diff options
Diffstat (limited to 'packages/astro-parser/src/parse/state/mustache.ts')
| -rw-r--r-- | packages/astro-parser/src/parse/state/mustache.ts | 784 |
1 files changed, 392 insertions, 392 deletions
diff --git a/packages/astro-parser/src/parse/state/mustache.ts b/packages/astro-parser/src/parse/state/mustache.ts index d07162049..9300627e1 100644 --- a/packages/astro-parser/src/parse/state/mustache.ts +++ b/packages/astro-parser/src/parse/state/mustache.ts @@ -9,404 +9,404 @@ import { TemplateNode } from '../../interfaces.js'; type TODO = any; function trim_whitespace(block: TemplateNode, trim_before: boolean, trim_after: boolean) { - if (!block.children || block.children.length === 0) return; // AwaitBlock + if (!block.children || block.children.length === 0) return; // AwaitBlock - const first_child = block.children[0]; - const last_child = block.children[block.children.length - 1]; + const first_child = block.children[0]; + const last_child = block.children[block.children.length - 1]; - if (first_child.type === 'Text' && trim_before) { - first_child.data = first_child.data.trimStart(); - if (!first_child.data) block.children.shift(); - } + if (first_child.type === 'Text' && trim_before) { + first_child.data = first_child.data.trimStart(); + if (!first_child.data) block.children.shift(); + } - if (last_child.type === 'Text' && trim_after) { - last_child.data = last_child.data.trimEnd(); - if (!last_child.data) block.children.pop(); - } + if (last_child.type === 'Text' && trim_after) { + last_child.data = last_child.data.trimEnd(); + if (!last_child.data) block.children.pop(); + } - if (block.else) { - trim_whitespace(block.else, trim_before, trim_after); - } + if (block.else) { + trim_whitespace(block.else, trim_before, trim_after); + } - if (first_child.elseif) { - trim_whitespace(first_child, trim_before, trim_after); - } + if (first_child.elseif) { + trim_whitespace(first_child, trim_before, trim_after); + } } export default function mustache(parser: Parser) { - const start = parser.index; - parser.index += 1; - - parser.allow_whitespace(); - - // {/if}, {/each}, {/await} or {/key} - if (parser.eat('/')) { - let block = parser.current(); - let expected: TODO; - - if (closing_tag_omitted(block.name)) { - block.end = start; - parser.stack.pop(); - block = parser.current(); - } - - if (block.type === 'ElseBlock' || block.type === 'PendingBlock' || block.type === 'ThenBlock' || block.type === 'CatchBlock') { - block.end = start; - parser.stack.pop(); - block = parser.current(); - - expected = 'await'; - } - - if (block.type === 'IfBlock') { - expected = 'if'; - } else if (block.type === 'EachBlock') { - expected = 'each'; - } else if (block.type === 'AwaitBlock') { - expected = 'await'; - } else if (block.type === 'KeyBlock') { - expected = 'key'; - } else { - parser.error({ - code: 'unexpected-block-close', - message: 'Unexpected block closing tag', - }); - } - - parser.eat(expected, true); - parser.allow_whitespace(); - parser.eat('}', true); - - while (block.elseif) { - block.end = parser.index; - parser.stack.pop(); - block = parser.current(); - - if (block.else) { - block.else.end = start; - } - } - - // strip leading/trailing whitespace as necessary - const char_before = parser.template[block.start - 1]; - const char_after = parser.template[parser.index]; - const trim_before = !char_before || whitespace.test(char_before); - const trim_after = !char_after || whitespace.test(char_after); - - trim_whitespace(block, trim_before, trim_after); - - block.end = parser.index; - parser.stack.pop(); - } else if (parser.eat(':else')) { - if (parser.eat('if')) { - parser.error({ - code: 'invalid-elseif', - message: "'elseif' should be 'else if'", - }); - } - - parser.allow_whitespace(); - - // :else if - if (parser.eat('if')) { - const block = parser.current(); - if (block.type !