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