diff options
Diffstat (limited to 'source/luametatex/source/tex/texscanning.h')
| -rw-r--r-- | source/luametatex/source/tex/texscanning.h | 210 |
1 files changed, 210 insertions, 0 deletions
diff --git a/source/luametatex/source/tex/texscanning.h b/source/luametatex/source/tex/texscanning.h new file mode 100644 index 000000000..90897bf54 --- /dev/null +++ b/source/luametatex/source/tex/texscanning.h @@ -0,0 +1,210 @@ +/* + See license.txt in the root of this project. +*/ + +# ifndef LMT_SCANNING_H +# define LMT_SCANNING_H + +typedef enum value_level_code { + int_val_level, /*tex integer values */ + attr_val_level, /*tex integer values */ + dimen_val_level, /*tex dimension values */ + glue_val_level, /*tex glue specifications */ + mu_val_level, /*tex math glue specifications */ + tok_val_level, /*tex token lists */ + font_val_level , /*tex font identifier */ + mathspec_val_level , + fontspec_val_level , + specification_val_level, /*tex special purpose identifier */ + list_val_level, + no_val_level, +} value_level_code; + +# define first_value_level int_val_level +# define last_value_level mu_val_level + +typedef struct scanner_state_info { + int current_cmd; /*tex current command set by |get_next| */ + halfword current_chr; /*tex operand of current command */ + halfword current_cs; /*tex control sequence found here, zero if none found */ + // halfword current_flag; + halfword current_tok; /*tex packed representative of |cur_cmd| and |cur_chr| */ + int current_val; /*tex value returned by numeric scanners */ + int current_val_level; /*tex the level of this value */ + halfword current_box; /*tex the box to be placed into its context: */ + halfword last_cs_name; /*tex used in |\csname| and |\ifcsname| */ + int arithmic_error; + int expression_depth; +} scanner_state_info; + +extern scanner_state_info lmt_scanner_state; + +/*tex + These are rather basic \TEX\ The Program variables (aliases) so for now we stick to the + unqualified short names. +*/ + +# define cur_cmd lmt_scanner_state.current_cmd +# define cur_chr lmt_scanner_state.current_chr +# define cur_cs lmt_scanner_state.current_cs +# define cur_tok lmt_scanner_state.current_tok +# define cur_val lmt_scanner_state.current_val +# define cur_val_level lmt_scanner_state.current_val_level +# define cur_box lmt_scanner_state.current_box + +typedef struct full_scanner_status { + int save_scanner_status; + halfword save_def_ref; + halfword save_warning_index; +} full_scanner_status; + +inline static full_scanner_status tex_save_full_scanner_status(void) +{ + full_scanner_status a; + a.save_scanner_status = lmt_input_state.scanner_status; + a.save_def_ref = lmt_input_state.def_ref; + a.save_warning_index = lmt_input_state.warning_index; + return a; +} + +inline static void tex_unsave_full_scanner_status(full_scanner_status a) +{ + lmt_input_state.warning_index = a.save_warning_index; + lmt_input_state.def_ref = a.save_def_ref; + lmt_input_state.scanner_status = a.save_scanner_status; +} + +extern void tex_scan_something_simple (halfword cmd, halfword code); +extern void tex_scan_left_brace (void); +extern void tex_scan_optional_equals (void); +extern int tex_scan_cardinal (unsigned *value, int dontbark); +extern halfword tex_scan_int (int optional_equal, int *radix); +extern halfword tex_scan_scale (int optional_equal); +extern halfword tex_scan_dimen (int mu, int inf, int shortcut, int optional_equal, halfword *order); +extern halfword tex_scan_glue (int level, int optional_equal); +extern halfword tex_scan_font (int optional_equal); +extern halfword tex_scan_general_text (halfword *tail); +/* halfword tex_scan_toks (int macrodef, int xpand, int left_brace_found); */ +extern halfword tex_scan_toks_normal (int left_brace_found, halfword *tail); +extern halfword tex_scan_toks_expand (int left_brace_found, halfword *tail, int expandconstant); +extern halfword tex_scan_macro_normal (void); // (int tolerant); +extern halfword tex_scan_macro_expand (void); // (int tolerant); +extern halfword tex_scan_font_identifier (halfword *spec); +extern halfword tex_scan_fontspec_identifier (void); +extern halfword tex_scan_math_style_identifier (int tolerant, int styles); +extern halfword tex_scan_math_parameter (void); +extern halfword tex_scan_limited_scale (int optional_equal); +extern halfword tex_scan_positive_scale (int optional_equal); + +extern quarterword tex_scan_direction (int optional_equal); +extern halfword tex_scan_geometry (int optional_equal); +extern halfword tex_scan_orientation (int optional_equal); +extern halfword tex_scan_anchor (int optional_equal); +extern halfword tex_scan_anchors (int optional_equal); + +extern int tex_scanned_expression (int level); + +extern halfword tex_scan_int_register_number (void); +extern halfword tex_scan_dimen_register_number (void); +extern halfword tex_scan_attribute_register_number (void); +extern halfword tex_scan_glue_register_number (void); +extern halfword tex_scan_mu_glue_register_number (void); +extern halfword tex_scan_toks_register_number (void); +extern halfword tex_scan_box_register_number (void); +extern halfword tex_scan_mark_number (void); +extern halfword tex_scan_char_number (int optional_equal); +extern halfword tex_scan_math_char_number (void); +extern halfword tex_scan_math_family_number (void); +extern halfword tex_scan_math_class_number (int optional_equal); +extern halfword tex_scan_math_properties_number (void); +extern halfword tex_scan_math_group_number (void); +extern halfword tex_scan_math_index_number (void); +extern halfword tex_scan_math_discretionary_number (int optional_equal); +extern halfword tex_scan_category_code (void); +extern singleword tex_scan_box_index (void); /*tex For local boxes: small for now! */ +extern singleword tex_scan_box_axis (void); +extern halfword tex_scan_function_reference (int optional_equal); +extern halfword tex_scan_bytecode_reference (int optional_equal); + +extern halfword tex_the_value_toks (int unit, halfword *tail, halfword property); /* returns head */ +extern halfword tex_the_toks (int code, halfword *tail); /* returns head */ +extern halfword tex_the_detokenized_toks (halfword *head); +extern strnumber tex_the_scanned_result (void); + +extern void tex_set_font_dimen (void); +extern halfword tex_get_font_dimen (void); +extern void tex_set_scaled_font_dimen (void); +extern halfword tex_get_scaled_font_dimen (void); + +extern void tex_get_x_or_protected (void); + +extern int tex_fract (int x, int n, int d, int max_answer); + +extern halfword tex_scan_lua_value (int index); + +extern int tex_scan_tex_value (halfword level, halfword *value); + +extern halfword tex_scan_attribute (halfword attrlist); + +/* +# define token_is_digit(t) ((t >= zero_token ) && (t <= nine_token )) +# define token_is_xdigit(t) (((t >= zero_token ) && (t <= nine_token )) || \ + ((t >= a_token_l ) && (t <= f_token_l )) || \ + ((t >= A_token_l ) && (t <= F_token_l )) || \ + ((t >= a_token_o ) && (t <= f_token_o )) || \ + ((t >= A_token_o ) && (t <= F_token_o ))) +# define token_is_exponent(t) ((t == E_token_l ) || (t == e_token_l ) || \ + (t == E_token_o ) || (t == e_token_o )) +# define token_is_xexponent(t) ((t == P_token_l ) || (t == p_token_l ) || \ + (t == P_token_o ) || (t == p_token_o )) +# define token_is_hexadecimal(t) ((t == X_token_l ) || (t == x_token_l ) || \ + (t == X_token_o ) || (t == x_token_o )) +# define token_is_sign(t) ((t == minus_token ) || (t == plus_token )) +# define token_is_seperator(t) ((t == period_token) || (t == comma_token)) +*/ + +inline static int tex_token_is_digit(halfword t) +{ + return (t >= zero_token) && (t <= nine_token); +} + +inline static int tex_token_is_xdigit(halfword t) { + return ((t >= zero_token) && (t <= nine_token)) + || ((t >= a_token_l ) && (t <= f_token_l)) + || ((t >= A_token_l ) && (t <= F_token_l)) + || ((t >= a_token_o ) && (t <= f_token_o)) + || ((t >= A_token_o ) && (t <= F_token_o)); +} + +inline static int tex_token_is_exponent(halfword t) +{ + return (t == E_token_l) || (t == e_token_l) + || (t == E_token_o) || (t == e_token_o); +} + +inline static int tex_token_is_xexponent(halfword t) +{ + return (t == P_token_l) || (t == p_token_l) + || (t == P_token_o) || (t == p_token_o); +} + + inline static int tex_token_is_hexadecimal(halfword t) +{ + return (t == X_token_l) || (t == x_token_l) + || (t == X_token_o) || (t == x_token_o); +} + +inline static int tex_token_is_sign(halfword t) { + return (t == minus_token) || (t == plus_token); +} + +inline static int tex_token_is_seperator(halfword t) { + return (t == period_token) || (t == comma_token); +} + +inline static int tex_token_is_operator(halfword t) { + return (t == plus_token) || (t == minus_token) || (t == asterisk_token) || (t == slash_token) || (t == colon_token); +} + +# endif + |