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Index Entry  Section

$ as normal character in patterns: Patterns

%array, advantages of: Matching
%array, use of: Matching
%array, with C++: Matching
%option noyywrapp: Generated Scanner
%pointer, and unput(): Actions
%pointer, use of: Matching
%top: Definitions Section
%{ and %}, in Definitions Section: Definitions Section
%{ and %}, in Rules Section: Actions

<<EOF>>, use of: EOF

[] in patterns: Patterns

^ as non-special character in patterns: Patterns

|, in actions: Actions
|, use of: Actions

accessor functions, use of: Accessor Methods
actions: Actions
actions, embedded C strings: Actions
actions, redefining YY_BREAK: Misc Macros
actions, use of { and }: Actions
aliases, how to define: Definitions Section
arguments, command-line: Scanner Options
array, default size for yytext: User Values

backing up, eliminating: Performance
backing up, eliminating by adding error rules: Performance
backing up, eliminating with catch-all rule: Performance
backing up, example of eliminating: Performance
BEGIN: Actions
BEGIN, explanation: Start Conditions
beginning of line, in patterns: Patterns
bison, bridging with flex: Bison Bridge
bison, parser: Bison Bridge
bison, scanner to be called from bison: Bison Bridge
BOL, checking the BOL flag: Misc Macros
BOL, in patterns: Patterns
BOL, setting it: Misc Macros
braces in patterns: Patterns
bugs, reporting: Reporting Bugs

C code in flex input: Definitions Section
C++: Cxx
C++ and %array: User Values
C++ I/O, customizing: How do I use my own I/O classes in a C++ scanner?
C++ scanners, including multiple scanners: Cxx
C++ scanners, use of: Cxx
c++, experimental form of scanner class: Cxx
C++, multiple different scanners: Cxx
C-strings, in actions: Actions
case-insensitive, effect on character classes: Patterns
character classes in patterns: Patterns
character classes in patterns, syntax of: Patterns
character classes, equivalence of: Patterns
clearing an input buffer: Multiple Input Buffers
command-line options: Scanner Options
comments in flex input: Definitions Section
comments in the input: Comments in the Input
comments, discarding: Actions
comments, example of scanning C comments: Start Conditions
comments, in actions: Actions
comments, in rules section: Comments in the Input
comments, syntax of: Comments in the Input
comments, valid uses of: Comments in the Input
compressing whitespace: Actions
concatenation, in patterns: Patterns
copyright of flex: Copyright
counting characters and lines: Simple Examples
customizing I/O in C++ scanners: How do I use my own I/O classes in a C++ scanner?

default rule: Simple Examples
default rule: Matching
defining pattern aliases: Definitions Section
Definitions, in flex input: Definitions Section
deleting lines from input: Actions
discarding C comments: Actions
distributing flex: Copyright

ECHO: Actions
ECHO, and yyout: Generated Scanner
embedding C code in flex input: Definitions Section
end of file, in patterns: Patterns
end of line, in negated character classes: Patterns
end of line, in patterns: Patterns
end-of-file, and yyrestart(): Generated Scanner
EOF and yyrestart(): Generated Scanner
EOF in patterns, syntax of: Patterns
EOF, example using multiple input buffers: Multiple Input Buffers
EOF, explanation: EOF
EOF, pushing back: Actions
EOL, in negated character classes: Patterns
EOL, in patterns: Patterns
error messages, end of buffer missed: Lex and Posix
error reporting, diagnostic messages: Diagnostics
error reporting, in C++: Cxx
error rules, to eliminate backing up: Performance
escape sequences in patterns, syntax of: Patterns
exiting with yyterminate(): Actions
experimental form of c++ scanner class: Cxx
extended scope of start conditions: Start Conditions

file format: Format
file format, serialized tables: Tables File Format
flushing an input buffer: Multiple Input Buffers
flushing the internal buffer: Actions
format of flex input: Format
format of input file: Format
freeing tables: Loading and Unloading Serialized Tables

