gas_analysis/
gas_analysis.rs

1//! Gas analysis example for EOT
2//!
3//! Run with: cargo run --example gas_analysis
4
5use eot::gas::{
6    DynamicGasCalculator, ExecutionContext, GasAnalyzer, GasComparator, GasOptimizationAdvisor,
7};
8use eot::Fork;
9
10fn main() {
11    println!("EOT - Gas Analysis Example\n");
12
13    // 1. Dynamic gas calculation
14    println!("== Dynamic Gas (Berlin) ==");
15    let calc = DynamicGasCalculator::new(Fork::Berlin);
16    let mut ctx = ExecutionContext::new();
17
18    let cold = calc.calculate_gas_cost(0x54, &ctx, &[0x100]).unwrap();
19    println!("SLOAD cold: {cold} gas");
20
21    // Warm the slot
22    let key = {
23        let mut k = [0u8; 32];
24        k[24..32].copy_from_slice(&0x100u64.to_be_bytes());
25        k
26    };
27    let addr = ctx.current_address;
28    ctx.mark_storage_accessed(&addr, &key);
29    let warm = calc.calculate_gas_cost(0x54, &ctx, &[0x100]).unwrap();
30    println!("SLOAD warm: {warm} gas");
31    println!();
32
33    // 2. Sequence analysis
34    println!("== Sequence Analysis ==");
35    let seq = [0x60, 0x54, 0x54, 0x01, 0x55];
36    let analysis = GasAnalyzer::analyze_gas_usage(&seq, Fork::London);
37    println!("Total gas: {}", analysis.total_gas);
38    println!("Efficiency: {}%", analysis.efficiency_score());
39    for opt in analysis.get_optimization_recommendations() {
40        println!("  Tip: {opt}");
41    }
42    println!();
43
44    // 3. Fork comparison
45    println!("== Istanbul -> Berlin Changes ==");
46    let report = GasComparator::generate_comparison_report(Fork::Istanbul, Fork::Berlin);
47    report.print_report();
48    println!();
49
50    // 4. Optimization advice
51    println!("== Cancun Optimizations ==");
52    for tip in GasOptimizationAdvisor::get_fork_optimizations(Fork::Cancun) {
53        println!("  - {tip}");
54    }
55}
gas_analysis/gas_analysis.rs

gas_analysis/
gas_analysis.rs
