mirror of
https://github.com/irmen/prog8.git
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327 lines
13 KiB
Kotlin
327 lines
13 KiB
Kotlin
package prog8tests.ast
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import io.kotest.core.spec.style.FunSpec
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import io.kotest.matchers.shouldBe
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import io.kotest.matchers.shouldNotBe
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import io.kotest.matchers.types.instanceOf
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import prog8.ast.expressions.AddressOf
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import prog8.ast.expressions.BinaryExpression
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import prog8.ast.expressions.IdentifierReference
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import prog8.ast.expressions.NumericLiteral
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import prog8.ast.statements.Assignment
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import prog8.ast.statements.Return
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import prog8.ast.statements.VarDecl
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import prog8.ast.statements.VarDeclType
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import prog8.code.core.BaseDataType
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import prog8.code.core.Position
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import prog8.code.target.C64Target
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import prog8.code.target.Cx16Target
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import prog8tests.helpers.compileText
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class TestConst: FunSpec({
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test("const folding multiple scenarios +/-") {
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val source = """
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main {
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const ubyte boardHeightC = 20
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const ubyte boardOffsetC = 3
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sub start() {
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uword @shared load_location = 12345
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word @shared llw = 12345
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cx16.r0 = load_location + 8000 + 1000 + 1000
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cx16.r2 = 8000 + 1000 + 1000 + load_location
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cx16.r4 = load_location + boardOffsetC + boardHeightC - 1
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cx16.r5s = llw - 900 - 999
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cx16.r7s = llw - 900 + 999
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}
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}"""
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val result = compileText(C64Target(), true, source, writeAssembly = false)!!
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// expected:
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// uword load_location
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// load_location = 12345
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// word llw
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// llw = 12345
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// cx16.r0 = load_location + 10000
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// cx16.r2 = load_location + 10000
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// cx16.r4 = load_location + 22
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// cx16.r5s = llw - 1899
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// cx16.r7s = llw + 99
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val stmts = result.compilerAst.entrypoint.statements
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stmts.size shouldBe 9
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val addR0value = (stmts[4] as Assignment).value
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val binexpr0 = addR0value as BinaryExpression
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binexpr0.operator shouldBe "+"
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binexpr0.right shouldBe NumericLiteral(BaseDataType.UWORD, 10000.0, Position.DUMMY)
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val addR2value = (stmts[5] as Assignment).value
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val binexpr2 = addR2value as BinaryExpression
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binexpr2.operator shouldBe "+"
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binexpr2.right shouldBe NumericLiteral(BaseDataType.UWORD, 10000.0, Position.DUMMY)
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val addR4value = (stmts[6] as Assignment).value
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val binexpr4 = addR4value as BinaryExpression
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binexpr4.operator shouldBe "+"
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binexpr4.right shouldBe NumericLiteral(BaseDataType.UWORD, 22.0, Position.DUMMY)
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val subR5value = (stmts[7] as Assignment).value
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val binexpr5 = subR5value as BinaryExpression
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binexpr5.operator shouldBe "-"
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binexpr5.right shouldBe NumericLiteral(BaseDataType.WORD, 1899.0, Position.DUMMY)
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val subR7value = (stmts[8] as Assignment).value
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val binexpr7 = subR7value as BinaryExpression
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binexpr7.operator shouldBe "+"
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binexpr7.right shouldBe NumericLiteral(BaseDataType.WORD, 99.0, Position.DUMMY)
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}
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test("const folding multiple scenarios * and / (floats)") {
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val source = """
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%option enable_floats
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main {
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sub start() {
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float @shared llw = 300.0
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float @shared result
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result = 9 * 2 * 10 * llw
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result++
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result = llw * 9 * 2 * 10
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result++
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result = llw / 30 / 3
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result++
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result = llw / 2 * 10
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result++
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result = llw * 90 / 5
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}
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}"""
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val result = compileText(C64Target(), true, source, writeAssembly = false)!!
