TOML: Full support of inline table (denoland/deno_std#320)

Original: d16072a334

toml/README.md

@@ -22,7 +22,7 @@ TypeScript side is a bit different.
 - :heavy_check_mark: [Local Date](https://github.com/toml-lang/toml#local-date)
 - :exclamation: [Local Time](https://github.com/toml-lang/toml#local-time)
 - :heavy_check_mark: [Table](https://github.com/toml-lang/toml#table)
-- :exclamation: [Inline Table](https://github.com/toml-lang/toml#inline-table)
+- :heavy_check_mark: [Inline Table](https://github.com/toml-lang/toml#inline-table)
 - :exclamation: [Array of Tables](https://github.com/toml-lang/toml#array-of-tables)
 
 :exclamation: _Supported with warnings see [Warning](#Warning)._
@@ -45,12 +45,18 @@ Because local time does not exist in JavaScript, the local time is stored as a s
 
 #### Inline Table
 
-Inline tables are supported but nested inline property name are **not**. See below:
+Inline tables are supported. See below:
 
 ```toml
-animal = { type = { name = "pug" } } # Supported
+animal = { type = { name = "pug" } }
+# Output
 animal = { type.name = "pug" }
-# not supported. Will output { "animal" : {"type.name":"pug"} }
+# Output { animal : { type : { name : "pug" } }
+animal.as.leaders = "tosin"
+# Output { animal: { as: { leaders: "tosin" } } }
+"tosin.abasi" = "guitarist"
+# Output
+"tosin.abasi" : "guitarist"
 ```
 
 #### Array of Tables

toml/parser.ts

@@ -238,7 +238,6 @@ class Parser {
           .replace(result[2], ":");
         dataString = dataString.replace(ogVal, newVal);
       }
-      // TODO : unflat if necessary
       return JSON.parse(dataString);
     }
 
@@ -271,6 +270,38 @@ class Parser {
     const reg = /\d{4}-\d{2}-\d{2}/;
     return reg.test(dateStr);
   }
+  _parseDeclarationName(declaration: string): string[] {
+    const out = [];
+    let acc = [];
+    let inLitteral = false;
+    for (let i = 0; i < declaration.length; i++) {
+      const c = declaration[i];
+      switch (c) {
+        case ".":
+          if (!inLitteral) {
+            out.push(acc.join(""));
+            acc = [];
+          } else {
+            acc.push(c);
+          }
+          break;
+        case `"`:
+          if (inLitteral) {
+            inLitteral = false;
+          } else {
+            inLitteral = true;
+          }
+          break;
+        default:
+          acc.push(c);
+          break;
+      }
+    }
+    if (acc.length !== 0) {
+      out.push(acc.join(""));
+    }
+    return out;
+  }
   _parseLines(): void {
     for (let i = 0; i < this.tomlLines.length; i++) {
       const line = this.tomlLines[i];
@@ -301,10 +332,12 @@ class Parser {
       }
       if (this._isDeclaration(line)) {
         let kv = this._processDeclaration(line);
+        let key = kv.key;
+        let value = kv.value;
         if (!this.context.currentGroup) {
-          this.context.output[kv.key] = kv.value;
+          this.context.output[key] = value;
         } else {
-          this.context.currentGroup.objValues[kv.key] = kv.value;
+          this.context.currentGroup.objValues[key] = value;
         }
       }
     }
@@ -317,9 +350,33 @@ class Parser {
       this._groupToOutput();
     }
   }
+  _cleanOutput(): void {
+    this._propertyClean(this.context.output);
+  }
+  _propertyClean(obj: object): void {
+    const keys = Object.keys(obj);
+    for (let i = 0; i < keys.length; i++) {
+      let k = keys[i];
+      let v = obj[k];
+      let pathDeclaration = this._parseDeclarationName(k);
+      delete obj[k];
+      if (pathDeclaration.length > 1) {
+        k = pathDeclaration.shift();
+        k = k.replace(/"/g, "");
+        v = this._unflat(pathDeclaration, v as object);
+      } else {
+        k = k.replace(/"/g, "");
+      }
+      obj[k] = v;
+      if (v instanceof Object) {
+        this._propertyClean(v);
+      }
+    }
+  }
   parse(): object {
     this._sanitize();
     this._parseLines();
+    this._cleanOutput();
     return this.context.output;
   }
 }

toml/parser_test.ts

@@ -181,6 +181,20 @@ test({
   fn() {
     const expected = {
       inlinetable: {
+        nile: {
+          also: {
+            malevolant: {
+              creation: {
+                drum: {
+                  kit: "Tama"
+                }
+              }
+            }
+          },
+          derek: {
+            roddy: "drummer"
+          }
+        },
         name: {
           first: "Tom",
           last: "Preston-Werner"
@@ -189,10 +203,16 @@ test({
           x: 1,
           y: 2
         },
-        animal: {
+        dog: {
           type: {
             name: "pug"
           }
+        },
+        "tosin.abasi": "guitarist",
+        animal: {
+          as: {
+            leaders: "tosin"
+          }
         }
       }
     };

toml/testdata/inlineTable.toml

@@ -1,4 +1,7 @@
 [inlinetable]
 name = { first = "Tom", last = "Preston-Werner" }
 point = { x = 1, y = 2 }
-animal = { type = { name = "pug" } }
+dog = { type = { name = "pug" } }
+animal.as.leaders = "tosin"
+"tosin.abasi" = "guitarist"
+nile = { derek.roddy = "drummer", also = { malevolant.creation = { drum.kit = "Tama" } } }