Homework Programming Language Processor Class Really Need Help Codes Thank Much Figure 1 H Q43828114
Homework from Programming Language Processor class… I really needhelp with the codes Thank you very much!
This is figure 1.
hint:
Question 2 Answer the following questions to add the following repeat-until statement to PL/0. Production rule statement + repeat statement until condition Action A statement ‘repeat statement until condition’ works as follows. 1. Execute statement. 2. If the value of condition is false, go to the step 1. Otherwise, exit this loop. Question 2-1 Write object codes for the repeat-until statement like object codes for the do-while statement of Fig.1. Question 2-2 Modify getSource.h and getSource.c to register two tokens repeat and until to your PL/O’compiler. Explain the modification in your report, labell: Object codes of statement Object codes of condition jpc label2 jmp labeli label2: Figure 1: Object codes for a do-while statement Statement then statemene Statement – if rendition Statement it condition do | Stutcmene while – condition Statement – repent statement then statement centile condition staterberg else statement – condition then – Statement y aller fotien port is 課題1 構文図式の書き方 uest 終端記号と非終端記号の区別 False ntrod tions do statement while condition luct ni 終端記号と非終端記号を丸と四角をつかって区別しましょう。 1 構文図式での空列もの表現 TRU A Grammar to a Recursive Descendent Parser (1/4) (1) We combine production rules A→y, Aa, …, Aan into a production rule A ala, … an. We describe a{ba} as {a//B}. (2) We translate each combined rule A-a into a procedure A(). void A() { – T(a) TO) is a procedure which translates a symbol sequence a into procedures. Show transcribed image text Question 2 Answer the following questions to add the following repeat-until statement to PL/0. Production rule statement + repeat statement until condition Action A statement ‘repeat statement until condition’ works as follows. 1. Execute statement. 2. If the value of condition is false, go to the step 1. Otherwise, exit this loop. Question 2-1 Write object codes for the repeat-until statement like object codes for the do-while statement of Fig.1. Question 2-2 Modify getSource.h and getSource.c to register two tokens repeat and until to your PL/O’compiler. Explain the modification in your report,
labell: Object codes of statement Object codes of condition jpc label2 jmp labeli label2: Figure 1: Object codes for a do-while statement
Statement then statemene Statement – if rendition Statement it condition do | Stutcmene while – condition Statement – repent statement then statement centile condition staterberg else statement – condition then – Statement y aller fotien
port is 課題1 構文図式の書き方 uest 終端記号と非終端記号の区別 False ntrod tions do statement while condition luct ni 終端記号と非終端記号を丸と四角をつかって区別しましょう。 1 構文図式での空列もの表現 TRU
A Grammar to a Recursive Descendent Parser (1/4) (1) We combine production rules A→y, Aa, …, Aan into a production rule A ala, … an. We describe a{ba} as {a//B}. (2) We translate each combined rule A-a into a procedure A(). void A() { – T(a) TO) is a procedure which translates a symbol sequence a into procedures.
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