66 lines
1.5 KiB
C
66 lines
1.5 KiB
C
#include "vslc.h"
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#include <getopt.h>
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static bool print_full_tree = false;
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static bool print_simplified_tree = false;
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static const char* usage = "Compiler for VSL. The input program is read from stdin."
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"\n"
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"Options:\n"
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"\t -h \t Output this text and exit\n"
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"\t -t \t Output the abstract syntax tree\n"
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"\t -T \t Output the abstract syntax tree after constant folding\n";
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// Command line option parsing
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static void options(int argc, char** argv)
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{
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if (argc == 1)
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{
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fprintf(stderr, "%s: expected at last one option. See -h for help\n", argv[0]);
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exit(EXIT_FAILURE);
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}
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while (true)
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{
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switch (getopt(argc, argv, "htT"))
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{
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default: // Unrecognized option
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fprintf(stderr, "%s: See -h for help\n", argv[0]);
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exit(EXIT_FAILURE);
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case 'h':
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printf("%s:\n%s", argv[0], usage);
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exit(EXIT_SUCCESS);
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case 't':
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print_full_tree = true;
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break;
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case 'T':
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print_simplified_tree = true;
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break;
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case -1:
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return; // Done parsing options
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}
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}
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}
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// Entry point
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int main(int argc, char** argv)
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{
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options(argc, argv);
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yyparse(); // Generated from grammar/bison, constructs syntax tree
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yylex_destroy(); // Free buffers used by flex
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// Operations in tree.c
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if (print_full_tree)
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print_syntax_tree();
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simplify_syntax_tree();
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if (print_simplified_tree)
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print_syntax_tree();
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destroy_syntax_tree(); // In tree.c
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}
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