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commandLineParser.ts

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/// <reference path="sys.ts"/>

/// <reference path="types.ts"/>

/// <reference path="core.ts"/>

/// <reference path="scanner.ts"/>

module ts {

var shortOptionNames: Map<string> = {

"d": "declaration",

"h": "help",

"m": "module",

"o": "out",

"t": "target",

"v": "version",

};

var options: CommandLineOption[] = [

{ name: "charset", type: "string" },

{ name: "codepage", type: "number" },

{ name: "declaration", type: "boolean" },

{ name: "diagnostics", type: "boolean" },

{ name: "help", type: "boolean" },

{ name: "locale", type: "string" },

{ name: "mapRoot", type: "string" },

{ name: "module", type: { "commonjs": ModuleKind.CommonJS, "amd": ModuleKind.AMD }, error: Diagnostics.Argument_for_module_option_must_be_commonjs_or_amd },

{ name: "noImplicitAny", type: "boolean" },

{ name: "noLib", type: "boolean" },

{ name: "noLibCheck", type: "boolean" },

{ name: "noResolve", type: "boolean" },

{ name: "out", type: "string" },

{ name: "outDir", type: "string" },

{ name: "removeComments", type: "boolean" },

{ name: "sourceMap", type: "boolean" },

{ name: "sourceRoot", type: "string" },

{ name: "target", type: { "es3": ScriptTarget.ES3, "es5": ScriptTarget.ES5 }, error: Diagnostics.Argument_for_target_option_must_be_es3_or_es5 },

{ name: "version", type: "boolean" }

];

// Map command line switches to compiler options' property descriptors. Keys must be lower case spellings of command line switches.

// The 'name' property specifies the property name in the CompilerOptions type. The 'type' property specifies the type of the option.

var optionDeclarations: Map<CommandLineOption> = {};

forEach(options, option => {

optionDeclarations[option.name.toLowerCase()] = option;

});

export function parseCommandLine(commandLine: string[]): ParsedCommandLine {

// Set default compiler option values

var options: CompilerOptions = {

target: ScriptTarget.ES3,

module: ModuleKind.None

};

var filenames: string[] = [];

var errors: Diagnostic[] = [];

parseStrings(commandLine);

return {

options: options,

filenames: filenames,

errors: errors

};

function parseStrings(args: string[]) {

var i = 0;

while (i < args.length) {

var s = args[i++];

if (s.charCodeAt(0) === CharacterCodes.at) {

parseResponseFile(s.slice(1));

}

else if (s.charCodeAt(0) === CharacterCodes.minus) {

s = s.slice(s.charCodeAt(1) === CharacterCodes.minus ? 2 : 1).toLowerCase();

// Try to translate short option names to their full equivalents.

if (hasProperty(shortOptionNames, s)) {

s = shortOptionNames[s];

}

if (hasProperty(optionDeclarations, s)) {

var opt = optionDeclarations[s];

// Check to see if no argument was provided (e.g. "--locale" is the last command-line argument).

if (!args[i] && opt.type !== "boolean") {

errors.push(createCompilerDiagnostic(Diagnostics.Compiler_option_0_expects_an_argument, opt.name));

}

switch (opt.type) {

case "number":

options[opt.name] = parseInt(args[i++]);

break;

case "boolean":

options[opt.name] = true;

break;

case "string":

options[opt.name] = args[i++] || "";

break;

// If not a primitive, the possible types are specified in what is effectively a map of options.

default:

var value = (args[i++] || "").toLowerCase();

if (hasProperty(opt.type, value)) {

options[opt.name] = opt.type[value];

}

else {

errors.push(createCompilerDiagnostic(opt.error));

}

}

}

else {

errors.push(createCompilerDiagnostic(Diagnostics.Unknown_compiler_option_0, s));

}

}

else {

filenames.push(s);

}

}

}

function parseResponseFile(filename: string) {

var text = sys.readFile(filename);

if (!text) {

errors.push(createCompilerDiagnostic(Diagnostics.File_0_not_found, filename));

return;

}

var args: string[] = [];

var pos = 0;

while (true) {

while (pos < text.length && text.charCodeAt(pos) <= CharacterCodes.space) pos++;

if (pos >= text.length) break;

var start = pos;

if (text.charCodeAt(start) === CharacterCodes.doubleQuote) {

pos++;

while (pos < text.length && text.charCodeAt(pos) !== CharacterCodes.doubleQuote) pos++;

if (pos < text.length) {

args.push(text.substring(start + 1, pos));

pos++;

}

else {

errors.push(createCompilerDiagnostic(Diagnostics.Unterminated_quoted_string_in_response_file_0, filename));

}

}

else {

while (text.charCodeAt(pos) > CharacterCodes.space) pos++;

args.push(text.substring(start, pos));

}

}

parseStrings(args);

}

}

}