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Compilers
Lecture 07:
Lexer Deployment
Dr. Javier Gonzalez-Sanchez
jgonzalezs@up.edu.mx
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Announcements
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Do not forget
2 students without GitHub Classroom
2 teams without trying a submission
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Exam 01
Tuesday Feb 18 (5 to 6.30 pm)
Blackboard – Online but Synchronous
No lecture; solve your exam.
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Previously …
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Github Classroom
https://classroom.github.com/a/CqP1SIpv
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One Last Thing
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Step 10
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Class Lexer
B,b 0 1 ..
.
Delimiter,
operator,
whitespace,
quotation mark
S0
SE S1
SE
SE
Stop
S1 S2
SE
SE
SE
Stop
S2
SE S3 S3
SE
Stop
S3
SE S3 S3
SE
Stop
SE
SE
SE
SE
SE
Stop
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Test
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Test Yourselves
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Review | Lexical Analysis
Are the following STRINGS correct or not? Why?
▪ 000000005
▪ 000000009
▪ 000000009.1
▪ 000000005
▪ 000000005.1
▪ 0x0000002
▪ 0123456789
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Review | Lexical Analysis
Are the following STRINGS correct or not? Why?
▪ 1.2e---3++
▪ $50
▪ float ________________ = 5;
▪ double x = 000000.1;
▪ '''a'
▪ '\''b'
▪ '\'b'
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Review | Lexical Analysis
Are the following STRINGS correct or not? Why?
▪ " \\\\\\\\\\a"
▪ "Hello""world"
▪ abc"Hello"
▪ ''’
▪ '\x’
▪ ’\a'
▪ ’\w’
▪ "\\\"
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Questions
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Compilers
Javier Gonzalez-Sanchez, Ph.D.
jgonzalezs@up.edu.mx
Spring 2025
Copyright. These slides can only be used as study material for the Compilers course at Universidad Panamericana.
They cannot be distributed or used for another purpose.