GATE Overflow | Compiler Design | Test 1 | Parsing | Question: 12

Question

Which of the following statements regarding LR parsers is WRONG?

1. LR(1) does no guess work
2. LR parsers can handle a large range of grammars than predictive parsers
3. LR parsers can handle a large range of languages than predictive parsers
4. LR parser is better at error reporting compared to LL ones
    
   • A. Only (i)
   • B. (i) and (iv)
   • C. Only (iv)
   • D. All are CORRECT

Comments

@Arjun

Sir, we know that LR parsers are more powerful than LL ones, we can say that LR has more error detecting capabilities then LL ones.So i think IV should be right...plz correct me

---

Yes

---

then D cannot be correct here...

---

Why?

---

Sir, because IV statement is right...??

---

All the 4 are right

---

operator precedence can parse ambiguous ones too, So it should handle more range then LR ones. ??

---

Sorry. It is predictive and not precedence. Corrected now.

---

Now I m agreed with D...thanx for being with me..

---

just a silly doubt...ALL ARE CORRECT means "all options are TRUE and no option is wrong" ?

if question was " Which of the following statements regarding LR parsers is CORRECT"?

then also we will select option D ?

---

Yes, we have to. That's why they mention "Choose the MOST appropriate answer".