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Diffstat (limited to 'jam-files/engine/yyacc.c')
| -rw-r--r-- | jam-files/engine/yyacc.c | 268 |
1 files changed, 0 insertions, 268 deletions
diff --git a/jam-files/engine/yyacc.c b/jam-files/engine/yyacc.c deleted file mode 100644 index b5efc96b..00000000 --- a/jam-files/engine/yyacc.c +++ /dev/null @@ -1,268 +0,0 @@ -/* Copyright 2002 Rene Rivera. -** Distributed under the Boost Software License, Version 1.0. -** (See accompanying file LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt) -*/ - -#include <stdio.h> -#include <string.h> -#include <ctype.h> -#include <stdlib.h> - -/* -# yyacc - yacc wrapper -# -# Allows tokens to be written as `literal` and then automatically -# substituted with #defined tokens. -# -# Usage: -# yyacc file.y filetab.h file.yy -# -# inputs: -# file.yy yacc grammar with ` literals -# -# outputs: -# file.y yacc grammar -# filetab.h array of string <-> token mappings -# -# 3-13-93 -# Documented and p moved in sed command (for some reason, -# s/x/y/p doesn't work). -# 10-12-93 -# Take basename as second argument. -# 12-31-96 -# reversed order of args to be compatible with GenFile rule -# 11-20-2002 -# Reimplemented as a C program for portability. (Rene Rivera) -*/ - -void print_usage(); -char * copy_string(char * s, int l); -char * tokenize_string(char * s); -int cmp_literal(const void * a, const void * b); - -typedef struct -{ - char * string; - char * token; -} literal; - -int main(int argc, char ** argv) -{ - int result = 0; - if (argc != 4) - { - print_usage(); - result = 1; - } - else - { - FILE * token_output_f = 0; - FILE * grammar_output_f = 0; - FILE * grammar_source_f = 0; - - grammar_source_f = fopen(argv[3],"r"); - if (grammar_source_f == 0) { result = 1; } - if (result == 0) - { - literal literals[1024]; - int t = 0; - char l[2048]; - while (1) - { - if (fgets(l,2048,grammar_source_f) != 0) - { - char * c = l; - while (1) - { - char * c1 = strchr(c,'`'); - if (c1 != 0) - { - char * c2 = strchr(c1+1,'`'); - if (c2 != 0) - { - literals[t].string = copy_string(c1+1,c2-c1-1); - literals[t].token = tokenize_string(literals[t].string); - t += 1; - c = c2+1; - } - else - break; - } - else - break; - } - } - else - { - break; - } - } - literals[t].string = 0; - literals[t].token = 0; - qsort(literals,t,sizeof(literal),cmp_literal); - { - int p = 1; - int i = 1; - while (literals[i].string != 0) - { - if (strcmp(literals[p-1].string,literals[i].string) != 0) - { - literals[p] = literals[i]; - p += 1; - } - i += 1; - } - literals[p].string = 0; - literals[p].token = 0; - t = p; - } - token_output_f = fopen(argv[2],"w"); - if (token_output_f != 0) - { - int i = 0; - while (literals[i].string != 0) - { - fprintf(token_output_f," { \"%s\", %s },\n",literals[i].string,literals[i].token); - i += 1; - } - fclose(token_output_f); - } - else - result = 1; - if (result == 0) - { - grammar_output_f = fopen(argv[1],"w"); - if (grammar_output_f != 0) - { - int i = 0; - while (literals[i].string != 0) - { - fprintf(grammar_output_f,"%%token %s\n",literals[i].token); - i += 1; - } - rewind(grammar_source_f); - while (1) - { - if (fgets(l,2048,grammar_source_f) != 0) - { - char * c = l; - while (1) - { - char * c1 = strchr(c,'`'); - if (c1 != 0) - { - char * c2 = strchr(c1+1,'`'); - if (c2 != 0) - { - literal key; - literal * replacement = 0; - key.string = copy_string(c1+1,c2-c1-1); - key.token = 0; - replacement = (literal*)bsearch( - &key,literals,t,sizeof(literal),cmp_literal); - *c1 = 0; - fprintf(grammar_output_f,"%s%s",c,replacement->token); - c = c2+1; - } - else - { - fprintf(grammar_output_f,"%s",c); - break; - } - } - else - { - fprintf(grammar_output_f,"%s",c); - break; - } - } - } - else - { - break; - } - } - fclose(grammar_output_f); - } - else - result = 1; - } - } - if (result != 0) - { - perror("yyacc"); - } - } - return result; -} - -static char * usage[] = { - "yyacc <grammar output.y> <token table output.h> <grammar source.yy>", - 0 }; - -void print_usage() -{ - char ** u; - for (u = usage; *u != 0; ++u) - { - fputs(*u,stderr); putc('\n',stderr); - } -} - -char * copy_string(char * s, int l) -{ - char * result = (char*)malloc(l+1); - strncpy(result,s,l); - result[l] = 0; - return result; -} - -char * tokenize_string(char * s) -{ - char * result; - char * literal = s; - int l; - int c; - - if (strcmp(s,":") == 0) literal = "_colon"; - else if (strcmp(s,"!") == 0) literal = "_bang"; - else if (strcmp(s,"!=") == 0) literal = "_bang_equals"; - else if (strcmp(s,"&&") == 0) literal = "_amperamper"; - else if (strcmp(s,"&") == 0) literal = "_amper"; - else if (strcmp(s,"+") == 0) literal = "_plus"; - else if (strcmp(s,"+=") == 0) literal = "_plus_equals"; - else if (strcmp(s,"||") == 0) literal = "_barbar"; - else if (strcmp(s,"|") == 0) literal = "_bar"; - else if (strcmp(s,";") == 0) literal = "_semic"; - else if (strcmp(s,"-") == 0) literal = "_minus"; - else if (strcmp(s,"<") == 0) literal = "_langle"; - else if (strcmp(s,"<=") == 0) literal = "_langle_equals"; - else if (strcmp(s,">") == 0) literal = "_rangle"; - else if (strcmp(s,">=") == 0) literal = "_rangle_equals"; - else if (strcmp(s,".") == 0) literal = "_period"; - else if (strcmp(s,"?") == 0) literal = "_question"; - else if (strcmp(s,"?=") == 0) literal = "_question_equals"; - else if (strcmp(s,"=") == 0) literal = "_equals"; - else if (strcmp(s,",") == 0) literal = "_comma"; - else if (strcmp(s,"[") == 0) literal = "_lbracket"; - else if (strcmp(s,"]") == 0) literal = "_rbracket"; - else if (strcmp(s,"{") == 0) literal = "_lbrace"; - else if (strcmp(s,"}") == 0) literal = "_rbrace"; - else if (strcmp(s,"(") == 0) literal = "_lparen"; - else if (strcmp(s,")") == 0) literal = "_rparen"; - l = strlen(literal)+2; - result = (char*)malloc(l+1); - for (c = 0; literal[c] != 0; ++c) - { - result[c] = toupper(literal[c]); - } - result[l-2] = '_'; - result[l-1] = 't'; - result[l] = 0; - return result; -} - -int cmp_literal(const void * a, const void * b) -{ - return strcmp(((const literal *)a)->string,((const literal *)b)->string); -} |