Method constructor

deps/v8/tools/profview/profview.js:1533–1570

(file)

class SourceData {
  constructor(file) {
    this.scripts = new Map();
    for (let i = 0; i < file.scripts.length; i++) {
      const scriptBlock = file.scripts[i];
      if (scriptBlock === null) continue; // Array may be sparse.
      if (scriptBlock.source === undefined) continue;
      let source = scriptBlock.source.split("\n");
      this.scripts.set(i, source);
    }

    this.functions = new Map();
    for (let codeId = 0; codeId < file.code.length; ++codeId) {
      let codeBlock = file.code[codeId];
      if (codeBlock.source && codeBlock.func !== undefined) {
        let data = this.functions.get(codeBlock.func);
        if (!data) {
          data = new FunctionSourceData(codeBlock.source.script,
                                        codeBlock.source.start,
                                        codeBlock.source.end);
          this.functions.set(codeBlock.func, data);
        }
        data.addSourceBlock(codeId, codeBlock.source);
      }
    }

    for (let tick of file.ticks) {
      let stack = tick.s;
      for (let i = 0; i < stack.length; i += 2) {
        let codeId = stack[i];
        if (codeId < 0) continue;
        let functionId = file.code[codeId].func;
        if (this.functions.has(functionId)) {
          let codeOffset = stack[i + 1];
          this.functions.get(functionId).addOffsetSample(codeId, codeOffset);
        }
      }
    }
  }

  getScript(scriptId) {
    return this.scripts.get(scriptId);