== 'IfBlock') { - parser.error({ - code: 'invalid-elseif-placement', - message: parser.stack.some((block) => block.type === 'IfBlock') - ? `Expected to close ${to_string(block)} before seeing {:else if ...} block` - : 'Cannot have an {:else if ...} block outside an {#if ...} block', - }); - } - - parser.require_whitespace(); - - const expression = read_expression(parser); - - parser.allow_whitespace(); - parser.eat('}', true); - - block.else = { - start: parser.index, - end: null, - type: 'ElseBlock', - children: [ - { - start: parser.index, - end: null, - type: 'IfBlock', - elseif: true, - expression, - children: [], - }, - ], - }; - - parser.stack.push(block.else.children[0]); - } else { - // :else - const block = parser.current(); - if (block.type !== 'IfBlock' && block.type !== 'EachBlock') { - parser.error({ - code: 'invalid-else-placement', - message: parser.stack.some((block) => block.type === 'IfBlock' || block.type === 'EachBlock') - ? `Expected to close ${to_string(block)} before seeing {:else} block` - : 'Cannot have an {:else} block outside an {#if ...} or {#each ...} block', - }); - } - - parser.allow_whitespace(); - parser.eat('}', true); - - block.else = { - start: parser.index, - end: null, - type: 'ElseBlock', - children: [], - }; - - parser.stack.push(block.else); - } - } else if (parser.match(':then') || parser.match(':catch')) { - const block = parser.current(); - const is_then = parser.eat(':then') || !parser.eat(':catch'); - - if (is_then) { - if (block.type !== 'PendingBlock') { - parser.error({ - code: 'invalid-then-placement', - message: parser.stack.some((block) => block.type === 'PendingBlock') - ? `Expected to close ${to_string(block)} before seeing {:then} block` - : 'Cannot have an {:then} block outside an {#await ...} block', - }); - } - } else { - if (block.type !== 'ThenBlock' && block.type !== 'PendingBlock') { - parser.error({ - code: 'invalid-catch-placement', - message: parser.stack.some((block) => block.type === 'ThenBlock' || block.type === 'PendingBlock') - ? `Expected to close ${to_string(block)} before seeing {:catch} block` - : 'Cannot have an {:catch} block outside an {#await ...} block', - }); - } - } - - block.end = start; - parser.stack.pop(); - const await_block = parser.current(); - - if (!parser.eat('}')) { - parser.require_whitespace(); - await_block[is_then ? 'value' : 'error'] = read_context(parser); - parser.allow_whitespace(); - parser.eat('}', true); - } - - const new_block: TemplateNode = { - start, - // @ts-ignore - end: null, - type: is_then ? 'ThenBlock' : 'CatchBlock', - children: [], - skip: false, - }; - - await_block[is_then ? 'then' : 'catch'] = new_block; - parser.stack.push(new_block); - } else if (parser.eat('#')) { - // {#if foo}, {#each foo} or {#await foo} - let type; - - if (parser.eat('if')) { - type = 'IfBlock'; - } else if (parser.eat('each')) { - type = 'EachBlock'; - } else if (parser.eat('await')) { - type = 'AwaitBlock'; - } else if (parser.eat('key')) { - type = 'KeyBlock'; - } else { - parser.error({ - code: 'expected-block-type', - message: 'Expected if, each, await or key', - }); - } - - parser.require_whitespace(); - - const expression = read_expression(parser); - - // @ts-ignore - const block: TemplateNode = - type === 'AwaitBlock' - ? { - start, - end: null, - type, - expression, - value: null, - error: null, - pending: { - start: null, - end: null, - type: 'PendingBlock', - children: [], - skip: true, - }, - then: { - start: null, - end: null, - type: 'ThenBlock', - children: [], - skip: true, - }, - catch: { - start: null, - end: null, - type: 'CatchBlock', - children: [], - skip: true, - }, - } - : { - start, - end: null, - type, - expression, - children: [], - }; - - parser.allow_whitespace(); - - // {#each} blocks must declare a context – {#each list as item} - if (type === 