diff options
Diffstat (limited to 'gcc/cobol/util.h')
-rw-r--r-- | gcc/cobol/util.h | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/gcc/cobol/util.h b/gcc/cobol/util.h index 165915a..d07b669 100644 --- a/gcc/cobol/util.h +++ b/gcc/cobol/util.h @@ -59,5 +59,70 @@ as_voidp( P p ) { return static_cast<const void *>(p); } +/* + * The default source format, whether free or fixed, is determined + * heuristically by examining the PROGRAM-ID line, if it exists, in the first + * input file. If that file does not have such a line, the default is free + * format. Else the format is set to fixed if anything appears on that line + * that would prohibit parsing it as free format, + */ +class source_format_t { + bool first_file, explicitly; + int left, right; +public: + source_format_t() + : first_file(true), explicitly(false), left(0), right(0) + {} + void indicator_column_set( int column ) { + explicitly = true; + if( column == 0 ) right = 0; + if( column < 0 ) { + column = -column; + right = 73; + } + left = column; + } + + bool inference_pending() { + bool tf = first_file && !explicitly; + first_file = false; + return tf; + } + + void infer( const char *bol, bool want_reference_format ); + + inline bool is_fixed() const { return left == 7; } + inline bool is_reffmt() const { return is_fixed() && right == 73; } + inline bool is_free() const { return ! is_fixed(); } + + const char * description() const { + if( is_reffmt() ) return "REFERENCE"; + if( is_fixed() ) return "FIXED"; + if( is_free() ) return "FREE"; + gcc_unreachable(); + } + + inline int left_margin() { + return left == 0? left : left - 1; + } + inline int right_margin() { + return right == 0? right : right - 1; + } +}; + + +void cdf_push(); +void cdf_push_call_convention(); +void cdf_push_current_tokens(); +void cdf_push_dictionary(); +void cdf_push_enabled_exceptions(); +void cdf_push_source_format(); + +void cdf_pop(); +void cdf_pop_call_convention(); +void cdf_pop_current_tokens(); +void cdf_pop_dictionary(); +void cdf_pop_source_format(); +void cdf_pop_enabled_exceptions(); #endif |