Subtrack

Semantic Analysis

Master semantic analysis: type checking, symbol tables, and error reporting. Learn how compilers verify program meaning beyond syntactic correctness.

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~360 Minutes 8 Challenges

type checker implementation tutorial

About this subtrack

Semantic Analysis covers symbol tables, scopes, type checking, and error reporting. The intent is "build a type checker," not only name the phases. Pair with syntax analysis so your AST is already trustworthy.

Semantic Analysis

About this subtrack

Tasks (8)

Implement Function Signature Checking (Argument Count and Types)

Detect Use-Before-Declaration and Undefined Variables

Implement Type Inference for a Simple Expression Language

Handle Type Coercion Rules (e.g. int + float = float)

Add Scope Analysis: Detect Variable Shadowing and Dead Code

Type Checking

Symbol Table Management

Semantic Error Reporting