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// expected:
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// float llw
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// llw = 300.0
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// float result
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// result = llw * 180.0
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// result++
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// result = llw * 180.0
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// result++
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// result = llw / 90.0
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// result++
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// result = llw * 5.0
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// result++
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// result = llw * 18.0
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val stmts = result.compilerAst.entrypoint.statements
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stmts.size shouldBe 12
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val mulR0Value = (stmts[3] as Assignment).value
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val binexpr0 = mulR0Value as BinaryExpression
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binexpr0.operator shouldBe "*"
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binexpr0.right shouldBe NumericLiteral(BaseDataType.FLOAT, 180.0, Position.DUMMY)
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val mulR1Value = (stmts[5] as Assignment).value
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val binexpr1 = mulR1Value as BinaryExpression
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binexpr1.operator shouldBe "*"
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binexpr1.right shouldBe NumericLiteral(BaseDataType.FLOAT, 180.0, Position.DUMMY)
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val divR2Value = (stmts[7] as Assignment).value
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val binexpr2 = divR2Value as BinaryExpression
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binexpr2.operator shouldBe "/"
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binexpr2.right shouldBe NumericLiteral(BaseDataType.FLOAT, 90.0, Position.DUMMY)
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val mulR3Value = (stmts[9] as Assignment).value
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val binexpr3 = mulR3Value as BinaryExpression
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binexpr3.operator shouldBe "*"
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binexpr3.right shouldBe NumericLiteral(BaseDataType.FLOAT, 5.0, Position.DUMMY)
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binexpr3.left shouldBe instanceOf<IdentifierReference>()
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val mulR4Value = (stmts[11] as Assignment).value
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val binexpr4 = mulR4Value as BinaryExpression
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binexpr4.operator shouldBe "*"
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binexpr4.right shouldBe NumericLiteral(BaseDataType.FLOAT, 18.0, Position.DUMMY)
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binexpr4.left shouldBe instanceOf<IdentifierReference>()
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}
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test("const folding multiple scenarios * and / (integers)") {
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val source = """
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main {
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sub start() {
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word @shared llw = 300
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cx16.r0s = 9 * 2 * 10 * llw
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cx16.r1s = llw * 9 * 2 * 10
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cx16.r2s = llw / 30 / 3
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cx16.r3s = llw / 2 * 10
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cx16.r4s = llw * 90 / 5 ; not optimized because of loss of integer division precision
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}
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}"""
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val result = compileText(C64Target(), true, source, writeAssembly = false)!!
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// expected:
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// word llw
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// llw = 300
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// cx16.r0s = llw * 180
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// cx16.r1s = llw * 180
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// cx16.r2s = llw / 90
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// cx16.r3s = llw /2 *10
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// cx16.r4s = llw *90 /5
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val stmts = result.compilerAst.entrypoint.statements
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stmts.size shouldBe 7
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val mulR0Value = (stmts[2] as Assignment).value
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val binexpr0 = mulR0Value as BinaryExpression
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binexpr0.operator shouldBe "*"
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binexpr0.right shouldBe NumericLiteral(BaseDataType.WORD, 180.0, Position.DUMMY)
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val mulR1Value = (stmts[3] as Assignment).value
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val binexpr1 = mulR1Value as BinaryExpression
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binexpr1.operator shouldBe "*"
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binexpr1.right shouldBe NumericLiteral(BaseDataType.WORD, 180.0, Position.DUMMY)
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val divR2Value = (stmts[4] as Assignment).value
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val binexpr2 = divR2Value as BinaryExpression
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binexpr2.operator shouldBe "/"
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binexpr2.right shouldBe NumericLiteral(BaseDataType.WORD, 90.0, Position.DUMMY)
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val mulR3Value = (stmts[5] as Assignment).value
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val binexpr3 = mulR3Value as BinaryExpression
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binexpr3.operator shouldBe "*"
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binexpr3.right shouldBe NumericLiteral(BaseDataType.WORD, 10.0, Position.DUMMY)
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binexpr3.left shouldBe instanceOf<BinaryExpression>()
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val mulR4Value = (stmts[6] as Assignment).value
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val binexpr4 = mulR4Value as BinaryExpression
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binexpr4.operator shouldBe "/"
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binexpr4.right shouldBe NumericLiteral(BaseDataType.WORD, 5.0, Position.DUMMY)
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binexpr4.left shouldBe instanceOf<BinaryExpression>()
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}
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test("const folding and silently typecasted for initializervalues") {
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val sourcecode = """
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main {
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sub start() {
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const ubyte TEST = 10
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byte @shared x1 = TEST as byte + 1
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byte @shared x2 = 1 + TEST as byte
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ubyte @shared y1 = TEST + 1 as byte
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ubyte @shared y2 = 1 as byte + TEST
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}
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}
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"""
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val result = compileText(C64Target(), false, sourcecode)!!
