First usable generator source.

Still issues with usage rules and error reporting, but functional.
2019-09-28 16:01:40 +01:00
parent 54de004ede
commit 60d0446cf0
24 changed files with 1605 additions and 0 deletions
--- a/generator/templates/ArgGrammarParser.yy
+++ b/generator/templates/ArgGrammarParser.yy
@@ -0,0 +1,94 @@
+{{=@@ @@=}}
+%skeleton "lalr1.cc"
+%require "3.2"
+%debug
+%defines
+%define api.namespace {@@{argspec}@@ArgGrammar}
+%define api.parser.class {Parser}
+%file-prefix "@@{argspec}@@ArgGrammarParser"
+
+%code requires{
+	namespace @@{argspec}@@ArgGrammar {
+		class Driver;
+		class Scanner;
+	}
+
+#ifndef YY_NULLPTR
+#	if defined __cplusplus && 201103L <= __cplusplus
+#		define YY_NULLPTR nullptr
+#	else
+#		define YY_NULLPTR 0
+#	endif
+#endif
+}
+
+%parse-param { Scanner& scanner }
+%parse-param { Driver& driver }
+
+%code{
+#include <string>
+#include <map>
+#include <utility>
+
+#include "@@{argspec}@@ArgGrammarDriver.hpp"
+#include "@@{argspec}@@ArgGrammarScanner.hpp"
+
+#undef yylex
+#define yylex scanner.yylex
+}
+
+%define api.value.type variant
+%define parse.assert
+
+%token <std::string> POSITIONAL_ARGUMENT@@#argument_tokens@@
+%token ARGUMENT_@@{clean_token}@@@@/argument_tokens@@
+
+%start ARGUMENTS
+
+%%
+
+ARGUMENTS
+	: ARGUMENT_help {
+		std::cout
+			<< "Usage:\n"
+			<< "\n"@@#usage@@
+			<< driver.getArgv()[0] << "@@#flags@@ @@{.}@@@@/flags@@@@#positional@@ <@@{.}@@>@@/positional@@\n"@@/usage@@
+			<< driver.getArgv()[0] << " --help\n"
+			<< driver.getArgv()[0] << " --version\n"
+			<< driver.getArgv()[0] << " --license\n"
+			<< "\n"
+			<< "Arguments:\n"
+			<< "\n"@@#argument_explanations@@
+			<< "@@{.}@@\n"
+			<< "\n"@@/argument_explanations@@@@#argument_tokens@@
+			<< " @@#short_argument@@-@@{short_argument}@@,@@/short_argument@@@@^short_argument@@   @@/short_argument@@ --@@{argument}@@@@{parameter_align_spacing}@@@@#parameters@@ <@@{name}@@>@@#next_state@@,@@/next_state@@@@/parameters@@@@^parameters@@   @@/parameters@@ @@{explain_align_spacing}@@@@{usage}@@\n"@@/argument_tokens@@
+			<< "\n"
+			<< "@@{help_addendum}@@"@@/help_addendum@@
+			<< std::endl;
+		driver.addArg(@@{argspec}@@ArgGrammar::FlagArg::help);
+		driver.setResult(Driver::Result::completedAction);
+	}
+	| ARGUMENT_version {
+		std::cout << "@@{version}@@" << std::endl;
+		driver.addArg(@@{argspec}@@ArgGrammar::FlagArg::version);
+		driver.setResult(Driver::Result::completedAction);
+	}
+	| ARGUMENT_license {
+		std::cout << "@@{license}@@" << std::endl;
+		driver.addArg(@@{argspec}@@ArgGrammar::FlagArg::license);
+		driver.setResult(Driver::Result::completedAction);
+	} @@#usage@@
+	|@@#flags@@ ARGUMENT_@@{.}@@@@/flags@@@@#positional@@ @@{.}@@@@/positional@@@@^flags@@@@^positional@@ %empty@@/positional@@@@/flags@@@@/usage@@
+	;@@#usage_rules@@
+
+ARGUMENT_@@{rule_name}@@
+	:@@#options@@ ARGUMENT_@@{option}@@@@#has_next@@
+	|@@/has_next@@@@/options@@
+	;@@/usage_rules@@
+
+%%
+
+void @@{argspec}@@ArgGrammar::Parser::error(const std::string& err_message)
+{
+	std::cerr << "Error: " << err_message << '\n';
+}