# eric7.EricGui.EricGenericDiffHighlighter

Module implementing a syntax highlighter for diff outputs.

### Global Attributes

_RegexCache

### Classes

EricGenericDiffHighlighter | Class implementing a generic diff highlighter.

### Functions

TERMINAL | Function to mark a pattern as the final one to search for.

## EricGenericDiffHighlighter

Class implementing a generic diff highlighter.

### Derived from

QSyntaxHighlighter

### Class Attributes

None

### Class Methods

None

### Methods

EricGenericDiffHighlighter | Constructor
createRules | Public method to create the highlighting rules.
formats | Public method to determine the highlighting formats for a line of text.
generateRules | Public method to generate the rule set.
highlightBlock | Public method to highlight a block of text.
makeFormat | Public method to generate a format definition.
regenerateRules | Public method to initialize or regenerate the syntax highlighter rules.

### Static Methods

None

#### EricGenericDiffHighlighter (Constructor)

EricGenericDiffHighlighter(doc)

Constructor

doc (QTextDocument)
  reference to the text document

#### EricGenericDiffHighlighter.createRules

createRules(*rules)

Public method to create the highlighting rules.

rules (set of tuple of (str, QTextCharFormat))
  set of highlighting rules (list of tuples of rule pattern and highlighting format)

#### EricGenericDiffHighlighter.formats

formats(line)

Public method to determine the highlighting formats for a line of text.

line (str)
  text line to be highlighted

Return:
  list of matched highlighting rules (list of tuples of match object and format)

Return Type:
  list of tuple of (re.Match, QTextCharFormat)

#### EricGenericDiffHighlighter.generateRules

generateRules()

Public method to generate the rule set.

Note: This method must me implemented by derived syntax highlighters.

#### EricGenericDiffHighlighter.highlightBlock

highlightBlock(text)

Public method to highlight a block of text.

text (str)
  text to be highlighted

#### EricGenericDiffHighlighter.makeFormat

makeFormat(fg=None, bg=None, bold=False)

Public method to generate a format definition.

fg (QColor)
  foreground color
bg (QColor)
  background color
bold (bool)
  flag indicating bold text

Return:
  format definiton

Return Type:
  QTextCharFormat

#### EricGenericDiffHighlighter.regenerateRules

regenerateRules(colors, font)

Public method to initialize or regenerate the syntax highlighter rules.

colors (dict[str: QColor])
  dictionary containing the different color values (keys are "text", "added", "removed","replaced", "context", "header", "whitespace")
font (QFont)
  font

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## TERMINAL

TERMINAL(pattern)

Function to mark a pattern as the final one to search for.

pattern (str)
  pattern to be marked

Return:
  marked pattern

Return Type:
  str

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