'EachBlock') { - parser.eat('as', true); - parser.require_whitespace(); - - block.context = read_context(parser); - - parser.allow_whitespace(); - - if (parser.eat(',')) { - parser.allow_whitespace(); - block.index = parser.read_identifier(); - if (!block.index) { - parser.error({ - code: 'expected-name', - message: 'Expected name', - }); - } - - parser.allow_whitespace(); - } - - if (parser.eat('(')) { - parser.allow_whitespace(); - - block.key = read_expression(parser); - parser.allow_whitespace(); - parser.eat(')', true); - parser.allow_whitespace(); - } - } - - const await_block_shorthand = type === 'AwaitBlock' && parser.eat('then'); - if (await_block_shorthand) { - parser.require_whitespace(); - block.value = read_context(parser); - parser.allow_whitespace(); - } - - const await_block_catch_shorthand = !await_block_shorthand && type === 'AwaitBlock' && parser.eat('catch'); - if (await_block_catch_shorthand) { - parser.require_whitespace(); - block.error = read_context(parser); - parser.allow_whitespace(); - } - - parser.eat('}', true); - - // @ts-ignore - parser.current().children.push(block); - parser.stack.push(block); - - if (type === 'AwaitBlock') { - let child_block; - if (await_block_shorthand) { - block.then.skip = false; - child_block = block.then; - } else if (await_block_catch_shorthand) { - block.catch.skip = false; - child_block = block.catch; - } else { - block.pending.skip = false; - child_block = block.pending; - } - - child_block.start = parser.index; - parser.stack.push(child_block); - } - } else if (parser.eat('@html')) { - // {@html content} tag - parser.require_whitespace(); - - const expression = read_expression(parser); - - parser.allow_whitespace(); - parser.eat('}', true); - - // @ts-ignore - parser.current().children.push({ - start, - end: parser.index, - type: 'RawMustacheTag', - expression, - }); - } else if (parser.eat('@debug')) { - // let identifiers; - - // // Implies {@debug} which indicates "debug all" - // if (parser.read(/\s*}/)) { - // identifiers = []; - // } else { - // const expression = read_expression(parser); - - // identifiers = expression.type === 'SequenceExpression' - // ? expression.expressions - // : [expression]; - - // identifiers.forEach(node => { - // if (node.type !== 'Identifier') { - // parser.error({ - // code: 'invalid-debug-args', - // message: '{@debug ...} arguments must be identifiers, not arbitrary expressions' - // }, node.start); - // } - // }); - - // parser.allow_whitespace(); - // parser.eat('}', true); - // } - - // parser.current().children.push({ - // start, - // end: parser.index, - // type: 'DebugTag', - // identifiers - // }); - throw new Error('@debug not yet supported'); - } else { - const expression = read_expression(parser); - - parser.allow_whitespace(); - parser.eat('}', true); - - // @ts-ignore - parser.current().children.push({ - start, - end: parser.index, - type: 'MustacheTag', - expression, - }); - } + const start = parser.index; + parser.index += 1; + + parser.allow_whitespace(); + + // {/if}, {/each}, {/await} or {/key} + if (parser.eat('/')) { + let block = parser.current(); + let expected: TODO; + + if (closing_tag_omitted(block.name)) { + block.end = start; + parser.stack.pop(); + block = parser.current(); + } + + if (block.type === 'ElseBlock' || block.type === 'PendingBlock' || block.type === 'ThenBlock' || block.type === 'CatchBlock') { + block.end = start; + parser.stack.pop(); + block = parser.current(); + + expected = 'await'; + } + + if (block.type === 'IfBlock') { + expected = 'if'; + } else if (block.type === 'EachBlock') { + expected = 'each'; + } else if (block.type === 'AwaitBlock') { + expected = 'await'; + } else if (block.type === 'KeyBlock') { + expected = 'key'; + } else { + parser.error({ + code: 'unexpected-block-close', + message: 'Unexpected block closing