abapGit/src/syntax/zcl_abapgit_syntax_xml.clas.abap
2018-06-02 09:06:41 +02:00

119 lines
3.4 KiB
ABAP

CLASS zcl_abapgit_syntax_xml DEFINITION
PUBLIC
INHERITING FROM zcl_abapgit_syntax_highlighter
CREATE PUBLIC .
PUBLIC SECTION.
CONSTANTS:
BEGIN OF c_css,
xml_tag TYPE string VALUE 'xml_tag', "#EC NOTEXT
attr TYPE string VALUE 'attr', "#EC NOTEXT
attr_val TYPE string VALUE 'attr_val', "#EC NOTEXT
END OF c_css .
CONSTANTS:
BEGIN OF c_token,
xml_tag TYPE c VALUE 'X', "#EC NOTEXT
attr TYPE c VALUE 'A', "#EC NOTEXT
attr_val TYPE c VALUE 'V', "#EC NOTEXT
END OF c_token .
CONSTANTS:
BEGIN OF c_regex,
xml_tag TYPE string VALUE '[<>]', "#EC NOTEXT
attr TYPE string VALUE '\s[-a-z:_0-9]+\s*(?==)', "#EC NOTEXT
attr_val TYPE string VALUE '["''][^''"]+[''"]', "#EC NOTEXT
END OF c_regex .
METHODS constructor .
PROTECTED SECTION.
METHODS order_matches REDEFINITION.
ENDCLASS.
CLASS zcl_abapgit_syntax_xml IMPLEMENTATION.
METHOD constructor.
super->constructor( ).
" Initialize instances of regular expressions
add_rule( iv_regex = c_regex-xml_tag
iv_token = c_token-xml_tag
iv_style = c_css-xml_tag ).
add_rule( iv_regex = c_regex-attr
iv_token = c_token-attr
iv_style = c_css-attr ).
add_rule( iv_regex = c_regex-attr_val
iv_token = c_token-attr_val
iv_style = c_css-attr_val ).
ENDMETHOD.
METHOD order_matches.
DATA:
lv_index TYPE sy-tabix,
lv_prev_token TYPE c,
lv_state TYPE c VALUE 'O'. " O - for open tag; C - for closed tag;
FIELD-SYMBOLS:
<ls_prev> TYPE ty_match,
<ls_match> TYPE ty_match.
SORT ct_matches BY offset.
LOOP AT ct_matches ASSIGNING <ls_match>.
lv_index = sy-tabix.
CASE <ls_match>-token.
WHEN c_token-xml_tag.
<ls_match>-text_tag = substring( val = iv_line
off = <ls_match>-offset
len = <ls_match>-length ).
" No other matches between two tags
IF <ls_match>-text_tag = '>' AND lv_prev_token = c_token-xml_tag.
lv_state = 'C'.
<ls_prev>-length = <ls_match>-offset - <ls_prev>-offset + <ls_match>-length.
DELETE ct_matches INDEX lv_index.
CONTINUE.
" Adjust length and offset of closing tag
ELSEIF <ls_match>-text_tag = '>' AND lv_prev_token <> c_token-xml_tag.
lv_state = 'C'.
IF <ls_prev> IS ASSIGNED.
<ls_match>-length = <ls_match>-offset - <ls_prev>-offset - <ls_prev>-length + <ls_match>-length.
<ls_match>-offset = <ls_prev>-offset + <ls_prev>-length.
ENDIF.
ELSE.
lv_state = 'O'.
ENDIF.
WHEN OTHERS.
IF lv_prev_token = c_token-xml_tag.
<ls_prev>-length = <ls_match>-offset - <ls_prev>-offset. " Extend length of the opening tag
ENDIF.
IF lv_state = 'C'. " Delete all matches between tags
DELETE ct_matches INDEX lv_index.
CONTINUE.
ENDIF.
ENDCASE.
lv_prev_token = <ls_match>-token.
ASSIGN <ls_match> TO <ls_prev>.
ENDLOOP.
ENDMETHOD. " order_matches
ENDCLASS.