src/common/filter/filter-grammar-test.c

   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 <assert.h>
  17 #include <inttypes.h>
  18
  19 #include <common/compat/errno.h>
  20
  21 #include "filter-ast.h"
  22 #include "filter-parser.h"
  23 #include "filter-bytecode.h"
  24
  25 int main(int argc, char **argv)
  26 {
  27         struct filter_parser_ctx *ctx;
  28         int ret;
  29         int print_xml = 0, generate_ir = 0, generate_bytecode = 0,
  30                 print_bytecode = 0;
  31         int i;
  32
  33         for (i = 1; i < argc; i++) {
  34                 if (strcmp(argv[i], "-p") == 0)
  35                         print_xml = 1;
  36                 else if (strcmp(argv[i], "-i") == 0)
  37                         generate_ir = 1;
  38                 else if (strcmp(argv[i], "-b") == 0)
  39                         generate_bytecode = 1;
  40                 else if (strcmp(argv[i], "-d") == 0)
  41                         filter_parser_debug = 1;
  42                 else if (strcmp(argv[i], "-B") == 0)
  43                         print_bytecode = 1;
  44         }
  45
  46         /*
  47          * Force generate the bytecode if the user asks to print the bytecode
  48          * (can't print it without generating it first).
  49          */
  50         if (print_bytecode) {
  51                 generate_bytecode = 1;
  52         }
  53
  54         /*
  55          * Force generate the IR if the user asks to generate the bytecode
  56          * (the bytecode is generated by visiting the IR).
  57          */
  58         if (generate_bytecode) {
  59                 generate_ir = 1;
  60         }
  61
  62         ctx = filter_parser_ctx_alloc(stdin);
  63         if (!ctx) {
  64                 fprintf(stderr, "Error allocating parser\n");
  65                 goto alloc_error;
  66         }
  67         ret = filter_parser_ctx_append_ast(ctx);
  68         if (ret) {
  69                 fprintf(stderr, "Parse error\n");
  70                 goto parse_error;
  71         }
  72         if (print_xml) {
  73                 ret = filter_visitor_print_xml(ctx, stdout, 0);
  74                 if (ret) {
  75                         fflush(stdout);
  76                         fprintf(stderr, "XML print error\n");
  77                         goto parse_error;
  78                 }
  79         }
  80         if (generate_ir) {
  81                 printf("Generating IR... ");
  82                 fflush(stdout);
  83                 ret = filter_visitor_ir_generate(ctx);
  84                 if (ret) {
  85                         fprintf(stderr, "Generate IR error\n");
  86                         goto parse_error;
  87                 }
  88                 printf("done\n");
  89
  90                 printf("Validating IR... ");
  91                 fflush(stdout);
  92                 ret = filter_visitor_ir_check_binary_op_nesting(ctx);
  93                 if (ret) {
  94                         goto parse_error;
  95                 }
  96                 printf("done\n");
  97         }
  98         if (generate_bytecode) {
  99                 printf("Generating bytecode... ");
 100                 fflush(stdout);
 101                 ret = filter_visitor_bytecode_generate(ctx);
 102                 if (ret) {
 103                         fprintf(stderr, "Generate bytecode error\n");
 104                         goto parse_error;
 105                 }
 106                 printf("done\n");
 107                 printf("Size of bytecode generated: %u bytes.\n",
 108                         bytecode_get_len(&ctx->bytecode->b));
 109         }
 110
 111         if (print_bytecode) {
 112                 unsigned int bytecode_len, len, i;
 113
 114                 len = bytecode_get_len(&ctx->bytecode->b);
 115                 bytecode_len = ctx->bytecode->b.reloc_table_offset;
 116                 printf("Bytecode:\n");
 117                 for (i = 0; i < bytecode_len; i++) {
 118                         printf("0x%X ",
 119                                 ((uint8_t *) ctx->bytecode->b.data)[i]);
 120                 }
 121                 printf("\n");
 122                 printf("Reloc table:\n");
 123                 for (i = bytecode_len; i < len;) {
 124                         printf("{ 0x%X, ",
 125                                 *(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 }