src/common/filter-grammar-test.cpp

   1 /*
   2  * filter-grammar-test.c
   3  *
   4  * LTTng filter grammar test
   5  *
   6  * Copyright 2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
   7  *
   8  * SPDX-License-Identifier: LGPL-2.1-only
   9  *
  10  */
  11
  12 #include <stdio.h>
  13 #include <unistd.h>
  14 #include <string.h>
  15 #include <stdlib.h>
  16 #include <inttypes.h>
  17
  18 #include <common/compat/errno.hpp>
  19 #include <common/bytecode/bytecode.hpp>
  20 #include <common/filter/filter-ast.hpp>
  21 #include <common/filter/filter-parser.hpp>
  22
  23 /* For error.h */
  24 int lttng_opt_quiet = 1;
  25 int lttng_opt_verbose;
  26 int lttng_opt_mi;
  27
  28 int main(int argc, char **argv)
  29 {
  30         struct filter_parser_ctx *ctx;
  31         int ret;
  32         int print_xml = 0, generate_ir = 0, generate_bytecode = 0,
  33                 print_bytecode = 0;
  34         int argidx;
  35
  36         for (argidx = 1; argidx < argc; argidx++) {
  37                 if (strcmp(argv[argidx], "-p") == 0)
  38                         print_xml = 1;
  39                 else if (strcmp(argv[argidx], "-i") == 0)
  40                         generate_ir = 1;
  41                 else if (strcmp(argv[argidx], "-b") == 0)
  42                         generate_bytecode = 1;
  43                 else if (strcmp(argv[argidx], "-d") == 0)
  44                         filter_parser_debug = 1;
  45                 else if (strcmp(argv[argidx], "-B") == 0)
  46                         print_bytecode = 1;
  47         }
  48
  49         /*
  50          * Force generate the bytecode if the user asks to print the bytecode
  51          * (can't print it without generating it first).
  52          */
  53         if (print_bytecode) {
  54                 generate_bytecode = 1;
  55         }
  56
  57         /*
  58          * Force generate the IR if the user asks to generate the bytecode
  59          * (the bytecode is generated by visiting the IR).
  60          */
  61         if (generate_bytecode) {
  62                 generate_ir = 1;
  63         }
  64
  65         ctx = filter_parser_ctx_alloc(stdin);
  66         if (!ctx) {
  67                 fprintf(stderr, "Error allocating parser\n");
  68                 goto alloc_error;
  69         }
  70         ret = filter_parser_ctx_append_ast(ctx);
  71         if (ret) {
  72                 fprintf(stderr, "Parse error\n");
  73                 goto parse_error;
  74         }
  75         if (print_xml) {
  76                 ret = filter_visitor_print_xml(ctx, stdout, 0);
  77                 if (ret) {
  78                         fflush(stdout);
  79                         fprintf(stderr, "XML print error\n");
  80                         goto parse_error;
  81                 }
  82         }
  83         if (generate_ir) {
  84                 printf("Generating IR... ");
  85                 fflush(stdout);
  86                 ret = filter_visitor_ir_generate(ctx);
  87                 if (ret) {
  88                         fprintf(stderr, "Generate IR error\n");
  89                         goto parse_error;
  90                 }
  91                 printf("done\n");
  92
  93                 printf("Validating IR... ");
  94                 fflush(stdout);
  95                 ret = filter_visitor_ir_check_binary_op_nesting(ctx);
  96                 if (ret) {
  97                         goto parse_error;
  98                 }
  99                 printf("done\n");
 100         }
 101         if (generate_bytecode) {
 102                 printf("Generating bytecode... ");
 103                 fflush(stdout);
 104                 ret = filter_visitor_bytecode_generate(ctx);
 105                 if (ret) {
 106                         fprintf(stderr, "Generate bytecode error\n");
 107                         goto parse_error;
 108                 }
 109                 printf("done\n");
 110                 printf("Size of bytecode generated: %u bytes.\n",
 111                         bytecode_get_len(&ctx->bytecode->b));
 112         }
 113
 114         if (print_bytecode) {
 115                 unsigned int bytecode_len, len, i;
 116
 117                 len = bytecode_get_len(&ctx->bytecode->b);
 118                 bytecode_len = ctx->bytecode->b.reloc_table_offset;
 119                 printf("Bytecode:\n");
 120                 for (i = 0; i < bytecode_len; i++) {
 121                         printf("0x%X ",
 122                                 ((uint8_t *) ctx->bytecode->b.data)[i]);
 123                 }
 124                 printf("\n");
 125                 printf("Reloc table:\n");
 126                 for (i = bytecode_len; i < len;) {
 127                         printf("{ 0x%X, ",
 128                                 *(uint16_t *) &ctx->bytecode->b.data[i]);
 129                         i += sizeof(uint16_t);
 130                         printf("%s } ", &((char *) ctx->bytecode->b.data)[i]);
 131                         i += strlen(&((char *) ctx->bytecode->b.data)[i]) + 1;
 132                 }
 133                 printf("\n");
 134         }
 135
 136         filter_bytecode_free(ctx);
 137         filter_ir_free(ctx);
 138         filter_parser_ctx_free(ctx);
 139         return 0;
 140
 141 parse_error:
 142         filter_bytecode_free(ctx);
 143         filter_ir_free(ctx);
 144         filter_parser_ctx_free(ctx);
 145 alloc_error:
 146         exit(EXIT_FAILURE);
 147 }