converting literals and identifier to tokens.converting keywords and chars with special meanings to tokens.The tokenizer's job, in principle, boils down to: You can either let KDevelop-PG-Qt generate one for you, write one per hand, as it has been done for C++ and PHP, or you can use external tools like Flex. -token-text - generates a function to map token-numbers onto token-namesĪs mentioned, KDevelop-PG-Qt requires a Tokenizer.useful for debugging and solving conflicts -rules - all grammar rules with informationen about their syntactic correlations will be written into a file called kdev-pg-rules.-symbols - all possible nodes from the AST (not the leafs) will be written into the file kdev-pg-symbols.-terminals - all tokens will be written into the file kdev-pg-terminals.
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an expression parser or parsers that should only parse a sub-element of a full document. The parser will have one parse method for each possible node of the AST. Having the token stream available, you create your root item and call the parser on the parse method for the top-level AST item, e.g.
See also the part about Tokenizers/Lexers below. You have to write your own lexer or let one generate by Flex. The TokenStream of your lexer should to use this. One important part of parser.h is the definition of the parser tokens, the TokenType enum. Each node is a struct with the postfix Ast, which contains members that point to any possible sub elements. It defines the data structure in which the parse tree is saved. As said above, the following files will actually be prefixed.ĪST stands for Abstract Syntax Tree. While evaluating the grammar and generating its parser files, the application will output information about so called conflicts to STDOUT. Kate provides elementary highlighting for KDevelop-PG-Qt's grammar-files. The value of the -output switch decides the prefix of the output files and additionally the namespace for the generated code. Four example packages are also included in the sources. However, it does not cover recently added features. You find it in the Weblinks section at the bottom of this page. To get an in-depth introduction, read Jakob Petsovits' excellent Bachelor thesis. Instead it is intended to be a short introduction and, more importantly, a reference for developers. This document is not supposed to be a full-fledged and in-depth resource for all parts of KDevelop-PG. Qt version should be used to write parsers for KDevelop language plugins.
#Qt creator 5.5 generator
Qt parser generator is more up to date and feature rich than the plain STL style generator. Most of the features are the same, though it could be that the.
There's also the original KDevelop-PG parser, which used types from the STL, but has since been superceeded by KDevelop-PG-Qt. It is used for some KDevelop-languagesupport-plugins (Ruby, PHP, CSS.). KDevelop-PG-Qt is the parser-generator from KDevplatform.