tag', + }); + } + + parser.eat(expected, true); + parser.allow_whitespace(); + parser.eat('}', true); + + while (block.elseif) { + block.end = parser.index; + parser.stack.pop(); + block = parser.current(); + + if (block.else) { + block.else.end = start; + } + } + + // strip leading/trailing whitespace as necessary + const char_before = parser.template[block.start - 1]; + const char_after = parser.template[parser.index]; + const trim_before = !char_before || whitespace.test(char_before); + const trim_after = !char_after || whitespace.test(char_after); + + trim_whitespace(block, trim_before, trim_after); + + block.end = parser.index; + parser.stack.pop(); + } else if (parser.eat(':else')) { + if (parser.eat('if')) { + parser.error({ + code: 'invalid-elseif', + message: "'elseif' should be 'else if'", + }); + } + + parser.allow_whitespace(); + + // :else if + if (parser.eat('if')) { + const block = parser.current(); + if (block.type !== 'IfBlock') { + parser.error({ + code: 'invalid-elseif-placement', + message: parser.stack.some((block) => block.type === 'IfBlock') + ? `Expected to close ${to_string(block)} before seeing {:else if ...} block` + : 'Cannot have an {:else if ...} block outside an {#if ...} block', + }); + } + + parser.require_whitespace(); + + const expression = read_expression(parser); + + parser.allow_whitespace(); + parser.eat('}', true); + + block.else = { + start: parser.index, + end: null, + type: 'ElseBlock', + children: [ + { + start: parser.index, + end: null, + type: 'IfBlock', + elseif: true, + expression, + children: [], + }, + ], + }; + + parser.stack.push(block.else.children[0]); + } else { + // :else + const block = parser.current(); + if (block.type !== 'IfBlock' && block.type !== 'EachBlock') { + parser.error({ + code: 'invalid-else-placement', + message: parser.stack.some((block) => block.type === 'IfBlock' || block.type === 'EachBlock') + ? `Expected to close ${to_string(block)} before seeing {:else} block` + : 'Cannot have an {:else} block outside an {#if ...} or {#each ...} block', + }); + } + + parser.allow_whitespace(); + parser.eat('}', true); + + block.else = { + start: parser.index, + end: null, + type: 'ElseBlock', + children: [], + }; + + parser.stack.push(block.else); + } + } else if (parser.match(':then') || parser.match(':catch')) { + const block = parser.current(); + const is_then = parser.eat(':then') || !parser.eat(':catch'); + + if (is_then) { + if (block.type !== 'PendingBlock') { + parser.error({ + code: 'invalid-then-placement', + message: parser.stack.some((block) => block.type === 'PendingBlock') + ? `Expected to close ${to_string(block)} before seeing {:then} block` + : 'Cannot have an {:then} block outside an {#await ...} block', + }); + } + } else { + if (block.type !== 'ThenBlock' && block.type !== 'PendingBlock') { + parser.error({ + code: 'invalid-catch-placement', + message: parser.stack.some((block) => block.type === 'ThenBlock' || block.type === 'PendingBlock') + ? `Expected to close ${to_string(block)} before seeing {:catch} block` + : 'Cannot have an {:catch} block outside an {#await ...} block', + }); + } + } + + block.end = start; + parser.stack.pop(); + const await_block = parser.current(); + + if (!parser.eat('}')) { + parser.require_whitespace(); + await_block[is_then ? 'value' : 'error'] = read_context(parser); + parser.allow_whitespace(); + parser.eat('}', true); + } + + const new_block: TemplateNode = { + start, + // @ts-ignore + end: null, + type: is_then ? 'ThenBlock' : 'CatchBlock', + children: [], + skip: false, + }; + + await_block[is_then ? 