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Diffstat (limited to 'core/bgdc/src/typedef.c')
| -rw-r--r-- | core/bgdc/src/typedef.c | 242 |
1 files changed, 242 insertions, 0 deletions
diff --git a/core/bgdc/src/typedef.c b/core/bgdc/src/typedef.c new file mode 100644 index 0000000..e7ac992 --- /dev/null +++ b/core/bgdc/src/typedef.c @@ -0,0 +1,242 @@ +/* + * Copyright © 2006-2016 SplinterGU (Fenix/Bennugd) + * Copyright © 2002-2006 Fenix Team (Fenix) + * Copyright © 1999-2002 José Luis Cebrián Pagüe (Fenix) + * + * This file is part of Bennu - Game Development + * + * This software is provided 'as-is', without any express or implied + * warranty. In no event will the authors be held liable for any damages + * arising from the use of this software. + * + * Permission is granted to anyone to use this software for any purpose, + * including commercial applications, and to alter it and redistribute it + * freely, subject to the following restrictions: + * + * 1. The origin of this software must not be misrepresented; you must not + * claim that you wrote the original software. If you use this software + * in a product, an acknowledgment in the product documentation would be + * appreciated but is not required. + * + * 2. Altered source versions must be plainly marked as such, and must not be + * misrepresented as being the original software. + * + * 3. This notice may not be removed or altered from any source + * distribution. + * + */ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#include "bgdc.h" + +TYPEDEF typedef_new( BASETYPE type ) +{ + TYPEDEF t ; + + memset (&t, '\0', sizeof(t)); + + t.chunk[0].type = type ; + if ( type == TYPE_POINTER ) + { + t.depth = 2 ; + t.chunk[1].type = TYPE_UNDEFINED ; + } + else t.depth = 1 ; + t.varspace = 0 ; + return t ; +} + +TYPEDEF typedef_reduce( TYPEDEF base ) +{ + TYPEDEF t = base ; + + memmove( &t.chunk[0], &t.chunk[1], sizeof( TYPECHUNK ) * ( MAX_TYPECHUNKS - 1 ) ) ; + t.depth-- ; + return t ; +} + +TYPEDEF typedef_enlarge( TYPEDEF base ) +{ + TYPEDEF t = base ; + + memmove( &t.chunk[1], &t.chunk[0], sizeof( TYPECHUNK ) * ( MAX_TYPECHUNKS - 1 ) ) ; + t.depth++ ; + return t ; +} + +TYPEDEF typedef_pointer( TYPEDEF base ) +{ + TYPEDEF t = typedef_enlarge( base ) ; + + t.chunk[0].type = TYPE_POINTER ; + return t ; +} + +void typedef_describe( char * buffer, TYPEDEF t ) +{ + switch ( t.chunk[0].type ) + { + case TYPE_INT: + sprintf( buffer, "INT" ) ; + return ; + + case TYPE_DWORD: + sprintf( buffer, "DWORD" ) ; + return ; + + case TYPE_SHORT: + sprintf( buffer, "SHORT" ) ; + return ; + + case TYPE_WORD: + sprintf( buffer, "WORD" ) ; + return ; + + case TYPE_BYTE: + sprintf( buffer, "BYTE" ) ; + return ; + + case TYPE_CHAR: + sprintf( buffer, "CHAR" ) ; + return ; + + case TYPE_SBYTE: + sprintf( buffer, "SIGNED BYTE" ) ; + return ; + + case TYPE_STRING: + sprintf( buffer, "STRING" ) ; + return ; + + case TYPE_FLOAT: + sprintf( buffer, "FLOAT" ) ; + return ; + + case TYPE_STRUCT: + if ( t.chunk[0].count > 1 ) + sprintf( buffer, "STRUCT [%d]", t.chunk[0].count ) ; + else + sprintf( buffer, "STRUCT" ) ; + return ; + + case TYPE_ARRAY: + sprintf( buffer, "ARRAY [%d] OF ", t.chunk[0].count ) ; + typedef_describe( buffer + strlen( buffer ), typedef_reduce( t ) ) ; + return ; + + case TYPE_POINTER: + sprintf( buffer, "POINTER TO " ) ; + typedef_describe( buffer + strlen( buffer ), typedef_reduce( t ) ) ; + return ; + + case TYPE_UNDEFINED: + default: + sprintf( buffer, "<UNDEFINED>" ) ; + return ; + } +} + +int typedef_subsize( TYPEDEF t, int c ) +{ + switch ( t.chunk[c].type ) + { + case TYPE_BYTE: + case TYPE_SBYTE: + case TYPE_CHAR: + return 1 ; + + case TYPE_WORD: + case TYPE_SHORT: + return 2 ; + + case TYPE_DWORD: + case TYPE_INT: + case TYPE_FLOAT: + case TYPE_STRING: + case TYPE_POINTER: + return 4 ; + + case TYPE_ARRAY: + return t.chunk[c].count * typedef_subsize( t, c + 1 ) ; + + case TYPE_STRUCT: + return t.varspace->size ; + + default: + compile_error( MSG_INCOMP_TYPE ) ; + return 0 ; + } +} + +int typedef_size( TYPEDEF t ) +{ + return typedef_subsize( t, 0 ) ; +} + +/* Tipos nombrados (structs, típicamente) */ + +static TYPEDEF * named_types = NULL; +static int * named_codes = NULL; +static int named_count = 0 ; +static int named_reserved = 0; + +TYPEDEF * typedef_by_name( int code ) +{ + int n ; + + for ( n = 0 ; n < named_count ; n++ ) + if ( named_codes[n] == code ) return &named_types[n] ; + return 0 ; +} + +void typedef_name( TYPEDEF t, int code ) +{ + if ( named_count >= named_reserved ) + { + named_reserved += 16; + named_types = ( TYPEDEF * ) realloc( named_types, named_reserved * sizeof( TYPEDEF ) ); + named_codes = ( int * ) realloc( named_codes, named_reserved * sizeof( int ) ); + if ( !named_types || !named_codes ) compile_error( "typedef_name: out of memory\n" ) ; + } + named_codes[named_count] = code ; + named_types[named_count] = t ; + named_count++ ; +} + +int typedef_tcount( TYPEDEF t ) +{ + int n ; + int count = 1 ; + + if ( t.chunk[0].type == TYPE_STRUCT ) return t.chunk[0].count ; + for ( n = 0; t.chunk[n].type == TYPE_ARRAY; n++ ) count *= t.chunk[n].count ; + return count ; +} + +int typedef_is_equal( TYPEDEF a, TYPEDEF b ) +{ + int n; + + if ( a.depth != b.depth ) return 0; + + for ( n = 0; n < a.depth; n++ ) + { + if ( a.chunk[n].type == TYPE_STRUCT && b.chunk[n].type == TYPE_STRUCT && a.varspace != b.varspace ) + { + int m; + if ( a.varspace->count != b.varspace->count ) return 0; + for ( m = 0; m < a.varspace->count; m++ ) + { + if ( !typedef_is_equal( a.varspace->vars[m].type, b.varspace->vars[m].type ) ) return 0; + } + return 1; + } + if ( a.chunk[n].type != b.chunk[n].type ) return 0; + if ( a.chunk[n].type == TYPE_ARRAY && a.chunk[n].count != b.chunk[n].count ) return 0; + } + return 1; +} + |