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node_modules/handlebars/lib/handlebars/compiler/helpers.js

@@ -0,0 +1,210 @@
+import Exception from '../exception';
+
+function validateClose(open, close) {
+  close = close.path ? close.path.original : close;
+
+  if (open.path.original !== close) {
+    let errorNode = {loc: open.path.loc};
+
+    throw new Exception(open.path.original + " doesn't match " + close, errorNode);
+  }
+}
+
+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 (/^\[.*\]$/.test(token)) {
+    return token.substring(1, token.length - 1);
+  } else {
+    return token;
+  }
+}
+
+export function stripFlags(open, close) {
+  return {
+    open: open.charAt(2) === '~',
+    close: close.charAt(close.length - 3) === '~'
+  };
+}
+
+export function stripComment(comment) {
+  return comment.replace(/^\{\{~?!-?-?/, '')
+                .replace(/-?-?~?\}\}$/, '');
+}
+
+export function preparePath(data, parts, loc) {
+  loc = this.locInfo(loc);
+
+  let original = data ? '@' : '',
+      dig = [],
+      depth = 0;
+
+  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++;
+      }
+    } 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 !== '&';
+
+  let decorator = (/\*/.test(open));
+  return {
+    type: decorator ? 'Decorator' : 'MustacheStatement',
+    path,
+    params,
+    hash,
+    escaped,
+    strip,
+    loc: this.locInfo(locInfo)
+  };
+}
+
+export function prepareRawBlock(openRawBlock, contents, close, locInfo) {
+  validateClose(openRawBlock, close);
+
+  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) {
+  if (close && close.path) {
+    validateClose(openBlock, close);
+  }
+
+  let decorator = (/\*/.test(openBlock.open));
+
+  program.blockParams = openBlock.blockParams;
+
+  let inverse,
+      inverseStrip;
+
+  if (inverseAndProgram) {
+    if (decorator) {
+      throw new Exception('Unexpected inverse block on decorator', 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: decorator ? 'DecoratorBlock' : '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(open, program, close, locInfo) {
+  validateClose(open, close);
+
+  return {
+    type: 'PartialBlockStatement',
+    name: open.path,
+    params: open.params,
+    hash: open.hash,
+    program,
+    openStrip: open.strip,
+    closeStrip: close && close.strip,
+    loc: this.locInfo(locInfo)
+  };
+}
+