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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [gcc/] [go/] [go-linemap.cc] - Rev 848
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// go-linemap.cc -- GCC implementation of Linemap. // Copyright 2011 The Go Authors. All rights reserved. // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. #include "go-linemap.h" // This class implements the Linemap interface defined by the // frontend. class Gcc_linemap : public Linemap { public: Gcc_linemap() : Linemap(), in_file_(false) { } void start_file(const char* file_name, unsigned int line_begin); void start_line(unsigned int line_number, unsigned int line_size); Location get_location(unsigned int column); void stop(); protected: Location get_predeclared_location(); Location get_unknown_location(); bool is_predeclared(Location); bool is_unknown(Location); private: // Whether we are currently reading a file. bool in_file_; }; Linemap* Linemap::instance_ = NULL; // Start getting locations from a new file. void Gcc_linemap::start_file(const char *file_name, unsigned line_begin) { if (this->in_file_) linemap_add(line_table, LC_LEAVE, 0, NULL, 0); linemap_add(line_table, LC_ENTER, 0, file_name, line_begin); this->in_file_ = true; } // Stop getting locations. void Gcc_linemap::stop() { linemap_add(line_table, LC_LEAVE, 0, NULL, 0); this->in_file_ = false; } // Start a new line. void Gcc_linemap::start_line(unsigned lineno, unsigned linesize) { linemap_line_start(line_table, lineno, linesize); } // Get a location. Location Gcc_linemap::get_location(unsigned column) { return Location(linemap_position_for_column(line_table, column)); } // Get the unknown location. Location Gcc_linemap::get_unknown_location() { return Location(UNKNOWN_LOCATION); } // Get the predeclared location. Location Gcc_linemap::get_predeclared_location() { return Location(BUILTINS_LOCATION); } // Return whether a location is the predeclared location. bool Gcc_linemap::is_predeclared(Location loc) { return loc.gcc_location() == BUILTINS_LOCATION; } // Return whether a location is the unknown location. bool Gcc_linemap::is_unknown(Location loc) { return loc.gcc_location() == UNKNOWN_LOCATION; } // Return the Linemap to use for the gcc backend. Linemap* go_get_linemap() { return new Gcc_linemap; }
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