getting current start state with YY_START: Start Conditions

halting with yyterminate(): Actions
handling include files with multiple input buffers: Multiple Input Buffers
handling include files with multiple input buffers: Multiple Input Buffers
header files, with C++: Cxx

include files, with C++: Cxx
input file, Definitions section: Definitions Section
input file, Rules Section: Rules Section
input file, user code Section: User Code Section
input(): Actions
input(), and C++: Actions
input, format of: Format
input, matching: Matching

keywords, for performance: Performance

lex (traditional) and POSIX: Lex and Posix
LexerInput, overriding: How do I use my own I/O classes in a C++ scanner?
LexerOutput, overriding: How do I use my own I/O classes in a C++ scanner?
limitations of flex: Limitations
literal text in patterns, syntax of: Patterns
loading tables at runtime: Loading and Unloading Serialized Tables

m4: M4 Dependency
Makefile, example of implicit rules: Makefiles and Flex
Makefile, explicit example: Makefiles and Flex
Makefile, syntax: Makefiles and Flex
matching C-style double-quoted strings: Start Conditions
matching, and trailing context: Matching
matching, length of: Matching
matching, multiple matches: Matching
member functions, C++: Cxx
memory management: Memory Management
memory, allocating input buffers: Multiple Input Buffers
memory, considerations for reentrant scanners: Init and Destroy Functions
memory, deleting input buffers: Multiple Input Buffers
memory, for start condition stacks: Start Conditions
memory, serialized tables: Serialized Tables
memory, serialized tables: Loading and Unloading Serialized Tables
methods, c++: Cxx
minimal scanner: Matching
multiple input streams: Multiple Input Buffers

name definitions, not POSIX: Lex and Posix
negating ranges in patterns: Patterns
newline, matching in patterns: Patterns
non-POSIX features of flex: Lex and Posix
noyywrap, %option: Generated Scanner
NULL character in patterns, syntax of: Patterns

octal characters in patterns: Patterns
options, command-line: Scanner Options
overriding LexerInput: How do I use my own I/O classes in a C++ scanner?
overriding LexerOutput: How do I use my own I/O classes in a C++ scanner?
overriding the memory routines: Overriding The Default Memory Management

Pascal-like language: Simple Examples
pattern aliases, defining: Definitions Section
pattern aliases, expansion of: Patterns
pattern aliases, how to define: Definitions Section
pattern aliases, use of: Definitions Section
patterns and actions on different lines: Lex and Posix
patterns, character class equivalence: Patterns
patterns, common: Common Patterns
patterns, end of line: Patterns
patterns, grouping and precedence: Patterns
patterns, in rules section: Patterns
patterns, invalid trailing context: Patterns
patterns, matching: Matching
patterns, precedence of operators: Patterns
patterns, repetitions with grouping: Patterns
patterns, special characters treated as non-special: Patterns
patterns, syntax: Patterns
patterns, syntax: Patterns
patterns, tuning for performance: Performance
patterns, valid character classes: Patterns
performance optimization, matching longer tokens: Performance
performance optimization, recognizing keywords: Performance
performance, backing up: Performance
performance, considerations: Performance
performance, using keywords: Performance
popping an input buffer: Multiple Input Buffers
POSIX and lex: Lex and Posix
POSIX comp;compliance: Lex and Posix
POSIX, character classes in patterns, syntax of: Patterns
preprocessor macros, for use in actions: Actions
pushing an input buffer: Multiple Input Buffers
pushing back characters with unput: Actions
pushing back characters with unput(): Actions
pushing back characters with yyless: Actions
pushing back EOF: Actions

ranges in patterns: Patterns
ranges in patterns, negating: Patterns
recognizing C comments: Start Conditions
reentrant scanners, multiple interleaved scanners: Reentrant Uses
reentrant scanners, recursive invocation: Reentrant Uses
reentrant, accessing flex variables: Global Replacement
reentrant, accessor functions: Accessor Methods
reentrant, API explanation: Reentrant Overview
reentrant, calling functions: Extra Reentrant Argument
reentrant, example of: Reentrant Example
reentrant, explanation: Reentrant
reentrant, extra data: Extra Data
reentrant, initialization: Init and Destroy Functions
regular expressions, in patterns: Patterns
REJECT: Actions
REJECT, calling multiple times: Actions
REJECT, performance costs: Performance
reporting bugs: Reporting Bugs
restarting the scanner: Lex and Posix
RETURN, within actions: Generated Scanner
rules, default: Simple Examples
rules, in flex input: Rules Section

