#include #include #include #include /* Global state */ node_t *root; // Syntax tree tlhash_t *global_names; // Symbol table char **string_list; // List of strings in the source size_t n_string_list = 8; // Initial string list capacity (grow on demand) size_t stringc = 0; // Initial string count /* Command line option parsing for the main function */ static void options ( int argc, char **argv ); bool print_full_tree = false, print_simplified_tree = false, print_symbol_table_contents = false, print_generated_program = true, new_print_style = true; /* Entry point */ int main ( int argc, char **argv ) { options ( argc, argv ); yyparse(); // Generated from grammar/bison, constructs syntax tree if ( print_full_tree ) print_syntax_tree (); simplify_syntax_tree (); // In tree.c if ( print_simplified_tree ) print_syntax_tree (); create_symbol_table (); // In ir.c if ( print_symbol_table_contents ) print_symbol_table(); if ( print_generated_program ) generate_program (); // In generator.c destroy_syntax_tree (); // In tree.c destroy_symbol_table (); // In ir.c } static const char *usage = "Command line options\n" "\t-h\tOutput this text and halt\n" "\t-t\tOutput the full syntax tree\n" "\t-T\tOutput the simplified syntax tree\n" "\t-s\tOutput the symbol table contents\n" "\t-q\tQuiet: suppress output from the code generator\n" "\t-u\tDo not use print style more like the tree command\n"; static void options ( int argc, char **argv ) { int o; while ( (o=getopt(argc,argv,"htTsqu")) != -1 ) { switch ( o ) { case 'h': printf ( "%s:\n%s", argv[0], usage ); exit ( EXIT_FAILURE ); break; case 't': print_full_tree = true; break; case 'T': print_simplified_tree = true; break; case 's': print_symbol_table_contents = true; break; case 'q': print_generated_program = false; break; case 'u': new_print_style = false; break; } } }