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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [gcc/] [go/] [gofrontend/] [go.cc] - Rev 724
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// go.cc -- Go frontend main file for gcc. // Copyright 2009 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-system.h" #include "go-c.h" #include "lex.h" #include "parse.h" #include "backend.h" #include "gogo.h" // The unique prefix to use for exported symbols. This is set during // option processing. static std::string unique_prefix; // The data structures we build to represent the file. static Gogo* gogo; // Create the main IR data structure. GO_EXTERN_C void go_create_gogo(int int_type_size, int pointer_size) { go_assert(::gogo == NULL); Linemap* linemap = go_get_linemap(); ::gogo = new Gogo(go_get_backend(), linemap, int_type_size, pointer_size); if (!unique_prefix.empty()) ::gogo->set_unique_prefix(unique_prefix); // FIXME: This should be in the gcc dependent code. ::gogo->define_builtin_function_trees(); } // Set the unique prefix we use for exported symbols. GO_EXTERN_C void go_set_prefix(const char* arg) { unique_prefix = arg; for (size_t i = 0; i < unique_prefix.length(); ++i) { char c = unique_prefix[i]; if ((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || (c >= '0' && c <= '9') || c == '_') ; else unique_prefix[i] = '_'; } } // Parse the input files. GO_EXTERN_C void go_parse_input_files(const char** filenames, unsigned int filename_count, bool only_check_syntax, bool require_return_statement) { go_assert(filename_count > 0); for (unsigned int i = 0; i < filename_count; ++i) { if (i > 0) ::gogo->clear_file_scope(); const char* filename = filenames[i]; FILE* file; if (strcmp(filename, "-") == 0) file = stdin; else { file = fopen(filename, "r"); if (file == NULL) fatal_error("cannot open %s: %m", filename); } Lex lexer(filename, file, ::gogo->linemap()); Parse parse(&lexer, ::gogo); parse.program(); if (strcmp(filename, "-") != 0) fclose(file); } ::gogo->linemap()->stop(); ::gogo->clear_file_scope(); // If the global predeclared names are referenced but not defined, // define them now. ::gogo->define_global_names(); // Finalize method lists and build stub methods for named types. ::gogo->finalize_methods(); // Now that we have seen all the names, lower the parse tree into a // form which is easier to use. ::gogo->lower_parse_tree(); // Write out queued up functions for hash and comparison of types. ::gogo->write_specific_type_functions(); // Now that we have seen all the names, verify that types are // correct. ::gogo->verify_types(); // Work out types of unspecified constants and variables. ::gogo->determine_types(); // Check types and issue errors as appropriate. ::gogo->check_types(); if (only_check_syntax) return; // Check that functions have return statements. if (require_return_statement) ::gogo->check_return_statements(); // Export global identifiers as appropriate. ::gogo->do_exports(); // Turn short-cut operators (&&, ||) into explicit if statements. ::gogo->remove_shortcuts(); // Use temporary variables to force order of evaluation. ::gogo->order_evaluations(); // Build thunks for functions which call recover. ::gogo->build_recover_thunks(); // Convert complicated go and defer statements into simpler ones. ::gogo->simplify_thunk_statements(); // Dump ast, use filename[0] as the base name ::gogo->dump_ast(filenames[0]); } // Write out globals. GO_EXTERN_C void go_write_globals() { return ::gogo->write_globals(); } // Return the global IR structure. This is used by some of the // langhooks to pass to other code. Gogo* go_get_gogo() { return ::gogo; }
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