scanner, definition of: Introduction
sections of flex input: Format
serialization: Serialized Tables
serialization of tables: Creating Serialized Tables
serialized tables, multiple scanners: Creating Serialized Tables
stack, input buffer pop: Multiple Input Buffers
stack, input buffer push: Multiple Input Buffers
stacks, routines for manipulating: Start Conditions
start condition, applying to multiple patterns: Start Conditions
start conditions: Start Conditions
start conditions, behavior of default rule: Start Conditions
start conditions, exclusive: Start Conditions
start conditions, for different interpretations of same input: Start Conditions
start conditions, in patterns: Patterns
start conditions, inclusive: Start Conditions
start conditions, inclusive v.s. exclusive: Start Conditions
start conditions, integer values: Start Conditions
start conditions, multiple: Start Conditions
start conditions, special wildcard condition: Start Conditions
start conditions, use of a stack: Start Conditions
start conditions, use of wildcard condition (<*>): Start Conditions
start conditions, using BEGIN: Start Conditions
stdin, default for yyin: Generated Scanner
stdout, as default for yyout: Generated Scanner
strings, scanning strings instead of files: Multiple Input Buffers

tables, creating serialized: Creating Serialized Tables
tables, file format: Tables File Format
tables, freeing: Loading and Unloading Serialized Tables
tables, loading and unloading: Loading and Unloading Serialized Tables
terminating with yyterminate(): Actions
token: Matching
trailing context, in patterns: Patterns
trailing context, limits of: Patterns
trailing context, matching: Matching
trailing context, performance costs: Performance
trailing context, variable length: Performance

unput(): Actions
unput(), and %pointer: Actions
unput(), pushing back characters: Actions
user code, in flex input: User Code Section
username expansion: Simple Examples
using integer values of start condition names: Start Conditions

verbatim text in patterns, syntax of: Patterns

warning, dangerous trailing context: Limitations
warning, rule cannot be matched: Diagnostics
warnings, diagnostic messages: Diagnostics
whitespace, compressing: Actions

yacc interface: Yacc
yacc, interface: Yacc
yyalloc, overriding: Overriding The Default Memory Management
yyfree, overriding: Overriding The Default Memory Management
yyin: Generated Scanner
yyinput(): Actions
yyleng: Matching
yyleng, modification of: Actions
yyless(): Actions
yyless(), pushing back characters: Actions
yylex(), in generated scanner: Generated Scanner
yylex(), overriding: Generated Scanner
yylex, overriding the prototype of: Generated Scanner
yylineno, in a reentrant scanner: Reentrant Functions
yylineno, performance costs: Performance
yymore(): Actions
yymore() to append token to previous token: Actions
yymore(), mega-kludge: Actions
yymore, and yyleng: Actions
yymore, performance penalty of: Actions
yyout: Generated Scanner
yyrealloc, overriding: Overriding The Default Memory Management
yyrestart(): Generated Scanner
yyterminate(): Actions
yytext: Matching
yytext, default array size: User Values
yytext, memory considerations: A Note About yytext And Memory
yytext, modification of: Actions
yytext, two types of: Matching
yywrap(): Generated Scanner
yywrap, default for: Generated Scanner
YY_CURRENT_BUFFER, and multiple buffers Finally, the macro: Multiple Input Buffers
YY_EXTRA_TYPE, defining your own type: Extra Data
YY_INPUT: Generated Scanner
YY_INPUT, overriding: Generated Scanner
YY_START, example: Start Conditions
YY_USER_ACTION to track each time a rule is matched: Misc Macros

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