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// file : build2/test/script/parser -*- C++ -*-
// copyright : Copyright (c) 2014-2016 Code Synthesis Ltd
// license : MIT; see accompanying LICENSE file
#ifndef BUILD2_TEST_SCRIPT_PARSER
#define BUILD2_TEST_SCRIPT_PARSER
#include <build2/types>
#include <build2/utility>
#include <build2/parser>
#include <build2/diagnostics>
#include <build2/test/script/token>
#include <build2/test/script/script>
namespace build2
{
namespace test
{
namespace script
{
class lexer;
class runner;
class parser: protected build2::parser
{
public:
// Issue diagnostics and throw failed in case of an error.
//
void
pre_parse (istream&, const path& name, script&);
void
parse (const path& name, script& s, runner& r)
{
parse (s, name, s, r);
}
// Recursive descent parser.
//
// Each parse function receives the token/type from which it should
// start consuming. On return the token/type should contain the first
// token that has not been consumed. For *_line() functions this is
// the newline.
//
protected:
void
parse (scope&, const path& name, script&, runner&);
token
pre_parse_scope_body ();
void
parse_scope_body ();
description
pre_parse_description (token&, token_type&);
optional<description>
pre_parse_line (token&, token_type&,
optional<description>&&,
lines* = nullptr);
bool
parse_variable_line (token&, token_type&);
pair<bool, optional<description>>
parse_command_line (token&, token_type&, line_type, size_t);
command_exit
parse_command_exit (token&, token_type&);
string
parse_here_document (token&, token_type&, const string&, bool);
// Customization hooks.
//
protected:
virtual lookup
lookup_variable (name&&, string&&, const location&) override;
// Number of quoted tokens since last reset. Note that this includes
// the peeked token, if any.
//
protected:
size_t
quoted () const;
void
reset_quoted (token& current);
size_t replay_quoted_;
// Insert id into the id map checking for duplicates.
//
protected:
const string&
insert_id (string, location);
protected:
using base_parser = build2::parser;
lexer* lexer_;
script* script_;
runner* runner_;
// Pre-parse state.
//
using id_map = std::unordered_map<string, location>;
group* group_;
id_map* id_map_;
// Parse state.
//
scope* scope_;
};
}
}
}
#endif // BUILD2_TEST_SCRIPT_PARSER
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