope 0, Media]
[R_Paren, )]
[Semicolon, ;]
[ID 4, Scope 2, Subscope 0, getch]
[L_Paren, (]
[R_Paren, )]
[Semicolon, ;]
[R_Brace, }]
[reserved_word, int]
[ID 11, Scope 0, Subscope 0, VerificaNumero]
[L_Paren, (]
[R_Paren, )]
[L_Brace, {]
[reserved_word, int]
[ID 12, Scope 4, Subscope 0, num]
[Semicolon, ;]
[reserved_word, string]
[ID 13, Scope 4, Subscope 0, s]
[Semicolon, ;]
[ID 14, Scope 4, Subscope 0, printf]
[L_Paren, (]
[String_literal, "Digite um número: "]
[R_Paren, )]
[Semicolon, ;]
[ID 2, Scope 1, Subscope 0, scanf]
[L_Paren, (]
[String_literal, "%d"]
[Comma, ,]
[Address, &]
[ID 12, Scope 4, Subscope 0, num]
[R_Paren, )]
[Semicolon, ;]
[reserved_word, if]
[L_Paren, (]
[ID 12, Scope 4, Subscope 0, num]
[Relational_Op, >]
[num, 10]
[R_Paren, )]
[L_Brace, {]
[ID 14, Scope 4, Subscope 0, printf]
[L_Paren, (]
[String_literal, "\n\n O número é maior que 10"]
[R_Paren, )]
[Semicolon, ;]
[ID 13, Scope 4, Subscope 0, s]
[Equal, =]
[String_literal, "errou"]
[Semicolon, ;]
[R_Brace, }]
[reserved_word, if]
[L_Paren, (]
[ID 12, Scope 4, Subscope 0, num]
[Relational_Op, ==]
[num, 10]
[R_Paren, )]
[L_Brace, {]
[ID 14, Scope 4, Subscope 0, printf]
[L_Paren, (]
[String_literal, "\n\n Você acertou!\n"]
[R_Paren, )]
[Semicolon, ;]
[ID 14, Scope 4, Subscope 0, printf]
[L_Paren, (]
[String_literal, "O numero é igual a 10."]
[R_Paren, )]
[Semicolon, ;]
[ID 13, Scope 4, Subscope 0, s]
[Equal, =]
[String_literal, "acertou"]
[Semicolon, ;]
[R_Brace, }]
[reserved_word, if]
[L_Paren, (]
[ID 12, Scope 4, Subscope 0, num]
[Relational_Op, <]
[num, 10]
[R_Paren, )]
[L_Brace, {]
[ID 14, Scope 4, Subscope 0, printf]
[L_Paren, (]
[String_literal, "\n\n O número é menor que 10"]
[R_Paren, )]
[Semicolon, ;]
[ID 13, Scope 4, Subscope 0, s]
[Equal, =]
[String_literal, "errou"]
[Semicolon, ;]
[R_Brace, }]
[reserved_word, if]
[L_Paren, (]
[ID 12, Scope 4, Subscope 0, num]
[Relational_Op, ==]
[num, 10]
[Logic_Op, &&]
[ID 13, Scope 4, Subscope 0, s]
[Relational_Op, ==]
[String_literal, "acertou"]
[R_Paren, )]
[L_Brace, {]
[reserved_word, return]
[num, 1]
[Semicolon, ;]
[R_Brace, }]
[reserved_word, return]
[num, 0]
[Semicolon, ;]
[R_Brace, }]
[reserved_word, void]
[ID 15, Scope 0, Subscope 0, AlterarVetor]
[L_Paren, (]
[reserved_word, int]
[Pointer, *]
[ID 16, Scope 5, Subscope 0, vetor]
[Comma, ,]
[reserved_word, int]
[ID 17, Scope 5, Subscope 0, elementos]
[R_Paren, )]
[L_Brace, {]
[reserved_word, int]
[ID 18, Scope 5, Subscope 0, i]
