Loader

empty bool empty(): Implements the empty range primitive.
front Node front(): Implements the front range primitive.
load Node load(): Load single YAML document.
name void name(string name): Set stream name. Used in debugging messages.
opCmp int opCmp(Loader ): Undocumented in source.
opEquals bool opEquals(Loader ): Undocumented in source.
parse auto parse(): Undocumented in source. Be warned that the author may not have intended to support it.
popFront void popFront(): Implements the popFront range primitive.
resolver auto ref resolver(): Specify custom Resolver to use.
scanBench void scanBench(): Undocumented in source. Be warned that the author may not have intended to support it.

Static functions

fromBuffer Loader fromBuffer(ubyte[] yamlData)
Loader fromBuffer(void[] yamlData): Construct a Loader to load YAML from a buffer.
fromFile Loader fromFile(string filename)
Loader fromFile(File file): Construct a Loader to load YAML from a file.
fromString Loader fromString(char[] data)
Loader fromString(string data): Construct a Loader to load YAML from a string.

Examples

Load single YAML document from a file:

write("example.yaml", "Hello world!");
auto rootNode = Loader.fromFile("example.yaml").load();
assert(rootNode == "Hello world!");

Load single YAML document from an already-opened file:

// Open a temporary file
auto file = File.tmpfile;
// Write valid YAML
file.write("Hello world!");
// Return to the beginning
file.seek(0);
// Load document
auto rootNode = Loader.fromFile(file).load();
assert(rootNode == "Hello world!");

Load all YAML documents from a file:

import std.array : array;
import std.file : write;
write("example.yaml",
    "---\n"~
    "Hello world!\n"~
    "...\n"~
    "---\n"~
    "Hello world 2!\n"~
    "...\n"
);
auto nodes = Loader.fromFile("example.yaml").array;
assert(nodes.length == 2);

Iterate over YAML documents in a file, lazily loading them:

import std.file : write;
write("example.yaml",
    "---\n"~
    "Hello world!\n"~
    "...\n"~
    "---\n"~
    "Hello world 2!\n"~
    "...\n"
);
auto loader = Loader.fromFile("example.yaml");

foreach(ref node; loader)
{
    //Do something
}

Load YAML from a string:

string yaml_input = ("red:   '#ff0000'\n" ~
                    "green: '#00ff00'\n" ~
                    "blue:  '#0000ff'");

auto colors = Loader.fromString(yaml_input).load();

foreach(string color, string value; colors)
{
    // Do something with the color and its value...
}

Load a file into a buffer in memory and then load YAML from that buffer:

import std.file : read, write;
import std.stdio : writeln;
// Create a yaml document
write("example.yaml",
    "---\n"~
    "Hello world!\n"~
    "...\n"~
    "---\n"~
    "Hello world 2!\n"~
    "...\n"
);
try
{
    string buffer = readText("example.yaml");
    auto yamlNode = Loader.fromString(buffer);

    // Read data from yamlNode here...
}
catch(FileException e)
{
    writeln("Failed to read file 'example.yaml'");
}

Use a custom resolver to support custom data types and/or implicit tags:

import std.file : write;
// Create a yaml document
write("example.yaml",
    "---\n"~
    "Hello world!\n"~
    "...\n"
);

auto loader = Loader.fromFile("example.yaml");

// Add resolver expressions here...
// loader.resolver.addImplicitResolver(...);

auto rootNode = loader.load();

Loader

Constructors

Members

Functions

Static functions

Examples

Meta

Source