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val mainsub = result.compilerAst.entrypoint
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mainsub.statements.size shouldBe 10
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val declTest = mainsub.statements[0] as VarDecl
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val declX1 = mainsub.statements[1] as VarDecl
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val initX1 = mainsub.statements[2] as Assignment
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val declX2 = mainsub.statements[3] as VarDecl
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val initX2 = mainsub.statements[4] as Assignment
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val declY1 = mainsub.statements[5] as VarDecl
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val initY1 = mainsub.statements[6] as Assignment
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val declY2 = mainsub.statements[7] as VarDecl
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val initY2 = mainsub.statements[8] as Assignment
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mainsub.statements[9] shouldBe instanceOf<Return>()
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(declTest.value as NumericLiteral).number shouldBe 10.0
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declX1.value shouldBe null
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declX2.value shouldBe null
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declY1.value shouldBe null
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declY2.value shouldBe null
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(initX1.value as NumericLiteral).type shouldBe BaseDataType.BYTE
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(initX1.value as NumericLiteral).number shouldBe 11.0
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(initX2.value as NumericLiteral).type shouldBe BaseDataType.BYTE
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(initX2.value as NumericLiteral).number shouldBe 11.0
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(initY1.value as NumericLiteral).type shouldBe BaseDataType.UBYTE
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(initY1.value as NumericLiteral).number shouldBe 11.0
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(initY2.value as NumericLiteral).type shouldBe BaseDataType.UBYTE
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(initY2.value as NumericLiteral).number shouldBe 11.0
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}
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test("const pointer variable indexing works") {
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val src="""
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main {
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sub start() {
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const uword pointer=$1000
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cx16.r0L = pointer[2]
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pointer[2] = cx16.r0L
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}
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}
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"""
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compileText(C64Target(), optimize=false, src, writeAssembly=false) shouldNotBe null
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}
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test("advanced const folding of known library functions") {
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val src="""
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%import floats
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%import math
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%import string
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main {
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sub start() {
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float fl = 1.2 ; no other assignments
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bool @shared result1 = string.isdigit(math.diff(119, floats.floor(floats.deg(fl)) as ubyte))
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bool @shared result2 = string.isletter(math.diff(119, floats.floor(floats.deg(1.2)) as ubyte))
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}
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}"""
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val result = compileText(Cx16Target(), true, src, writeAssembly = false)!!
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val st = result.compilerAst.entrypoint.statements
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st.size shouldBe 5
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(st[0] as VarDecl).type shouldBe VarDeclType.CONST
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val assignv1 = (st[2] as Assignment).value
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val assignv2 = (st[4] as Assignment).value
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(assignv1 as NumericLiteral).number shouldBe 1.0
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(assignv2 as NumericLiteral).number shouldBe 0.0
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}
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test("const address-of memory mapped arrays") {
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val src="""
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main {
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sub start() {
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&uword[30] wb = ${'$'}2000
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&uword[100] array1 = ${'$'}9e00
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&uword[30] array2 = &array1[len(wb)]
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cx16.r0 = &array1 ; ${'$'}9e00
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cx16.r1 = &array1[len(wb)] ; ${'$'}9e3c
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cx16.r2 = &array2 ; ${'$'}9e3c
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}
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}"""
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val result = compileText(Cx16Target(), false, src, writeAssembly = false)!!
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val st = result.compilerAst.entrypoint.statements
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st.size shouldBe 6
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((st[0] as VarDecl).value as NumericLiteral).number shouldBe 0x2000
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((st[1] as VarDecl).value as NumericLiteral).number shouldBe 0x9e00
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((st[2] as VarDecl).value as NumericLiteral).number shouldBe 0x9e00+2*30
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((st[3] as Assignment).value as NumericLiteral).number shouldBe 0x9e00
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((st[4] as Assignment).value as NumericLiteral).number shouldBe 0x9e00+2*30
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((st[5] as Assignment).value as NumericLiteral).number shouldBe 0x9e00+2*30
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}
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test("address of a memory mapped variable") {
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val src = """
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main {
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sub start() {
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&ubyte mappedvar = 1000
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cx16.r0 = &mappedvar
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&ubyte[8] array = &mappedvar
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cx16.r0 = &array
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const uword HIGH_MEMORY_START = 40960
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&uword[20] @shared wa = HIGH_MEMORY_START
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}
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}"""
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val result = compileText(Cx16Target(), optimize=false, src, writeAssembly=true)!!
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val st = result.compilerAst.entrypoint.statements
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st.size shouldBe 7
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val arrayDeclV = (st[2] as VarDecl).value
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(arrayDeclV as NumericLiteral).number shouldBe 1000.0
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val waDeclV = (st[5] as VarDecl).value
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(waDeclV as NumericLiteral).number shouldBe 40960.0
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}
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test("address of a const uword pointer array expression") {
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val src="""
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main {
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sub start() {
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const uword buffer = ${'$'}2000
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uword @shared addr = &buffer[2]
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const ubyte width = 100
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ubyte @shared i
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ubyte @shared j
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uword @shared addr2 = &buffer[i * width + j]
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}
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}"""
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val result = compileText(Cx16Target(), true, src, writeAssembly = true)!!
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val st = result.compilerAst.entrypoint.statements
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st.size shouldBe 11
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val assignAddr = (st[2] as Assignment).value
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(assignAddr as NumericLiteral).number shouldBe 8194.0
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val assignAddr2 = ((st[9] as Assignment).value as AddressOf)
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assignAddr2.identifier.nameInSource shouldBe listOf("buffer")
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assignAddr2.arrayIndex!!.indexExpr shouldBe instanceOf<BinaryExpression>()
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}
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})
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