diff options
Diffstat (limited to 'pigeonhole/src/lib-sieve/tst-allof.c')
-rw-r--r-- | pigeonhole/src/lib-sieve/tst-allof.c | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/pigeonhole/src/lib-sieve/tst-allof.c b/pigeonhole/src/lib-sieve/tst-allof.c new file mode 100644 index 0000000..6d278b9 --- /dev/null +++ b/pigeonhole/src/lib-sieve/tst-allof.c @@ -0,0 +1,108 @@ +/* Copyright (c) 2002-2018 Pigeonhole authors, see the included COPYING file + */ + +#include "sieve-common.h" +#include "sieve-commands.h" +#include "sieve-validator.h" +#include "sieve-generator.h" +#include "sieve-binary.h" +#include "sieve-code.h" +#include "sieve-binary.h" + +/* + * Allof test + * + * Syntax + * allof <tests: test-list> + */ + +static bool tst_allof_generate + (const struct sieve_codegen_env *cgenv, struct sieve_command *ctx, + struct sieve_jumplist *jumps, bool jump_true); +static bool tst_allof_validate_const + (struct sieve_validator *valdtr, struct sieve_command *tst, + int *const_current, int const_new); + +const struct sieve_command_def tst_allof = { + .identifier = "allof", + .type = SCT_TEST, + .positional_args = 0, + .subtests = 2, + .block_allowed = FALSE, + .block_required = FALSE, + .validate_const = tst_allof_validate_const, + .control_generate = tst_allof_generate +}; + +/* + * Code validation + */ + +static bool tst_allof_validate_const +(struct sieve_validator *valdtr ATTR_UNUSED, + struct sieve_command *tst ATTR_UNUSED, int *const_current, int const_next) +{ + if ( const_next == 0 ) { + *const_current = 0; + return FALSE; + } + + if ( *const_current != -1 ) + *const_current = const_next; + return TRUE; +} + +/* + * Code generation + */ + +static bool tst_allof_generate +(const struct sieve_codegen_env *cgenv, struct sieve_command *ctx, + struct sieve_jumplist *jumps, bool jump_true) +{ + struct sieve_binary_block *sblock = cgenv->sblock; + struct sieve_ast_node *test; + struct sieve_jumplist false_jumps; + + if ( sieve_ast_test_count(ctx->ast_node) > 1 ) { + if ( jump_true ) { + /* Prepare jumplist */ + sieve_jumplist_init_temp(&false_jumps, sblock); + } + + test = sieve_ast_test_first(ctx->ast_node); + while ( test != NULL ) { + bool result; + + /* If this test list must jump on false, all sub-tests can simply add their jumps + * to the caller's jump list, otherwise this test redirects all false jumps to the + * end of the currently generated code. This is just after a final jump to the true + * case + */ + if ( jump_true ) + result = sieve_generate_test(cgenv, test, &false_jumps, FALSE); + else + result = sieve_generate_test(cgenv, test, jumps, FALSE); + + if ( !result ) return FALSE; + + test = sieve_ast_test_next(test); + } + + if ( jump_true ) { + /* All tests succeeded, jump to case TRUE */ + sieve_operation_emit(cgenv->sblock, NULL, &sieve_jmp_operation); + sieve_jumplist_add(jumps, sieve_binary_emit_offset(sblock, 0)); + + /* All false exits jump here */ + sieve_jumplist_resolve(&false_jumps); + } + } else { + /* Script author is being inefficient; we can optimize the allof test away */ + test = sieve_ast_test_first(ctx->ast_node); + sieve_generate_test(cgenv, test, jumps, jump_true); + } + + return TRUE; +} + |