'then' : 'catch'] = new_block; + parser.stack.push(new_block); + } else if (parser.eat('#')) { + // {#if foo}, {#each foo} or {#await foo} + let type; + + if (parser.eat('if')) { + type = 'IfBlock'; + } else if (parser.eat('each')) { + type = 'EachBlock'; + } else if (parser.eat('await')) { + type = 'AwaitBlock'; + } else if (parser.eat('key')) { + type = 'KeyBlock'; + } else { + parser.error({ + code: 'expected-block-type', + message: 'Expected if, each, await or key', + }); + } + + parser.require_whitespace(); + + const expression = read_expression(parser); + + // @ts-ignore + const block: TemplateNode = + type === 'AwaitBlock' + ? { + start, + end: null, + type, + expression, + value: null, + error: null, + pending: { + start: null, + end: null, + type: 'PendingBlock', + children: [], + skip: true, + }, + then: { + start: null, + end: null, + type: 'ThenBlock', + children: [], + skip: true, + }, + catch: { + start: null, + end: null, + type: 'CatchBlock', + children: [], + skip: true, + }, + } + : { + start, + end: null, + type, + expression, + children: [], + }; + + parser.allow_whitespace(); + + // {#each} blocks must declare a context – {#each list as item} + if (type === 'EachBlock') { + parser.eat('as', true); + parser.require_whitespace(); + + block.context = read_context(parser); + + parser.allow_whitespace(); + + if (parser.eat(',')) { + parser.allow_whitespace(); + block.index = parser.read_identifier(); + if (!block.index) { + parser.error({ + code: 'expected-name', + message: 'Expected name', + }); + } + + parser.allow_whitespace(); + } + + if (parser.eat('(')) { + parser.allow_whitespace(); + + block.key = read_expression(parser); + parser.allow_whitespace(); + parser.eat(')', true); + parser.allow_whitespace(); + } + } + + const await_block_shorthand = type === 'AwaitBlock' && parser.eat('then'); + if (await_block_shorthand) { + parser.require_whitespace(); + block.value = read_context(parser); + parser.allow_whitespace(); + } + + const await_block_catch_shorthand = !await_block_shorthand && type === 'AwaitBlock' && parser.eat('catch'); + if (await_block_catch_shorthand) { + parser.require_whitespace(); + block.error = read_context(parser); + parser.allow_whitespace(); + } + + parser.eat('}', true); + + // @ts-ignore + parser.current().children.push(block); + parser.stack.push(block); + + if (type === 'AwaitBlock') { + let child_block; + if (await_block_shorthand) { + block.then.skip = false; + child_block = block.then; + } else if (await_block_catch_shorthand) { + block.catch.skip = false; + child_block = block.catch; + } else { + block.pending.skip = false; + child_block = block.pending; + } + + child_block.start = parser.index; + parser.stack.push(child_block); + } + } else if (parser.eat('@html')) { + // {@html content} tag + parser.require_whitespace(); + + const expression = read_expression(parser); + + parser.allow_whitespace(); + parser.eat('}', true); + + // @ts-ignore + parser.current().children.push({ + start, + end: parser.index, + type: 'RawMustacheTag', + expression, + }); + } else if (parser.eat('@debug')) { + // let identifiers; + + // // Implies {@debug} which indicates "debug all" + // if (parser.read(/\s*}/)) { + // identifiers = []; + // } else { + // const expression = read_expression(parser); + + // identifiers = expression.type === 'SequenceExpression' + // ? expression.expressions + // : [expression]; + + // identifiers.forEach(node => { + // if (node.type !== 'Identifier') { + // parser.error({ + // code: 'invalid-debug-args', + // message: '{@debug ...} arguments must be identifiers, not arbitrary expressions' + // }, node.start); + // } + // }); + + // parser.allow_whitespace(); + // parser.eat('}', true); + // } + + // parser.current().children.push({ + // start, + // end: parser.index, + // type: 'DebugTag', + // identifiers + // }); + throw new Error('@debug not yet supported'); + } else { + const expression = read_expression(parser); + + parser.allow_whitespace(); + parser.eat('}', true); + + // @ts-ignore + parser.current().children.push({ + start, + end: parser.index, + type: 'MustacheTag', + expression, + }); + } } |