[Semicolon, ;]
[reserved_word, if]
[L_Paren, (]
[ID 16, Scope 5, Subscope 0, vetor]
[Relational_Op, !=]
[reserved_word, NULL]
[R_Paren, )]
[L_Brace, {]
[reserved_word, for]
[L_Paren, (]
[ID 18, Scope 5, Subscope 0, i]
[Equal, =]
[num, 0]
[Semicolon, ;]
[ID 18, Scope 5, Subscope 0, i]
[Relational_Op, <]
[ID 17, Scope 5, Subscope 0, elementos]
[Semicolon, ;]
[ID 18, Scope 5, Subscope 0, i]
[Inc_Op, ++]
[R_Paren, )]
[L_Brace, {]
[Pointer, *]
[L_Paren, (]
[ID 16, Scope 5, Subscope 0, vetor]
[R_Paren, )]
[Equal, =]
[Pointer, *]
[L_Paren, (]
[ID 16, Scope 5, Subscope 0, vetor]
[R_Paren, )]
[Arith_Op: *]
[num, 2]
[Semicolon, ;]
[ID 16, Scope 5, Subscope 0, vetor]
[Inc_Op, ++]
[Semicolon, ;]
[R_Brace, }]
[R_Brace, }]
[R_Brace, }]
[reserved_word, int]
[ID 0, Scope 0, Subscope 0, main]
[L_Paren, (]
[R_Paren, )]
[L_Brace, {]
[reserved_word, int]
[ID 19, Scope 6, Subscope 0, v]
[L_Bracket, []
[R_Bracket, ]]
[Equal, =]
[L_Brace, {]
[num, 5]
[Comma, ,]
[num, 10]
[Comma, ,]
[num, 15]
[Comma, ,]
[num, 3]
[Comma, ,]
[num, 10]
[Comma, ,]
[num, 76]
[Comma, ,]
[num, 5]
[Comma, ,]
[num, 13]
[Comma, ,]
[num, 33]
[Comma, ,]
[num, 45]
[R_Brace, }]
[Semicolon, ;]
[reserved_word, int]
[Pointer, *]
[ID 20, Scope 6, Subscope 0, pt]
[Semicolon, ;]
[reserved_word, int]
[ID 21, Scope 6, Subscope 0, i]
[Semicolon, ;]
[ID 20, Scope 6, Subscope 0, pt]
[Equal, =]
[ID 19, Scope 6, Subscope 0, v]
[Semicolon, ;]
[ID 15, Scope 0, Subscope 0, AlterarVetor]
[L_Paren, (]
[ID 19, Scope 6, Subscope 0, v]
[Comma, ,]
[num, 10]
[R_Paren, )]
[Semicolon, ;]
[reserved_word, for]
[L_Paren, (]
[reserved_word, int]
[ID 22, Scope 6, Subscope 1, i]
[Equal, =]
[num, 0]
[Semicolon, ;]
[ID 22, Scope 6, Subscope 1, i]
[Relational_Op, <]
[num, 10]
[Semicolon, ;]
[ID 22, Scope 6, Subscope 1, i]
[Inc_Op, ++]
[R_Paren, )]
[L_Brace, {]
[ID 23, Scope 6, Subscope 1, printf]
[L_Paren, (]
[String_literal, "V[%i] = %i\r\n"]
[Comma, ,]
[ID 22, Scope 6, Subscope 1, i]
[Comma, ,]
[Pointer, *]
[L_Paren, (]
[ID 20, Scope 6, Subscope 0, pt]
[Arith_Op: +]
[ID 22, Scope 6, Subscope 1, i]
[R_Paren, )]
[R_Paren, )]
[Semicolon, ;]
[R_Brace, }]
[ID 5, Scope 0, Subscope 0, CalculoMedia]
[L_Paren, (]
[R_Paren, )]
[Semicolon, ;]
[ID 11, Scope 0, Subscope 0, VerificaNumero]
[L_Paren, (]
[R_Paren, )]
[Semicolon, ;]
[reserved_word, return]
[num, 0]
[Semicolon, ;]
[R_Brace, }]

Obs

You can change the txt file for your file locally

jflex's People

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