diff options
Diffstat (limited to 'libbuild2/build/script/parser.hxx')
| -rw-r--r-- | libbuild2/build/script/parser.hxx | 47 |
1 files changed, 45 insertions, 2 deletions
diff --git a/libbuild2/build/script/parser.hxx b/libbuild2/build/script/parser.hxx index 5f08209..15d4ede 100644 --- a/libbuild2/build/script/parser.hxx +++ b/libbuild2/build/script/parser.hxx @@ -34,8 +34,9 @@ namespace build2 // name. // script - pre_parse (istream&, const path_name&, uint64_t line, - optional<string> diag); + pre_parse (const target&, + istream&, const path_name&, uint64_t line, + optional<string> diag, const location& diag_loc); // Recursive descent parser. // @@ -82,9 +83,51 @@ namespace build2 virtual lookup lookup_variable (name&&, string&&, const location&) override; + // During execution translate the process path and executable targets + // leaving the rest for the base parser to handle. + // + // During pre-parsing try to deduce the low-verbosity script + // diagnostics name. + // + virtual optional<process_path> + parse_program (token&, build2::script::token_type&, names&) override; + + void + parse_program_diag (token&, build2::script::token_type&, names&); + protected: script* script_; + // Current low-verbosity script diagnostics name and weight. + // + // During pre-parsing each command leading names are translated into a + // potential script name, unless it is set manually (with the diag + // directive or via the constructor). The potential script name has a + // weight associated with it, so script names with greater weights + // override names with lesser weights. The possible weights are: + // + // 0 - builtins that do not add to the script semantics (exit, + // true, etc) and are never picked up as a script name + // + // [1 2] - other builtins + // + // 3 - process path or executable target + // + // 4 - manually set names + // + // If two potential script names with the same weights are encountered + // then this ambiguity is reported unless a higher-weighted name is + // encountered later. + // + optional<pair<string, location>> diag; + optional<pair<string, location>> diag2; + uint8_t diag_weight = 0; + + // True during pre-parsing when the pre-parse mode is temporarily + // suspended to perform expansion. + // + bool pre_parse_suspended_ = false; + // Execute state. // runner* runner_; |