Intermediate Code (part 4/4)

1. CSE340 - Principles of
Programming Languages
Lecture 23:
Intermediate Code IV
Javier Gonzalez-Sanchez
BYENG M1-38
Office Hours: By appointment

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Code
WHILE

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Code

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Code
IF

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Code

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Review
Programming Assignment 4
Level 3
Bonus Points: SWITCH

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Homework
Translate this source code to intermediate code:
int a;
switch (a) {
case 1: { print("hi”); break;}
case 2: { print("world"); break;}
default: { print(”end"); break;}
}

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Handwritten notes
Add the symbol table here…

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Homework
Assignment #4

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High-Level Languages
X,E,G,O,O
#e1,I,I,0,7
@
OPR 19, AX
STO x, AX
LIT 5, AX
OPR 21, AX
LOD #e1,AX
CAL 1, AX
OPR 0, AX
5
Virtual Machine
(interpreter)
// sorce code
int x;
int foo () {
read (x);
print (5);
}
main () {
foo ();
}
Lexer
Parser
Semantic Analyzer
Code Generation
01001010101000010
01010100101010010
10100100000011011
11010010110101111
00010010101010010
10101001010101011
Assembler
compilation execution

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Language Paradigms

12. CSE340 - Principles of Programming Languages
Javier Gonzalez-Sanchez
javiergs@asu.edu
Summer 2015
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