From 96908ec43ed27d9f34da27b6a94a6db357465056 Mon Sep 17 00:00:00 2001 From: Karen Arutyunov Date: Thu, 14 May 2020 14:18:50 +0300 Subject: Add build script --- libbuild2/build/script/parser.hxx | 92 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 92 insertions(+) create mode 100644 libbuild2/build/script/parser.hxx (limited to 'libbuild2/build/script/parser.hxx') diff --git a/libbuild2/build/script/parser.hxx b/libbuild2/build/script/parser.hxx new file mode 100644 index 0000000..a8ffb25 --- /dev/null +++ b/libbuild2/build/script/parser.hxx @@ -0,0 +1,92 @@ +// file : libbuild2/build/script/parser.hxx -*- C++ -*- +// license : MIT; see accompanying LICENSE file + +#ifndef LIBBUILD2_BUILD_SCRIPT_PARSER_HXX +#define LIBBUILD2_BUILD_SCRIPT_PARSER_HXX + +#include +#include +#include + +#include + +#include + +#include +#include + +namespace build2 +{ + namespace build + { + namespace script + { + class runner; + + class parser: public build2::script::parser + { + // Pre-parse. Issue diagnostics and throw failed in case of an error. + // + public: + parser (context& c): build2::script::parser (c) {} + + void + pre_parse (istream&, const path_name&, uint64_t line, script&); + + // Recursive descent parser. + // + // Usually (but not always) parse functions receive the token/type + // from which it should start consuming and in return the token/type + // should contain the first token that has not been consumed. + // + // Functions that are called parse_*() rather than pre_parse_*() are + // used for both stages. + // + protected: + token + pre_parse_script (); + + void + pre_parse_line (token&, token_type&, bool if_line = false); + + void + pre_parse_if_else (token&, token_type&); + + command_expr + parse_command_line (token&, token_type&); + + // Workaround for GCC 4.9 that fails to compile the base class + // protected member function call from a lambda defined in the derived + // class. + // + using build2::parser::apply_value_attributes; + + // Execute. Issue diagnostics and throw failed in case of an error. + // + public: + void + execute (environment&, runner&); + + protected: + void + exec_script (); + + // Customization hooks. + // + protected: + virtual lookup + lookup_variable (name&&, string&&, const location&) override; + + protected: + script* script_; + + // Execute state. + // + runner* runner_; + environment* environment_; + }; + } + } +} + +#endif // LIBBUILD2_BUILD_SCRIPT_PARSER_HXX -- cgit v1.1