1 | /*
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2 | * Copyright (c) 2010 Jiri Svoboda
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3 | * All rights reserved.
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4 | *
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5 | * Redistribution and use in source and binary forms, with or without
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6 | * modification, are permitted provided that the following conditions
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7 | * are met:
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8 | *
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9 | * - Redistributions of source code must retain the above copyright
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10 | * notice, this list of conditions and the following disclaimer.
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11 | * - Redistributions in binary form must reproduce the above copyright
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12 | * notice, this list of conditions and the following disclaimer in the
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13 | * documentation and/or other materials provided with the distribution.
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14 | * - The name of the author may not be used to endorse or promote products
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15 | * derived from this software without specific prior written permission.
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16 | *
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17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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27 | */
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28 |
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29 | /** @file Main module.
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30 | *
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31 | * Main entry point for SBI, the Sysel Bootstrap Interpreter.
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32 | * When run without parameters, the interpreter will enter interactive
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33 | * mode.
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34 | */
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35 |
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36 | #include <stdio.h>
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37 | #include <stdlib.h>
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38 | #include "ancr.h"
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39 | #include "os/os.h"
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40 | #include "builtin.h"
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41 | #include "imode.h"
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42 | #include "mytypes.h"
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43 | #include "program.h"
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44 | #include "strtab.h"
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45 | #include "stree.h"
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46 | #include "stype.h"
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47 | #include "input.h"
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48 | #include "lex.h"
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49 | #include "parse.h"
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50 | #include "run.h"
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51 |
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52 | static void syntax_print(void);
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53 |
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54 | /** Main entry point.
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55 | *
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56 | * @return Zero on success, non-zero on error.
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57 | */
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58 | int main(int argc, char *argv[])
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59 | {
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60 | stree_program_t *program;
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61 | stype_t stype;
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62 | run_t run;
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63 | errno_t rc;
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64 |
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65 | /* Store executable file path under which we have been invoked. */
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66 | os_store_ef_path(*argv);
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67 |
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68 | argv += 1;
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69 | argc -= 1;
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70 |
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71 | if (argc == 0) {
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72 | /* Enter interactive mode */
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73 | strtab_init();
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74 | imode_run();
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75 | return 0;
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76 | }
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77 |
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78 | if (os_str_cmp(*argv, "-h") == 0) {
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79 | syntax_print();
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80 | return 0;
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81 | }
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82 |
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83 | strtab_init();
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84 | program = stree_program_new();
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85 | program->module = stree_module_new();
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86 |
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87 | /* Declare builtin symbols. */
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88 | builtin_declare(program);
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89 |
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90 | /* Process source files in the library. */
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91 | if (program_lib_process(program) != EOK)
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92 | return 1;
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93 |
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94 | /* Resolve ancestry. */
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95 | ancr_module_process(program, program->module);
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96 |
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97 | /* Bind internal interpreter references to symbols. */
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98 | builtin_bind(program->builtin);
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99 |
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100 | /* Process all source files specified in command-line arguments. */
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101 | while (argc > 0) {
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102 | rc = program_file_process(program, *argv);
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103 | if (rc != EOK)
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104 | return 1;
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105 |
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106 | argv += 1;
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107 | argc -= 1;
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108 | }
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109 |
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110 | /* Resolve ancestry. */
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111 | ancr_module_process(program, program->module);
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112 |
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113 | /* Type program. */
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114 | stype.program = program;
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115 | stype.error = b_false;
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116 | stype_module(&stype, program->module);
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117 |
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118 | /* Check for typing errors. */
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119 | if (stype.error)
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120 | return 1;
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121 |
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122 | /* Run program. */
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123 | run_init(&run);
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124 | run_program(&run, program);
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125 |
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126 | /* Check for run-time errors. */
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127 | if (run.thread_ar->error)
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128 | return 1;
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129 |
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130 | return 0;
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131 | }
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132 |
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133 | /** Print command-line syntax help. */
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134 | static void syntax_print(void)
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135 | {
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136 | printf("Syntax: sbi <source_file.sy>\n");
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137 | }
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