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import Exception from '../exception';
export function SourceLocation(source, locInfo) {
this.source = source;
this.start = {
line: locInfo.first_line,
column: locInfo.first_column
};
this.end = {
line: locInfo.last_line,
column: locInfo.last_column
};
}
export function id(token) {
if (/^\[.*\]$/.test(token)) {
return token.substr(1, token.length - 2);
} else {
return token;
}
}
export function stripFlags(open, close) {
return {
open: open.charAt(2) === '~',
close: close.charAt(close.length - 3) === '~'
};
}
export function stripComment(comment) {
return comment.replace(/^\{\{~?\!-?-?/, '')
.replace(/-?-?~?\}\}$/, '');
}
export function preparePath(data, parts, loc) {
loc = this.locInfo(loc);
let original = data ? '@' : '',
dig = [],
depth = 0,
depthString = '';
for (let i = 0, l = parts.length; i < l; i++) {
let part = parts[i].part,
// If we have [] syntax then we do not treat path references as operators,
// i.e. foo.[this] resolves to approximately context.foo['this']
isLiteral = parts[i].original !== part;
original += (parts[i].separator || '') + part;
if (!isLiteral && (part === '..' || part === '.' || part === 'this')) {
if (dig.length > 0) {
throw new Exception('Invalid path: ' + original, {loc});
} else if (part === '..') {
depth++;
depthString += '../';
}
} else {
dig.push(part);
}
}
return {
type: 'PathExpression',
data,
depth,
parts: dig,
original,
loc
};
}
export function prepareMustache(path, params, hash, open, strip, locInfo) {
// Must use charAt to support IE pre-10
let escapeFlag = open.charAt(3) || open.charAt(2),
escaped = escapeFlag !== '{' && escapeFlag !== '&';
return {
type: 'MustacheStatement',
path,
params,
hash,
escaped,
strip,
loc: this.locInfo(locInfo)
};
}
export function prepareRawBlock(openRawBlock, contents, close, locInfo) {
if (openRawBlock.path.original !== close) {
let errorNode = {loc: openRawBlock.path.loc};
throw new Exception(openRawBlock.path.original + " doesn't match " + close, errorNode);
}
locInfo = this.locInfo(locInfo);
let program = {
type: 'Program',
body: contents,
strip: {},
loc: locInfo
};
return {
type: 'BlockStatement',
path: openRawBlock.path,
params: openRawBlock.params,
hash: openRawBlock.hash,
program,
openStrip: {},
inverseStrip: {},
closeStrip: {},
loc: locInfo
};
}
export function prepareBlock(openBlock, program, inverseAndProgram, close, inverted, locInfo) {
// When we are chaining inverse calls, we will not have a close path
if (close && close.path && openBlock.path.original !== close.path.original) {
let errorNode = {loc: openBlock.path.loc};
throw new Exception(openBlock.path.original + ' doesn\'t match ' + close.path.original, errorNode);
}
program.blockParams = openBlock.blockParams;
let inverse,
inverseStrip;
if (inverseAndProgram) {
if (inverseAndProgram.chain) {
inverseAndProgram.program.body[0].closeStrip = close.strip;
}
inverseStrip = inverseAndProgram.strip;
inverse = inverseAndProgram.program;
}
if (inverted) {
inverted = inverse;
inverse = program;
program = inverted;
}
return {
type: 'BlockStatement',
path: openBlock.path,
params: openBlock.params,
hash: openBlock.hash,
program,
inverse,
openStrip: openBlock.strip,
inverseStrip,
closeStrip: close && close.strip,
loc: this.locInfo(locInfo)
};
}
export function prepareProgram(statements, loc) {
if (!loc && statements.length) {
const firstLoc = statements[0].loc,
lastLoc = statements[statements.length - 1].loc;
/* istanbul ignore else */
if (firstLoc && lastLoc) {
loc = {
source: firstLoc.source,
start: {
line: firstLoc.start.line,
column: firstLoc.start.column
},
end: {
line: lastLoc.end.line,
column: lastLoc.end.column
}
};
}
}
return {
type: 'Program',
body: statements,
strip: {},
loc: loc
};
}
export function preparePartialBlock(openPartialBlock, program, close, locInfo) {
if (openPartialBlock.name.original !== close.path.original) {
let errorNode = {loc: openPartialBlock.name.loc};
throw new Exception(openPartialBlock.name.original + " doesn't match " + close.path.original, errorNode);
}
return {
type: 'PartialBlockStatement',
path: openPartialBlock.name,
params: openPartialBlock.params,
hash: openPartialBlock.hash,
program,
openStrip: openPartialBlock.strip,
closeStrip: close && close.strip,
loc: this.locInfo(locInfo)
};
}
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