Lexical Analysis

Role in Compilation Process

Interface with Parser

Token Stream Generation

Error Handling Responsibilities

Tokens

Patterns

Lexemes

Token Attributes

Token Classification

Input Buffering Schemes

Buffer Pairs

Sentinels

Lookahead Mechanisms

Character Encoding Issues

Regular Expression Patterns

Keyword Recognition

Identifier Patterns

Numeric Literals

String Literals

Operators and Delimiters

Comments and Whitespace

Transition Diagrams

Finite Automata Implementation

Direct Coding Approaches

Table-Driven Approaches

Lex Tool

Flex Tool

Specification Syntax

Action Code Integration

Generated Code Structure

Reserved Word Handling

Case Sensitivity

Nested Comments

String Escape Sequences

Macro Expansion

Error Detection Strategies

Error Recovery Techniques

Error Reporting Mechanisms

Invalid Character Handling