postcss,(plugins): nanocss, postcss-preset-env

1 files changed, 95 insertions, 0 deletions

diff --git a/node_modules/css-tree/lib/syntax/node/Block.js b/node_modules/css-tree/lib/syntax/node/Block.js
new file mode 100644
index 00000000..d0b1a2f5
--- /dev/null
+++ b/node_modules/css-tree/lib/syntax/node/Block.js
@@ -0,0 +1,95 @@
+import {
+    WhiteSpace,
+    Comment,
+    Semicolon,
+    AtKeyword,
+    LeftCurlyBracket,
+    RightCurlyBracket
+} from '../../tokenizer/index.js';
+
+const AMPERSAND = 0x0026;       // U+0026 AMPERSAND (&)
+
+function consumeRaw(startToken) {
+    return this.Raw(startToken, null, true);
+}
+function consumeRule() {
+    return this.parseWithFallback(this.Rule, consumeRaw);
+}
+function consumeRawDeclaration(startToken) {
+    return this.Raw(startToken, this.consumeUntilSemicolonIncluded, true);
+}
+function consumeDeclaration() {
+    if (this.tokenType === Semicolon) {
+        return consumeRawDeclaration.call(this, this.tokenIndex);
+    }
+
+    const node = this.parseWithFallback(this.Declaration, consumeRawDeclaration);
+
+    if (this.tokenType === Semicolon) {
+        this.next();
+    }
+
+    return node;
+}
+
+export const name = 'Block';
+export const walkContext = 'block';
+export const structure = {
+    children: [[
+        'Atrule',
+        'Rule',
+        'Declaration'
+    ]]
+};
+
+export function parse(isStyleBlock) {
+    const consumer = isStyleBlock ? consumeDeclaration : consumeRule;
+    const start = this.tokenStart;
+    let children = this.createList();
+
+    this.eat(LeftCurlyBracket);
+
+    scan:
+    while (!this.eof) {
+        switch (this.tokenType) {
+            case RightCurlyBracket:
+                break scan;
+
+            case WhiteSpace:
+            case Comment:
+                this.next();
+                break;
+
+            case AtKeyword:
+                children.push(this.parseWithFallback(this.Atrule.bind(this, isStyleBlock), consumeRaw));
+                break;
+
+            default:
+                if (isStyleBlock && this.isDelim(AMPERSAND))  {
+                    children.push(consumeRule.call(this));
+                } else {
+                    children.push(consumer.call(this));
+                }
+        }
+    }
+
+    if (!this.eof) {
+        this.eat(RightCurlyBracket);
+    }
+
+    return {
+        type: 'Block',
+        loc: this.getLocation(start, this.tokenStart),
+        children
+    };
+}
+
+export function generate(node) {
+    this.token(LeftCurlyBracket, '{');
+    this.children(node, prev => {
+        if (prev.type === 'Declaration') {
+            this.token(Semicolon, ';');
+        }
+    });
+    this.token(RightCurlyBracket, '}');
+}