Struct PromptParser 

pub struct PromptParser;

Parser for prompt template files.

Implementations

impl PromptParser

pub fn from_file(path: impl AsRef<Path>) -> Result<PromptTemplate>

Parses a prompt template from a file.

The format is auto-detected from the file extension.

Arguments

• path - Path to the prompt file

Errors

Returns an error if the file cannot be read or parsed.

Example

use subcog::services::PromptParser;

let template = PromptParser::from_file("prompts/review.md")?;
println!("Loaded: {}", template.name);

pub fn from_stdin( format: PromptFormat, name: impl Into<String>, ) -> Result<PromptTemplate>

Parses a prompt template from stdin.

Arguments

• format - The format to parse as
• name - Name for the template (required since stdin has no filename)

Errors

Returns an error if stdin cannot be read or parsed.

pub fn parse(content: &str, format: PromptFormat) -> Result<PromptTemplate>

Parses a prompt template from string content.

Arguments

• content - The raw content to parse
• format - The format to parse as

Errors

Returns an error if parsing fails.

fn parse_markdown(content: &str) -> Result<PromptTemplate>

Parses markdown with optional YAML front matter.

fn parse_yaml(content: &str) -> Result<PromptTemplate>

Parses YAML format.

fn parse_json(content: &str) -> Result<PromptTemplate>

Parses JSON format.

fn parse_structured(value: &Value) -> Result<PromptTemplate>

Parses a structured value (JSON or YAML converted to JSON).

fn parse_plain_text(content: &str) -> Result<PromptTemplate>

Parses plain text (just content, no metadata).

pub fn serialize( template: &PromptTemplate, format: PromptFormat, ) -> Result<String>

Serializes a prompt template to the specified format.

Arguments

• template - The template to serialize
• format - The output format

Errors

Returns an error if serialization fails.

fn serialize_markdown(template: &PromptTemplate) -> Result<String>

Serializes to markdown with YAML front matter.

fn serialize_yaml(template: &PromptTemplate) -> Result<String>

Serializes to YAML.

fn serialize_json(template: &PromptTemplate) -> Result<String>

Serializes to JSON.