jan
/
mustache.js
peilaus alkaen https://github.com/janl/mustache.js
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Code reorganization

tags/0.5.0-vsc
Sahab Yazdani 15 vuotta sitten
vanhempi
0dea790a0e
commit
efb2583e19
1 muutettua tiedostoa jossa 175 lisäystä ja 194 poistoa
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  1. +175
    -194
      mustache.js

+ 175
- 194
mustache.js Näytä tiedosto

@@ -101,6 +101,7 @@ var Mustache = (function(undefined) {
}
})();

/* BEGIN Helpers */
function noop() {}
var escapeCompiledRegex;
@@ -116,17 +117,62 @@ var Mustache = (function(undefined) {
return text.replace(escapeCompiledRegex, '\\$1');
}
function isWhitespace(token) {
return token.match(/^\s+$/)!==null;
function is_function(a) {
return a && typeof a === 'function';
}
function isNewline(token) {
return token.match(/\r?\n/)!==null;
function is_object(a) {
return a && typeof a === 'object';
}

function is_array(a) {
return Object.prototype.toString.call(a) === '[object Array]';
}
/* END Helpers */

/* BEGIN Compiler */
function compile(state, noReturn) {
var n, c, token;
for (n = state.tokens.length;state.cursor<n;++state.cursor) {
token = state.tokens[state.cursor];
if (token==='' || token===undefined) {
continue;
}
if (token.indexOf(state.openTag)===0) {
c = token.charAt(state.openTag.length);
if (state.parser[c]) {
state.parser[c](state, token, c);
} else {
state.parser.def(state, token);
}
} else {
state.parser.text(state, token);
}
}
if (!noReturn) {
var codeList = state.code;
if (codeList.length === 0) {
return noop;
} else if (codeList.length === 1) {
return codeList[0];
} else {
return function(context, send_func) {
for (var i=0,n=codeList.length;i<n;++i) {
codeList[i](context, send_func);
}
}
}
}
}
var default_tokenizer = /(\r?\n)|({{![\s\S]*?!}})|({{[#\^\/&{>=]?\s*\S*?\s*}?}})|({{=\S*?\s*\S*?=}})/;
function create_parser_state(template, partials, openTag, closeTag) {
function create_compiler_state(template, partials, openTag, closeTag) {
openTag = openTag || '{{';
closeTag = closeTag || '}}';

@@ -146,16 +192,15 @@ var Mustache = (function(undefined) {
, partials: partials || {}
, openTag: openTag
, closeTag: closeTag
, state: 'normal'
, parser: default_parser
, pragmas: {}
, code: code
, send_code_func: function(f) {
code.push(f);
}
};
// prefilter pragmas
pragmas(state);
pragmas(state); // use pragmas to determine parsing behaviour
// tokenize and initialize a cursor
state.tokens = splitFunc.call(state.template, tokenizer);
@@ -164,18 +209,60 @@ var Mustache = (function(undefined) {
return state;
}
function is_function(a) {
return a && typeof a === 'function';
}
function is_object(a) {
return a && typeof a === 'object';
}
function pragmas(state) {
/* includes tag */
function includes(needle, haystack) {
return haystack.indexOf('{{' + needle) !== -1;
}
var directives = {
'IMPLICIT-ITERATOR': function(options) {
state.pragmas['IMPLICIT-ITERATOR'] = {iterator: '.'};
if (options) {
state.pragmas['IMPLICIT-ITERATOR'].iterator = options['iterator'];
}
}
};
// no pragmas, easy escape
if(!includes("%", state.template)) {
return state.template;
}

function is_array(a) {
return Object.prototype.toString.call(a) === '[object Array]';
state.template = state.template.replace(/{{%([\w-]+)(\s*)(.*?(?=}}))}}/, function(match, pragma, space, suffix) {
var options = undefined,
optionPairs, scratch,
i, n;
if (suffix.length>0) {
optionPairs = suffix.split(',');
scratch;
options = {};
for (i=0, n=optionPairs.length; i<n; ++i) {
scratch = optionPairs[i].split('=');
if (scratch.length !== 2) {
throw new Error('Malformed pragma options:' + optionPairs[i]);
}
options[scratch[0]] = scratch[1];
}
}
if (is_function(directives[pragma])) {
directives[pragma](options);
} else {
throw new Error('This implementation of mustache does not implement the "' + pragma + '" pragma');
}

