Concept Index

• $ 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
• 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: Matching
• default rule: Simple Examples
• 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
• 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: Loading and Unloading Serialized Tables
• memory, serialized tables: 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, 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
• YY_CURRENT_BUFFER, and multiple buffers Finally, the macro: Multiple Input Buffers
• YY_EXTRA_TYPE, defining your own type: Extra Data
• YY_FLUSH_BUFFER: Actions
• 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
• 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
• |, in actions: Actions
• |, use of: Actions