mirror of
https://github.com/ton-blockchain/ton
synced 2025-02-12 19:22:37 +00:00
3540424aa1
This is a huge refactoring focusing on untangling compiler internals (previously forked from FunC). The goal is to convert AST directly to Op (a kind of IR representation), doing all code analysis at AST level. Noteable changes: - AST-based semantic kernel includes: registering global symbols, scope handling and resolving local/global identifiers, lvalue/rvalue calc and check, implicit return detection, mutability analysis, pure/impure validity checks, simple constant folding - values of `const` variables are calculated NOT based on CodeBlob, but via a newly-introduced AST-based constant evaluator - AST vertices are now inherited from expression/statement/other; expression vertices have common properties (TypeExpr, lvalue/rvalue) - symbol table is rewritten completely, SymDef/SymVal no longer exist, lexer now doesn't need to register identifiers - AST vertices have references to symbols, filled at different stages of pipeline - the remaining "FunC legacy part" is almost unchanged besides Expr which was fully dropped; AST is converted to Ops (IR) directly
96 lines
1.5 KiB
Text
96 lines
1.5 KiB
Text
@method_id(101)
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fun test1(): int {
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var x = false;
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if (x == true) {
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x= 100500;
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}
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return x;
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}
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fun main(s: int) {
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var (z, t) = (17, s);
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while (z > 0) {
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t = s;
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z -= 1;
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}
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return ~ t;
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}
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/**
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method_id | in | out
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@testcase | 0 | 1 | -2
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@testcase | 0 | 5 | -6
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@testcase | 101 | | 0
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Below, I just give examples of @fif_codegen tag:
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* a pattern can be single-line (after the tag), or multi-line, surrounded with """
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* there may be multiple @fif_codegen, they all will be checked
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* identation (spaces) is not checked intentionally
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* "..." means any number of any lines
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* lines not divided with "..." are expected to be consecutive in fif output
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* //comments can be omitted, but if present, they are also expected to be equal
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* there is also a tag @fif_codegen_avoid to check a pattern does not occur
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@fif_codegen
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"""
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main PROC:<{
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// s
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17 PUSHINT // s _1=17
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OVER // s z=17 t
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WHILE:<{
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...
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}>DO<{ // s z t
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...
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s1 s(-1) PUXC // s t z
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...
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2 1 BLKDROP2
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...
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}>
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"""
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@fif_codegen
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"""
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main PROC:<{
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...
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WHILE:<{
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...
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}>DO<{
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...
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}>
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}END>c
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"""
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@fif_codegen
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"""
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OVER
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0 GTINT // s z t _5
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"""
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@fif_codegen
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"""
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"Asm.fif" include
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...
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PROGRAM{
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...
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}END>c
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"""
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@fif_codegen
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"""
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test1 PROC:<{
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//
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FALSE
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}>
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"""
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@fif_codegen NOT // _8
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@fif_codegen main PROC:<{
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@fif_codegen_avoid PROCINLINE
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@fif_codegen_avoid END c
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@fif_codegen_avoid
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"""
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multiline
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can also be
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"""
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*/
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