Syntax

Collaboration diagram for Syntax:

Files
file	syntax.c
	Syntax highlighting engine implementation.

Functions
int	is_separator (int c)
	Determine whether a byte is a token separator for highlighting.
void	editorUpdateSyntax (erow *row)
	Compute highlighting for a row based on current filetype.
int	editorSyntaxToColor (int hl)
	Map a highlight class to an ANSI color code.
void	editorSelectSyntaxHighlight (void)
	Select appropriate language rules based on E.filename.

Detailed Description

Function Documentation

editorSelectSyntaxHighlight()

void editorSelectSyntaxHighlight

(

void

)

Select appropriate language rules based on E.filename.

Sets E.syntax to a matching entry in HLDB by extension or substring, and recomputes highlighting for all rows.

Postcondition

E.syntax may change; row highlights are updated accordingly.

editorSyntaxToColor()

int editorSyntaxToColor

(

int

hl

)

Map a highlight class to an ANSI color code.

Parameters

[in]

hl

One of HL_* constants.

Returns

ANSI color code suitable for 30–37 range.

editorUpdateSyntax()

void editorUpdateSyntax

(

erow *

row

)

Compute highlighting for a row based on current filetype.

Updates row->hl based on the current filetype rules in E.syntax, marking comments, strings, numbers, and keywords. Propagates multi-line comment state to the following row when it changes.

Parameters

[in,out]

row

Row whose render buffer has been prepared.

See also

editorUpdateRow(), editorSelectSyntaxHighlight()

is_separator()

int is_separator

(

int

c

)

Determine whether a byte is a token separator for highlighting.

Separators include whitespace, NUL, and common punctuation.

Parameters

[in]

c

Byte value to test.

Returns

Non-zero if c is a separator; 0 otherwise.