return ''; // blank out all pragmas
});
}
/* END Compiler */
/* BEGIN Run Time Helpers */
/*
find `name` in current `context`. That is find me a value
from the view object
@@ -211,33 +298,25 @@ var Mustache = (function(undefined) {
return undefined;
}
/* END Run Time Helpers */

function get_variable_name(state, token, prefix, postfix) {
var fragment = token
.substring(
state.openTag.length + (prefix ? 1 : 0)
, token.length - state.closeTag.length - (postfix ? 1 : 0)
);
if (String.prototype.trim) {
return fragment.trim();
} else {
return fragment.replace(/^\s\s*/, '').replace(/\s\s*$/, '');
}
function text(state, token) {
state.send_code_func(function(context, send_func) { send_func(token); });
}
function interpolate(state, token, escape) {
function interpolate(state, token, mark) {
function escapeHTML(str) {
return str.replace(/&/g,'&amp;')
.replace(/</g,'&lt;')
.replace(/>/g,'&gt;');
}
var prefix, postfix;
if (escape==='{') {
prefix = postfix = true;
} else if (escape==='&') {
prefix = true;
var escape, prefix, postfix;
if (mark==='{') {
escape = prefix = postfix = true;
} else if (mark==='&') {
escape = prefix = true;
}
var variable = get_variable_name(state, token, prefix, postfix);
@@ -267,7 +346,7 @@ var Mustache = (function(undefined) {
template = state.partials[variable]; // remember what the partial was
state.partials[variable] = noop; // avoid infinite recursion
program = parse(create_parser_state(
program = compile(create_compiler_state(
template
, state.partials
));
@@ -295,13 +374,6 @@ var Mustache = (function(undefined) {
}
function section(state) {
function create_section_state(template) {
return create_parser_state(template,
state.partials,
state.openTag,
state.closeTag);
}
// by @langalex, support for arrays of strings
function create_context(_context) {
if(is_object(_context)) {
@@ -316,8 +388,11 @@ var Mustache = (function(undefined) {
}
}
var s = state.section, template = s.template_buffer.join('')
program = parse(create_section_state(template));
var s = state.section, template = s.template_buffer.join(''),
program = compile(create_compiler_state(template,
state.partials,
state.openTag,
state.closeTag));
if (s.inverted) {
state.send_code_func((function(program, variable){ return function(context, send_func) {
@@ -347,7 +422,7 @@ var Mustache = (function(undefined) {
var o = [],
user_send_func = function(str) { o.push(str); };
parse(create_parser_state(hosFragment, partials))(context, user_send_func);
compile(create_compiler_state(hosFragment, partials))(context, user_send_func);
return o.join('');
}));
@@ -357,55 +432,47 @@ var Mustache = (function(undefined) {
};})(program, s.variable, template, state.partials));
}
}

/* BEGIN Parser */
function pragmas(state) {
/* includes tag */
function includes(needle, haystack) {
return haystack.indexOf('{{' + needle) !== -1;
}
var directives = {
'IMPLICIT-ITERATOR': function(options) {
state.pragmas['IMPLICIT-ITERATOR'] = {iterator: '.'};
if (options) {
state.pragmas['IMPLICIT-ITERATOR'].iterator = options['iterator'];
}
}
};
var default_parser = {
'!': noop,
'#': begin_section,
'^': begin_section,
'/': function(state, token) { throw new Error('Unbalanced End Section tag: ' + token); },
'&': interpolate,
'{': interpolate,
'>': partial,
'=': change_delimiter,
def: interpolate,
text: text
};
var scan_section_parser = {
'!': noop,
'#': begin_section,
'^': begin_section,
'/': end_section,
'&': buffer_section,
'{': buffer_section,
'>': buffer_section,
'=': change_delimiter,
def: buffer_section,
text: buffer_section
};
// no pragmas, easy escape
if(!includes("%", state.template)) {
return state.template;
}

state.template = state.template.replace(/{{%([\w-]+)(\s*)(.*?(?=}}))}}/, function(match, pragma, space, suffix) {
var options = undefined,
optionPairs, scratch,
i, n;
if (suffix.length>0) {
optionPairs = suffix.split(',');
scratch;
options = {};
for (i=0, n=optionPairs.length; i<n; ++i) {
scratch = optionPairs[i].split('=');
if (scratch.length !== 2) {
throw new Error('Malformed pragma options:' + optionPairs[i]);
}
options[scratch[0]] = scratch[1];
}
}
function get_variable_name(state, token, prefix, postfix) {
var fragment = token
.substring(
state.openTag.length + (prefix ? 1 : 0)
, token.length - state.closeTag.length - (postfix ? 1 : 0)
);
if (is_function(directives[pragma])) {
directives[pragma](options);
} else {
throw new Error('This implementation of mustache does not implement the "' + pragma + '" pragma');
}

