Struct Syntax 

pub struct Syntax {
    pub expr: (String, String),
    pub block: BlockStyle,
    pub text_prefix: Option<String>,
}

The configurable surface syntax of a template.

Fields

expr: (String, String)

The interpolation delimiter pair, e.g. ({{, }}).

block: BlockStyle

How block directives are delimited.

text_prefix: Option<String>

Optional line prefix that is stripped; content after it is emitted as text.

A physical line whose first non-whitespace characters equal this prefix has the leading whitespace and the prefix removed. The rest of the line (including a trailing newline) is ordinary template text and may contain interpolations.

When both this and a BlockStyle::Line prefix could match the same line, the longer prefix wins. They must not be identical (see Syntax::validate).

Implementations

impl Syntax

pub fn brackets() -> Self

Bracket style: {{ expr }} interpolation and {% ... %} block directives.

pub fn lines() -> Self

Line style: {{ expr }} interpolation and #kw ... line directives.

pub fn validate(&self) -> Result<(), TemplateError>

Checks that this syntax configuration is internally consistent.

Currently rejects an empty text_prefix and a text_prefix identical to the block line prefix.

pub fn with_frontmatter(&self, front: &str) -> Result<Self, TemplateError>

Applies frontmatter key/value overrides onto a copy of this syntax.

Recognized keys (all optional; each may appear at most once):

• expr: <open> <close> — interpolation delimiters.
• block: paired <open> <close> — paired block directives.
• block: line <prefix> — line directives.
• text_prefix: <prefix> — strip this line prefix; remainder is verbatim text.

Blank lines and lines whose first non-whitespace character is # are ignored (comments). Keys present in front replace the corresponding fields of self; omitted keys are left unchanged. Locations in returned errors are relative to front.

Trait Implementations

impl Clone for Syntax

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Syntax

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for Syntax

fn default() -> Self

Returns the “default value” for a type.

impl Eq for Syntax

impl PartialEq for Syntax

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for Syntax