47 lines
1.7 KiB
C++
47 lines
1.7 KiB
C++
#pragma once
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#include <string>
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#include <unordered_map>
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#include <vector>
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#include "sedpp/Command.h"
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#include "sedpp/Options.h"
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namespace sedpp {
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// Converts raw -e/-f script text into a flat Program. The compiler is deliberately
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// syntax-oriented; command range state and "last regex" behavior are resolved by
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// Runner because they depend on input cycles.
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class Compiler {
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public:
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explicit Compiler(const Options &options);
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[[nodiscard]] Program compile(const std::vector<std::string> &scripts);
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[[nodiscard]] const std::unordered_map<std::string, std::size_t> &labels() const {
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return labels_;
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}
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private:
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// Script parsing is a small cursor parser because sed syntax is compact and
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// delimiter-driven; tokenizing first tends to lose useful byte positions.
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void compileOne(const std::string &script);
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[[nodiscard]] std::optional<Address> parseAddress(const std::string &script,
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std::size_t &pos,
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bool secondAddress);
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[[nodiscard]] std::string parseDelimited(const std::string &script,
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std::size_t &pos, char delimiter,
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bool regexMode = false,
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bool unescapeDelimiter = false);
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[[nodiscard]] std::string readUntilCommandEnd(const std::string &script,
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std::size_t &pos);
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static void skipBlanks(const std::string &script, std::size_t &pos);
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static void skipSeparators(const std::string &script, std::size_t &pos);
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const Options &options_;
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Program program_;
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std::unordered_map<std::string, std::size_t> labels_;
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int braceDepth_ = 0;
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};
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} // namespace sedpp
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