return ''; // blank out all pragmas
});
if (String.prototype.trim) {
return fragment.trim();
} else {
return fragment.replace(/^\s\s*/, '').replace(/\s\s*$/, '');
}
}
function change_delimiter(state, token) {
@@ -415,7 +482,7 @@ var Mustache = (function(undefined) {
throw new Error('Malformed change delimiter token: ' + token);
}
var context = create_parser_state(
var context = create_compiler_state(
state.tokens.slice(state.cursor+1).join('')
, state.partials
, matches[1]
@@ -425,14 +492,15 @@ var Mustache = (function(undefined) {
state.cursor = state.tokens.length; // finish off this level
parse(context, true);
compile(context, true);
}
function begin_section(state, token, inverted) {
var variable = get_variable_name(state, token, true);
function begin_section(state, token, mark) {
var inverted = mark === '^',
variable = get_variable_name(state, token, true);
if (state.state==='normal') {
state.state = 'scan_section';
if (state.parser===default_parser) {
state.parser = scan_section_parser;
state.section = {
variable: variable
, template_buffer: []
@@ -445,6 +513,10 @@ var Mustache = (function(undefined) {
}
}
function buffer_section(state, token) {
state.section.template_buffer.push(token);
}
function end_section(state, token) {
var variable = get_variable_name(state, token, true);
@@ -456,104 +528,13 @@ var Mustache = (function(undefined) {
} else if (state.section.variable===variable) {
section(state);
delete state.section;
state.state = 'normal';
state.parser = default_parser;
} else {
throw new Error('Unexpected section end tag. Expected: ' + state.section.variable);
}
}
function parse(state, noReturn) {
var n, token;
for (n = state.tokens.length;state.cursor<n;++state.cursor) {
token = state.tokens[state.cursor];
if (token==='' || token===undefined) {
continue;
}
stateMachine[state.state](state, token);
}
if (!noReturn) {
var codeList = state.code;
if (codeList.length === 0) {
return noop;
} else if (codeList.length === 1) {
return codeList[0];
} else {
return function(context, send_func) {
for (var i=0,n=codeList.length;i<n;++i) {
codeList[i](context, send_func);
}
}
}
}
}
var stateMachine = {
'normal': function(state, token) {
if (token.indexOf(state.openTag)===0) {
// the token has the makings of a Mustache tag
// perform the appropriate action based on the state machine
switch (token.charAt(state.openTag.length)) {
case '!': // comment
// comments are just discarded, nothing to do
break;
case '#': // section
begin_section(state, token, false);
break;
case '^': // inverted section
begin_section(state, token, true);
break;
case '/': // end section
// in normal flow, this operation is absolutely meaningless
throw new Error('Unbalanced End Section tag: ' + token);
case '&': // unescaped variable
case '{': // unescaped variable
interpolate(state, token, token.charAt(state.openTag.length));
break;
case '>': // partial
partial(state, token);
break;
case '=': // set delimiter change
change_delimiter(state, token);
break;
default: // escaped variable
interpolate(state, token);
break;
}
} else {
// plain jane text
state.send_code_func(function(view, send_func) { send_func(token); });
}
}
, 'scan_section': function(state, token) {
if (token.indexOf(state.openTag)===0) {
switch (token.charAt(state.openTag.length)) {
case '!': // comments
// comments are just discarded, nothing to do
break;
case '#': // section
begin_section(state, token, false);
break;
case '^': // inverted section
begin_section(state, token, true);
break;
case '/': // end section
end_section(state, token);
break;
case '=': // set delimiter change
change_delimiter(state, token);
break;
default: // all others
state.section.template_buffer.push(token);
break;
}
} else {
state.section.template_buffer.push(token);
}
}
}
/* END Parser */
return({
name: "mustache.js",
@@ -581,7 +562,7 @@ var Mustache = (function(undefined) {
}
}
var program = parse(create_parser_state(template, p));
var program = compile(create_compiler_state(template, p));
return function(view, send_func) {
var o = [],
user_send_func = send_func || function(str) {


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